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 (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 trace_status
*ts
);
204 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
206 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
208 static void remote_query_supported (void);
210 static void remote_check_symbols (void);
212 void _initialize_remote (void);
215 static void stop_reply_xfree (struct stop_reply
*);
216 static void remote_parse_stop_reply (char *, struct stop_reply
*);
217 static void push_stop_reply (struct stop_reply
*);
218 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
219 static int peek_stop_reply (ptid_t ptid
);
221 static void remote_async_inferior_event_handler (gdb_client_data
);
223 static void remote_terminal_ours (void);
225 static int remote_read_description_p (struct target_ops
*target
);
227 static void remote_console_output (char *msg
);
229 static int remote_supports_cond_breakpoints (void);
231 static int remote_can_run_breakpoint_commands (void);
235 static struct cmd_list_element
*remote_cmdlist
;
237 /* For "set remote" and "show remote". */
239 static struct cmd_list_element
*remote_set_cmdlist
;
240 static struct cmd_list_element
*remote_show_cmdlist
;
242 /* Stub vCont actions support.
244 Each field is a boolean flag indicating whether the stub reports
245 support for the corresponding action. */
247 struct vCont_action_support
256 /* Controls whether GDB is willing to use range stepping. */
258 static int use_range_stepping
= 1;
260 #define OPAQUETHREADBYTES 8
262 /* a 64 bit opaque identifier */
263 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
265 /* About this many threadisds fit in a packet. */
267 #define MAXTHREADLISTRESULTS 32
269 /* Description of the remote protocol state for the currently
270 connected target. This is per-target state, and independent of the
271 selected architecture. */
275 /* A buffer to use for incoming packets, and its current size. The
276 buffer is grown dynamically for larger incoming packets.
277 Outgoing packets may also be constructed in this buffer.
278 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
279 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
284 /* True if we're going through initial connection setup (finding out
285 about the remote side's threads, relocating symbols, etc.). */
288 /* If we negotiated packet size explicitly (and thus can bypass
289 heuristics for the largest packet size that will not overflow
290 a buffer in the stub), this will be set to that packet size.
291 Otherwise zero, meaning to use the guessed size. */
292 long explicit_packet_size
;
294 /* remote_wait is normally called when the target is running and
295 waits for a stop reply packet. But sometimes we need to call it
296 when the target is already stopped. We can send a "?" packet
297 and have remote_wait read the response. Or, if we already have
298 the response, we can stash it in BUF and tell remote_wait to
299 skip calling getpkt. This flag is set when BUF contains a
300 stop reply packet and the target is not waiting. */
301 int cached_wait_status
;
303 /* True, if in no ack mode. That is, neither GDB nor the stub will
304 expect acks from each other. The connection is assumed to be
308 /* True if we're connected in extended remote mode. */
311 /* True if the stub reported support for multi-process
313 int multi_process_aware
;
315 /* True if we resumed the target and we're waiting for the target to
316 stop. In the mean time, we can't start another command/query.
317 The remote server wouldn't be ready to process it, so we'd
318 timeout waiting for a reply that would never come and eventually
319 we'd close the connection. This can happen in asynchronous mode
320 because we allow GDB commands while the target is running. */
321 int waiting_for_stop_reply
;
323 /* True if the stub reports support for non-stop mode. */
326 /* The status of the stub support for the various vCont actions. */
327 struct vCont_action_support supports_vCont
;
329 /* True if the stub reports support for conditional tracepoints. */
330 int cond_tracepoints
;
332 /* True if the stub reports support for target-side breakpoint
334 int cond_breakpoints
;
336 /* True if the stub reports support for target-side breakpoint
338 int breakpoint_commands
;
340 /* True if the stub reports support for fast tracepoints. */
341 int fast_tracepoints
;
343 /* True if the stub reports support for static tracepoints. */
344 int static_tracepoints
;
346 /* True if the stub reports support for installing tracepoint while
348 int install_in_trace
;
350 /* True if the stub can continue running a trace while GDB is
352 int disconnected_tracing
;
354 /* True if the stub reports support for enabling and disabling
355 tracepoints while a trace experiment is running. */
356 int enable_disable_tracepoints
;
358 /* True if the stub can collect strings using tracenz bytecode. */
361 /* True if the stub supports qXfer:libraries-svr4:read with a
363 int augmented_libraries_svr4_read
;
365 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
366 responded to that. */
369 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
370 remote_open knows that we don't have a file open when the program
372 struct serial
*remote_desc
;
374 /* These are the threads which we last sent to the remote system. The
375 TID member will be -1 for all or -2 for not sent yet. */
376 ptid_t general_thread
;
377 ptid_t continue_thread
;
379 /* This is the traceframe which we last selected on the remote system.
380 It will be -1 if no traceframe is selected. */
381 int remote_traceframe_number
;
383 char *last_pass_packet
;
385 /* The last QProgramSignals packet sent to the target. We bypass
386 sending a new program signals list down to the target if the new
387 packet is exactly the same as the last we sent. IOW, we only let
388 the target know about program signals list changes. */
389 char *last_program_signals_packet
;
391 enum gdb_signal last_sent_signal
;
395 char *finished_object
;
396 char *finished_annex
;
397 ULONGEST finished_offset
;
399 /* Should we try the 'ThreadInfo' query packet?
401 This variable (NOT available to the user: auto-detect only!)
402 determines whether GDB will use the new, simpler "ThreadInfo"
403 query or the older, more complex syntax for thread queries.
404 This is an auto-detect variable (set to true at each connect,
405 and set to false when the target fails to recognize it). */
406 int use_threadinfo_query
;
407 int use_threadextra_query
;
409 void (*async_client_callback
) (enum inferior_event_type event_type
,
411 void *async_client_context
;
413 /* This is set to the data address of the access causing the target
414 to stop for a watchpoint. */
415 CORE_ADDR remote_watch_data_address
;
417 /* This is non-zero if target stopped for a watchpoint. */
418 int remote_stopped_by_watchpoint_p
;
420 threadref echo_nextthread
;
421 threadref nextthread
;
422 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
424 /* The state of remote notification. */
425 struct remote_notif_state
*notif_state
;
428 /* Private data that we'll store in (struct thread_info)->private. */
429 struct private_thread_info
436 free_private_thread_info (struct private_thread_info
*info
)
442 /* Returns true if the multi-process extensions are in effect. */
444 remote_multi_process_p (struct remote_state
*rs
)
446 return rs
->multi_process_aware
;
449 /* This data could be associated with a target, but we do not always
450 have access to the current target when we need it, so for now it is
451 static. This will be fine for as long as only one target is in use
453 static struct remote_state
*remote_state
;
455 static struct remote_state
*
456 get_remote_state_raw (void)
461 /* Allocate a new struct remote_state with xmalloc, initialize it, and
464 static struct remote_state
*
465 new_remote_state (void)
467 struct remote_state
*result
= XCNEW (struct remote_state
);
469 /* The default buffer size is unimportant; it will be expanded
470 whenever a larger buffer is needed. */
471 result
->buf_size
= 400;
472 result
->buf
= xmalloc (result
->buf_size
);
473 result
->remote_traceframe_number
= -1;
474 result
->last_sent_signal
= GDB_SIGNAL_0
;
479 /* Description of the remote protocol for a given architecture. */
483 long offset
; /* Offset into G packet. */
484 long regnum
; /* GDB's internal register number. */
485 LONGEST pnum
; /* Remote protocol register number. */
486 int in_g_packet
; /* Always part of G packet. */
487 /* long size in bytes; == register_size (target_gdbarch (), regnum);
489 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
493 struct remote_arch_state
495 /* Description of the remote protocol registers. */
496 long sizeof_g_packet
;
498 /* Description of the remote protocol registers indexed by REGNUM
499 (making an array gdbarch_num_regs in size). */
500 struct packet_reg
*regs
;
502 /* This is the size (in chars) of the first response to the ``g''
503 packet. It is used as a heuristic when determining the maximum
504 size of memory-read and memory-write packets. A target will
505 typically only reserve a buffer large enough to hold the ``g''
506 packet. The size does not include packet overhead (headers and
508 long actual_register_packet_size
;
510 /* This is the maximum size (in chars) of a non read/write packet.
511 It is also used as a cap on the size of read/write packets. */
512 long remote_packet_size
;
515 /* Utility: generate error from an incoming stub packet. */
517 trace_error (char *buf
)
520 return; /* not an error msg */
523 case '1': /* malformed packet error */
524 if (*++buf
== '0') /* general case: */
525 error (_("remote.c: error in outgoing packet."));
527 error (_("remote.c: error in outgoing packet at field #%ld."),
528 strtol (buf
, NULL
, 16));
530 error (_("Target returns error code '%s'."), buf
);
534 /* Utility: wait for reply from stub, while accepting "O" packets. */
536 remote_get_noisy_reply (char **buf_p
,
539 do /* Loop on reply from remote stub. */
543 QUIT
; /* Allow user to bail out with ^C. */
544 getpkt (buf_p
, sizeof_buf
, 0);
548 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
551 CORE_ADDR from
, to
, org_to
;
553 int adjusted_size
= 0;
554 volatile struct gdb_exception ex
;
556 p
= buf
+ strlen ("qRelocInsn:");
557 pp
= unpack_varlen_hex (p
, &ul
);
559 error (_("invalid qRelocInsn packet: %s"), buf
);
563 unpack_varlen_hex (p
, &ul
);
568 TRY_CATCH (ex
, RETURN_MASK_ALL
)
570 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
574 adjusted_size
= to
- org_to
;
576 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
579 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
581 /* Propagate memory errors silently back to the target.
582 The stub may have limited the range of addresses we
583 can write to, for example. */
588 /* Something unexpectedly bad happened. Be verbose so
589 we can tell what, and propagate the error back to the
590 stub, so it doesn't get stuck waiting for a
592 exception_fprintf (gdb_stderr
, ex
,
593 _("warning: relocating instruction: "));
597 else if (buf
[0] == 'O' && buf
[1] != 'K')
598 remote_console_output (buf
+ 1); /* 'O' message from stub */
600 return buf
; /* Here's the actual reply. */
605 /* Handle for retreving the remote protocol data from gdbarch. */
606 static struct gdbarch_data
*remote_gdbarch_data_handle
;
608 static struct remote_arch_state
*
609 get_remote_arch_state (void)
611 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
614 /* Fetch the global remote target state. */
616 static struct remote_state
*
617 get_remote_state (void)
619 /* Make sure that the remote architecture state has been
620 initialized, because doing so might reallocate rs->buf. Any
621 function which calls getpkt also needs to be mindful of changes
622 to rs->buf, but this call limits the number of places which run
624 get_remote_arch_state ();
626 return get_remote_state_raw ();
630 compare_pnums (const void *lhs_
, const void *rhs_
)
632 const struct packet_reg
* const *lhs
= lhs_
;
633 const struct packet_reg
* const *rhs
= rhs_
;
635 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
637 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
644 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
646 int regnum
, num_remote_regs
, offset
;
647 struct packet_reg
**remote_regs
;
649 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
651 struct packet_reg
*r
= ®s
[regnum
];
653 if (register_size (gdbarch
, regnum
) == 0)
654 /* Do not try to fetch zero-sized (placeholder) registers. */
657 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
662 /* Define the g/G packet format as the contents of each register
663 with a remote protocol number, in order of ascending protocol
666 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
667 * sizeof (struct packet_reg
*));
668 for (num_remote_regs
= 0, regnum
= 0;
669 regnum
< gdbarch_num_regs (gdbarch
);
671 if (regs
[regnum
].pnum
!= -1)
672 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
674 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
677 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
679 remote_regs
[regnum
]->in_g_packet
= 1;
680 remote_regs
[regnum
]->offset
= offset
;
681 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
687 /* Given the architecture described by GDBARCH, return the remote
688 protocol register's number and the register's offset in the g/G
689 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
690 If the target does not have a mapping for REGNUM, return false,
691 otherwise, return true. */
694 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
695 int *pnum
, int *poffset
)
698 struct packet_reg
*regs
;
699 struct cleanup
*old_chain
;
701 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
703 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
704 old_chain
= make_cleanup (xfree
, regs
);
706 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
708 *pnum
= regs
[regnum
].pnum
;
709 *poffset
= regs
[regnum
].offset
;
711 do_cleanups (old_chain
);
717 init_remote_state (struct gdbarch
*gdbarch
)
719 struct remote_state
*rs
= get_remote_state_raw ();
720 struct remote_arch_state
*rsa
;
722 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
724 /* Use the architecture to build a regnum<->pnum table, which will be
725 1:1 unless a feature set specifies otherwise. */
726 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
727 gdbarch_num_regs (gdbarch
),
730 /* Record the maximum possible size of the g packet - it may turn out
732 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
734 /* Default maximum number of characters in a packet body. Many
735 remote stubs have a hardwired buffer size of 400 bytes
736 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
737 as the maximum packet-size to ensure that the packet and an extra
738 NUL character can always fit in the buffer. This stops GDB
739 trashing stubs that try to squeeze an extra NUL into what is
740 already a full buffer (As of 1999-12-04 that was most stubs). */
741 rsa
->remote_packet_size
= 400 - 1;
743 /* This one is filled in when a ``g'' packet is received. */
744 rsa
->actual_register_packet_size
= 0;
746 /* Should rsa->sizeof_g_packet needs more space than the
747 default, adjust the size accordingly. Remember that each byte is
748 encoded as two characters. 32 is the overhead for the packet
749 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
750 (``$NN:G...#NN'') is a better guess, the below has been padded a
752 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
753 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
755 /* Make sure that the packet buffer is plenty big enough for
756 this architecture. */
757 if (rs
->buf_size
< rsa
->remote_packet_size
)
759 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
760 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
766 /* Return the current allowed size of a remote packet. This is
767 inferred from the current architecture, and should be used to
768 limit the length of outgoing packets. */
770 get_remote_packet_size (void)
772 struct remote_state
*rs
= get_remote_state ();
773 struct remote_arch_state
*rsa
= get_remote_arch_state ();
775 if (rs
->explicit_packet_size
)
776 return rs
->explicit_packet_size
;
778 return rsa
->remote_packet_size
;
781 static struct packet_reg
*
782 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
784 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
788 struct packet_reg
*r
= &rsa
->regs
[regnum
];
790 gdb_assert (r
->regnum
== regnum
);
795 static struct packet_reg
*
796 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
800 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
802 struct packet_reg
*r
= &rsa
->regs
[i
];
810 static struct target_ops remote_ops
;
812 static struct target_ops extended_remote_ops
;
814 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
815 ``forever'' still use the normal timeout mechanism. This is
816 currently used by the ASYNC code to guarentee that target reads
817 during the initial connect always time-out. Once getpkt has been
818 modified to return a timeout indication and, in turn
819 remote_wait()/wait_for_inferior() have gained a timeout parameter
821 static int wait_forever_enabled_p
= 1;
823 /* Allow the user to specify what sequence to send to the remote
824 when he requests a program interruption: Although ^C is usually
825 what remote systems expect (this is the default, here), it is
826 sometimes preferable to send a break. On other systems such
827 as the Linux kernel, a break followed by g, which is Magic SysRq g
828 is required in order to interrupt the execution. */
829 const char interrupt_sequence_control_c
[] = "Ctrl-C";
830 const char interrupt_sequence_break
[] = "BREAK";
831 const char interrupt_sequence_break_g
[] = "BREAK-g";
832 static const char *const interrupt_sequence_modes
[] =
834 interrupt_sequence_control_c
,
835 interrupt_sequence_break
,
836 interrupt_sequence_break_g
,
839 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
842 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
843 struct cmd_list_element
*c
,
846 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
847 fprintf_filtered (file
,
848 _("Send the ASCII ETX character (Ctrl-c) "
849 "to the remote target to interrupt the "
850 "execution of the program.\n"));
851 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
852 fprintf_filtered (file
,
853 _("send a break signal to the remote target "
854 "to interrupt the execution of the program.\n"));
855 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
856 fprintf_filtered (file
,
857 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
858 "the remote target to interrupt the execution "
859 "of Linux kernel.\n"));
861 internal_error (__FILE__
, __LINE__
,
862 _("Invalid value for interrupt_sequence_mode: %s."),
863 interrupt_sequence_mode
);
866 /* This boolean variable specifies whether interrupt_sequence is sent
867 to the remote target when gdb connects to it.
868 This is mostly needed when you debug the Linux kernel: The Linux kernel
869 expects BREAK g which is Magic SysRq g for connecting gdb. */
870 static int interrupt_on_connect
= 0;
872 /* This variable is used to implement the "set/show remotebreak" commands.
873 Since these commands are now deprecated in favor of "set/show remote
874 interrupt-sequence", it no longer has any effect on the code. */
875 static int remote_break
;
878 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
881 interrupt_sequence_mode
= interrupt_sequence_break
;
883 interrupt_sequence_mode
= interrupt_sequence_control_c
;
887 show_remotebreak (struct ui_file
*file
, int from_tty
,
888 struct cmd_list_element
*c
,
893 /* This variable sets the number of bits in an address that are to be
894 sent in a memory ("M" or "m") packet. Normally, after stripping
895 leading zeros, the entire address would be sent. This variable
896 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
897 initial implementation of remote.c restricted the address sent in
898 memory packets to ``host::sizeof long'' bytes - (typically 32
899 bits). Consequently, for 64 bit targets, the upper 32 bits of an
900 address was never sent. Since fixing this bug may cause a break in
901 some remote targets this variable is principly provided to
902 facilitate backward compatibility. */
904 static unsigned int remote_address_size
;
906 /* Temporary to track who currently owns the terminal. See
907 remote_terminal_* for more details. */
909 static int remote_async_terminal_ours_p
;
911 /* The executable file to use for "run" on the remote side. */
913 static char *remote_exec_file
= "";
916 /* User configurable variables for the number of characters in a
917 memory read/write packet. MIN (rsa->remote_packet_size,
918 rsa->sizeof_g_packet) is the default. Some targets need smaller
919 values (fifo overruns, et.al.) and some users need larger values
920 (speed up transfers). The variables ``preferred_*'' (the user
921 request), ``current_*'' (what was actually set) and ``forced_*''
922 (Positive - a soft limit, negative - a hard limit). */
924 struct memory_packet_config
931 /* Compute the current size of a read/write packet. Since this makes
932 use of ``actual_register_packet_size'' the computation is dynamic. */
935 get_memory_packet_size (struct memory_packet_config
*config
)
937 struct remote_state
*rs
= get_remote_state ();
938 struct remote_arch_state
*rsa
= get_remote_arch_state ();
940 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
941 law?) that some hosts don't cope very well with large alloca()
942 calls. Eventually the alloca() code will be replaced by calls to
943 xmalloc() and make_cleanups() allowing this restriction to either
944 be lifted or removed. */
945 #ifndef MAX_REMOTE_PACKET_SIZE
946 #define MAX_REMOTE_PACKET_SIZE 16384
948 /* NOTE: 20 ensures we can write at least one byte. */
949 #ifndef MIN_REMOTE_PACKET_SIZE
950 #define MIN_REMOTE_PACKET_SIZE 20
955 if (config
->size
<= 0)
956 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
958 what_they_get
= config
->size
;
962 what_they_get
= get_remote_packet_size ();
963 /* Limit the packet to the size specified by the user. */
965 && what_they_get
> config
->size
)
966 what_they_get
= config
->size
;
968 /* Limit it to the size of the targets ``g'' response unless we have
969 permission from the stub to use a larger packet size. */
970 if (rs
->explicit_packet_size
== 0
971 && rsa
->actual_register_packet_size
> 0
972 && what_they_get
> rsa
->actual_register_packet_size
)
973 what_they_get
= rsa
->actual_register_packet_size
;
975 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
976 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
977 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
978 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
980 /* Make sure there is room in the global buffer for this packet
981 (including its trailing NUL byte). */
982 if (rs
->buf_size
< what_they_get
+ 1)
984 rs
->buf_size
= 2 * what_they_get
;
985 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
988 return what_they_get
;
991 /* Update the size of a read/write packet. If they user wants
992 something really big then do a sanity check. */
995 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
997 int fixed_p
= config
->fixed_p
;
998 long size
= config
->size
;
1001 error (_("Argument required (integer, `fixed' or `limited')."));
1002 else if (strcmp (args
, "hard") == 0
1003 || strcmp (args
, "fixed") == 0)
1005 else if (strcmp (args
, "soft") == 0
1006 || strcmp (args
, "limit") == 0)
1012 size
= strtoul (args
, &end
, 0);
1014 error (_("Invalid %s (bad syntax)."), config
->name
);
1016 /* Instead of explicitly capping the size of a packet to
1017 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
1018 instead allowed to set the size to something arbitrarily
1020 if (size
> MAX_REMOTE_PACKET_SIZE
)
1021 error (_("Invalid %s (too large)."), config
->name
);
1025 if (fixed_p
&& !config
->fixed_p
)
1027 if (! query (_("The target may not be able to correctly handle a %s\n"
1028 "of %ld bytes. Change the packet size? "),
1029 config
->name
, size
))
1030 error (_("Packet size not changed."));
1032 /* Update the config. */
1033 config
->fixed_p
= fixed_p
;
1034 config
->size
= size
;
1038 show_memory_packet_size (struct memory_packet_config
*config
)
1040 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1041 if (config
->fixed_p
)
1042 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1043 get_memory_packet_size (config
));
1045 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1046 get_memory_packet_size (config
));
1049 static struct memory_packet_config memory_write_packet_config
=
1051 "memory-write-packet-size",
1055 set_memory_write_packet_size (char *args
, int from_tty
)
1057 set_memory_packet_size (args
, &memory_write_packet_config
);
1061 show_memory_write_packet_size (char *args
, int from_tty
)
1063 show_memory_packet_size (&memory_write_packet_config
);
1067 get_memory_write_packet_size (void)
1069 return get_memory_packet_size (&memory_write_packet_config
);
1072 static struct memory_packet_config memory_read_packet_config
=
1074 "memory-read-packet-size",
1078 set_memory_read_packet_size (char *args
, int from_tty
)
1080 set_memory_packet_size (args
, &memory_read_packet_config
);
1084 show_memory_read_packet_size (char *args
, int from_tty
)
1086 show_memory_packet_size (&memory_read_packet_config
);
1090 get_memory_read_packet_size (void)
1092 long size
= get_memory_packet_size (&memory_read_packet_config
);
1094 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1095 extra buffer size argument before the memory read size can be
1096 increased beyond this. */
1097 if (size
> get_remote_packet_size ())
1098 size
= get_remote_packet_size ();
1103 /* Generic configuration support for packets the stub optionally
1104 supports. Allows the user to specify the use of the packet as well
1105 as allowing GDB to auto-detect support in the remote stub. */
1109 PACKET_SUPPORT_UNKNOWN
= 0,
1114 struct packet_config
1118 enum auto_boolean detect
;
1119 enum packet_support support
;
1122 /* Analyze a packet's return value and update the packet config
1133 update_packet_config (struct packet_config
*config
)
1135 switch (config
->detect
)
1137 case AUTO_BOOLEAN_TRUE
:
1138 config
->support
= PACKET_ENABLE
;
1140 case AUTO_BOOLEAN_FALSE
:
1141 config
->support
= PACKET_DISABLE
;
1143 case AUTO_BOOLEAN_AUTO
:
1144 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1150 show_packet_config_cmd (struct packet_config
*config
)
1152 char *support
= "internal-error";
1154 switch (config
->support
)
1157 support
= "enabled";
1159 case PACKET_DISABLE
:
1160 support
= "disabled";
1162 case PACKET_SUPPORT_UNKNOWN
:
1163 support
= "unknown";
1166 switch (config
->detect
)
1168 case AUTO_BOOLEAN_AUTO
:
1169 printf_filtered (_("Support for the `%s' packet "
1170 "is auto-detected, currently %s.\n"),
1171 config
->name
, support
);
1173 case AUTO_BOOLEAN_TRUE
:
1174 case AUTO_BOOLEAN_FALSE
:
1175 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1176 config
->name
, support
);
1182 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1183 const char *title
, int legacy
)
1189 config
->name
= name
;
1190 config
->title
= title
;
1191 config
->detect
= AUTO_BOOLEAN_AUTO
;
1192 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1193 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1195 show_doc
= xstrprintf ("Show current use of remote "
1196 "protocol `%s' (%s) packet",
1198 /* set/show TITLE-packet {auto,on,off} */
1199 cmd_name
= xstrprintf ("%s-packet", title
);
1200 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1201 &config
->detect
, set_doc
,
1202 show_doc
, NULL
, /* help_doc */
1203 set_remote_protocol_packet_cmd
,
1204 show_remote_protocol_packet_cmd
,
1205 &remote_set_cmdlist
, &remote_show_cmdlist
);
1206 /* The command code copies the documentation strings. */
1209 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1214 legacy_name
= xstrprintf ("%s-packet", name
);
1215 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1216 &remote_set_cmdlist
);
1217 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1218 &remote_show_cmdlist
);
1222 static enum packet_result
1223 packet_check_result (const char *buf
)
1227 /* The stub recognized the packet request. Check that the
1228 operation succeeded. */
1230 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1232 /* "Enn" - definitly an error. */
1233 return PACKET_ERROR
;
1235 /* Always treat "E." as an error. This will be used for
1236 more verbose error messages, such as E.memtypes. */
1237 if (buf
[0] == 'E' && buf
[1] == '.')
1238 return PACKET_ERROR
;
1240 /* The packet may or may not be OK. Just assume it is. */
1244 /* The stub does not support the packet. */
1245 return PACKET_UNKNOWN
;
1248 static enum packet_result
1249 packet_ok (const char *buf
, struct packet_config
*config
)
1251 enum packet_result result
;
1253 result
= packet_check_result (buf
);
1258 /* The stub recognized the packet request. */
1259 switch (config
->support
)
1261 case PACKET_SUPPORT_UNKNOWN
:
1263 fprintf_unfiltered (gdb_stdlog
,
1264 "Packet %s (%s) is supported\n",
1265 config
->name
, config
->title
);
1266 config
->support
= PACKET_ENABLE
;
1268 case PACKET_DISABLE
:
1269 internal_error (__FILE__
, __LINE__
,
1270 _("packet_ok: attempt to use a disabled packet"));
1276 case PACKET_UNKNOWN
:
1277 /* The stub does not support the packet. */
1278 switch (config
->support
)
1281 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1282 /* If the stub previously indicated that the packet was
1283 supported then there is a protocol error.. */
1284 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1285 config
->name
, config
->title
);
1287 /* The user set it wrong. */
1288 error (_("Enabled packet %s (%s) not recognized by stub"),
1289 config
->name
, config
->title
);
1291 case PACKET_SUPPORT_UNKNOWN
:
1293 fprintf_unfiltered (gdb_stdlog
,
1294 "Packet %s (%s) is NOT supported\n",
1295 config
->name
, config
->title
);
1296 config
->support
= PACKET_DISABLE
;
1298 case PACKET_DISABLE
:
1320 PACKET_vFile_pwrite
,
1322 PACKET_vFile_unlink
,
1323 PACKET_vFile_readlink
,
1325 PACKET_qXfer_features
,
1326 PACKET_qXfer_libraries
,
1327 PACKET_qXfer_libraries_svr4
,
1328 PACKET_qXfer_memory_map
,
1329 PACKET_qXfer_spu_read
,
1330 PACKET_qXfer_spu_write
,
1331 PACKET_qXfer_osdata
,
1332 PACKET_qXfer_threads
,
1333 PACKET_qXfer_statictrace_read
,
1334 PACKET_qXfer_traceframe_info
,
1340 PACKET_QPassSignals
,
1341 PACKET_QProgramSignals
,
1342 PACKET_qSearch_memory
,
1345 PACKET_QStartNoAckMode
,
1347 PACKET_qXfer_siginfo_read
,
1348 PACKET_qXfer_siginfo_write
,
1350 PACKET_ConditionalTracepoints
,
1351 PACKET_ConditionalBreakpoints
,
1352 PACKET_BreakpointCommands
,
1353 PACKET_FastTracepoints
,
1354 PACKET_StaticTracepoints
,
1355 PACKET_InstallInTrace
,
1358 PACKET_TracepointSource
,
1361 PACKET_QDisableRandomization
,
1363 PACKET_QTBuffer_size
,
1366 PACKET_qXfer_btrace
,
1370 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1373 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1374 struct cmd_list_element
*c
)
1376 struct packet_config
*packet
;
1378 for (packet
= remote_protocol_packets
;
1379 packet
< &remote_protocol_packets
[PACKET_MAX
];
1382 if (&packet
->detect
== c
->var
)
1384 update_packet_config (packet
);
1388 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1393 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1394 struct cmd_list_element
*c
,
1397 struct packet_config
*packet
;
1399 for (packet
= remote_protocol_packets
;
1400 packet
< &remote_protocol_packets
[PACKET_MAX
];
1403 if (&packet
->detect
== c
->var
)
1405 show_packet_config_cmd (packet
);
1409 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1413 /* Should we try one of the 'Z' requests? */
1417 Z_PACKET_SOFTWARE_BP
,
1418 Z_PACKET_HARDWARE_BP
,
1425 /* For compatibility with older distributions. Provide a ``set remote
1426 Z-packet ...'' command that updates all the Z packet types. */
1428 static enum auto_boolean remote_Z_packet_detect
;
1431 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1432 struct cmd_list_element
*c
)
1436 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1438 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1439 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1444 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1445 struct cmd_list_element
*c
,
1450 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1452 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1456 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1457 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1458 static struct async_signal_handler
*async_sigint_remote_token
;
1461 /* Asynchronous signal handle registered as event loop source for
1462 when we have pending events ready to be passed to the core. */
1464 static struct async_event_handler
*remote_async_inferior_event_token
;
1468 static ptid_t magic_null_ptid
;
1469 static ptid_t not_sent_ptid
;
1470 static ptid_t any_thread_ptid
;
1472 /* Find out if the stub attached to PID (and hence GDB should offer to
1473 detach instead of killing it when bailing out). */
1476 remote_query_attached (int pid
)
1478 struct remote_state
*rs
= get_remote_state ();
1479 size_t size
= get_remote_packet_size ();
1481 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1484 if (remote_multi_process_p (rs
))
1485 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1487 xsnprintf (rs
->buf
, size
, "qAttached");
1490 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1492 switch (packet_ok (rs
->buf
,
1493 &remote_protocol_packets
[PACKET_qAttached
]))
1496 if (strcmp (rs
->buf
, "1") == 0)
1500 warning (_("Remote failure reply: %s"), rs
->buf
);
1502 case PACKET_UNKNOWN
:
1509 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1510 has been invented by GDB, instead of reported by the target. Since
1511 we can be connected to a remote system before before knowing about
1512 any inferior, mark the target with execution when we find the first
1513 inferior. If ATTACHED is 1, then we had just attached to this
1514 inferior. If it is 0, then we just created this inferior. If it
1515 is -1, then try querying the remote stub to find out if it had
1516 attached to the inferior or not. */
1518 static struct inferior
*
1519 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1521 struct inferior
*inf
;
1523 /* Check whether this process we're learning about is to be
1524 considered attached, or if is to be considered to have been
1525 spawned by the stub. */
1527 attached
= remote_query_attached (pid
);
1529 if (gdbarch_has_global_solist (target_gdbarch ()))
1531 /* If the target shares code across all inferiors, then every
1532 attach adds a new inferior. */
1533 inf
= add_inferior (pid
);
1535 /* ... and every inferior is bound to the same program space.
1536 However, each inferior may still have its own address
1538 inf
->aspace
= maybe_new_address_space ();
1539 inf
->pspace
= current_program_space
;
1543 /* In the traditional debugging scenario, there's a 1-1 match
1544 between program/address spaces. We simply bind the inferior
1545 to the program space's address space. */
1546 inf
= current_inferior ();
1547 inferior_appeared (inf
, pid
);
1550 inf
->attach_flag
= attached
;
1551 inf
->fake_pid_p
= fake_pid_p
;
1556 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1557 according to RUNNING. */
1560 remote_add_thread (ptid_t ptid
, int running
)
1562 struct remote_state
*rs
= get_remote_state ();
1564 /* GDB historically didn't pull threads in the initial connection
1565 setup. If the remote target doesn't even have a concept of
1566 threads (e.g., a bare-metal target), even if internally we
1567 consider that a single-threaded target, mentioning a new thread
1568 might be confusing to the user. Be silent then, preserving the
1569 age old behavior. */
1570 if (rs
->starting_up
)
1571 add_thread_silent (ptid
);
1575 set_executing (ptid
, running
);
1576 set_running (ptid
, running
);
1579 /* Come here when we learn about a thread id from the remote target.
1580 It may be the first time we hear about such thread, so take the
1581 opportunity to add it to GDB's thread list. In case this is the
1582 first time we're noticing its corresponding inferior, add it to
1583 GDB's inferior list as well. */
1586 remote_notice_new_inferior (ptid_t currthread
, int running
)
1588 /* If this is a new thread, add it to GDB's thread list.
1589 If we leave it up to WFI to do this, bad things will happen. */
1591 if (in_thread_list (currthread
) && is_exited (currthread
))
1593 /* We're seeing an event on a thread id we knew had exited.
1594 This has to be a new thread reusing the old id. Add it. */
1595 remote_add_thread (currthread
, running
);
1599 if (!in_thread_list (currthread
))
1601 struct inferior
*inf
= NULL
;
1602 int pid
= ptid_get_pid (currthread
);
1604 if (ptid_is_pid (inferior_ptid
)
1605 && pid
== ptid_get_pid (inferior_ptid
))
1607 /* inferior_ptid has no thread member yet. This can happen
1608 with the vAttach -> remote_wait,"TAAthread:" path if the
1609 stub doesn't support qC. This is the first stop reported
1610 after an attach, so this is the main thread. Update the
1611 ptid in the thread list. */
1612 if (in_thread_list (pid_to_ptid (pid
)))
1613 thread_change_ptid (inferior_ptid
, currthread
);
1616 remote_add_thread (currthread
, running
);
1617 inferior_ptid
= currthread
;
1622 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1624 /* inferior_ptid is not set yet. This can happen with the
1625 vRun -> remote_wait,"TAAthread:" path if the stub
1626 doesn't support qC. This is the first stop reported
1627 after an attach, so this is the main thread. Update the
1628 ptid in the thread list. */
1629 thread_change_ptid (inferior_ptid
, currthread
);
1633 /* When connecting to a target remote, or to a target
1634 extended-remote which already was debugging an inferior, we
1635 may not know about it yet. Add it before adding its child
1636 thread, so notifications are emitted in a sensible order. */
1637 if (!in_inferior_list (ptid_get_pid (currthread
)))
1639 struct remote_state
*rs
= get_remote_state ();
1640 int fake_pid_p
= !remote_multi_process_p (rs
);
1642 inf
= remote_add_inferior (fake_pid_p
,
1643 ptid_get_pid (currthread
), -1);
1646 /* This is really a new thread. Add it. */
1647 remote_add_thread (currthread
, running
);
1649 /* If we found a new inferior, let the common code do whatever
1650 it needs to with it (e.g., read shared libraries, insert
1651 breakpoints), unless we're just setting up an all-stop
1655 struct remote_state
*rs
= get_remote_state ();
1657 if (non_stop
|| !rs
->starting_up
)
1658 notice_new_inferior (currthread
, running
, 0);
1663 /* Return the private thread data, creating it if necessary. */
1665 static struct private_thread_info
*
1666 demand_private_info (ptid_t ptid
)
1668 struct thread_info
*info
= find_thread_ptid (ptid
);
1674 info
->private = xmalloc (sizeof (*(info
->private)));
1675 info
->private_dtor
= free_private_thread_info
;
1676 info
->private->core
= -1;
1677 info
->private->extra
= 0;
1680 return info
->private;
1683 /* Call this function as a result of
1684 1) A halt indication (T packet) containing a thread id
1685 2) A direct query of currthread
1686 3) Successful execution of set thread */
1689 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1691 rs
->general_thread
= currthread
;
1694 /* If 'QPassSignals' is supported, tell the remote stub what signals
1695 it can simply pass through to the inferior without reporting. */
1698 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1700 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1702 char *pass_packet
, *p
;
1704 struct remote_state
*rs
= get_remote_state ();
1706 gdb_assert (numsigs
< 256);
1707 for (i
= 0; i
< numsigs
; i
++)
1709 if (pass_signals
[i
])
1712 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1713 strcpy (pass_packet
, "QPassSignals:");
1714 p
= pass_packet
+ strlen (pass_packet
);
1715 for (i
= 0; i
< numsigs
; i
++)
1717 if (pass_signals
[i
])
1720 *p
++ = tohex (i
>> 4);
1721 *p
++ = tohex (i
& 15);
1730 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1732 putpkt (pass_packet
);
1733 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1734 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1735 if (rs
->last_pass_packet
)
1736 xfree (rs
->last_pass_packet
);
1737 rs
->last_pass_packet
= pass_packet
;
1740 xfree (pass_packet
);
1744 /* If 'QProgramSignals' is supported, tell the remote stub what
1745 signals it should pass through to the inferior when detaching. */
1748 remote_program_signals (int numsigs
, unsigned char *signals
)
1750 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1754 struct remote_state
*rs
= get_remote_state ();
1756 gdb_assert (numsigs
< 256);
1757 for (i
= 0; i
< numsigs
; i
++)
1762 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1763 strcpy (packet
, "QProgramSignals:");
1764 p
= packet
+ strlen (packet
);
1765 for (i
= 0; i
< numsigs
; i
++)
1767 if (signal_pass_state (i
))
1770 *p
++ = tohex (i
>> 4);
1771 *p
++ = tohex (i
& 15);
1780 if (!rs
->last_program_signals_packet
1781 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1784 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1785 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1786 xfree (rs
->last_program_signals_packet
);
1787 rs
->last_program_signals_packet
= packet
;
1794 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1795 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1796 thread. If GEN is set, set the general thread, if not, then set
1797 the step/continue thread. */
1799 set_thread (struct ptid ptid
, int gen
)
1801 struct remote_state
*rs
= get_remote_state ();
1802 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1803 char *buf
= rs
->buf
;
1804 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1806 if (ptid_equal (state
, ptid
))
1810 *buf
++ = gen
? 'g' : 'c';
1811 if (ptid_equal (ptid
, magic_null_ptid
))
1812 xsnprintf (buf
, endbuf
- buf
, "0");
1813 else if (ptid_equal (ptid
, any_thread_ptid
))
1814 xsnprintf (buf
, endbuf
- buf
, "0");
1815 else if (ptid_equal (ptid
, minus_one_ptid
))
1816 xsnprintf (buf
, endbuf
- buf
, "-1");
1818 write_ptid (buf
, endbuf
, ptid
);
1820 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1822 rs
->general_thread
= ptid
;
1824 rs
->continue_thread
= ptid
;
1828 set_general_thread (struct ptid ptid
)
1830 set_thread (ptid
, 1);
1834 set_continue_thread (struct ptid ptid
)
1836 set_thread (ptid
, 0);
1839 /* Change the remote current process. Which thread within the process
1840 ends up selected isn't important, as long as it is the same process
1841 as what INFERIOR_PTID points to.
1843 This comes from that fact that there is no explicit notion of
1844 "selected process" in the protocol. The selected process for
1845 general operations is the process the selected general thread
1849 set_general_process (void)
1851 struct remote_state
*rs
= get_remote_state ();
1853 /* If the remote can't handle multiple processes, don't bother. */
1854 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1857 /* We only need to change the remote current thread if it's pointing
1858 at some other process. */
1859 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1860 set_general_thread (inferior_ptid
);
1864 /* Return nonzero if the thread PTID is still alive on the remote
1868 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1870 struct remote_state
*rs
= get_remote_state ();
1873 if (ptid_equal (ptid
, magic_null_ptid
))
1874 /* The main thread is always alive. */
1877 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1878 /* The main thread is always alive. This can happen after a
1879 vAttach, if the remote side doesn't support
1884 endp
= rs
->buf
+ get_remote_packet_size ();
1887 write_ptid (p
, endp
, ptid
);
1890 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1891 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1894 /* About these extended threadlist and threadinfo packets. They are
1895 variable length packets but, the fields within them are often fixed
1896 length. They are redundent enough to send over UDP as is the
1897 remote protocol in general. There is a matching unit test module
1900 /* WARNING: This threadref data structure comes from the remote O.S.,
1901 libstub protocol encoding, and remote.c. It is not particularly
1904 /* Right now, the internal structure is int. We want it to be bigger.
1905 Plan to fix this. */
1907 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1909 /* gdb_ext_thread_info is an internal GDB data structure which is
1910 equivalent to the reply of the remote threadinfo packet. */
1912 struct gdb_ext_thread_info
1914 threadref threadid
; /* External form of thread reference. */
1915 int active
; /* Has state interesting to GDB?
1917 char display
[256]; /* Brief state display, name,
1918 blocked/suspended. */
1919 char shortname
[32]; /* To be used to name threads. */
1920 char more_display
[256]; /* Long info, statistics, queue depth,
1924 /* The volume of remote transfers can be limited by submitting
1925 a mask containing bits specifying the desired information.
1926 Use a union of these values as the 'selection' parameter to
1927 get_thread_info. FIXME: Make these TAG names more thread specific. */
1929 #define TAG_THREADID 1
1930 #define TAG_EXISTS 2
1931 #define TAG_DISPLAY 4
1932 #define TAG_THREADNAME 8
1933 #define TAG_MOREDISPLAY 16
1935 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1937 static char *unpack_nibble (char *buf
, int *val
);
1939 static char *unpack_byte (char *buf
, int *value
);
1941 static char *pack_int (char *buf
, int value
);
1943 static char *unpack_int (char *buf
, int *value
);
1945 static char *unpack_string (char *src
, char *dest
, int length
);
1947 static char *pack_threadid (char *pkt
, threadref
*id
);
1949 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1951 void int_to_threadref (threadref
*id
, int value
);
1953 static int threadref_to_int (threadref
*ref
);
1955 static void copy_threadref (threadref
*dest
, threadref
*src
);
1957 static int threadmatch (threadref
*dest
, threadref
*src
);
1959 static char *pack_threadinfo_request (char *pkt
, int mode
,
1962 static int remote_unpack_thread_info_response (char *pkt
,
1963 threadref
*expectedref
,
1964 struct gdb_ext_thread_info
1968 static int remote_get_threadinfo (threadref
*threadid
,
1969 int fieldset
, /*TAG mask */
1970 struct gdb_ext_thread_info
*info
);
1972 static char *pack_threadlist_request (char *pkt
, int startflag
,
1974 threadref
*nextthread
);
1976 static int parse_threadlist_response (char *pkt
,
1978 threadref
*original_echo
,
1979 threadref
*resultlist
,
1982 static int remote_get_threadlist (int startflag
,
1983 threadref
*nextthread
,
1987 threadref
*threadlist
);
1989 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1991 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1992 void *context
, int looplimit
);
1994 static int remote_newthread_step (threadref
*ref
, void *context
);
1997 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1998 buffer we're allowed to write to. Returns
1999 BUF+CHARACTERS_WRITTEN. */
2002 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2005 struct remote_state
*rs
= get_remote_state ();
2007 if (remote_multi_process_p (rs
))
2009 pid
= ptid_get_pid (ptid
);
2011 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2013 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2015 tid
= ptid_get_tid (ptid
);
2017 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2019 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2024 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2025 passed the last parsed char. Returns null_ptid on error. */
2028 read_ptid (char *buf
, char **obuf
)
2032 ULONGEST pid
= 0, tid
= 0;
2036 /* Multi-process ptid. */
2037 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2039 error (_("invalid remote ptid: %s"), p
);
2042 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2045 return ptid_build (pid
, 0, tid
);
2048 /* No multi-process. Just a tid. */
2049 pp
= unpack_varlen_hex (p
, &tid
);
2051 /* Since the stub is not sending a process id, then default to
2052 what's in inferior_ptid, unless it's null at this point. If so,
2053 then since there's no way to know the pid of the reported
2054 threads, use the magic number. */
2055 if (ptid_equal (inferior_ptid
, null_ptid
))
2056 pid
= ptid_get_pid (magic_null_ptid
);
2058 pid
= ptid_get_pid (inferior_ptid
);
2062 return ptid_build (pid
, 0, tid
);
2068 if (ch
>= 'a' && ch
<= 'f')
2069 return ch
- 'a' + 10;
2070 if (ch
>= '0' && ch
<= '9')
2072 if (ch
>= 'A' && ch
<= 'F')
2073 return ch
- 'A' + 10;
2078 stub_unpack_int (char *buff
, int fieldlength
)
2085 nibble
= stubhex (*buff
++);
2089 retval
= retval
<< 4;
2095 unpack_nibble (char *buf
, int *val
)
2097 *val
= fromhex (*buf
++);
2102 unpack_byte (char *buf
, int *value
)
2104 *value
= stub_unpack_int (buf
, 2);
2109 pack_int (char *buf
, int value
)
2111 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2112 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2113 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2114 buf
= pack_hex_byte (buf
, (value
& 0xff));
2119 unpack_int (char *buf
, int *value
)
2121 *value
= stub_unpack_int (buf
, 8);
2125 #if 0 /* Currently unused, uncomment when needed. */
2126 static char *pack_string (char *pkt
, char *string
);
2129 pack_string (char *pkt
, char *string
)
2134 len
= strlen (string
);
2136 len
= 200; /* Bigger than most GDB packets, junk??? */
2137 pkt
= pack_hex_byte (pkt
, len
);
2141 if ((ch
== '\0') || (ch
== '#'))
2142 ch
= '*'; /* Protect encapsulation. */
2147 #endif /* 0 (unused) */
2150 unpack_string (char *src
, char *dest
, int length
)
2159 pack_threadid (char *pkt
, threadref
*id
)
2162 unsigned char *altid
;
2164 altid
= (unsigned char *) id
;
2165 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2167 pkt
= pack_hex_byte (pkt
, *altid
++);
2173 unpack_threadid (char *inbuf
, threadref
*id
)
2176 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2179 altref
= (char *) id
;
2181 while (inbuf
< limit
)
2183 x
= stubhex (*inbuf
++);
2184 y
= stubhex (*inbuf
++);
2185 *altref
++ = (x
<< 4) | y
;
2190 /* Externally, threadrefs are 64 bits but internally, they are still
2191 ints. This is due to a mismatch of specifications. We would like
2192 to use 64bit thread references internally. This is an adapter
2196 int_to_threadref (threadref
*id
, int value
)
2198 unsigned char *scan
;
2200 scan
= (unsigned char *) id
;
2206 *scan
++ = (value
>> 24) & 0xff;
2207 *scan
++ = (value
>> 16) & 0xff;
2208 *scan
++ = (value
>> 8) & 0xff;
2209 *scan
++ = (value
& 0xff);
2213 threadref_to_int (threadref
*ref
)
2216 unsigned char *scan
;
2222 value
= (value
<< 8) | ((*scan
++) & 0xff);
2227 copy_threadref (threadref
*dest
, threadref
*src
)
2230 unsigned char *csrc
, *cdest
;
2232 csrc
= (unsigned char *) src
;
2233 cdest
= (unsigned char *) dest
;
2240 threadmatch (threadref
*dest
, threadref
*src
)
2242 /* Things are broken right now, so just assume we got a match. */
2244 unsigned char *srcp
, *destp
;
2246 srcp
= (char *) src
;
2247 destp
= (char *) dest
;
2251 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2258 threadid:1, # always request threadid
2265 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2268 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2270 *pkt
++ = 'q'; /* Info Query */
2271 *pkt
++ = 'P'; /* process or thread info */
2272 pkt
= pack_int (pkt
, mode
); /* mode */
2273 pkt
= pack_threadid (pkt
, id
); /* threadid */
2274 *pkt
= '\0'; /* terminate */
2278 /* These values tag the fields in a thread info response packet. */
2279 /* Tagging the fields allows us to request specific fields and to
2280 add more fields as time goes by. */
2282 #define TAG_THREADID 1 /* Echo the thread identifier. */
2283 #define TAG_EXISTS 2 /* Is this process defined enough to
2284 fetch registers and its stack? */
2285 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2286 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2287 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2291 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2292 struct gdb_ext_thread_info
*info
)
2294 struct remote_state
*rs
= get_remote_state ();
2298 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2301 /* info->threadid = 0; FIXME: implement zero_threadref. */
2303 info
->display
[0] = '\0';
2304 info
->shortname
[0] = '\0';
2305 info
->more_display
[0] = '\0';
2307 /* Assume the characters indicating the packet type have been
2309 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2310 pkt
= unpack_threadid (pkt
, &ref
);
2313 warning (_("Incomplete response to threadinfo request."));
2314 if (!threadmatch (&ref
, expectedref
))
2315 { /* This is an answer to a different request. */
2316 warning (_("ERROR RMT Thread info mismatch."));
2319 copy_threadref (&info
->threadid
, &ref
);
2321 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2323 /* Packets are terminated with nulls. */
2324 while ((pkt
< limit
) && mask
&& *pkt
)
2326 pkt
= unpack_int (pkt
, &tag
); /* tag */
2327 pkt
= unpack_byte (pkt
, &length
); /* length */
2328 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2330 warning (_("ERROR RMT: threadinfo tag mismatch."));
2334 if (tag
== TAG_THREADID
)
2338 warning (_("ERROR RMT: length of threadid is not 16."));
2342 pkt
= unpack_threadid (pkt
, &ref
);
2343 mask
= mask
& ~TAG_THREADID
;
2346 if (tag
== TAG_EXISTS
)
2348 info
->active
= stub_unpack_int (pkt
, length
);
2350 mask
= mask
& ~(TAG_EXISTS
);
2353 warning (_("ERROR RMT: 'exists' length too long."));
2359 if (tag
== TAG_THREADNAME
)
2361 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2362 mask
= mask
& ~TAG_THREADNAME
;
2365 if (tag
== TAG_DISPLAY
)
2367 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2368 mask
= mask
& ~TAG_DISPLAY
;
2371 if (tag
== TAG_MOREDISPLAY
)
2373 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2374 mask
= mask
& ~TAG_MOREDISPLAY
;
2377 warning (_("ERROR RMT: unknown thread info tag."));
2378 break; /* Not a tag we know about. */
2384 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2385 struct gdb_ext_thread_info
*info
)
2387 struct remote_state
*rs
= get_remote_state ();
2390 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2394 if (rs
->buf
[0] == '\0')
2397 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2402 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2405 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2406 threadref
*nextthread
)
2408 *pkt
++ = 'q'; /* info query packet */
2409 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2410 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2411 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2412 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2417 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2420 parse_threadlist_response (char *pkt
, int result_limit
,
2421 threadref
*original_echo
, threadref
*resultlist
,
2424 struct remote_state
*rs
= get_remote_state ();
2426 int count
, resultcount
, done
;
2429 /* Assume the 'q' and 'M chars have been stripped. */
2430 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2431 /* done parse past here */
2432 pkt
= unpack_byte (pkt
, &count
); /* count field */
2433 pkt
= unpack_nibble (pkt
, &done
);
2434 /* The first threadid is the argument threadid. */
2435 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2436 while ((count
-- > 0) && (pkt
< limit
))
2438 pkt
= unpack_threadid (pkt
, resultlist
++);
2439 if (resultcount
++ >= result_limit
)
2448 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2449 int *done
, int *result_count
, threadref
*threadlist
)
2451 struct remote_state
*rs
= get_remote_state ();
2454 /* Trancate result limit to be smaller than the packet size. */
2455 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2456 >= get_remote_packet_size ())
2457 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2459 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2461 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2463 if (*rs
->buf
== '\0')
2467 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2468 &rs
->echo_nextthread
, threadlist
, done
);
2470 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2472 /* FIXME: This is a good reason to drop the packet. */
2473 /* Possably, there is a duplicate response. */
2475 retransmit immediatly - race conditions
2476 retransmit after timeout - yes
2478 wait for packet, then exit
2480 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2481 return 0; /* I choose simply exiting. */
2483 if (*result_count
<= 0)
2487 warning (_("RMT ERROR : failed to get remote thread list."));
2490 return result
; /* break; */
2492 if (*result_count
> result_limit
)
2495 warning (_("RMT ERROR: threadlist response longer than requested."));
2501 /* This is the interface between remote and threads, remotes upper
2504 /* remote_find_new_threads retrieves the thread list and for each
2505 thread in the list, looks up the thread in GDB's internal list,
2506 adding the thread if it does not already exist. This involves
2507 getting partial thread lists from the remote target so, polling the
2508 quit_flag is required. */
2512 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2515 struct remote_state
*rs
= get_remote_state ();
2516 int done
, i
, result_count
;
2524 if (loopcount
++ > looplimit
)
2527 warning (_("Remote fetch threadlist -infinite loop-."));
2530 if (!remote_get_threadlist (startflag
, &rs
->nextthread
,
2531 MAXTHREADLISTRESULTS
,
2532 &done
, &result_count
, rs
->resultthreadlist
))
2537 /* Clear for later iterations. */
2539 /* Setup to resume next batch of thread references, set nextthread. */
2540 if (result_count
>= 1)
2541 copy_threadref (&rs
->nextthread
,
2542 &rs
->resultthreadlist
[result_count
- 1]);
2544 while (result_count
--)
2545 if (!(result
= (*stepfunction
) (&rs
->resultthreadlist
[i
++], context
)))
2552 remote_newthread_step (threadref
*ref
, void *context
)
2554 int pid
= ptid_get_pid (inferior_ptid
);
2555 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2557 if (!in_thread_list (ptid
))
2559 return 1; /* continue iterator */
2562 #define CRAZY_MAX_THREADS 1000
2565 remote_current_thread (ptid_t oldpid
)
2567 struct remote_state
*rs
= get_remote_state ();
2570 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2571 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2572 return read_ptid (&rs
->buf
[2], NULL
);
2577 /* Find new threads for info threads command.
2578 * Original version, using John Metzler's thread protocol.
2582 remote_find_new_threads (void)
2584 remote_threadlist_iterator (remote_newthread_step
, 0,
2588 #if defined(HAVE_LIBEXPAT)
2590 typedef struct thread_item
2596 DEF_VEC_O(thread_item_t
);
2598 struct threads_parsing_context
2600 VEC (thread_item_t
) *items
;
2604 start_thread (struct gdb_xml_parser
*parser
,
2605 const struct gdb_xml_element
*element
,
2606 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2608 struct threads_parsing_context
*data
= user_data
;
2610 struct thread_item item
;
2612 struct gdb_xml_value
*attr
;
2614 id
= xml_find_attribute (attributes
, "id")->value
;
2615 item
.ptid
= read_ptid (id
, NULL
);
2617 attr
= xml_find_attribute (attributes
, "core");
2619 item
.core
= *(ULONGEST
*) attr
->value
;
2625 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2629 end_thread (struct gdb_xml_parser
*parser
,
2630 const struct gdb_xml_element
*element
,
2631 void *user_data
, const char *body_text
)
2633 struct threads_parsing_context
*data
= user_data
;
2635 if (body_text
&& *body_text
)
2636 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2639 const struct gdb_xml_attribute thread_attributes
[] = {
2640 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2641 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2642 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2645 const struct gdb_xml_element thread_children
[] = {
2646 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2649 const struct gdb_xml_element threads_children
[] = {
2650 { "thread", thread_attributes
, thread_children
,
2651 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2652 start_thread
, end_thread
},
2653 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2656 const struct gdb_xml_element threads_elements
[] = {
2657 { "threads", NULL
, threads_children
,
2658 GDB_XML_EF_NONE
, NULL
, NULL
},
2659 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2662 /* Discard the contents of the constructed thread info context. */
2665 clear_threads_parsing_context (void *p
)
2667 struct threads_parsing_context
*context
= p
;
2669 struct thread_item
*item
;
2671 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2672 xfree (item
->extra
);
2674 VEC_free (thread_item_t
, context
->items
);
2680 * Find all threads for info threads command.
2681 * Uses new thread protocol contributed by Cisco.
2682 * Falls back and attempts to use the older method (above)
2683 * if the target doesn't respond to the new method.
2687 remote_threads_info (struct target_ops
*ops
)
2689 struct remote_state
*rs
= get_remote_state ();
2693 if (rs
->remote_desc
== 0) /* paranoia */
2694 error (_("Command can only be used when connected to the remote target."));
2696 #if defined(HAVE_LIBEXPAT)
2697 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2699 char *xml
= target_read_stralloc (¤t_target
,
2700 TARGET_OBJECT_THREADS
, NULL
);
2702 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2706 struct threads_parsing_context context
;
2708 context
.items
= NULL
;
2709 make_cleanup (clear_threads_parsing_context
, &context
);
2711 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2712 threads_elements
, xml
, &context
) == 0)
2715 struct thread_item
*item
;
2718 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2721 if (!ptid_equal (item
->ptid
, null_ptid
))
2723 struct private_thread_info
*info
;
2724 /* In non-stop mode, we assume new found threads
2725 are running until proven otherwise with a
2726 stop reply. In all-stop, we can only get
2727 here if all threads are stopped. */
2728 int running
= non_stop
? 1 : 0;
2730 remote_notice_new_inferior (item
->ptid
, running
);
2732 info
= demand_private_info (item
->ptid
);
2733 info
->core
= item
->core
;
2734 info
->extra
= item
->extra
;
2741 do_cleanups (back_to
);
2746 if (rs
->use_threadinfo_query
)
2748 putpkt ("qfThreadInfo");
2749 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2751 if (bufp
[0] != '\0') /* q packet recognized */
2753 struct cleanup
*old_chain
;
2756 /* remote_notice_new_inferior (in the loop below) may make
2757 new RSP calls, which clobber rs->buf. Work with a
2759 bufp
= saved_reply
= xstrdup (rs
->buf
);
2760 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2762 while (*bufp
++ == 'm') /* reply contains one or more TID */
2766 new_thread
= read_ptid (bufp
, &bufp
);
2767 if (!ptid_equal (new_thread
, null_ptid
))
2769 /* In non-stop mode, we assume new found threads
2770 are running until proven otherwise with a
2771 stop reply. In all-stop, we can only get
2772 here if all threads are stopped. */
2773 int running
= non_stop
? 1 : 0;
2775 remote_notice_new_inferior (new_thread
, running
);
2778 while (*bufp
++ == ','); /* comma-separated list */
2779 free_current_contents (&saved_reply
);
2780 putpkt ("qsThreadInfo");
2781 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2782 bufp
= saved_reply
= xstrdup (rs
->buf
);
2784 do_cleanups (old_chain
);
2789 /* Only qfThreadInfo is supported in non-stop mode. */
2793 /* Else fall back to old method based on jmetzler protocol. */
2794 rs
->use_threadinfo_query
= 0;
2795 remote_find_new_threads ();
2800 * Collect a descriptive string about the given thread.
2801 * The target may say anything it wants to about the thread
2802 * (typically info about its blocked / runnable state, name, etc.).
2803 * This string will appear in the info threads display.
2805 * Optional: targets are not required to implement this function.
2809 remote_threads_extra_info (struct thread_info
*tp
)
2811 struct remote_state
*rs
= get_remote_state ();
2815 struct gdb_ext_thread_info threadinfo
;
2816 static char display_buf
[100]; /* arbitrary... */
2817 int n
= 0; /* position in display_buf */
2819 if (rs
->remote_desc
== 0) /* paranoia */
2820 internal_error (__FILE__
, __LINE__
,
2821 _("remote_threads_extra_info"));
2823 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2824 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2825 /* This is the main thread which was added by GDB. The remote
2826 server doesn't know about it. */
2829 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2831 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2833 if (info
&& info
->private)
2834 return info
->private->extra
;
2839 if (rs
->use_threadextra_query
)
2842 char *endb
= rs
->buf
+ get_remote_packet_size ();
2844 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2846 write_ptid (b
, endb
, tp
->ptid
);
2849 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2850 if (rs
->buf
[0] != 0)
2852 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2853 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2854 display_buf
[result
] = '\0';
2859 /* If the above query fails, fall back to the old method. */
2860 rs
->use_threadextra_query
= 0;
2861 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2862 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2863 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2864 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2865 if (threadinfo
.active
)
2867 if (*threadinfo
.shortname
)
2868 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2869 " Name: %s,", threadinfo
.shortname
);
2870 if (*threadinfo
.display
)
2871 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2872 " State: %s,", threadinfo
.display
);
2873 if (*threadinfo
.more_display
)
2874 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2875 " Priority: %s", threadinfo
.more_display
);
2879 /* For purely cosmetic reasons, clear up trailing commas. */
2880 if (',' == display_buf
[n
-1])
2881 display_buf
[n
-1] = ' ';
2890 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2891 struct static_tracepoint_marker
*marker
)
2893 struct remote_state
*rs
= get_remote_state ();
2896 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2898 p
+= hexnumstr (p
, addr
);
2900 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2904 error (_("Remote failure reply: %s"), p
);
2908 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2915 static VEC(static_tracepoint_marker_p
) *
2916 remote_static_tracepoint_markers_by_strid (const char *strid
)
2918 struct remote_state
*rs
= get_remote_state ();
2919 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2920 struct static_tracepoint_marker
*marker
= NULL
;
2921 struct cleanup
*old_chain
;
2924 /* Ask for a first packet of static tracepoint marker
2927 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2930 error (_("Remote failure reply: %s"), p
);
2932 old_chain
= make_cleanup (free_current_marker
, &marker
);
2937 marker
= XCNEW (struct static_tracepoint_marker
);
2941 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2943 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2945 VEC_safe_push (static_tracepoint_marker_p
,
2951 release_static_tracepoint_marker (marker
);
2952 memset (marker
, 0, sizeof (*marker
));
2955 while (*p
++ == ','); /* comma-separated list */
2956 /* Ask for another packet of static tracepoint definition. */
2958 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2962 do_cleanups (old_chain
);
2967 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2970 remote_get_ada_task_ptid (long lwp
, long thread
)
2972 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2976 /* Restart the remote side; this is an extended protocol operation. */
2979 extended_remote_restart (void)
2981 struct remote_state
*rs
= get_remote_state ();
2983 /* Send the restart command; for reasons I don't understand the
2984 remote side really expects a number after the "R". */
2985 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2988 remote_fileio_reset ();
2991 /* Clean up connection to a remote debugger. */
2994 remote_close (struct target_ops
*self
)
2996 struct remote_state
*rs
= get_remote_state ();
2998 if (rs
->remote_desc
== NULL
)
2999 return; /* already closed */
3001 /* Make sure we leave stdin registered in the event loop, and we
3002 don't leave the async SIGINT signal handler installed. */
3003 remote_terminal_ours ();
3005 serial_close (rs
->remote_desc
);
3006 rs
->remote_desc
= NULL
;
3008 /* We don't have a connection to the remote stub anymore. Get rid
3009 of all the inferiors and their threads we were controlling.
3010 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3011 will be unable to find the thread corresponding to (pid, 0, 0). */
3012 inferior_ptid
= null_ptid
;
3013 discard_all_inferiors ();
3015 /* We are closing the remote target, so we should discard
3016 everything of this target. */
3017 discard_pending_stop_replies_in_queue (rs
);
3019 if (remote_async_inferior_event_token
)
3020 delete_async_event_handler (&remote_async_inferior_event_token
);
3022 remote_notif_state_xfree (rs
->notif_state
);
3024 trace_reset_local_state ();
3027 /* Query the remote side for the text, data and bss offsets. */
3032 struct remote_state
*rs
= get_remote_state ();
3035 int lose
, num_segments
= 0, do_sections
, do_segments
;
3036 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3037 struct section_offsets
*offs
;
3038 struct symfile_segment_data
*data
;
3040 if (symfile_objfile
== NULL
)
3043 putpkt ("qOffsets");
3044 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3047 if (buf
[0] == '\000')
3048 return; /* Return silently. Stub doesn't support
3052 warning (_("Remote failure reply: %s"), buf
);
3056 /* Pick up each field in turn. This used to be done with scanf, but
3057 scanf will make trouble if CORE_ADDR size doesn't match
3058 conversion directives correctly. The following code will work
3059 with any size of CORE_ADDR. */
3060 text_addr
= data_addr
= bss_addr
= 0;
3064 if (strncmp (ptr
, "Text=", 5) == 0)
3067 /* Don't use strtol, could lose on big values. */
3068 while (*ptr
&& *ptr
!= ';')
3069 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3071 if (strncmp (ptr
, ";Data=", 6) == 0)
3074 while (*ptr
&& *ptr
!= ';')
3075 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3080 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3083 while (*ptr
&& *ptr
!= ';')
3084 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3086 if (bss_addr
!= data_addr
)
3087 warning (_("Target reported unsupported offsets: %s"), buf
);
3092 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3095 /* Don't use strtol, could lose on big values. */
3096 while (*ptr
&& *ptr
!= ';')
3097 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3100 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3103 while (*ptr
&& *ptr
!= ';')
3104 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3112 error (_("Malformed response to offset query, %s"), buf
);
3113 else if (*ptr
!= '\0')
3114 warning (_("Target reported unsupported offsets: %s"), buf
);
3116 offs
= ((struct section_offsets
*)
3117 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3118 memcpy (offs
, symfile_objfile
->section_offsets
,
3119 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3121 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3122 do_segments
= (data
!= NULL
);
3123 do_sections
= num_segments
== 0;
3125 if (num_segments
> 0)
3127 segments
[0] = text_addr
;
3128 segments
[1] = data_addr
;
3130 /* If we have two segments, we can still try to relocate everything
3131 by assuming that the .text and .data offsets apply to the whole
3132 text and data segments. Convert the offsets given in the packet
3133 to base addresses for symfile_map_offsets_to_segments. */
3134 else if (data
&& data
->num_segments
== 2)
3136 segments
[0] = data
->segment_bases
[0] + text_addr
;
3137 segments
[1] = data
->segment_bases
[1] + data_addr
;
3140 /* If the object file has only one segment, assume that it is text
3141 rather than data; main programs with no writable data are rare,
3142 but programs with no code are useless. Of course the code might
3143 have ended up in the data segment... to detect that we would need
3144 the permissions here. */
3145 else if (data
&& data
->num_segments
== 1)
3147 segments
[0] = data
->segment_bases
[0] + text_addr
;
3150 /* There's no way to relocate by segment. */
3156 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3157 offs
, num_segments
, segments
);
3159 if (ret
== 0 && !do_sections
)
3160 error (_("Can not handle qOffsets TextSeg "
3161 "response with this symbol file"));
3168 free_symfile_segment_data (data
);
3172 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3174 /* This is a temporary kludge to force data and bss to use the
3175 same offsets because that's what nlmconv does now. The real
3176 solution requires changes to the stub and remote.c that I
3177 don't have time to do right now. */
3179 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3180 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3183 objfile_relocate (symfile_objfile
, offs
);
3186 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3187 threads we know are stopped already. This is used during the
3188 initial remote connection in non-stop mode --- threads that are
3189 reported as already being stopped are left stopped. */
3192 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3194 /* If we have a stop reply for this thread, it must be stopped. */
3195 if (peek_stop_reply (thread
->ptid
))
3196 set_stop_requested (thread
->ptid
, 1);
3201 /* Send interrupt_sequence to remote target. */
3203 send_interrupt_sequence (void)
3205 struct remote_state
*rs
= get_remote_state ();
3207 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3208 remote_serial_write ("\x03", 1);
3209 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3210 serial_send_break (rs
->remote_desc
);
3211 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3213 serial_send_break (rs
->remote_desc
);
3214 remote_serial_write ("g", 1);
3217 internal_error (__FILE__
, __LINE__
,
3218 _("Invalid value for interrupt_sequence_mode: %s."),
3219 interrupt_sequence_mode
);
3223 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3224 and extract the PTID. Returns NULL_PTID if not found. */
3227 stop_reply_extract_thread (char *stop_reply
)
3229 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3233 /* Txx r:val ; r:val (...) */
3236 /* Look for "register" named "thread". */
3241 p1
= strchr (p
, ':');
3245 if (strncmp (p
, "thread", p1
- p
) == 0)
3246 return read_ptid (++p1
, &p
);
3248 p1
= strchr (p
, ';');
3260 /* Determine the remote side's current thread. If we have a stop
3261 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3262 "thread" register we can extract the current thread from. If not,
3263 ask the remote which is the current thread with qC. The former
3264 method avoids a roundtrip. */
3267 get_current_thread (char *wait_status
)
3271 /* Note we don't use remote_parse_stop_reply as that makes use of
3272 the target architecture, which we haven't yet fully determined at
3274 if (wait_status
!= NULL
)
3275 ptid
= stop_reply_extract_thread (wait_status
);
3276 if (ptid_equal (ptid
, null_ptid
))
3277 ptid
= remote_current_thread (inferior_ptid
);
3282 /* Query the remote target for which is the current thread/process,
3283 add it to our tables, and update INFERIOR_PTID. The caller is
3284 responsible for setting the state such that the remote end is ready
3285 to return the current thread.
3287 This function is called after handling the '?' or 'vRun' packets,
3288 whose response is a stop reply from which we can also try
3289 extracting the thread. If the target doesn't support the explicit
3290 qC query, we infer the current thread from that stop reply, passed
3291 in in WAIT_STATUS, which may be NULL. */
3294 add_current_inferior_and_thread (char *wait_status
)
3296 struct remote_state
*rs
= get_remote_state ();
3298 ptid_t ptid
= null_ptid
;
3300 inferior_ptid
= null_ptid
;
3302 /* Now, if we have thread information, update inferior_ptid. */
3303 ptid
= get_current_thread (wait_status
);
3305 if (!ptid_equal (ptid
, null_ptid
))
3307 if (!remote_multi_process_p (rs
))
3310 inferior_ptid
= ptid
;
3314 /* Without this, some commands which require an active target
3315 (such as kill) won't work. This variable serves (at least)
3316 double duty as both the pid of the target process (if it has
3317 such), and as a flag indicating that a target is active. */
3318 inferior_ptid
= magic_null_ptid
;
3322 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3324 /* Add the main thread. */
3325 add_thread_silent (inferior_ptid
);
3329 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3331 struct remote_state
*rs
= get_remote_state ();
3332 struct packet_config
*noack_config
;
3333 char *wait_status
= NULL
;
3335 immediate_quit
++; /* Allow user to interrupt it. */
3338 if (interrupt_on_connect
)
3339 send_interrupt_sequence ();
3341 /* Ack any packet which the remote side has already sent. */
3342 serial_write (rs
->remote_desc
, "+", 1);
3344 /* Signal other parts that we're going through the initial setup,
3345 and so things may not be stable yet. */
3346 rs
->starting_up
= 1;
3348 /* The first packet we send to the target is the optional "supported
3349 packets" request. If the target can answer this, it will tell us
3350 which later probes to skip. */
3351 remote_query_supported ();
3353 /* If the stub wants to get a QAllow, compose one and send it. */
3354 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3355 remote_set_permissions ();
3357 /* Next, we possibly activate noack mode.
3359 If the QStartNoAckMode packet configuration is set to AUTO,
3360 enable noack mode if the stub reported a wish for it with
3363 If set to TRUE, then enable noack mode even if the stub didn't
3364 report it in qSupported. If the stub doesn't reply OK, the
3365 session ends with an error.
3367 If FALSE, then don't activate noack mode, regardless of what the
3368 stub claimed should be the default with qSupported. */
3370 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3372 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3373 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3374 && noack_config
->support
== PACKET_ENABLE
))
3376 putpkt ("QStartNoAckMode");
3377 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3378 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3384 /* Tell the remote that we are using the extended protocol. */
3386 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3389 /* Let the target know which signals it is allowed to pass down to
3391 update_signals_program_target ();
3393 /* Next, if the target can specify a description, read it. We do
3394 this before anything involving memory or registers. */
3395 target_find_description ();
3397 /* Next, now that we know something about the target, update the
3398 address spaces in the program spaces. */
3399 update_address_spaces ();
3401 /* On OSs where the list of libraries is global to all
3402 processes, we fetch them early. */
3403 if (gdbarch_has_global_solist (target_gdbarch ()))
3404 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3408 if (!rs
->non_stop_aware
)
3409 error (_("Non-stop mode requested, but remote "
3410 "does not support non-stop"));
3412 putpkt ("QNonStop:1");
3413 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3415 if (strcmp (rs
->buf
, "OK") != 0)
3416 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3418 /* Find about threads and processes the stub is already
3419 controlling. We default to adding them in the running state.
3420 The '?' query below will then tell us about which threads are
3422 remote_threads_info (target
);
3424 else if (rs
->non_stop_aware
)
3426 /* Don't assume that the stub can operate in all-stop mode.
3427 Request it explicitly. */
3428 putpkt ("QNonStop:0");
3429 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3431 if (strcmp (rs
->buf
, "OK") != 0)
3432 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3435 /* Upload TSVs regardless of whether the target is running or not. The
3436 remote stub, such as GDBserver, may have some predefined or builtin
3437 TSVs, even if the target is not running. */
3438 if (remote_get_trace_status (current_trace_status ()) != -1)
3440 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3442 remote_upload_trace_state_variables (&uploaded_tsvs
);
3443 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3446 /* Check whether the target is running now. */
3448 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3454 struct inferior
*inf
;
3456 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3459 error (_("The target is not running (try extended-remote?)"));
3461 /* We're connected, but not running. Drop out before we
3462 call start_remote. */
3463 rs
->starting_up
= 0;
3468 /* Save the reply for later. */
3469 wait_status
= alloca (strlen (rs
->buf
) + 1);
3470 strcpy (wait_status
, rs
->buf
);
3473 /* Fetch thread list. */
3474 target_find_new_threads ();
3476 /* Let the stub know that we want it to return the thread. */
3477 set_continue_thread (minus_one_ptid
);
3479 if (thread_count () == 0)
3481 /* Target has no concept of threads at all. GDB treats
3482 non-threaded target as single-threaded; add a main
3484 add_current_inferior_and_thread (wait_status
);
3488 /* We have thread information; select the thread the target
3489 says should be current. If we're reconnecting to a
3490 multi-threaded program, this will ideally be the thread
3491 that last reported an event before GDB disconnected. */
3492 inferior_ptid
= get_current_thread (wait_status
);
3493 if (ptid_equal (inferior_ptid
, null_ptid
))
3495 /* Odd... The target was able to list threads, but not
3496 tell us which thread was current (no "thread"
3497 register in T stop reply?). Just pick the first
3498 thread in the thread list then. */
3499 inferior_ptid
= thread_list
->ptid
;
3503 /* init_wait_for_inferior should be called before get_offsets in order
3504 to manage `inserted' flag in bp loc in a correct state.
3505 breakpoint_init_inferior, called from init_wait_for_inferior, set
3506 `inserted' flag to 0, while before breakpoint_re_set, called from
3507 start_remote, set `inserted' flag to 1. In the initialization of
3508 inferior, breakpoint_init_inferior should be called first, and then
3509 breakpoint_re_set can be called. If this order is broken, state of
3510 `inserted' flag is wrong, and cause some problems on breakpoint
3512 init_wait_for_inferior ();
3514 get_offsets (); /* Get text, data & bss offsets. */
3516 /* If we could not find a description using qXfer, and we know
3517 how to do it some other way, try again. This is not
3518 supported for non-stop; it could be, but it is tricky if
3519 there are no stopped threads when we connect. */
3520 if (remote_read_description_p (target
)
3521 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3523 target_clear_description ();
3524 target_find_description ();
3527 /* Use the previously fetched status. */
3528 gdb_assert (wait_status
!= NULL
);
3529 strcpy (rs
->buf
, wait_status
);
3530 rs
->cached_wait_status
= 1;
3533 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3537 /* Clear WFI global state. Do this before finding about new
3538 threads and inferiors, and setting the current inferior.
3539 Otherwise we would clear the proceed status of the current
3540 inferior when we want its stop_soon state to be preserved
3541 (see notice_new_inferior). */
3542 init_wait_for_inferior ();
3544 /* In non-stop, we will either get an "OK", meaning that there
3545 are no stopped threads at this time; or, a regular stop
3546 reply. In the latter case, there may be more than one thread
3547 stopped --- we pull them all out using the vStopped
3549 if (strcmp (rs
->buf
, "OK") != 0)
3551 struct notif_client
*notif
= ¬if_client_stop
;
3553 /* remote_notif_get_pending_replies acks this one, and gets
3555 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3556 = remote_notif_parse (notif
, rs
->buf
);
3557 remote_notif_get_pending_events (notif
);
3559 /* Make sure that threads that were stopped remain
3561 iterate_over_threads (set_stop_requested_callback
, NULL
);
3564 if (target_can_async_p ())
3565 target_async (inferior_event_handler
, 0);
3567 if (thread_count () == 0)
3570 error (_("The target is not running (try extended-remote?)"));
3572 /* We're connected, but not running. Drop out before we
3573 call start_remote. */
3574 rs
->starting_up
= 0;
3578 /* Let the stub know that we want it to return the thread. */
3580 /* Force the stub to choose a thread. */
3581 set_general_thread (null_ptid
);
3584 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3585 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3586 error (_("remote didn't report the current thread in non-stop mode"));
3588 get_offsets (); /* Get text, data & bss offsets. */
3590 /* In non-stop mode, any cached wait status will be stored in
3591 the stop reply queue. */
3592 gdb_assert (wait_status
== NULL
);
3594 /* Report all signals during attach/startup. */
3595 remote_pass_signals (0, NULL
);
3598 /* If we connected to a live target, do some additional setup. */
3599 if (target_has_execution
)
3601 if (symfile_objfile
) /* No use without a symbol-file. */
3602 remote_check_symbols ();
3605 /* Possibly the target has been engaged in a trace run started
3606 previously; find out where things are at. */
3607 if (remote_get_trace_status (current_trace_status ()) != -1)
3609 struct uploaded_tp
*uploaded_tps
= NULL
;
3611 if (current_trace_status ()->running
)
3612 printf_filtered (_("Trace is already running on the target.\n"));
3614 remote_upload_tracepoints (&uploaded_tps
);
3616 merge_uploaded_tracepoints (&uploaded_tps
);
3619 /* The thread and inferior lists are now synchronized with the
3620 target, our symbols have been relocated, and we're merged the
3621 target's tracepoints with ours. We're done with basic start
3623 rs
->starting_up
= 0;
3625 /* If breakpoints are global, insert them now. */
3626 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3627 && breakpoints_always_inserted_mode ())
3628 insert_breakpoints ();
3631 /* Open a connection to a remote debugger.
3632 NAME is the filename used for communication. */
3635 remote_open (char *name
, int from_tty
)
3637 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3640 /* Open a connection to a remote debugger using the extended
3641 remote gdb protocol. NAME is the filename used for communication. */
3644 extended_remote_open (char *name
, int from_tty
)
3646 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3649 /* Generic code for opening a connection to a remote target. */
3652 init_all_packet_configs (void)
3656 for (i
= 0; i
< PACKET_MAX
; i
++)
3657 update_packet_config (&remote_protocol_packets
[i
]);
3660 /* Symbol look-up. */
3663 remote_check_symbols (void)
3665 struct remote_state
*rs
= get_remote_state ();
3666 char *msg
, *reply
, *tmp
;
3667 struct minimal_symbol
*sym
;
3670 /* The remote side has no concept of inferiors that aren't running
3671 yet, it only knows about running processes. If we're connected
3672 but our current inferior is not running, we should not invite the
3673 remote target to request symbol lookups related to its
3674 (unrelated) current process. */
3675 if (!target_has_execution
)
3678 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3681 /* Make sure the remote is pointing at the right process. Note
3682 there's no way to select "no process". */
3683 set_general_process ();
3685 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3686 because we need both at the same time. */
3687 msg
= alloca (get_remote_packet_size ());
3689 /* Invite target to request symbol lookups. */
3691 putpkt ("qSymbol::");
3692 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3693 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3696 while (strncmp (reply
, "qSymbol:", 8) == 0)
3699 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3701 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3703 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3706 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3707 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3709 /* If this is a function address, return the start of code
3710 instead of any data function descriptor. */
3711 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3715 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3716 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3720 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3725 static struct serial
*
3726 remote_serial_open (char *name
)
3728 static int udp_warning
= 0;
3730 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3731 of in ser-tcp.c, because it is the remote protocol assuming that the
3732 serial connection is reliable and not the serial connection promising
3734 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3736 warning (_("The remote protocol may be unreliable over UDP.\n"
3737 "Some events may be lost, rendering further debugging "
3742 return serial_open (name
);
3745 /* Inform the target of our permission settings. The permission flags
3746 work without this, but if the target knows the settings, it can do
3747 a couple things. First, it can add its own check, to catch cases
3748 that somehow manage to get by the permissions checks in target
3749 methods. Second, if the target is wired to disallow particular
3750 settings (for instance, a system in the field that is not set up to
3751 be able to stop at a breakpoint), it can object to any unavailable
3755 remote_set_permissions (void)
3757 struct remote_state
*rs
= get_remote_state ();
3759 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3760 "WriteReg:%x;WriteMem:%x;"
3761 "InsertBreak:%x;InsertTrace:%x;"
3762 "InsertFastTrace:%x;Stop:%x",
3763 may_write_registers
, may_write_memory
,
3764 may_insert_breakpoints
, may_insert_tracepoints
,
3765 may_insert_fast_tracepoints
, may_stop
);
3767 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3769 /* If the target didn't like the packet, warn the user. Do not try
3770 to undo the user's settings, that would just be maddening. */
3771 if (strcmp (rs
->buf
, "OK") != 0)
3772 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3775 /* This type describes each known response to the qSupported
3777 struct protocol_feature
3779 /* The name of this protocol feature. */
3782 /* The default for this protocol feature. */
3783 enum packet_support default_support
;
3785 /* The function to call when this feature is reported, or after
3786 qSupported processing if the feature is not supported.
3787 The first argument points to this structure. The second
3788 argument indicates whether the packet requested support be
3789 enabled, disabled, or probed (or the default, if this function
3790 is being called at the end of processing and this feature was
3791 not reported). The third argument may be NULL; if not NULL, it
3792 is a NUL-terminated string taken from the packet following
3793 this feature's name and an equals sign. */
3794 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3797 /* The corresponding packet for this feature. Only used if
3798 FUNC is remote_supported_packet. */
3803 remote_supported_packet (const struct protocol_feature
*feature
,
3804 enum packet_support support
,
3805 const char *argument
)
3809 warning (_("Remote qSupported response supplied an unexpected value for"
3810 " \"%s\"."), feature
->name
);
3814 if (remote_protocol_packets
[feature
->packet
].support
3815 == PACKET_SUPPORT_UNKNOWN
)
3816 remote_protocol_packets
[feature
->packet
].support
= support
;
3820 remote_packet_size (const struct protocol_feature
*feature
,
3821 enum packet_support support
, const char *value
)
3823 struct remote_state
*rs
= get_remote_state ();
3828 if (support
!= PACKET_ENABLE
)
3831 if (value
== NULL
|| *value
== '\0')
3833 warning (_("Remote target reported \"%s\" without a size."),
3839 packet_size
= strtol (value
, &value_end
, 16);
3840 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3842 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3843 feature
->name
, value
);
3847 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3849 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3850 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3851 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3854 /* Record the new maximum packet size. */
3855 rs
->explicit_packet_size
= packet_size
;
3859 remote_multi_process_feature (const struct protocol_feature
*feature
,
3860 enum packet_support support
, const char *value
)
3862 struct remote_state
*rs
= get_remote_state ();
3864 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3868 remote_non_stop_feature (const struct protocol_feature
*feature
,
3869 enum packet_support support
, const char *value
)
3871 struct remote_state
*rs
= get_remote_state ();
3873 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3877 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3878 enum packet_support support
,
3881 struct remote_state
*rs
= get_remote_state ();
3883 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3887 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3888 enum packet_support support
,
3891 struct remote_state
*rs
= get_remote_state ();
3893 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3897 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3898 enum packet_support support
,
3901 struct remote_state
*rs
= get_remote_state ();
3903 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3907 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3908 enum packet_support support
,
3911 struct remote_state
*rs
= get_remote_state ();
3913 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3917 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3918 enum packet_support support
,
3921 struct remote_state
*rs
= get_remote_state ();
3923 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3927 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3928 enum packet_support support
,
3931 struct remote_state
*rs
= get_remote_state ();
3933 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3937 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3938 enum packet_support support
,
3941 struct remote_state
*rs
= get_remote_state ();
3943 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3947 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3948 enum packet_support support
,
3951 struct remote_state
*rs
= get_remote_state ();
3953 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3957 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3958 enum packet_support support
,
3961 struct remote_state
*rs
= get_remote_state ();
3963 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3967 remote_augmented_libraries_svr4_read_feature
3968 (const struct protocol_feature
*feature
,
3969 enum packet_support support
, const char *value
)
3971 struct remote_state
*rs
= get_remote_state ();
3973 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3976 static const struct protocol_feature remote_protocol_features
[] = {
3977 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3978 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3979 PACKET_qXfer_auxv
},
3980 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3981 PACKET_qXfer_features
},
3982 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3983 PACKET_qXfer_libraries
},
3984 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3985 PACKET_qXfer_libraries_svr4
},
3986 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3987 remote_augmented_libraries_svr4_read_feature
, -1 },
3988 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3989 PACKET_qXfer_memory_map
},
3990 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3991 PACKET_qXfer_spu_read
},
3992 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3993 PACKET_qXfer_spu_write
},
3994 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3995 PACKET_qXfer_osdata
},
3996 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3997 PACKET_qXfer_threads
},
3998 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3999 PACKET_qXfer_traceframe_info
},
4000 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4001 PACKET_QPassSignals
},
4002 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_QProgramSignals
},
4004 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4005 PACKET_QStartNoAckMode
},
4006 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4007 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4008 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4009 PACKET_qXfer_siginfo_read
},
4010 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4011 PACKET_qXfer_siginfo_write
},
4012 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4013 PACKET_ConditionalTracepoints
},
4014 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4015 PACKET_ConditionalBreakpoints
},
4016 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4017 PACKET_BreakpointCommands
},
4018 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4019 PACKET_FastTracepoints
},
4020 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4021 PACKET_StaticTracepoints
},
4022 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4023 PACKET_InstallInTrace
},
4024 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4026 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4028 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4030 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4031 PACKET_TracepointSource
},
4032 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4034 { "EnableDisableTracepoints", PACKET_DISABLE
,
4035 remote_enable_disable_tracepoint_feature
, -1 },
4036 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4037 PACKET_qXfer_fdpic
},
4038 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4040 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4041 PACKET_QDisableRandomization
},
4042 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4043 { "QTBuffer:size", PACKET_DISABLE
,
4044 remote_supported_packet
, PACKET_QTBuffer_size
},
4045 { "tracenz", PACKET_DISABLE
,
4046 remote_string_tracing_feature
, -1 },
4047 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4048 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4049 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4050 PACKET_qXfer_btrace
}
4053 static char *remote_support_xml
;
4055 /* Register string appended to "xmlRegisters=" in qSupported query. */
4058 register_remote_support_xml (const char *xml
)
4060 #if defined(HAVE_LIBEXPAT)
4061 if (remote_support_xml
== NULL
)
4062 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4065 char *copy
= xstrdup (remote_support_xml
+ 13);
4066 char *p
= strtok (copy
, ",");
4070 if (strcmp (p
, xml
) == 0)
4077 while ((p
= strtok (NULL
, ",")) != NULL
);
4080 remote_support_xml
= reconcat (remote_support_xml
,
4081 remote_support_xml
, ",", xml
,
4088 remote_query_supported_append (char *msg
, const char *append
)
4091 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4093 return xstrdup (append
);
4097 remote_query_supported (void)
4099 struct remote_state
*rs
= get_remote_state ();
4102 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4104 /* The packet support flags are handled differently for this packet
4105 than for most others. We treat an error, a disabled packet, and
4106 an empty response identically: any features which must be reported
4107 to be used will be automatically disabled. An empty buffer
4108 accomplishes this, since that is also the representation for a list
4109 containing no features. */
4112 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4115 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4117 q
= remote_query_supported_append (q
, "multiprocess+");
4119 if (remote_support_xml
)
4120 q
= remote_query_supported_append (q
, remote_support_xml
);
4122 q
= remote_query_supported_append (q
, "qRelocInsn+");
4124 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4127 do_cleanups (old_chain
);
4129 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4131 /* If an error occured, warn, but do not return - just reset the
4132 buffer to empty and go on to disable features. */
4133 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4136 warning (_("Remote failure reply: %s"), rs
->buf
);
4141 memset (seen
, 0, sizeof (seen
));
4146 enum packet_support is_supported
;
4147 char *p
, *end
, *name_end
, *value
;
4149 /* First separate out this item from the rest of the packet. If
4150 there's another item after this, we overwrite the separator
4151 (terminated strings are much easier to work with). */
4153 end
= strchr (p
, ';');
4156 end
= p
+ strlen (p
);
4166 warning (_("empty item in \"qSupported\" response"));
4171 name_end
= strchr (p
, '=');
4174 /* This is a name=value entry. */
4175 is_supported
= PACKET_ENABLE
;
4176 value
= name_end
+ 1;
4185 is_supported
= PACKET_ENABLE
;
4189 is_supported
= PACKET_DISABLE
;
4193 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4197 warning (_("unrecognized item \"%s\" "
4198 "in \"qSupported\" response"), p
);
4204 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4205 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4207 const struct protocol_feature
*feature
;
4210 feature
= &remote_protocol_features
[i
];
4211 feature
->func (feature
, is_supported
, value
);
4216 /* If we increased the packet size, make sure to increase the global
4217 buffer size also. We delay this until after parsing the entire
4218 qSupported packet, because this is the same buffer we were
4220 if (rs
->buf_size
< rs
->explicit_packet_size
)
4222 rs
->buf_size
= rs
->explicit_packet_size
;
4223 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4226 /* Handle the defaults for unmentioned features. */
4227 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4230 const struct protocol_feature
*feature
;
4232 feature
= &remote_protocol_features
[i
];
4233 feature
->func (feature
, feature
->default_support
, NULL
);
4237 /* Remove any of the remote.c targets from target stack. Upper targets depend
4238 on it so remove them first. */
4241 remote_unpush_target (void)
4243 pop_all_targets_above (process_stratum
- 1);
4247 remote_open_1 (char *name
, int from_tty
,
4248 struct target_ops
*target
, int extended_p
)
4250 struct remote_state
*rs
= get_remote_state ();
4253 error (_("To open a remote debug connection, you need to specify what\n"
4254 "serial device is attached to the remote system\n"
4255 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4257 /* See FIXME above. */
4258 if (!target_async_permitted
)
4259 wait_forever_enabled_p
= 1;
4261 /* If we're connected to a running target, target_preopen will kill it.
4262 Ask this question first, before target_preopen has a chance to kill
4264 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4267 && !query (_("Already connected to a remote target. Disconnect? ")))
4268 error (_("Still connected."));
4271 /* Here the possibly existing remote target gets unpushed. */
4272 target_preopen (from_tty
);
4274 /* Make sure we send the passed signals list the next time we resume. */
4275 xfree (rs
->last_pass_packet
);
4276 rs
->last_pass_packet
= NULL
;
4278 /* Make sure we send the program signals list the next time we
4280 xfree (rs
->last_program_signals_packet
);
4281 rs
->last_program_signals_packet
= NULL
;
4283 remote_fileio_reset ();
4284 reopen_exec_file ();
4287 rs
->remote_desc
= remote_serial_open (name
);
4288 if (!rs
->remote_desc
)
4289 perror_with_name (name
);
4291 if (baud_rate
!= -1)
4293 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4295 /* The requested speed could not be set. Error out to
4296 top level after closing remote_desc. Take care to
4297 set remote_desc to NULL to avoid closing remote_desc
4299 serial_close (rs
->remote_desc
);
4300 rs
->remote_desc
= NULL
;
4301 perror_with_name (name
);
4305 serial_raw (rs
->remote_desc
);
4307 /* If there is something sitting in the buffer we might take it as a
4308 response to a command, which would be bad. */
4309 serial_flush_input (rs
->remote_desc
);
4313 puts_filtered ("Remote debugging using ");
4314 puts_filtered (name
);
4315 puts_filtered ("\n");
4317 push_target (target
); /* Switch to using remote target now. */
4319 /* Register extra event sources in the event loop. */
4320 remote_async_inferior_event_token
4321 = create_async_event_handler (remote_async_inferior_event_handler
,
4323 rs
->notif_state
= remote_notif_state_allocate ();
4325 /* Reset the target state; these things will be queried either by
4326 remote_query_supported or as they are needed. */
4327 init_all_packet_configs ();
4328 rs
->cached_wait_status
= 0;
4329 rs
->explicit_packet_size
= 0;
4331 rs
->multi_process_aware
= 0;
4332 rs
->extended
= extended_p
;
4333 rs
->non_stop_aware
= 0;
4334 rs
->waiting_for_stop_reply
= 0;
4335 rs
->ctrlc_pending_p
= 0;
4337 rs
->general_thread
= not_sent_ptid
;
4338 rs
->continue_thread
= not_sent_ptid
;
4339 rs
->remote_traceframe_number
= -1;
4341 /* Probe for ability to use "ThreadInfo" query, as required. */
4342 rs
->use_threadinfo_query
= 1;
4343 rs
->use_threadextra_query
= 1;
4345 if (target_async_permitted
)
4347 /* With this target we start out by owning the terminal. */
4348 remote_async_terminal_ours_p
= 1;
4350 /* FIXME: cagney/1999-09-23: During the initial connection it is
4351 assumed that the target is already ready and able to respond to
4352 requests. Unfortunately remote_start_remote() eventually calls
4353 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4354 around this. Eventually a mechanism that allows
4355 wait_for_inferior() to expect/get timeouts will be
4357 wait_forever_enabled_p
= 0;
4360 /* First delete any symbols previously loaded from shared libraries. */
4361 no_shared_libraries (NULL
, 0);
4364 init_thread_list ();
4366 /* Start the remote connection. If error() or QUIT, discard this
4367 target (we'd otherwise be in an inconsistent state) and then
4368 propogate the error on up the exception chain. This ensures that
4369 the caller doesn't stumble along blindly assuming that the
4370 function succeeded. The CLI doesn't have this problem but other
4371 UI's, such as MI do.
4373 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4374 this function should return an error indication letting the
4375 caller restore the previous state. Unfortunately the command
4376 ``target remote'' is directly wired to this function making that
4377 impossible. On a positive note, the CLI side of this problem has
4378 been fixed - the function set_cmd_context() makes it possible for
4379 all the ``target ....'' commands to share a common callback
4380 function. See cli-dump.c. */
4382 volatile struct gdb_exception ex
;
4384 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4386 remote_start_remote (from_tty
, target
, extended_p
);
4390 /* Pop the partially set up target - unless something else did
4391 already before throwing the exception. */
4392 if (rs
->remote_desc
!= NULL
)
4393 remote_unpush_target ();
4394 if (target_async_permitted
)
4395 wait_forever_enabled_p
= 1;
4396 throw_exception (ex
);
4400 if (target_async_permitted
)
4401 wait_forever_enabled_p
= 1;
4404 /* This takes a program previously attached to and detaches it. After
4405 this is done, GDB can be used to debug some other program. We
4406 better not have left any breakpoints in the target program or it'll
4407 die when it hits one. */
4410 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4412 int pid
= ptid_get_pid (inferior_ptid
);
4413 struct remote_state
*rs
= get_remote_state ();
4416 error (_("Argument given to \"detach\" when remotely debugging."));
4418 if (!target_has_execution
)
4419 error (_("No process to detach from."));
4423 char *exec_file
= get_exec_file (0);
4424 if (exec_file
== NULL
)
4426 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4427 target_pid_to_str (pid_to_ptid (pid
)));
4428 gdb_flush (gdb_stdout
);
4431 /* Tell the remote target to detach. */
4432 if (remote_multi_process_p (rs
))
4433 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4435 strcpy (rs
->buf
, "D");
4438 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4440 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4442 else if (rs
->buf
[0] == '\0')
4443 error (_("Remote doesn't know how to detach"));
4445 error (_("Can't detach process."));
4447 if (from_tty
&& !extended
)
4448 puts_filtered (_("Ending remote debugging.\n"));
4450 target_mourn_inferior ();
4454 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4456 remote_detach_1 (args
, from_tty
, 0);
4460 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4462 remote_detach_1 (args
, from_tty
, 1);
4465 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4468 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4471 error (_("Argument given to \"disconnect\" when remotely debugging."));
4473 /* Make sure we unpush even the extended remote targets; mourn
4474 won't do it. So call remote_mourn_1 directly instead of
4475 target_mourn_inferior. */
4476 remote_mourn_1 (target
);
4479 puts_filtered ("Ending remote debugging.\n");
4482 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4483 be chatty about it. */
4486 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4488 struct remote_state
*rs
= get_remote_state ();
4490 char *wait_status
= NULL
;
4492 pid
= parse_pid_to_attach (args
);
4494 /* Remote PID can be freely equal to getpid, do not check it here the same
4495 way as in other targets. */
4497 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4498 error (_("This target does not support attaching to a process"));
4502 char *exec_file
= get_exec_file (0);
4505 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4506 target_pid_to_str (pid_to_ptid (pid
)));
4508 printf_unfiltered (_("Attaching to %s\n"),
4509 target_pid_to_str (pid_to_ptid (pid
)));
4511 gdb_flush (gdb_stdout
);
4514 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4516 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4518 if (packet_ok (rs
->buf
,
4519 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4523 /* Save the reply for later. */
4524 wait_status
= alloca (strlen (rs
->buf
) + 1);
4525 strcpy (wait_status
, rs
->buf
);
4527 else if (strcmp (rs
->buf
, "OK") != 0)
4528 error (_("Attaching to %s failed with: %s"),
4529 target_pid_to_str (pid_to_ptid (pid
)),
4532 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4533 error (_("This target does not support attaching to a process"));
4535 error (_("Attaching to %s failed"),
4536 target_pid_to_str (pid_to_ptid (pid
)));
4538 set_current_inferior (remote_add_inferior (0, pid
, 1));
4540 inferior_ptid
= pid_to_ptid (pid
);
4544 struct thread_info
*thread
;
4546 /* Get list of threads. */
4547 remote_threads_info (target
);
4549 thread
= first_thread_of_process (pid
);
4551 inferior_ptid
= thread
->ptid
;
4553 inferior_ptid
= pid_to_ptid (pid
);
4555 /* Invalidate our notion of the remote current thread. */
4556 record_currthread (rs
, minus_one_ptid
);
4560 /* Now, if we have thread information, update inferior_ptid. */
4561 inferior_ptid
= remote_current_thread (inferior_ptid
);
4563 /* Add the main thread to the thread list. */
4564 add_thread_silent (inferior_ptid
);
4567 /* Next, if the target can specify a description, read it. We do
4568 this before anything involving memory or registers. */
4569 target_find_description ();
4573 /* Use the previously fetched status. */
4574 gdb_assert (wait_status
!= NULL
);
4576 if (target_can_async_p ())
4578 struct notif_event
*reply
4579 = remote_notif_parse (¬if_client_stop
, wait_status
);
4581 push_stop_reply ((struct stop_reply
*) reply
);
4583 target_async (inferior_event_handler
, 0);
4587 gdb_assert (wait_status
!= NULL
);
4588 strcpy (rs
->buf
, wait_status
);
4589 rs
->cached_wait_status
= 1;
4593 gdb_assert (wait_status
== NULL
);
4597 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4599 extended_remote_attach_1 (ops
, args
, from_tty
);
4603 /* Check for the availability of vCont. This function should also check
4607 remote_vcont_probe (struct remote_state
*rs
)
4611 strcpy (rs
->buf
, "vCont?");
4613 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4616 /* Make sure that the features we assume are supported. */
4617 if (strncmp (buf
, "vCont", 5) == 0)
4620 int support_s
, support_S
, support_c
, support_C
;
4626 rs
->supports_vCont
.t
= 0;
4627 rs
->supports_vCont
.r
= 0;
4628 while (p
&& *p
== ';')
4631 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4633 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4635 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4637 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4639 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4640 rs
->supports_vCont
.t
= 1;
4641 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4642 rs
->supports_vCont
.r
= 1;
4644 p
= strchr (p
, ';');
4647 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4648 BUF will make packet_ok disable the packet. */
4649 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4653 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4656 /* Helper function for building "vCont" resumptions. Write a
4657 resumption to P. ENDP points to one-passed-the-end of the buffer
4658 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4659 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4660 resumed thread should be single-stepped and/or signalled. If PTID
4661 equals minus_one_ptid, then all threads are resumed; if PTID
4662 represents a process, then all threads of the process are resumed;
4663 the thread to be stepped and/or signalled is given in the global
4667 append_resumption (char *p
, char *endp
,
4668 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4670 struct remote_state
*rs
= get_remote_state ();
4672 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4673 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4675 /* GDB is willing to range step. */
4676 && use_range_stepping
4677 /* Target supports range stepping. */
4678 && rs
->supports_vCont
.r
4679 /* We don't currently support range stepping multiple
4680 threads with a wildcard (though the protocol allows it,
4681 so stubs shouldn't make an active effort to forbid
4683 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4685 struct thread_info
*tp
;
4687 if (ptid_equal (ptid
, minus_one_ptid
))
4689 /* If we don't know about the target thread's tid, then
4690 we're resuming magic_null_ptid (see caller). */
4691 tp
= find_thread_ptid (magic_null_ptid
);
4694 tp
= find_thread_ptid (ptid
);
4695 gdb_assert (tp
!= NULL
);
4697 if (tp
->control
.may_range_step
)
4699 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4701 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4702 phex_nz (tp
->control
.step_range_start
,
4704 phex_nz (tp
->control
.step_range_end
,
4708 p
+= xsnprintf (p
, endp
- p
, ";s");
4711 p
+= xsnprintf (p
, endp
- p
, ";s");
4712 else if (siggnal
!= GDB_SIGNAL_0
)
4713 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4715 p
+= xsnprintf (p
, endp
- p
, ";c");
4717 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4721 /* All (-1) threads of process. */
4722 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4724 p
+= xsnprintf (p
, endp
- p
, ":");
4725 p
= write_ptid (p
, endp
, nptid
);
4727 else if (!ptid_equal (ptid
, minus_one_ptid
))
4729 p
+= xsnprintf (p
, endp
- p
, ":");
4730 p
= write_ptid (p
, endp
, ptid
);
4736 /* Append a vCont continue-with-signal action for threads that have a
4737 non-zero stop signal. */
4740 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4742 struct thread_info
*thread
;
4744 ALL_THREADS (thread
)
4745 if (ptid_match (thread
->ptid
, ptid
)
4746 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4747 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4748 && signal_pass_state (thread
->suspend
.stop_signal
))
4750 p
= append_resumption (p
, endp
, thread
->ptid
,
4751 0, thread
->suspend
.stop_signal
);
4752 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4758 /* Resume the remote inferior by using a "vCont" packet. The thread
4759 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4760 resumed thread should be single-stepped and/or signalled. If PTID
4761 equals minus_one_ptid, then all threads are resumed; the thread to
4762 be stepped and/or signalled is given in the global INFERIOR_PTID.
4763 This function returns non-zero iff it resumes the inferior.
4765 This function issues a strict subset of all possible vCont commands at the
4769 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4771 struct remote_state
*rs
= get_remote_state ();
4775 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4776 remote_vcont_probe (rs
);
4778 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4782 endp
= rs
->buf
+ get_remote_packet_size ();
4784 /* If we could generate a wider range of packets, we'd have to worry
4785 about overflowing BUF. Should there be a generic
4786 "multi-part-packet" packet? */
4788 p
+= xsnprintf (p
, endp
- p
, "vCont");
4790 if (ptid_equal (ptid
, magic_null_ptid
))
4792 /* MAGIC_NULL_PTID means that we don't have any active threads,
4793 so we don't have any TID numbers the inferior will
4794 understand. Make sure to only send forms that do not specify
4796 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4798 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4800 /* Resume all threads (of all processes, or of a single
4801 process), with preference for INFERIOR_PTID. This assumes
4802 inferior_ptid belongs to the set of all threads we are about
4804 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4806 /* Step inferior_ptid, with or without signal. */
4807 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4810 /* Also pass down any pending signaled resumption for other
4811 threads not the current. */
4812 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4814 /* And continue others without a signal. */
4815 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4819 /* Scheduler locking; resume only PTID. */
4820 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4823 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4828 /* In non-stop, the stub replies to vCont with "OK". The stop
4829 reply will be reported asynchronously by means of a `%Stop'
4831 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4832 if (strcmp (rs
->buf
, "OK") != 0)
4833 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4839 /* Tell the remote machine to resume. */
4842 remote_resume (struct target_ops
*ops
,
4843 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4845 struct remote_state
*rs
= get_remote_state ();
4848 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4849 (explained in remote-notif.c:handle_notification) so
4850 remote_notif_process is not called. We need find a place where
4851 it is safe to start a 'vNotif' sequence. It is good to do it
4852 before resuming inferior, because inferior was stopped and no RSP
4853 traffic at that moment. */
4855 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4857 rs
->last_sent_signal
= siggnal
;
4858 rs
->last_sent_step
= step
;
4860 /* The vCont packet doesn't need to specify threads via Hc. */
4861 /* No reverse support (yet) for vCont. */
4862 if (execution_direction
!= EXEC_REVERSE
)
4863 if (remote_vcont_resume (ptid
, step
, siggnal
))
4866 /* All other supported resume packets do use Hc, so set the continue
4868 if (ptid_equal (ptid
, minus_one_ptid
))
4869 set_continue_thread (any_thread_ptid
);
4871 set_continue_thread (ptid
);
4874 if (execution_direction
== EXEC_REVERSE
)
4876 /* We don't pass signals to the target in reverse exec mode. */
4877 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4878 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4882 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4883 error (_("Remote reverse-step not supported."));
4885 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4886 error (_("Remote reverse-continue not supported."));
4888 strcpy (buf
, step
? "bs" : "bc");
4890 else if (siggnal
!= GDB_SIGNAL_0
)
4892 buf
[0] = step
? 'S' : 'C';
4893 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4894 buf
[2] = tohex (((int) siggnal
) & 0xf);
4898 strcpy (buf
, step
? "s" : "c");
4903 /* We are about to start executing the inferior, let's register it
4904 with the event loop. NOTE: this is the one place where all the
4905 execution commands end up. We could alternatively do this in each
4906 of the execution commands in infcmd.c. */
4907 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4908 into infcmd.c in order to allow inferior function calls to work
4909 NOT asynchronously. */
4910 if (target_can_async_p ())
4911 target_async (inferior_event_handler
, 0);
4913 /* We've just told the target to resume. The remote server will
4914 wait for the inferior to stop, and then send a stop reply. In
4915 the mean time, we can't start another command/query ourselves
4916 because the stub wouldn't be ready to process it. This applies
4917 only to the base all-stop protocol, however. In non-stop (which
4918 only supports vCont), the stub replies with an "OK", and is
4919 immediate able to process further serial input. */
4921 rs
->waiting_for_stop_reply
= 1;
4925 /* Set up the signal handler for SIGINT, while the target is
4926 executing, ovewriting the 'regular' SIGINT signal handler. */
4928 async_initialize_sigint_signal_handler (void)
4930 signal (SIGINT
, async_handle_remote_sigint
);
4933 /* Signal handler for SIGINT, while the target is executing. */
4935 async_handle_remote_sigint (int sig
)
4937 signal (sig
, async_handle_remote_sigint_twice
);
4938 mark_async_signal_handler (async_sigint_remote_token
);
4941 /* Signal handler for SIGINT, installed after SIGINT has already been
4942 sent once. It will take effect the second time that the user sends
4945 async_handle_remote_sigint_twice (int sig
)
4947 signal (sig
, async_handle_remote_sigint
);
4948 mark_async_signal_handler (async_sigint_remote_twice_token
);
4951 /* Perform the real interruption of the target execution, in response
4954 async_remote_interrupt (gdb_client_data arg
)
4957 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4959 target_stop (inferior_ptid
);
4962 /* Perform interrupt, if the first attempt did not succeed. Just give
4963 up on the target alltogether. */
4965 async_remote_interrupt_twice (gdb_client_data arg
)
4968 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4973 /* Reinstall the usual SIGINT handlers, after the target has
4976 async_cleanup_sigint_signal_handler (void *dummy
)
4978 signal (SIGINT
, handle_sigint
);
4981 /* Send ^C to target to halt it. Target will respond, and send us a
4983 static void (*ofunc
) (int);
4985 /* The command line interface's stop routine. This function is installed
4986 as a signal handler for SIGINT. The first time a user requests a
4987 stop, we call remote_stop to send a break or ^C. If there is no
4988 response from the target (it didn't stop when the user requested it),
4989 we ask the user if he'd like to detach from the target. */
4991 sync_remote_interrupt (int signo
)
4993 /* If this doesn't work, try more severe steps. */
4994 signal (signo
, sync_remote_interrupt_twice
);
4996 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
4999 /* The user typed ^C twice. */
5002 sync_remote_interrupt_twice (int signo
)
5004 signal (signo
, ofunc
);
5005 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5006 signal (signo
, sync_remote_interrupt
);
5009 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5010 thread, all threads of a remote process, or all threads of all
5014 remote_stop_ns (ptid_t ptid
)
5016 struct remote_state
*rs
= get_remote_state ();
5018 char *endp
= rs
->buf
+ get_remote_packet_size ();
5020 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5021 remote_vcont_probe (rs
);
5023 if (!rs
->supports_vCont
.t
)
5024 error (_("Remote server does not support stopping threads"));
5026 if (ptid_equal (ptid
, minus_one_ptid
)
5027 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5028 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5033 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5035 if (ptid_is_pid (ptid
))
5036 /* All (-1) threads of process. */
5037 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5040 /* Small optimization: if we already have a stop reply for
5041 this thread, no use in telling the stub we want this
5043 if (peek_stop_reply (ptid
))
5049 write_ptid (p
, endp
, nptid
);
5052 /* In non-stop, we get an immediate OK reply. The stop reply will
5053 come in asynchronously by notification. */
5055 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5056 if (strcmp (rs
->buf
, "OK") != 0)
5057 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5060 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5061 remote target. It is undefined which thread of which process
5062 reports the stop. */
5065 remote_stop_as (ptid_t ptid
)
5067 struct remote_state
*rs
= get_remote_state ();
5069 rs
->ctrlc_pending_p
= 1;
5071 /* If the inferior is stopped already, but the core didn't know
5072 about it yet, just ignore the request. The cached wait status
5073 will be collected in remote_wait. */
5074 if (rs
->cached_wait_status
)
5077 /* Send interrupt_sequence to remote target. */
5078 send_interrupt_sequence ();
5081 /* This is the generic stop called via the target vector. When a target
5082 interrupt is requested, either by the command line or the GUI, we
5083 will eventually end up here. */
5086 remote_stop (ptid_t ptid
)
5089 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5092 remote_stop_ns (ptid
);
5094 remote_stop_as (ptid
);
5097 /* Ask the user what to do when an interrupt is received. */
5100 interrupt_query (void)
5102 target_terminal_ours ();
5104 if (target_can_async_p ())
5106 signal (SIGINT
, handle_sigint
);
5111 if (query (_("Interrupted while waiting for the program.\n\
5112 Give up (and stop debugging it)? ")))
5114 remote_unpush_target ();
5119 target_terminal_inferior ();
5122 /* Enable/disable target terminal ownership. Most targets can use
5123 terminal groups to control terminal ownership. Remote targets are
5124 different in that explicit transfer of ownership to/from GDB/target
5128 remote_terminal_inferior (struct target_ops
*self
)
5130 if (!target_async_permitted
)
5131 /* Nothing to do. */
5134 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5135 idempotent. The event-loop GDB talking to an asynchronous target
5136 with a synchronous command calls this function from both
5137 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5138 transfer the terminal to the target when it shouldn't this guard
5140 if (!remote_async_terminal_ours_p
)
5142 delete_file_handler (input_fd
);
5143 remote_async_terminal_ours_p
= 0;
5144 async_initialize_sigint_signal_handler ();
5145 /* NOTE: At this point we could also register our selves as the
5146 recipient of all input. Any characters typed could then be
5147 passed on down to the target. */
5151 remote_terminal_ours (void)
5153 if (!target_async_permitted
)
5154 /* Nothing to do. */
5157 /* See FIXME in remote_terminal_inferior. */
5158 if (remote_async_terminal_ours_p
)
5160 async_cleanup_sigint_signal_handler (NULL
);
5161 add_file_handler (input_fd
, stdin_event_handler
, 0);
5162 remote_async_terminal_ours_p
= 1;
5166 remote_console_output (char *msg
)
5170 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5173 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5177 fputs_unfiltered (tb
, gdb_stdtarg
);
5179 gdb_flush (gdb_stdtarg
);
5182 typedef struct cached_reg
5185 gdb_byte data
[MAX_REGISTER_SIZE
];
5188 DEF_VEC_O(cached_reg_t
);
5190 typedef struct stop_reply
5192 struct notif_event base
;
5194 /* The identifier of the thread about this event */
5197 /* The remote state this event is associated with. When the remote
5198 connection, represented by a remote_state object, is closed,
5199 all the associated stop_reply events should be released. */
5200 struct remote_state
*rs
;
5202 struct target_waitstatus ws
;
5204 /* Expedited registers. This makes remote debugging a bit more
5205 efficient for those targets that provide critical registers as
5206 part of their normal status mechanism (as another roundtrip to
5207 fetch them is avoided). */
5208 VEC(cached_reg_t
) *regcache
;
5210 int stopped_by_watchpoint_p
;
5211 CORE_ADDR watch_data_address
;
5216 DECLARE_QUEUE_P (stop_reply_p
);
5217 DEFINE_QUEUE_P (stop_reply_p
);
5218 /* The list of already fetched and acknowledged stop events. This
5219 queue is used for notification Stop, and other notifications
5220 don't need queue for their events, because the notification events
5221 of Stop can't be consumed immediately, so that events should be
5222 queued first, and be consumed by remote_wait_{ns,as} one per
5223 time. Other notifications can consume their events immediately,
5224 so queue is not needed for them. */
5225 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5228 stop_reply_xfree (struct stop_reply
*r
)
5230 notif_event_xfree ((struct notif_event
*) r
);
5234 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5235 struct notif_event
*event
)
5237 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5241 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5242 struct notif_event
*event
)
5244 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5247 putpkt ((char *) self
->ack_command
);
5249 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5250 /* We got an unknown stop reply. */
5251 error (_("Unknown stop reply"));
5253 push_stop_reply (stop_reply
);
5257 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5259 /* We can't get pending events in remote_notif_process for
5260 notification stop, and we have to do this in remote_wait_ns
5261 instead. If we fetch all queued events from stub, remote stub
5262 may exit and we have no chance to process them back in
5264 mark_async_event_handler (remote_async_inferior_event_token
);
5269 stop_reply_dtr (struct notif_event
*event
)
5271 struct stop_reply
*r
= (struct stop_reply
*) event
;
5273 VEC_free (cached_reg_t
, r
->regcache
);
5276 static struct notif_event
*
5277 remote_notif_stop_alloc_reply (void)
5279 struct notif_event
*r
5280 = (struct notif_event
*) XNEW (struct stop_reply
);
5282 r
->dtr
= stop_reply_dtr
;
5287 /* A client of notification Stop. */
5289 struct notif_client notif_client_stop
=
5293 remote_notif_stop_parse
,
5294 remote_notif_stop_ack
,
5295 remote_notif_stop_can_get_pending_events
,
5296 remote_notif_stop_alloc_reply
,
5300 /* A parameter to pass data in and out. */
5302 struct queue_iter_param
5305 struct stop_reply
*output
;
5308 /* Remove stop replies in the queue if its pid is equal to the given
5312 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5313 QUEUE_ITER (stop_reply_p
) *iter
,
5317 struct queue_iter_param
*param
= data
;
5318 struct inferior
*inf
= param
->input
;
5320 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5322 stop_reply_xfree (event
);
5323 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5329 /* Discard all pending stop replies of inferior INF. */
5332 discard_pending_stop_replies (struct inferior
*inf
)
5335 struct queue_iter_param param
;
5336 struct stop_reply
*reply
;
5337 struct remote_state
*rs
= get_remote_state ();
5338 struct remote_notif_state
*rns
= rs
->notif_state
;
5340 /* This function can be notified when an inferior exists. When the
5341 target is not remote, the notification state is NULL. */
5342 if (rs
->remote_desc
== NULL
)
5345 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5347 /* Discard the in-flight notification. */
5348 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5350 stop_reply_xfree (reply
);
5351 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5355 param
.output
= NULL
;
5356 /* Discard the stop replies we have already pulled with
5358 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5359 remove_stop_reply_for_inferior
, ¶m
);
5362 /* If its remote state is equal to the given remote state,
5363 remove EVENT from the stop reply queue. */
5366 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5367 QUEUE_ITER (stop_reply_p
) *iter
,
5371 struct queue_iter_param
*param
= data
;
5372 struct remote_state
*rs
= param
->input
;
5374 if (event
->rs
== rs
)
5376 stop_reply_xfree (event
);
5377 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5383 /* Discard the stop replies for RS in stop_reply_queue. */
5386 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5388 struct queue_iter_param param
;
5391 param
.output
= NULL
;
5392 /* Discard the stop replies we have already pulled with
5394 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5395 remove_stop_reply_of_remote_state
, ¶m
);
5398 /* A parameter to pass data in and out. */
5401 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5402 QUEUE_ITER (stop_reply_p
) *iter
,
5406 struct queue_iter_param
*param
= data
;
5407 ptid_t
*ptid
= param
->input
;
5409 if (ptid_match (event
->ptid
, *ptid
))
5411 param
->output
= event
;
5412 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5419 /* Remove the first reply in 'stop_reply_queue' which matches
5422 static struct stop_reply
*
5423 remote_notif_remove_queued_reply (ptid_t ptid
)
5425 struct queue_iter_param param
;
5427 param
.input
= &ptid
;
5428 param
.output
= NULL
;
5430 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5431 remote_notif_remove_once_on_match
, ¶m
);
5433 fprintf_unfiltered (gdb_stdlog
,
5434 "notif: discard queued event: 'Stop' in %s\n",
5435 target_pid_to_str (ptid
));
5437 return param
.output
;
5440 /* Look for a queued stop reply belonging to PTID. If one is found,
5441 remove it from the queue, and return it. Returns NULL if none is
5442 found. If there are still queued events left to process, tell the
5443 event loop to get back to target_wait soon. */
5445 static struct stop_reply
*
5446 queued_stop_reply (ptid_t ptid
)
5448 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5450 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5451 /* There's still at least an event left. */
5452 mark_async_event_handler (remote_async_inferior_event_token
);
5457 /* Push a fully parsed stop reply in the stop reply queue. Since we
5458 know that we now have at least one queued event left to pass to the
5459 core side, tell the event loop to get back to target_wait soon. */
5462 push_stop_reply (struct stop_reply
*new_event
)
5464 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5467 fprintf_unfiltered (gdb_stdlog
,
5468 "notif: push 'Stop' %s to queue %d\n",
5469 target_pid_to_str (new_event
->ptid
),
5470 QUEUE_length (stop_reply_p
,
5473 mark_async_event_handler (remote_async_inferior_event_token
);
5477 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5478 QUEUE_ITER (stop_reply_p
) *iter
,
5479 struct stop_reply
*event
,
5482 ptid_t
*ptid
= data
;
5484 return !(ptid_equal (*ptid
, event
->ptid
)
5485 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5488 /* Returns true if we have a stop reply for PTID. */
5491 peek_stop_reply (ptid_t ptid
)
5493 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5494 stop_reply_match_ptid_and_ws
, &ptid
);
5497 /* Parse the stop reply in BUF. Either the function succeeds, and the
5498 result is stored in EVENT, or throws an error. */
5501 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5503 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5507 event
->ptid
= null_ptid
;
5508 event
->rs
= get_remote_state ();
5509 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5510 event
->ws
.value
.integer
= 0;
5511 event
->stopped_by_watchpoint_p
= 0;
5512 event
->regcache
= NULL
;
5517 case 'T': /* Status with PC, SP, FP, ... */
5518 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5519 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5521 n... = register number
5522 r... = register contents
5525 p
= &buf
[3]; /* after Txx */
5533 /* If the packet contains a register number, save it in
5534 pnum and set p1 to point to the character following it.
5535 Otherwise p1 points to p. */
5537 /* If this packet is an awatch packet, don't parse the 'a'
5538 as a register number. */
5540 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5541 && strncmp (p
, "core", strlen ("core") != 0))
5543 /* Read the ``P'' register number. */
5544 pnum
= strtol (p
, &p_temp
, 16);
5550 if (p1
== p
) /* No register number present here. */
5552 p1
= strchr (p
, ':');
5554 error (_("Malformed packet(a) (missing colon): %s\n\
5557 if (strncmp (p
, "thread", p1
- p
) == 0)
5558 event
->ptid
= read_ptid (++p1
, &p
);
5559 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5560 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5561 || (strncmp (p
, "awatch", p1
- p
) == 0))
5563 event
->stopped_by_watchpoint_p
= 1;
5564 p
= unpack_varlen_hex (++p1
, &addr
);
5565 event
->watch_data_address
= (CORE_ADDR
) addr
;
5567 else if (strncmp (p
, "library", p1
- p
) == 0)
5571 while (*p_temp
&& *p_temp
!= ';')
5574 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5577 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5579 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5580 /* p1 will indicate "begin" or "end", but it makes
5581 no difference for now, so ignore it. */
5582 p_temp
= strchr (p1
+ 1, ';');
5586 else if (strncmp (p
, "core", p1
- p
) == 0)
5590 p
= unpack_varlen_hex (++p1
, &c
);
5595 /* Silently skip unknown optional info. */
5596 p_temp
= strchr (p1
+ 1, ';');
5603 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5604 cached_reg_t cached_reg
;
5609 error (_("Malformed packet(b) (missing colon): %s\n\
5615 error (_("Remote sent bad register number %s: %s\n\
5617 hex_string (pnum
), p
, buf
);
5619 cached_reg
.num
= reg
->regnum
;
5621 fieldsize
= hex2bin (p
, cached_reg
.data
,
5622 register_size (target_gdbarch (),
5625 if (fieldsize
< register_size (target_gdbarch (),
5627 warning (_("Remote reply is too short: %s"), buf
);
5629 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5633 error (_("Remote register badly formatted: %s\nhere: %s"),
5638 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5642 case 'S': /* Old style status, just signal only. */
5646 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5647 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5648 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5649 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5651 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5654 case 'W': /* Target exited. */
5661 /* GDB used to accept only 2 hex chars here. Stubs should
5662 only send more if they detect GDB supports multi-process
5664 p
= unpack_varlen_hex (&buf
[1], &value
);
5668 /* The remote process exited. */
5669 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5670 event
->ws
.value
.integer
= value
;
5674 /* The remote process exited with a signal. */
5675 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5676 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5677 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5679 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5682 /* If no process is specified, assume inferior_ptid. */
5683 pid
= ptid_get_pid (inferior_ptid
);
5692 else if (strncmp (p
,
5693 "process:", sizeof ("process:") - 1) == 0)
5697 p
+= sizeof ("process:") - 1;
5698 unpack_varlen_hex (p
, &upid
);
5702 error (_("unknown stop reply packet: %s"), buf
);
5705 error (_("unknown stop reply packet: %s"), buf
);
5706 event
->ptid
= pid_to_ptid (pid
);
5711 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5712 error (_("No process or thread specified in stop reply: %s"), buf
);
5715 /* When the stub wants to tell GDB about a new notification reply, it
5716 sends a notification (%Stop, for example). Those can come it at
5717 any time, hence, we have to make sure that any pending
5718 putpkt/getpkt sequence we're making is finished, before querying
5719 the stub for more events with the corresponding ack command
5720 (vStopped, for example). E.g., if we started a vStopped sequence
5721 immediately upon receiving the notification, something like this
5729 1.6) <-- (registers reply to step #1.3)
5731 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5734 To solve this, whenever we parse a %Stop notification successfully,
5735 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5736 doing whatever we were doing:
5742 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5743 2.5) <-- (registers reply to step #2.3)
5745 Eventualy after step #2.5, we return to the event loop, which
5746 notices there's an event on the
5747 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5748 associated callback --- the function below. At this point, we're
5749 always safe to start a vStopped sequence. :
5752 2.7) <-- T05 thread:2
5758 remote_notif_get_pending_events (struct notif_client
*nc
)
5760 struct remote_state
*rs
= get_remote_state ();
5762 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5765 fprintf_unfiltered (gdb_stdlog
,
5766 "notif: process: '%s' ack pending event\n",
5770 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5771 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5775 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5776 if (strcmp (rs
->buf
, "OK") == 0)
5779 remote_notif_ack (nc
, rs
->buf
);
5785 fprintf_unfiltered (gdb_stdlog
,
5786 "notif: process: '%s' no pending reply\n",
5791 /* Called when it is decided that STOP_REPLY holds the info of the
5792 event that is to be returned to the core. This function always
5793 destroys STOP_REPLY. */
5796 process_stop_reply (struct stop_reply
*stop_reply
,
5797 struct target_waitstatus
*status
)
5801 *status
= stop_reply
->ws
;
5802 ptid
= stop_reply
->ptid
;
5804 /* If no thread/process was reported by the stub, assume the current
5806 if (ptid_equal (ptid
, null_ptid
))
5807 ptid
= inferior_ptid
;
5809 if (status
->kind
!= TARGET_WAITKIND_EXITED
5810 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5812 struct remote_state
*rs
= get_remote_state ();
5814 /* Expedited registers. */
5815 if (stop_reply
->regcache
)
5817 struct regcache
*regcache
5818 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5823 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5825 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5826 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5829 rs
->remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5830 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5832 remote_notice_new_inferior (ptid
, 0);
5833 demand_private_info (ptid
)->core
= stop_reply
->core
;
5836 stop_reply_xfree (stop_reply
);
5840 /* The non-stop mode version of target_wait. */
5843 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5845 struct remote_state
*rs
= get_remote_state ();
5846 struct stop_reply
*stop_reply
;
5850 /* If in non-stop mode, get out of getpkt even if a
5851 notification is received. */
5853 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5854 0 /* forever */, &is_notif
);
5857 if (ret
!= -1 && !is_notif
)
5860 case 'E': /* Error of some sort. */
5861 /* We're out of sync with the target now. Did it continue
5862 or not? We can't tell which thread it was in non-stop,
5863 so just ignore this. */
5864 warning (_("Remote failure reply: %s"), rs
->buf
);
5866 case 'O': /* Console output. */
5867 remote_console_output (rs
->buf
+ 1);
5870 warning (_("Invalid remote reply: %s"), rs
->buf
);
5874 /* Acknowledge a pending stop reply that may have arrived in the
5876 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5877 remote_notif_get_pending_events (¬if_client_stop
);
5879 /* If indeed we noticed a stop reply, we're done. */
5880 stop_reply
= queued_stop_reply (ptid
);
5881 if (stop_reply
!= NULL
)
5882 return process_stop_reply (stop_reply
, status
);
5884 /* Still no event. If we're just polling for an event, then
5885 return to the event loop. */
5886 if (options
& TARGET_WNOHANG
)
5888 status
->kind
= TARGET_WAITKIND_IGNORE
;
5889 return minus_one_ptid
;
5892 /* Otherwise do a blocking wait. */
5893 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5894 1 /* forever */, &is_notif
);
5898 /* Wait until the remote machine stops, then return, storing status in
5899 STATUS just as `wait' would. */
5902 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5904 struct remote_state
*rs
= get_remote_state ();
5905 ptid_t event_ptid
= null_ptid
;
5907 struct stop_reply
*stop_reply
;
5911 status
->kind
= TARGET_WAITKIND_IGNORE
;
5912 status
->value
.integer
= 0;
5914 stop_reply
= queued_stop_reply (ptid
);
5915 if (stop_reply
!= NULL
)
5916 return process_stop_reply (stop_reply
, status
);
5918 if (rs
->cached_wait_status
)
5919 /* Use the cached wait status, but only once. */
5920 rs
->cached_wait_status
= 0;
5926 if (!target_is_async_p ())
5928 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5929 /* If the user hit C-c before this packet, or between packets,
5930 pretend that it was hit right here. */
5931 if (check_quit_flag ())
5934 sync_remote_interrupt (SIGINT
);
5938 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5939 _never_ wait for ever -> test on target_is_async_p().
5940 However, before we do that we need to ensure that the caller
5941 knows how to take the target into/out of async mode. */
5942 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5943 wait_forever_enabled_p
, &is_notif
);
5945 if (!target_is_async_p ())
5946 signal (SIGINT
, ofunc
);
5948 /* GDB gets a notification. Return to core as this event is
5950 if (ret
!= -1 && is_notif
)
5951 return minus_one_ptid
;
5956 rs
->remote_stopped_by_watchpoint_p
= 0;
5958 /* We got something. */
5959 rs
->waiting_for_stop_reply
= 0;
5961 /* Assume that the target has acknowledged Ctrl-C unless we receive
5962 an 'F' or 'O' packet. */
5963 if (buf
[0] != 'F' && buf
[0] != 'O')
5964 rs
->ctrlc_pending_p
= 0;
5968 case 'E': /* Error of some sort. */
5969 /* We're out of sync with the target now. Did it continue or
5970 not? Not is more likely, so report a stop. */
5971 warning (_("Remote failure reply: %s"), buf
);
5972 status
->kind
= TARGET_WAITKIND_STOPPED
;
5973 status
->value
.sig
= GDB_SIGNAL_0
;
5975 case 'F': /* File-I/O request. */
5976 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5977 rs
->ctrlc_pending_p
= 0;
5979 case 'T': case 'S': case 'X': case 'W':
5981 struct stop_reply
*stop_reply
5982 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5985 event_ptid
= process_stop_reply (stop_reply
, status
);
5988 case 'O': /* Console output. */
5989 remote_console_output (buf
+ 1);
5991 /* The target didn't really stop; keep waiting. */
5992 rs
->waiting_for_stop_reply
= 1;
5996 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
5998 /* Zero length reply means that we tried 'S' or 'C' and the
5999 remote system doesn't support it. */
6000 target_terminal_ours_for_output ();
6002 ("Can't send signals to this remote system. %s not sent.\n",
6003 gdb_signal_to_name (rs
->last_sent_signal
));
6004 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6005 target_terminal_inferior ();
6007 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6008 putpkt ((char *) buf
);
6010 /* We just told the target to resume, so a stop reply is in
6012 rs
->waiting_for_stop_reply
= 1;
6015 /* else fallthrough */
6017 warning (_("Invalid remote reply: %s"), buf
);
6019 rs
->waiting_for_stop_reply
= 1;
6023 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6025 /* Nothing interesting happened. If we're doing a non-blocking
6026 poll, we're done. Otherwise, go back to waiting. */
6027 if (options
& TARGET_WNOHANG
)
6028 return minus_one_ptid
;
6032 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6033 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6035 if (!ptid_equal (event_ptid
, null_ptid
))
6036 record_currthread (rs
, event_ptid
);
6038 event_ptid
= inferior_ptid
;
6041 /* A process exit. Invalidate our notion of current thread. */
6042 record_currthread (rs
, minus_one_ptid
);
6047 /* Wait until the remote machine stops, then return, storing status in
6048 STATUS just as `wait' would. */
6051 remote_wait (struct target_ops
*ops
,
6052 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6057 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6059 event_ptid
= remote_wait_as (ptid
, status
, options
);
6061 if (target_can_async_p ())
6063 /* If there are are events left in the queue tell the event loop
6065 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6066 mark_async_event_handler (remote_async_inferior_event_token
);
6072 /* Fetch a single register using a 'p' packet. */
6075 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6077 struct remote_state
*rs
= get_remote_state ();
6079 char regp
[MAX_REGISTER_SIZE
];
6082 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6085 if (reg
->pnum
== -1)
6090 p
+= hexnumstr (p
, reg
->pnum
);
6093 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6097 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6101 case PACKET_UNKNOWN
:
6104 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6105 gdbarch_register_name (get_regcache_arch (regcache
),
6110 /* If this register is unfetchable, tell the regcache. */
6113 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6117 /* Otherwise, parse and supply the value. */
6123 error (_("fetch_register_using_p: early buf termination"));
6125 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6128 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6132 /* Fetch the registers included in the target's 'g' packet. */
6135 send_g_packet (void)
6137 struct remote_state
*rs
= get_remote_state ();
6140 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6141 remote_send (&rs
->buf
, &rs
->buf_size
);
6143 /* We can get out of synch in various cases. If the first character
6144 in the buffer is not a hex character, assume that has happened
6145 and try to fetch another packet to read. */
6146 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6147 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6148 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6149 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6152 fprintf_unfiltered (gdb_stdlog
,
6153 "Bad register packet; fetching a new packet\n");
6154 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6157 buf_len
= strlen (rs
->buf
);
6159 /* Sanity check the received packet. */
6160 if (buf_len
% 2 != 0)
6161 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6167 process_g_packet (struct regcache
*regcache
)
6169 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6170 struct remote_state
*rs
= get_remote_state ();
6171 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6176 buf_len
= strlen (rs
->buf
);
6178 /* Further sanity checks, with knowledge of the architecture. */
6179 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6180 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6182 /* Save the size of the packet sent to us by the target. It is used
6183 as a heuristic when determining the max size of packets that the
6184 target can safely receive. */
6185 if (rsa
->actual_register_packet_size
== 0)
6186 rsa
->actual_register_packet_size
= buf_len
;
6188 /* If this is smaller than we guessed the 'g' packet would be,
6189 update our records. A 'g' reply that doesn't include a register's
6190 value implies either that the register is not available, or that
6191 the 'p' packet must be used. */
6192 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6194 rsa
->sizeof_g_packet
= buf_len
/ 2;
6196 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6198 if (rsa
->regs
[i
].pnum
== -1)
6201 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6202 rsa
->regs
[i
].in_g_packet
= 0;
6204 rsa
->regs
[i
].in_g_packet
= 1;
6208 regs
= alloca (rsa
->sizeof_g_packet
);
6210 /* Unimplemented registers read as all bits zero. */
6211 memset (regs
, 0, rsa
->sizeof_g_packet
);
6213 /* Reply describes registers byte by byte, each byte encoded as two
6214 hex characters. Suck them all up, then supply them to the
6215 register cacheing/storage mechanism. */
6218 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6220 if (p
[0] == 0 || p
[1] == 0)
6221 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6222 internal_error (__FILE__
, __LINE__
,
6223 _("unexpected end of 'g' packet reply"));
6225 if (p
[0] == 'x' && p
[1] == 'x')
6226 regs
[i
] = 0; /* 'x' */
6228 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6232 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6234 struct packet_reg
*r
= &rsa
->regs
[i
];
6238 if (r
->offset
* 2 >= strlen (rs
->buf
))
6239 /* This shouldn't happen - we adjusted in_g_packet above. */
6240 internal_error (__FILE__
, __LINE__
,
6241 _("unexpected end of 'g' packet reply"));
6242 else if (rs
->buf
[r
->offset
* 2] == 'x')
6244 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6245 /* The register isn't available, mark it as such (at
6246 the same time setting the value to zero). */
6247 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6250 regcache_raw_supply (regcache
, r
->regnum
,
6257 fetch_registers_using_g (struct regcache
*regcache
)
6260 process_g_packet (regcache
);
6263 /* Make the remote selected traceframe match GDB's selected
6267 set_remote_traceframe (void)
6270 struct remote_state
*rs
= get_remote_state ();
6272 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6275 /* Avoid recursion, remote_trace_find calls us again. */
6276 rs
->remote_traceframe_number
= get_traceframe_number ();
6278 newnum
= target_trace_find (tfind_number
,
6279 get_traceframe_number (), 0, 0, NULL
);
6281 /* Should not happen. If it does, all bets are off. */
6282 if (newnum
!= get_traceframe_number ())
6283 warning (_("could not set remote traceframe"));
6287 remote_fetch_registers (struct target_ops
*ops
,
6288 struct regcache
*regcache
, int regnum
)
6290 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6293 set_remote_traceframe ();
6294 set_general_thread (inferior_ptid
);
6298 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6300 gdb_assert (reg
!= NULL
);
6302 /* If this register might be in the 'g' packet, try that first -
6303 we are likely to read more than one register. If this is the
6304 first 'g' packet, we might be overly optimistic about its
6305 contents, so fall back to 'p'. */
6306 if (reg
->in_g_packet
)
6308 fetch_registers_using_g (regcache
);
6309 if (reg
->in_g_packet
)
6313 if (fetch_register_using_p (regcache
, reg
))
6316 /* This register is not available. */
6317 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6322 fetch_registers_using_g (regcache
);
6324 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6325 if (!rsa
->regs
[i
].in_g_packet
)
6326 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6328 /* This register is not available. */
6329 regcache_raw_supply (regcache
, i
, NULL
);
6333 /* Prepare to store registers. Since we may send them all (using a
6334 'G' request), we have to read out the ones we don't want to change
6338 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6340 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6342 gdb_byte buf
[MAX_REGISTER_SIZE
];
6344 /* Make sure the entire registers array is valid. */
6345 switch (remote_protocol_packets
[PACKET_P
].support
)
6347 case PACKET_DISABLE
:
6348 case PACKET_SUPPORT_UNKNOWN
:
6349 /* Make sure all the necessary registers are cached. */
6350 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6351 if (rsa
->regs
[i
].in_g_packet
)
6352 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6359 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6360 packet was not recognized. */
6363 store_register_using_P (const struct regcache
*regcache
,
6364 struct packet_reg
*reg
)
6366 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6367 struct remote_state
*rs
= get_remote_state ();
6368 /* Try storing a single register. */
6369 char *buf
= rs
->buf
;
6370 gdb_byte regp
[MAX_REGISTER_SIZE
];
6373 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6376 if (reg
->pnum
== -1)
6379 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6380 p
= buf
+ strlen (buf
);
6381 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6382 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6384 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6386 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6391 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6392 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6393 case PACKET_UNKNOWN
:
6396 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6400 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6401 contents of the register cache buffer. FIXME: ignores errors. */
6404 store_registers_using_G (const struct regcache
*regcache
)
6406 struct remote_state
*rs
= get_remote_state ();
6407 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6411 /* Extract all the registers in the regcache copying them into a
6416 regs
= alloca (rsa
->sizeof_g_packet
);
6417 memset (regs
, 0, rsa
->sizeof_g_packet
);
6418 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6420 struct packet_reg
*r
= &rsa
->regs
[i
];
6423 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6427 /* Command describes registers byte by byte,
6428 each byte encoded as two hex characters. */
6431 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6433 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6435 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6436 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6437 error (_("Could not write registers; remote failure reply '%s'"),
6441 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6442 of the register cache buffer. FIXME: ignores errors. */
6445 remote_store_registers (struct target_ops
*ops
,
6446 struct regcache
*regcache
, int regnum
)
6448 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6451 set_remote_traceframe ();
6452 set_general_thread (inferior_ptid
);
6456 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6458 gdb_assert (reg
!= NULL
);
6460 /* Always prefer to store registers using the 'P' packet if
6461 possible; we often change only a small number of registers.
6462 Sometimes we change a larger number; we'd need help from a
6463 higher layer to know to use 'G'. */
6464 if (store_register_using_P (regcache
, reg
))
6467 /* For now, don't complain if we have no way to write the
6468 register. GDB loses track of unavailable registers too
6469 easily. Some day, this may be an error. We don't have
6470 any way to read the register, either... */
6471 if (!reg
->in_g_packet
)
6474 store_registers_using_G (regcache
);
6478 store_registers_using_G (regcache
);
6480 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6481 if (!rsa
->regs
[i
].in_g_packet
)
6482 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6483 /* See above for why we do not issue an error here. */
6488 /* Return the number of hex digits in num. */
6491 hexnumlen (ULONGEST num
)
6495 for (i
= 0; num
!= 0; i
++)
6501 /* Set BUF to the minimum number of hex digits representing NUM. */
6504 hexnumstr (char *buf
, ULONGEST num
)
6506 int len
= hexnumlen (num
);
6508 return hexnumnstr (buf
, num
, len
);
6512 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6515 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6521 for (i
= width
- 1; i
>= 0; i
--)
6523 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6530 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6533 remote_address_masked (CORE_ADDR addr
)
6535 unsigned int address_size
= remote_address_size
;
6537 /* If "remoteaddresssize" was not set, default to target address size. */
6539 address_size
= gdbarch_addr_bit (target_gdbarch ());
6541 if (address_size
> 0
6542 && address_size
< (sizeof (ULONGEST
) * 8))
6544 /* Only create a mask when that mask can safely be constructed
6545 in a ULONGEST variable. */
6548 mask
= (mask
<< address_size
) - 1;
6554 /* Determine whether the remote target supports binary downloading.
6555 This is accomplished by sending a no-op memory write of zero length
6556 to the target at the specified address. It does not suffice to send
6557 the whole packet, since many stubs strip the eighth bit and
6558 subsequently compute a wrong checksum, which causes real havoc with
6561 NOTE: This can still lose if the serial line is not eight-bit
6562 clean. In cases like this, the user should clear "remote
6566 check_binary_download (CORE_ADDR addr
)
6568 struct remote_state
*rs
= get_remote_state ();
6570 switch (remote_protocol_packets
[PACKET_X
].support
)
6572 case PACKET_DISABLE
:
6576 case PACKET_SUPPORT_UNKNOWN
:
6582 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6584 p
+= hexnumstr (p
, (ULONGEST
) 0);
6588 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6589 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6591 if (rs
->buf
[0] == '\0')
6594 fprintf_unfiltered (gdb_stdlog
,
6595 "binary downloading NOT "
6596 "supported by target\n");
6597 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6602 fprintf_unfiltered (gdb_stdlog
,
6603 "binary downloading supported by target\n");
6604 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6611 /* Write memory data directly to the remote machine.
6612 This does not inform the data cache; the data cache uses this.
6613 HEADER is the starting part of the packet.
6614 MEMADDR is the address in the remote memory space.
6615 MYADDR is the address of the buffer in our space.
6616 LEN is the number of bytes.
6617 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6618 should send data as binary ('X'), or hex-encoded ('M').
6620 The function creates packet of the form
6621 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6623 where encoding of <DATA> is termined by PACKET_FORMAT.
6625 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6628 Return the transferred status, error or OK (an
6629 'enum target_xfer_status' value). Save the number of bytes
6630 transferred in *XFERED_LEN. Only transfer a single packet. */
6632 static enum target_xfer_status
6633 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6634 const gdb_byte
*myaddr
, ULONGEST len
,
6635 ULONGEST
*xfered_len
, char packet_format
,
6638 struct remote_state
*rs
= get_remote_state ();
6648 if (packet_format
!= 'X' && packet_format
!= 'M')
6649 internal_error (__FILE__
, __LINE__
,
6650 _("remote_write_bytes_aux: bad packet format"));
6653 return TARGET_XFER_EOF
;
6655 payload_size
= get_memory_write_packet_size ();
6657 /* The packet buffer will be large enough for the payload;
6658 get_memory_packet_size ensures this. */
6661 /* Compute the size of the actual payload by subtracting out the
6662 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6664 payload_size
-= strlen ("$,:#NN");
6666 /* The comma won't be used. */
6668 header_length
= strlen (header
);
6669 payload_size
-= header_length
;
6670 payload_size
-= hexnumlen (memaddr
);
6672 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6674 strcat (rs
->buf
, header
);
6675 p
= rs
->buf
+ strlen (header
);
6677 /* Compute a best guess of the number of bytes actually transfered. */
6678 if (packet_format
== 'X')
6680 /* Best guess at number of bytes that will fit. */
6681 todo
= min (len
, payload_size
);
6683 payload_size
-= hexnumlen (todo
);
6684 todo
= min (todo
, payload_size
);
6688 /* Num bytes that will fit. */
6689 todo
= min (len
, payload_size
/ 2);
6691 payload_size
-= hexnumlen (todo
);
6692 todo
= min (todo
, payload_size
/ 2);
6696 internal_error (__FILE__
, __LINE__
,
6697 _("minimum packet size too small to write data"));
6699 /* If we already need another packet, then try to align the end
6700 of this packet to a useful boundary. */
6701 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6702 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6704 /* Append "<memaddr>". */
6705 memaddr
= remote_address_masked (memaddr
);
6706 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6713 /* Append <len>. Retain the location/size of <len>. It may need to
6714 be adjusted once the packet body has been created. */
6716 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6724 /* Append the packet body. */
6725 if (packet_format
== 'X')
6727 /* Binary mode. Send target system values byte by byte, in
6728 increasing byte addresses. Only escape certain critical
6730 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6731 &nr_bytes
, payload_size
);
6733 /* If not all TODO bytes fit, then we'll need another packet. Make
6734 a second try to keep the end of the packet aligned. Don't do
6735 this if the packet is tiny. */
6736 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6740 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6742 if (new_nr_bytes
!= nr_bytes
)
6743 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6744 (gdb_byte
*) p
, &nr_bytes
,
6748 p
+= payload_length
;
6749 if (use_length
&& nr_bytes
< todo
)
6751 /* Escape chars have filled up the buffer prematurely,
6752 and we have actually sent fewer bytes than planned.
6753 Fix-up the length field of the packet. Use the same
6754 number of characters as before. */
6755 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6756 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6761 /* Normal mode: Send target system values byte by byte, in
6762 increasing byte addresses. Each byte is encoded as a two hex
6764 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6768 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6769 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6771 if (rs
->buf
[0] == 'E')
6772 return TARGET_XFER_E_IO
;
6774 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6775 fewer bytes than we'd planned. */
6776 *xfered_len
= (ULONGEST
) nr_bytes
;
6777 return TARGET_XFER_OK
;
6780 /* Write memory data directly to the remote machine.
6781 This does not inform the data cache; the data cache uses this.
6782 MEMADDR is the address in the remote memory space.
6783 MYADDR is the address of the buffer in our space.
6784 LEN is the number of bytes.
6786 Return the transferred status, error or OK (an
6787 'enum target_xfer_status' value). Save the number of bytes
6788 transferred in *XFERED_LEN. Only transfer a single packet. */
6790 static enum target_xfer_status
6791 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6792 ULONGEST
*xfered_len
)
6794 char *packet_format
= 0;
6796 /* Check whether the target supports binary download. */
6797 check_binary_download (memaddr
);
6799 switch (remote_protocol_packets
[PACKET_X
].support
)
6802 packet_format
= "X";
6804 case PACKET_DISABLE
:
6805 packet_format
= "M";
6807 case PACKET_SUPPORT_UNKNOWN
:
6808 internal_error (__FILE__
, __LINE__
,
6809 _("remote_write_bytes: bad internal state"));
6811 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6814 return remote_write_bytes_aux (packet_format
,
6815 memaddr
, myaddr
, len
, xfered_len
,
6816 packet_format
[0], 1);
6819 /* Read memory data directly from the remote machine.
6820 This does not use the data cache; the data cache uses this.
6821 MEMADDR is the address in the remote memory space.
6822 MYADDR is the address of the buffer in our space.
6823 LEN is the number of bytes.
6825 Return the transferred status, error or OK (an
6826 'enum target_xfer_status' value). Save the number of bytes
6827 transferred in *XFERED_LEN. */
6829 static enum target_xfer_status
6830 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6831 ULONGEST
*xfered_len
)
6833 struct remote_state
*rs
= get_remote_state ();
6834 int max_buf_size
; /* Max size of packet output buffer. */
6842 max_buf_size
= get_memory_read_packet_size ();
6843 /* The packet buffer will be large enough for the payload;
6844 get_memory_packet_size ensures this. */
6846 /* Number if bytes that will fit. */
6847 todo
= min (len
, max_buf_size
/ 2);
6849 /* Construct "m"<memaddr>","<len>". */
6850 memaddr
= remote_address_masked (memaddr
);
6853 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6855 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6859 if (rs
->buf
[0] == 'E'
6860 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6861 && rs
->buf
[3] == '\0')
6862 return TARGET_XFER_E_IO
;
6863 /* Reply describes memory byte by byte, each byte encoded as two hex
6866 i
= hex2bin (p
, myaddr
, todo
);
6867 /* Return what we have. Let higher layers handle partial reads. */
6868 *xfered_len
= (ULONGEST
) i
;
6869 return TARGET_XFER_OK
;
6874 /* Sends a packet with content determined by the printf format string
6875 FORMAT and the remaining arguments, then gets the reply. Returns
6876 whether the packet was a success, a failure, or unknown. */
6878 static enum packet_result
6879 remote_send_printf (const char *format
, ...)
6881 struct remote_state
*rs
= get_remote_state ();
6882 int max_size
= get_remote_packet_size ();
6885 va_start (ap
, format
);
6888 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6889 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6891 if (putpkt (rs
->buf
) < 0)
6892 error (_("Communication problem with target."));
6895 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6897 return packet_check_result (rs
->buf
);
6901 restore_remote_timeout (void *p
)
6903 int value
= *(int *)p
;
6905 remote_timeout
= value
;
6908 /* Flash writing can take quite some time. We'll set
6909 effectively infinite timeout for flash operations.
6910 In future, we'll need to decide on a better approach. */
6911 static const int remote_flash_timeout
= 1000;
6914 remote_flash_erase (struct target_ops
*ops
,
6915 ULONGEST address
, LONGEST length
)
6917 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6918 int saved_remote_timeout
= remote_timeout
;
6919 enum packet_result ret
;
6920 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6921 &saved_remote_timeout
);
6923 remote_timeout
= remote_flash_timeout
;
6925 ret
= remote_send_printf ("vFlashErase:%s,%s",
6926 phex (address
, addr_size
),
6930 case PACKET_UNKNOWN
:
6931 error (_("Remote target does not support flash erase"));
6933 error (_("Error erasing flash with vFlashErase packet"));
6938 do_cleanups (back_to
);
6941 static enum target_xfer_status
6942 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
6943 ULONGEST length
, ULONGEST
*xfered_len
,
6944 const gdb_byte
*data
)
6946 int saved_remote_timeout
= remote_timeout
;
6947 enum target_xfer_status ret
;
6948 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6949 &saved_remote_timeout
);
6951 remote_timeout
= remote_flash_timeout
;
6952 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
6954 do_cleanups (back_to
);
6960 remote_flash_done (struct target_ops
*ops
)
6962 int saved_remote_timeout
= remote_timeout
;
6964 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6965 &saved_remote_timeout
);
6967 remote_timeout
= remote_flash_timeout
;
6968 ret
= remote_send_printf ("vFlashDone");
6969 do_cleanups (back_to
);
6973 case PACKET_UNKNOWN
:
6974 error (_("Remote target does not support vFlashDone"));
6976 error (_("Error finishing flash operation"));
6983 remote_files_info (struct target_ops
*ignore
)
6985 puts_filtered ("Debugging a target over a serial line.\n");
6988 /* Stuff for dealing with the packets which are part of this protocol.
6989 See comment at top of file for details. */
6991 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
6992 error to higher layers. Called when a serial error is detected.
6993 The exception message is STRING, followed by a colon and a blank,
6994 the system error message for errno at function entry and final dot
6995 for output compatibility with throw_perror_with_name. */
6998 unpush_and_perror (const char *string
)
7000 int saved_errno
= errno
;
7002 remote_unpush_target ();
7003 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7004 safe_strerror (saved_errno
));
7007 /* Read a single character from the remote end. */
7010 readchar (int timeout
)
7013 struct remote_state
*rs
= get_remote_state ();
7015 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7020 switch ((enum serial_rc
) ch
)
7023 remote_unpush_target ();
7024 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7027 unpush_and_perror (_("Remote communication error. "
7028 "Target disconnected."));
7030 case SERIAL_TIMEOUT
:
7036 /* Wrapper for serial_write that closes the target and throws if
7040 remote_serial_write (const char *str
, int len
)
7042 struct remote_state
*rs
= get_remote_state ();
7044 if (serial_write (rs
->remote_desc
, str
, len
))
7046 unpush_and_perror (_("Remote communication error. "
7047 "Target disconnected."));
7051 /* Send the command in *BUF to the remote machine, and read the reply
7052 into *BUF. Report an error if we get an error reply. Resize
7053 *BUF using xrealloc if necessary to hold the result, and update
7057 remote_send (char **buf
,
7061 getpkt (buf
, sizeof_buf
, 0);
7063 if ((*buf
)[0] == 'E')
7064 error (_("Remote failure reply: %s"), *buf
);
7067 /* Return a pointer to an xmalloc'ed string representing an escaped
7068 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7069 etc. The caller is responsible for releasing the returned
7073 escape_buffer (const char *buf
, int n
)
7075 struct cleanup
*old_chain
;
7076 struct ui_file
*stb
;
7079 stb
= mem_fileopen ();
7080 old_chain
= make_cleanup_ui_file_delete (stb
);
7082 fputstrn_unfiltered (buf
, n
, 0, stb
);
7083 str
= ui_file_xstrdup (stb
, NULL
);
7084 do_cleanups (old_chain
);
7088 /* Display a null-terminated packet on stdout, for debugging, using C
7092 print_packet (char *buf
)
7094 puts_filtered ("\"");
7095 fputstr_filtered (buf
, '"', gdb_stdout
);
7096 puts_filtered ("\"");
7102 return putpkt_binary (buf
, strlen (buf
));
7105 /* Send a packet to the remote machine, with error checking. The data
7106 of the packet is in BUF. The string in BUF can be at most
7107 get_remote_packet_size () - 5 to account for the $, # and checksum,
7108 and for a possible /0 if we are debugging (remote_debug) and want
7109 to print the sent packet as a string. */
7112 putpkt_binary (char *buf
, int cnt
)
7114 struct remote_state
*rs
= get_remote_state ();
7116 unsigned char csum
= 0;
7117 char *buf2
= alloca (cnt
+ 6);
7124 /* Catch cases like trying to read memory or listing threads while
7125 we're waiting for a stop reply. The remote server wouldn't be
7126 ready to handle this request, so we'd hang and timeout. We don't
7127 have to worry about this in synchronous mode, because in that
7128 case it's not possible to issue a command while the target is
7129 running. This is not a problem in non-stop mode, because in that
7130 case, the stub is always ready to process serial input. */
7131 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7132 error (_("Cannot execute this command while the target is running."));
7134 /* We're sending out a new packet. Make sure we don't look at a
7135 stale cached response. */
7136 rs
->cached_wait_status
= 0;
7138 /* Copy the packet into buffer BUF2, encapsulating it
7139 and giving it a checksum. */
7144 for (i
= 0; i
< cnt
; i
++)
7150 *p
++ = tohex ((csum
>> 4) & 0xf);
7151 *p
++ = tohex (csum
& 0xf);
7153 /* Send it over and over until we get a positive ack. */
7157 int started_error_output
= 0;
7161 struct cleanup
*old_chain
;
7165 str
= escape_buffer (buf2
, p
- buf2
);
7166 old_chain
= make_cleanup (xfree
, str
);
7167 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7168 gdb_flush (gdb_stdlog
);
7169 do_cleanups (old_chain
);
7171 remote_serial_write (buf2
, p
- buf2
);
7173 /* If this is a no acks version of the remote protocol, send the
7174 packet and move on. */
7178 /* Read until either a timeout occurs (-2) or '+' is read.
7179 Handle any notification that arrives in the mean time. */
7182 ch
= readchar (remote_timeout
);
7190 case SERIAL_TIMEOUT
:
7193 if (started_error_output
)
7195 putchar_unfiltered ('\n');
7196 started_error_output
= 0;
7205 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7209 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7211 case SERIAL_TIMEOUT
:
7215 break; /* Retransmit buffer. */
7219 fprintf_unfiltered (gdb_stdlog
,
7220 "Packet instead of Ack, ignoring it\n");
7221 /* It's probably an old response sent because an ACK
7222 was lost. Gobble up the packet and ack it so it
7223 doesn't get retransmitted when we resend this
7226 remote_serial_write ("+", 1);
7227 continue; /* Now, go look for +. */
7234 /* If we got a notification, handle it, and go back to looking
7236 /* We've found the start of a notification. Now
7237 collect the data. */
7238 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7243 struct cleanup
*old_chain
;
7246 str
= escape_buffer (rs
->buf
, val
);
7247 old_chain
= make_cleanup (xfree
, str
);
7248 fprintf_unfiltered (gdb_stdlog
,
7249 " Notification received: %s\n",
7251 do_cleanups (old_chain
);
7253 handle_notification (rs
->notif_state
, rs
->buf
);
7254 /* We're in sync now, rewait for the ack. */
7261 if (!started_error_output
)
7263 started_error_output
= 1;
7264 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7266 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7267 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7276 if (!started_error_output
)
7278 started_error_output
= 1;
7279 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7281 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7285 break; /* Here to retransmit. */
7289 /* This is wrong. If doing a long backtrace, the user should be
7290 able to get out next time we call QUIT, without anything as
7291 violent as interrupt_query. If we want to provide a way out of
7292 here without getting to the next QUIT, it should be based on
7293 hitting ^C twice as in remote_wait. */
7304 /* Come here after finding the start of a frame when we expected an
7305 ack. Do our best to discard the rest of this packet. */
7314 c
= readchar (remote_timeout
);
7317 case SERIAL_TIMEOUT
:
7318 /* Nothing we can do. */
7321 /* Discard the two bytes of checksum and stop. */
7322 c
= readchar (remote_timeout
);
7324 c
= readchar (remote_timeout
);
7327 case '*': /* Run length encoding. */
7328 /* Discard the repeat count. */
7329 c
= readchar (remote_timeout
);
7334 /* A regular character. */
7340 /* Come here after finding the start of the frame. Collect the rest
7341 into *BUF, verifying the checksum, length, and handling run-length
7342 compression. NUL terminate the buffer. If there is not enough room,
7343 expand *BUF using xrealloc.
7345 Returns -1 on error, number of characters in buffer (ignoring the
7346 trailing NULL) on success. (could be extended to return one of the
7347 SERIAL status indications). */
7350 read_frame (char **buf_p
,
7357 struct remote_state
*rs
= get_remote_state ();
7364 c
= readchar (remote_timeout
);
7367 case SERIAL_TIMEOUT
:
7369 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7373 fputs_filtered ("Saw new packet start in middle of old one\n",
7375 return -1; /* Start a new packet, count retries. */
7378 unsigned char pktcsum
;
7384 check_0
= readchar (remote_timeout
);
7386 check_1
= readchar (remote_timeout
);
7388 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7391 fputs_filtered ("Timeout in checksum, retrying\n",
7395 else if (check_0
< 0 || check_1
< 0)
7398 fputs_filtered ("Communication error in checksum\n",
7403 /* Don't recompute the checksum; with no ack packets we
7404 don't have any way to indicate a packet retransmission
7409 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7410 if (csum
== pktcsum
)
7415 struct cleanup
*old_chain
;
7418 str
= escape_buffer (buf
, bc
);
7419 old_chain
= make_cleanup (xfree
, str
);
7420 fprintf_unfiltered (gdb_stdlog
,
7421 "Bad checksum, sentsum=0x%x, "
7422 "csum=0x%x, buf=%s\n",
7423 pktcsum
, csum
, str
);
7424 do_cleanups (old_chain
);
7426 /* Number of characters in buffer ignoring trailing
7430 case '*': /* Run length encoding. */
7435 c
= readchar (remote_timeout
);
7437 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7439 /* The character before ``*'' is repeated. */
7441 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7443 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7445 /* Make some more room in the buffer. */
7446 *sizeof_buf
+= repeat
;
7447 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7451 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7457 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7461 if (bc
>= *sizeof_buf
- 1)
7463 /* Make some more room in the buffer. */
7465 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7476 /* Read a packet from the remote machine, with error checking, and
7477 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7478 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7479 rather than timing out; this is used (in synchronous mode) to wait
7480 for a target that is is executing user code to stop. */
7481 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7482 don't have to change all the calls to getpkt to deal with the
7483 return value, because at the moment I don't know what the right
7484 thing to do it for those. */
7492 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7496 /* Read a packet from the remote machine, with error checking, and
7497 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7498 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7499 rather than timing out; this is used (in synchronous mode) to wait
7500 for a target that is is executing user code to stop. If FOREVER ==
7501 0, this function is allowed to time out gracefully and return an
7502 indication of this to the caller. Otherwise return the number of
7503 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7504 enough reason to return to the caller. *IS_NOTIF is an output
7505 boolean that indicates whether *BUF holds a notification or not
7506 (a regular packet). */
7509 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7510 int expecting_notif
, int *is_notif
)
7512 struct remote_state
*rs
= get_remote_state ();
7518 /* We're reading a new response. Make sure we don't look at a
7519 previously cached response. */
7520 rs
->cached_wait_status
= 0;
7522 strcpy (*buf
, "timeout");
7525 timeout
= watchdog
> 0 ? watchdog
: -1;
7526 else if (expecting_notif
)
7527 timeout
= 0; /* There should already be a char in the buffer. If
7530 timeout
= remote_timeout
;
7534 /* Process any number of notifications, and then return when
7538 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7540 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7542 /* This can loop forever if the remote side sends us
7543 characters continuously, but if it pauses, we'll get
7544 SERIAL_TIMEOUT from readchar because of timeout. Then
7545 we'll count that as a retry.
7547 Note that even when forever is set, we will only wait
7548 forever prior to the start of a packet. After that, we
7549 expect characters to arrive at a brisk pace. They should
7550 show up within remote_timeout intervals. */
7552 c
= readchar (timeout
);
7553 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7555 if (c
== SERIAL_TIMEOUT
)
7557 if (expecting_notif
)
7558 return -1; /* Don't complain, it's normal to not get
7559 anything in this case. */
7561 if (forever
) /* Watchdog went off? Kill the target. */
7564 remote_unpush_target ();
7565 throw_error (TARGET_CLOSE_ERROR
,
7566 _("Watchdog timeout has expired. "
7567 "Target detached."));
7570 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7574 /* We've found the start of a packet or notification.
7575 Now collect the data. */
7576 val
= read_frame (buf
, sizeof_buf
);
7581 remote_serial_write ("-", 1);
7584 if (tries
> MAX_TRIES
)
7586 /* We have tried hard enough, and just can't receive the
7587 packet/notification. Give up. */
7588 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7590 /* Skip the ack char if we're in no-ack mode. */
7591 if (!rs
->noack_mode
)
7592 remote_serial_write ("+", 1);
7596 /* If we got an ordinary packet, return that to our caller. */
7601 struct cleanup
*old_chain
;
7604 str
= escape_buffer (*buf
, val
);
7605 old_chain
= make_cleanup (xfree
, str
);
7606 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7607 do_cleanups (old_chain
);
7610 /* Skip the ack char if we're in no-ack mode. */
7611 if (!rs
->noack_mode
)
7612 remote_serial_write ("+", 1);
7613 if (is_notif
!= NULL
)
7618 /* If we got a notification, handle it, and go back to looking
7622 gdb_assert (c
== '%');
7626 struct cleanup
*old_chain
;
7629 str
= escape_buffer (*buf
, val
);
7630 old_chain
= make_cleanup (xfree
, str
);
7631 fprintf_unfiltered (gdb_stdlog
,
7632 " Notification received: %s\n",
7634 do_cleanups (old_chain
);
7636 if (is_notif
!= NULL
)
7639 handle_notification (rs
->notif_state
, *buf
);
7641 /* Notifications require no acknowledgement. */
7643 if (expecting_notif
)
7650 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7652 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7656 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7659 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7665 remote_kill (struct target_ops
*ops
)
7667 volatile struct gdb_exception ex
;
7669 /* Catch errors so the user can quit from gdb even when we
7670 aren't on speaking terms with the remote system. */
7671 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7677 if (ex
.error
== TARGET_CLOSE_ERROR
)
7679 /* If we got an (EOF) error that caused the target
7680 to go away, then we're done, that's what we wanted.
7681 "k" is susceptible to cause a premature EOF, given
7682 that the remote server isn't actually required to
7683 reply to "k", and it can happen that it doesn't
7684 even get to reply ACK to the "k". */
7688 /* Otherwise, something went wrong. We didn't actually kill
7689 the target. Just propagate the exception, and let the
7690 user or higher layers decide what to do. */
7691 throw_exception (ex
);
7694 /* We've killed the remote end, we get to mourn it. Since this is
7695 target remote, single-process, mourning the inferior also
7696 unpushes remote_ops. */
7697 target_mourn_inferior ();
7701 remote_vkill (int pid
, struct remote_state
*rs
)
7703 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7706 /* Tell the remote target to detach. */
7707 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7709 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7711 if (packet_ok (rs
->buf
,
7712 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7714 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7721 extended_remote_kill (struct target_ops
*ops
)
7724 int pid
= ptid_get_pid (inferior_ptid
);
7725 struct remote_state
*rs
= get_remote_state ();
7727 res
= remote_vkill (pid
, rs
);
7728 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7730 /* Don't try 'k' on a multi-process aware stub -- it has no way
7731 to specify the pid. */
7735 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7736 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7739 /* Don't wait for it to die. I'm not really sure it matters whether
7740 we do or not. For the existing stubs, kill is a noop. */
7746 error (_("Can't kill process"));
7748 target_mourn_inferior ();
7752 remote_mourn (struct target_ops
*ops
)
7754 remote_mourn_1 (ops
);
7757 /* Worker function for remote_mourn. */
7759 remote_mourn_1 (struct target_ops
*target
)
7761 unpush_target (target
);
7763 /* remote_close takes care of doing most of the clean up. */
7764 generic_mourn_inferior ();
7768 extended_remote_mourn_1 (struct target_ops
*target
)
7770 struct remote_state
*rs
= get_remote_state ();
7772 /* In case we got here due to an error, but we're going to stay
7774 rs
->waiting_for_stop_reply
= 0;
7776 /* If the current general thread belonged to the process we just
7777 detached from or has exited, the remote side current general
7778 thread becomes undefined. Considering a case like this:
7780 - We just got here due to a detach.
7781 - The process that we're detaching from happens to immediately
7782 report a global breakpoint being hit in non-stop mode, in the
7783 same thread we had selected before.
7784 - GDB attaches to this process again.
7785 - This event happens to be the next event we handle.
7787 GDB would consider that the current general thread didn't need to
7788 be set on the stub side (with Hg), since for all it knew,
7789 GENERAL_THREAD hadn't changed.
7791 Notice that although in all-stop mode, the remote server always
7792 sets the current thread to the thread reporting the stop event,
7793 that doesn't happen in non-stop mode; in non-stop, the stub *must
7794 not* change the current thread when reporting a breakpoint hit,
7795 due to the decoupling of event reporting and event handling.
7797 To keep things simple, we always invalidate our notion of the
7799 record_currthread (rs
, minus_one_ptid
);
7801 /* Unlike "target remote", we do not want to unpush the target; then
7802 the next time the user says "run", we won't be connected. */
7804 /* Call common code to mark the inferior as not running. */
7805 generic_mourn_inferior ();
7807 if (!have_inferiors ())
7809 if (!remote_multi_process_p (rs
))
7811 /* Check whether the target is running now - some remote stubs
7812 automatically restart after kill. */
7814 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7816 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7818 /* Assume that the target has been restarted. Set
7819 inferior_ptid so that bits of core GDB realizes
7820 there's something here, e.g., so that the user can
7821 say "kill" again. */
7822 inferior_ptid
= magic_null_ptid
;
7829 extended_remote_mourn (struct target_ops
*ops
)
7831 extended_remote_mourn_1 (ops
);
7835 extended_remote_supports_disable_randomization (void)
7837 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7842 extended_remote_disable_randomization (int val
)
7844 struct remote_state
*rs
= get_remote_state ();
7847 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7850 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7852 error (_("Target does not support QDisableRandomization."));
7853 if (strcmp (reply
, "OK") != 0)
7854 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7858 extended_remote_run (char *args
)
7860 struct remote_state
*rs
= get_remote_state ();
7863 /* If the user has disabled vRun support, or we have detected that
7864 support is not available, do not try it. */
7865 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7868 strcpy (rs
->buf
, "vRun;");
7869 len
= strlen (rs
->buf
);
7871 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7872 error (_("Remote file name too long for run packet"));
7873 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
7874 strlen (remote_exec_file
));
7876 gdb_assert (args
!= NULL
);
7879 struct cleanup
*back_to
;
7883 argv
= gdb_buildargv (args
);
7884 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7885 for (i
= 0; argv
[i
] != NULL
; i
++)
7887 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7888 error (_("Argument list too long for run packet"));
7889 rs
->buf
[len
++] = ';';
7890 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
7893 do_cleanups (back_to
);
7896 rs
->buf
[len
++] = '\0';
7899 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7901 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7903 /* We have a wait response. All is well. */
7906 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7907 /* It wasn't disabled before, but it is now. */
7911 if (remote_exec_file
[0] == '\0')
7912 error (_("Running the default executable on the remote target failed; "
7913 "try \"set remote exec-file\"?"));
7915 error (_("Running \"%s\" on the remote target failed"),
7920 /* In the extended protocol we want to be able to do things like
7921 "run" and have them basically work as expected. So we need
7922 a special create_inferior function. We support changing the
7923 executable file and the command line arguments, but not the
7927 extended_remote_create_inferior (struct target_ops
*ops
,
7928 char *exec_file
, char *args
,
7929 char **env
, int from_tty
)
7933 struct remote_state
*rs
= get_remote_state ();
7935 /* If running asynchronously, register the target file descriptor
7936 with the event loop. */
7937 if (target_can_async_p ())
7938 target_async (inferior_event_handler
, 0);
7940 /* Disable address space randomization if requested (and supported). */
7941 if (extended_remote_supports_disable_randomization ())
7942 extended_remote_disable_randomization (disable_randomization
);
7944 /* Now restart the remote server. */
7945 run_worked
= extended_remote_run (args
) != -1;
7948 /* vRun was not supported. Fail if we need it to do what the
7950 if (remote_exec_file
[0])
7951 error (_("Remote target does not support \"set remote exec-file\""));
7953 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7955 /* Fall back to "R". */
7956 extended_remote_restart ();
7959 if (!have_inferiors ())
7961 /* Clean up from the last time we ran, before we mark the target
7962 running again. This will mark breakpoints uninserted, and
7963 get_offsets may insert breakpoints. */
7964 init_thread_list ();
7965 init_wait_for_inferior ();
7968 /* vRun's success return is a stop reply. */
7969 stop_reply
= run_worked
? rs
->buf
: NULL
;
7970 add_current_inferior_and_thread (stop_reply
);
7972 /* Get updated offsets, if the stub uses qOffsets. */
7977 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7978 the list of conditions (in agent expression bytecode format), if any, the
7979 target needs to evaluate. The output is placed into the packet buffer
7980 started from BUF and ended at BUF_END. */
7983 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7984 struct bp_target_info
*bp_tgt
, char *buf
,
7987 struct agent_expr
*aexpr
= NULL
;
7990 char *buf_start
= buf
;
7992 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7995 buf
+= strlen (buf
);
7996 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
7999 /* Send conditions to the target and free the vector. */
8001 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8004 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8005 buf
+= strlen (buf
);
8006 for (i
= 0; i
< aexpr
->len
; ++i
)
8007 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8014 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8015 struct bp_target_info
*bp_tgt
, char *buf
)
8017 struct agent_expr
*aexpr
= NULL
;
8020 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8023 buf
+= strlen (buf
);
8025 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8026 buf
+= strlen (buf
);
8028 /* Concatenate all the agent expressions that are commands into the
8031 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8034 sprintf (buf
, "X%x,", aexpr
->len
);
8035 buf
+= strlen (buf
);
8036 for (i
= 0; i
< aexpr
->len
; ++i
)
8037 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8042 /* Insert a breakpoint. On targets that have software breakpoint
8043 support, we ask the remote target to do the work; on targets
8044 which don't, we insert a traditional memory breakpoint. */
8047 remote_insert_breakpoint (struct target_ops
*ops
,
8048 struct gdbarch
*gdbarch
,
8049 struct bp_target_info
*bp_tgt
)
8051 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8052 If it succeeds, then set the support to PACKET_ENABLE. If it
8053 fails, and the user has explicitly requested the Z support then
8054 report an error, otherwise, mark it disabled and go on. */
8056 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8058 CORE_ADDR addr
= bp_tgt
->placed_address
;
8059 struct remote_state
*rs
;
8062 struct condition_list
*cond
= NULL
;
8064 /* Make sure the remote is pointing at the right process, if
8066 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8067 set_general_process ();
8069 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8071 rs
= get_remote_state ();
8073 endbuf
= rs
->buf
+ get_remote_packet_size ();
8078 addr
= (ULONGEST
) remote_address_masked (addr
);
8079 p
+= hexnumstr (p
, addr
);
8080 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8082 if (remote_supports_cond_breakpoints ())
8083 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8085 if (remote_can_run_breakpoint_commands ())
8086 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8089 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8091 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8096 bp_tgt
->placed_address
= addr
;
8097 bp_tgt
->placed_size
= bpsize
;
8099 case PACKET_UNKNOWN
:
8104 /* If this breakpoint has target-side commands but this stub doesn't
8105 support Z0 packets, throw error. */
8106 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8107 throw_error (NOT_SUPPORTED_ERROR
, _("\
8108 Target doesn't support breakpoints that have target side commands."));
8110 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8114 remote_remove_breakpoint (struct target_ops
*ops
,
8115 struct gdbarch
*gdbarch
,
8116 struct bp_target_info
*bp_tgt
)
8118 CORE_ADDR addr
= bp_tgt
->placed_address
;
8119 struct remote_state
*rs
= get_remote_state ();
8121 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8124 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8126 /* Make sure the remote is pointing at the right process, if
8128 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8129 set_general_process ();
8135 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8136 p
+= hexnumstr (p
, addr
);
8137 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8140 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8142 return (rs
->buf
[0] == 'E');
8145 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8149 watchpoint_to_Z_packet (int type
)
8154 return Z_PACKET_WRITE_WP
;
8157 return Z_PACKET_READ_WP
;
8160 return Z_PACKET_ACCESS_WP
;
8163 internal_error (__FILE__
, __LINE__
,
8164 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8169 remote_insert_watchpoint (struct target_ops
*self
,
8170 CORE_ADDR addr
, int len
, int type
,
8171 struct expression
*cond
)
8173 struct remote_state
*rs
= get_remote_state ();
8174 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8176 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8178 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8181 /* Make sure the remote is pointing at the right process, if
8183 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8184 set_general_process ();
8186 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8187 p
= strchr (rs
->buf
, '\0');
8188 addr
= remote_address_masked (addr
);
8189 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8190 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8193 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8195 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8199 case PACKET_UNKNOWN
:
8204 internal_error (__FILE__
, __LINE__
,
8205 _("remote_insert_watchpoint: reached end of function"));
8209 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8210 CORE_ADDR start
, int length
)
8212 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8214 return diff
< length
;
8219 remote_remove_watchpoint (struct target_ops
*self
,
8220 CORE_ADDR addr
, int len
, int type
,
8221 struct expression
*cond
)
8223 struct remote_state
*rs
= get_remote_state ();
8224 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8226 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8228 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8231 /* Make sure the remote is pointing at the right process, if
8233 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8234 set_general_process ();
8236 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8237 p
= strchr (rs
->buf
, '\0');
8238 addr
= remote_address_masked (addr
);
8239 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8240 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8242 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8244 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8247 case PACKET_UNKNOWN
:
8252 internal_error (__FILE__
, __LINE__
,
8253 _("remote_remove_watchpoint: reached end of function"));
8257 int remote_hw_watchpoint_limit
= -1;
8258 int remote_hw_watchpoint_length_limit
= -1;
8259 int remote_hw_breakpoint_limit
= -1;
8262 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8263 CORE_ADDR addr
, int len
)
8265 if (remote_hw_watchpoint_length_limit
== 0)
8267 else if (remote_hw_watchpoint_length_limit
< 0)
8269 else if (len
<= remote_hw_watchpoint_length_limit
)
8276 remote_check_watch_resources (struct target_ops
*self
,
8277 int type
, int cnt
, int ot
)
8279 if (type
== bp_hardware_breakpoint
)
8281 if (remote_hw_breakpoint_limit
== 0)
8283 else if (remote_hw_breakpoint_limit
< 0)
8285 else if (cnt
<= remote_hw_breakpoint_limit
)
8290 if (remote_hw_watchpoint_limit
== 0)
8292 else if (remote_hw_watchpoint_limit
< 0)
8296 else if (cnt
<= remote_hw_watchpoint_limit
)
8303 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8305 struct remote_state
*rs
= get_remote_state ();
8307 return rs
->remote_stopped_by_watchpoint_p
;
8311 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8313 struct remote_state
*rs
= get_remote_state ();
8316 if (remote_stopped_by_watchpoint (target
))
8318 *addr_p
= rs
->remote_watch_data_address
;
8327 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8328 struct bp_target_info
*bp_tgt
)
8331 struct remote_state
*rs
;
8335 /* The length field should be set to the size of a breakpoint
8336 instruction, even though we aren't inserting one ourselves. */
8338 gdbarch_remote_breakpoint_from_pc
8339 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8341 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8344 /* Make sure the remote is pointing at the right process, if
8346 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8347 set_general_process ();
8349 rs
= get_remote_state ();
8351 endbuf
= rs
->buf
+ get_remote_packet_size ();
8357 addr
= remote_address_masked (bp_tgt
->placed_address
);
8358 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8359 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8361 if (remote_supports_cond_breakpoints ())
8362 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8364 if (remote_can_run_breakpoint_commands ())
8365 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8368 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8370 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8373 if (rs
->buf
[1] == '.')
8375 message
= strchr (rs
->buf
+ 2, '.');
8377 error (_("Remote failure reply: %s"), message
+ 1);
8380 case PACKET_UNKNOWN
:
8385 internal_error (__FILE__
, __LINE__
,
8386 _("remote_insert_hw_breakpoint: reached end of function"));
8391 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8392 struct bp_target_info
*bp_tgt
)
8395 struct remote_state
*rs
= get_remote_state ();
8397 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8399 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8402 /* Make sure the remote is pointing at the right process, if
8404 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8405 set_general_process ();
8411 addr
= remote_address_masked (bp_tgt
->placed_address
);
8412 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8413 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8416 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8418 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8421 case PACKET_UNKNOWN
:
8426 internal_error (__FILE__
, __LINE__
,
8427 _("remote_remove_hw_breakpoint: reached end of function"));
8430 /* Verify memory using the "qCRC:" request. */
8433 remote_verify_memory (struct target_ops
*ops
,
8434 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8436 struct remote_state
*rs
= get_remote_state ();
8437 unsigned long host_crc
, target_crc
;
8440 /* Make sure the remote is pointing at the right process. */
8441 set_general_process ();
8443 /* FIXME: assumes lma can fit into long. */
8444 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8445 (long) lma
, (long) size
);
8448 /* Be clever; compute the host_crc before waiting for target
8450 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8452 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8453 if (rs
->buf
[0] == 'E')
8456 if (rs
->buf
[0] != 'C')
8457 error (_("remote target does not support this operation"));
8459 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8460 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8462 return (host_crc
== target_crc
);
8465 /* compare-sections command
8467 With no arguments, compares each loadable section in the exec bfd
8468 with the same memory range on the target, and reports mismatches.
8469 Useful for verifying the image on the target against the exec file. */
8472 compare_sections_command (char *args
, int from_tty
)
8475 struct cleanup
*old_chain
;
8477 const char *sectname
;
8485 error (_("command cannot be used without an exec file"));
8487 /* Make sure the remote is pointing at the right process. */
8488 set_general_process ();
8490 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8492 if (!(s
->flags
& SEC_LOAD
))
8493 continue; /* Skip non-loadable section. */
8495 size
= bfd_get_section_size (s
);
8497 continue; /* Skip zero-length section. */
8499 sectname
= bfd_get_section_name (exec_bfd
, s
);
8500 if (args
&& strcmp (args
, sectname
) != 0)
8501 continue; /* Not the section selected by user. */
8503 matched
= 1; /* Do this section. */
8506 sectdata
= xmalloc (size
);
8507 old_chain
= make_cleanup (xfree
, sectdata
);
8508 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8510 res
= target_verify_memory (sectdata
, lma
, size
);
8513 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8514 paddress (target_gdbarch (), lma
),
8515 paddress (target_gdbarch (), lma
+ size
));
8517 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8518 paddress (target_gdbarch (), lma
),
8519 paddress (target_gdbarch (), lma
+ size
));
8521 printf_filtered ("matched.\n");
8524 printf_filtered ("MIS-MATCHED!\n");
8528 do_cleanups (old_chain
);
8531 warning (_("One or more sections of the remote executable does not match\n\
8532 the loaded file\n"));
8533 if (args
&& !matched
)
8534 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8537 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8538 into remote target. The number of bytes written to the remote
8539 target is returned, or -1 for error. */
8541 static enum target_xfer_status
8542 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8543 const char *annex
, const gdb_byte
*writebuf
,
8544 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8545 struct packet_config
*packet
)
8549 struct remote_state
*rs
= get_remote_state ();
8550 int max_size
= get_memory_write_packet_size ();
8552 if (packet
->support
== PACKET_DISABLE
)
8553 return TARGET_XFER_E_IO
;
8555 /* Insert header. */
8556 i
= snprintf (rs
->buf
, max_size
,
8557 "qXfer:%s:write:%s:%s:",
8558 object_name
, annex
? annex
: "",
8559 phex_nz (offset
, sizeof offset
));
8560 max_size
-= (i
+ 1);
8562 /* Escape as much data as fits into rs->buf. */
8563 buf_len
= remote_escape_output
8564 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8566 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8567 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8568 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8569 return TARGET_XFER_E_IO
;
8571 unpack_varlen_hex (rs
->buf
, &n
);
8574 return TARGET_XFER_OK
;
8577 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8578 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8579 number of bytes read is returned, or 0 for EOF, or -1 for error.
8580 The number of bytes read may be less than LEN without indicating an
8581 EOF. PACKET is checked and updated to indicate whether the remote
8582 target supports this object. */
8584 static enum target_xfer_status
8585 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8587 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8588 ULONGEST
*xfered_len
,
8589 struct packet_config
*packet
)
8591 struct remote_state
*rs
= get_remote_state ();
8592 LONGEST i
, n
, packet_len
;
8594 if (packet
->support
== PACKET_DISABLE
)
8595 return TARGET_XFER_E_IO
;
8597 /* Check whether we've cached an end-of-object packet that matches
8599 if (rs
->finished_object
)
8601 if (strcmp (object_name
, rs
->finished_object
) == 0
8602 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8603 && offset
== rs
->finished_offset
)
8604 return TARGET_XFER_EOF
;
8607 /* Otherwise, we're now reading something different. Discard
8609 xfree (rs
->finished_object
);
8610 xfree (rs
->finished_annex
);
8611 rs
->finished_object
= NULL
;
8612 rs
->finished_annex
= NULL
;
8615 /* Request only enough to fit in a single packet. The actual data
8616 may not, since we don't know how much of it will need to be escaped;
8617 the target is free to respond with slightly less data. We subtract
8618 five to account for the response type and the protocol frame. */
8619 n
= min (get_remote_packet_size () - 5, len
);
8620 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8621 object_name
, annex
? annex
: "",
8622 phex_nz (offset
, sizeof offset
),
8623 phex_nz (n
, sizeof n
));
8624 i
= putpkt (rs
->buf
);
8626 return TARGET_XFER_E_IO
;
8629 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8630 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8631 return TARGET_XFER_E_IO
;
8633 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8634 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8636 /* 'm' means there is (or at least might be) more data after this
8637 batch. That does not make sense unless there's at least one byte
8638 of data in this reply. */
8639 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8640 error (_("Remote qXfer reply contained no data."));
8642 /* Got some data. */
8643 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8644 packet_len
- 1, readbuf
, n
);
8646 /* 'l' is an EOF marker, possibly including a final block of data,
8647 or possibly empty. If we have the final block of a non-empty
8648 object, record this fact to bypass a subsequent partial read. */
8649 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8651 rs
->finished_object
= xstrdup (object_name
);
8652 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8653 rs
->finished_offset
= offset
+ i
;
8657 return TARGET_XFER_EOF
;
8661 return TARGET_XFER_OK
;
8665 static enum target_xfer_status
8666 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8667 const char *annex
, gdb_byte
*readbuf
,
8668 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8669 ULONGEST
*xfered_len
)
8671 struct remote_state
*rs
;
8676 set_remote_traceframe ();
8677 set_general_thread (inferior_ptid
);
8679 rs
= get_remote_state ();
8681 /* Handle memory using the standard memory routines. */
8682 if (object
== TARGET_OBJECT_MEMORY
)
8684 /* If the remote target is connected but not running, we should
8685 pass this request down to a lower stratum (e.g. the executable
8687 if (!target_has_execution
)
8688 return TARGET_XFER_EOF
;
8690 if (writebuf
!= NULL
)
8691 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8693 return remote_read_bytes (offset
, readbuf
, len
, xfered_len
);
8696 /* Handle SPU memory using qxfer packets. */
8697 if (object
== TARGET_OBJECT_SPU
)
8700 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8701 xfered_len
, &remote_protocol_packets
8702 [PACKET_qXfer_spu_read
]);
8704 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8705 xfered_len
, &remote_protocol_packets
8706 [PACKET_qXfer_spu_write
]);
8709 /* Handle extra signal info using qxfer packets. */
8710 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8713 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8714 xfered_len
, &remote_protocol_packets
8715 [PACKET_qXfer_siginfo_read
]);
8717 return remote_write_qxfer (ops
, "siginfo", annex
,
8718 writebuf
, offset
, len
, xfered_len
,
8719 &remote_protocol_packets
8720 [PACKET_qXfer_siginfo_write
]);
8723 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8726 return remote_read_qxfer (ops
, "statictrace", annex
,
8727 readbuf
, offset
, len
, xfered_len
,
8728 &remote_protocol_packets
8729 [PACKET_qXfer_statictrace_read
]);
8731 return TARGET_XFER_E_IO
;
8734 /* Only handle flash writes. */
8735 if (writebuf
!= NULL
)
8741 case TARGET_OBJECT_FLASH
:
8742 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8746 return TARGET_XFER_E_IO
;
8750 /* Map pre-existing objects onto letters. DO NOT do this for new
8751 objects!!! Instead specify new query packets. */
8754 case TARGET_OBJECT_AVR
:
8758 case TARGET_OBJECT_AUXV
:
8759 gdb_assert (annex
== NULL
);
8760 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8762 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8764 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8765 return remote_read_qxfer
8766 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
8767 &remote_protocol_packets
[PACKET_qXfer_features
]);
8769 case TARGET_OBJECT_LIBRARIES
:
8770 return remote_read_qxfer
8771 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
8772 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8774 case TARGET_OBJECT_LIBRARIES_SVR4
:
8775 return remote_read_qxfer
8776 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
8777 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8779 case TARGET_OBJECT_MEMORY_MAP
:
8780 gdb_assert (annex
== NULL
);
8781 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8783 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8785 case TARGET_OBJECT_OSDATA
:
8786 /* Should only get here if we're connected. */
8787 gdb_assert (rs
->remote_desc
);
8788 return remote_read_qxfer
8789 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
8790 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8792 case TARGET_OBJECT_THREADS
:
8793 gdb_assert (annex
== NULL
);
8794 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8796 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8798 case TARGET_OBJECT_TRACEFRAME_INFO
:
8799 gdb_assert (annex
== NULL
);
8800 return remote_read_qxfer
8801 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
8802 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8804 case TARGET_OBJECT_FDPIC
:
8805 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8807 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8809 case TARGET_OBJECT_OPENVMS_UIB
:
8810 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8812 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8814 case TARGET_OBJECT_BTRACE
:
8815 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8817 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8820 return TARGET_XFER_E_IO
;
8823 /* Note: a zero OFFSET and LEN can be used to query the minimum
8825 if (offset
== 0 && len
== 0)
8826 return (get_remote_packet_size ());
8827 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8828 large enough let the caller deal with it. */
8829 if (len
< get_remote_packet_size ())
8830 return TARGET_XFER_E_IO
;
8831 len
= get_remote_packet_size ();
8833 /* Except for querying the minimum buffer size, target must be open. */
8834 if (!rs
->remote_desc
)
8835 error (_("remote query is only available after target open"));
8837 gdb_assert (annex
!= NULL
);
8838 gdb_assert (readbuf
!= NULL
);
8844 /* We used one buffer char for the remote protocol q command and
8845 another for the query type. As the remote protocol encapsulation
8846 uses 4 chars plus one extra in case we are debugging
8847 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8850 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8852 /* Bad caller may have sent forbidden characters. */
8853 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8858 gdb_assert (annex
[i
] == '\0');
8860 i
= putpkt (rs
->buf
);
8862 return TARGET_XFER_E_IO
;
8864 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8865 strcpy ((char *) readbuf
, rs
->buf
);
8867 *xfered_len
= strlen ((char *) readbuf
);
8868 return TARGET_XFER_OK
;
8872 remote_search_memory (struct target_ops
* ops
,
8873 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8874 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8875 CORE_ADDR
*found_addrp
)
8877 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8878 struct remote_state
*rs
= get_remote_state ();
8879 int max_size
= get_memory_write_packet_size ();
8880 struct packet_config
*packet
=
8881 &remote_protocol_packets
[PACKET_qSearch_memory
];
8882 /* Number of packet bytes used to encode the pattern;
8883 this could be more than PATTERN_LEN due to escape characters. */
8884 int escaped_pattern_len
;
8885 /* Amount of pattern that was encodable in the packet. */
8886 int used_pattern_len
;
8889 ULONGEST found_addr
;
8891 /* Don't go to the target if we don't have to.
8892 This is done before checking packet->support to avoid the possibility that
8893 a success for this edge case means the facility works in general. */
8894 if (pattern_len
> search_space_len
)
8896 if (pattern_len
== 0)
8898 *found_addrp
= start_addr
;
8902 /* If we already know the packet isn't supported, fall back to the simple
8903 way of searching memory. */
8905 if (packet
->support
== PACKET_DISABLE
)
8907 /* Target doesn't provided special support, fall back and use the
8908 standard support (copy memory and do the search here). */
8909 return simple_search_memory (ops
, start_addr
, search_space_len
,
8910 pattern
, pattern_len
, found_addrp
);
8913 /* Make sure the remote is pointing at the right process. */
8914 set_general_process ();
8916 /* Insert header. */
8917 i
= snprintf (rs
->buf
, max_size
,
8918 "qSearch:memory:%s;%s;",
8919 phex_nz (start_addr
, addr_size
),
8920 phex_nz (search_space_len
, sizeof (search_space_len
)));
8921 max_size
-= (i
+ 1);
8923 /* Escape as much data as fits into rs->buf. */
8924 escaped_pattern_len
=
8925 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
8926 &used_pattern_len
, max_size
);
8928 /* Bail if the pattern is too large. */
8929 if (used_pattern_len
!= pattern_len
)
8930 error (_("Pattern is too large to transmit to remote target."));
8932 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8933 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8934 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8936 /* The request may not have worked because the command is not
8937 supported. If so, fall back to the simple way. */
8938 if (packet
->support
== PACKET_DISABLE
)
8940 return simple_search_memory (ops
, start_addr
, search_space_len
,
8941 pattern
, pattern_len
, found_addrp
);
8946 if (rs
->buf
[0] == '0')
8948 else if (rs
->buf
[0] == '1')
8951 if (rs
->buf
[1] != ',')
8952 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8953 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8954 *found_addrp
= found_addr
;
8957 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8963 remote_rcmd (char *command
,
8964 struct ui_file
*outbuf
)
8966 struct remote_state
*rs
= get_remote_state ();
8969 if (!rs
->remote_desc
)
8970 error (_("remote rcmd is only available after target open"));
8972 /* Send a NULL command across as an empty command. */
8973 if (command
== NULL
)
8976 /* The query prefix. */
8977 strcpy (rs
->buf
, "qRcmd,");
8978 p
= strchr (rs
->buf
, '\0');
8980 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8981 > get_remote_packet_size ())
8982 error (_("\"monitor\" command ``%s'' is too long."), command
);
8984 /* Encode the actual command. */
8985 bin2hex ((gdb_byte
*) command
, p
, strlen (command
));
8987 if (putpkt (rs
->buf
) < 0)
8988 error (_("Communication problem with target."));
8990 /* get/display the response */
8995 /* XXX - see also remote_get_noisy_reply(). */
8996 QUIT
; /* Allow user to bail out with ^C. */
8998 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9000 /* Timeout. Continue to (try to) read responses.
9001 This is better than stopping with an error, assuming the stub
9002 is still executing the (long) monitor command.
9003 If needed, the user can interrupt gdb using C-c, obtaining
9004 an effect similar to stop on timeout. */
9009 error (_("Target does not support this command."));
9010 if (buf
[0] == 'O' && buf
[1] != 'K')
9012 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9015 if (strcmp (buf
, "OK") == 0)
9017 if (strlen (buf
) == 3 && buf
[0] == 'E'
9018 && isdigit (buf
[1]) && isdigit (buf
[2]))
9020 error (_("Protocol error with Rcmd"));
9022 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9024 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9026 fputc_unfiltered (c
, outbuf
);
9032 static VEC(mem_region_s
) *
9033 remote_memory_map (struct target_ops
*ops
)
9035 VEC(mem_region_s
) *result
= NULL
;
9036 char *text
= target_read_stralloc (¤t_target
,
9037 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9041 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9043 result
= parse_memory_map (text
);
9044 do_cleanups (back_to
);
9051 packet_command (char *args
, int from_tty
)
9053 struct remote_state
*rs
= get_remote_state ();
9055 if (!rs
->remote_desc
)
9056 error (_("command can only be used with remote target"));
9059 error (_("remote-packet command requires packet text as argument"));
9061 puts_filtered ("sending: ");
9062 print_packet (args
);
9063 puts_filtered ("\n");
9066 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9067 puts_filtered ("received: ");
9068 print_packet (rs
->buf
);
9069 puts_filtered ("\n");
9073 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9075 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9077 static void threadset_test_cmd (char *cmd
, int tty
);
9079 static void threadalive_test (char *cmd
, int tty
);
9081 static void threadlist_test_cmd (char *cmd
, int tty
);
9083 int get_and_display_threadinfo (threadref
*ref
);
9085 static void threadinfo_test_cmd (char *cmd
, int tty
);
9087 static int thread_display_step (threadref
*ref
, void *context
);
9089 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9091 static void init_remote_threadtests (void);
9093 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9096 threadset_test_cmd (char *cmd
, int tty
)
9098 int sample_thread
= SAMPLE_THREAD
;
9100 printf_filtered (_("Remote threadset test\n"));
9101 set_general_thread (sample_thread
);
9106 threadalive_test (char *cmd
, int tty
)
9108 int sample_thread
= SAMPLE_THREAD
;
9109 int pid
= ptid_get_pid (inferior_ptid
);
9110 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9112 if (remote_thread_alive (ptid
))
9113 printf_filtered ("PASS: Thread alive test\n");
9115 printf_filtered ("FAIL: Thread alive test\n");
9118 void output_threadid (char *title
, threadref
*ref
);
9121 output_threadid (char *title
, threadref
*ref
)
9125 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9127 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9131 threadlist_test_cmd (char *cmd
, int tty
)
9134 threadref nextthread
;
9135 int done
, result_count
;
9136 threadref threadlist
[3];
9138 printf_filtered ("Remote Threadlist test\n");
9139 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9140 &result_count
, &threadlist
[0]))
9141 printf_filtered ("FAIL: threadlist test\n");
9144 threadref
*scan
= threadlist
;
9145 threadref
*limit
= scan
+ result_count
;
9147 while (scan
< limit
)
9148 output_threadid (" thread ", scan
++);
9153 display_thread_info (struct gdb_ext_thread_info
*info
)
9155 output_threadid ("Threadid: ", &info
->threadid
);
9156 printf_filtered ("Name: %s\n ", info
->shortname
);
9157 printf_filtered ("State: %s\n", info
->display
);
9158 printf_filtered ("other: %s\n\n", info
->more_display
);
9162 get_and_display_threadinfo (threadref
*ref
)
9166 struct gdb_ext_thread_info threadinfo
;
9168 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9169 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9170 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9171 display_thread_info (&threadinfo
);
9176 threadinfo_test_cmd (char *cmd
, int tty
)
9178 int athread
= SAMPLE_THREAD
;
9182 int_to_threadref (&thread
, athread
);
9183 printf_filtered ("Remote Threadinfo test\n");
9184 if (!get_and_display_threadinfo (&thread
))
9185 printf_filtered ("FAIL cannot get thread info\n");
9189 thread_display_step (threadref
*ref
, void *context
)
9191 /* output_threadid(" threadstep ",ref); *//* simple test */
9192 return get_and_display_threadinfo (ref
);
9196 threadlist_update_test_cmd (char *cmd
, int tty
)
9198 printf_filtered ("Remote Threadlist update test\n");
9199 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9203 init_remote_threadtests (void)
9205 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9206 _("Fetch and print the remote list of "
9207 "thread identifiers, one pkt only"));
9208 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9209 _("Fetch and display info about one thread"));
9210 add_com ("tset", class_obscure
, threadset_test_cmd
,
9211 _("Test setting to a different thread"));
9212 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9213 _("Iterate through updating all remote thread info"));
9214 add_com ("talive", class_obscure
, threadalive_test
,
9215 _(" Remote thread alive test "));
9220 /* Convert a thread ID to a string. Returns the string in a static
9224 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9226 static char buf
[64];
9227 struct remote_state
*rs
= get_remote_state ();
9229 if (ptid_equal (ptid
, null_ptid
))
9230 return normal_pid_to_str (ptid
);
9231 else if (ptid_is_pid (ptid
))
9233 /* Printing an inferior target id. */
9235 /* When multi-process extensions are off, there's no way in the
9236 remote protocol to know the remote process id, if there's any
9237 at all. There's one exception --- when we're connected with
9238 target extended-remote, and we manually attached to a process
9239 with "attach PID". We don't record anywhere a flag that
9240 allows us to distinguish that case from the case of
9241 connecting with extended-remote and the stub already being
9242 attached to a process, and reporting yes to qAttached, hence
9243 no smart special casing here. */
9244 if (!remote_multi_process_p (rs
))
9246 xsnprintf (buf
, sizeof buf
, "Remote target");
9250 return normal_pid_to_str (ptid
);
9254 if (ptid_equal (magic_null_ptid
, ptid
))
9255 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9256 else if (rs
->extended
&& remote_multi_process_p (rs
))
9257 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9258 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9260 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9261 ptid_get_tid (ptid
));
9266 /* Get the address of the thread local variable in OBJFILE which is
9267 stored at OFFSET within the thread local storage for thread PTID. */
9270 remote_get_thread_local_address (struct target_ops
*ops
,
9271 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9273 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9275 struct remote_state
*rs
= get_remote_state ();
9277 char *endp
= rs
->buf
+ get_remote_packet_size ();
9278 enum packet_result result
;
9280 strcpy (p
, "qGetTLSAddr:");
9282 p
= write_ptid (p
, endp
, ptid
);
9284 p
+= hexnumstr (p
, offset
);
9286 p
+= hexnumstr (p
, lm
);
9290 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9291 result
= packet_ok (rs
->buf
,
9292 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9293 if (result
== PACKET_OK
)
9297 unpack_varlen_hex (rs
->buf
, &result
);
9300 else if (result
== PACKET_UNKNOWN
)
9301 throw_error (TLS_GENERIC_ERROR
,
9302 _("Remote target doesn't support qGetTLSAddr packet"));
9304 throw_error (TLS_GENERIC_ERROR
,
9305 _("Remote target failed to process qGetTLSAddr request"));
9308 throw_error (TLS_GENERIC_ERROR
,
9309 _("TLS not supported or disabled on this target"));
9314 /* Provide thread local base, i.e. Thread Information Block address.
9315 Returns 1 if ptid is found and thread_local_base is non zero. */
9318 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9320 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9322 struct remote_state
*rs
= get_remote_state ();
9324 char *endp
= rs
->buf
+ get_remote_packet_size ();
9325 enum packet_result result
;
9327 strcpy (p
, "qGetTIBAddr:");
9329 p
= write_ptid (p
, endp
, ptid
);
9333 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9334 result
= packet_ok (rs
->buf
,
9335 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9336 if (result
== PACKET_OK
)
9340 unpack_varlen_hex (rs
->buf
, &result
);
9342 *addr
= (CORE_ADDR
) result
;
9345 else if (result
== PACKET_UNKNOWN
)
9346 error (_("Remote target doesn't support qGetTIBAddr packet"));
9348 error (_("Remote target failed to process qGetTIBAddr request"));
9351 error (_("qGetTIBAddr not supported or disabled on this target"));
9356 /* Support for inferring a target description based on the current
9357 architecture and the size of a 'g' packet. While the 'g' packet
9358 can have any size (since optional registers can be left off the
9359 end), some sizes are easily recognizable given knowledge of the
9360 approximate architecture. */
9362 struct remote_g_packet_guess
9365 const struct target_desc
*tdesc
;
9367 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9368 DEF_VEC_O(remote_g_packet_guess_s
);
9370 struct remote_g_packet_data
9372 VEC(remote_g_packet_guess_s
) *guesses
;
9375 static struct gdbarch_data
*remote_g_packet_data_handle
;
9378 remote_g_packet_data_init (struct obstack
*obstack
)
9380 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9384 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9385 const struct target_desc
*tdesc
)
9387 struct remote_g_packet_data
*data
9388 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9389 struct remote_g_packet_guess new_guess
, *guess
;
9392 gdb_assert (tdesc
!= NULL
);
9395 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9397 if (guess
->bytes
== bytes
)
9398 internal_error (__FILE__
, __LINE__
,
9399 _("Duplicate g packet description added for size %d"),
9402 new_guess
.bytes
= bytes
;
9403 new_guess
.tdesc
= tdesc
;
9404 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9407 /* Return 1 if remote_read_description would do anything on this target
9408 and architecture, 0 otherwise. */
9411 remote_read_description_p (struct target_ops
*target
)
9413 struct remote_g_packet_data
*data
9414 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9416 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9422 static const struct target_desc
*
9423 remote_read_description (struct target_ops
*target
)
9425 struct remote_g_packet_data
*data
9426 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9428 /* Do not try this during initial connection, when we do not know
9429 whether there is a running but stopped thread. */
9430 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9433 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9435 struct remote_g_packet_guess
*guess
;
9437 int bytes
= send_g_packet ();
9440 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9442 if (guess
->bytes
== bytes
)
9443 return guess
->tdesc
;
9445 /* We discard the g packet. A minor optimization would be to
9446 hold on to it, and fill the register cache once we have selected
9447 an architecture, but it's too tricky to do safely. */
9453 /* Remote file transfer support. This is host-initiated I/O, not
9454 target-initiated; for target-initiated, see remote-fileio.c. */
9456 /* If *LEFT is at least the length of STRING, copy STRING to
9457 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9458 decrease *LEFT. Otherwise raise an error. */
9461 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9463 int len
= strlen (string
);
9466 error (_("Packet too long for target."));
9468 memcpy (*buffer
, string
, len
);
9472 /* NUL-terminate the buffer as a convenience, if there is
9478 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9479 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9480 decrease *LEFT. Otherwise raise an error. */
9483 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9486 if (2 * len
> *left
)
9487 error (_("Packet too long for target."));
9489 bin2hex (bytes
, *buffer
, len
);
9493 /* NUL-terminate the buffer as a convenience, if there is
9499 /* If *LEFT is large enough, convert VALUE to hex and add it to
9500 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9501 decrease *LEFT. Otherwise raise an error. */
9504 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9506 int len
= hexnumlen (value
);
9509 error (_("Packet too long for target."));
9511 hexnumstr (*buffer
, value
);
9515 /* NUL-terminate the buffer as a convenience, if there is
9521 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9522 value, *REMOTE_ERRNO to the remote error number or zero if none
9523 was included, and *ATTACHMENT to point to the start of the annex
9524 if any. The length of the packet isn't needed here; there may
9525 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9527 Return 0 if the packet could be parsed, -1 if it could not. If
9528 -1 is returned, the other variables may not be initialized. */
9531 remote_hostio_parse_result (char *buffer
, int *retcode
,
9532 int *remote_errno
, char **attachment
)
9539 if (buffer
[0] != 'F')
9543 *retcode
= strtol (&buffer
[1], &p
, 16);
9544 if (errno
!= 0 || p
== &buffer
[1])
9547 /* Check for ",errno". */
9551 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9552 if (errno
!= 0 || p
+ 1 == p2
)
9557 /* Check for ";attachment". If there is no attachment, the
9558 packet should end here. */
9561 *attachment
= p
+ 1;
9564 else if (*p
== '\0')
9570 /* Send a prepared I/O packet to the target and read its response.
9571 The prepared packet is in the global RS->BUF before this function
9572 is called, and the answer is there when we return.
9574 COMMAND_BYTES is the length of the request to send, which may include
9575 binary data. WHICH_PACKET is the packet configuration to check
9576 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9577 is set to the error number and -1 is returned. Otherwise the value
9578 returned by the function is returned.
9580 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9581 attachment is expected; an error will be reported if there's a
9582 mismatch. If one is found, *ATTACHMENT will be set to point into
9583 the packet buffer and *ATTACHMENT_LEN will be set to the
9584 attachment's length. */
9587 remote_hostio_send_command (int command_bytes
, int which_packet
,
9588 int *remote_errno
, char **attachment
,
9589 int *attachment_len
)
9591 struct remote_state
*rs
= get_remote_state ();
9592 int ret
, bytes_read
;
9593 char *attachment_tmp
;
9595 if (!rs
->remote_desc
9596 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9598 *remote_errno
= FILEIO_ENOSYS
;
9602 putpkt_binary (rs
->buf
, command_bytes
);
9603 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9605 /* If it timed out, something is wrong. Don't try to parse the
9609 *remote_errno
= FILEIO_EINVAL
;
9613 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9616 *remote_errno
= FILEIO_EINVAL
;
9618 case PACKET_UNKNOWN
:
9619 *remote_errno
= FILEIO_ENOSYS
;
9625 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9628 *remote_errno
= FILEIO_EINVAL
;
9632 /* Make sure we saw an attachment if and only if we expected one. */
9633 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9634 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9636 *remote_errno
= FILEIO_EINVAL
;
9640 /* If an attachment was found, it must point into the packet buffer;
9641 work out how many bytes there were. */
9642 if (attachment_tmp
!= NULL
)
9644 *attachment
= attachment_tmp
;
9645 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9651 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9652 remote file descriptor, or -1 if an error occurs (and set
9656 remote_hostio_open (const char *filename
, int flags
, int mode
,
9659 struct remote_state
*rs
= get_remote_state ();
9661 int left
= get_remote_packet_size () - 1;
9663 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9665 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9667 remote_buffer_add_string (&p
, &left
, ",");
9669 remote_buffer_add_int (&p
, &left
, flags
);
9670 remote_buffer_add_string (&p
, &left
, ",");
9672 remote_buffer_add_int (&p
, &left
, mode
);
9674 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9675 remote_errno
, NULL
, NULL
);
9678 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9679 Return the number of bytes written, or -1 if an error occurs (and
9680 set *REMOTE_ERRNO). */
9683 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9684 ULONGEST offset
, int *remote_errno
)
9686 struct remote_state
*rs
= get_remote_state ();
9688 int left
= get_remote_packet_size ();
9691 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9693 remote_buffer_add_int (&p
, &left
, fd
);
9694 remote_buffer_add_string (&p
, &left
, ",");
9696 remote_buffer_add_int (&p
, &left
, offset
);
9697 remote_buffer_add_string (&p
, &left
, ",");
9699 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9700 get_remote_packet_size () - (p
- rs
->buf
));
9702 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9703 remote_errno
, NULL
, NULL
);
9706 /* Read up to LEN bytes FD on the remote target into READ_BUF
9707 Return the number of bytes read, or -1 if an error occurs (and
9708 set *REMOTE_ERRNO). */
9711 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9712 ULONGEST offset
, int *remote_errno
)
9714 struct remote_state
*rs
= get_remote_state ();
9717 int left
= get_remote_packet_size ();
9718 int ret
, attachment_len
;
9721 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9723 remote_buffer_add_int (&p
, &left
, fd
);
9724 remote_buffer_add_string (&p
, &left
, ",");
9726 remote_buffer_add_int (&p
, &left
, len
);
9727 remote_buffer_add_string (&p
, &left
, ",");
9729 remote_buffer_add_int (&p
, &left
, offset
);
9731 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9732 remote_errno
, &attachment
,
9738 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9740 if (read_len
!= ret
)
9741 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9746 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9747 (and set *REMOTE_ERRNO). */
9750 remote_hostio_close (int fd
, int *remote_errno
)
9752 struct remote_state
*rs
= get_remote_state ();
9754 int left
= get_remote_packet_size () - 1;
9756 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9758 remote_buffer_add_int (&p
, &left
, fd
);
9760 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9761 remote_errno
, NULL
, NULL
);
9764 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9765 occurs (and set *REMOTE_ERRNO). */
9768 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9770 struct remote_state
*rs
= get_remote_state ();
9772 int left
= get_remote_packet_size () - 1;
9774 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9776 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9779 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9780 remote_errno
, NULL
, NULL
);
9783 /* Read value of symbolic link FILENAME on the remote target. Return
9784 a null-terminated string allocated via xmalloc, or NULL if an error
9785 occurs (and set *REMOTE_ERRNO). */
9788 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9790 struct remote_state
*rs
= get_remote_state ();
9793 int left
= get_remote_packet_size ();
9794 int len
, attachment_len
;
9798 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9800 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9803 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9804 remote_errno
, &attachment
,
9810 ret
= xmalloc (len
+ 1);
9812 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9813 (gdb_byte
*) ret
, len
);
9814 if (read_len
!= len
)
9815 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9822 remote_fileio_errno_to_host (int errnum
)
9846 case FILEIO_ENOTDIR
:
9866 case FILEIO_ENAMETOOLONG
:
9867 return ENAMETOOLONG
;
9873 remote_hostio_error (int errnum
)
9875 int host_error
= remote_fileio_errno_to_host (errnum
);
9877 if (host_error
== -1)
9878 error (_("Unknown remote I/O error %d"), errnum
);
9880 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9884 remote_hostio_close_cleanup (void *opaque
)
9886 int fd
= *(int *) opaque
;
9889 remote_hostio_close (fd
, &remote_errno
);
9894 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9896 const char *filename
= bfd_get_filename (abfd
);
9897 int fd
, remote_errno
;
9900 gdb_assert (remote_filename_p (filename
));
9902 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9905 errno
= remote_fileio_errno_to_host (remote_errno
);
9906 bfd_set_error (bfd_error_system_call
);
9910 stream
= xmalloc (sizeof (int));
9916 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9918 int fd
= *(int *)stream
;
9923 /* Ignore errors on close; these may happen if the remote
9924 connection was already torn down. */
9925 remote_hostio_close (fd
, &remote_errno
);
9927 /* Zero means success. */
9932 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9933 file_ptr nbytes
, file_ptr offset
)
9935 int fd
= *(int *)stream
;
9937 file_ptr pos
, bytes
;
9940 while (nbytes
> pos
)
9942 bytes
= remote_hostio_pread (fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
9943 offset
+ pos
, &remote_errno
);
9945 /* Success, but no bytes, means end-of-file. */
9949 errno
= remote_fileio_errno_to_host (remote_errno
);
9950 bfd_set_error (bfd_error_system_call
);
9961 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9963 /* FIXME: We should probably implement remote_hostio_stat. */
9964 sb
->st_size
= INT_MAX
;
9969 remote_filename_p (const char *filename
)
9971 return strncmp (filename
,
9972 REMOTE_SYSROOT_PREFIX
,
9973 sizeof (REMOTE_SYSROOT_PREFIX
) - 1) == 0;
9977 remote_bfd_open (const char *remote_file
, const char *target
)
9979 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9980 remote_bfd_iovec_open
, NULL
,
9981 remote_bfd_iovec_pread
,
9982 remote_bfd_iovec_close
,
9983 remote_bfd_iovec_stat
);
9989 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9991 struct cleanup
*back_to
, *close_cleanup
;
9992 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9995 int bytes_in_buffer
;
9998 struct remote_state
*rs
= get_remote_state ();
10000 if (!rs
->remote_desc
)
10001 error (_("command can only be used with remote target"));
10003 file
= gdb_fopen_cloexec (local_file
, "rb");
10005 perror_with_name (local_file
);
10006 back_to
= make_cleanup_fclose (file
);
10008 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10010 0700, &remote_errno
);
10012 remote_hostio_error (remote_errno
);
10014 /* Send up to this many bytes at once. They won't all fit in the
10015 remote packet limit, so we'll transfer slightly fewer. */
10016 io_size
= get_remote_packet_size ();
10017 buffer
= xmalloc (io_size
);
10018 make_cleanup (xfree
, buffer
);
10020 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10022 bytes_in_buffer
= 0;
10025 while (bytes_in_buffer
|| !saw_eof
)
10029 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10030 io_size
- bytes_in_buffer
,
10035 error (_("Error reading %s."), local_file
);
10038 /* EOF. Unless there is something still in the
10039 buffer from the last iteration, we are done. */
10041 if (bytes_in_buffer
== 0)
10049 bytes
+= bytes_in_buffer
;
10050 bytes_in_buffer
= 0;
10052 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10053 offset
, &remote_errno
);
10056 remote_hostio_error (remote_errno
);
10057 else if (retcode
== 0)
10058 error (_("Remote write of %d bytes returned 0!"), bytes
);
10059 else if (retcode
< bytes
)
10061 /* Short write. Save the rest of the read data for the next
10063 bytes_in_buffer
= bytes
- retcode
;
10064 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10070 discard_cleanups (close_cleanup
);
10071 if (remote_hostio_close (fd
, &remote_errno
))
10072 remote_hostio_error (remote_errno
);
10075 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10076 do_cleanups (back_to
);
10080 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10082 struct cleanup
*back_to
, *close_cleanup
;
10083 int fd
, remote_errno
, bytes
, io_size
;
10087 struct remote_state
*rs
= get_remote_state ();
10089 if (!rs
->remote_desc
)
10090 error (_("command can only be used with remote target"));
10092 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10094 remote_hostio_error (remote_errno
);
10096 file
= gdb_fopen_cloexec (local_file
, "wb");
10098 perror_with_name (local_file
);
10099 back_to
= make_cleanup_fclose (file
);
10101 /* Send up to this many bytes at once. They won't all fit in the
10102 remote packet limit, so we'll transfer slightly fewer. */
10103 io_size
= get_remote_packet_size ();
10104 buffer
= xmalloc (io_size
);
10105 make_cleanup (xfree
, buffer
);
10107 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10112 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10114 /* Success, but no bytes, means end-of-file. */
10117 remote_hostio_error (remote_errno
);
10121 bytes
= fwrite (buffer
, 1, bytes
, file
);
10123 perror_with_name (local_file
);
10126 discard_cleanups (close_cleanup
);
10127 if (remote_hostio_close (fd
, &remote_errno
))
10128 remote_hostio_error (remote_errno
);
10131 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10132 do_cleanups (back_to
);
10136 remote_file_delete (const char *remote_file
, int from_tty
)
10138 int retcode
, remote_errno
;
10139 struct remote_state
*rs
= get_remote_state ();
10141 if (!rs
->remote_desc
)
10142 error (_("command can only be used with remote target"));
10144 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10146 remote_hostio_error (remote_errno
);
10149 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10153 remote_put_command (char *args
, int from_tty
)
10155 struct cleanup
*back_to
;
10159 error_no_arg (_("file to put"));
10161 argv
= gdb_buildargv (args
);
10162 back_to
= make_cleanup_freeargv (argv
);
10163 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10164 error (_("Invalid parameters to remote put"));
10166 remote_file_put (argv
[0], argv
[1], from_tty
);
10168 do_cleanups (back_to
);
10172 remote_get_command (char *args
, int from_tty
)
10174 struct cleanup
*back_to
;
10178 error_no_arg (_("file to get"));
10180 argv
= gdb_buildargv (args
);
10181 back_to
= make_cleanup_freeargv (argv
);
10182 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10183 error (_("Invalid parameters to remote get"));
10185 remote_file_get (argv
[0], argv
[1], from_tty
);
10187 do_cleanups (back_to
);
10191 remote_delete_command (char *args
, int from_tty
)
10193 struct cleanup
*back_to
;
10197 error_no_arg (_("file to delete"));
10199 argv
= gdb_buildargv (args
);
10200 back_to
= make_cleanup_freeargv (argv
);
10201 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10202 error (_("Invalid parameters to remote delete"));
10204 remote_file_delete (argv
[0], from_tty
);
10206 do_cleanups (back_to
);
10210 remote_command (char *args
, int from_tty
)
10212 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10216 remote_can_execute_reverse (void)
10218 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10219 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10226 remote_supports_non_stop (void)
10232 remote_supports_disable_randomization (void)
10234 /* Only supported in extended mode. */
10239 remote_supports_multi_process (void)
10241 struct remote_state
*rs
= get_remote_state ();
10243 /* Only extended-remote handles being attached to multiple
10244 processes, even though plain remote can use the multi-process
10245 thread id extensions, so that GDB knows the target process's
10247 return rs
->extended
&& remote_multi_process_p (rs
);
10251 remote_supports_cond_tracepoints (void)
10253 struct remote_state
*rs
= get_remote_state ();
10255 return rs
->cond_tracepoints
;
10259 remote_supports_cond_breakpoints (void)
10261 struct remote_state
*rs
= get_remote_state ();
10263 return rs
->cond_breakpoints
;
10267 remote_supports_fast_tracepoints (void)
10269 struct remote_state
*rs
= get_remote_state ();
10271 return rs
->fast_tracepoints
;
10275 remote_supports_static_tracepoints (void)
10277 struct remote_state
*rs
= get_remote_state ();
10279 return rs
->static_tracepoints
;
10283 remote_supports_install_in_trace (void)
10285 struct remote_state
*rs
= get_remote_state ();
10287 return rs
->install_in_trace
;
10291 remote_supports_enable_disable_tracepoint (void)
10293 struct remote_state
*rs
= get_remote_state ();
10295 return rs
->enable_disable_tracepoints
;
10299 remote_supports_string_tracing (void)
10301 struct remote_state
*rs
= get_remote_state ();
10303 return rs
->string_tracing
;
10307 remote_can_run_breakpoint_commands (void)
10309 struct remote_state
*rs
= get_remote_state ();
10311 return rs
->breakpoint_commands
;
10315 remote_trace_init (void)
10318 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10319 if (strcmp (target_buf
, "OK") != 0)
10320 error (_("Target does not support this command."));
10323 static void free_actions_list (char **actions_list
);
10324 static void free_actions_list_cleanup_wrapper (void *);
10326 free_actions_list_cleanup_wrapper (void *al
)
10328 free_actions_list (al
);
10332 free_actions_list (char **actions_list
)
10336 if (actions_list
== 0)
10339 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10340 xfree (actions_list
[ndx
]);
10342 xfree (actions_list
);
10345 /* Recursive routine to walk through command list including loops, and
10346 download packets for each command. */
10349 remote_download_command_source (int num
, ULONGEST addr
,
10350 struct command_line
*cmds
)
10352 struct remote_state
*rs
= get_remote_state ();
10353 struct command_line
*cmd
;
10355 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10357 QUIT
; /* Allow user to bail out with ^C. */
10358 strcpy (rs
->buf
, "QTDPsrc:");
10359 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10360 rs
->buf
+ strlen (rs
->buf
),
10361 rs
->buf_size
- strlen (rs
->buf
));
10363 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10364 if (strcmp (target_buf
, "OK"))
10365 warning (_("Target does not support source download."));
10367 if (cmd
->control_type
== while_control
10368 || cmd
->control_type
== while_stepping_control
)
10370 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10372 QUIT
; /* Allow user to bail out with ^C. */
10373 strcpy (rs
->buf
, "QTDPsrc:");
10374 encode_source_string (num
, addr
, "cmd", "end",
10375 rs
->buf
+ strlen (rs
->buf
),
10376 rs
->buf_size
- strlen (rs
->buf
));
10378 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10379 if (strcmp (target_buf
, "OK"))
10380 warning (_("Target does not support source download."));
10386 remote_download_tracepoint (struct bp_location
*loc
)
10388 #define BUF_SIZE 2048
10392 char buf
[BUF_SIZE
];
10393 char **tdp_actions
;
10394 char **stepping_actions
;
10396 struct cleanup
*old_chain
= NULL
;
10397 struct agent_expr
*aexpr
;
10398 struct cleanup
*aexpr_chain
= NULL
;
10400 struct breakpoint
*b
= loc
->owner
;
10401 struct tracepoint
*t
= (struct tracepoint
*) b
;
10403 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10404 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10406 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10409 tpaddr
= loc
->address
;
10410 sprintf_vma (addrbuf
, tpaddr
);
10411 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10412 addrbuf
, /* address */
10413 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10414 t
->step_count
, t
->pass_count
);
10415 /* Fast tracepoints are mostly handled by the target, but we can
10416 tell the target how big of an instruction block should be moved
10418 if (b
->type
== bp_fast_tracepoint
)
10420 /* Only test for support at download time; we may not know
10421 target capabilities at definition time. */
10422 if (remote_supports_fast_tracepoints ())
10426 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10427 tpaddr
, &isize
, NULL
))
10428 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10431 /* If it passed validation at definition but fails now,
10432 something is very wrong. */
10433 internal_error (__FILE__
, __LINE__
,
10434 _("Fast tracepoint not "
10435 "valid during download"));
10438 /* Fast tracepoints are functionally identical to regular
10439 tracepoints, so don't take lack of support as a reason to
10440 give up on the trace run. */
10441 warning (_("Target does not support fast tracepoints, "
10442 "downloading %d as regular tracepoint"), b
->number
);
10444 else if (b
->type
== bp_static_tracepoint
)
10446 /* Only test for support at download time; we may not know
10447 target capabilities at definition time. */
10448 if (remote_supports_static_tracepoints ())
10450 struct static_tracepoint_marker marker
;
10452 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10453 strcat (buf
, ":S");
10455 error (_("Static tracepoint not valid during download"));
10458 /* Fast tracepoints are functionally identical to regular
10459 tracepoints, so don't take lack of support as a reason
10460 to give up on the trace run. */
10461 error (_("Target does not support static tracepoints"));
10463 /* If the tracepoint has a conditional, make it into an agent
10464 expression and append to the definition. */
10467 /* Only test support at download time, we may not know target
10468 capabilities at definition time. */
10469 if (remote_supports_cond_tracepoints ())
10471 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10472 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10473 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10475 pkt
= buf
+ strlen (buf
);
10476 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10477 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10479 do_cleanups (aexpr_chain
);
10482 warning (_("Target does not support conditional tracepoints, "
10483 "ignoring tp %d cond"), b
->number
);
10486 if (b
->commands
|| *default_collect
)
10489 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10490 if (strcmp (target_buf
, "OK"))
10491 error (_("Target does not support tracepoints."));
10493 /* do_single_steps (t); */
10496 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10498 QUIT
; /* Allow user to bail out with ^C. */
10499 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10500 b
->number
, addrbuf
, /* address */
10502 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10505 remote_get_noisy_reply (&target_buf
,
10507 if (strcmp (target_buf
, "OK"))
10508 error (_("Error on target while setting tracepoints."));
10511 if (stepping_actions
)
10513 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10515 QUIT
; /* Allow user to bail out with ^C. */
10516 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10517 b
->number
, addrbuf
, /* address */
10518 ((ndx
== 0) ? "S" : ""),
10519 stepping_actions
[ndx
],
10520 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10522 remote_get_noisy_reply (&target_buf
,
10524 if (strcmp (target_buf
, "OK"))
10525 error (_("Error on target while setting tracepoints."));
10529 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10532 if (b
->addr_string
)
10534 strcpy (buf
, "QTDPsrc:");
10535 encode_source_string (b
->number
, loc
->address
,
10536 "at", b
->addr_string
, buf
+ strlen (buf
),
10537 2048 - strlen (buf
));
10540 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10541 if (strcmp (target_buf
, "OK"))
10542 warning (_("Target does not support source download."));
10544 if (b
->cond_string
)
10546 strcpy (buf
, "QTDPsrc:");
10547 encode_source_string (b
->number
, loc
->address
,
10548 "cond", b
->cond_string
, buf
+ strlen (buf
),
10549 2048 - strlen (buf
));
10551 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10552 if (strcmp (target_buf
, "OK"))
10553 warning (_("Target does not support source download."));
10555 remote_download_command_source (b
->number
, loc
->address
,
10556 breakpoint_commands (b
));
10559 do_cleanups (old_chain
);
10563 remote_can_download_tracepoint (void)
10565 struct remote_state
*rs
= get_remote_state ();
10566 struct trace_status
*ts
;
10569 /* Don't try to install tracepoints until we've relocated our
10570 symbols, and fetched and merged the target's tracepoint list with
10572 if (rs
->starting_up
)
10575 ts
= current_trace_status ();
10576 status
= remote_get_trace_status (ts
);
10578 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10581 /* If we are in a tracing experiment, but remote stub doesn't support
10582 installing tracepoint in trace, we have to return. */
10583 if (!remote_supports_install_in_trace ())
10591 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10593 struct remote_state
*rs
= get_remote_state ();
10596 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10597 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10599 p
= rs
->buf
+ strlen (rs
->buf
);
10600 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10601 error (_("Trace state variable name too long for tsv definition packet"));
10602 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10605 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10606 if (*target_buf
== '\0')
10607 error (_("Target does not support this command."));
10608 if (strcmp (target_buf
, "OK") != 0)
10609 error (_("Error on target while downloading trace state variable."));
10613 remote_enable_tracepoint (struct bp_location
*location
)
10615 struct remote_state
*rs
= get_remote_state ();
10618 sprintf_vma (addr_buf
, location
->address
);
10619 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10620 location
->owner
->number
, addr_buf
);
10622 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10623 if (*rs
->buf
== '\0')
10624 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10625 if (strcmp (rs
->buf
, "OK") != 0)
10626 error (_("Error on target while enabling tracepoint."));
10630 remote_disable_tracepoint (struct bp_location
*location
)
10632 struct remote_state
*rs
= get_remote_state ();
10635 sprintf_vma (addr_buf
, location
->address
);
10636 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10637 location
->owner
->number
, addr_buf
);
10639 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10640 if (*rs
->buf
== '\0')
10641 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10642 if (strcmp (rs
->buf
, "OK") != 0)
10643 error (_("Error on target while disabling tracepoint."));
10647 remote_trace_set_readonly_regions (void)
10651 bfd_size_type size
;
10657 return; /* No information to give. */
10659 strcpy (target_buf
, "QTro");
10660 offset
= strlen (target_buf
);
10661 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10663 char tmp1
[40], tmp2
[40];
10666 if ((s
->flags
& SEC_LOAD
) == 0 ||
10667 /* (s->flags & SEC_CODE) == 0 || */
10668 (s
->flags
& SEC_READONLY
) == 0)
10672 vma
= bfd_get_section_vma (abfd
, s
);
10673 size
= bfd_get_section_size (s
);
10674 sprintf_vma (tmp1
, vma
);
10675 sprintf_vma (tmp2
, vma
+ size
);
10676 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10677 if (offset
+ sec_length
+ 1 > target_buf_size
)
10679 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10682 Too many sections for read-only sections definition packet."));
10685 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10687 offset
+= sec_length
;
10691 putpkt (target_buf
);
10692 getpkt (&target_buf
, &target_buf_size
, 0);
10697 remote_trace_start (void)
10699 putpkt ("QTStart");
10700 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10701 if (*target_buf
== '\0')
10702 error (_("Target does not support this command."));
10703 if (strcmp (target_buf
, "OK") != 0)
10704 error (_("Bogus reply from target: %s"), target_buf
);
10708 remote_get_trace_status (struct trace_status
*ts
)
10710 /* Initialize it just to avoid a GCC false warning. */
10712 /* FIXME we need to get register block size some other way. */
10713 extern int trace_regblock_size
;
10714 volatile struct gdb_exception ex
;
10715 enum packet_result result
;
10717 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10720 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10722 putpkt ("qTStatus");
10724 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10726 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10730 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10732 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10735 throw_exception (ex
);
10738 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10740 /* If the remote target doesn't do tracing, flag it. */
10741 if (result
== PACKET_UNKNOWN
)
10744 /* We're working with a live target. */
10745 ts
->filename
= NULL
;
10748 error (_("Bogus trace status reply from target: %s"), target_buf
);
10750 /* Function 'parse_trace_status' sets default value of each field of
10751 'ts' at first, so we don't have to do it here. */
10752 parse_trace_status (p
, ts
);
10754 return ts
->running
;
10758 remote_get_tracepoint_status (struct breakpoint
*bp
,
10759 struct uploaded_tp
*utp
)
10761 struct remote_state
*rs
= get_remote_state ();
10763 struct bp_location
*loc
;
10764 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10765 size_t size
= get_remote_packet_size ();
10769 tp
->base
.hit_count
= 0;
10770 tp
->traceframe_usage
= 0;
10771 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10773 /* If the tracepoint was never downloaded, don't go asking for
10775 if (tp
->number_on_target
== 0)
10777 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10778 phex_nz (loc
->address
, 0));
10780 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10781 if (reply
&& *reply
)
10784 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10790 utp
->hit_count
= 0;
10791 utp
->traceframe_usage
= 0;
10792 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10793 phex_nz (utp
->addr
, 0));
10795 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10796 if (reply
&& *reply
)
10799 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10805 remote_trace_stop (void)
10808 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10809 if (*target_buf
== '\0')
10810 error (_("Target does not support this command."));
10811 if (strcmp (target_buf
, "OK") != 0)
10812 error (_("Bogus reply from target: %s"), target_buf
);
10816 remote_trace_find (enum trace_find_type type
, int num
,
10817 CORE_ADDR addr1
, CORE_ADDR addr2
,
10820 struct remote_state
*rs
= get_remote_state ();
10821 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10823 int target_frameno
= -1, target_tracept
= -1;
10825 /* Lookups other than by absolute frame number depend on the current
10826 trace selected, so make sure it is correct on the remote end
10828 if (type
!= tfind_number
)
10829 set_remote_traceframe ();
10832 strcpy (p
, "QTFrame:");
10833 p
= strchr (p
, '\0');
10837 xsnprintf (p
, endbuf
- p
, "%x", num
);
10840 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10843 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10846 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10847 phex_nz (addr2
, 0));
10849 case tfind_outside
:
10850 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10851 phex_nz (addr2
, 0));
10854 error (_("Unknown trace find type %d"), type
);
10858 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10859 if (*reply
== '\0')
10860 error (_("Target does not support this command."));
10862 while (reply
&& *reply
)
10867 target_frameno
= (int) strtol (p
, &reply
, 16);
10869 error (_("Unable to parse trace frame number"));
10870 /* Don't update our remote traceframe number cache on failure
10871 to select a remote traceframe. */
10872 if (target_frameno
== -1)
10877 target_tracept
= (int) strtol (p
, &reply
, 16);
10879 error (_("Unable to parse tracepoint number"));
10881 case 'O': /* "OK"? */
10882 if (reply
[1] == 'K' && reply
[2] == '\0')
10885 error (_("Bogus reply from target: %s"), reply
);
10888 error (_("Bogus reply from target: %s"), reply
);
10891 *tpp
= target_tracept
;
10893 rs
->remote_traceframe_number
= target_frameno
;
10894 return target_frameno
;
10898 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10900 struct remote_state
*rs
= get_remote_state ();
10904 set_remote_traceframe ();
10906 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10908 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10909 if (reply
&& *reply
)
10913 unpack_varlen_hex (reply
+ 1, &uval
);
10914 *val
= (LONGEST
) uval
;
10922 remote_save_trace_data (const char *filename
)
10924 struct remote_state
*rs
= get_remote_state ();
10928 strcpy (p
, "QTSave:");
10930 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10931 error (_("Remote file name too long for trace save packet"));
10932 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
10935 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10936 if (*reply
== '\0')
10937 error (_("Target does not support this command."));
10938 if (strcmp (reply
, "OK") != 0)
10939 error (_("Bogus reply from target: %s"), reply
);
10943 /* This is basically a memory transfer, but needs to be its own packet
10944 because we don't know how the target actually organizes its trace
10945 memory, plus we want to be able to ask for as much as possible, but
10946 not be unhappy if we don't get as much as we ask for. */
10949 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10951 struct remote_state
*rs
= get_remote_state ();
10957 strcpy (p
, "qTBuffer:");
10959 p
+= hexnumstr (p
, offset
);
10961 p
+= hexnumstr (p
, len
);
10965 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10966 if (reply
&& *reply
)
10968 /* 'l' by itself means we're at the end of the buffer and
10969 there is nothing more to get. */
10973 /* Convert the reply into binary. Limit the number of bytes to
10974 convert according to our passed-in buffer size, rather than
10975 what was returned in the packet; if the target is
10976 unexpectedly generous and gives us a bigger reply than we
10977 asked for, we don't want to crash. */
10978 rslt
= hex2bin (target_buf
, buf
, len
);
10982 /* Something went wrong, flag as an error. */
10987 remote_set_disconnected_tracing (int val
)
10989 struct remote_state
*rs
= get_remote_state ();
10991 if (rs
->disconnected_tracing
)
10995 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10997 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10998 if (*reply
== '\0')
10999 error (_("Target does not support this command."));
11000 if (strcmp (reply
, "OK") != 0)
11001 error (_("Bogus reply from target: %s"), reply
);
11004 warning (_("Target does not support disconnected tracing."));
11008 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11010 struct thread_info
*info
= find_thread_ptid (ptid
);
11012 if (info
&& info
->private)
11013 return info
->private->core
;
11018 remote_set_circular_trace_buffer (int val
)
11020 struct remote_state
*rs
= get_remote_state ();
11023 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11025 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11026 if (*reply
== '\0')
11027 error (_("Target does not support this command."));
11028 if (strcmp (reply
, "OK") != 0)
11029 error (_("Bogus reply from target: %s"), reply
);
11032 static struct traceframe_info
*
11033 remote_traceframe_info (void)
11037 /* If current traceframe is not selected, don't bother the remote
11039 if (get_traceframe_number () < 0)
11042 text
= target_read_stralloc (¤t_target
,
11043 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11046 struct traceframe_info
*info
;
11047 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11049 info
= parse_traceframe_info (text
);
11050 do_cleanups (back_to
);
11057 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11058 instruction on which a fast tracepoint may be placed. Returns -1
11059 if the packet is not supported, and 0 if the minimum instruction
11060 length is unknown. */
11063 remote_get_min_fast_tracepoint_insn_len (void)
11065 struct remote_state
*rs
= get_remote_state ();
11068 /* If we're not debugging a process yet, the IPA can't be
11070 if (!target_has_execution
)
11073 /* Make sure the remote is pointing at the right process. */
11074 set_general_process ();
11076 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11078 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11079 if (*reply
== '\0')
11083 ULONGEST min_insn_len
;
11085 unpack_varlen_hex (reply
, &min_insn_len
);
11087 return (int) min_insn_len
;
11092 remote_set_trace_buffer_size (LONGEST val
)
11094 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11097 struct remote_state
*rs
= get_remote_state ();
11098 char *buf
= rs
->buf
;
11099 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11100 enum packet_result result
;
11102 gdb_assert (val
>= 0 || val
== -1);
11103 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11104 /* Send -1 as literal "-1" to avoid host size dependency. */
11108 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11111 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11114 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11115 result
= packet_ok (rs
->buf
,
11116 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11118 if (result
!= PACKET_OK
)
11119 warning (_("Bogus reply from target: %s"), rs
->buf
);
11124 remote_set_trace_notes (const char *user
, const char *notes
,
11125 const char *stop_notes
)
11127 struct remote_state
*rs
= get_remote_state ();
11129 char *buf
= rs
->buf
;
11130 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11133 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11136 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11137 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11143 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11144 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11150 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11151 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11155 /* Ensure the buffer is terminated. */
11159 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11160 if (*reply
== '\0')
11163 if (strcmp (reply
, "OK") != 0)
11164 error (_("Bogus reply from target: %s"), reply
);
11170 remote_use_agent (int use
)
11172 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11174 struct remote_state
*rs
= get_remote_state ();
11176 /* If the stub supports QAgent. */
11177 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11181 if (strcmp (rs
->buf
, "OK") == 0)
11192 remote_can_use_agent (void)
11194 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11197 struct btrace_target_info
11199 /* The ptid of the traced thread. */
11203 /* Check whether the target supports branch tracing. */
11206 remote_supports_btrace (struct target_ops
*self
)
11208 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11210 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11212 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11218 /* Enable branch tracing. */
11220 static struct btrace_target_info
*
11221 remote_enable_btrace (ptid_t ptid
)
11223 struct btrace_target_info
*tinfo
= NULL
;
11224 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11225 struct remote_state
*rs
= get_remote_state ();
11226 char *buf
= rs
->buf
;
11227 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11229 if (packet
->support
!= PACKET_ENABLE
)
11230 error (_("Target does not support branch tracing."));
11232 set_general_thread (ptid
);
11234 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11236 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11238 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11240 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11241 error (_("Could not enable branch tracing for %s: %s"),
11242 target_pid_to_str (ptid
), rs
->buf
+ 2);
11244 error (_("Could not enable branch tracing for %s."),
11245 target_pid_to_str (ptid
));
11248 tinfo
= xzalloc (sizeof (*tinfo
));
11249 tinfo
->ptid
= ptid
;
11254 /* Disable branch tracing. */
11257 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11259 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11260 struct remote_state
*rs
= get_remote_state ();
11261 char *buf
= rs
->buf
;
11262 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11264 if (packet
->support
!= PACKET_ENABLE
)
11265 error (_("Target does not support branch tracing."));
11267 set_general_thread (tinfo
->ptid
);
11269 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11271 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11273 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11275 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11276 error (_("Could not disable branch tracing for %s: %s"),
11277 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11279 error (_("Could not disable branch tracing for %s."),
11280 target_pid_to_str (tinfo
->ptid
));
11286 /* Teardown branch tracing. */
11289 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11291 /* We must not talk to the target during teardown. */
11295 /* Read the branch trace. */
11297 static enum btrace_error
11298 remote_read_btrace (VEC (btrace_block_s
) **btrace
,
11299 struct btrace_target_info
*tinfo
,
11300 enum btrace_read_type type
)
11302 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11303 struct remote_state
*rs
= get_remote_state ();
11304 struct cleanup
*cleanup
;
11308 if (packet
->support
!= PACKET_ENABLE
)
11309 error (_("Target does not support branch tracing."));
11311 #if !defined(HAVE_LIBEXPAT)
11312 error (_("Cannot process branch tracing result. XML parsing not supported."));
11317 case BTRACE_READ_ALL
:
11320 case BTRACE_READ_NEW
:
11323 case BTRACE_READ_DELTA
:
11327 internal_error (__FILE__
, __LINE__
,
11328 _("Bad branch tracing read type: %u."),
11329 (unsigned int) type
);
11332 xml
= target_read_stralloc (¤t_target
,
11333 TARGET_OBJECT_BTRACE
, annex
);
11335 return BTRACE_ERR_UNKNOWN
;
11337 cleanup
= make_cleanup (xfree
, xml
);
11338 *btrace
= parse_xml_btrace (xml
);
11339 do_cleanups (cleanup
);
11341 return BTRACE_ERR_NONE
;
11345 remote_augmented_libraries_svr4_read (void)
11347 struct remote_state
*rs
= get_remote_state ();
11349 return rs
->augmented_libraries_svr4_read
;
11352 /* Implementation of to_load. */
11355 remote_load (char *name
, int from_tty
)
11357 generic_load (name
, from_tty
);
11361 init_remote_ops (void)
11363 remote_ops
.to_shortname
= "remote";
11364 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11365 remote_ops
.to_doc
=
11366 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11367 Specify the serial device it is connected to\n\
11368 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11369 remote_ops
.to_open
= remote_open
;
11370 remote_ops
.to_close
= remote_close
;
11371 remote_ops
.to_detach
= remote_detach
;
11372 remote_ops
.to_disconnect
= remote_disconnect
;
11373 remote_ops
.to_resume
= remote_resume
;
11374 remote_ops
.to_wait
= remote_wait
;
11375 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11376 remote_ops
.to_store_registers
= remote_store_registers
;
11377 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11378 remote_ops
.to_files_info
= remote_files_info
;
11379 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11380 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11381 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11382 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11383 remote_ops
.to_watchpoint_addr_within_range
=
11384 remote_watchpoint_addr_within_range
;
11385 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11386 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11387 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11388 remote_ops
.to_region_ok_for_hw_watchpoint
11389 = remote_region_ok_for_hw_watchpoint
;
11390 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11391 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11392 remote_ops
.to_kill
= remote_kill
;
11393 remote_ops
.to_load
= remote_load
;
11394 remote_ops
.to_mourn_inferior
= remote_mourn
;
11395 remote_ops
.to_pass_signals
= remote_pass_signals
;
11396 remote_ops
.to_program_signals
= remote_program_signals
;
11397 remote_ops
.to_thread_alive
= remote_thread_alive
;
11398 remote_ops
.to_find_new_threads
= remote_threads_info
;
11399 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11400 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11401 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11402 remote_ops
.to_stop
= remote_stop
;
11403 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11404 remote_ops
.to_rcmd
= remote_rcmd
;
11405 remote_ops
.to_log_command
= serial_log_command
;
11406 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11407 remote_ops
.to_stratum
= process_stratum
;
11408 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11409 remote_ops
.to_has_memory
= default_child_has_memory
;
11410 remote_ops
.to_has_stack
= default_child_has_stack
;
11411 remote_ops
.to_has_registers
= default_child_has_registers
;
11412 remote_ops
.to_has_execution
= default_child_has_execution
;
11413 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11414 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11415 remote_ops
.to_magic
= OPS_MAGIC
;
11416 remote_ops
.to_memory_map
= remote_memory_map
;
11417 remote_ops
.to_flash_erase
= remote_flash_erase
;
11418 remote_ops
.to_flash_done
= remote_flash_done
;
11419 remote_ops
.to_read_description
= remote_read_description
;
11420 remote_ops
.to_search_memory
= remote_search_memory
;
11421 remote_ops
.to_can_async_p
= remote_can_async_p
;
11422 remote_ops
.to_is_async_p
= remote_is_async_p
;
11423 remote_ops
.to_async
= remote_async
;
11424 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11425 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11426 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11427 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11428 remote_ops
.to_supports_disable_randomization
11429 = remote_supports_disable_randomization
;
11430 remote_ops
.to_fileio_open
= remote_hostio_open
;
11431 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11432 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11433 remote_ops
.to_fileio_close
= remote_hostio_close
;
11434 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11435 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11436 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11437 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11438 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11439 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11440 remote_ops
.to_trace_init
= remote_trace_init
;
11441 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11442 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11443 remote_ops
.to_download_trace_state_variable
11444 = remote_download_trace_state_variable
;
11445 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11446 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11447 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11448 remote_ops
.to_trace_start
= remote_trace_start
;
11449 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11450 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11451 remote_ops
.to_trace_stop
= remote_trace_stop
;
11452 remote_ops
.to_trace_find
= remote_trace_find
;
11453 remote_ops
.to_get_trace_state_variable_value
11454 = remote_get_trace_state_variable_value
;
11455 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11456 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11457 remote_ops
.to_upload_trace_state_variables
11458 = remote_upload_trace_state_variables
;
11459 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11460 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11461 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11462 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11463 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11464 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11465 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11466 remote_ops
.to_verify_memory
= remote_verify_memory
;
11467 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11468 remote_ops
.to_set_permissions
= remote_set_permissions
;
11469 remote_ops
.to_static_tracepoint_marker_at
11470 = remote_static_tracepoint_marker_at
;
11471 remote_ops
.to_static_tracepoint_markers_by_strid
11472 = remote_static_tracepoint_markers_by_strid
;
11473 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11474 remote_ops
.to_use_agent
= remote_use_agent
;
11475 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11476 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11477 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11478 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11479 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11480 remote_ops
.to_read_btrace
= remote_read_btrace
;
11481 remote_ops
.to_augmented_libraries_svr4_read
=
11482 remote_augmented_libraries_svr4_read
;
11485 /* Set up the extended remote vector by making a copy of the standard
11486 remote vector and adding to it. */
11489 init_extended_remote_ops (void)
11491 extended_remote_ops
= remote_ops
;
11493 extended_remote_ops
.to_shortname
= "extended-remote";
11494 extended_remote_ops
.to_longname
=
11495 "Extended remote serial target in gdb-specific protocol";
11496 extended_remote_ops
.to_doc
=
11497 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11498 Specify the serial device it is connected to (e.g. /dev/ttya).";
11499 extended_remote_ops
.to_open
= extended_remote_open
;
11500 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11501 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11502 extended_remote_ops
.to_detach
= extended_remote_detach
;
11503 extended_remote_ops
.to_attach
= extended_remote_attach
;
11504 extended_remote_ops
.to_kill
= extended_remote_kill
;
11505 extended_remote_ops
.to_supports_disable_randomization
11506 = extended_remote_supports_disable_randomization
;
11510 remote_can_async_p (struct target_ops
*ops
)
11512 struct remote_state
*rs
= get_remote_state ();
11514 if (!target_async_permitted
)
11515 /* We only enable async when the user specifically asks for it. */
11518 /* We're async whenever the serial device is. */
11519 return serial_can_async_p (rs
->remote_desc
);
11523 remote_is_async_p (struct target_ops
*ops
)
11525 struct remote_state
*rs
= get_remote_state ();
11527 if (!target_async_permitted
)
11528 /* We only enable async when the user specifically asks for it. */
11531 /* We're async whenever the serial device is. */
11532 return serial_is_async_p (rs
->remote_desc
);
11535 /* Pass the SERIAL event on and up to the client. One day this code
11536 will be able to delay notifying the client of an event until the
11537 point where an entire packet has been received. */
11539 static serial_event_ftype remote_async_serial_handler
;
11542 remote_async_serial_handler (struct serial
*scb
, void *context
)
11544 struct remote_state
*rs
= context
;
11546 /* Don't propogate error information up to the client. Instead let
11547 the client find out about the error by querying the target. */
11548 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11552 remote_async_inferior_event_handler (gdb_client_data data
)
11554 inferior_event_handler (INF_REG_EVENT
, NULL
);
11558 remote_async (struct target_ops
*ops
,
11559 void (*callback
) (enum inferior_event_type event_type
,
11563 struct remote_state
*rs
= get_remote_state ();
11565 if (callback
!= NULL
)
11567 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11568 rs
->async_client_callback
= callback
;
11569 rs
->async_client_context
= context
;
11572 serial_async (rs
->remote_desc
, NULL
, NULL
);
11576 set_remote_cmd (char *args
, int from_tty
)
11578 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11582 show_remote_cmd (char *args
, int from_tty
)
11584 /* We can't just use cmd_show_list here, because we want to skip
11585 the redundant "show remote Z-packet" and the legacy aliases. */
11586 struct cleanup
*showlist_chain
;
11587 struct cmd_list_element
*list
= remote_show_cmdlist
;
11588 struct ui_out
*uiout
= current_uiout
;
11590 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11591 for (; list
!= NULL
; list
= list
->next
)
11592 if (strcmp (list
->name
, "Z-packet") == 0)
11594 else if (list
->type
== not_set_cmd
)
11595 /* Alias commands are exactly like the original, except they
11596 don't have the normal type. */
11600 struct cleanup
*option_chain
11601 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11603 ui_out_field_string (uiout
, "name", list
->name
);
11604 ui_out_text (uiout
, ": ");
11605 if (list
->type
== show_cmd
)
11606 do_show_command ((char *) NULL
, from_tty
, list
);
11608 cmd_func (list
, NULL
, from_tty
);
11609 /* Close the tuple. */
11610 do_cleanups (option_chain
);
11613 /* Close the tuple. */
11614 do_cleanups (showlist_chain
);
11618 /* Function to be called whenever a new objfile (shlib) is detected. */
11620 remote_new_objfile (struct objfile
*objfile
)
11622 struct remote_state
*rs
= get_remote_state ();
11624 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11625 remote_check_symbols ();
11628 /* Pull all the tracepoints defined on the target and create local
11629 data structures representing them. We don't want to create real
11630 tracepoints yet, we don't want to mess up the user's existing
11634 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11636 struct remote_state
*rs
= get_remote_state ();
11639 /* Ask for a first packet of tracepoint definition. */
11641 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11643 while (*p
&& *p
!= 'l')
11645 parse_tracepoint_definition (p
, utpp
);
11646 /* Ask for another packet of tracepoint definition. */
11648 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11655 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11657 struct remote_state
*rs
= get_remote_state ();
11660 /* Ask for a first packet of variable definition. */
11662 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11664 while (*p
&& *p
!= 'l')
11666 parse_tsv_definition (p
, utsvp
);
11667 /* Ask for another packet of variable definition. */
11669 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11675 /* The "set/show range-stepping" show hook. */
11678 show_range_stepping (struct ui_file
*file
, int from_tty
,
11679 struct cmd_list_element
*c
,
11682 fprintf_filtered (file
,
11683 _("Debugger's willingness to use range stepping "
11684 "is %s.\n"), value
);
11687 /* The "set/show range-stepping" set hook. */
11690 set_range_stepping (char *ignore_args
, int from_tty
,
11691 struct cmd_list_element
*c
)
11693 struct remote_state
*rs
= get_remote_state ();
11695 /* Whene enabling, check whether range stepping is actually
11696 supported by the target, and warn if not. */
11697 if (use_range_stepping
)
11699 if (rs
->remote_desc
!= NULL
)
11701 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11702 remote_vcont_probe (rs
);
11704 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11705 && rs
->supports_vCont
.r
)
11709 warning (_("Range stepping is not supported by the current target"));
11714 _initialize_remote (void)
11716 struct remote_state
*rs
;
11717 struct cmd_list_element
*cmd
;
11718 const char *cmd_name
;
11720 /* architecture specific data */
11721 remote_gdbarch_data_handle
=
11722 gdbarch_data_register_post_init (init_remote_state
);
11723 remote_g_packet_data_handle
=
11724 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11726 /* Initialize the per-target state. At the moment there is only one
11727 of these, not one per target. Only one target is active at a
11729 remote_state
= new_remote_state ();
11731 init_remote_ops ();
11732 add_target (&remote_ops
);
11734 init_extended_remote_ops ();
11735 add_target (&extended_remote_ops
);
11737 /* Hook into new objfile notification. */
11738 observer_attach_new_objfile (remote_new_objfile
);
11739 /* We're no longer interested in notification events of an inferior
11741 observer_attach_inferior_exit (discard_pending_stop_replies
);
11743 /* Set up signal handlers. */
11744 async_sigint_remote_token
=
11745 create_async_signal_handler (async_remote_interrupt
, NULL
);
11746 async_sigint_remote_twice_token
=
11747 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11750 init_remote_threadtests ();
11753 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11754 /* set/show remote ... */
11756 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11757 Remote protocol specific variables\n\
11758 Configure various remote-protocol specific variables such as\n\
11759 the packets being used"),
11760 &remote_set_cmdlist
, "set remote ",
11761 0 /* allow-unknown */, &setlist
);
11762 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11763 Remote protocol specific variables\n\
11764 Configure various remote-protocol specific variables such as\n\
11765 the packets being used"),
11766 &remote_show_cmdlist
, "show remote ",
11767 0 /* allow-unknown */, &showlist
);
11769 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11770 Compare section data on target to the exec file.\n\
11771 Argument is a single section name (default: all loaded sections)."),
11774 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11775 Send an arbitrary packet to a remote target.\n\
11776 maintenance packet TEXT\n\
11777 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11778 this command sends the string TEXT to the inferior, and displays the\n\
11779 response packet. GDB supplies the initial `$' character, and the\n\
11780 terminating `#' character and checksum."),
11783 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11784 Set whether to send break if interrupted."), _("\
11785 Show whether to send break if interrupted."), _("\
11786 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11787 set_remotebreak
, show_remotebreak
,
11788 &setlist
, &showlist
);
11789 cmd_name
= "remotebreak";
11790 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11791 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11792 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11793 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11794 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11796 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11797 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11799 Set interrupt sequence to remote target."), _("\
11800 Show interrupt sequence to remote target."), _("\
11801 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11802 NULL
, show_interrupt_sequence
,
11803 &remote_set_cmdlist
,
11804 &remote_show_cmdlist
);
11806 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11807 &interrupt_on_connect
, _("\
11808 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11809 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11810 If set, interrupt sequence is sent to remote target."),
11812 &remote_set_cmdlist
, &remote_show_cmdlist
);
11814 /* Install commands for configuring memory read/write packets. */
11816 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11817 Set the maximum number of bytes per memory write packet (deprecated)."),
11819 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11820 Show the maximum number of bytes per memory write packet (deprecated)."),
11822 add_cmd ("memory-write-packet-size", no_class
,
11823 set_memory_write_packet_size
, _("\
11824 Set the maximum number of bytes per memory-write packet.\n\
11825 Specify the number of bytes in a packet or 0 (zero) for the\n\
11826 default packet size. The actual limit is further reduced\n\
11827 dependent on the target. Specify ``fixed'' to disable the\n\
11828 further restriction and ``limit'' to enable that restriction."),
11829 &remote_set_cmdlist
);
11830 add_cmd ("memory-read-packet-size", no_class
,
11831 set_memory_read_packet_size
, _("\
11832 Set the maximum number of bytes per memory-read packet.\n\
11833 Specify the number of bytes in a packet or 0 (zero) for the\n\
11834 default packet size. The actual limit is further reduced\n\
11835 dependent on the target. Specify ``fixed'' to disable the\n\
11836 further restriction and ``limit'' to enable that restriction."),
11837 &remote_set_cmdlist
);
11838 add_cmd ("memory-write-packet-size", no_class
,
11839 show_memory_write_packet_size
,
11840 _("Show the maximum number of bytes per memory-write packet."),
11841 &remote_show_cmdlist
);
11842 add_cmd ("memory-read-packet-size", no_class
,
11843 show_memory_read_packet_size
,
11844 _("Show the maximum number of bytes per memory-read packet."),
11845 &remote_show_cmdlist
);
11847 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11848 &remote_hw_watchpoint_limit
, _("\
11849 Set the maximum number of target hardware watchpoints."), _("\
11850 Show the maximum number of target hardware watchpoints."), _("\
11851 Specify a negative limit for unlimited."),
11852 NULL
, NULL
, /* FIXME: i18n: The maximum
11853 number of target hardware
11854 watchpoints is %s. */
11855 &remote_set_cmdlist
, &remote_show_cmdlist
);
11856 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11857 &remote_hw_watchpoint_length_limit
, _("\
11858 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11859 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11860 Specify a negative limit for unlimited."),
11861 NULL
, NULL
, /* FIXME: i18n: The maximum
11862 length (in bytes) of a target
11863 hardware watchpoint is %s. */
11864 &remote_set_cmdlist
, &remote_show_cmdlist
);
11865 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11866 &remote_hw_breakpoint_limit
, _("\
11867 Set the maximum number of target hardware breakpoints."), _("\
11868 Show the maximum number of target hardware breakpoints."), _("\
11869 Specify a negative limit for unlimited."),
11870 NULL
, NULL
, /* FIXME: i18n: The maximum
11871 number of target hardware
11872 breakpoints is %s. */
11873 &remote_set_cmdlist
, &remote_show_cmdlist
);
11875 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11876 &remote_address_size
, _("\
11877 Set the maximum size of the address (in bits) in a memory packet."), _("\
11878 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11880 NULL
, /* FIXME: i18n: */
11881 &setlist
, &showlist
);
11883 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11884 "X", "binary-download", 1);
11886 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11887 "vCont", "verbose-resume", 0);
11889 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11890 "QPassSignals", "pass-signals", 0);
11892 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11893 "QProgramSignals", "program-signals", 0);
11895 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11896 "qSymbol", "symbol-lookup", 0);
11898 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11899 "P", "set-register", 1);
11901 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11902 "p", "fetch-register", 1);
11904 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11905 "Z0", "software-breakpoint", 0);
11907 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11908 "Z1", "hardware-breakpoint", 0);
11910 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11911 "Z2", "write-watchpoint", 0);
11913 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11914 "Z3", "read-watchpoint", 0);
11916 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11917 "Z4", "access-watchpoint", 0);
11919 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11920 "qXfer:auxv:read", "read-aux-vector", 0);
11922 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11923 "qXfer:features:read", "target-features", 0);
11925 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11926 "qXfer:libraries:read", "library-info", 0);
11928 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11929 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11931 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11932 "qXfer:memory-map:read", "memory-map", 0);
11934 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11935 "qXfer:spu:read", "read-spu-object", 0);
11937 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11938 "qXfer:spu:write", "write-spu-object", 0);
11940 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11941 "qXfer:osdata:read", "osdata", 0);
11943 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11944 "qXfer:threads:read", "threads", 0);
11946 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11947 "qXfer:siginfo:read", "read-siginfo-object", 0);
11949 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11950 "qXfer:siginfo:write", "write-siginfo-object", 0);
11952 add_packet_config_cmd
11953 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11954 "qXfer:traceframe-info:read", "traceframe-info", 0);
11956 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11957 "qXfer:uib:read", "unwind-info-block", 0);
11959 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11960 "qGetTLSAddr", "get-thread-local-storage-address",
11963 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11964 "qGetTIBAddr", "get-thread-information-block-address",
11967 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11968 "bc", "reverse-continue", 0);
11970 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11971 "bs", "reverse-step", 0);
11973 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11974 "qSupported", "supported-packets", 0);
11976 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11977 "qSearch:memory", "search-memory", 0);
11979 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
11980 "qTStatus", "trace-status", 0);
11982 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11983 "vFile:open", "hostio-open", 0);
11985 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11986 "vFile:pread", "hostio-pread", 0);
11988 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11989 "vFile:pwrite", "hostio-pwrite", 0);
11991 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11992 "vFile:close", "hostio-close", 0);
11994 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11995 "vFile:unlink", "hostio-unlink", 0);
11997 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11998 "vFile:readlink", "hostio-readlink", 0);
12000 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12001 "vAttach", "attach", 0);
12003 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12006 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12007 "QStartNoAckMode", "noack", 0);
12009 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12010 "vKill", "kill", 0);
12012 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12013 "qAttached", "query-attached", 0);
12015 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12016 "ConditionalTracepoints",
12017 "conditional-tracepoints", 0);
12019 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12020 "ConditionalBreakpoints",
12021 "conditional-breakpoints", 0);
12023 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12024 "BreakpointCommands",
12025 "breakpoint-commands", 0);
12027 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12028 "FastTracepoints", "fast-tracepoints", 0);
12030 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12031 "TracepointSource", "TracepointSource", 0);
12033 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12034 "QAllow", "allow", 0);
12036 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12037 "StaticTracepoints", "static-tracepoints", 0);
12039 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12040 "InstallInTrace", "install-in-trace", 0);
12042 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12043 "qXfer:statictrace:read", "read-sdata-object", 0);
12045 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12046 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12048 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12049 "QDisableRandomization", "disable-randomization", 0);
12051 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12052 "QAgent", "agent", 0);
12054 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12055 "QTBuffer:size", "trace-buffer-size", 0);
12057 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12058 "Qbtrace:off", "disable-btrace", 0);
12060 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12061 "Qbtrace:bts", "enable-btrace", 0);
12063 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12064 "qXfer:btrace", "read-btrace", 0);
12066 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12067 Z sub-packet has its own set and show commands, but users may
12068 have sets to this variable in their .gdbinit files (or in their
12070 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12071 &remote_Z_packet_detect
, _("\
12072 Set use of remote protocol `Z' packets"), _("\
12073 Show use of remote protocol `Z' packets "), _("\
12074 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12076 set_remote_protocol_Z_packet_cmd
,
12077 show_remote_protocol_Z_packet_cmd
,
12078 /* FIXME: i18n: Use of remote protocol
12079 `Z' packets is %s. */
12080 &remote_set_cmdlist
, &remote_show_cmdlist
);
12082 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12083 Manipulate files on the remote system\n\
12084 Transfer files to and from the remote target system."),
12085 &remote_cmdlist
, "remote ",
12086 0 /* allow-unknown */, &cmdlist
);
12088 add_cmd ("put", class_files
, remote_put_command
,
12089 _("Copy a local file to the remote system."),
12092 add_cmd ("get", class_files
, remote_get_command
,
12093 _("Copy a remote file to the local system."),
12096 add_cmd ("delete", class_files
, remote_delete_command
,
12097 _("Delete a remote file."),
12100 remote_exec_file
= xstrdup ("");
12101 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12102 &remote_exec_file
, _("\
12103 Set the remote pathname for \"run\""), _("\
12104 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12105 &remote_set_cmdlist
, &remote_show_cmdlist
);
12107 add_setshow_boolean_cmd ("range-stepping", class_run
,
12108 &use_range_stepping
, _("\
12109 Enable or disable range stepping."), _("\
12110 Show whether target-assisted range stepping is enabled."), _("\
12111 If on, and the target supports it, when stepping a source line, GDB\n\
12112 tells the target to step the corresponding range of addresses itself instead\n\
12113 of issuing multiple single-steps. This speeds up source level\n\
12114 stepping. If off, GDB always issues single-steps, even if range\n\
12115 stepping is supported by the target. The default is on."),
12116 set_range_stepping
,
12117 show_range_stepping
,
12121 /* Eventually initialize fileio. See fileio.c */
12122 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12124 /* Take advantage of the fact that the LWP field is not used, to tag
12125 special ptids with it set to != 0. */
12126 magic_null_ptid
= ptid_build (42000, 1, -1);
12127 not_sent_ptid
= ptid_build (42000, 1, -2);
12128 any_thread_ptid
= ptid_build (42000, 1, 0);
12130 target_buf_size
= 2048;
12131 target_buf
= xmalloc (target_buf_size
);