1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.h"
50 #include "event-loop.h"
51 #include "event-top.h"
57 #include "gdbcore.h" /* for exec_bfd */
59 #include "remote-fileio.h"
60 #include "gdb/fileio.h"
62 #include "xml-support.h"
64 #include "memory-map.h"
66 #include "tracepoint.h"
72 /* Temp hacks for tracepoint encoding migration. */
73 static char *target_buf
;
74 static long target_buf_size
;
76 /* The size to align memory write packets, when practical. The protocol
77 does not guarantee any alignment, and gdb will generate short
78 writes and unaligned writes, but even as a best-effort attempt this
79 can improve bulk transfers. For instance, if a write is misaligned
80 relative to the target's data bus, the stub may need to make an extra
81 round trip fetching data from the target. This doesn't make a
82 huge difference, but it's easy to do, so we try to be helpful.
84 The alignment chosen is arbitrary; usually data bus width is
85 important here, not the possibly larger cache line size. */
86 enum { REMOTE_ALIGN_WRITES
= 16 };
88 /* Prototypes for local functions. */
89 static void async_cleanup_sigint_signal_handler (void *dummy
);
90 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
91 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
92 int forever
, int *is_notif
);
94 static void async_handle_remote_sigint (int);
95 static void async_handle_remote_sigint_twice (int);
97 static void remote_files_info (struct target_ops
*ignore
);
99 static void remote_prepare_to_store (struct target_ops
*self
,
100 struct regcache
*regcache
);
102 static void remote_open_1 (const char *, int, struct target_ops
*,
105 static void remote_close (struct target_ops
*self
);
107 static void remote_mourn (struct target_ops
*ops
);
109 static void extended_remote_restart (void);
111 static void extended_remote_mourn (struct target_ops
*);
113 static void remote_mourn_1 (struct target_ops
*);
115 static void remote_send (char **buf
, long *sizeof_buf_p
);
117 static int readchar (int timeout
);
119 static void remote_serial_write (const char *str
, int len
);
121 static void remote_kill (struct target_ops
*ops
);
123 static int remote_can_async_p (struct target_ops
*);
125 static int remote_is_async_p (struct target_ops
*);
127 static void remote_async (struct target_ops
*ops
,
128 void (*callback
) (enum inferior_event_type event_type
,
132 static void sync_remote_interrupt_twice (int signo
);
134 static void interrupt_query (void);
136 static void set_general_thread (struct ptid ptid
);
137 static void set_continue_thread (struct ptid ptid
);
139 static void get_offsets (void);
141 static void skip_frame (void);
143 static long read_frame (char **buf_p
, long *sizeof_buf
);
145 static int hexnumlen (ULONGEST num
);
147 static void init_remote_ops (void);
149 static void init_extended_remote_ops (void);
151 static void remote_stop (struct target_ops
*self
, ptid_t
);
153 static int stubhex (int ch
);
155 static int hexnumstr (char *, ULONGEST
);
157 static int hexnumnstr (char *, ULONGEST
, int);
159 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
161 static void print_packet (const char *);
163 static void compare_sections_command (char *, int);
165 static void packet_command (char *, int);
167 static int stub_unpack_int (char *buff
, int fieldlength
);
169 static ptid_t
remote_current_thread (ptid_t oldptid
);
171 static int putpkt_binary (const char *buf
, int cnt
);
173 static void check_binary_download (CORE_ADDR addr
);
175 struct packet_config
;
177 static void show_packet_config_cmd (struct packet_config
*config
);
179 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
181 struct cmd_list_element
*c
,
184 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
185 static ptid_t
read_ptid (char *buf
, char **obuf
);
187 static void remote_set_permissions (struct target_ops
*self
);
190 static int remote_get_trace_status (struct target_ops
*self
,
191 struct trace_status
*ts
);
193 static int remote_upload_tracepoints (struct target_ops
*self
,
194 struct uploaded_tp
**utpp
);
196 static int remote_upload_trace_state_variables (struct target_ops
*self
,
197 struct uploaded_tsv
**utsvp
);
199 static void remote_query_supported (void);
201 static void remote_check_symbols (void);
203 void _initialize_remote (void);
206 static void stop_reply_xfree (struct stop_reply
*);
207 static void remote_parse_stop_reply (char *, struct stop_reply
*);
208 static void push_stop_reply (struct stop_reply
*);
209 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
210 static int peek_stop_reply (ptid_t ptid
);
212 static void remote_async_inferior_event_handler (gdb_client_data
);
214 static void remote_terminal_ours (struct target_ops
*self
);
216 static int remote_read_description_p (struct target_ops
*target
);
218 static void remote_console_output (char *msg
);
220 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
222 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
224 static void remote_btrace_reset (void);
228 static struct cmd_list_element
*remote_cmdlist
;
230 /* For "set remote" and "show remote". */
232 static struct cmd_list_element
*remote_set_cmdlist
;
233 static struct cmd_list_element
*remote_show_cmdlist
;
235 /* Stub vCont actions support.
237 Each field is a boolean flag indicating whether the stub reports
238 support for the corresponding action. */
240 struct vCont_action_support
249 /* Controls whether GDB is willing to use range stepping. */
251 static int use_range_stepping
= 1;
253 #define OPAQUETHREADBYTES 8
255 /* a 64 bit opaque identifier */
256 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
258 /* About this many threadisds fit in a packet. */
260 #define MAXTHREADLISTRESULTS 32
262 /* Description of the remote protocol state for the currently
263 connected target. This is per-target state, and independent of the
264 selected architecture. */
268 /* A buffer to use for incoming packets, and its current size. The
269 buffer is grown dynamically for larger incoming packets.
270 Outgoing packets may also be constructed in this buffer.
271 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
272 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
277 /* True if we're going through initial connection setup (finding out
278 about the remote side's threads, relocating symbols, etc.). */
281 /* If we negotiated packet size explicitly (and thus can bypass
282 heuristics for the largest packet size that will not overflow
283 a buffer in the stub), this will be set to that packet size.
284 Otherwise zero, meaning to use the guessed size. */
285 long explicit_packet_size
;
287 /* remote_wait is normally called when the target is running and
288 waits for a stop reply packet. But sometimes we need to call it
289 when the target is already stopped. We can send a "?" packet
290 and have remote_wait read the response. Or, if we already have
291 the response, we can stash it in BUF and tell remote_wait to
292 skip calling getpkt. This flag is set when BUF contains a
293 stop reply packet and the target is not waiting. */
294 int cached_wait_status
;
296 /* True, if in no ack mode. That is, neither GDB nor the stub will
297 expect acks from each other. The connection is assumed to be
301 /* True if we're connected in extended remote mode. */
304 /* True if we resumed the target and we're waiting for the target to
305 stop. In the mean time, we can't start another command/query.
306 The remote server wouldn't be ready to process it, so we'd
307 timeout waiting for a reply that would never come and eventually
308 we'd close the connection. This can happen in asynchronous mode
309 because we allow GDB commands while the target is running. */
310 int waiting_for_stop_reply
;
312 /* The status of the stub support for the various vCont actions. */
313 struct vCont_action_support supports_vCont
;
315 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
316 responded to that. */
319 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
320 remote_open knows that we don't have a file open when the program
322 struct serial
*remote_desc
;
324 /* These are the threads which we last sent to the remote system. The
325 TID member will be -1 for all or -2 for not sent yet. */
326 ptid_t general_thread
;
327 ptid_t continue_thread
;
329 /* This is the traceframe which we last selected on the remote system.
330 It will be -1 if no traceframe is selected. */
331 int remote_traceframe_number
;
333 char *last_pass_packet
;
335 /* The last QProgramSignals packet sent to the target. We bypass
336 sending a new program signals list down to the target if the new
337 packet is exactly the same as the last we sent. IOW, we only let
338 the target know about program signals list changes. */
339 char *last_program_signals_packet
;
341 enum gdb_signal last_sent_signal
;
345 char *finished_object
;
346 char *finished_annex
;
347 ULONGEST finished_offset
;
349 /* Should we try the 'ThreadInfo' query packet?
351 This variable (NOT available to the user: auto-detect only!)
352 determines whether GDB will use the new, simpler "ThreadInfo"
353 query or the older, more complex syntax for thread queries.
354 This is an auto-detect variable (set to true at each connect,
355 and set to false when the target fails to recognize it). */
356 int use_threadinfo_query
;
357 int use_threadextra_query
;
359 void (*async_client_callback
) (enum inferior_event_type event_type
,
361 void *async_client_context
;
363 /* This is set to the data address of the access causing the target
364 to stop for a watchpoint. */
365 CORE_ADDR remote_watch_data_address
;
367 /* Whether the target stopped for a breakpoint/watchpoint. */
368 enum target_stop_reason stop_reason
;
370 threadref echo_nextthread
;
371 threadref nextthread
;
372 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
374 /* The state of remote notification. */
375 struct remote_notif_state
*notif_state
;
377 /* The branch trace configuration. */
378 struct btrace_config btrace_config
;
381 /* Private data that we'll store in (struct thread_info)->private. */
382 struct private_thread_info
389 free_private_thread_info (struct private_thread_info
*info
)
395 /* This data could be associated with a target, but we do not always
396 have access to the current target when we need it, so for now it is
397 static. This will be fine for as long as only one target is in use
399 static struct remote_state
*remote_state
;
401 static struct remote_state
*
402 get_remote_state_raw (void)
407 /* Allocate a new struct remote_state with xmalloc, initialize it, and
410 static struct remote_state
*
411 new_remote_state (void)
413 struct remote_state
*result
= XCNEW (struct remote_state
);
415 /* The default buffer size is unimportant; it will be expanded
416 whenever a larger buffer is needed. */
417 result
->buf_size
= 400;
418 result
->buf
= xmalloc (result
->buf_size
);
419 result
->remote_traceframe_number
= -1;
420 result
->last_sent_signal
= GDB_SIGNAL_0
;
425 /* Description of the remote protocol for a given architecture. */
429 long offset
; /* Offset into G packet. */
430 long regnum
; /* GDB's internal register number. */
431 LONGEST pnum
; /* Remote protocol register number. */
432 int in_g_packet
; /* Always part of G packet. */
433 /* long size in bytes; == register_size (target_gdbarch (), regnum);
435 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
439 struct remote_arch_state
441 /* Description of the remote protocol registers. */
442 long sizeof_g_packet
;
444 /* Description of the remote protocol registers indexed by REGNUM
445 (making an array gdbarch_num_regs in size). */
446 struct packet_reg
*regs
;
448 /* This is the size (in chars) of the first response to the ``g''
449 packet. It is used as a heuristic when determining the maximum
450 size of memory-read and memory-write packets. A target will
451 typically only reserve a buffer large enough to hold the ``g''
452 packet. The size does not include packet overhead (headers and
454 long actual_register_packet_size
;
456 /* This is the maximum size (in chars) of a non read/write packet.
457 It is also used as a cap on the size of read/write packets. */
458 long remote_packet_size
;
461 /* Utility: generate error from an incoming stub packet. */
463 trace_error (char *buf
)
466 return; /* not an error msg */
469 case '1': /* malformed packet error */
470 if (*++buf
== '0') /* general case: */
471 error (_("remote.c: error in outgoing packet."));
473 error (_("remote.c: error in outgoing packet at field #%ld."),
474 strtol (buf
, NULL
, 16));
476 error (_("Target returns error code '%s'."), buf
);
480 /* Utility: wait for reply from stub, while accepting "O" packets. */
482 remote_get_noisy_reply (char **buf_p
,
485 do /* Loop on reply from remote stub. */
489 QUIT
; /* Allow user to bail out with ^C. */
490 getpkt (buf_p
, sizeof_buf
, 0);
494 else if (startswith (buf
, "qRelocInsn:"))
497 CORE_ADDR from
, to
, org_to
;
499 int adjusted_size
= 0;
500 volatile struct gdb_exception ex
;
502 p
= buf
+ strlen ("qRelocInsn:");
503 pp
= unpack_varlen_hex (p
, &ul
);
505 error (_("invalid qRelocInsn packet: %s"), buf
);
509 unpack_varlen_hex (p
, &ul
);
514 TRY_CATCH (ex
, RETURN_MASK_ALL
)
516 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
520 adjusted_size
= to
- org_to
;
522 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
525 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
527 /* Propagate memory errors silently back to the target.
528 The stub may have limited the range of addresses we
529 can write to, for example. */
534 /* Something unexpectedly bad happened. Be verbose so
535 we can tell what, and propagate the error back to the
536 stub, so it doesn't get stuck waiting for a
538 exception_fprintf (gdb_stderr
, ex
,
539 _("warning: relocating instruction: "));
543 else if (buf
[0] == 'O' && buf
[1] != 'K')
544 remote_console_output (buf
+ 1); /* 'O' message from stub */
546 return buf
; /* Here's the actual reply. */
551 /* Handle for retreving the remote protocol data from gdbarch. */
552 static struct gdbarch_data
*remote_gdbarch_data_handle
;
554 static struct remote_arch_state
*
555 get_remote_arch_state (void)
557 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
560 /* Fetch the global remote target state. */
562 static struct remote_state
*
563 get_remote_state (void)
565 /* Make sure that the remote architecture state has been
566 initialized, because doing so might reallocate rs->buf. Any
567 function which calls getpkt also needs to be mindful of changes
568 to rs->buf, but this call limits the number of places which run
570 get_remote_arch_state ();
572 return get_remote_state_raw ();
576 compare_pnums (const void *lhs_
, const void *rhs_
)
578 const struct packet_reg
* const *lhs
= lhs_
;
579 const struct packet_reg
* const *rhs
= rhs_
;
581 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
583 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
590 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
592 int regnum
, num_remote_regs
, offset
;
593 struct packet_reg
**remote_regs
;
595 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
597 struct packet_reg
*r
= ®s
[regnum
];
599 if (register_size (gdbarch
, regnum
) == 0)
600 /* Do not try to fetch zero-sized (placeholder) registers. */
603 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
608 /* Define the g/G packet format as the contents of each register
609 with a remote protocol number, in order of ascending protocol
612 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
613 * sizeof (struct packet_reg
*));
614 for (num_remote_regs
= 0, regnum
= 0;
615 regnum
< gdbarch_num_regs (gdbarch
);
617 if (regs
[regnum
].pnum
!= -1)
618 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
620 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
623 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
625 remote_regs
[regnum
]->in_g_packet
= 1;
626 remote_regs
[regnum
]->offset
= offset
;
627 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
633 /* Given the architecture described by GDBARCH, return the remote
634 protocol register's number and the register's offset in the g/G
635 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
636 If the target does not have a mapping for REGNUM, return false,
637 otherwise, return true. */
640 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
641 int *pnum
, int *poffset
)
644 struct packet_reg
*regs
;
645 struct cleanup
*old_chain
;
647 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
649 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
650 old_chain
= make_cleanup (xfree
, regs
);
652 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
654 *pnum
= regs
[regnum
].pnum
;
655 *poffset
= regs
[regnum
].offset
;
657 do_cleanups (old_chain
);
663 init_remote_state (struct gdbarch
*gdbarch
)
665 struct remote_state
*rs
= get_remote_state_raw ();
666 struct remote_arch_state
*rsa
;
668 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
670 /* Use the architecture to build a regnum<->pnum table, which will be
671 1:1 unless a feature set specifies otherwise. */
672 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
673 gdbarch_num_regs (gdbarch
),
676 /* Record the maximum possible size of the g packet - it may turn out
678 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
680 /* Default maximum number of characters in a packet body. Many
681 remote stubs have a hardwired buffer size of 400 bytes
682 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
683 as the maximum packet-size to ensure that the packet and an extra
684 NUL character can always fit in the buffer. This stops GDB
685 trashing stubs that try to squeeze an extra NUL into what is
686 already a full buffer (As of 1999-12-04 that was most stubs). */
687 rsa
->remote_packet_size
= 400 - 1;
689 /* This one is filled in when a ``g'' packet is received. */
690 rsa
->actual_register_packet_size
= 0;
692 /* Should rsa->sizeof_g_packet needs more space than the
693 default, adjust the size accordingly. Remember that each byte is
694 encoded as two characters. 32 is the overhead for the packet
695 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
696 (``$NN:G...#NN'') is a better guess, the below has been padded a
698 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
699 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
701 /* Make sure that the packet buffer is plenty big enough for
702 this architecture. */
703 if (rs
->buf_size
< rsa
->remote_packet_size
)
705 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
706 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
712 /* Return the current allowed size of a remote packet. This is
713 inferred from the current architecture, and should be used to
714 limit the length of outgoing packets. */
716 get_remote_packet_size (void)
718 struct remote_state
*rs
= get_remote_state ();
719 struct remote_arch_state
*rsa
= get_remote_arch_state ();
721 if (rs
->explicit_packet_size
)
722 return rs
->explicit_packet_size
;
724 return rsa
->remote_packet_size
;
727 static struct packet_reg
*
728 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
730 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
734 struct packet_reg
*r
= &rsa
->regs
[regnum
];
736 gdb_assert (r
->regnum
== regnum
);
741 static struct packet_reg
*
742 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
746 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
748 struct packet_reg
*r
= &rsa
->regs
[i
];
756 static struct target_ops remote_ops
;
758 static struct target_ops extended_remote_ops
;
760 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
761 ``forever'' still use the normal timeout mechanism. This is
762 currently used by the ASYNC code to guarentee that target reads
763 during the initial connect always time-out. Once getpkt has been
764 modified to return a timeout indication and, in turn
765 remote_wait()/wait_for_inferior() have gained a timeout parameter
767 static int wait_forever_enabled_p
= 1;
769 /* Allow the user to specify what sequence to send to the remote
770 when he requests a program interruption: Although ^C is usually
771 what remote systems expect (this is the default, here), it is
772 sometimes preferable to send a break. On other systems such
773 as the Linux kernel, a break followed by g, which is Magic SysRq g
774 is required in order to interrupt the execution. */
775 const char interrupt_sequence_control_c
[] = "Ctrl-C";
776 const char interrupt_sequence_break
[] = "BREAK";
777 const char interrupt_sequence_break_g
[] = "BREAK-g";
778 static const char *const interrupt_sequence_modes
[] =
780 interrupt_sequence_control_c
,
781 interrupt_sequence_break
,
782 interrupt_sequence_break_g
,
785 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
788 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
789 struct cmd_list_element
*c
,
792 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
793 fprintf_filtered (file
,
794 _("Send the ASCII ETX character (Ctrl-c) "
795 "to the remote target to interrupt the "
796 "execution of the program.\n"));
797 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
798 fprintf_filtered (file
,
799 _("send a break signal to the remote target "
800 "to interrupt the execution of the program.\n"));
801 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
802 fprintf_filtered (file
,
803 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
804 "the remote target to interrupt the execution "
805 "of Linux kernel.\n"));
807 internal_error (__FILE__
, __LINE__
,
808 _("Invalid value for interrupt_sequence_mode: %s."),
809 interrupt_sequence_mode
);
812 /* This boolean variable specifies whether interrupt_sequence is sent
813 to the remote target when gdb connects to it.
814 This is mostly needed when you debug the Linux kernel: The Linux kernel
815 expects BREAK g which is Magic SysRq g for connecting gdb. */
816 static int interrupt_on_connect
= 0;
818 /* This variable is used to implement the "set/show remotebreak" commands.
819 Since these commands are now deprecated in favor of "set/show remote
820 interrupt-sequence", it no longer has any effect on the code. */
821 static int remote_break
;
824 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
827 interrupt_sequence_mode
= interrupt_sequence_break
;
829 interrupt_sequence_mode
= interrupt_sequence_control_c
;
833 show_remotebreak (struct ui_file
*file
, int from_tty
,
834 struct cmd_list_element
*c
,
839 /* This variable sets the number of bits in an address that are to be
840 sent in a memory ("M" or "m") packet. Normally, after stripping
841 leading zeros, the entire address would be sent. This variable
842 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
843 initial implementation of remote.c restricted the address sent in
844 memory packets to ``host::sizeof long'' bytes - (typically 32
845 bits). Consequently, for 64 bit targets, the upper 32 bits of an
846 address was never sent. Since fixing this bug may cause a break in
847 some remote targets this variable is principly provided to
848 facilitate backward compatibility. */
850 static unsigned int remote_address_size
;
852 /* Temporary to track who currently owns the terminal. See
853 remote_terminal_* for more details. */
855 static int remote_async_terminal_ours_p
;
857 /* The executable file to use for "run" on the remote side. */
859 static char *remote_exec_file
= "";
862 /* User configurable variables for the number of characters in a
863 memory read/write packet. MIN (rsa->remote_packet_size,
864 rsa->sizeof_g_packet) is the default. Some targets need smaller
865 values (fifo overruns, et.al.) and some users need larger values
866 (speed up transfers). The variables ``preferred_*'' (the user
867 request), ``current_*'' (what was actually set) and ``forced_*''
868 (Positive - a soft limit, negative - a hard limit). */
870 struct memory_packet_config
877 /* Compute the current size of a read/write packet. Since this makes
878 use of ``actual_register_packet_size'' the computation is dynamic. */
881 get_memory_packet_size (struct memory_packet_config
*config
)
883 struct remote_state
*rs
= get_remote_state ();
884 struct remote_arch_state
*rsa
= get_remote_arch_state ();
886 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
887 law?) that some hosts don't cope very well with large alloca()
888 calls. Eventually the alloca() code will be replaced by calls to
889 xmalloc() and make_cleanups() allowing this restriction to either
890 be lifted or removed. */
891 #ifndef MAX_REMOTE_PACKET_SIZE
892 #define MAX_REMOTE_PACKET_SIZE 16384
894 /* NOTE: 20 ensures we can write at least one byte. */
895 #ifndef MIN_REMOTE_PACKET_SIZE
896 #define MIN_REMOTE_PACKET_SIZE 20
901 if (config
->size
<= 0)
902 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
904 what_they_get
= config
->size
;
908 what_they_get
= get_remote_packet_size ();
909 /* Limit the packet to the size specified by the user. */
911 && what_they_get
> config
->size
)
912 what_they_get
= config
->size
;
914 /* Limit it to the size of the targets ``g'' response unless we have
915 permission from the stub to use a larger packet size. */
916 if (rs
->explicit_packet_size
== 0
917 && rsa
->actual_register_packet_size
> 0
918 && what_they_get
> rsa
->actual_register_packet_size
)
919 what_they_get
= rsa
->actual_register_packet_size
;
921 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
922 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
923 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
924 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
926 /* Make sure there is room in the global buffer for this packet
927 (including its trailing NUL byte). */
928 if (rs
->buf_size
< what_they_get
+ 1)
930 rs
->buf_size
= 2 * what_they_get
;
931 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
934 return what_they_get
;
937 /* Update the size of a read/write packet. If they user wants
938 something really big then do a sanity check. */
941 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
943 int fixed_p
= config
->fixed_p
;
944 long size
= config
->size
;
947 error (_("Argument required (integer, `fixed' or `limited')."));
948 else if (strcmp (args
, "hard") == 0
949 || strcmp (args
, "fixed") == 0)
951 else if (strcmp (args
, "soft") == 0
952 || strcmp (args
, "limit") == 0)
958 size
= strtoul (args
, &end
, 0);
960 error (_("Invalid %s (bad syntax)."), config
->name
);
962 /* Instead of explicitly capping the size of a packet to
963 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
964 instead allowed to set the size to something arbitrarily
966 if (size
> MAX_REMOTE_PACKET_SIZE
)
967 error (_("Invalid %s (too large)."), config
->name
);
971 if (fixed_p
&& !config
->fixed_p
)
973 if (! query (_("The target may not be able to correctly handle a %s\n"
974 "of %ld bytes. Change the packet size? "),
976 error (_("Packet size not changed."));
978 /* Update the config. */
979 config
->fixed_p
= fixed_p
;
984 show_memory_packet_size (struct memory_packet_config
*config
)
986 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
988 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
989 get_memory_packet_size (config
));
991 printf_filtered (_("Packets are limited to %ld bytes.\n"),
992 get_memory_packet_size (config
));
995 static struct memory_packet_config memory_write_packet_config
=
997 "memory-write-packet-size",
1001 set_memory_write_packet_size (char *args
, int from_tty
)
1003 set_memory_packet_size (args
, &memory_write_packet_config
);
1007 show_memory_write_packet_size (char *args
, int from_tty
)
1009 show_memory_packet_size (&memory_write_packet_config
);
1013 get_memory_write_packet_size (void)
1015 return get_memory_packet_size (&memory_write_packet_config
);
1018 static struct memory_packet_config memory_read_packet_config
=
1020 "memory-read-packet-size",
1024 set_memory_read_packet_size (char *args
, int from_tty
)
1026 set_memory_packet_size (args
, &memory_read_packet_config
);
1030 show_memory_read_packet_size (char *args
, int from_tty
)
1032 show_memory_packet_size (&memory_read_packet_config
);
1036 get_memory_read_packet_size (void)
1038 long size
= get_memory_packet_size (&memory_read_packet_config
);
1040 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1041 extra buffer size argument before the memory read size can be
1042 increased beyond this. */
1043 if (size
> get_remote_packet_size ())
1044 size
= get_remote_packet_size ();
1049 /* Generic configuration support for packets the stub optionally
1050 supports. Allows the user to specify the use of the packet as well
1051 as allowing GDB to auto-detect support in the remote stub. */
1055 PACKET_SUPPORT_UNKNOWN
= 0,
1060 struct packet_config
1065 /* If auto, GDB auto-detects support for this packet or feature,
1066 either through qSupported, or by trying the packet and looking
1067 at the response. If true, GDB assumes the target supports this
1068 packet. If false, the packet is disabled. Configs that don't
1069 have an associated command always have this set to auto. */
1070 enum auto_boolean detect
;
1072 /* Does the target support this packet? */
1073 enum packet_support support
;
1076 /* Analyze a packet's return value and update the packet config
1086 static enum packet_support
packet_config_support (struct packet_config
*config
);
1087 static enum packet_support
packet_support (int packet
);
1090 show_packet_config_cmd (struct packet_config
*config
)
1092 char *support
= "internal-error";
1094 switch (packet_config_support (config
))
1097 support
= "enabled";
1099 case PACKET_DISABLE
:
1100 support
= "disabled";
1102 case PACKET_SUPPORT_UNKNOWN
:
1103 support
= "unknown";
1106 switch (config
->detect
)
1108 case AUTO_BOOLEAN_AUTO
:
1109 printf_filtered (_("Support for the `%s' packet "
1110 "is auto-detected, currently %s.\n"),
1111 config
->name
, support
);
1113 case AUTO_BOOLEAN_TRUE
:
1114 case AUTO_BOOLEAN_FALSE
:
1115 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1116 config
->name
, support
);
1122 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1123 const char *title
, int legacy
)
1129 config
->name
= name
;
1130 config
->title
= title
;
1131 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1133 show_doc
= xstrprintf ("Show current use of remote "
1134 "protocol `%s' (%s) packet",
1136 /* set/show TITLE-packet {auto,on,off} */
1137 cmd_name
= xstrprintf ("%s-packet", title
);
1138 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1139 &config
->detect
, set_doc
,
1140 show_doc
, NULL
, /* help_doc */
1142 show_remote_protocol_packet_cmd
,
1143 &remote_set_cmdlist
, &remote_show_cmdlist
);
1144 /* The command code copies the documentation strings. */
1147 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1152 legacy_name
= xstrprintf ("%s-packet", name
);
1153 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1154 &remote_set_cmdlist
);
1155 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1156 &remote_show_cmdlist
);
1160 static enum packet_result
1161 packet_check_result (const char *buf
)
1165 /* The stub recognized the packet request. Check that the
1166 operation succeeded. */
1168 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1170 /* "Enn" - definitly an error. */
1171 return PACKET_ERROR
;
1173 /* Always treat "E." as an error. This will be used for
1174 more verbose error messages, such as E.memtypes. */
1175 if (buf
[0] == 'E' && buf
[1] == '.')
1176 return PACKET_ERROR
;
1178 /* The packet may or may not be OK. Just assume it is. */
1182 /* The stub does not support the packet. */
1183 return PACKET_UNKNOWN
;
1186 static enum packet_result
1187 packet_ok (const char *buf
, struct packet_config
*config
)
1189 enum packet_result result
;
1191 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1192 && config
->support
== PACKET_DISABLE
)
1193 internal_error (__FILE__
, __LINE__
,
1194 _("packet_ok: attempt to use a disabled packet"));
1196 result
= packet_check_result (buf
);
1201 /* The stub recognized the packet request. */
1202 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1205 fprintf_unfiltered (gdb_stdlog
,
1206 "Packet %s (%s) is supported\n",
1207 config
->name
, config
->title
);
1208 config
->support
= PACKET_ENABLE
;
1211 case PACKET_UNKNOWN
:
1212 /* The stub does not support the packet. */
1213 if (config
->detect
== AUTO_BOOLEAN_AUTO
1214 && config
->support
== PACKET_ENABLE
)
1216 /* If the stub previously indicated that the packet was
1217 supported then there is a protocol error. */
1218 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1219 config
->name
, config
->title
);
1221 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1223 /* The user set it wrong. */
1224 error (_("Enabled packet %s (%s) not recognized by stub"),
1225 config
->name
, config
->title
);
1229 fprintf_unfiltered (gdb_stdlog
,
1230 "Packet %s (%s) is NOT supported\n",
1231 config
->name
, config
->title
);
1232 config
->support
= PACKET_DISABLE
;
1252 PACKET_vFile_pwrite
,
1254 PACKET_vFile_unlink
,
1255 PACKET_vFile_readlink
,
1257 PACKET_qXfer_features
,
1258 PACKET_qXfer_libraries
,
1259 PACKET_qXfer_libraries_svr4
,
1260 PACKET_qXfer_memory_map
,
1261 PACKET_qXfer_spu_read
,
1262 PACKET_qXfer_spu_write
,
1263 PACKET_qXfer_osdata
,
1264 PACKET_qXfer_threads
,
1265 PACKET_qXfer_statictrace_read
,
1266 PACKET_qXfer_traceframe_info
,
1272 PACKET_QPassSignals
,
1273 PACKET_QProgramSignals
,
1275 PACKET_qSearch_memory
,
1278 PACKET_QStartNoAckMode
,
1280 PACKET_qXfer_siginfo_read
,
1281 PACKET_qXfer_siginfo_write
,
1284 /* Support for conditional tracepoints. */
1285 PACKET_ConditionalTracepoints
,
1287 /* Support for target-side breakpoint conditions. */
1288 PACKET_ConditionalBreakpoints
,
1290 /* Support for target-side breakpoint commands. */
1291 PACKET_BreakpointCommands
,
1293 /* Support for fast tracepoints. */
1294 PACKET_FastTracepoints
,
1296 /* Support for static tracepoints. */
1297 PACKET_StaticTracepoints
,
1299 /* Support for installing tracepoints while a trace experiment is
1301 PACKET_InstallInTrace
,
1305 PACKET_TracepointSource
,
1308 PACKET_QDisableRandomization
,
1310 PACKET_QTBuffer_size
,
1313 PACKET_qXfer_btrace
,
1315 /* Support for the QNonStop packet. */
1318 /* Support for multi-process extensions. */
1319 PACKET_multiprocess_feature
,
1321 /* Support for enabling and disabling tracepoints while a trace
1322 experiment is running. */
1323 PACKET_EnableDisableTracepoints_feature
,
1325 /* Support for collecting strings using the tracenz bytecode. */
1326 PACKET_tracenz_feature
,
1328 /* Support for continuing to run a trace experiment while GDB is
1330 PACKET_DisconnectedTracing_feature
,
1332 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1333 PACKET_augmented_libraries_svr4_read_feature
,
1335 /* Support for the qXfer:btrace-conf:read packet. */
1336 PACKET_qXfer_btrace_conf
,
1338 /* Support for the Qbtrace-conf:bts:size packet. */
1339 PACKET_Qbtrace_conf_bts_size
,
1341 /* Support for swbreak+ feature. */
1342 PACKET_swbreak_feature
,
1344 /* Support for hwbreak+ feature. */
1345 PACKET_hwbreak_feature
,
1350 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1352 /* Returns the packet's corresponding "set remote foo-packet" command
1353 state. See struct packet_config for more details. */
1355 static enum auto_boolean
1356 packet_set_cmd_state (int packet
)
1358 return remote_protocol_packets
[packet
].detect
;
1361 /* Returns whether a given packet or feature is supported. This takes
1362 into account the state of the corresponding "set remote foo-packet"
1363 command, which may be used to bypass auto-detection. */
1365 static enum packet_support
1366 packet_config_support (struct packet_config
*config
)
1368 switch (config
->detect
)
1370 case AUTO_BOOLEAN_TRUE
:
1371 return PACKET_ENABLE
;
1372 case AUTO_BOOLEAN_FALSE
:
1373 return PACKET_DISABLE
;
1374 case AUTO_BOOLEAN_AUTO
:
1375 return config
->support
;
1377 gdb_assert_not_reached (_("bad switch"));
1381 /* Same as packet_config_support, but takes the packet's enum value as
1384 static enum packet_support
1385 packet_support (int packet
)
1387 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1389 return packet_config_support (config
);
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
++)
1437 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1441 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1442 struct cmd_list_element
*c
,
1447 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1449 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1453 /* Returns true if the multi-process extensions are in effect. */
1456 remote_multi_process_p (struct remote_state
*rs
)
1458 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1461 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1462 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1463 static struct async_signal_handler
*async_sigint_remote_token
;
1466 /* Asynchronous signal handle registered as event loop source for
1467 when we have pending events ready to be passed to the core. */
1469 static struct async_event_handler
*remote_async_inferior_event_token
;
1473 static ptid_t magic_null_ptid
;
1474 static ptid_t not_sent_ptid
;
1475 static ptid_t any_thread_ptid
;
1477 /* Find out if the stub attached to PID (and hence GDB should offer to
1478 detach instead of killing it when bailing out). */
1481 remote_query_attached (int pid
)
1483 struct remote_state
*rs
= get_remote_state ();
1484 size_t size
= get_remote_packet_size ();
1486 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1489 if (remote_multi_process_p (rs
))
1490 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1492 xsnprintf (rs
->buf
, size
, "qAttached");
1495 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1497 switch (packet_ok (rs
->buf
,
1498 &remote_protocol_packets
[PACKET_qAttached
]))
1501 if (strcmp (rs
->buf
, "1") == 0)
1505 warning (_("Remote failure reply: %s"), rs
->buf
);
1507 case PACKET_UNKNOWN
:
1514 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1515 has been invented by GDB, instead of reported by the target. Since
1516 we can be connected to a remote system before before knowing about
1517 any inferior, mark the target with execution when we find the first
1518 inferior. If ATTACHED is 1, then we had just attached to this
1519 inferior. If it is 0, then we just created this inferior. If it
1520 is -1, then try querying the remote stub to find out if it had
1521 attached to the inferior or not. */
1523 static struct inferior
*
1524 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1526 struct inferior
*inf
;
1528 /* Check whether this process we're learning about is to be
1529 considered attached, or if is to be considered to have been
1530 spawned by the stub. */
1532 attached
= remote_query_attached (pid
);
1534 if (gdbarch_has_global_solist (target_gdbarch ()))
1536 /* If the target shares code across all inferiors, then every
1537 attach adds a new inferior. */
1538 inf
= add_inferior (pid
);
1540 /* ... and every inferior is bound to the same program space.
1541 However, each inferior may still have its own address
1543 inf
->aspace
= maybe_new_address_space ();
1544 inf
->pspace
= current_program_space
;
1548 /* In the traditional debugging scenario, there's a 1-1 match
1549 between program/address spaces. We simply bind the inferior
1550 to the program space's address space. */
1551 inf
= current_inferior ();
1552 inferior_appeared (inf
, pid
);
1555 inf
->attach_flag
= attached
;
1556 inf
->fake_pid_p
= fake_pid_p
;
1561 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1562 according to RUNNING. */
1565 remote_add_thread (ptid_t ptid
, int running
)
1567 struct remote_state
*rs
= get_remote_state ();
1569 /* GDB historically didn't pull threads in the initial connection
1570 setup. If the remote target doesn't even have a concept of
1571 threads (e.g., a bare-metal target), even if internally we
1572 consider that a single-threaded target, mentioning a new thread
1573 might be confusing to the user. Be silent then, preserving the
1574 age old behavior. */
1575 if (rs
->starting_up
)
1576 add_thread_silent (ptid
);
1580 set_executing (ptid
, running
);
1581 set_running (ptid
, running
);
1584 /* Come here when we learn about a thread id from the remote target.
1585 It may be the first time we hear about such thread, so take the
1586 opportunity to add it to GDB's thread list. In case this is the
1587 first time we're noticing its corresponding inferior, add it to
1588 GDB's inferior list as well. */
1591 remote_notice_new_inferior (ptid_t currthread
, int running
)
1593 /* If this is a new thread, add it to GDB's thread list.
1594 If we leave it up to WFI to do this, bad things will happen. */
1596 if (in_thread_list (currthread
) && is_exited (currthread
))
1598 /* We're seeing an event on a thread id we knew had exited.
1599 This has to be a new thread reusing the old id. Add it. */
1600 remote_add_thread (currthread
, running
);
1604 if (!in_thread_list (currthread
))
1606 struct inferior
*inf
= NULL
;
1607 int pid
= ptid_get_pid (currthread
);
1609 if (ptid_is_pid (inferior_ptid
)
1610 && pid
== ptid_get_pid (inferior_ptid
))
1612 /* inferior_ptid has no thread member yet. This can happen
1613 with the vAttach -> remote_wait,"TAAthread:" path if the
1614 stub doesn't support qC. This is the first stop reported
1615 after an attach, so this is the main thread. Update the
1616 ptid in the thread list. */
1617 if (in_thread_list (pid_to_ptid (pid
)))
1618 thread_change_ptid (inferior_ptid
, currthread
);
1621 remote_add_thread (currthread
, running
);
1622 inferior_ptid
= currthread
;
1627 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1629 /* inferior_ptid is not set yet. This can happen with the
1630 vRun -> remote_wait,"TAAthread:" path if the stub
1631 doesn't support qC. This is the first stop reported
1632 after an attach, so this is the main thread. Update the
1633 ptid in the thread list. */
1634 thread_change_ptid (inferior_ptid
, currthread
);
1638 /* When connecting to a target remote, or to a target
1639 extended-remote which already was debugging an inferior, we
1640 may not know about it yet. Add it before adding its child
1641 thread, so notifications are emitted in a sensible order. */
1642 if (!in_inferior_list (ptid_get_pid (currthread
)))
1644 struct remote_state
*rs
= get_remote_state ();
1645 int fake_pid_p
= !remote_multi_process_p (rs
);
1647 inf
= remote_add_inferior (fake_pid_p
,
1648 ptid_get_pid (currthread
), -1);
1651 /* This is really a new thread. Add it. */
1652 remote_add_thread (currthread
, running
);
1654 /* If we found a new inferior, let the common code do whatever
1655 it needs to with it (e.g., read shared libraries, insert
1656 breakpoints), unless we're just setting up an all-stop
1660 struct remote_state
*rs
= get_remote_state ();
1662 if (non_stop
|| !rs
->starting_up
)
1663 notice_new_inferior (currthread
, running
, 0);
1668 /* Return the private thread data, creating it if necessary. */
1670 static struct private_thread_info
*
1671 demand_private_info (ptid_t ptid
)
1673 struct thread_info
*info
= find_thread_ptid (ptid
);
1679 info
->priv
= xmalloc (sizeof (*(info
->priv
)));
1680 info
->private_dtor
= free_private_thread_info
;
1681 info
->priv
->core
= -1;
1682 info
->priv
->extra
= 0;
1688 /* Call this function as a result of
1689 1) A halt indication (T packet) containing a thread id
1690 2) A direct query of currthread
1691 3) Successful execution of set thread */
1694 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1696 rs
->general_thread
= currthread
;
1699 /* If 'QPassSignals' is supported, tell the remote stub what signals
1700 it can simply pass through to the inferior without reporting. */
1703 remote_pass_signals (struct target_ops
*self
,
1704 int numsigs
, unsigned char *pass_signals
)
1706 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1708 char *pass_packet
, *p
;
1710 struct remote_state
*rs
= get_remote_state ();
1712 gdb_assert (numsigs
< 256);
1713 for (i
= 0; i
< numsigs
; i
++)
1715 if (pass_signals
[i
])
1718 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1719 strcpy (pass_packet
, "QPassSignals:");
1720 p
= pass_packet
+ strlen (pass_packet
);
1721 for (i
= 0; i
< numsigs
; i
++)
1723 if (pass_signals
[i
])
1726 *p
++ = tohex (i
>> 4);
1727 *p
++ = tohex (i
& 15);
1736 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1738 putpkt (pass_packet
);
1739 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1740 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1741 if (rs
->last_pass_packet
)
1742 xfree (rs
->last_pass_packet
);
1743 rs
->last_pass_packet
= pass_packet
;
1746 xfree (pass_packet
);
1750 /* If 'QProgramSignals' is supported, tell the remote stub what
1751 signals it should pass through to the inferior when detaching. */
1754 remote_program_signals (struct target_ops
*self
,
1755 int numsigs
, unsigned char *signals
)
1757 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
1761 struct remote_state
*rs
= get_remote_state ();
1763 gdb_assert (numsigs
< 256);
1764 for (i
= 0; i
< numsigs
; i
++)
1769 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1770 strcpy (packet
, "QProgramSignals:");
1771 p
= packet
+ strlen (packet
);
1772 for (i
= 0; i
< numsigs
; i
++)
1774 if (signal_pass_state (i
))
1777 *p
++ = tohex (i
>> 4);
1778 *p
++ = tohex (i
& 15);
1787 if (!rs
->last_program_signals_packet
1788 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1791 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1792 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1793 xfree (rs
->last_program_signals_packet
);
1794 rs
->last_program_signals_packet
= packet
;
1801 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1802 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1803 thread. If GEN is set, set the general thread, if not, then set
1804 the step/continue thread. */
1806 set_thread (struct ptid ptid
, int gen
)
1808 struct remote_state
*rs
= get_remote_state ();
1809 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1810 char *buf
= rs
->buf
;
1811 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1813 if (ptid_equal (state
, ptid
))
1817 *buf
++ = gen
? 'g' : 'c';
1818 if (ptid_equal (ptid
, magic_null_ptid
))
1819 xsnprintf (buf
, endbuf
- buf
, "0");
1820 else if (ptid_equal (ptid
, any_thread_ptid
))
1821 xsnprintf (buf
, endbuf
- buf
, "0");
1822 else if (ptid_equal (ptid
, minus_one_ptid
))
1823 xsnprintf (buf
, endbuf
- buf
, "-1");
1825 write_ptid (buf
, endbuf
, ptid
);
1827 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1829 rs
->general_thread
= ptid
;
1831 rs
->continue_thread
= ptid
;
1835 set_general_thread (struct ptid ptid
)
1837 set_thread (ptid
, 1);
1841 set_continue_thread (struct ptid ptid
)
1843 set_thread (ptid
, 0);
1846 /* Change the remote current process. Which thread within the process
1847 ends up selected isn't important, as long as it is the same process
1848 as what INFERIOR_PTID points to.
1850 This comes from that fact that there is no explicit notion of
1851 "selected process" in the protocol. The selected process for
1852 general operations is the process the selected general thread
1856 set_general_process (void)
1858 struct remote_state
*rs
= get_remote_state ();
1860 /* If the remote can't handle multiple processes, don't bother. */
1861 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1864 /* We only need to change the remote current thread if it's pointing
1865 at some other process. */
1866 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1867 set_general_thread (inferior_ptid
);
1871 /* Return nonzero if this is the main thread that we made up ourselves
1872 to model non-threaded targets as single-threaded. */
1875 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
1877 struct remote_state
*rs
= get_remote_state ();
1880 if (ptid_equal (ptid
, magic_null_ptid
))
1881 /* The main thread is always alive. */
1884 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
1885 /* The main thread is always alive. This can happen after a
1886 vAttach, if the remote side doesn't support
1893 /* Return nonzero if the thread PTID is still alive on the remote
1897 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1899 struct remote_state
*rs
= get_remote_state ();
1902 /* Check if this is a thread that we made up ourselves to model
1903 non-threaded targets as single-threaded. */
1904 if (remote_thread_always_alive (ops
, ptid
))
1908 endp
= rs
->buf
+ get_remote_packet_size ();
1911 write_ptid (p
, endp
, ptid
);
1914 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1915 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1918 /* About these extended threadlist and threadinfo packets. They are
1919 variable length packets but, the fields within them are often fixed
1920 length. They are redundent enough to send over UDP as is the
1921 remote protocol in general. There is a matching unit test module
1924 /* WARNING: This threadref data structure comes from the remote O.S.,
1925 libstub protocol encoding, and remote.c. It is not particularly
1928 /* Right now, the internal structure is int. We want it to be bigger.
1929 Plan to fix this. */
1931 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1933 /* gdb_ext_thread_info is an internal GDB data structure which is
1934 equivalent to the reply of the remote threadinfo packet. */
1936 struct gdb_ext_thread_info
1938 threadref threadid
; /* External form of thread reference. */
1939 int active
; /* Has state interesting to GDB?
1941 char display
[256]; /* Brief state display, name,
1942 blocked/suspended. */
1943 char shortname
[32]; /* To be used to name threads. */
1944 char more_display
[256]; /* Long info, statistics, queue depth,
1948 /* The volume of remote transfers can be limited by submitting
1949 a mask containing bits specifying the desired information.
1950 Use a union of these values as the 'selection' parameter to
1951 get_thread_info. FIXME: Make these TAG names more thread specific. */
1953 #define TAG_THREADID 1
1954 #define TAG_EXISTS 2
1955 #define TAG_DISPLAY 4
1956 #define TAG_THREADNAME 8
1957 #define TAG_MOREDISPLAY 16
1959 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1961 static char *unpack_nibble (char *buf
, int *val
);
1963 static char *unpack_byte (char *buf
, int *value
);
1965 static char *pack_int (char *buf
, int value
);
1967 static char *unpack_int (char *buf
, int *value
);
1969 static char *unpack_string (char *src
, char *dest
, int length
);
1971 static char *pack_threadid (char *pkt
, threadref
*id
);
1973 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1975 void int_to_threadref (threadref
*id
, int value
);
1977 static int threadref_to_int (threadref
*ref
);
1979 static void copy_threadref (threadref
*dest
, threadref
*src
);
1981 static int threadmatch (threadref
*dest
, threadref
*src
);
1983 static char *pack_threadinfo_request (char *pkt
, int mode
,
1986 static int remote_unpack_thread_info_response (char *pkt
,
1987 threadref
*expectedref
,
1988 struct gdb_ext_thread_info
1992 static int remote_get_threadinfo (threadref
*threadid
,
1993 int fieldset
, /*TAG mask */
1994 struct gdb_ext_thread_info
*info
);
1996 static char *pack_threadlist_request (char *pkt
, int startflag
,
1998 threadref
*nextthread
);
2000 static int parse_threadlist_response (char *pkt
,
2002 threadref
*original_echo
,
2003 threadref
*resultlist
,
2006 static int remote_get_threadlist (int startflag
,
2007 threadref
*nextthread
,
2011 threadref
*threadlist
);
2013 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2015 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2016 void *context
, int looplimit
);
2018 static int remote_newthread_step (threadref
*ref
, void *context
);
2021 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2022 buffer we're allowed to write to. Returns
2023 BUF+CHARACTERS_WRITTEN. */
2026 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2029 struct remote_state
*rs
= get_remote_state ();
2031 if (remote_multi_process_p (rs
))
2033 pid
= ptid_get_pid (ptid
);
2035 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2037 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2039 tid
= ptid_get_lwp (ptid
);
2041 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2043 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2048 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2049 passed the last parsed char. Returns null_ptid on error. */
2052 read_ptid (char *buf
, char **obuf
)
2056 ULONGEST pid
= 0, tid
= 0;
2060 /* Multi-process ptid. */
2061 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2063 error (_("invalid remote ptid: %s"), p
);
2066 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2069 return ptid_build (pid
, tid
, 0);
2072 /* No multi-process. Just a tid. */
2073 pp
= unpack_varlen_hex (p
, &tid
);
2075 /* Since the stub is not sending a process id, then default to
2076 what's in inferior_ptid, unless it's null at this point. If so,
2077 then since there's no way to know the pid of the reported
2078 threads, use the magic number. */
2079 if (ptid_equal (inferior_ptid
, null_ptid
))
2080 pid
= ptid_get_pid (magic_null_ptid
);
2082 pid
= ptid_get_pid (inferior_ptid
);
2086 return ptid_build (pid
, tid
, 0);
2092 if (ch
>= 'a' && ch
<= 'f')
2093 return ch
- 'a' + 10;
2094 if (ch
>= '0' && ch
<= '9')
2096 if (ch
>= 'A' && ch
<= 'F')
2097 return ch
- 'A' + 10;
2102 stub_unpack_int (char *buff
, int fieldlength
)
2109 nibble
= stubhex (*buff
++);
2113 retval
= retval
<< 4;
2119 unpack_nibble (char *buf
, int *val
)
2121 *val
= fromhex (*buf
++);
2126 unpack_byte (char *buf
, int *value
)
2128 *value
= stub_unpack_int (buf
, 2);
2133 pack_int (char *buf
, int value
)
2135 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2136 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2137 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2138 buf
= pack_hex_byte (buf
, (value
& 0xff));
2143 unpack_int (char *buf
, int *value
)
2145 *value
= stub_unpack_int (buf
, 8);
2149 #if 0 /* Currently unused, uncomment when needed. */
2150 static char *pack_string (char *pkt
, char *string
);
2153 pack_string (char *pkt
, char *string
)
2158 len
= strlen (string
);
2160 len
= 200; /* Bigger than most GDB packets, junk??? */
2161 pkt
= pack_hex_byte (pkt
, len
);
2165 if ((ch
== '\0') || (ch
== '#'))
2166 ch
= '*'; /* Protect encapsulation. */
2171 #endif /* 0 (unused) */
2174 unpack_string (char *src
, char *dest
, int length
)
2183 pack_threadid (char *pkt
, threadref
*id
)
2186 unsigned char *altid
;
2188 altid
= (unsigned char *) id
;
2189 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2191 pkt
= pack_hex_byte (pkt
, *altid
++);
2197 unpack_threadid (char *inbuf
, threadref
*id
)
2200 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2203 altref
= (char *) id
;
2205 while (inbuf
< limit
)
2207 x
= stubhex (*inbuf
++);
2208 y
= stubhex (*inbuf
++);
2209 *altref
++ = (x
<< 4) | y
;
2214 /* Externally, threadrefs are 64 bits but internally, they are still
2215 ints. This is due to a mismatch of specifications. We would like
2216 to use 64bit thread references internally. This is an adapter
2220 int_to_threadref (threadref
*id
, int value
)
2222 unsigned char *scan
;
2224 scan
= (unsigned char *) id
;
2230 *scan
++ = (value
>> 24) & 0xff;
2231 *scan
++ = (value
>> 16) & 0xff;
2232 *scan
++ = (value
>> 8) & 0xff;
2233 *scan
++ = (value
& 0xff);
2237 threadref_to_int (threadref
*ref
)
2240 unsigned char *scan
;
2246 value
= (value
<< 8) | ((*scan
++) & 0xff);
2251 copy_threadref (threadref
*dest
, threadref
*src
)
2254 unsigned char *csrc
, *cdest
;
2256 csrc
= (unsigned char *) src
;
2257 cdest
= (unsigned char *) dest
;
2264 threadmatch (threadref
*dest
, threadref
*src
)
2266 /* Things are broken right now, so just assume we got a match. */
2268 unsigned char *srcp
, *destp
;
2270 srcp
= (char *) src
;
2271 destp
= (char *) dest
;
2275 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2282 threadid:1, # always request threadid
2289 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2292 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2294 *pkt
++ = 'q'; /* Info Query */
2295 *pkt
++ = 'P'; /* process or thread info */
2296 pkt
= pack_int (pkt
, mode
); /* mode */
2297 pkt
= pack_threadid (pkt
, id
); /* threadid */
2298 *pkt
= '\0'; /* terminate */
2302 /* These values tag the fields in a thread info response packet. */
2303 /* Tagging the fields allows us to request specific fields and to
2304 add more fields as time goes by. */
2306 #define TAG_THREADID 1 /* Echo the thread identifier. */
2307 #define TAG_EXISTS 2 /* Is this process defined enough to
2308 fetch registers and its stack? */
2309 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2310 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2311 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2315 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2316 struct gdb_ext_thread_info
*info
)
2318 struct remote_state
*rs
= get_remote_state ();
2322 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2325 /* info->threadid = 0; FIXME: implement zero_threadref. */
2327 info
->display
[0] = '\0';
2328 info
->shortname
[0] = '\0';
2329 info
->more_display
[0] = '\0';
2331 /* Assume the characters indicating the packet type have been
2333 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2334 pkt
= unpack_threadid (pkt
, &ref
);
2337 warning (_("Incomplete response to threadinfo request."));
2338 if (!threadmatch (&ref
, expectedref
))
2339 { /* This is an answer to a different request. */
2340 warning (_("ERROR RMT Thread info mismatch."));
2343 copy_threadref (&info
->threadid
, &ref
);
2345 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2347 /* Packets are terminated with nulls. */
2348 while ((pkt
< limit
) && mask
&& *pkt
)
2350 pkt
= unpack_int (pkt
, &tag
); /* tag */
2351 pkt
= unpack_byte (pkt
, &length
); /* length */
2352 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2354 warning (_("ERROR RMT: threadinfo tag mismatch."));
2358 if (tag
== TAG_THREADID
)
2362 warning (_("ERROR RMT: length of threadid is not 16."));
2366 pkt
= unpack_threadid (pkt
, &ref
);
2367 mask
= mask
& ~TAG_THREADID
;
2370 if (tag
== TAG_EXISTS
)
2372 info
->active
= stub_unpack_int (pkt
, length
);
2374 mask
= mask
& ~(TAG_EXISTS
);
2377 warning (_("ERROR RMT: 'exists' length too long."));
2383 if (tag
== TAG_THREADNAME
)
2385 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2386 mask
= mask
& ~TAG_THREADNAME
;
2389 if (tag
== TAG_DISPLAY
)
2391 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2392 mask
= mask
& ~TAG_DISPLAY
;
2395 if (tag
== TAG_MOREDISPLAY
)
2397 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2398 mask
= mask
& ~TAG_MOREDISPLAY
;
2401 warning (_("ERROR RMT: unknown thread info tag."));
2402 break; /* Not a tag we know about. */
2408 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2409 struct gdb_ext_thread_info
*info
)
2411 struct remote_state
*rs
= get_remote_state ();
2414 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2416 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2418 if (rs
->buf
[0] == '\0')
2421 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2426 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2429 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2430 threadref
*nextthread
)
2432 *pkt
++ = 'q'; /* info query packet */
2433 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2434 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2435 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2436 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2441 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2444 parse_threadlist_response (char *pkt
, int result_limit
,
2445 threadref
*original_echo
, threadref
*resultlist
,
2448 struct remote_state
*rs
= get_remote_state ();
2450 int count
, resultcount
, done
;
2453 /* Assume the 'q' and 'M chars have been stripped. */
2454 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2455 /* done parse past here */
2456 pkt
= unpack_byte (pkt
, &count
); /* count field */
2457 pkt
= unpack_nibble (pkt
, &done
);
2458 /* The first threadid is the argument threadid. */
2459 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2460 while ((count
-- > 0) && (pkt
< limit
))
2462 pkt
= unpack_threadid (pkt
, resultlist
++);
2463 if (resultcount
++ >= result_limit
)
2471 /* Fetch the next batch of threads from the remote. Returns -1 if the
2472 qL packet is not supported, 0 on error and 1 on success. */
2475 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2476 int *done
, int *result_count
, threadref
*threadlist
)
2478 struct remote_state
*rs
= get_remote_state ();
2481 /* Trancate result limit to be smaller than the packet size. */
2482 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2483 >= get_remote_packet_size ())
2484 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2486 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2488 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2489 if (*rs
->buf
== '\0')
2491 /* Packet not supported. */
2496 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2497 &rs
->echo_nextthread
, threadlist
, done
);
2499 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2501 /* FIXME: This is a good reason to drop the packet. */
2502 /* Possably, there is a duplicate response. */
2504 retransmit immediatly - race conditions
2505 retransmit after timeout - yes
2507 wait for packet, then exit
2509 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2510 return 0; /* I choose simply exiting. */
2512 if (*result_count
<= 0)
2516 warning (_("RMT ERROR : failed to get remote thread list."));
2519 return result
; /* break; */
2521 if (*result_count
> result_limit
)
2524 warning (_("RMT ERROR: threadlist response longer than requested."));
2530 /* Fetch the list of remote threads, with the qL packet, and call
2531 STEPFUNCTION for each thread found. Stops iterating and returns 1
2532 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2533 STEPFUNCTION returns false. If the packet is not supported,
2537 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2540 struct remote_state
*rs
= get_remote_state ();
2541 int done
, i
, result_count
;
2549 if (loopcount
++ > looplimit
)
2552 warning (_("Remote fetch threadlist -infinite loop-."));
2555 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2556 MAXTHREADLISTRESULTS
,
2557 &done
, &result_count
,
2558 rs
->resultthreadlist
);
2561 /* Clear for later iterations. */
2563 /* Setup to resume next batch of thread references, set nextthread. */
2564 if (result_count
>= 1)
2565 copy_threadref (&rs
->nextthread
,
2566 &rs
->resultthreadlist
[result_count
- 1]);
2568 while (result_count
--)
2570 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2580 /* A thread found on the remote target. */
2582 typedef struct thread_item
2584 /* The thread's PTID. */
2587 /* The thread's extra info. May be NULL. */
2590 /* The core the thread was running on. -1 if not known. */
2593 DEF_VEC_O(thread_item_t
);
2595 /* Context passed around to the various methods listing remote
2596 threads. As new threads are found, they're added to the ITEMS
2599 struct threads_listing_context
2601 /* The threads found on the remote target. */
2602 VEC (thread_item_t
) *items
;
2605 /* Discard the contents of the constructed thread listing context. */
2608 clear_threads_listing_context (void *p
)
2610 struct threads_listing_context
*context
= p
;
2612 struct thread_item
*item
;
2614 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2615 xfree (item
->extra
);
2617 VEC_free (thread_item_t
, context
->items
);
2621 remote_newthread_step (threadref
*ref
, void *data
)
2623 struct threads_listing_context
*context
= data
;
2624 struct thread_item item
;
2625 int pid
= ptid_get_pid (inferior_ptid
);
2627 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2631 VEC_safe_push (thread_item_t
, context
->items
, &item
);
2633 return 1; /* continue iterator */
2636 #define CRAZY_MAX_THREADS 1000
2639 remote_current_thread (ptid_t oldpid
)
2641 struct remote_state
*rs
= get_remote_state ();
2644 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2645 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2646 return read_ptid (&rs
->buf
[2], NULL
);
2651 /* List remote threads using the deprecated qL packet. */
2654 remote_get_threads_with_ql (struct target_ops
*ops
,
2655 struct threads_listing_context
*context
)
2657 if (remote_threadlist_iterator (remote_newthread_step
, context
,
2658 CRAZY_MAX_THREADS
) >= 0)
2664 #if defined(HAVE_LIBEXPAT)
2667 start_thread (struct gdb_xml_parser
*parser
,
2668 const struct gdb_xml_element
*element
,
2669 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2671 struct threads_listing_context
*data
= user_data
;
2673 struct thread_item item
;
2675 struct gdb_xml_value
*attr
;
2677 id
= xml_find_attribute (attributes
, "id")->value
;
2678 item
.ptid
= read_ptid (id
, NULL
);
2680 attr
= xml_find_attribute (attributes
, "core");
2682 item
.core
= *(ULONGEST
*) attr
->value
;
2688 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2692 end_thread (struct gdb_xml_parser
*parser
,
2693 const struct gdb_xml_element
*element
,
2694 void *user_data
, const char *body_text
)
2696 struct threads_listing_context
*data
= user_data
;
2698 if (body_text
&& *body_text
)
2699 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2702 const struct gdb_xml_attribute thread_attributes
[] = {
2703 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2704 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2705 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2708 const struct gdb_xml_element thread_children
[] = {
2709 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2712 const struct gdb_xml_element threads_children
[] = {
2713 { "thread", thread_attributes
, thread_children
,
2714 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2715 start_thread
, end_thread
},
2716 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2719 const struct gdb_xml_element threads_elements
[] = {
2720 { "threads", NULL
, threads_children
,
2721 GDB_XML_EF_NONE
, NULL
, NULL
},
2722 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2727 /* List remote threads using qXfer:threads:read. */
2730 remote_get_threads_with_qxfer (struct target_ops
*ops
,
2731 struct threads_listing_context
*context
)
2733 #if defined(HAVE_LIBEXPAT)
2734 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2736 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
2737 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2739 if (xml
!= NULL
&& *xml
!= '\0')
2741 gdb_xml_parse_quick (_("threads"), "threads.dtd",
2742 threads_elements
, xml
, context
);
2745 do_cleanups (back_to
);
2753 /* List remote threads using qfThreadInfo/qsThreadInfo. */
2756 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
2757 struct threads_listing_context
*context
)
2759 struct remote_state
*rs
= get_remote_state ();
2761 if (rs
->use_threadinfo_query
)
2765 putpkt ("qfThreadInfo");
2766 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2768 if (bufp
[0] != '\0') /* q packet recognized */
2770 while (*bufp
++ == 'm') /* reply contains one or more TID */
2774 struct thread_item item
;
2776 item
.ptid
= read_ptid (bufp
, &bufp
);
2780 VEC_safe_push (thread_item_t
, context
->items
, &item
);
2782 while (*bufp
++ == ','); /* comma-separated list */
2783 putpkt ("qsThreadInfo");
2784 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2791 /* Packet not recognized. */
2792 rs
->use_threadinfo_query
= 0;
2799 /* Implement the to_update_thread_list function for the remote
2803 remote_update_thread_list (struct target_ops
*ops
)
2805 struct remote_state
*rs
= get_remote_state ();
2806 struct threads_listing_context context
;
2807 struct cleanup
*old_chain
;
2810 context
.items
= NULL
;
2811 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
2813 /* We have a few different mechanisms to fetch the thread list. Try
2814 them all, starting with the most preferred one first, falling
2815 back to older methods. */
2816 if (remote_get_threads_with_qxfer (ops
, &context
)
2817 || remote_get_threads_with_qthreadinfo (ops
, &context
)
2818 || remote_get_threads_with_ql (ops
, &context
))
2821 struct thread_item
*item
;
2822 struct thread_info
*tp
, *tmp
;
2826 if (VEC_empty (thread_item_t
, context
.items
)
2827 && remote_thread_always_alive (ops
, inferior_ptid
))
2829 /* Some targets don't really support threads, but still
2830 reply an (empty) thread list in response to the thread
2831 listing packets, instead of replying "packet not
2832 supported". Exit early so we don't delete the main
2834 do_cleanups (old_chain
);
2838 /* CONTEXT now holds the current thread list on the remote
2839 target end. Delete GDB-side threads no longer found on the
2841 ALL_NON_EXITED_THREADS_SAFE (tp
, tmp
)
2844 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2847 if (ptid_equal (item
->ptid
, tp
->ptid
))
2851 if (i
== VEC_length (thread_item_t
, context
.items
))
2854 delete_thread (tp
->ptid
);
2858 /* And now add threads we don't know about yet to our list. */
2860 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2863 if (!ptid_equal (item
->ptid
, null_ptid
))
2865 struct private_thread_info
*info
;
2866 /* In non-stop mode, we assume new found threads are
2867 running until proven otherwise with a stop reply. In
2868 all-stop, we can only get here if all threads are
2870 int running
= non_stop
? 1 : 0;
2872 remote_notice_new_inferior (item
->ptid
, running
);
2874 info
= demand_private_info (item
->ptid
);
2875 info
->core
= item
->core
;
2876 info
->extra
= item
->extra
;
2884 /* If no thread listing method is supported, then query whether
2885 each known thread is alive, one by one, with the T packet.
2886 If the target doesn't support threads at all, then this is a
2887 no-op. See remote_thread_alive. */
2891 do_cleanups (old_chain
);
2895 * Collect a descriptive string about the given thread.
2896 * The target may say anything it wants to about the thread
2897 * (typically info about its blocked / runnable state, name, etc.).
2898 * This string will appear in the info threads display.
2900 * Optional: targets are not required to implement this function.
2904 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
2906 struct remote_state
*rs
= get_remote_state ();
2910 struct gdb_ext_thread_info threadinfo
;
2911 static char display_buf
[100]; /* arbitrary... */
2912 int n
= 0; /* position in display_buf */
2914 if (rs
->remote_desc
== 0) /* paranoia */
2915 internal_error (__FILE__
, __LINE__
,
2916 _("remote_threads_extra_info"));
2918 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2919 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
2920 /* This is the main thread which was added by GDB. The remote
2921 server doesn't know about it. */
2924 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2926 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2928 if (info
&& info
->priv
)
2929 return info
->priv
->extra
;
2934 if (rs
->use_threadextra_query
)
2937 char *endb
= rs
->buf
+ get_remote_packet_size ();
2939 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2941 write_ptid (b
, endb
, tp
->ptid
);
2944 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2945 if (rs
->buf
[0] != 0)
2947 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2948 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2949 display_buf
[result
] = '\0';
2954 /* If the above query fails, fall back to the old method. */
2955 rs
->use_threadextra_query
= 0;
2956 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2957 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2958 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
2959 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2960 if (threadinfo
.active
)
2962 if (*threadinfo
.shortname
)
2963 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2964 " Name: %s,", threadinfo
.shortname
);
2965 if (*threadinfo
.display
)
2966 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2967 " State: %s,", threadinfo
.display
);
2968 if (*threadinfo
.more_display
)
2969 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2970 " Priority: %s", threadinfo
.more_display
);
2974 /* For purely cosmetic reasons, clear up trailing commas. */
2975 if (',' == display_buf
[n
-1])
2976 display_buf
[n
-1] = ' ';
2985 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
2986 struct static_tracepoint_marker
*marker
)
2988 struct remote_state
*rs
= get_remote_state ();
2991 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2993 p
+= hexnumstr (p
, addr
);
2995 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2999 error (_("Remote failure reply: %s"), p
);
3003 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3010 static VEC(static_tracepoint_marker_p
) *
3011 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3014 struct remote_state
*rs
= get_remote_state ();
3015 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3016 struct static_tracepoint_marker
*marker
= NULL
;
3017 struct cleanup
*old_chain
;
3020 /* Ask for a first packet of static tracepoint marker
3023 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3026 error (_("Remote failure reply: %s"), p
);
3028 old_chain
= make_cleanup (free_current_marker
, &marker
);
3033 marker
= XCNEW (struct static_tracepoint_marker
);
3037 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3039 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3041 VEC_safe_push (static_tracepoint_marker_p
,
3047 release_static_tracepoint_marker (marker
);
3048 memset (marker
, 0, sizeof (*marker
));
3051 while (*p
++ == ','); /* comma-separated list */
3052 /* Ask for another packet of static tracepoint definition. */
3054 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3058 do_cleanups (old_chain
);
3063 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3066 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3068 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3072 /* Restart the remote side; this is an extended protocol operation. */
3075 extended_remote_restart (void)
3077 struct remote_state
*rs
= get_remote_state ();
3079 /* Send the restart command; for reasons I don't understand the
3080 remote side really expects a number after the "R". */
3081 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3084 remote_fileio_reset ();
3087 /* Clean up connection to a remote debugger. */
3090 remote_close (struct target_ops
*self
)
3092 struct remote_state
*rs
= get_remote_state ();
3094 if (rs
->remote_desc
== NULL
)
3095 return; /* already closed */
3097 /* Make sure we leave stdin registered in the event loop, and we
3098 don't leave the async SIGINT signal handler installed. */
3099 remote_terminal_ours (self
);
3101 serial_close (rs
->remote_desc
);
3102 rs
->remote_desc
= NULL
;
3104 /* We don't have a connection to the remote stub anymore. Get rid
3105 of all the inferiors and their threads we were controlling.
3106 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3107 will be unable to find the thread corresponding to (pid, 0, 0). */
3108 inferior_ptid
= null_ptid
;
3109 discard_all_inferiors ();
3111 /* We are closing the remote target, so we should discard
3112 everything of this target. */
3113 discard_pending_stop_replies_in_queue (rs
);
3115 if (remote_async_inferior_event_token
)
3116 delete_async_event_handler (&remote_async_inferior_event_token
);
3118 remote_notif_state_xfree (rs
->notif_state
);
3120 trace_reset_local_state ();
3123 /* Query the remote side for the text, data and bss offsets. */
3128 struct remote_state
*rs
= get_remote_state ();
3131 int lose
, num_segments
= 0, do_sections
, do_segments
;
3132 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3133 struct section_offsets
*offs
;
3134 struct symfile_segment_data
*data
;
3136 if (symfile_objfile
== NULL
)
3139 putpkt ("qOffsets");
3140 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3143 if (buf
[0] == '\000')
3144 return; /* Return silently. Stub doesn't support
3148 warning (_("Remote failure reply: %s"), buf
);
3152 /* Pick up each field in turn. This used to be done with scanf, but
3153 scanf will make trouble if CORE_ADDR size doesn't match
3154 conversion directives correctly. The following code will work
3155 with any size of CORE_ADDR. */
3156 text_addr
= data_addr
= bss_addr
= 0;
3160 if (startswith (ptr
, "Text="))
3163 /* Don't use strtol, could lose on big values. */
3164 while (*ptr
&& *ptr
!= ';')
3165 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3167 if (startswith (ptr
, ";Data="))
3170 while (*ptr
&& *ptr
!= ';')
3171 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3176 if (!lose
&& startswith (ptr
, ";Bss="))
3179 while (*ptr
&& *ptr
!= ';')
3180 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3182 if (bss_addr
!= data_addr
)
3183 warning (_("Target reported unsupported offsets: %s"), buf
);
3188 else if (startswith (ptr
, "TextSeg="))
3191 /* Don't use strtol, could lose on big values. */
3192 while (*ptr
&& *ptr
!= ';')
3193 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3196 if (startswith (ptr
, ";DataSeg="))
3199 while (*ptr
&& *ptr
!= ';')
3200 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3208 error (_("Malformed response to offset query, %s"), buf
);
3209 else if (*ptr
!= '\0')
3210 warning (_("Target reported unsupported offsets: %s"), buf
);
3212 offs
= ((struct section_offsets
*)
3213 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3214 memcpy (offs
, symfile_objfile
->section_offsets
,
3215 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3217 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3218 do_segments
= (data
!= NULL
);
3219 do_sections
= num_segments
== 0;
3221 if (num_segments
> 0)
3223 segments
[0] = text_addr
;
3224 segments
[1] = data_addr
;
3226 /* If we have two segments, we can still try to relocate everything
3227 by assuming that the .text and .data offsets apply to the whole
3228 text and data segments. Convert the offsets given in the packet
3229 to base addresses for symfile_map_offsets_to_segments. */
3230 else if (data
&& data
->num_segments
== 2)
3232 segments
[0] = data
->segment_bases
[0] + text_addr
;
3233 segments
[1] = data
->segment_bases
[1] + data_addr
;
3236 /* If the object file has only one segment, assume that it is text
3237 rather than data; main programs with no writable data are rare,
3238 but programs with no code are useless. Of course the code might
3239 have ended up in the data segment... to detect that we would need
3240 the permissions here. */
3241 else if (data
&& data
->num_segments
== 1)
3243 segments
[0] = data
->segment_bases
[0] + text_addr
;
3246 /* There's no way to relocate by segment. */
3252 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3253 offs
, num_segments
, segments
);
3255 if (ret
== 0 && !do_sections
)
3256 error (_("Can not handle qOffsets TextSeg "
3257 "response with this symbol file"));
3264 free_symfile_segment_data (data
);
3268 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3270 /* This is a temporary kludge to force data and bss to use the
3271 same offsets because that's what nlmconv does now. The real
3272 solution requires changes to the stub and remote.c that I
3273 don't have time to do right now. */
3275 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3276 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3279 objfile_relocate (symfile_objfile
, offs
);
3282 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3283 threads we know are stopped already. This is used during the
3284 initial remote connection in non-stop mode --- threads that are
3285 reported as already being stopped are left stopped. */
3288 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3290 /* If we have a stop reply for this thread, it must be stopped. */
3291 if (peek_stop_reply (thread
->ptid
))
3292 set_stop_requested (thread
->ptid
, 1);
3297 /* Send interrupt_sequence to remote target. */
3299 send_interrupt_sequence (void)
3301 struct remote_state
*rs
= get_remote_state ();
3303 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3304 remote_serial_write ("\x03", 1);
3305 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3306 serial_send_break (rs
->remote_desc
);
3307 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3309 serial_send_break (rs
->remote_desc
);
3310 remote_serial_write ("g", 1);
3313 internal_error (__FILE__
, __LINE__
,
3314 _("Invalid value for interrupt_sequence_mode: %s."),
3315 interrupt_sequence_mode
);
3319 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3320 and extract the PTID. Returns NULL_PTID if not found. */
3323 stop_reply_extract_thread (char *stop_reply
)
3325 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3329 /* Txx r:val ; r:val (...) */
3332 /* Look for "register" named "thread". */
3337 p1
= strchr (p
, ':');
3341 if (strncmp (p
, "thread", p1
- p
) == 0)
3342 return read_ptid (++p1
, &p
);
3344 p1
= strchr (p
, ';');
3356 /* Determine the remote side's current thread. If we have a stop
3357 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3358 "thread" register we can extract the current thread from. If not,
3359 ask the remote which is the current thread with qC. The former
3360 method avoids a roundtrip. */
3363 get_current_thread (char *wait_status
)
3367 /* Note we don't use remote_parse_stop_reply as that makes use of
3368 the target architecture, which we haven't yet fully determined at
3370 if (wait_status
!= NULL
)
3371 ptid
= stop_reply_extract_thread (wait_status
);
3372 if (ptid_equal (ptid
, null_ptid
))
3373 ptid
= remote_current_thread (inferior_ptid
);
3378 /* Query the remote target for which is the current thread/process,
3379 add it to our tables, and update INFERIOR_PTID. The caller is
3380 responsible for setting the state such that the remote end is ready
3381 to return the current thread.
3383 This function is called after handling the '?' or 'vRun' packets,
3384 whose response is a stop reply from which we can also try
3385 extracting the thread. If the target doesn't support the explicit
3386 qC query, we infer the current thread from that stop reply, passed
3387 in in WAIT_STATUS, which may be NULL. */
3390 add_current_inferior_and_thread (char *wait_status
)
3392 struct remote_state
*rs
= get_remote_state ();
3394 ptid_t ptid
= null_ptid
;
3396 inferior_ptid
= null_ptid
;
3398 /* Now, if we have thread information, update inferior_ptid. */
3399 ptid
= get_current_thread (wait_status
);
3401 if (!ptid_equal (ptid
, null_ptid
))
3403 if (!remote_multi_process_p (rs
))
3406 inferior_ptid
= ptid
;
3410 /* Without this, some commands which require an active target
3411 (such as kill) won't work. This variable serves (at least)
3412 double duty as both the pid of the target process (if it has
3413 such), and as a flag indicating that a target is active. */
3414 inferior_ptid
= magic_null_ptid
;
3418 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3420 /* Add the main thread. */
3421 add_thread_silent (inferior_ptid
);
3425 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3427 struct remote_state
*rs
= get_remote_state ();
3428 struct packet_config
*noack_config
;
3429 char *wait_status
= NULL
;
3431 immediate_quit
++; /* Allow user to interrupt it. */
3434 if (interrupt_on_connect
)
3435 send_interrupt_sequence ();
3437 /* Ack any packet which the remote side has already sent. */
3438 serial_write (rs
->remote_desc
, "+", 1);
3440 /* Signal other parts that we're going through the initial setup,
3441 and so things may not be stable yet. */
3442 rs
->starting_up
= 1;
3444 /* The first packet we send to the target is the optional "supported
3445 packets" request. If the target can answer this, it will tell us
3446 which later probes to skip. */
3447 remote_query_supported ();
3449 /* If the stub wants to get a QAllow, compose one and send it. */
3450 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3451 remote_set_permissions (target
);
3453 /* Next, we possibly activate noack mode.
3455 If the QStartNoAckMode packet configuration is set to AUTO,
3456 enable noack mode if the stub reported a wish for it with
3459 If set to TRUE, then enable noack mode even if the stub didn't
3460 report it in qSupported. If the stub doesn't reply OK, the
3461 session ends with an error.
3463 If FALSE, then don't activate noack mode, regardless of what the
3464 stub claimed should be the default with qSupported. */
3466 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3467 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3469 putpkt ("QStartNoAckMode");
3470 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3471 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3477 /* Tell the remote that we are using the extended protocol. */
3479 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3482 /* Let the target know which signals it is allowed to pass down to
3484 update_signals_program_target ();
3486 /* Next, if the target can specify a description, read it. We do
3487 this before anything involving memory or registers. */
3488 target_find_description ();
3490 /* Next, now that we know something about the target, update the
3491 address spaces in the program spaces. */
3492 update_address_spaces ();
3494 /* On OSs where the list of libraries is global to all
3495 processes, we fetch them early. */
3496 if (gdbarch_has_global_solist (target_gdbarch ()))
3497 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3501 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3502 error (_("Non-stop mode requested, but remote "
3503 "does not support non-stop"));
3505 putpkt ("QNonStop:1");
3506 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3508 if (strcmp (rs
->buf
, "OK") != 0)
3509 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3511 /* Find about threads and processes the stub is already
3512 controlling. We default to adding them in the running state.
3513 The '?' query below will then tell us about which threads are
3515 remote_update_thread_list (target
);
3517 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
3519 /* Don't assume that the stub can operate in all-stop mode.
3520 Request it explicitly. */
3521 putpkt ("QNonStop:0");
3522 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3524 if (strcmp (rs
->buf
, "OK") != 0)
3525 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3528 /* Upload TSVs regardless of whether the target is running or not. The
3529 remote stub, such as GDBserver, may have some predefined or builtin
3530 TSVs, even if the target is not running. */
3531 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3533 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3535 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3536 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3539 /* Check whether the target is running now. */
3541 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3547 struct inferior
*inf
;
3549 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3552 error (_("The target is not running (try extended-remote?)"));
3554 /* We're connected, but not running. Drop out before we
3555 call start_remote. */
3556 rs
->starting_up
= 0;
3561 /* Save the reply for later. */
3562 wait_status
= alloca (strlen (rs
->buf
) + 1);
3563 strcpy (wait_status
, rs
->buf
);
3566 /* Fetch thread list. */
3567 target_update_thread_list ();
3569 /* Let the stub know that we want it to return the thread. */
3570 set_continue_thread (minus_one_ptid
);
3572 if (thread_count () == 0)
3574 /* Target has no concept of threads at all. GDB treats
3575 non-threaded target as single-threaded; add a main
3577 add_current_inferior_and_thread (wait_status
);
3581 /* We have thread information; select the thread the target
3582 says should be current. If we're reconnecting to a
3583 multi-threaded program, this will ideally be the thread
3584 that last reported an event before GDB disconnected. */
3585 inferior_ptid
= get_current_thread (wait_status
);
3586 if (ptid_equal (inferior_ptid
, null_ptid
))
3588 /* Odd... The target was able to list threads, but not
3589 tell us which thread was current (no "thread"
3590 register in T stop reply?). Just pick the first
3591 thread in the thread list then. */
3592 inferior_ptid
= thread_list
->ptid
;
3596 /* init_wait_for_inferior should be called before get_offsets in order
3597 to manage `inserted' flag in bp loc in a correct state.
3598 breakpoint_init_inferior, called from init_wait_for_inferior, set
3599 `inserted' flag to 0, while before breakpoint_re_set, called from
3600 start_remote, set `inserted' flag to 1. In the initialization of
3601 inferior, breakpoint_init_inferior should be called first, and then
3602 breakpoint_re_set can be called. If this order is broken, state of
3603 `inserted' flag is wrong, and cause some problems on breakpoint
3605 init_wait_for_inferior ();
3607 get_offsets (); /* Get text, data & bss offsets. */
3609 /* If we could not find a description using qXfer, and we know
3610 how to do it some other way, try again. This is not
3611 supported for non-stop; it could be, but it is tricky if
3612 there are no stopped threads when we connect. */
3613 if (remote_read_description_p (target
)
3614 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3616 target_clear_description ();
3617 target_find_description ();
3620 /* Use the previously fetched status. */
3621 gdb_assert (wait_status
!= NULL
);
3622 strcpy (rs
->buf
, wait_status
);
3623 rs
->cached_wait_status
= 1;
3626 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3630 /* Clear WFI global state. Do this before finding about new
3631 threads and inferiors, and setting the current inferior.
3632 Otherwise we would clear the proceed status of the current
3633 inferior when we want its stop_soon state to be preserved
3634 (see notice_new_inferior). */
3635 init_wait_for_inferior ();
3637 /* In non-stop, we will either get an "OK", meaning that there
3638 are no stopped threads at this time; or, a regular stop
3639 reply. In the latter case, there may be more than one thread
3640 stopped --- we pull them all out using the vStopped
3642 if (strcmp (rs
->buf
, "OK") != 0)
3644 struct notif_client
*notif
= ¬if_client_stop
;
3646 /* remote_notif_get_pending_replies acks this one, and gets
3648 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3649 = remote_notif_parse (notif
, rs
->buf
);
3650 remote_notif_get_pending_events (notif
);
3652 /* Make sure that threads that were stopped remain
3654 iterate_over_threads (set_stop_requested_callback
, NULL
);
3657 if (target_can_async_p ())
3658 target_async (inferior_event_handler
, 0);
3660 if (thread_count () == 0)
3663 error (_("The target is not running (try extended-remote?)"));
3665 /* We're connected, but not running. Drop out before we
3666 call start_remote. */
3667 rs
->starting_up
= 0;
3671 /* Let the stub know that we want it to return the thread. */
3673 /* Force the stub to choose a thread. */
3674 set_general_thread (null_ptid
);
3677 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3678 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3679 error (_("remote didn't report the current thread in non-stop mode"));
3681 get_offsets (); /* Get text, data & bss offsets. */
3683 /* In non-stop mode, any cached wait status will be stored in
3684 the stop reply queue. */
3685 gdb_assert (wait_status
== NULL
);
3687 /* Report all signals during attach/startup. */
3688 remote_pass_signals (target
, 0, NULL
);
3691 /* If we connected to a live target, do some additional setup. */
3692 if (target_has_execution
)
3694 if (symfile_objfile
) /* No use without a symbol-file. */
3695 remote_check_symbols ();
3698 /* Possibly the target has been engaged in a trace run started
3699 previously; find out where things are at. */
3700 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3702 struct uploaded_tp
*uploaded_tps
= NULL
;
3704 if (current_trace_status ()->running
)
3705 printf_filtered (_("Trace is already running on the target.\n"));
3707 remote_upload_tracepoints (target
, &uploaded_tps
);
3709 merge_uploaded_tracepoints (&uploaded_tps
);
3712 /* The thread and inferior lists are now synchronized with the
3713 target, our symbols have been relocated, and we're merged the
3714 target's tracepoints with ours. We're done with basic start
3716 rs
->starting_up
= 0;
3718 /* Maybe breakpoints are global and need to be inserted now. */
3719 if (breakpoints_should_be_inserted_now ())
3720 insert_breakpoints ();
3723 /* Open a connection to a remote debugger.
3724 NAME is the filename used for communication. */
3727 remote_open (const char *name
, int from_tty
)
3729 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3732 /* Open a connection to a remote debugger using the extended
3733 remote gdb protocol. NAME is the filename used for communication. */
3736 extended_remote_open (const char *name
, int from_tty
)
3738 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3741 /* Reset all packets back to "unknown support". Called when opening a
3742 new connection to a remote target. */
3745 reset_all_packet_configs_support (void)
3749 for (i
= 0; i
< PACKET_MAX
; i
++)
3750 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3753 /* Initialize all packet configs. */
3756 init_all_packet_configs (void)
3760 for (i
= 0; i
< PACKET_MAX
; i
++)
3762 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
3763 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3767 /* Symbol look-up. */
3770 remote_check_symbols (void)
3772 struct remote_state
*rs
= get_remote_state ();
3773 char *msg
, *reply
, *tmp
;
3774 struct bound_minimal_symbol sym
;
3777 /* The remote side has no concept of inferiors that aren't running
3778 yet, it only knows about running processes. If we're connected
3779 but our current inferior is not running, we should not invite the
3780 remote target to request symbol lookups related to its
3781 (unrelated) current process. */
3782 if (!target_has_execution
)
3785 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
3788 /* Make sure the remote is pointing at the right process. Note
3789 there's no way to select "no process". */
3790 set_general_process ();
3792 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3793 because we need both at the same time. */
3794 msg
= alloca (get_remote_packet_size ());
3796 /* Invite target to request symbol lookups. */
3798 putpkt ("qSymbol::");
3799 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3800 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3803 while (startswith (reply
, "qSymbol:"))
3805 struct bound_minimal_symbol sym
;
3808 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3810 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3811 if (sym
.minsym
== NULL
)
3812 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3815 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3816 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
3818 /* If this is a function address, return the start of code
3819 instead of any data function descriptor. */
3820 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3824 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3825 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3829 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3834 static struct serial
*
3835 remote_serial_open (const char *name
)
3837 static int udp_warning
= 0;
3839 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3840 of in ser-tcp.c, because it is the remote protocol assuming that the
3841 serial connection is reliable and not the serial connection promising
3843 if (!udp_warning
&& startswith (name
, "udp:"))
3845 warning (_("The remote protocol may be unreliable over UDP.\n"
3846 "Some events may be lost, rendering further debugging "
3851 return serial_open (name
);
3854 /* Inform the target of our permission settings. The permission flags
3855 work without this, but if the target knows the settings, it can do
3856 a couple things. First, it can add its own check, to catch cases
3857 that somehow manage to get by the permissions checks in target
3858 methods. Second, if the target is wired to disallow particular
3859 settings (for instance, a system in the field that is not set up to
3860 be able to stop at a breakpoint), it can object to any unavailable
3864 remote_set_permissions (struct target_ops
*self
)
3866 struct remote_state
*rs
= get_remote_state ();
3868 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3869 "WriteReg:%x;WriteMem:%x;"
3870 "InsertBreak:%x;InsertTrace:%x;"
3871 "InsertFastTrace:%x;Stop:%x",
3872 may_write_registers
, may_write_memory
,
3873 may_insert_breakpoints
, may_insert_tracepoints
,
3874 may_insert_fast_tracepoints
, may_stop
);
3876 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3878 /* If the target didn't like the packet, warn the user. Do not try
3879 to undo the user's settings, that would just be maddening. */
3880 if (strcmp (rs
->buf
, "OK") != 0)
3881 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3884 /* This type describes each known response to the qSupported
3886 struct protocol_feature
3888 /* The name of this protocol feature. */
3891 /* The default for this protocol feature. */
3892 enum packet_support default_support
;
3894 /* The function to call when this feature is reported, or after
3895 qSupported processing if the feature is not supported.
3896 The first argument points to this structure. The second
3897 argument indicates whether the packet requested support be
3898 enabled, disabled, or probed (or the default, if this function
3899 is being called at the end of processing and this feature was
3900 not reported). The third argument may be NULL; if not NULL, it
3901 is a NUL-terminated string taken from the packet following
3902 this feature's name and an equals sign. */
3903 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3906 /* The corresponding packet for this feature. Only used if
3907 FUNC is remote_supported_packet. */
3912 remote_supported_packet (const struct protocol_feature
*feature
,
3913 enum packet_support support
,
3914 const char *argument
)
3918 warning (_("Remote qSupported response supplied an unexpected value for"
3919 " \"%s\"."), feature
->name
);
3923 remote_protocol_packets
[feature
->packet
].support
= support
;
3927 remote_packet_size (const struct protocol_feature
*feature
,
3928 enum packet_support support
, const char *value
)
3930 struct remote_state
*rs
= get_remote_state ();
3935 if (support
!= PACKET_ENABLE
)
3938 if (value
== NULL
|| *value
== '\0')
3940 warning (_("Remote target reported \"%s\" without a size."),
3946 packet_size
= strtol (value
, &value_end
, 16);
3947 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3949 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3950 feature
->name
, value
);
3954 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3956 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3957 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3958 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3961 /* Record the new maximum packet size. */
3962 rs
->explicit_packet_size
= packet_size
;
3965 static const struct protocol_feature remote_protocol_features
[] = {
3966 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3967 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3968 PACKET_qXfer_auxv
},
3969 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3970 PACKET_qXfer_features
},
3971 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3972 PACKET_qXfer_libraries
},
3973 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3974 PACKET_qXfer_libraries_svr4
},
3975 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3976 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
3977 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3978 PACKET_qXfer_memory_map
},
3979 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3980 PACKET_qXfer_spu_read
},
3981 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3982 PACKET_qXfer_spu_write
},
3983 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3984 PACKET_qXfer_osdata
},
3985 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3986 PACKET_qXfer_threads
},
3987 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3988 PACKET_qXfer_traceframe_info
},
3989 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3990 PACKET_QPassSignals
},
3991 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3992 PACKET_QProgramSignals
},
3993 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3994 PACKET_QStartNoAckMode
},
3995 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
3996 PACKET_multiprocess_feature
},
3997 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
3998 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3999 PACKET_qXfer_siginfo_read
},
4000 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4001 PACKET_qXfer_siginfo_write
},
4002 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_ConditionalTracepoints
},
4004 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4005 PACKET_ConditionalBreakpoints
},
4006 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4007 PACKET_BreakpointCommands
},
4008 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4009 PACKET_FastTracepoints
},
4010 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4011 PACKET_StaticTracepoints
},
4012 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4013 PACKET_InstallInTrace
},
4014 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4015 PACKET_DisconnectedTracing_feature
},
4016 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4018 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4020 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4021 PACKET_TracepointSource
},
4022 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4024 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4025 PACKET_EnableDisableTracepoints_feature
},
4026 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4027 PACKET_qXfer_fdpic
},
4028 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4030 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4031 PACKET_QDisableRandomization
},
4032 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4033 { "QTBuffer:size", PACKET_DISABLE
,
4034 remote_supported_packet
, PACKET_QTBuffer_size
},
4035 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4036 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4037 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4038 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4039 PACKET_qXfer_btrace
},
4040 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4041 PACKET_qXfer_btrace_conf
},
4042 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4043 PACKET_Qbtrace_conf_bts_size
},
4044 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4045 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
}
4048 static char *remote_support_xml
;
4050 /* Register string appended to "xmlRegisters=" in qSupported query. */
4053 register_remote_support_xml (const char *xml
)
4055 #if defined(HAVE_LIBEXPAT)
4056 if (remote_support_xml
== NULL
)
4057 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4060 char *copy
= xstrdup (remote_support_xml
+ 13);
4061 char *p
= strtok (copy
, ",");
4065 if (strcmp (p
, xml
) == 0)
4072 while ((p
= strtok (NULL
, ",")) != NULL
);
4075 remote_support_xml
= reconcat (remote_support_xml
,
4076 remote_support_xml
, ",", xml
,
4083 remote_query_supported_append (char *msg
, const char *append
)
4086 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4088 return xstrdup (append
);
4092 remote_query_supported (void)
4094 struct remote_state
*rs
= get_remote_state ();
4097 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4099 /* The packet support flags are handled differently for this packet
4100 than for most others. We treat an error, a disabled packet, and
4101 an empty response identically: any features which must be reported
4102 to be used will be automatically disabled. An empty buffer
4103 accomplishes this, since that is also the representation for a list
4104 containing no features. */
4107 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4110 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4112 q
= remote_query_supported_append (q
, "multiprocess+");
4114 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4115 q
= remote_query_supported_append (q
, "swbreak+");
4116 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4117 q
= remote_query_supported_append (q
, "hwbreak+");
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 (const 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 reset_all_packet_configs_support ();
4328 rs
->cached_wait_status
= 0;
4329 rs
->explicit_packet_size
= 0;
4331 rs
->extended
= extended_p
;
4332 rs
->waiting_for_stop_reply
= 0;
4333 rs
->ctrlc_pending_p
= 0;
4335 rs
->general_thread
= not_sent_ptid
;
4336 rs
->continue_thread
= not_sent_ptid
;
4337 rs
->remote_traceframe_number
= -1;
4339 /* Probe for ability to use "ThreadInfo" query, as required. */
4340 rs
->use_threadinfo_query
= 1;
4341 rs
->use_threadextra_query
= 1;
4343 if (target_async_permitted
)
4345 /* With this target we start out by owning the terminal. */
4346 remote_async_terminal_ours_p
= 1;
4348 /* FIXME: cagney/1999-09-23: During the initial connection it is
4349 assumed that the target is already ready and able to respond to
4350 requests. Unfortunately remote_start_remote() eventually calls
4351 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4352 around this. Eventually a mechanism that allows
4353 wait_for_inferior() to expect/get timeouts will be
4355 wait_forever_enabled_p
= 0;
4358 /* First delete any symbols previously loaded from shared libraries. */
4359 no_shared_libraries (NULL
, 0);
4362 init_thread_list ();
4364 /* Start the remote connection. If error() or QUIT, discard this
4365 target (we'd otherwise be in an inconsistent state) and then
4366 propogate the error on up the exception chain. This ensures that
4367 the caller doesn't stumble along blindly assuming that the
4368 function succeeded. The CLI doesn't have this problem but other
4369 UI's, such as MI do.
4371 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4372 this function should return an error indication letting the
4373 caller restore the previous state. Unfortunately the command
4374 ``target remote'' is directly wired to this function making that
4375 impossible. On a positive note, the CLI side of this problem has
4376 been fixed - the function set_cmd_context() makes it possible for
4377 all the ``target ....'' commands to share a common callback
4378 function. See cli-dump.c. */
4380 volatile struct gdb_exception ex
;
4382 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4384 remote_start_remote (from_tty
, target
, extended_p
);
4388 /* Pop the partially set up target - unless something else did
4389 already before throwing the exception. */
4390 if (rs
->remote_desc
!= NULL
)
4391 remote_unpush_target ();
4392 if (target_async_permitted
)
4393 wait_forever_enabled_p
= 1;
4394 throw_exception (ex
);
4398 remote_btrace_reset ();
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
, const 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
, const char *args
,
4489 struct remote_state
*rs
= get_remote_state ();
4491 char *wait_status
= NULL
;
4493 pid
= parse_pid_to_attach (args
);
4495 /* Remote PID can be freely equal to getpid, do not check it here the same
4496 way as in other targets. */
4498 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
4499 error (_("This target does not support attaching to a process"));
4503 char *exec_file
= get_exec_file (0);
4506 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4507 target_pid_to_str (pid_to_ptid (pid
)));
4509 printf_unfiltered (_("Attaching to %s\n"),
4510 target_pid_to_str (pid_to_ptid (pid
)));
4512 gdb_flush (gdb_stdout
);
4515 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4517 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4519 switch (packet_ok (rs
->buf
,
4520 &remote_protocol_packets
[PACKET_vAttach
]))
4525 /* Save the reply for later. */
4526 wait_status
= alloca (strlen (rs
->buf
) + 1);
4527 strcpy (wait_status
, rs
->buf
);
4529 else if (strcmp (rs
->buf
, "OK") != 0)
4530 error (_("Attaching to %s failed with: %s"),
4531 target_pid_to_str (pid_to_ptid (pid
)),
4534 case PACKET_UNKNOWN
:
4535 error (_("This target does not support attaching to a process"));
4537 error (_("Attaching to %s failed"),
4538 target_pid_to_str (pid_to_ptid (pid
)));
4541 set_current_inferior (remote_add_inferior (0, pid
, 1));
4543 inferior_ptid
= pid_to_ptid (pid
);
4547 struct thread_info
*thread
;
4549 /* Get list of threads. */
4550 remote_update_thread_list (target
);
4552 thread
= first_thread_of_process (pid
);
4554 inferior_ptid
= thread
->ptid
;
4556 inferior_ptid
= pid_to_ptid (pid
);
4558 /* Invalidate our notion of the remote current thread. */
4559 record_currthread (rs
, minus_one_ptid
);
4563 /* Now, if we have thread information, update inferior_ptid. */
4564 inferior_ptid
= remote_current_thread (inferior_ptid
);
4566 /* Add the main thread to the thread list. */
4567 add_thread_silent (inferior_ptid
);
4570 /* Next, if the target can specify a description, read it. We do
4571 this before anything involving memory or registers. */
4572 target_find_description ();
4576 /* Use the previously fetched status. */
4577 gdb_assert (wait_status
!= NULL
);
4579 if (target_can_async_p ())
4581 struct notif_event
*reply
4582 = remote_notif_parse (¬if_client_stop
, wait_status
);
4584 push_stop_reply ((struct stop_reply
*) reply
);
4586 target_async (inferior_event_handler
, 0);
4590 gdb_assert (wait_status
!= NULL
);
4591 strcpy (rs
->buf
, wait_status
);
4592 rs
->cached_wait_status
= 1;
4596 gdb_assert (wait_status
== NULL
);
4600 extended_remote_attach (struct target_ops
*ops
, const char *args
, int from_tty
)
4602 extended_remote_attach_1 (ops
, args
, from_tty
);
4605 /* Implementation of the to_post_attach method. */
4608 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
4610 /* In certain cases GDB might not have had the chance to start
4611 symbol lookup up until now. This could happen if the debugged
4612 binary is not using shared libraries, the vsyscall page is not
4613 present (on Linux) and the binary itself hadn't changed since the
4614 debugging process was started. */
4615 if (symfile_objfile
!= NULL
)
4616 remote_check_symbols();
4620 /* Check for the availability of vCont. This function should also check
4624 remote_vcont_probe (struct remote_state
*rs
)
4628 strcpy (rs
->buf
, "vCont?");
4630 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4633 /* Make sure that the features we assume are supported. */
4634 if (startswith (buf
, "vCont"))
4637 int support_s
, support_S
, support_c
, support_C
;
4643 rs
->supports_vCont
.t
= 0;
4644 rs
->supports_vCont
.r
= 0;
4645 while (p
&& *p
== ';')
4648 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4650 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4652 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4654 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4656 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4657 rs
->supports_vCont
.t
= 1;
4658 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4659 rs
->supports_vCont
.r
= 1;
4661 p
= strchr (p
, ';');
4664 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4665 BUF will make packet_ok disable the packet. */
4666 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4670 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4673 /* Helper function for building "vCont" resumptions. Write a
4674 resumption to P. ENDP points to one-passed-the-end of the buffer
4675 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4676 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4677 resumed thread should be single-stepped and/or signalled. If PTID
4678 equals minus_one_ptid, then all threads are resumed; if PTID
4679 represents a process, then all threads of the process are resumed;
4680 the thread to be stepped and/or signalled is given in the global
4684 append_resumption (char *p
, char *endp
,
4685 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4687 struct remote_state
*rs
= get_remote_state ();
4689 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4690 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4692 /* GDB is willing to range step. */
4693 && use_range_stepping
4694 /* Target supports range stepping. */
4695 && rs
->supports_vCont
.r
4696 /* We don't currently support range stepping multiple
4697 threads with a wildcard (though the protocol allows it,
4698 so stubs shouldn't make an active effort to forbid
4700 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4702 struct thread_info
*tp
;
4704 if (ptid_equal (ptid
, minus_one_ptid
))
4706 /* If we don't know about the target thread's tid, then
4707 we're resuming magic_null_ptid (see caller). */
4708 tp
= find_thread_ptid (magic_null_ptid
);
4711 tp
= find_thread_ptid (ptid
);
4712 gdb_assert (tp
!= NULL
);
4714 if (tp
->control
.may_range_step
)
4716 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4718 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4719 phex_nz (tp
->control
.step_range_start
,
4721 phex_nz (tp
->control
.step_range_end
,
4725 p
+= xsnprintf (p
, endp
- p
, ";s");
4728 p
+= xsnprintf (p
, endp
- p
, ";s");
4729 else if (siggnal
!= GDB_SIGNAL_0
)
4730 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4732 p
+= xsnprintf (p
, endp
- p
, ";c");
4734 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4738 /* All (-1) threads of process. */
4739 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4741 p
+= xsnprintf (p
, endp
- p
, ":");
4742 p
= write_ptid (p
, endp
, nptid
);
4744 else if (!ptid_equal (ptid
, minus_one_ptid
))
4746 p
+= xsnprintf (p
, endp
- p
, ":");
4747 p
= write_ptid (p
, endp
, ptid
);
4753 /* Append a vCont continue-with-signal action for threads that have a
4754 non-zero stop signal. */
4757 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4759 struct thread_info
*thread
;
4761 ALL_NON_EXITED_THREADS (thread
)
4762 if (ptid_match (thread
->ptid
, ptid
)
4763 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4764 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
4766 p
= append_resumption (p
, endp
, thread
->ptid
,
4767 0, thread
->suspend
.stop_signal
);
4768 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4774 /* Resume the remote inferior by using a "vCont" packet. The thread
4775 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4776 resumed thread should be single-stepped and/or signalled. If PTID
4777 equals minus_one_ptid, then all threads are resumed; the thread to
4778 be stepped and/or signalled is given in the global INFERIOR_PTID.
4779 This function returns non-zero iff it resumes the inferior.
4781 This function issues a strict subset of all possible vCont commands at the
4785 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4787 struct remote_state
*rs
= get_remote_state ();
4791 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4792 remote_vcont_probe (rs
);
4794 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
4798 endp
= rs
->buf
+ get_remote_packet_size ();
4800 /* If we could generate a wider range of packets, we'd have to worry
4801 about overflowing BUF. Should there be a generic
4802 "multi-part-packet" packet? */
4804 p
+= xsnprintf (p
, endp
- p
, "vCont");
4806 if (ptid_equal (ptid
, magic_null_ptid
))
4808 /* MAGIC_NULL_PTID means that we don't have any active threads,
4809 so we don't have any TID numbers the inferior will
4810 understand. Make sure to only send forms that do not specify
4812 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4814 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4816 /* Resume all threads (of all processes, or of a single
4817 process), with preference for INFERIOR_PTID. This assumes
4818 inferior_ptid belongs to the set of all threads we are about
4820 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4822 /* Step inferior_ptid, with or without signal. */
4823 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4826 /* Also pass down any pending signaled resumption for other
4827 threads not the current. */
4828 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4830 /* And continue others without a signal. */
4831 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4835 /* Scheduler locking; resume only PTID. */
4836 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4839 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4844 /* In non-stop, the stub replies to vCont with "OK". The stop
4845 reply will be reported asynchronously by means of a `%Stop'
4847 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4848 if (strcmp (rs
->buf
, "OK") != 0)
4849 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4855 /* Tell the remote machine to resume. */
4858 remote_resume (struct target_ops
*ops
,
4859 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4861 struct remote_state
*rs
= get_remote_state ();
4864 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4865 (explained in remote-notif.c:handle_notification) so
4866 remote_notif_process is not called. We need find a place where
4867 it is safe to start a 'vNotif' sequence. It is good to do it
4868 before resuming inferior, because inferior was stopped and no RSP
4869 traffic at that moment. */
4871 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4873 rs
->last_sent_signal
= siggnal
;
4874 rs
->last_sent_step
= step
;
4876 /* The vCont packet doesn't need to specify threads via Hc. */
4877 /* No reverse support (yet) for vCont. */
4878 if (execution_direction
!= EXEC_REVERSE
)
4879 if (remote_vcont_resume (ptid
, step
, siggnal
))
4882 /* All other supported resume packets do use Hc, so set the continue
4884 if (ptid_equal (ptid
, minus_one_ptid
))
4885 set_continue_thread (any_thread_ptid
);
4887 set_continue_thread (ptid
);
4890 if (execution_direction
== EXEC_REVERSE
)
4892 /* We don't pass signals to the target in reverse exec mode. */
4893 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4894 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4897 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
4898 error (_("Remote reverse-step not supported."));
4899 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
4900 error (_("Remote reverse-continue not supported."));
4902 strcpy (buf
, step
? "bs" : "bc");
4904 else if (siggnal
!= GDB_SIGNAL_0
)
4906 buf
[0] = step
? 'S' : 'C';
4907 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4908 buf
[2] = tohex (((int) siggnal
) & 0xf);
4912 strcpy (buf
, step
? "s" : "c");
4917 /* We are about to start executing the inferior, let's register it
4918 with the event loop. NOTE: this is the one place where all the
4919 execution commands end up. We could alternatively do this in each
4920 of the execution commands in infcmd.c. */
4921 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4922 into infcmd.c in order to allow inferior function calls to work
4923 NOT asynchronously. */
4924 if (target_can_async_p ())
4925 target_async (inferior_event_handler
, 0);
4927 /* We've just told the target to resume. The remote server will
4928 wait for the inferior to stop, and then send a stop reply. In
4929 the mean time, we can't start another command/query ourselves
4930 because the stub wouldn't be ready to process it. This applies
4931 only to the base all-stop protocol, however. In non-stop (which
4932 only supports vCont), the stub replies with an "OK", and is
4933 immediate able to process further serial input. */
4935 rs
->waiting_for_stop_reply
= 1;
4939 /* Set up the signal handler for SIGINT, while the target is
4940 executing, ovewriting the 'regular' SIGINT signal handler. */
4942 async_initialize_sigint_signal_handler (void)
4944 signal (SIGINT
, async_handle_remote_sigint
);
4947 /* Signal handler for SIGINT, while the target is executing. */
4949 async_handle_remote_sigint (int sig
)
4951 signal (sig
, async_handle_remote_sigint_twice
);
4952 /* Note we need to go through gdb_call_async_signal_handler in order
4953 to wake up the event loop on Windows. */
4954 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
4957 /* Signal handler for SIGINT, installed after SIGINT has already been
4958 sent once. It will take effect the second time that the user sends
4961 async_handle_remote_sigint_twice (int sig
)
4963 signal (sig
, async_handle_remote_sigint
);
4964 /* See note in async_handle_remote_sigint. */
4965 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
4968 /* Perform the real interruption of the target execution, in response
4971 async_remote_interrupt (gdb_client_data arg
)
4974 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4976 target_stop (inferior_ptid
);
4979 /* Perform interrupt, if the first attempt did not succeed. Just give
4980 up on the target alltogether. */
4982 async_remote_interrupt_twice (gdb_client_data arg
)
4985 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4990 /* Reinstall the usual SIGINT handlers, after the target has
4993 async_cleanup_sigint_signal_handler (void *dummy
)
4995 signal (SIGINT
, handle_sigint
);
4998 /* Send ^C to target to halt it. Target will respond, and send us a
5000 static void (*ofunc
) (int);
5002 /* The command line interface's stop routine. This function is installed
5003 as a signal handler for SIGINT. The first time a user requests a
5004 stop, we call remote_stop to send a break or ^C. If there is no
5005 response from the target (it didn't stop when the user requested it),
5006 we ask the user if he'd like to detach from the target. */
5008 sync_remote_interrupt (int signo
)
5010 /* If this doesn't work, try more severe steps. */
5011 signal (signo
, sync_remote_interrupt_twice
);
5013 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5016 /* The user typed ^C twice. */
5019 sync_remote_interrupt_twice (int signo
)
5021 signal (signo
, ofunc
);
5022 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5023 signal (signo
, sync_remote_interrupt
);
5026 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5027 thread, all threads of a remote process, or all threads of all
5031 remote_stop_ns (ptid_t ptid
)
5033 struct remote_state
*rs
= get_remote_state ();
5035 char *endp
= rs
->buf
+ get_remote_packet_size ();
5037 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5038 remote_vcont_probe (rs
);
5040 if (!rs
->supports_vCont
.t
)
5041 error (_("Remote server does not support stopping threads"));
5043 if (ptid_equal (ptid
, minus_one_ptid
)
5044 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5045 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5050 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5052 if (ptid_is_pid (ptid
))
5053 /* All (-1) threads of process. */
5054 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5057 /* Small optimization: if we already have a stop reply for
5058 this thread, no use in telling the stub we want this
5060 if (peek_stop_reply (ptid
))
5066 write_ptid (p
, endp
, nptid
);
5069 /* In non-stop, we get an immediate OK reply. The stop reply will
5070 come in asynchronously by notification. */
5072 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5073 if (strcmp (rs
->buf
, "OK") != 0)
5074 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5077 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5078 remote target. It is undefined which thread of which process
5079 reports the stop. */
5082 remote_stop_as (ptid_t ptid
)
5084 struct remote_state
*rs
= get_remote_state ();
5086 rs
->ctrlc_pending_p
= 1;
5088 /* If the inferior is stopped already, but the core didn't know
5089 about it yet, just ignore the request. The cached wait status
5090 will be collected in remote_wait. */
5091 if (rs
->cached_wait_status
)
5094 /* Send interrupt_sequence to remote target. */
5095 send_interrupt_sequence ();
5098 /* This is the generic stop called via the target vector. When a target
5099 interrupt is requested, either by the command line or the GUI, we
5100 will eventually end up here. */
5103 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5106 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5109 remote_stop_ns (ptid
);
5111 remote_stop_as (ptid
);
5114 /* Ask the user what to do when an interrupt is received. */
5117 interrupt_query (void)
5119 target_terminal_ours ();
5121 if (target_is_async_p ())
5123 signal (SIGINT
, handle_sigint
);
5128 if (query (_("Interrupted while waiting for the program.\n\
5129 Give up (and stop debugging it)? ")))
5131 remote_unpush_target ();
5136 target_terminal_inferior ();
5139 /* Enable/disable target terminal ownership. Most targets can use
5140 terminal groups to control terminal ownership. Remote targets are
5141 different in that explicit transfer of ownership to/from GDB/target
5145 remote_terminal_inferior (struct target_ops
*self
)
5147 if (!target_async_permitted
)
5148 /* Nothing to do. */
5151 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5152 idempotent. The event-loop GDB talking to an asynchronous target
5153 with a synchronous command calls this function from both
5154 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5155 transfer the terminal to the target when it shouldn't this guard
5157 if (!remote_async_terminal_ours_p
)
5159 delete_file_handler (input_fd
);
5160 remote_async_terminal_ours_p
= 0;
5161 async_initialize_sigint_signal_handler ();
5162 /* NOTE: At this point we could also register our selves as the
5163 recipient of all input. Any characters typed could then be
5164 passed on down to the target. */
5168 remote_terminal_ours (struct target_ops
*self
)
5170 if (!target_async_permitted
)
5171 /* Nothing to do. */
5174 /* See FIXME in remote_terminal_inferior. */
5175 if (remote_async_terminal_ours_p
)
5177 async_cleanup_sigint_signal_handler (NULL
);
5178 add_file_handler (input_fd
, stdin_event_handler
, 0);
5179 remote_async_terminal_ours_p
= 1;
5183 remote_console_output (char *msg
)
5187 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5190 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5194 fputs_unfiltered (tb
, gdb_stdtarg
);
5196 gdb_flush (gdb_stdtarg
);
5199 typedef struct cached_reg
5202 gdb_byte data
[MAX_REGISTER_SIZE
];
5205 DEF_VEC_O(cached_reg_t
);
5207 typedef struct stop_reply
5209 struct notif_event base
;
5211 /* The identifier of the thread about this event */
5214 /* The remote state this event is associated with. When the remote
5215 connection, represented by a remote_state object, is closed,
5216 all the associated stop_reply events should be released. */
5217 struct remote_state
*rs
;
5219 struct target_waitstatus ws
;
5221 /* Expedited registers. This makes remote debugging a bit more
5222 efficient for those targets that provide critical registers as
5223 part of their normal status mechanism (as another roundtrip to
5224 fetch them is avoided). */
5225 VEC(cached_reg_t
) *regcache
;
5227 enum target_stop_reason stop_reason
;
5229 CORE_ADDR watch_data_address
;
5234 DECLARE_QUEUE_P (stop_reply_p
);
5235 DEFINE_QUEUE_P (stop_reply_p
);
5236 /* The list of already fetched and acknowledged stop events. This
5237 queue is used for notification Stop, and other notifications
5238 don't need queue for their events, because the notification events
5239 of Stop can't be consumed immediately, so that events should be
5240 queued first, and be consumed by remote_wait_{ns,as} one per
5241 time. Other notifications can consume their events immediately,
5242 so queue is not needed for them. */
5243 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5246 stop_reply_xfree (struct stop_reply
*r
)
5248 notif_event_xfree ((struct notif_event
*) r
);
5252 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5253 struct notif_event
*event
)
5255 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5259 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5260 struct notif_event
*event
)
5262 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5265 putpkt ((char *) self
->ack_command
);
5267 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5268 /* We got an unknown stop reply. */
5269 error (_("Unknown stop reply"));
5271 push_stop_reply (stop_reply
);
5275 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5277 /* We can't get pending events in remote_notif_process for
5278 notification stop, and we have to do this in remote_wait_ns
5279 instead. If we fetch all queued events from stub, remote stub
5280 may exit and we have no chance to process them back in
5282 mark_async_event_handler (remote_async_inferior_event_token
);
5287 stop_reply_dtr (struct notif_event
*event
)
5289 struct stop_reply
*r
= (struct stop_reply
*) event
;
5291 VEC_free (cached_reg_t
, r
->regcache
);
5294 static struct notif_event
*
5295 remote_notif_stop_alloc_reply (void)
5297 struct notif_event
*r
5298 = (struct notif_event
*) XNEW (struct stop_reply
);
5300 r
->dtr
= stop_reply_dtr
;
5305 /* A client of notification Stop. */
5307 struct notif_client notif_client_stop
=
5311 remote_notif_stop_parse
,
5312 remote_notif_stop_ack
,
5313 remote_notif_stop_can_get_pending_events
,
5314 remote_notif_stop_alloc_reply
,
5318 /* A parameter to pass data in and out. */
5320 struct queue_iter_param
5323 struct stop_reply
*output
;
5326 /* Remove stop replies in the queue if its pid is equal to the given
5330 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5331 QUEUE_ITER (stop_reply_p
) *iter
,
5335 struct queue_iter_param
*param
= data
;
5336 struct inferior
*inf
= param
->input
;
5338 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5340 stop_reply_xfree (event
);
5341 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5347 /* Discard all pending stop replies of inferior INF. */
5350 discard_pending_stop_replies (struct inferior
*inf
)
5353 struct queue_iter_param param
;
5354 struct stop_reply
*reply
;
5355 struct remote_state
*rs
= get_remote_state ();
5356 struct remote_notif_state
*rns
= rs
->notif_state
;
5358 /* This function can be notified when an inferior exists. When the
5359 target is not remote, the notification state is NULL. */
5360 if (rs
->remote_desc
== NULL
)
5363 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5365 /* Discard the in-flight notification. */
5366 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5368 stop_reply_xfree (reply
);
5369 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5373 param
.output
= NULL
;
5374 /* Discard the stop replies we have already pulled with
5376 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5377 remove_stop_reply_for_inferior
, ¶m
);
5380 /* If its remote state is equal to the given remote state,
5381 remove EVENT from the stop reply queue. */
5384 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5385 QUEUE_ITER (stop_reply_p
) *iter
,
5389 struct queue_iter_param
*param
= data
;
5390 struct remote_state
*rs
= param
->input
;
5392 if (event
->rs
== rs
)
5394 stop_reply_xfree (event
);
5395 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5401 /* Discard the stop replies for RS in stop_reply_queue. */
5404 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5406 struct queue_iter_param param
;
5409 param
.output
= NULL
;
5410 /* Discard the stop replies we have already pulled with
5412 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5413 remove_stop_reply_of_remote_state
, ¶m
);
5416 /* A parameter to pass data in and out. */
5419 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5420 QUEUE_ITER (stop_reply_p
) *iter
,
5424 struct queue_iter_param
*param
= data
;
5425 ptid_t
*ptid
= param
->input
;
5427 if (ptid_match (event
->ptid
, *ptid
))
5429 param
->output
= event
;
5430 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5437 /* Remove the first reply in 'stop_reply_queue' which matches
5440 static struct stop_reply
*
5441 remote_notif_remove_queued_reply (ptid_t ptid
)
5443 struct queue_iter_param param
;
5445 param
.input
= &ptid
;
5446 param
.output
= NULL
;
5448 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5449 remote_notif_remove_once_on_match
, ¶m
);
5451 fprintf_unfiltered (gdb_stdlog
,
5452 "notif: discard queued event: 'Stop' in %s\n",
5453 target_pid_to_str (ptid
));
5455 return param
.output
;
5458 /* Look for a queued stop reply belonging to PTID. If one is found,
5459 remove it from the queue, and return it. Returns NULL if none is
5460 found. If there are still queued events left to process, tell the
5461 event loop to get back to target_wait soon. */
5463 static struct stop_reply
*
5464 queued_stop_reply (ptid_t ptid
)
5466 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5468 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5469 /* There's still at least an event left. */
5470 mark_async_event_handler (remote_async_inferior_event_token
);
5475 /* Push a fully parsed stop reply in the stop reply queue. Since we
5476 know that we now have at least one queued event left to pass to the
5477 core side, tell the event loop to get back to target_wait soon. */
5480 push_stop_reply (struct stop_reply
*new_event
)
5482 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5485 fprintf_unfiltered (gdb_stdlog
,
5486 "notif: push 'Stop' %s to queue %d\n",
5487 target_pid_to_str (new_event
->ptid
),
5488 QUEUE_length (stop_reply_p
,
5491 mark_async_event_handler (remote_async_inferior_event_token
);
5495 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5496 QUEUE_ITER (stop_reply_p
) *iter
,
5497 struct stop_reply
*event
,
5500 ptid_t
*ptid
= data
;
5502 return !(ptid_equal (*ptid
, event
->ptid
)
5503 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5506 /* Returns true if we have a stop reply for PTID. */
5509 peek_stop_reply (ptid_t ptid
)
5511 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5512 stop_reply_match_ptid_and_ws
, &ptid
);
5515 /* Skip PACKET until the next semi-colon (or end of string). */
5518 skip_to_semicolon (char *p
)
5520 while (*p
!= '\0' && *p
!= ';')
5525 /* Parse the stop reply in BUF. Either the function succeeds, and the
5526 result is stored in EVENT, or throws an error. */
5529 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5531 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5535 event
->ptid
= null_ptid
;
5536 event
->rs
= get_remote_state ();
5537 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5538 event
->ws
.value
.integer
= 0;
5539 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5540 event
->regcache
= NULL
;
5545 case 'T': /* Status with PC, SP, FP, ... */
5546 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5547 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5549 n... = register number
5550 r... = register contents
5553 p
= &buf
[3]; /* after Txx */
5559 p1
= strchr (p
, ':');
5561 error (_("Malformed packet(a) (missing colon): %s\n\
5565 error (_("Malformed packet(a) (missing register number): %s\n\
5569 /* Some "registers" are actually extended stop information.
5570 Note if you're adding a new entry here: GDB 7.9 and
5571 earlier assume that all register "numbers" that start
5572 with an hex digit are real register numbers. Make sure
5573 the server only sends such a packet if it knows the
5574 client understands it. */
5576 if (strncmp (p
, "thread", p1
- p
) == 0)
5577 event
->ptid
= read_ptid (++p1
, &p
);
5578 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5579 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5580 || (strncmp (p
, "awatch", p1
- p
) == 0))
5582 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
5583 p
= unpack_varlen_hex (++p1
, &addr
);
5584 event
->watch_data_address
= (CORE_ADDR
) addr
;
5586 else if (strncmp (p
, "swbreak", p1
- p
) == 0)
5588 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
5590 /* Make sure the stub doesn't forget to indicate support
5592 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
5593 error (_("Unexpected swbreak stop reason"));
5595 /* The value part is documented as "must be empty",
5596 though we ignore it, in case we ever decide to make
5597 use of it in a backward compatible way. */
5598 p
= skip_to_semicolon (p1
+ 1);
5600 else if (strncmp (p
, "hwbreak", p1
- p
) == 0)
5602 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
5604 /* Make sure the stub doesn't forget to indicate support
5606 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
5607 error (_("Unexpected hwbreak stop reason"));
5610 p
= skip_to_semicolon (p1
+ 1);
5612 else if (strncmp (p
, "library", p1
- p
) == 0)
5614 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5615 p
= skip_to_semicolon (p1
+ 1);
5617 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5619 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5620 /* p1 will indicate "begin" or "end", but it makes
5621 no difference for now, so ignore it. */
5622 p
= skip_to_semicolon (p1
+ 1);
5624 else if (strncmp (p
, "core", p1
- p
) == 0)
5628 p
= unpack_varlen_hex (++p1
, &c
);
5636 /* Maybe a real ``P'' register number. */
5637 p_temp
= unpack_varlen_hex (p
, &pnum
);
5638 /* If the first invalid character is the colon, we got a
5639 register number. Otherwise, it's an unknown stop
5643 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5644 cached_reg_t cached_reg
;
5647 error (_("Remote sent bad register number %s: %s\n\
5649 hex_string (pnum
), p
, buf
);
5651 cached_reg
.num
= reg
->regnum
;
5654 fieldsize
= hex2bin (p
, cached_reg
.data
,
5655 register_size (target_gdbarch (),
5658 if (fieldsize
< register_size (target_gdbarch (),
5660 warning (_("Remote reply is too short: %s"), buf
);
5662 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5666 /* Not a number. Silently skip unknown optional
5668 p
= skip_to_semicolon (p1
+ 1);
5673 error (_("Remote register badly formatted: %s\nhere: %s"),
5678 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5682 case 'S': /* Old style status, just signal only. */
5686 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5687 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5688 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5689 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5691 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5694 case 'W': /* Target exited. */
5701 /* GDB used to accept only 2 hex chars here. Stubs should
5702 only send more if they detect GDB supports multi-process
5704 p
= unpack_varlen_hex (&buf
[1], &value
);
5708 /* The remote process exited. */
5709 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5710 event
->ws
.value
.integer
= value
;
5714 /* The remote process exited with a signal. */
5715 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5716 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5717 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5719 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5722 /* If no process is specified, assume inferior_ptid. */
5723 pid
= ptid_get_pid (inferior_ptid
);
5732 else if (startswith (p
, "process:"))
5736 p
+= sizeof ("process:") - 1;
5737 unpack_varlen_hex (p
, &upid
);
5741 error (_("unknown stop reply packet: %s"), buf
);
5744 error (_("unknown stop reply packet: %s"), buf
);
5745 event
->ptid
= pid_to_ptid (pid
);
5750 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5751 error (_("No process or thread specified in stop reply: %s"), buf
);
5754 /* When the stub wants to tell GDB about a new notification reply, it
5755 sends a notification (%Stop, for example). Those can come it at
5756 any time, hence, we have to make sure that any pending
5757 putpkt/getpkt sequence we're making is finished, before querying
5758 the stub for more events with the corresponding ack command
5759 (vStopped, for example). E.g., if we started a vStopped sequence
5760 immediately upon receiving the notification, something like this
5768 1.6) <-- (registers reply to step #1.3)
5770 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5773 To solve this, whenever we parse a %Stop notification successfully,
5774 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5775 doing whatever we were doing:
5781 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5782 2.5) <-- (registers reply to step #2.3)
5784 Eventualy after step #2.5, we return to the event loop, which
5785 notices there's an event on the
5786 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5787 associated callback --- the function below. At this point, we're
5788 always safe to start a vStopped sequence. :
5791 2.7) <-- T05 thread:2
5797 remote_notif_get_pending_events (struct notif_client
*nc
)
5799 struct remote_state
*rs
= get_remote_state ();
5801 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5804 fprintf_unfiltered (gdb_stdlog
,
5805 "notif: process: '%s' ack pending event\n",
5809 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5810 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5814 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5815 if (strcmp (rs
->buf
, "OK") == 0)
5818 remote_notif_ack (nc
, rs
->buf
);
5824 fprintf_unfiltered (gdb_stdlog
,
5825 "notif: process: '%s' no pending reply\n",
5830 /* Called when it is decided that STOP_REPLY holds the info of the
5831 event that is to be returned to the core. This function always
5832 destroys STOP_REPLY. */
5835 process_stop_reply (struct stop_reply
*stop_reply
,
5836 struct target_waitstatus
*status
)
5840 *status
= stop_reply
->ws
;
5841 ptid
= stop_reply
->ptid
;
5843 /* If no thread/process was reported by the stub, assume the current
5845 if (ptid_equal (ptid
, null_ptid
))
5846 ptid
= inferior_ptid
;
5848 if (status
->kind
!= TARGET_WAITKIND_EXITED
5849 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5851 struct remote_state
*rs
= get_remote_state ();
5853 /* Expedited registers. */
5854 if (stop_reply
->regcache
)
5856 struct regcache
*regcache
5857 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5862 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5864 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5865 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5868 rs
->stop_reason
= stop_reply
->stop_reason
;
5869 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5871 remote_notice_new_inferior (ptid
, 0);
5872 demand_private_info (ptid
)->core
= stop_reply
->core
;
5875 stop_reply_xfree (stop_reply
);
5879 /* The non-stop mode version of target_wait. */
5882 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5884 struct remote_state
*rs
= get_remote_state ();
5885 struct stop_reply
*stop_reply
;
5889 /* If in non-stop mode, get out of getpkt even if a
5890 notification is received. */
5892 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5893 0 /* forever */, &is_notif
);
5896 if (ret
!= -1 && !is_notif
)
5899 case 'E': /* Error of some sort. */
5900 /* We're out of sync with the target now. Did it continue
5901 or not? We can't tell which thread it was in non-stop,
5902 so just ignore this. */
5903 warning (_("Remote failure reply: %s"), rs
->buf
);
5905 case 'O': /* Console output. */
5906 remote_console_output (rs
->buf
+ 1);
5909 warning (_("Invalid remote reply: %s"), rs
->buf
);
5913 /* Acknowledge a pending stop reply that may have arrived in the
5915 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5916 remote_notif_get_pending_events (¬if_client_stop
);
5918 /* If indeed we noticed a stop reply, we're done. */
5919 stop_reply
= queued_stop_reply (ptid
);
5920 if (stop_reply
!= NULL
)
5921 return process_stop_reply (stop_reply
, status
);
5923 /* Still no event. If we're just polling for an event, then
5924 return to the event loop. */
5925 if (options
& TARGET_WNOHANG
)
5927 status
->kind
= TARGET_WAITKIND_IGNORE
;
5928 return minus_one_ptid
;
5931 /* Otherwise do a blocking wait. */
5932 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5933 1 /* forever */, &is_notif
);
5937 /* Wait until the remote machine stops, then return, storing status in
5938 STATUS just as `wait' would. */
5941 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5943 struct remote_state
*rs
= get_remote_state ();
5944 ptid_t event_ptid
= null_ptid
;
5946 struct stop_reply
*stop_reply
;
5950 status
->kind
= TARGET_WAITKIND_IGNORE
;
5951 status
->value
.integer
= 0;
5953 stop_reply
= queued_stop_reply (ptid
);
5954 if (stop_reply
!= NULL
)
5955 return process_stop_reply (stop_reply
, status
);
5957 if (rs
->cached_wait_status
)
5958 /* Use the cached wait status, but only once. */
5959 rs
->cached_wait_status
= 0;
5965 if (!target_is_async_p ())
5967 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5968 /* If the user hit C-c before this packet, or between packets,
5969 pretend that it was hit right here. */
5970 if (check_quit_flag ())
5973 sync_remote_interrupt (SIGINT
);
5977 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5978 _never_ wait for ever -> test on target_is_async_p().
5979 However, before we do that we need to ensure that the caller
5980 knows how to take the target into/out of async mode. */
5981 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5982 wait_forever_enabled_p
, &is_notif
);
5984 if (!target_is_async_p ())
5985 signal (SIGINT
, ofunc
);
5987 /* GDB gets a notification. Return to core as this event is
5989 if (ret
!= -1 && is_notif
)
5990 return minus_one_ptid
;
5995 rs
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5997 /* We got something. */
5998 rs
->waiting_for_stop_reply
= 0;
6000 /* Assume that the target has acknowledged Ctrl-C unless we receive
6001 an 'F' or 'O' packet. */
6002 if (buf
[0] != 'F' && buf
[0] != 'O')
6003 rs
->ctrlc_pending_p
= 0;
6007 case 'E': /* Error of some sort. */
6008 /* We're out of sync with the target now. Did it continue or
6009 not? Not is more likely, so report a stop. */
6010 warning (_("Remote failure reply: %s"), buf
);
6011 status
->kind
= TARGET_WAITKIND_STOPPED
;
6012 status
->value
.sig
= GDB_SIGNAL_0
;
6014 case 'F': /* File-I/O request. */
6015 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6016 rs
->ctrlc_pending_p
= 0;
6018 case 'T': case 'S': case 'X': case 'W':
6020 struct stop_reply
*stop_reply
6021 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6024 event_ptid
= process_stop_reply (stop_reply
, status
);
6027 case 'O': /* Console output. */
6028 remote_console_output (buf
+ 1);
6030 /* The target didn't really stop; keep waiting. */
6031 rs
->waiting_for_stop_reply
= 1;
6035 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6037 /* Zero length reply means that we tried 'S' or 'C' and the
6038 remote system doesn't support it. */
6039 target_terminal_ours_for_output ();
6041 ("Can't send signals to this remote system. %s not sent.\n",
6042 gdb_signal_to_name (rs
->last_sent_signal
));
6043 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6044 target_terminal_inferior ();
6046 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6047 putpkt ((char *) buf
);
6049 /* We just told the target to resume, so a stop reply is in
6051 rs
->waiting_for_stop_reply
= 1;
6054 /* else fallthrough */
6056 warning (_("Invalid remote reply: %s"), buf
);
6058 rs
->waiting_for_stop_reply
= 1;
6062 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6064 /* Nothing interesting happened. If we're doing a non-blocking
6065 poll, we're done. Otherwise, go back to waiting. */
6066 if (options
& TARGET_WNOHANG
)
6067 return minus_one_ptid
;
6071 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6072 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6074 if (!ptid_equal (event_ptid
, null_ptid
))
6075 record_currthread (rs
, event_ptid
);
6077 event_ptid
= inferior_ptid
;
6080 /* A process exit. Invalidate our notion of current thread. */
6081 record_currthread (rs
, minus_one_ptid
);
6086 /* Wait until the remote machine stops, then return, storing status in
6087 STATUS just as `wait' would. */
6090 remote_wait (struct target_ops
*ops
,
6091 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6096 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6098 event_ptid
= remote_wait_as (ptid
, status
, options
);
6100 if (target_is_async_p ())
6102 /* If there are are events left in the queue tell the event loop
6104 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6105 mark_async_event_handler (remote_async_inferior_event_token
);
6111 /* Fetch a single register using a 'p' packet. */
6114 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6116 struct remote_state
*rs
= get_remote_state ();
6118 char regp
[MAX_REGISTER_SIZE
];
6121 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
6124 if (reg
->pnum
== -1)
6129 p
+= hexnumstr (p
, reg
->pnum
);
6132 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6136 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6140 case PACKET_UNKNOWN
:
6143 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6144 gdbarch_register_name (get_regcache_arch (regcache
),
6149 /* If this register is unfetchable, tell the regcache. */
6152 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6156 /* Otherwise, parse and supply the value. */
6162 error (_("fetch_register_using_p: early buf termination"));
6164 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6167 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6171 /* Fetch the registers included in the target's 'g' packet. */
6174 send_g_packet (void)
6176 struct remote_state
*rs
= get_remote_state ();
6179 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6180 remote_send (&rs
->buf
, &rs
->buf_size
);
6182 /* We can get out of synch in various cases. If the first character
6183 in the buffer is not a hex character, assume that has happened
6184 and try to fetch another packet to read. */
6185 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6186 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6187 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6188 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6191 fprintf_unfiltered (gdb_stdlog
,
6192 "Bad register packet; fetching a new packet\n");
6193 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6196 buf_len
= strlen (rs
->buf
);
6198 /* Sanity check the received packet. */
6199 if (buf_len
% 2 != 0)
6200 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6206 process_g_packet (struct regcache
*regcache
)
6208 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6209 struct remote_state
*rs
= get_remote_state ();
6210 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6215 buf_len
= strlen (rs
->buf
);
6217 /* Further sanity checks, with knowledge of the architecture. */
6218 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6219 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6221 /* Save the size of the packet sent to us by the target. It is used
6222 as a heuristic when determining the max size of packets that the
6223 target can safely receive. */
6224 if (rsa
->actual_register_packet_size
== 0)
6225 rsa
->actual_register_packet_size
= buf_len
;
6227 /* If this is smaller than we guessed the 'g' packet would be,
6228 update our records. A 'g' reply that doesn't include a register's
6229 value implies either that the register is not available, or that
6230 the 'p' packet must be used. */
6231 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6233 rsa
->sizeof_g_packet
= buf_len
/ 2;
6235 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6237 if (rsa
->regs
[i
].pnum
== -1)
6240 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6241 rsa
->regs
[i
].in_g_packet
= 0;
6243 rsa
->regs
[i
].in_g_packet
= 1;
6247 regs
= alloca (rsa
->sizeof_g_packet
);
6249 /* Unimplemented registers read as all bits zero. */
6250 memset (regs
, 0, rsa
->sizeof_g_packet
);
6252 /* Reply describes registers byte by byte, each byte encoded as two
6253 hex characters. Suck them all up, then supply them to the
6254 register cacheing/storage mechanism. */
6257 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6259 if (p
[0] == 0 || p
[1] == 0)
6260 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6261 internal_error (__FILE__
, __LINE__
,
6262 _("unexpected end of 'g' packet reply"));
6264 if (p
[0] == 'x' && p
[1] == 'x')
6265 regs
[i
] = 0; /* 'x' */
6267 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6271 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6273 struct packet_reg
*r
= &rsa
->regs
[i
];
6277 if (r
->offset
* 2 >= strlen (rs
->buf
))
6278 /* This shouldn't happen - we adjusted in_g_packet above. */
6279 internal_error (__FILE__
, __LINE__
,
6280 _("unexpected end of 'g' packet reply"));
6281 else if (rs
->buf
[r
->offset
* 2] == 'x')
6283 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6284 /* The register isn't available, mark it as such (at
6285 the same time setting the value to zero). */
6286 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6289 regcache_raw_supply (regcache
, r
->regnum
,
6296 fetch_registers_using_g (struct regcache
*regcache
)
6299 process_g_packet (regcache
);
6302 /* Make the remote selected traceframe match GDB's selected
6306 set_remote_traceframe (void)
6309 struct remote_state
*rs
= get_remote_state ();
6311 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6314 /* Avoid recursion, remote_trace_find calls us again. */
6315 rs
->remote_traceframe_number
= get_traceframe_number ();
6317 newnum
= target_trace_find (tfind_number
,
6318 get_traceframe_number (), 0, 0, NULL
);
6320 /* Should not happen. If it does, all bets are off. */
6321 if (newnum
!= get_traceframe_number ())
6322 warning (_("could not set remote traceframe"));
6326 remote_fetch_registers (struct target_ops
*ops
,
6327 struct regcache
*regcache
, int regnum
)
6329 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6332 set_remote_traceframe ();
6333 set_general_thread (inferior_ptid
);
6337 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6339 gdb_assert (reg
!= NULL
);
6341 /* If this register might be in the 'g' packet, try that first -
6342 we are likely to read more than one register. If this is the
6343 first 'g' packet, we might be overly optimistic about its
6344 contents, so fall back to 'p'. */
6345 if (reg
->in_g_packet
)
6347 fetch_registers_using_g (regcache
);
6348 if (reg
->in_g_packet
)
6352 if (fetch_register_using_p (regcache
, reg
))
6355 /* This register is not available. */
6356 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6361 fetch_registers_using_g (regcache
);
6363 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6364 if (!rsa
->regs
[i
].in_g_packet
)
6365 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6367 /* This register is not available. */
6368 regcache_raw_supply (regcache
, i
, NULL
);
6372 /* Prepare to store registers. Since we may send them all (using a
6373 'G' request), we have to read out the ones we don't want to change
6377 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6379 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6381 gdb_byte buf
[MAX_REGISTER_SIZE
];
6383 /* Make sure the entire registers array is valid. */
6384 switch (packet_support (PACKET_P
))
6386 case PACKET_DISABLE
:
6387 case PACKET_SUPPORT_UNKNOWN
:
6388 /* Make sure all the necessary registers are cached. */
6389 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6390 if (rsa
->regs
[i
].in_g_packet
)
6391 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6398 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6399 packet was not recognized. */
6402 store_register_using_P (const struct regcache
*regcache
,
6403 struct packet_reg
*reg
)
6405 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6406 struct remote_state
*rs
= get_remote_state ();
6407 /* Try storing a single register. */
6408 char *buf
= rs
->buf
;
6409 gdb_byte regp
[MAX_REGISTER_SIZE
];
6412 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
6415 if (reg
->pnum
== -1)
6418 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6419 p
= buf
+ strlen (buf
);
6420 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6421 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6423 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6425 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6430 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6431 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6432 case PACKET_UNKNOWN
:
6435 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6439 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6440 contents of the register cache buffer. FIXME: ignores errors. */
6443 store_registers_using_G (const struct regcache
*regcache
)
6445 struct remote_state
*rs
= get_remote_state ();
6446 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6450 /* Extract all the registers in the regcache copying them into a
6455 regs
= alloca (rsa
->sizeof_g_packet
);
6456 memset (regs
, 0, rsa
->sizeof_g_packet
);
6457 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6459 struct packet_reg
*r
= &rsa
->regs
[i
];
6462 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6466 /* Command describes registers byte by byte,
6467 each byte encoded as two hex characters. */
6470 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6472 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6474 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6475 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6476 error (_("Could not write registers; remote failure reply '%s'"),
6480 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6481 of the register cache buffer. FIXME: ignores errors. */
6484 remote_store_registers (struct target_ops
*ops
,
6485 struct regcache
*regcache
, int regnum
)
6487 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6490 set_remote_traceframe ();
6491 set_general_thread (inferior_ptid
);
6495 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6497 gdb_assert (reg
!= NULL
);
6499 /* Always prefer to store registers using the 'P' packet if
6500 possible; we often change only a small number of registers.
6501 Sometimes we change a larger number; we'd need help from a
6502 higher layer to know to use 'G'. */
6503 if (store_register_using_P (regcache
, reg
))
6506 /* For now, don't complain if we have no way to write the
6507 register. GDB loses track of unavailable registers too
6508 easily. Some day, this may be an error. We don't have
6509 any way to read the register, either... */
6510 if (!reg
->in_g_packet
)
6513 store_registers_using_G (regcache
);
6517 store_registers_using_G (regcache
);
6519 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6520 if (!rsa
->regs
[i
].in_g_packet
)
6521 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6522 /* See above for why we do not issue an error here. */
6527 /* Return the number of hex digits in num. */
6530 hexnumlen (ULONGEST num
)
6534 for (i
= 0; num
!= 0; i
++)
6540 /* Set BUF to the minimum number of hex digits representing NUM. */
6543 hexnumstr (char *buf
, ULONGEST num
)
6545 int len
= hexnumlen (num
);
6547 return hexnumnstr (buf
, num
, len
);
6551 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6554 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6560 for (i
= width
- 1; i
>= 0; i
--)
6562 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6569 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6572 remote_address_masked (CORE_ADDR addr
)
6574 unsigned int address_size
= remote_address_size
;
6576 /* If "remoteaddresssize" was not set, default to target address size. */
6578 address_size
= gdbarch_addr_bit (target_gdbarch ());
6580 if (address_size
> 0
6581 && address_size
< (sizeof (ULONGEST
) * 8))
6583 /* Only create a mask when that mask can safely be constructed
6584 in a ULONGEST variable. */
6587 mask
= (mask
<< address_size
) - 1;
6593 /* Determine whether the remote target supports binary downloading.
6594 This is accomplished by sending a no-op memory write of zero length
6595 to the target at the specified address. It does not suffice to send
6596 the whole packet, since many stubs strip the eighth bit and
6597 subsequently compute a wrong checksum, which causes real havoc with
6600 NOTE: This can still lose if the serial line is not eight-bit
6601 clean. In cases like this, the user should clear "remote
6605 check_binary_download (CORE_ADDR addr
)
6607 struct remote_state
*rs
= get_remote_state ();
6609 switch (packet_support (PACKET_X
))
6611 case PACKET_DISABLE
:
6615 case PACKET_SUPPORT_UNKNOWN
:
6621 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6623 p
+= hexnumstr (p
, (ULONGEST
) 0);
6627 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6628 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6630 if (rs
->buf
[0] == '\0')
6633 fprintf_unfiltered (gdb_stdlog
,
6634 "binary downloading NOT "
6635 "supported by target\n");
6636 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6641 fprintf_unfiltered (gdb_stdlog
,
6642 "binary downloading supported by target\n");
6643 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6650 /* Write memory data directly to the remote machine.
6651 This does not inform the data cache; the data cache uses this.
6652 HEADER is the starting part of the packet.
6653 MEMADDR is the address in the remote memory space.
6654 MYADDR is the address of the buffer in our space.
6655 LEN is the number of bytes.
6656 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6657 should send data as binary ('X'), or hex-encoded ('M').
6659 The function creates packet of the form
6660 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6662 where encoding of <DATA> is termined by PACKET_FORMAT.
6664 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6667 Return the transferred status, error or OK (an
6668 'enum target_xfer_status' value). Save the number of bytes
6669 transferred in *XFERED_LEN. Only transfer a single packet. */
6671 static enum target_xfer_status
6672 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6673 const gdb_byte
*myaddr
, ULONGEST len
,
6674 ULONGEST
*xfered_len
, char packet_format
,
6677 struct remote_state
*rs
= get_remote_state ();
6687 if (packet_format
!= 'X' && packet_format
!= 'M')
6688 internal_error (__FILE__
, __LINE__
,
6689 _("remote_write_bytes_aux: bad packet format"));
6692 return TARGET_XFER_EOF
;
6694 payload_size
= get_memory_write_packet_size ();
6696 /* The packet buffer will be large enough for the payload;
6697 get_memory_packet_size ensures this. */
6700 /* Compute the size of the actual payload by subtracting out the
6701 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6703 payload_size
-= strlen ("$,:#NN");
6705 /* The comma won't be used. */
6707 header_length
= strlen (header
);
6708 payload_size
-= header_length
;
6709 payload_size
-= hexnumlen (memaddr
);
6711 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6713 strcat (rs
->buf
, header
);
6714 p
= rs
->buf
+ strlen (header
);
6716 /* Compute a best guess of the number of bytes actually transfered. */
6717 if (packet_format
== 'X')
6719 /* Best guess at number of bytes that will fit. */
6720 todo
= min (len
, payload_size
);
6722 payload_size
-= hexnumlen (todo
);
6723 todo
= min (todo
, payload_size
);
6727 /* Num bytes that will fit. */
6728 todo
= min (len
, payload_size
/ 2);
6730 payload_size
-= hexnumlen (todo
);
6731 todo
= min (todo
, payload_size
/ 2);
6735 internal_error (__FILE__
, __LINE__
,
6736 _("minimum packet size too small to write data"));
6738 /* If we already need another packet, then try to align the end
6739 of this packet to a useful boundary. */
6740 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6741 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6743 /* Append "<memaddr>". */
6744 memaddr
= remote_address_masked (memaddr
);
6745 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6752 /* Append <len>. Retain the location/size of <len>. It may need to
6753 be adjusted once the packet body has been created. */
6755 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6763 /* Append the packet body. */
6764 if (packet_format
== 'X')
6766 /* Binary mode. Send target system values byte by byte, in
6767 increasing byte addresses. Only escape certain critical
6769 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6770 &nr_bytes
, payload_size
);
6772 /* If not all TODO bytes fit, then we'll need another packet. Make
6773 a second try to keep the end of the packet aligned. Don't do
6774 this if the packet is tiny. */
6775 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6779 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6781 if (new_nr_bytes
!= nr_bytes
)
6782 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6783 (gdb_byte
*) p
, &nr_bytes
,
6787 p
+= payload_length
;
6788 if (use_length
&& nr_bytes
< todo
)
6790 /* Escape chars have filled up the buffer prematurely,
6791 and we have actually sent fewer bytes than planned.
6792 Fix-up the length field of the packet. Use the same
6793 number of characters as before. */
6794 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6795 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6800 /* Normal mode: Send target system values byte by byte, in
6801 increasing byte addresses. Each byte is encoded as a two hex
6803 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6807 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6808 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6810 if (rs
->buf
[0] == 'E')
6811 return TARGET_XFER_E_IO
;
6813 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6814 fewer bytes than we'd planned. */
6815 *xfered_len
= (ULONGEST
) nr_bytes
;
6816 return TARGET_XFER_OK
;
6819 /* Write memory data directly to the remote machine.
6820 This does not inform 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. Only transfer a single packet. */
6829 static enum target_xfer_status
6830 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6831 ULONGEST
*xfered_len
)
6833 char *packet_format
= 0;
6835 /* Check whether the target supports binary download. */
6836 check_binary_download (memaddr
);
6838 switch (packet_support (PACKET_X
))
6841 packet_format
= "X";
6843 case PACKET_DISABLE
:
6844 packet_format
= "M";
6846 case PACKET_SUPPORT_UNKNOWN
:
6847 internal_error (__FILE__
, __LINE__
,
6848 _("remote_write_bytes: bad internal state"));
6850 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6853 return remote_write_bytes_aux (packet_format
,
6854 memaddr
, myaddr
, len
, xfered_len
,
6855 packet_format
[0], 1);
6858 /* Read memory data directly from the remote machine.
6859 This does not use the data cache; the data cache uses this.
6860 MEMADDR is the address in the remote memory space.
6861 MYADDR is the address of the buffer in our space.
6862 LEN is the number of bytes.
6864 Return the transferred status, error or OK (an
6865 'enum target_xfer_status' value). Save the number of bytes
6866 transferred in *XFERED_LEN. */
6868 static enum target_xfer_status
6869 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6870 ULONGEST
*xfered_len
)
6872 struct remote_state
*rs
= get_remote_state ();
6873 int max_buf_size
; /* Max size of packet output buffer. */
6878 max_buf_size
= get_memory_read_packet_size ();
6879 /* The packet buffer will be large enough for the payload;
6880 get_memory_packet_size ensures this. */
6882 /* Number if bytes that will fit. */
6883 todo
= min (len
, max_buf_size
/ 2);
6885 /* Construct "m"<memaddr>","<len>". */
6886 memaddr
= remote_address_masked (memaddr
);
6889 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6891 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6894 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6895 if (rs
->buf
[0] == 'E'
6896 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6897 && rs
->buf
[3] == '\0')
6898 return TARGET_XFER_E_IO
;
6899 /* Reply describes memory byte by byte, each byte encoded as two hex
6902 i
= hex2bin (p
, myaddr
, todo
);
6903 /* Return what we have. Let higher layers handle partial reads. */
6904 *xfered_len
= (ULONGEST
) i
;
6905 return TARGET_XFER_OK
;
6908 /* Using the set of read-only target sections of remote, read live
6911 For interface/parameters/return description see target.h,
6914 static enum target_xfer_status
6915 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
6916 ULONGEST memaddr
, ULONGEST len
,
6917 ULONGEST
*xfered_len
)
6919 struct target_section
*secp
;
6920 struct target_section_table
*table
;
6922 secp
= target_section_by_addr (ops
, memaddr
);
6924 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
6925 secp
->the_bfd_section
)
6928 struct target_section
*p
;
6929 ULONGEST memend
= memaddr
+ len
;
6931 table
= target_get_section_table (ops
);
6933 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
6935 if (memaddr
>= p
->addr
)
6937 if (memend
<= p
->endaddr
)
6939 /* Entire transfer is within this section. */
6940 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6943 else if (memaddr
>= p
->endaddr
)
6945 /* This section ends before the transfer starts. */
6950 /* This section overlaps the transfer. Just do half. */
6951 len
= p
->endaddr
- memaddr
;
6952 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6959 return TARGET_XFER_EOF
;
6962 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6963 first if the requested memory is unavailable in traceframe.
6964 Otherwise, fall back to remote_read_bytes_1. */
6966 static enum target_xfer_status
6967 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
6968 gdb_byte
*myaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
6971 return TARGET_XFER_EOF
;
6973 if (get_traceframe_number () != -1)
6975 VEC(mem_range_s
) *available
;
6977 /* If we fail to get the set of available memory, then the
6978 target does not support querying traceframe info, and so we
6979 attempt reading from the traceframe anyway (assuming the
6980 target implements the old QTro packet then). */
6981 if (traceframe_available_memory (&available
, memaddr
, len
))
6983 struct cleanup
*old_chain
;
6985 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
6987 if (VEC_empty (mem_range_s
, available
)
6988 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
6990 enum target_xfer_status res
;
6992 /* Don't read into the traceframe's available
6994 if (!VEC_empty (mem_range_s
, available
))
6996 LONGEST oldlen
= len
;
6998 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
6999 gdb_assert (len
<= oldlen
);
7002 do_cleanups (old_chain
);
7004 /* This goes through the topmost target again. */
7005 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
7007 if (res
== TARGET_XFER_OK
)
7008 return TARGET_XFER_OK
;
7011 /* No use trying further, we know some memory starting
7012 at MEMADDR isn't available. */
7014 return TARGET_XFER_UNAVAILABLE
;
7018 /* Don't try to read more than how much is available, in
7019 case the target implements the deprecated QTro packet to
7020 cater for older GDBs (the target's knowledge of read-only
7021 sections may be outdated by now). */
7022 len
= VEC_index (mem_range_s
, available
, 0)->length
;
7024 do_cleanups (old_chain
);
7028 return remote_read_bytes_1 (memaddr
, myaddr
, len
, xfered_len
);
7033 /* Sends a packet with content determined by the printf format string
7034 FORMAT and the remaining arguments, then gets the reply. Returns
7035 whether the packet was a success, a failure, or unknown. */
7037 static enum packet_result
remote_send_printf (const char *format
, ...)
7038 ATTRIBUTE_PRINTF (1, 2);
7040 static enum packet_result
7041 remote_send_printf (const char *format
, ...)
7043 struct remote_state
*rs
= get_remote_state ();
7044 int max_size
= get_remote_packet_size ();
7047 va_start (ap
, format
);
7050 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7051 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7053 if (putpkt (rs
->buf
) < 0)
7054 error (_("Communication problem with target."));
7057 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7059 return packet_check_result (rs
->buf
);
7063 restore_remote_timeout (void *p
)
7065 int value
= *(int *)p
;
7067 remote_timeout
= value
;
7070 /* Flash writing can take quite some time. We'll set
7071 effectively infinite timeout for flash operations.
7072 In future, we'll need to decide on a better approach. */
7073 static const int remote_flash_timeout
= 1000;
7076 remote_flash_erase (struct target_ops
*ops
,
7077 ULONGEST address
, LONGEST length
)
7079 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7080 int saved_remote_timeout
= remote_timeout
;
7081 enum packet_result ret
;
7082 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7083 &saved_remote_timeout
);
7085 remote_timeout
= remote_flash_timeout
;
7087 ret
= remote_send_printf ("vFlashErase:%s,%s",
7088 phex (address
, addr_size
),
7092 case PACKET_UNKNOWN
:
7093 error (_("Remote target does not support flash erase"));
7095 error (_("Error erasing flash with vFlashErase packet"));
7100 do_cleanups (back_to
);
7103 static enum target_xfer_status
7104 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
7105 ULONGEST length
, ULONGEST
*xfered_len
,
7106 const gdb_byte
*data
)
7108 int saved_remote_timeout
= remote_timeout
;
7109 enum target_xfer_status ret
;
7110 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7111 &saved_remote_timeout
);
7113 remote_timeout
= remote_flash_timeout
;
7114 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
7116 do_cleanups (back_to
);
7122 remote_flash_done (struct target_ops
*ops
)
7124 int saved_remote_timeout
= remote_timeout
;
7126 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7127 &saved_remote_timeout
);
7129 remote_timeout
= remote_flash_timeout
;
7130 ret
= remote_send_printf ("vFlashDone");
7131 do_cleanups (back_to
);
7135 case PACKET_UNKNOWN
:
7136 error (_("Remote target does not support vFlashDone"));
7138 error (_("Error finishing flash operation"));
7145 remote_files_info (struct target_ops
*ignore
)
7147 puts_filtered ("Debugging a target over a serial line.\n");
7150 /* Stuff for dealing with the packets which are part of this protocol.
7151 See comment at top of file for details. */
7153 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7154 error to higher layers. Called when a serial error is detected.
7155 The exception message is STRING, followed by a colon and a blank,
7156 the system error message for errno at function entry and final dot
7157 for output compatibility with throw_perror_with_name. */
7160 unpush_and_perror (const char *string
)
7162 int saved_errno
= errno
;
7164 remote_unpush_target ();
7165 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7166 safe_strerror (saved_errno
));
7169 /* Read a single character from the remote end. */
7172 readchar (int timeout
)
7175 struct remote_state
*rs
= get_remote_state ();
7177 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7182 switch ((enum serial_rc
) ch
)
7185 remote_unpush_target ();
7186 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7189 unpush_and_perror (_("Remote communication error. "
7190 "Target disconnected."));
7192 case SERIAL_TIMEOUT
:
7198 /* Wrapper for serial_write that closes the target and throws if
7202 remote_serial_write (const char *str
, int len
)
7204 struct remote_state
*rs
= get_remote_state ();
7206 if (serial_write (rs
->remote_desc
, str
, len
))
7208 unpush_and_perror (_("Remote communication error. "
7209 "Target disconnected."));
7213 /* Send the command in *BUF to the remote machine, and read the reply
7214 into *BUF. Report an error if we get an error reply. Resize
7215 *BUF using xrealloc if necessary to hold the result, and update
7219 remote_send (char **buf
,
7223 getpkt (buf
, sizeof_buf
, 0);
7225 if ((*buf
)[0] == 'E')
7226 error (_("Remote failure reply: %s"), *buf
);
7229 /* Return a pointer to an xmalloc'ed string representing an escaped
7230 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7231 etc. The caller is responsible for releasing the returned
7235 escape_buffer (const char *buf
, int n
)
7237 struct cleanup
*old_chain
;
7238 struct ui_file
*stb
;
7241 stb
= mem_fileopen ();
7242 old_chain
= make_cleanup_ui_file_delete (stb
);
7244 fputstrn_unfiltered (buf
, n
, '\\', stb
);
7245 str
= ui_file_xstrdup (stb
, NULL
);
7246 do_cleanups (old_chain
);
7250 /* Display a null-terminated packet on stdout, for debugging, using C
7254 print_packet (const char *buf
)
7256 puts_filtered ("\"");
7257 fputstr_filtered (buf
, '"', gdb_stdout
);
7258 puts_filtered ("\"");
7262 putpkt (const char *buf
)
7264 return putpkt_binary (buf
, strlen (buf
));
7267 /* Send a packet to the remote machine, with error checking. The data
7268 of the packet is in BUF. The string in BUF can be at most
7269 get_remote_packet_size () - 5 to account for the $, # and checksum,
7270 and for a possible /0 if we are debugging (remote_debug) and want
7271 to print the sent packet as a string. */
7274 putpkt_binary (const char *buf
, int cnt
)
7276 struct remote_state
*rs
= get_remote_state ();
7278 unsigned char csum
= 0;
7279 char *buf2
= alloca (cnt
+ 6);
7286 /* Catch cases like trying to read memory or listing threads while
7287 we're waiting for a stop reply. The remote server wouldn't be
7288 ready to handle this request, so we'd hang and timeout. We don't
7289 have to worry about this in synchronous mode, because in that
7290 case it's not possible to issue a command while the target is
7291 running. This is not a problem in non-stop mode, because in that
7292 case, the stub is always ready to process serial input. */
7293 if (!non_stop
&& target_is_async_p () && rs
->waiting_for_stop_reply
)
7295 error (_("Cannot execute this command while the target is running.\n"
7296 "Use the \"interrupt\" command to stop the target\n"
7297 "and then try again."));
7300 /* We're sending out a new packet. Make sure we don't look at a
7301 stale cached response. */
7302 rs
->cached_wait_status
= 0;
7304 /* Copy the packet into buffer BUF2, encapsulating it
7305 and giving it a checksum. */
7310 for (i
= 0; i
< cnt
; i
++)
7316 *p
++ = tohex ((csum
>> 4) & 0xf);
7317 *p
++ = tohex (csum
& 0xf);
7319 /* Send it over and over until we get a positive ack. */
7323 int started_error_output
= 0;
7327 struct cleanup
*old_chain
;
7331 str
= escape_buffer (buf2
, p
- buf2
);
7332 old_chain
= make_cleanup (xfree
, str
);
7333 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7334 gdb_flush (gdb_stdlog
);
7335 do_cleanups (old_chain
);
7337 remote_serial_write (buf2
, p
- buf2
);
7339 /* If this is a no acks version of the remote protocol, send the
7340 packet and move on. */
7344 /* Read until either a timeout occurs (-2) or '+' is read.
7345 Handle any notification that arrives in the mean time. */
7348 ch
= readchar (remote_timeout
);
7356 case SERIAL_TIMEOUT
:
7359 if (started_error_output
)
7361 putchar_unfiltered ('\n');
7362 started_error_output
= 0;
7371 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7375 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7377 case SERIAL_TIMEOUT
:
7381 break; /* Retransmit buffer. */
7385 fprintf_unfiltered (gdb_stdlog
,
7386 "Packet instead of Ack, ignoring it\n");
7387 /* It's probably an old response sent because an ACK
7388 was lost. Gobble up the packet and ack it so it
7389 doesn't get retransmitted when we resend this
7392 remote_serial_write ("+", 1);
7393 continue; /* Now, go look for +. */
7400 /* If we got a notification, handle it, and go back to looking
7402 /* We've found the start of a notification. Now
7403 collect the data. */
7404 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7409 struct cleanup
*old_chain
;
7412 str
= escape_buffer (rs
->buf
, val
);
7413 old_chain
= make_cleanup (xfree
, str
);
7414 fprintf_unfiltered (gdb_stdlog
,
7415 " Notification received: %s\n",
7417 do_cleanups (old_chain
);
7419 handle_notification (rs
->notif_state
, rs
->buf
);
7420 /* We're in sync now, rewait for the ack. */
7427 if (!started_error_output
)
7429 started_error_output
= 1;
7430 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7432 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7433 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7442 if (!started_error_output
)
7444 started_error_output
= 1;
7445 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7447 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7451 break; /* Here to retransmit. */
7455 /* This is wrong. If doing a long backtrace, the user should be
7456 able to get out next time we call QUIT, without anything as
7457 violent as interrupt_query. If we want to provide a way out of
7458 here without getting to the next QUIT, it should be based on
7459 hitting ^C twice as in remote_wait. */
7470 /* Come here after finding the start of a frame when we expected an
7471 ack. Do our best to discard the rest of this packet. */
7480 c
= readchar (remote_timeout
);
7483 case SERIAL_TIMEOUT
:
7484 /* Nothing we can do. */
7487 /* Discard the two bytes of checksum and stop. */
7488 c
= readchar (remote_timeout
);
7490 c
= readchar (remote_timeout
);
7493 case '*': /* Run length encoding. */
7494 /* Discard the repeat count. */
7495 c
= readchar (remote_timeout
);
7500 /* A regular character. */
7506 /* Come here after finding the start of the frame. Collect the rest
7507 into *BUF, verifying the checksum, length, and handling run-length
7508 compression. NUL terminate the buffer. If there is not enough room,
7509 expand *BUF using xrealloc.
7511 Returns -1 on error, number of characters in buffer (ignoring the
7512 trailing NULL) on success. (could be extended to return one of the
7513 SERIAL status indications). */
7516 read_frame (char **buf_p
,
7523 struct remote_state
*rs
= get_remote_state ();
7530 c
= readchar (remote_timeout
);
7533 case SERIAL_TIMEOUT
:
7535 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7539 fputs_filtered ("Saw new packet start in middle of old one\n",
7541 return -1; /* Start a new packet, count retries. */
7544 unsigned char pktcsum
;
7550 check_0
= readchar (remote_timeout
);
7552 check_1
= readchar (remote_timeout
);
7554 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7557 fputs_filtered ("Timeout in checksum, retrying\n",
7561 else if (check_0
< 0 || check_1
< 0)
7564 fputs_filtered ("Communication error in checksum\n",
7569 /* Don't recompute the checksum; with no ack packets we
7570 don't have any way to indicate a packet retransmission
7575 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7576 if (csum
== pktcsum
)
7581 struct cleanup
*old_chain
;
7584 str
= escape_buffer (buf
, bc
);
7585 old_chain
= make_cleanup (xfree
, str
);
7586 fprintf_unfiltered (gdb_stdlog
,
7587 "Bad checksum, sentsum=0x%x, "
7588 "csum=0x%x, buf=%s\n",
7589 pktcsum
, csum
, str
);
7590 do_cleanups (old_chain
);
7592 /* Number of characters in buffer ignoring trailing
7596 case '*': /* Run length encoding. */
7601 c
= readchar (remote_timeout
);
7603 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7605 /* The character before ``*'' is repeated. */
7607 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7609 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7611 /* Make some more room in the buffer. */
7612 *sizeof_buf
+= repeat
;
7613 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7617 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7623 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7627 if (bc
>= *sizeof_buf
- 1)
7629 /* Make some more room in the buffer. */
7631 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7642 /* Read a packet from the remote machine, with error checking, and
7643 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7644 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7645 rather than timing out; this is used (in synchronous mode) to wait
7646 for a target that is is executing user code to stop. */
7647 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7648 don't have to change all the calls to getpkt to deal with the
7649 return value, because at the moment I don't know what the right
7650 thing to do it for those. */
7658 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7662 /* Read a packet from the remote machine, with error checking, and
7663 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7664 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7665 rather than timing out; this is used (in synchronous mode) to wait
7666 for a target that is is executing user code to stop. If FOREVER ==
7667 0, this function is allowed to time out gracefully and return an
7668 indication of this to the caller. Otherwise return the number of
7669 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7670 enough reason to return to the caller. *IS_NOTIF is an output
7671 boolean that indicates whether *BUF holds a notification or not
7672 (a regular packet). */
7675 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7676 int expecting_notif
, int *is_notif
)
7678 struct remote_state
*rs
= get_remote_state ();
7684 /* We're reading a new response. Make sure we don't look at a
7685 previously cached response. */
7686 rs
->cached_wait_status
= 0;
7688 strcpy (*buf
, "timeout");
7691 timeout
= watchdog
> 0 ? watchdog
: -1;
7692 else if (expecting_notif
)
7693 timeout
= 0; /* There should already be a char in the buffer. If
7696 timeout
= remote_timeout
;
7700 /* Process any number of notifications, and then return when
7704 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7706 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7708 /* This can loop forever if the remote side sends us
7709 characters continuously, but if it pauses, we'll get
7710 SERIAL_TIMEOUT from readchar because of timeout. Then
7711 we'll count that as a retry.
7713 Note that even when forever is set, we will only wait
7714 forever prior to the start of a packet. After that, we
7715 expect characters to arrive at a brisk pace. They should
7716 show up within remote_timeout intervals. */
7718 c
= readchar (timeout
);
7719 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7721 if (c
== SERIAL_TIMEOUT
)
7723 if (expecting_notif
)
7724 return -1; /* Don't complain, it's normal to not get
7725 anything in this case. */
7727 if (forever
) /* Watchdog went off? Kill the target. */
7730 remote_unpush_target ();
7731 throw_error (TARGET_CLOSE_ERROR
,
7732 _("Watchdog timeout has expired. "
7733 "Target detached."));
7736 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7740 /* We've found the start of a packet or notification.
7741 Now collect the data. */
7742 val
= read_frame (buf
, sizeof_buf
);
7747 remote_serial_write ("-", 1);
7750 if (tries
> MAX_TRIES
)
7752 /* We have tried hard enough, and just can't receive the
7753 packet/notification. Give up. */
7754 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7756 /* Skip the ack char if we're in no-ack mode. */
7757 if (!rs
->noack_mode
)
7758 remote_serial_write ("+", 1);
7762 /* If we got an ordinary packet, return that to our caller. */
7767 struct cleanup
*old_chain
;
7770 str
= escape_buffer (*buf
, val
);
7771 old_chain
= make_cleanup (xfree
, str
);
7772 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7773 do_cleanups (old_chain
);
7776 /* Skip the ack char if we're in no-ack mode. */
7777 if (!rs
->noack_mode
)
7778 remote_serial_write ("+", 1);
7779 if (is_notif
!= NULL
)
7784 /* If we got a notification, handle it, and go back to looking
7788 gdb_assert (c
== '%');
7792 struct cleanup
*old_chain
;
7795 str
= escape_buffer (*buf
, val
);
7796 old_chain
= make_cleanup (xfree
, str
);
7797 fprintf_unfiltered (gdb_stdlog
,
7798 " Notification received: %s\n",
7800 do_cleanups (old_chain
);
7802 if (is_notif
!= NULL
)
7805 handle_notification (rs
->notif_state
, *buf
);
7807 /* Notifications require no acknowledgement. */
7809 if (expecting_notif
)
7816 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7818 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7822 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7825 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7831 remote_kill (struct target_ops
*ops
)
7833 volatile struct gdb_exception ex
;
7835 /* Catch errors so the user can quit from gdb even when we
7836 aren't on speaking terms with the remote system. */
7837 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7843 if (ex
.error
== TARGET_CLOSE_ERROR
)
7845 /* If we got an (EOF) error that caused the target
7846 to go away, then we're done, that's what we wanted.
7847 "k" is susceptible to cause a premature EOF, given
7848 that the remote server isn't actually required to
7849 reply to "k", and it can happen that it doesn't
7850 even get to reply ACK to the "k". */
7854 /* Otherwise, something went wrong. We didn't actually kill
7855 the target. Just propagate the exception, and let the
7856 user or higher layers decide what to do. */
7857 throw_exception (ex
);
7860 /* We've killed the remote end, we get to mourn it. Since this is
7861 target remote, single-process, mourning the inferior also
7862 unpushes remote_ops. */
7863 target_mourn_inferior ();
7867 remote_vkill (int pid
, struct remote_state
*rs
)
7869 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
7872 /* Tell the remote target to detach. */
7873 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7875 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7877 switch (packet_ok (rs
->buf
,
7878 &remote_protocol_packets
[PACKET_vKill
]))
7884 case PACKET_UNKNOWN
:
7887 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7892 extended_remote_kill (struct target_ops
*ops
)
7895 int pid
= ptid_get_pid (inferior_ptid
);
7896 struct remote_state
*rs
= get_remote_state ();
7898 res
= remote_vkill (pid
, rs
);
7899 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7901 /* Don't try 'k' on a multi-process aware stub -- it has no way
7902 to specify the pid. */
7906 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7907 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7910 /* Don't wait for it to die. I'm not really sure it matters whether
7911 we do or not. For the existing stubs, kill is a noop. */
7917 error (_("Can't kill process"));
7919 target_mourn_inferior ();
7923 remote_mourn (struct target_ops
*ops
)
7925 remote_mourn_1 (ops
);
7928 /* Worker function for remote_mourn. */
7930 remote_mourn_1 (struct target_ops
*target
)
7932 unpush_target (target
);
7934 /* remote_close takes care of doing most of the clean up. */
7935 generic_mourn_inferior ();
7939 extended_remote_mourn_1 (struct target_ops
*target
)
7941 struct remote_state
*rs
= get_remote_state ();
7943 /* In case we got here due to an error, but we're going to stay
7945 rs
->waiting_for_stop_reply
= 0;
7947 /* If the current general thread belonged to the process we just
7948 detached from or has exited, the remote side current general
7949 thread becomes undefined. Considering a case like this:
7951 - We just got here due to a detach.
7952 - The process that we're detaching from happens to immediately
7953 report a global breakpoint being hit in non-stop mode, in the
7954 same thread we had selected before.
7955 - GDB attaches to this process again.
7956 - This event happens to be the next event we handle.
7958 GDB would consider that the current general thread didn't need to
7959 be set on the stub side (with Hg), since for all it knew,
7960 GENERAL_THREAD hadn't changed.
7962 Notice that although in all-stop mode, the remote server always
7963 sets the current thread to the thread reporting the stop event,
7964 that doesn't happen in non-stop mode; in non-stop, the stub *must
7965 not* change the current thread when reporting a breakpoint hit,
7966 due to the decoupling of event reporting and event handling.
7968 To keep things simple, we always invalidate our notion of the
7970 record_currthread (rs
, minus_one_ptid
);
7972 /* Unlike "target remote", we do not want to unpush the target; then
7973 the next time the user says "run", we won't be connected. */
7975 /* Call common code to mark the inferior as not running. */
7976 generic_mourn_inferior ();
7978 if (!have_inferiors ())
7980 if (!remote_multi_process_p (rs
))
7982 /* Check whether the target is running now - some remote stubs
7983 automatically restart after kill. */
7985 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7987 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7989 /* Assume that the target has been restarted. Set
7990 inferior_ptid so that bits of core GDB realizes
7991 there's something here, e.g., so that the user can
7992 say "kill" again. */
7993 inferior_ptid
= magic_null_ptid
;
8000 extended_remote_mourn (struct target_ops
*ops
)
8002 extended_remote_mourn_1 (ops
);
8006 extended_remote_supports_disable_randomization (struct target_ops
*self
)
8008 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
8012 extended_remote_disable_randomization (int val
)
8014 struct remote_state
*rs
= get_remote_state ();
8017 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
8020 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
8022 error (_("Target does not support QDisableRandomization."));
8023 if (strcmp (reply
, "OK") != 0)
8024 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
8028 extended_remote_run (char *args
)
8030 struct remote_state
*rs
= get_remote_state ();
8033 /* If the user has disabled vRun support, or we have detected that
8034 support is not available, do not try it. */
8035 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
8038 strcpy (rs
->buf
, "vRun;");
8039 len
= strlen (rs
->buf
);
8041 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
8042 error (_("Remote file name too long for run packet"));
8043 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
8044 strlen (remote_exec_file
));
8046 gdb_assert (args
!= NULL
);
8049 struct cleanup
*back_to
;
8053 argv
= gdb_buildargv (args
);
8054 back_to
= make_cleanup_freeargv (argv
);
8055 for (i
= 0; argv
[i
] != NULL
; i
++)
8057 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8058 error (_("Argument list too long for run packet"));
8059 rs
->buf
[len
++] = ';';
8060 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
8063 do_cleanups (back_to
);
8066 rs
->buf
[len
++] = '\0';
8069 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8071 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
8074 /* We have a wait response. All is well. */
8076 case PACKET_UNKNOWN
:
8079 if (remote_exec_file
[0] == '\0')
8080 error (_("Running the default executable on the remote target failed; "
8081 "try \"set remote exec-file\"?"));
8083 error (_("Running \"%s\" on the remote target failed"),
8086 gdb_assert_not_reached (_("bad switch"));
8090 /* In the extended protocol we want to be able to do things like
8091 "run" and have them basically work as expected. So we need
8092 a special create_inferior function. We support changing the
8093 executable file and the command line arguments, but not the
8097 extended_remote_create_inferior (struct target_ops
*ops
,
8098 char *exec_file
, char *args
,
8099 char **env
, int from_tty
)
8103 struct remote_state
*rs
= get_remote_state ();
8105 /* If running asynchronously, register the target file descriptor
8106 with the event loop. */
8107 if (target_can_async_p ())
8108 target_async (inferior_event_handler
, 0);
8110 /* Disable address space randomization if requested (and supported). */
8111 if (extended_remote_supports_disable_randomization (ops
))
8112 extended_remote_disable_randomization (disable_randomization
);
8114 /* Now restart the remote server. */
8115 run_worked
= extended_remote_run (args
) != -1;
8118 /* vRun was not supported. Fail if we need it to do what the
8120 if (remote_exec_file
[0])
8121 error (_("Remote target does not support \"set remote exec-file\""));
8123 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8125 /* Fall back to "R". */
8126 extended_remote_restart ();
8129 if (!have_inferiors ())
8131 /* Clean up from the last time we ran, before we mark the target
8132 running again. This will mark breakpoints uninserted, and
8133 get_offsets may insert breakpoints. */
8134 init_thread_list ();
8135 init_wait_for_inferior ();
8138 /* vRun's success return is a stop reply. */
8139 stop_reply
= run_worked
? rs
->buf
: NULL
;
8140 add_current_inferior_and_thread (stop_reply
);
8142 /* Get updated offsets, if the stub uses qOffsets. */
8147 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8148 the list of conditions (in agent expression bytecode format), if any, the
8149 target needs to evaluate. The output is placed into the packet buffer
8150 started from BUF and ended at BUF_END. */
8153 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8154 struct bp_target_info
*bp_tgt
, char *buf
,
8157 struct agent_expr
*aexpr
= NULL
;
8160 char *buf_start
= buf
;
8162 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8165 buf
+= strlen (buf
);
8166 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8169 /* Send conditions to the target and free the vector. */
8171 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8174 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8175 buf
+= strlen (buf
);
8176 for (i
= 0; i
< aexpr
->len
; ++i
)
8177 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8184 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8185 struct bp_target_info
*bp_tgt
, char *buf
)
8187 struct agent_expr
*aexpr
= NULL
;
8190 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8193 buf
+= strlen (buf
);
8195 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8196 buf
+= strlen (buf
);
8198 /* Concatenate all the agent expressions that are commands into the
8201 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8204 sprintf (buf
, "X%x,", aexpr
->len
);
8205 buf
+= strlen (buf
);
8206 for (i
= 0; i
< aexpr
->len
; ++i
)
8207 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8212 /* Insert a breakpoint. On targets that have software breakpoint
8213 support, we ask the remote target to do the work; on targets
8214 which don't, we insert a traditional memory breakpoint. */
8217 remote_insert_breakpoint (struct target_ops
*ops
,
8218 struct gdbarch
*gdbarch
,
8219 struct bp_target_info
*bp_tgt
)
8221 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8222 If it succeeds, then set the support to PACKET_ENABLE. If it
8223 fails, and the user has explicitly requested the Z support then
8224 report an error, otherwise, mark it disabled and go on. */
8226 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8228 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
8229 struct remote_state
*rs
;
8232 struct condition_list
*cond
= NULL
;
8234 /* Make sure the remote is pointing at the right process, if
8236 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8237 set_general_process ();
8239 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8241 rs
= get_remote_state ();
8243 endbuf
= rs
->buf
+ get_remote_packet_size ();
8248 addr
= (ULONGEST
) remote_address_masked (addr
);
8249 p
+= hexnumstr (p
, addr
);
8250 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8252 if (remote_supports_cond_breakpoints (ops
))
8253 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8255 if (remote_can_run_breakpoint_commands (ops
))
8256 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8259 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8261 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8266 bp_tgt
->placed_address
= addr
;
8267 bp_tgt
->placed_size
= bpsize
;
8269 case PACKET_UNKNOWN
:
8274 /* If this breakpoint has target-side commands but this stub doesn't
8275 support Z0 packets, throw error. */
8276 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8277 throw_error (NOT_SUPPORTED_ERROR
, _("\
8278 Target doesn't support breakpoints that have target side commands."));
8280 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8284 remote_remove_breakpoint (struct target_ops
*ops
,
8285 struct gdbarch
*gdbarch
,
8286 struct bp_target_info
*bp_tgt
)
8288 CORE_ADDR addr
= bp_tgt
->placed_address
;
8289 struct remote_state
*rs
= get_remote_state ();
8291 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8294 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8296 /* Make sure the remote is pointing at the right process, if
8298 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8299 set_general_process ();
8305 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8306 p
+= hexnumstr (p
, addr
);
8307 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8310 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8312 return (rs
->buf
[0] == 'E');
8315 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8319 watchpoint_to_Z_packet (int type
)
8324 return Z_PACKET_WRITE_WP
;
8327 return Z_PACKET_READ_WP
;
8330 return Z_PACKET_ACCESS_WP
;
8333 internal_error (__FILE__
, __LINE__
,
8334 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8339 remote_insert_watchpoint (struct target_ops
*self
,
8340 CORE_ADDR addr
, int len
, int type
,
8341 struct expression
*cond
)
8343 struct remote_state
*rs
= get_remote_state ();
8344 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8346 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8348 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8351 /* Make sure the remote is pointing at the right process, if
8353 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8354 set_general_process ();
8356 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8357 p
= strchr (rs
->buf
, '\0');
8358 addr
= remote_address_masked (addr
);
8359 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8360 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8363 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8365 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8369 case PACKET_UNKNOWN
:
8374 internal_error (__FILE__
, __LINE__
,
8375 _("remote_insert_watchpoint: reached end of function"));
8379 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8380 CORE_ADDR start
, int length
)
8382 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8384 return diff
< length
;
8389 remote_remove_watchpoint (struct target_ops
*self
,
8390 CORE_ADDR addr
, int len
, int type
,
8391 struct expression
*cond
)
8393 struct remote_state
*rs
= get_remote_state ();
8394 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8396 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8398 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8401 /* Make sure the remote is pointing at the right process, if
8403 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8404 set_general_process ();
8406 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8407 p
= strchr (rs
->buf
, '\0');
8408 addr
= remote_address_masked (addr
);
8409 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8410 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8412 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8414 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8417 case PACKET_UNKNOWN
:
8422 internal_error (__FILE__
, __LINE__
,
8423 _("remote_remove_watchpoint: reached end of function"));
8427 int remote_hw_watchpoint_limit
= -1;
8428 int remote_hw_watchpoint_length_limit
= -1;
8429 int remote_hw_breakpoint_limit
= -1;
8432 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8433 CORE_ADDR addr
, int len
)
8435 if (remote_hw_watchpoint_length_limit
== 0)
8437 else if (remote_hw_watchpoint_length_limit
< 0)
8439 else if (len
<= remote_hw_watchpoint_length_limit
)
8446 remote_check_watch_resources (struct target_ops
*self
,
8447 int type
, int cnt
, int ot
)
8449 if (type
== bp_hardware_breakpoint
)
8451 if (remote_hw_breakpoint_limit
== 0)
8453 else if (remote_hw_breakpoint_limit
< 0)
8455 else if (cnt
<= remote_hw_breakpoint_limit
)
8460 if (remote_hw_watchpoint_limit
== 0)
8462 else if (remote_hw_watchpoint_limit
< 0)
8466 else if (cnt
<= remote_hw_watchpoint_limit
)
8472 /* The to_stopped_by_sw_breakpoint method of target remote. */
8475 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
8477 struct remote_state
*rs
= get_remote_state ();
8479 return rs
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
;
8482 /* The to_supports_stopped_by_sw_breakpoint method of target
8486 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
8488 struct remote_state
*rs
= get_remote_state ();
8490 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
8493 /* The to_stopped_by_hw_breakpoint method of target remote. */
8496 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
8498 struct remote_state
*rs
= get_remote_state ();
8500 return rs
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
;
8503 /* The to_supports_stopped_by_hw_breakpoint method of target
8507 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
8509 struct remote_state
*rs
= get_remote_state ();
8511 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
8515 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8517 struct remote_state
*rs
= get_remote_state ();
8519 return rs
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
;
8523 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8525 struct remote_state
*rs
= get_remote_state ();
8528 if (remote_stopped_by_watchpoint (target
))
8530 *addr_p
= rs
->remote_watch_data_address
;
8539 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8540 struct bp_target_info
*bp_tgt
)
8542 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
8543 struct remote_state
*rs
;
8548 /* The length field should be set to the size of a breakpoint
8549 instruction, even though we aren't inserting one ourselves. */
8551 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8553 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8556 /* Make sure the remote is pointing at the right process, if
8558 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8559 set_general_process ();
8561 rs
= get_remote_state ();
8563 endbuf
= rs
->buf
+ get_remote_packet_size ();
8569 addr
= remote_address_masked (addr
);
8570 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8571 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
8573 if (remote_supports_cond_breakpoints (self
))
8574 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8576 if (remote_can_run_breakpoint_commands (self
))
8577 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8580 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8582 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8585 if (rs
->buf
[1] == '.')
8587 message
= strchr (rs
->buf
+ 2, '.');
8589 error (_("Remote failure reply: %s"), message
+ 1);
8592 case PACKET_UNKNOWN
:
8595 bp_tgt
->placed_address
= addr
;
8596 bp_tgt
->placed_size
= bpsize
;
8599 internal_error (__FILE__
, __LINE__
,
8600 _("remote_insert_hw_breakpoint: reached end of function"));
8605 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8606 struct bp_target_info
*bp_tgt
)
8609 struct remote_state
*rs
= get_remote_state ();
8611 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8613 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8616 /* Make sure the remote is pointing at the right process, if
8618 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8619 set_general_process ();
8625 addr
= remote_address_masked (bp_tgt
->placed_address
);
8626 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8627 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8630 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8632 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8635 case PACKET_UNKNOWN
:
8640 internal_error (__FILE__
, __LINE__
,
8641 _("remote_remove_hw_breakpoint: reached end of function"));
8644 /* Verify memory using the "qCRC:" request. */
8647 remote_verify_memory (struct target_ops
*ops
,
8648 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8650 struct remote_state
*rs
= get_remote_state ();
8651 unsigned long host_crc
, target_crc
;
8654 /* It doesn't make sense to use qCRC if the remote target is
8655 connected but not running. */
8656 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
8658 enum packet_result result
;
8660 /* Make sure the remote is pointing at the right process. */
8661 set_general_process ();
8663 /* FIXME: assumes lma can fit into long. */
8664 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8665 (long) lma
, (long) size
);
8668 /* Be clever; compute the host_crc before waiting for target
8670 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8672 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8674 result
= packet_ok (rs
->buf
,
8675 &remote_protocol_packets
[PACKET_qCRC
]);
8676 if (result
== PACKET_ERROR
)
8678 else if (result
== PACKET_OK
)
8680 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8681 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8683 return (host_crc
== target_crc
);
8687 return simple_verify_memory (ops
, data
, lma
, size
);
8690 /* compare-sections command
8692 With no arguments, compares each loadable section in the exec bfd
8693 with the same memory range on the target, and reports mismatches.
8694 Useful for verifying the image on the target against the exec file. */
8697 compare_sections_command (char *args
, int from_tty
)
8700 struct cleanup
*old_chain
;
8702 const char *sectname
;
8711 error (_("command cannot be used without an exec file"));
8713 /* Make sure the remote is pointing at the right process. */
8714 set_general_process ();
8716 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
8722 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8724 if (!(s
->flags
& SEC_LOAD
))
8725 continue; /* Skip non-loadable section. */
8727 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
8728 continue; /* Skip writeable sections */
8730 size
= bfd_get_section_size (s
);
8732 continue; /* Skip zero-length section. */
8734 sectname
= bfd_get_section_name (exec_bfd
, s
);
8735 if (args
&& strcmp (args
, sectname
) != 0)
8736 continue; /* Not the section selected by user. */
8738 matched
= 1; /* Do this section. */
8741 sectdata
= xmalloc (size
);
8742 old_chain
= make_cleanup (xfree
, sectdata
);
8743 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8745 res
= target_verify_memory (sectdata
, lma
, size
);
8748 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8749 paddress (target_gdbarch (), lma
),
8750 paddress (target_gdbarch (), lma
+ size
));
8752 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8753 paddress (target_gdbarch (), lma
),
8754 paddress (target_gdbarch (), lma
+ size
));
8756 printf_filtered ("matched.\n");
8759 printf_filtered ("MIS-MATCHED!\n");
8763 do_cleanups (old_chain
);
8766 warning (_("One or more sections of the target image does not match\n\
8767 the loaded file\n"));
8768 if (args
&& !matched
)
8769 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8772 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8773 into remote target. The number of bytes written to the remote
8774 target is returned, or -1 for error. */
8776 static enum target_xfer_status
8777 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8778 const char *annex
, const gdb_byte
*writebuf
,
8779 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8780 struct packet_config
*packet
)
8784 struct remote_state
*rs
= get_remote_state ();
8785 int max_size
= get_memory_write_packet_size ();
8787 if (packet
->support
== PACKET_DISABLE
)
8788 return TARGET_XFER_E_IO
;
8790 /* Insert header. */
8791 i
= snprintf (rs
->buf
, max_size
,
8792 "qXfer:%s:write:%s:%s:",
8793 object_name
, annex
? annex
: "",
8794 phex_nz (offset
, sizeof offset
));
8795 max_size
-= (i
+ 1);
8797 /* Escape as much data as fits into rs->buf. */
8798 buf_len
= remote_escape_output
8799 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8801 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8802 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8803 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8804 return TARGET_XFER_E_IO
;
8806 unpack_varlen_hex (rs
->buf
, &n
);
8809 return TARGET_XFER_OK
;
8812 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8813 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8814 number of bytes read is returned, or 0 for EOF, or -1 for error.
8815 The number of bytes read may be less than LEN without indicating an
8816 EOF. PACKET is checked and updated to indicate whether the remote
8817 target supports this object. */
8819 static enum target_xfer_status
8820 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8822 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8823 ULONGEST
*xfered_len
,
8824 struct packet_config
*packet
)
8826 struct remote_state
*rs
= get_remote_state ();
8827 LONGEST i
, n
, packet_len
;
8829 if (packet
->support
== PACKET_DISABLE
)
8830 return TARGET_XFER_E_IO
;
8832 /* Check whether we've cached an end-of-object packet that matches
8834 if (rs
->finished_object
)
8836 if (strcmp (object_name
, rs
->finished_object
) == 0
8837 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8838 && offset
== rs
->finished_offset
)
8839 return TARGET_XFER_EOF
;
8842 /* Otherwise, we're now reading something different. Discard
8844 xfree (rs
->finished_object
);
8845 xfree (rs
->finished_annex
);
8846 rs
->finished_object
= NULL
;
8847 rs
->finished_annex
= NULL
;
8850 /* Request only enough to fit in a single packet. The actual data
8851 may not, since we don't know how much of it will need to be escaped;
8852 the target is free to respond with slightly less data. We subtract
8853 five to account for the response type and the protocol frame. */
8854 n
= min (get_remote_packet_size () - 5, len
);
8855 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8856 object_name
, annex
? annex
: "",
8857 phex_nz (offset
, sizeof offset
),
8858 phex_nz (n
, sizeof n
));
8859 i
= putpkt (rs
->buf
);
8861 return TARGET_XFER_E_IO
;
8864 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8865 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8866 return TARGET_XFER_E_IO
;
8868 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8869 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8871 /* 'm' means there is (or at least might be) more data after this
8872 batch. That does not make sense unless there's at least one byte
8873 of data in this reply. */
8874 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8875 error (_("Remote qXfer reply contained no data."));
8877 /* Got some data. */
8878 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8879 packet_len
- 1, readbuf
, n
);
8881 /* 'l' is an EOF marker, possibly including a final block of data,
8882 or possibly empty. If we have the final block of a non-empty
8883 object, record this fact to bypass a subsequent partial read. */
8884 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8886 rs
->finished_object
= xstrdup (object_name
);
8887 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8888 rs
->finished_offset
= offset
+ i
;
8892 return TARGET_XFER_EOF
;
8896 return TARGET_XFER_OK
;
8900 static enum target_xfer_status
8901 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8902 const char *annex
, gdb_byte
*readbuf
,
8903 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8904 ULONGEST
*xfered_len
)
8906 struct remote_state
*rs
;
8911 set_remote_traceframe ();
8912 set_general_thread (inferior_ptid
);
8914 rs
= get_remote_state ();
8916 /* Handle memory using the standard memory routines. */
8917 if (object
== TARGET_OBJECT_MEMORY
)
8919 /* If the remote target is connected but not running, we should
8920 pass this request down to a lower stratum (e.g. the executable
8922 if (!target_has_execution
)
8923 return TARGET_XFER_EOF
;
8925 if (writebuf
!= NULL
)
8926 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8928 return remote_read_bytes (ops
, offset
, readbuf
, len
, xfered_len
);
8931 /* Handle SPU memory using qxfer packets. */
8932 if (object
== TARGET_OBJECT_SPU
)
8935 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8936 xfered_len
, &remote_protocol_packets
8937 [PACKET_qXfer_spu_read
]);
8939 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8940 xfered_len
, &remote_protocol_packets
8941 [PACKET_qXfer_spu_write
]);
8944 /* Handle extra signal info using qxfer packets. */
8945 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8948 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8949 xfered_len
, &remote_protocol_packets
8950 [PACKET_qXfer_siginfo_read
]);
8952 return remote_write_qxfer (ops
, "siginfo", annex
,
8953 writebuf
, offset
, len
, xfered_len
,
8954 &remote_protocol_packets
8955 [PACKET_qXfer_siginfo_write
]);
8958 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8961 return remote_read_qxfer (ops
, "statictrace", annex
,
8962 readbuf
, offset
, len
, xfered_len
,
8963 &remote_protocol_packets
8964 [PACKET_qXfer_statictrace_read
]);
8966 return TARGET_XFER_E_IO
;
8969 /* Only handle flash writes. */
8970 if (writebuf
!= NULL
)
8976 case TARGET_OBJECT_FLASH
:
8977 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8981 return TARGET_XFER_E_IO
;
8985 /* Map pre-existing objects onto letters. DO NOT do this for new
8986 objects!!! Instead specify new query packets. */
8989 case TARGET_OBJECT_AVR
:
8993 case TARGET_OBJECT_AUXV
:
8994 gdb_assert (annex
== NULL
);
8995 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8997 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8999 case TARGET_OBJECT_AVAILABLE_FEATURES
:
9000 return remote_read_qxfer
9001 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
9002 &remote_protocol_packets
[PACKET_qXfer_features
]);
9004 case TARGET_OBJECT_LIBRARIES
:
9005 return remote_read_qxfer
9006 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
9007 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
9009 case TARGET_OBJECT_LIBRARIES_SVR4
:
9010 return remote_read_qxfer
9011 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
9012 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
9014 case TARGET_OBJECT_MEMORY_MAP
:
9015 gdb_assert (annex
== NULL
);
9016 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
9018 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
9020 case TARGET_OBJECT_OSDATA
:
9021 /* Should only get here if we're connected. */
9022 gdb_assert (rs
->remote_desc
);
9023 return remote_read_qxfer
9024 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
9025 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
9027 case TARGET_OBJECT_THREADS
:
9028 gdb_assert (annex
== NULL
);
9029 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
9031 &remote_protocol_packets
[PACKET_qXfer_threads
]);
9033 case TARGET_OBJECT_TRACEFRAME_INFO
:
9034 gdb_assert (annex
== NULL
);
9035 return remote_read_qxfer
9036 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
9037 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
9039 case TARGET_OBJECT_FDPIC
:
9040 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
9042 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
9044 case TARGET_OBJECT_OPENVMS_UIB
:
9045 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
9047 &remote_protocol_packets
[PACKET_qXfer_uib
]);
9049 case TARGET_OBJECT_BTRACE
:
9050 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
9052 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
9054 case TARGET_OBJECT_BTRACE_CONF
:
9055 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
9057 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
9060 return TARGET_XFER_E_IO
;
9063 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
9064 large enough let the caller deal with it. */
9065 if (len
< get_remote_packet_size ())
9066 return TARGET_XFER_E_IO
;
9067 len
= get_remote_packet_size ();
9069 /* Except for querying the minimum buffer size, target must be open. */
9070 if (!rs
->remote_desc
)
9071 error (_("remote query is only available after target open"));
9073 gdb_assert (annex
!= NULL
);
9074 gdb_assert (readbuf
!= NULL
);
9080 /* We used one buffer char for the remote protocol q command and
9081 another for the query type. As the remote protocol encapsulation
9082 uses 4 chars plus one extra in case we are debugging
9083 (remote_debug), we have PBUFZIZ - 7 left to pack the query
9086 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
9088 /* Bad caller may have sent forbidden characters. */
9089 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
9094 gdb_assert (annex
[i
] == '\0');
9096 i
= putpkt (rs
->buf
);
9098 return TARGET_XFER_E_IO
;
9100 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9101 strcpy ((char *) readbuf
, rs
->buf
);
9103 *xfered_len
= strlen ((char *) readbuf
);
9104 return TARGET_XFER_OK
;
9108 remote_search_memory (struct target_ops
* ops
,
9109 CORE_ADDR start_addr
, ULONGEST search_space_len
,
9110 const gdb_byte
*pattern
, ULONGEST pattern_len
,
9111 CORE_ADDR
*found_addrp
)
9113 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
9114 struct remote_state
*rs
= get_remote_state ();
9115 int max_size
= get_memory_write_packet_size ();
9116 struct packet_config
*packet
=
9117 &remote_protocol_packets
[PACKET_qSearch_memory
];
9118 /* Number of packet bytes used to encode the pattern;
9119 this could be more than PATTERN_LEN due to escape characters. */
9120 int escaped_pattern_len
;
9121 /* Amount of pattern that was encodable in the packet. */
9122 int used_pattern_len
;
9125 ULONGEST found_addr
;
9127 /* Don't go to the target if we don't have to.
9128 This is done before checking packet->support to avoid the possibility that
9129 a success for this edge case means the facility works in general. */
9130 if (pattern_len
> search_space_len
)
9132 if (pattern_len
== 0)
9134 *found_addrp
= start_addr
;
9138 /* If we already know the packet isn't supported, fall back to the simple
9139 way of searching memory. */
9141 if (packet_config_support (packet
) == PACKET_DISABLE
)
9143 /* Target doesn't provided special support, fall back and use the
9144 standard support (copy memory and do the search here). */
9145 return simple_search_memory (ops
, start_addr
, search_space_len
,
9146 pattern
, pattern_len
, found_addrp
);
9149 /* Make sure the remote is pointing at the right process. */
9150 set_general_process ();
9152 /* Insert header. */
9153 i
= snprintf (rs
->buf
, max_size
,
9154 "qSearch:memory:%s;%s;",
9155 phex_nz (start_addr
, addr_size
),
9156 phex_nz (search_space_len
, sizeof (search_space_len
)));
9157 max_size
-= (i
+ 1);
9159 /* Escape as much data as fits into rs->buf. */
9160 escaped_pattern_len
=
9161 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9162 &used_pattern_len
, max_size
);
9164 /* Bail if the pattern is too large. */
9165 if (used_pattern_len
!= pattern_len
)
9166 error (_("Pattern is too large to transmit to remote target."));
9168 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9169 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9170 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9172 /* The request may not have worked because the command is not
9173 supported. If so, fall back to the simple way. */
9174 if (packet
->support
== PACKET_DISABLE
)
9176 return simple_search_memory (ops
, start_addr
, search_space_len
,
9177 pattern
, pattern_len
, found_addrp
);
9182 if (rs
->buf
[0] == '0')
9184 else if (rs
->buf
[0] == '1')
9187 if (rs
->buf
[1] != ',')
9188 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9189 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9190 *found_addrp
= found_addr
;
9193 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9199 remote_rcmd (struct target_ops
*self
, const char *command
,
9200 struct ui_file
*outbuf
)
9202 struct remote_state
*rs
= get_remote_state ();
9205 if (!rs
->remote_desc
)
9206 error (_("remote rcmd is only available after target open"));
9208 /* Send a NULL command across as an empty command. */
9209 if (command
== NULL
)
9212 /* The query prefix. */
9213 strcpy (rs
->buf
, "qRcmd,");
9214 p
= strchr (rs
->buf
, '\0');
9216 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9217 > get_remote_packet_size ())
9218 error (_("\"monitor\" command ``%s'' is too long."), command
);
9220 /* Encode the actual command. */
9221 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
9223 if (putpkt (rs
->buf
) < 0)
9224 error (_("Communication problem with target."));
9226 /* get/display the response */
9231 /* XXX - see also remote_get_noisy_reply(). */
9232 QUIT
; /* Allow user to bail out with ^C. */
9234 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9236 /* Timeout. Continue to (try to) read responses.
9237 This is better than stopping with an error, assuming the stub
9238 is still executing the (long) monitor command.
9239 If needed, the user can interrupt gdb using C-c, obtaining
9240 an effect similar to stop on timeout. */
9245 error (_("Target does not support this command."));
9246 if (buf
[0] == 'O' && buf
[1] != 'K')
9248 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9251 if (strcmp (buf
, "OK") == 0)
9253 if (strlen (buf
) == 3 && buf
[0] == 'E'
9254 && isdigit (buf
[1]) && isdigit (buf
[2]))
9256 error (_("Protocol error with Rcmd"));
9258 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9260 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9262 fputc_unfiltered (c
, outbuf
);
9268 static VEC(mem_region_s
) *
9269 remote_memory_map (struct target_ops
*ops
)
9271 VEC(mem_region_s
) *result
= NULL
;
9272 char *text
= target_read_stralloc (¤t_target
,
9273 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9277 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9279 result
= parse_memory_map (text
);
9280 do_cleanups (back_to
);
9287 packet_command (char *args
, int from_tty
)
9289 struct remote_state
*rs
= get_remote_state ();
9291 if (!rs
->remote_desc
)
9292 error (_("command can only be used with remote target"));
9295 error (_("remote-packet command requires packet text as argument"));
9297 puts_filtered ("sending: ");
9298 print_packet (args
);
9299 puts_filtered ("\n");
9302 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9303 puts_filtered ("received: ");
9304 print_packet (rs
->buf
);
9305 puts_filtered ("\n");
9309 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9311 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9313 static void threadset_test_cmd (char *cmd
, int tty
);
9315 static void threadalive_test (char *cmd
, int tty
);
9317 static void threadlist_test_cmd (char *cmd
, int tty
);
9319 int get_and_display_threadinfo (threadref
*ref
);
9321 static void threadinfo_test_cmd (char *cmd
, int tty
);
9323 static int thread_display_step (threadref
*ref
, void *context
);
9325 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9327 static void init_remote_threadtests (void);
9329 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9332 threadset_test_cmd (char *cmd
, int tty
)
9334 int sample_thread
= SAMPLE_THREAD
;
9336 printf_filtered (_("Remote threadset test\n"));
9337 set_general_thread (sample_thread
);
9342 threadalive_test (char *cmd
, int tty
)
9344 int sample_thread
= SAMPLE_THREAD
;
9345 int pid
= ptid_get_pid (inferior_ptid
);
9346 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
9348 if (remote_thread_alive (ptid
))
9349 printf_filtered ("PASS: Thread alive test\n");
9351 printf_filtered ("FAIL: Thread alive test\n");
9354 void output_threadid (char *title
, threadref
*ref
);
9357 output_threadid (char *title
, threadref
*ref
)
9361 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9363 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9367 threadlist_test_cmd (char *cmd
, int tty
)
9370 threadref nextthread
;
9371 int done
, result_count
;
9372 threadref threadlist
[3];
9374 printf_filtered ("Remote Threadlist test\n");
9375 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9376 &result_count
, &threadlist
[0]))
9377 printf_filtered ("FAIL: threadlist test\n");
9380 threadref
*scan
= threadlist
;
9381 threadref
*limit
= scan
+ result_count
;
9383 while (scan
< limit
)
9384 output_threadid (" thread ", scan
++);
9389 display_thread_info (struct gdb_ext_thread_info
*info
)
9391 output_threadid ("Threadid: ", &info
->threadid
);
9392 printf_filtered ("Name: %s\n ", info
->shortname
);
9393 printf_filtered ("State: %s\n", info
->display
);
9394 printf_filtered ("other: %s\n\n", info
->more_display
);
9398 get_and_display_threadinfo (threadref
*ref
)
9402 struct gdb_ext_thread_info threadinfo
;
9404 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9405 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9406 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9407 display_thread_info (&threadinfo
);
9412 threadinfo_test_cmd (char *cmd
, int tty
)
9414 int athread
= SAMPLE_THREAD
;
9418 int_to_threadref (&thread
, athread
);
9419 printf_filtered ("Remote Threadinfo test\n");
9420 if (!get_and_display_threadinfo (&thread
))
9421 printf_filtered ("FAIL cannot get thread info\n");
9425 thread_display_step (threadref
*ref
, void *context
)
9427 /* output_threadid(" threadstep ",ref); *//* simple test */
9428 return get_and_display_threadinfo (ref
);
9432 threadlist_update_test_cmd (char *cmd
, int tty
)
9434 printf_filtered ("Remote Threadlist update test\n");
9435 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9439 init_remote_threadtests (void)
9441 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9442 _("Fetch and print the remote list of "
9443 "thread identifiers, one pkt only"));
9444 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9445 _("Fetch and display info about one thread"));
9446 add_com ("tset", class_obscure
, threadset_test_cmd
,
9447 _("Test setting to a different thread"));
9448 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9449 _("Iterate through updating all remote thread info"));
9450 add_com ("talive", class_obscure
, threadalive_test
,
9451 _(" Remote thread alive test "));
9456 /* Convert a thread ID to a string. Returns the string in a static
9460 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9462 static char buf
[64];
9463 struct remote_state
*rs
= get_remote_state ();
9465 if (ptid_equal (ptid
, null_ptid
))
9466 return normal_pid_to_str (ptid
);
9467 else if (ptid_is_pid (ptid
))
9469 /* Printing an inferior target id. */
9471 /* When multi-process extensions are off, there's no way in the
9472 remote protocol to know the remote process id, if there's any
9473 at all. There's one exception --- when we're connected with
9474 target extended-remote, and we manually attached to a process
9475 with "attach PID". We don't record anywhere a flag that
9476 allows us to distinguish that case from the case of
9477 connecting with extended-remote and the stub already being
9478 attached to a process, and reporting yes to qAttached, hence
9479 no smart special casing here. */
9480 if (!remote_multi_process_p (rs
))
9482 xsnprintf (buf
, sizeof buf
, "Remote target");
9486 return normal_pid_to_str (ptid
);
9490 if (ptid_equal (magic_null_ptid
, ptid
))
9491 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9492 else if (rs
->extended
&& remote_multi_process_p (rs
))
9493 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9494 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
9496 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9497 ptid_get_lwp (ptid
));
9502 /* Get the address of the thread local variable in OBJFILE which is
9503 stored at OFFSET within the thread local storage for thread PTID. */
9506 remote_get_thread_local_address (struct target_ops
*ops
,
9507 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9509 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
9511 struct remote_state
*rs
= get_remote_state ();
9513 char *endp
= rs
->buf
+ get_remote_packet_size ();
9514 enum packet_result result
;
9516 strcpy (p
, "qGetTLSAddr:");
9518 p
= write_ptid (p
, endp
, ptid
);
9520 p
+= hexnumstr (p
, offset
);
9522 p
+= hexnumstr (p
, lm
);
9526 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9527 result
= packet_ok (rs
->buf
,
9528 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9529 if (result
== PACKET_OK
)
9533 unpack_varlen_hex (rs
->buf
, &result
);
9536 else if (result
== PACKET_UNKNOWN
)
9537 throw_error (TLS_GENERIC_ERROR
,
9538 _("Remote target doesn't support qGetTLSAddr packet"));
9540 throw_error (TLS_GENERIC_ERROR
,
9541 _("Remote target failed to process qGetTLSAddr request"));
9544 throw_error (TLS_GENERIC_ERROR
,
9545 _("TLS not supported or disabled on this target"));
9550 /* Provide thread local base, i.e. Thread Information Block address.
9551 Returns 1 if ptid is found and thread_local_base is non zero. */
9554 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
9556 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
9558 struct remote_state
*rs
= get_remote_state ();
9560 char *endp
= rs
->buf
+ get_remote_packet_size ();
9561 enum packet_result result
;
9563 strcpy (p
, "qGetTIBAddr:");
9565 p
= write_ptid (p
, endp
, ptid
);
9569 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9570 result
= packet_ok (rs
->buf
,
9571 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9572 if (result
== PACKET_OK
)
9576 unpack_varlen_hex (rs
->buf
, &result
);
9578 *addr
= (CORE_ADDR
) result
;
9581 else if (result
== PACKET_UNKNOWN
)
9582 error (_("Remote target doesn't support qGetTIBAddr packet"));
9584 error (_("Remote target failed to process qGetTIBAddr request"));
9587 error (_("qGetTIBAddr not supported or disabled on this target"));
9592 /* Support for inferring a target description based on the current
9593 architecture and the size of a 'g' packet. While the 'g' packet
9594 can have any size (since optional registers can be left off the
9595 end), some sizes are easily recognizable given knowledge of the
9596 approximate architecture. */
9598 struct remote_g_packet_guess
9601 const struct target_desc
*tdesc
;
9603 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9604 DEF_VEC_O(remote_g_packet_guess_s
);
9606 struct remote_g_packet_data
9608 VEC(remote_g_packet_guess_s
) *guesses
;
9611 static struct gdbarch_data
*remote_g_packet_data_handle
;
9614 remote_g_packet_data_init (struct obstack
*obstack
)
9616 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9620 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9621 const struct target_desc
*tdesc
)
9623 struct remote_g_packet_data
*data
9624 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9625 struct remote_g_packet_guess new_guess
, *guess
;
9628 gdb_assert (tdesc
!= NULL
);
9631 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9633 if (guess
->bytes
== bytes
)
9634 internal_error (__FILE__
, __LINE__
,
9635 _("Duplicate g packet description added for size %d"),
9638 new_guess
.bytes
= bytes
;
9639 new_guess
.tdesc
= tdesc
;
9640 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9643 /* Return 1 if remote_read_description would do anything on this target
9644 and architecture, 0 otherwise. */
9647 remote_read_description_p (struct target_ops
*target
)
9649 struct remote_g_packet_data
*data
9650 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9652 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9658 static const struct target_desc
*
9659 remote_read_description (struct target_ops
*target
)
9661 struct remote_g_packet_data
*data
9662 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9664 /* Do not try this during initial connection, when we do not know
9665 whether there is a running but stopped thread. */
9666 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9667 return target
->beneath
->to_read_description (target
->beneath
);
9669 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9671 struct remote_g_packet_guess
*guess
;
9673 int bytes
= send_g_packet ();
9676 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9678 if (guess
->bytes
== bytes
)
9679 return guess
->tdesc
;
9681 /* We discard the g packet. A minor optimization would be to
9682 hold on to it, and fill the register cache once we have selected
9683 an architecture, but it's too tricky to do safely. */
9686 return target
->beneath
->to_read_description (target
->beneath
);
9689 /* Remote file transfer support. This is host-initiated I/O, not
9690 target-initiated; for target-initiated, see remote-fileio.c. */
9692 /* If *LEFT is at least the length of STRING, copy STRING to
9693 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9694 decrease *LEFT. Otherwise raise an error. */
9697 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9699 int len
= strlen (string
);
9702 error (_("Packet too long for target."));
9704 memcpy (*buffer
, string
, len
);
9708 /* NUL-terminate the buffer as a convenience, if there is
9714 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9715 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9716 decrease *LEFT. Otherwise raise an error. */
9719 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9722 if (2 * len
> *left
)
9723 error (_("Packet too long for target."));
9725 bin2hex (bytes
, *buffer
, len
);
9729 /* NUL-terminate the buffer as a convenience, if there is
9735 /* If *LEFT is large enough, convert VALUE to hex and add it to
9736 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9737 decrease *LEFT. Otherwise raise an error. */
9740 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9742 int len
= hexnumlen (value
);
9745 error (_("Packet too long for target."));
9747 hexnumstr (*buffer
, value
);
9751 /* NUL-terminate the buffer as a convenience, if there is
9757 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9758 value, *REMOTE_ERRNO to the remote error number or zero if none
9759 was included, and *ATTACHMENT to point to the start of the annex
9760 if any. The length of the packet isn't needed here; there may
9761 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9763 Return 0 if the packet could be parsed, -1 if it could not. If
9764 -1 is returned, the other variables may not be initialized. */
9767 remote_hostio_parse_result (char *buffer
, int *retcode
,
9768 int *remote_errno
, char **attachment
)
9775 if (buffer
[0] != 'F')
9779 *retcode
= strtol (&buffer
[1], &p
, 16);
9780 if (errno
!= 0 || p
== &buffer
[1])
9783 /* Check for ",errno". */
9787 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9788 if (errno
!= 0 || p
+ 1 == p2
)
9793 /* Check for ";attachment". If there is no attachment, the
9794 packet should end here. */
9797 *attachment
= p
+ 1;
9800 else if (*p
== '\0')
9806 /* Send a prepared I/O packet to the target and read its response.
9807 The prepared packet is in the global RS->BUF before this function
9808 is called, and the answer is there when we return.
9810 COMMAND_BYTES is the length of the request to send, which may include
9811 binary data. WHICH_PACKET is the packet configuration to check
9812 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9813 is set to the error number and -1 is returned. Otherwise the value
9814 returned by the function is returned.
9816 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9817 attachment is expected; an error will be reported if there's a
9818 mismatch. If one is found, *ATTACHMENT will be set to point into
9819 the packet buffer and *ATTACHMENT_LEN will be set to the
9820 attachment's length. */
9823 remote_hostio_send_command (int command_bytes
, int which_packet
,
9824 int *remote_errno
, char **attachment
,
9825 int *attachment_len
)
9827 struct remote_state
*rs
= get_remote_state ();
9828 int ret
, bytes_read
;
9829 char *attachment_tmp
;
9831 if (!rs
->remote_desc
9832 || packet_support (which_packet
) == PACKET_DISABLE
)
9834 *remote_errno
= FILEIO_ENOSYS
;
9838 putpkt_binary (rs
->buf
, command_bytes
);
9839 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9841 /* If it timed out, something is wrong. Don't try to parse the
9845 *remote_errno
= FILEIO_EINVAL
;
9849 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9852 *remote_errno
= FILEIO_EINVAL
;
9854 case PACKET_UNKNOWN
:
9855 *remote_errno
= FILEIO_ENOSYS
;
9861 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9864 *remote_errno
= FILEIO_EINVAL
;
9868 /* Make sure we saw an attachment if and only if we expected one. */
9869 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9870 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9872 *remote_errno
= FILEIO_EINVAL
;
9876 /* If an attachment was found, it must point into the packet buffer;
9877 work out how many bytes there were. */
9878 if (attachment_tmp
!= NULL
)
9880 *attachment
= attachment_tmp
;
9881 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9887 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9888 remote file descriptor, or -1 if an error occurs (and set
9892 remote_hostio_open (struct target_ops
*self
,
9893 const char *filename
, int flags
, int mode
,
9896 struct remote_state
*rs
= get_remote_state ();
9898 int left
= get_remote_packet_size () - 1;
9900 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9902 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9904 remote_buffer_add_string (&p
, &left
, ",");
9906 remote_buffer_add_int (&p
, &left
, flags
);
9907 remote_buffer_add_string (&p
, &left
, ",");
9909 remote_buffer_add_int (&p
, &left
, mode
);
9911 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9912 remote_errno
, NULL
, NULL
);
9915 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9916 Return the number of bytes written, or -1 if an error occurs (and
9917 set *REMOTE_ERRNO). */
9920 remote_hostio_pwrite (struct target_ops
*self
,
9921 int fd
, const gdb_byte
*write_buf
, int len
,
9922 ULONGEST offset
, int *remote_errno
)
9924 struct remote_state
*rs
= get_remote_state ();
9926 int left
= get_remote_packet_size ();
9929 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9931 remote_buffer_add_int (&p
, &left
, fd
);
9932 remote_buffer_add_string (&p
, &left
, ",");
9934 remote_buffer_add_int (&p
, &left
, offset
);
9935 remote_buffer_add_string (&p
, &left
, ",");
9937 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9938 get_remote_packet_size () - (p
- rs
->buf
));
9940 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9941 remote_errno
, NULL
, NULL
);
9944 /* Read up to LEN bytes FD on the remote target into READ_BUF
9945 Return the number of bytes read, or -1 if an error occurs (and
9946 set *REMOTE_ERRNO). */
9949 remote_hostio_pread (struct target_ops
*self
,
9950 int fd
, gdb_byte
*read_buf
, int len
,
9951 ULONGEST offset
, int *remote_errno
)
9953 struct remote_state
*rs
= get_remote_state ();
9956 int left
= get_remote_packet_size ();
9957 int ret
, attachment_len
;
9960 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9962 remote_buffer_add_int (&p
, &left
, fd
);
9963 remote_buffer_add_string (&p
, &left
, ",");
9965 remote_buffer_add_int (&p
, &left
, len
);
9966 remote_buffer_add_string (&p
, &left
, ",");
9968 remote_buffer_add_int (&p
, &left
, offset
);
9970 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9971 remote_errno
, &attachment
,
9977 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9979 if (read_len
!= ret
)
9980 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9985 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9986 (and set *REMOTE_ERRNO). */
9989 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9991 struct remote_state
*rs
= get_remote_state ();
9993 int left
= get_remote_packet_size () - 1;
9995 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9997 remote_buffer_add_int (&p
, &left
, fd
);
9999 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
10000 remote_errno
, NULL
, NULL
);
10003 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
10004 occurs (and set *REMOTE_ERRNO). */
10007 remote_hostio_unlink (struct target_ops
*self
,
10008 const char *filename
, int *remote_errno
)
10010 struct remote_state
*rs
= get_remote_state ();
10012 int left
= get_remote_packet_size () - 1;
10014 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
10016 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
10017 strlen (filename
));
10019 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
10020 remote_errno
, NULL
, NULL
);
10023 /* Read value of symbolic link FILENAME on the remote target. Return
10024 a null-terminated string allocated via xmalloc, or NULL if an error
10025 occurs (and set *REMOTE_ERRNO). */
10028 remote_hostio_readlink (struct target_ops
*self
,
10029 const char *filename
, int *remote_errno
)
10031 struct remote_state
*rs
= get_remote_state ();
10034 int left
= get_remote_packet_size ();
10035 int len
, attachment_len
;
10039 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
10041 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
10042 strlen (filename
));
10044 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
10045 remote_errno
, &attachment
,
10051 ret
= xmalloc (len
+ 1);
10053 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
10054 (gdb_byte
*) ret
, len
);
10055 if (read_len
!= len
)
10056 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
10063 remote_fileio_errno_to_host (int errnum
)
10069 case FILEIO_ENOENT
:
10077 case FILEIO_EACCES
:
10079 case FILEIO_EFAULT
:
10083 case FILEIO_EEXIST
:
10085 case FILEIO_ENODEV
:
10087 case FILEIO_ENOTDIR
:
10089 case FILEIO_EISDIR
:
10091 case FILEIO_EINVAL
:
10093 case FILEIO_ENFILE
:
10095 case FILEIO_EMFILE
:
10099 case FILEIO_ENOSPC
:
10101 case FILEIO_ESPIPE
:
10105 case FILEIO_ENOSYS
:
10107 case FILEIO_ENAMETOOLONG
:
10108 return ENAMETOOLONG
;
10114 remote_hostio_error (int errnum
)
10116 int host_error
= remote_fileio_errno_to_host (errnum
);
10118 if (host_error
== -1)
10119 error (_("Unknown remote I/O error %d"), errnum
);
10121 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10125 remote_hostio_close_cleanup (void *opaque
)
10127 int fd
= *(int *) opaque
;
10130 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
10135 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10137 const char *filename
= bfd_get_filename (abfd
);
10138 int fd
, remote_errno
;
10141 gdb_assert (remote_filename_p (filename
));
10143 fd
= remote_hostio_open (find_target_at (process_stratum
),
10144 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10147 errno
= remote_fileio_errno_to_host (remote_errno
);
10148 bfd_set_error (bfd_error_system_call
);
10152 stream
= xmalloc (sizeof (int));
10158 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10160 int fd
= *(int *)stream
;
10165 /* Ignore errors on close; these may happen if the remote
10166 connection was already torn down. */
10167 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
10169 /* Zero means success. */
10174 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10175 file_ptr nbytes
, file_ptr offset
)
10177 int fd
= *(int *)stream
;
10179 file_ptr pos
, bytes
;
10182 while (nbytes
> pos
)
10184 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10185 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10186 offset
+ pos
, &remote_errno
);
10188 /* Success, but no bytes, means end-of-file. */
10192 errno
= remote_fileio_errno_to_host (remote_errno
);
10193 bfd_set_error (bfd_error_system_call
);
10204 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10206 /* FIXME: We should probably implement remote_hostio_stat. */
10207 sb
->st_size
= INT_MAX
;
10212 remote_filename_p (const char *filename
)
10214 return startswith (filename
, REMOTE_SYSROOT_PREFIX
);
10218 remote_bfd_open (const char *remote_file
, const char *target
)
10220 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10221 remote_bfd_iovec_open
, NULL
,
10222 remote_bfd_iovec_pread
,
10223 remote_bfd_iovec_close
,
10224 remote_bfd_iovec_stat
);
10230 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10232 struct cleanup
*back_to
, *close_cleanup
;
10233 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10236 int bytes_in_buffer
;
10239 struct remote_state
*rs
= get_remote_state ();
10241 if (!rs
->remote_desc
)
10242 error (_("command can only be used with remote target"));
10244 file
= gdb_fopen_cloexec (local_file
, "rb");
10246 perror_with_name (local_file
);
10247 back_to
= make_cleanup_fclose (file
);
10249 fd
= remote_hostio_open (find_target_at (process_stratum
),
10250 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10252 0700, &remote_errno
);
10254 remote_hostio_error (remote_errno
);
10256 /* Send up to this many bytes at once. They won't all fit in the
10257 remote packet limit, so we'll transfer slightly fewer. */
10258 io_size
= get_remote_packet_size ();
10259 buffer
= xmalloc (io_size
);
10260 make_cleanup (xfree
, buffer
);
10262 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10264 bytes_in_buffer
= 0;
10267 while (bytes_in_buffer
|| !saw_eof
)
10271 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10272 io_size
- bytes_in_buffer
,
10277 error (_("Error reading %s."), local_file
);
10280 /* EOF. Unless there is something still in the
10281 buffer from the last iteration, we are done. */
10283 if (bytes_in_buffer
== 0)
10291 bytes
+= bytes_in_buffer
;
10292 bytes_in_buffer
= 0;
10294 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10296 offset
, &remote_errno
);
10299 remote_hostio_error (remote_errno
);
10300 else if (retcode
== 0)
10301 error (_("Remote write of %d bytes returned 0!"), bytes
);
10302 else if (retcode
< bytes
)
10304 /* Short write. Save the rest of the read data for the next
10306 bytes_in_buffer
= bytes
- retcode
;
10307 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10313 discard_cleanups (close_cleanup
);
10314 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10315 remote_hostio_error (remote_errno
);
10318 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10319 do_cleanups (back_to
);
10323 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10325 struct cleanup
*back_to
, *close_cleanup
;
10326 int fd
, remote_errno
, bytes
, io_size
;
10330 struct remote_state
*rs
= get_remote_state ();
10332 if (!rs
->remote_desc
)
10333 error (_("command can only be used with remote target"));
10335 fd
= remote_hostio_open (find_target_at (process_stratum
),
10336 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10338 remote_hostio_error (remote_errno
);
10340 file
= gdb_fopen_cloexec (local_file
, "wb");
10342 perror_with_name (local_file
);
10343 back_to
= make_cleanup_fclose (file
);
10345 /* Send up to this many bytes at once. They won't all fit in the
10346 remote packet limit, so we'll transfer slightly fewer. */
10347 io_size
= get_remote_packet_size ();
10348 buffer
= xmalloc (io_size
);
10349 make_cleanup (xfree
, buffer
);
10351 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10356 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10357 fd
, buffer
, io_size
, offset
, &remote_errno
);
10359 /* Success, but no bytes, means end-of-file. */
10362 remote_hostio_error (remote_errno
);
10366 bytes
= fwrite (buffer
, 1, bytes
, file
);
10368 perror_with_name (local_file
);
10371 discard_cleanups (close_cleanup
);
10372 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10373 remote_hostio_error (remote_errno
);
10376 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10377 do_cleanups (back_to
);
10381 remote_file_delete (const char *remote_file
, int from_tty
)
10383 int retcode
, remote_errno
;
10384 struct remote_state
*rs
= get_remote_state ();
10386 if (!rs
->remote_desc
)
10387 error (_("command can only be used with remote target"));
10389 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10390 remote_file
, &remote_errno
);
10392 remote_hostio_error (remote_errno
);
10395 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10399 remote_put_command (char *args
, int from_tty
)
10401 struct cleanup
*back_to
;
10405 error_no_arg (_("file to put"));
10407 argv
= gdb_buildargv (args
);
10408 back_to
= make_cleanup_freeargv (argv
);
10409 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10410 error (_("Invalid parameters to remote put"));
10412 remote_file_put (argv
[0], argv
[1], from_tty
);
10414 do_cleanups (back_to
);
10418 remote_get_command (char *args
, int from_tty
)
10420 struct cleanup
*back_to
;
10424 error_no_arg (_("file to get"));
10426 argv
= gdb_buildargv (args
);
10427 back_to
= make_cleanup_freeargv (argv
);
10428 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10429 error (_("Invalid parameters to remote get"));
10431 remote_file_get (argv
[0], argv
[1], from_tty
);
10433 do_cleanups (back_to
);
10437 remote_delete_command (char *args
, int from_tty
)
10439 struct cleanup
*back_to
;
10443 error_no_arg (_("file to delete"));
10445 argv
= gdb_buildargv (args
);
10446 back_to
= make_cleanup_freeargv (argv
);
10447 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10448 error (_("Invalid parameters to remote delete"));
10450 remote_file_delete (argv
[0], from_tty
);
10452 do_cleanups (back_to
);
10456 remote_command (char *args
, int from_tty
)
10458 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
10462 remote_can_execute_reverse (struct target_ops
*self
)
10464 if (packet_support (PACKET_bs
) == PACKET_ENABLE
10465 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
10472 remote_supports_non_stop (struct target_ops
*self
)
10478 remote_supports_disable_randomization (struct target_ops
*self
)
10480 /* Only supported in extended mode. */
10485 remote_supports_multi_process (struct target_ops
*self
)
10487 struct remote_state
*rs
= get_remote_state ();
10489 /* Only extended-remote handles being attached to multiple
10490 processes, even though plain remote can use the multi-process
10491 thread id extensions, so that GDB knows the target process's
10493 return rs
->extended
&& remote_multi_process_p (rs
);
10497 remote_supports_cond_tracepoints (void)
10499 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
10503 remote_supports_cond_breakpoints (struct target_ops
*self
)
10505 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
10509 remote_supports_fast_tracepoints (void)
10511 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
10515 remote_supports_static_tracepoints (void)
10517 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
10521 remote_supports_install_in_trace (void)
10523 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
10527 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10529 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
10534 remote_supports_string_tracing (struct target_ops
*self
)
10536 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
10540 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10542 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
10546 remote_trace_init (struct target_ops
*self
)
10549 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10550 if (strcmp (target_buf
, "OK") != 0)
10551 error (_("Target does not support this command."));
10554 static void free_actions_list (char **actions_list
);
10555 static void free_actions_list_cleanup_wrapper (void *);
10557 free_actions_list_cleanup_wrapper (void *al
)
10559 free_actions_list (al
);
10563 free_actions_list (char **actions_list
)
10567 if (actions_list
== 0)
10570 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10571 xfree (actions_list
[ndx
]);
10573 xfree (actions_list
);
10576 /* Recursive routine to walk through command list including loops, and
10577 download packets for each command. */
10580 remote_download_command_source (int num
, ULONGEST addr
,
10581 struct command_line
*cmds
)
10583 struct remote_state
*rs
= get_remote_state ();
10584 struct command_line
*cmd
;
10586 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10588 QUIT
; /* Allow user to bail out with ^C. */
10589 strcpy (rs
->buf
, "QTDPsrc:");
10590 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10591 rs
->buf
+ strlen (rs
->buf
),
10592 rs
->buf_size
- strlen (rs
->buf
));
10594 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10595 if (strcmp (target_buf
, "OK"))
10596 warning (_("Target does not support source download."));
10598 if (cmd
->control_type
== while_control
10599 || cmd
->control_type
== while_stepping_control
)
10601 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10603 QUIT
; /* Allow user to bail out with ^C. */
10604 strcpy (rs
->buf
, "QTDPsrc:");
10605 encode_source_string (num
, addr
, "cmd", "end",
10606 rs
->buf
+ strlen (rs
->buf
),
10607 rs
->buf_size
- strlen (rs
->buf
));
10609 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10610 if (strcmp (target_buf
, "OK"))
10611 warning (_("Target does not support source download."));
10617 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10619 #define BUF_SIZE 2048
10623 char buf
[BUF_SIZE
];
10624 char **tdp_actions
;
10625 char **stepping_actions
;
10627 struct cleanup
*old_chain
= NULL
;
10628 struct agent_expr
*aexpr
;
10629 struct cleanup
*aexpr_chain
= NULL
;
10631 struct breakpoint
*b
= loc
->owner
;
10632 struct tracepoint
*t
= (struct tracepoint
*) b
;
10634 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10635 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10637 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10640 tpaddr
= loc
->address
;
10641 sprintf_vma (addrbuf
, tpaddr
);
10642 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10643 addrbuf
, /* address */
10644 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10645 t
->step_count
, t
->pass_count
);
10646 /* Fast tracepoints are mostly handled by the target, but we can
10647 tell the target how big of an instruction block should be moved
10649 if (b
->type
== bp_fast_tracepoint
)
10651 /* Only test for support at download time; we may not know
10652 target capabilities at definition time. */
10653 if (remote_supports_fast_tracepoints ())
10657 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10658 tpaddr
, &isize
, NULL
))
10659 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10662 /* If it passed validation at definition but fails now,
10663 something is very wrong. */
10664 internal_error (__FILE__
, __LINE__
,
10665 _("Fast tracepoint not "
10666 "valid during download"));
10669 /* Fast tracepoints are functionally identical to regular
10670 tracepoints, so don't take lack of support as a reason to
10671 give up on the trace run. */
10672 warning (_("Target does not support fast tracepoints, "
10673 "downloading %d as regular tracepoint"), b
->number
);
10675 else if (b
->type
== bp_static_tracepoint
)
10677 /* Only test for support at download time; we may not know
10678 target capabilities at definition time. */
10679 if (remote_supports_static_tracepoints ())
10681 struct static_tracepoint_marker marker
;
10683 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10684 strcat (buf
, ":S");
10686 error (_("Static tracepoint not valid during download"));
10689 /* Fast tracepoints are functionally identical to regular
10690 tracepoints, so don't take lack of support as a reason
10691 to give up on the trace run. */
10692 error (_("Target does not support static tracepoints"));
10694 /* If the tracepoint has a conditional, make it into an agent
10695 expression and append to the definition. */
10698 /* Only test support at download time, we may not know target
10699 capabilities at definition time. */
10700 if (remote_supports_cond_tracepoints ())
10702 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10703 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10704 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10706 pkt
= buf
+ strlen (buf
);
10707 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10708 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10710 do_cleanups (aexpr_chain
);
10713 warning (_("Target does not support conditional tracepoints, "
10714 "ignoring tp %d cond"), b
->number
);
10717 if (b
->commands
|| *default_collect
)
10720 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10721 if (strcmp (target_buf
, "OK"))
10722 error (_("Target does not support tracepoints."));
10724 /* do_single_steps (t); */
10727 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10729 QUIT
; /* Allow user to bail out with ^C. */
10730 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10731 b
->number
, addrbuf
, /* address */
10733 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10736 remote_get_noisy_reply (&target_buf
,
10738 if (strcmp (target_buf
, "OK"))
10739 error (_("Error on target while setting tracepoints."));
10742 if (stepping_actions
)
10744 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10746 QUIT
; /* Allow user to bail out with ^C. */
10747 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10748 b
->number
, addrbuf
, /* address */
10749 ((ndx
== 0) ? "S" : ""),
10750 stepping_actions
[ndx
],
10751 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10753 remote_get_noisy_reply (&target_buf
,
10755 if (strcmp (target_buf
, "OK"))
10756 error (_("Error on target while setting tracepoints."));
10760 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
10762 if (b
->addr_string
)
10764 strcpy (buf
, "QTDPsrc:");
10765 encode_source_string (b
->number
, loc
->address
,
10766 "at", b
->addr_string
, buf
+ strlen (buf
),
10767 2048 - strlen (buf
));
10770 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10771 if (strcmp (target_buf
, "OK"))
10772 warning (_("Target does not support source download."));
10774 if (b
->cond_string
)
10776 strcpy (buf
, "QTDPsrc:");
10777 encode_source_string (b
->number
, loc
->address
,
10778 "cond", b
->cond_string
, buf
+ strlen (buf
),
10779 2048 - strlen (buf
));
10781 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10782 if (strcmp (target_buf
, "OK"))
10783 warning (_("Target does not support source download."));
10785 remote_download_command_source (b
->number
, loc
->address
,
10786 breakpoint_commands (b
));
10789 do_cleanups (old_chain
);
10793 remote_can_download_tracepoint (struct target_ops
*self
)
10795 struct remote_state
*rs
= get_remote_state ();
10796 struct trace_status
*ts
;
10799 /* Don't try to install tracepoints until we've relocated our
10800 symbols, and fetched and merged the target's tracepoint list with
10802 if (rs
->starting_up
)
10805 ts
= current_trace_status ();
10806 status
= remote_get_trace_status (self
, ts
);
10808 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10811 /* If we are in a tracing experiment, but remote stub doesn't support
10812 installing tracepoint in trace, we have to return. */
10813 if (!remote_supports_install_in_trace ())
10821 remote_download_trace_state_variable (struct target_ops
*self
,
10822 struct trace_state_variable
*tsv
)
10824 struct remote_state
*rs
= get_remote_state ();
10827 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10828 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10830 p
= rs
->buf
+ strlen (rs
->buf
);
10831 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10832 error (_("Trace state variable name too long for tsv definition packet"));
10833 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10836 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10837 if (*target_buf
== '\0')
10838 error (_("Target does not support this command."));
10839 if (strcmp (target_buf
, "OK") != 0)
10840 error (_("Error on target while downloading trace state variable."));
10844 remote_enable_tracepoint (struct target_ops
*self
,
10845 struct bp_location
*location
)
10847 struct remote_state
*rs
= get_remote_state ();
10850 sprintf_vma (addr_buf
, location
->address
);
10851 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10852 location
->owner
->number
, addr_buf
);
10854 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10855 if (*rs
->buf
== '\0')
10856 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10857 if (strcmp (rs
->buf
, "OK") != 0)
10858 error (_("Error on target while enabling tracepoint."));
10862 remote_disable_tracepoint (struct target_ops
*self
,
10863 struct bp_location
*location
)
10865 struct remote_state
*rs
= get_remote_state ();
10868 sprintf_vma (addr_buf
, location
->address
);
10869 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10870 location
->owner
->number
, addr_buf
);
10872 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10873 if (*rs
->buf
== '\0')
10874 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10875 if (strcmp (rs
->buf
, "OK") != 0)
10876 error (_("Error on target while disabling tracepoint."));
10880 remote_trace_set_readonly_regions (struct target_ops
*self
)
10884 bfd_size_type size
;
10890 return; /* No information to give. */
10892 strcpy (target_buf
, "QTro");
10893 offset
= strlen (target_buf
);
10894 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10896 char tmp1
[40], tmp2
[40];
10899 if ((s
->flags
& SEC_LOAD
) == 0 ||
10900 /* (s->flags & SEC_CODE) == 0 || */
10901 (s
->flags
& SEC_READONLY
) == 0)
10905 vma
= bfd_get_section_vma (abfd
, s
);
10906 size
= bfd_get_section_size (s
);
10907 sprintf_vma (tmp1
, vma
);
10908 sprintf_vma (tmp2
, vma
+ size
);
10909 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10910 if (offset
+ sec_length
+ 1 > target_buf_size
)
10912 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
10914 Too many sections for read-only sections definition packet."));
10917 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10919 offset
+= sec_length
;
10923 putpkt (target_buf
);
10924 getpkt (&target_buf
, &target_buf_size
, 0);
10929 remote_trace_start (struct target_ops
*self
)
10931 putpkt ("QTStart");
10932 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10933 if (*target_buf
== '\0')
10934 error (_("Target does not support this command."));
10935 if (strcmp (target_buf
, "OK") != 0)
10936 error (_("Bogus reply from target: %s"), target_buf
);
10940 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
10942 /* Initialize it just to avoid a GCC false warning. */
10944 /* FIXME we need to get register block size some other way. */
10945 extern int trace_regblock_size
;
10946 volatile struct gdb_exception ex
;
10947 enum packet_result result
;
10949 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
10952 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10954 putpkt ("qTStatus");
10956 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10958 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10962 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10964 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10967 throw_exception (ex
);
10970 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10972 /* If the remote target doesn't do tracing, flag it. */
10973 if (result
== PACKET_UNKNOWN
)
10976 /* We're working with a live target. */
10977 ts
->filename
= NULL
;
10980 error (_("Bogus trace status reply from target: %s"), target_buf
);
10982 /* Function 'parse_trace_status' sets default value of each field of
10983 'ts' at first, so we don't have to do it here. */
10984 parse_trace_status (p
, ts
);
10986 return ts
->running
;
10990 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
10991 struct uploaded_tp
*utp
)
10993 struct remote_state
*rs
= get_remote_state ();
10995 struct bp_location
*loc
;
10996 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10997 size_t size
= get_remote_packet_size ();
11001 tp
->base
.hit_count
= 0;
11002 tp
->traceframe_usage
= 0;
11003 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
11005 /* If the tracepoint was never downloaded, don't go asking for
11007 if (tp
->number_on_target
== 0)
11009 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
11010 phex_nz (loc
->address
, 0));
11012 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11013 if (reply
&& *reply
)
11016 parse_tracepoint_status (reply
+ 1, bp
, utp
);
11022 utp
->hit_count
= 0;
11023 utp
->traceframe_usage
= 0;
11024 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
11025 phex_nz (utp
->addr
, 0));
11027 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11028 if (reply
&& *reply
)
11031 parse_tracepoint_status (reply
+ 1, bp
, utp
);
11037 remote_trace_stop (struct target_ops
*self
)
11040 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11041 if (*target_buf
== '\0')
11042 error (_("Target does not support this command."));
11043 if (strcmp (target_buf
, "OK") != 0)
11044 error (_("Bogus reply from target: %s"), target_buf
);
11048 remote_trace_find (struct target_ops
*self
,
11049 enum trace_find_type type
, int num
,
11050 CORE_ADDR addr1
, CORE_ADDR addr2
,
11053 struct remote_state
*rs
= get_remote_state ();
11054 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11056 int target_frameno
= -1, target_tracept
= -1;
11058 /* Lookups other than by absolute frame number depend on the current
11059 trace selected, so make sure it is correct on the remote end
11061 if (type
!= tfind_number
)
11062 set_remote_traceframe ();
11065 strcpy (p
, "QTFrame:");
11066 p
= strchr (p
, '\0');
11070 xsnprintf (p
, endbuf
- p
, "%x", num
);
11073 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
11076 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
11079 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
11080 phex_nz (addr2
, 0));
11082 case tfind_outside
:
11083 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
11084 phex_nz (addr2
, 0));
11087 error (_("Unknown trace find type %d"), type
);
11091 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
11092 if (*reply
== '\0')
11093 error (_("Target does not support this command."));
11095 while (reply
&& *reply
)
11100 target_frameno
= (int) strtol (p
, &reply
, 16);
11102 error (_("Unable to parse trace frame number"));
11103 /* Don't update our remote traceframe number cache on failure
11104 to select a remote traceframe. */
11105 if (target_frameno
== -1)
11110 target_tracept
= (int) strtol (p
, &reply
, 16);
11112 error (_("Unable to parse tracepoint number"));
11114 case 'O': /* "OK"? */
11115 if (reply
[1] == 'K' && reply
[2] == '\0')
11118 error (_("Bogus reply from target: %s"), reply
);
11121 error (_("Bogus reply from target: %s"), reply
);
11124 *tpp
= target_tracept
;
11126 rs
->remote_traceframe_number
= target_frameno
;
11127 return target_frameno
;
11131 remote_get_trace_state_variable_value (struct target_ops
*self
,
11132 int tsvnum
, LONGEST
*val
)
11134 struct remote_state
*rs
= get_remote_state ();
11138 set_remote_traceframe ();
11140 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11142 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11143 if (reply
&& *reply
)
11147 unpack_varlen_hex (reply
+ 1, &uval
);
11148 *val
= (LONGEST
) uval
;
11156 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
11158 struct remote_state
*rs
= get_remote_state ();
11162 strcpy (p
, "QTSave:");
11164 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11165 error (_("Remote file name too long for trace save packet"));
11166 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
11169 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11170 if (*reply
== '\0')
11171 error (_("Target does not support this command."));
11172 if (strcmp (reply
, "OK") != 0)
11173 error (_("Bogus reply from target: %s"), reply
);
11177 /* This is basically a memory transfer, but needs to be its own packet
11178 because we don't know how the target actually organizes its trace
11179 memory, plus we want to be able to ask for as much as possible, but
11180 not be unhappy if we don't get as much as we ask for. */
11183 remote_get_raw_trace_data (struct target_ops
*self
,
11184 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11186 struct remote_state
*rs
= get_remote_state ();
11192 strcpy (p
, "qTBuffer:");
11194 p
+= hexnumstr (p
, offset
);
11196 p
+= hexnumstr (p
, len
);
11200 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11201 if (reply
&& *reply
)
11203 /* 'l' by itself means we're at the end of the buffer and
11204 there is nothing more to get. */
11208 /* Convert the reply into binary. Limit the number of bytes to
11209 convert according to our passed-in buffer size, rather than
11210 what was returned in the packet; if the target is
11211 unexpectedly generous and gives us a bigger reply than we
11212 asked for, we don't want to crash. */
11213 rslt
= hex2bin (target_buf
, buf
, len
);
11217 /* Something went wrong, flag as an error. */
11222 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
11224 struct remote_state
*rs
= get_remote_state ();
11226 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
11230 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11232 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11233 if (*reply
== '\0')
11234 error (_("Target does not support this command."));
11235 if (strcmp (reply
, "OK") != 0)
11236 error (_("Bogus reply from target: %s"), reply
);
11239 warning (_("Target does not support disconnected tracing."));
11243 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11245 struct thread_info
*info
= find_thread_ptid (ptid
);
11247 if (info
&& info
->priv
)
11248 return info
->priv
->core
;
11253 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
11255 struct remote_state
*rs
= get_remote_state ();
11258 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11260 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11261 if (*reply
== '\0')
11262 error (_("Target does not support this command."));
11263 if (strcmp (reply
, "OK") != 0)
11264 error (_("Bogus reply from target: %s"), reply
);
11267 static struct traceframe_info
*
11268 remote_traceframe_info (struct target_ops
*self
)
11272 text
= target_read_stralloc (¤t_target
,
11273 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11276 struct traceframe_info
*info
;
11277 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11279 info
= parse_traceframe_info (text
);
11280 do_cleanups (back_to
);
11287 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11288 instruction on which a fast tracepoint may be placed. Returns -1
11289 if the packet is not supported, and 0 if the minimum instruction
11290 length is unknown. */
11293 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
11295 struct remote_state
*rs
= get_remote_state ();
11298 /* If we're not debugging a process yet, the IPA can't be
11300 if (!target_has_execution
)
11303 /* Make sure the remote is pointing at the right process. */
11304 set_general_process ();
11306 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11308 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11309 if (*reply
== '\0')
11313 ULONGEST min_insn_len
;
11315 unpack_varlen_hex (reply
, &min_insn_len
);
11317 return (int) min_insn_len
;
11322 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
11324 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
11326 struct remote_state
*rs
= get_remote_state ();
11327 char *buf
= rs
->buf
;
11328 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11329 enum packet_result result
;
11331 gdb_assert (val
>= 0 || val
== -1);
11332 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11333 /* Send -1 as literal "-1" to avoid host size dependency. */
11337 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11340 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11343 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11344 result
= packet_ok (rs
->buf
,
11345 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11347 if (result
!= PACKET_OK
)
11348 warning (_("Bogus reply from target: %s"), rs
->buf
);
11353 remote_set_trace_notes (struct target_ops
*self
,
11354 const char *user
, const char *notes
,
11355 const char *stop_notes
)
11357 struct remote_state
*rs
= get_remote_state ();
11359 char *buf
= rs
->buf
;
11360 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11363 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11366 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11367 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11373 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11374 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11380 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11381 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11385 /* Ensure the buffer is terminated. */
11389 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11390 if (*reply
== '\0')
11393 if (strcmp (reply
, "OK") != 0)
11394 error (_("Bogus reply from target: %s"), reply
);
11400 remote_use_agent (struct target_ops
*self
, int use
)
11402 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
11404 struct remote_state
*rs
= get_remote_state ();
11406 /* If the stub supports QAgent. */
11407 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11409 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11411 if (strcmp (rs
->buf
, "OK") == 0)
11422 remote_can_use_agent (struct target_ops
*self
)
11424 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
11427 struct btrace_target_info
11429 /* The ptid of the traced thread. */
11432 /* The obtained branch trace configuration. */
11433 struct btrace_config conf
;
11436 /* Reset our idea of our target's btrace configuration. */
11439 remote_btrace_reset (void)
11441 struct remote_state
*rs
= get_remote_state ();
11443 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
11446 /* Check whether the target supports branch tracing. */
11449 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
11451 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
11453 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
11458 case BTRACE_FORMAT_NONE
:
11461 case BTRACE_FORMAT_BTS
:
11462 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
11465 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
11468 /* Synchronize the configuration with the target. */
11471 btrace_sync_conf (const struct btrace_config
*conf
)
11473 struct packet_config
*packet
;
11474 struct remote_state
*rs
;
11475 char *buf
, *pos
, *endbuf
;
11477 rs
= get_remote_state ();
11479 endbuf
= buf
+ get_remote_packet_size ();
11481 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
11482 if (packet_config_support (packet
) == PACKET_ENABLE
11483 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
11486 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
11490 getpkt (&buf
, &rs
->buf_size
, 0);
11492 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
11494 if (buf
[0] == 'E' && buf
[1] == '.')
11495 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
11497 error (_("Failed to configure the BTS buffer size."));
11500 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
11504 /* Read the current thread's btrace configuration from the target and
11505 store it into CONF. */
11508 btrace_read_config (struct btrace_config
*conf
)
11512 xml
= target_read_stralloc (¤t_target
,
11513 TARGET_OBJECT_BTRACE_CONF
, "");
11516 struct cleanup
*cleanup
;
11518 cleanup
= make_cleanup (xfree
, xml
);
11519 parse_xml_btrace_conf (conf
, xml
);
11520 do_cleanups (cleanup
);
11524 /* Enable branch tracing. */
11526 static struct btrace_target_info
*
11527 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
11528 const struct btrace_config
*conf
)
11530 struct btrace_target_info
*tinfo
= NULL
;
11531 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11532 struct remote_state
*rs
= get_remote_state ();
11533 char *buf
= rs
->buf
;
11534 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11535 volatile struct gdb_exception err
;
11537 if (packet_config_support (packet
) != PACKET_ENABLE
)
11538 error (_("Target does not support branch tracing."));
11540 btrace_sync_conf (conf
);
11542 set_general_thread (ptid
);
11544 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11546 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11548 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11550 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11551 error (_("Could not enable branch tracing for %s: %s"),
11552 target_pid_to_str (ptid
), rs
->buf
+ 2);
11554 error (_("Could not enable branch tracing for %s."),
11555 target_pid_to_str (ptid
));
11558 tinfo
= xzalloc (sizeof (*tinfo
));
11559 tinfo
->ptid
= ptid
;
11561 /* If we fail to read the configuration, we lose some information, but the
11562 tracing itself is not impacted. */
11563 TRY_CATCH (err
, RETURN_MASK_ERROR
)
11564 btrace_read_config (&tinfo
->conf
);
11566 if (err
.message
!= NULL
)
11567 warning ("%s", err
.message
);
11572 /* Disable branch tracing. */
11575 remote_disable_btrace (struct target_ops
*self
,
11576 struct btrace_target_info
*tinfo
)
11578 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11579 struct remote_state
*rs
= get_remote_state ();
11580 char *buf
= rs
->buf
;
11581 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11583 if (packet_config_support (packet
) != PACKET_ENABLE
)
11584 error (_("Target does not support branch tracing."));
11586 set_general_thread (tinfo
->ptid
);
11588 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11590 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11592 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11594 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11595 error (_("Could not disable branch tracing for %s: %s"),
11596 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11598 error (_("Could not disable branch tracing for %s."),
11599 target_pid_to_str (tinfo
->ptid
));
11605 /* Teardown branch tracing. */
11608 remote_teardown_btrace (struct target_ops
*self
,
11609 struct btrace_target_info
*tinfo
)
11611 /* We must not talk to the target during teardown. */
11615 /* Read the branch trace. */
11617 static enum btrace_error
11618 remote_read_btrace (struct target_ops
*self
,
11619 struct btrace_data
*btrace
,
11620 struct btrace_target_info
*tinfo
,
11621 enum btrace_read_type type
)
11623 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11624 struct remote_state
*rs
= get_remote_state ();
11625 struct cleanup
*cleanup
;
11629 if (packet_config_support (packet
) != PACKET_ENABLE
)
11630 error (_("Target does not support branch tracing."));
11632 #if !defined(HAVE_LIBEXPAT)
11633 error (_("Cannot process branch tracing result. XML parsing not supported."));
11638 case BTRACE_READ_ALL
:
11641 case BTRACE_READ_NEW
:
11644 case BTRACE_READ_DELTA
:
11648 internal_error (__FILE__
, __LINE__
,
11649 _("Bad branch tracing read type: %u."),
11650 (unsigned int) type
);
11653 xml
= target_read_stralloc (¤t_target
,
11654 TARGET_OBJECT_BTRACE
, annex
);
11656 return BTRACE_ERR_UNKNOWN
;
11658 cleanup
= make_cleanup (xfree
, xml
);
11659 parse_xml_btrace (btrace
, xml
);
11660 do_cleanups (cleanup
);
11662 return BTRACE_ERR_NONE
;
11665 static const struct btrace_config
*
11666 remote_btrace_conf (struct target_ops
*self
,
11667 const struct btrace_target_info
*tinfo
)
11669 return &tinfo
->conf
;
11673 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
11675 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
11679 /* Implementation of to_load. */
11682 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
11684 generic_load (name
, from_tty
);
11688 init_remote_ops (void)
11690 remote_ops
.to_shortname
= "remote";
11691 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11692 remote_ops
.to_doc
=
11693 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11694 Specify the serial device it is connected to\n\
11695 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11696 remote_ops
.to_open
= remote_open
;
11697 remote_ops
.to_close
= remote_close
;
11698 remote_ops
.to_detach
= remote_detach
;
11699 remote_ops
.to_disconnect
= remote_disconnect
;
11700 remote_ops
.to_resume
= remote_resume
;
11701 remote_ops
.to_wait
= remote_wait
;
11702 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11703 remote_ops
.to_store_registers
= remote_store_registers
;
11704 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11705 remote_ops
.to_files_info
= remote_files_info
;
11706 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11707 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11708 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
11709 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
11710 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
11711 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
11712 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11713 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11714 remote_ops
.to_watchpoint_addr_within_range
=
11715 remote_watchpoint_addr_within_range
;
11716 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11717 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11718 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11719 remote_ops
.to_region_ok_for_hw_watchpoint
11720 = remote_region_ok_for_hw_watchpoint
;
11721 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11722 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11723 remote_ops
.to_kill
= remote_kill
;
11724 remote_ops
.to_load
= remote_load
;
11725 remote_ops
.to_mourn_inferior
= remote_mourn
;
11726 remote_ops
.to_pass_signals
= remote_pass_signals
;
11727 remote_ops
.to_program_signals
= remote_program_signals
;
11728 remote_ops
.to_thread_alive
= remote_thread_alive
;
11729 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
11730 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11731 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11732 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11733 remote_ops
.to_stop
= remote_stop
;
11734 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11735 remote_ops
.to_rcmd
= remote_rcmd
;
11736 remote_ops
.to_log_command
= serial_log_command
;
11737 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11738 remote_ops
.to_stratum
= process_stratum
;
11739 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11740 remote_ops
.to_has_memory
= default_child_has_memory
;
11741 remote_ops
.to_has_stack
= default_child_has_stack
;
11742 remote_ops
.to_has_registers
= default_child_has_registers
;
11743 remote_ops
.to_has_execution
= default_child_has_execution
;
11744 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11745 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11746 remote_ops
.to_magic
= OPS_MAGIC
;
11747 remote_ops
.to_memory_map
= remote_memory_map
;
11748 remote_ops
.to_flash_erase
= remote_flash_erase
;
11749 remote_ops
.to_flash_done
= remote_flash_done
;
11750 remote_ops
.to_read_description
= remote_read_description
;
11751 remote_ops
.to_search_memory
= remote_search_memory
;
11752 remote_ops
.to_can_async_p
= remote_can_async_p
;
11753 remote_ops
.to_is_async_p
= remote_is_async_p
;
11754 remote_ops
.to_async
= remote_async
;
11755 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11756 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11757 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11758 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11759 remote_ops
.to_supports_disable_randomization
11760 = remote_supports_disable_randomization
;
11761 remote_ops
.to_fileio_open
= remote_hostio_open
;
11762 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11763 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11764 remote_ops
.to_fileio_close
= remote_hostio_close
;
11765 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11766 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11767 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11768 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11769 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11770 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11771 remote_ops
.to_trace_init
= remote_trace_init
;
11772 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11773 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11774 remote_ops
.to_download_trace_state_variable
11775 = remote_download_trace_state_variable
;
11776 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11777 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11778 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11779 remote_ops
.to_trace_start
= remote_trace_start
;
11780 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11781 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11782 remote_ops
.to_trace_stop
= remote_trace_stop
;
11783 remote_ops
.to_trace_find
= remote_trace_find
;
11784 remote_ops
.to_get_trace_state_variable_value
11785 = remote_get_trace_state_variable_value
;
11786 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11787 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11788 remote_ops
.to_upload_trace_state_variables
11789 = remote_upload_trace_state_variables
;
11790 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11791 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11792 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11793 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11794 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11795 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11796 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11797 remote_ops
.to_verify_memory
= remote_verify_memory
;
11798 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11799 remote_ops
.to_set_permissions
= remote_set_permissions
;
11800 remote_ops
.to_static_tracepoint_marker_at
11801 = remote_static_tracepoint_marker_at
;
11802 remote_ops
.to_static_tracepoint_markers_by_strid
11803 = remote_static_tracepoint_markers_by_strid
;
11804 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11805 remote_ops
.to_use_agent
= remote_use_agent
;
11806 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11807 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11808 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11809 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11810 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11811 remote_ops
.to_read_btrace
= remote_read_btrace
;
11812 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
11813 remote_ops
.to_augmented_libraries_svr4_read
=
11814 remote_augmented_libraries_svr4_read
;
11817 /* Set up the extended remote vector by making a copy of the standard
11818 remote vector and adding to it. */
11821 init_extended_remote_ops (void)
11823 extended_remote_ops
= remote_ops
;
11825 extended_remote_ops
.to_shortname
= "extended-remote";
11826 extended_remote_ops
.to_longname
=
11827 "Extended remote serial target in gdb-specific protocol";
11828 extended_remote_ops
.to_doc
=
11829 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11830 Specify the serial device it is connected to (e.g. /dev/ttya).";
11831 extended_remote_ops
.to_open
= extended_remote_open
;
11832 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11833 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11834 extended_remote_ops
.to_detach
= extended_remote_detach
;
11835 extended_remote_ops
.to_attach
= extended_remote_attach
;
11836 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
11837 extended_remote_ops
.to_kill
= extended_remote_kill
;
11838 extended_remote_ops
.to_supports_disable_randomization
11839 = extended_remote_supports_disable_randomization
;
11843 remote_can_async_p (struct target_ops
*ops
)
11845 struct remote_state
*rs
= get_remote_state ();
11847 if (!target_async_permitted
)
11848 /* We only enable async when the user specifically asks for it. */
11851 /* We're async whenever the serial device is. */
11852 return serial_can_async_p (rs
->remote_desc
);
11856 remote_is_async_p (struct target_ops
*ops
)
11858 struct remote_state
*rs
= get_remote_state ();
11860 if (!target_async_permitted
)
11861 /* We only enable async when the user specifically asks for it. */
11864 /* We're async whenever the serial device is. */
11865 return serial_is_async_p (rs
->remote_desc
);
11868 /* Pass the SERIAL event on and up to the client. One day this code
11869 will be able to delay notifying the client of an event until the
11870 point where an entire packet has been received. */
11872 static serial_event_ftype remote_async_serial_handler
;
11875 remote_async_serial_handler (struct serial
*scb
, void *context
)
11877 struct remote_state
*rs
= context
;
11879 /* Don't propogate error information up to the client. Instead let
11880 the client find out about the error by querying the target. */
11881 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11885 remote_async_inferior_event_handler (gdb_client_data data
)
11887 inferior_event_handler (INF_REG_EVENT
, NULL
);
11891 remote_async (struct target_ops
*ops
,
11892 void (*callback
) (enum inferior_event_type event_type
,
11896 struct remote_state
*rs
= get_remote_state ();
11898 if (callback
!= NULL
)
11900 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11901 rs
->async_client_callback
= callback
;
11902 rs
->async_client_context
= context
;
11904 /* If there are pending events in the stop reply queue tell the
11905 event loop to process them. */
11906 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
11907 mark_async_event_handler (remote_async_inferior_event_token
);
11911 serial_async (rs
->remote_desc
, NULL
, NULL
);
11912 clear_async_event_handler (remote_async_inferior_event_token
);
11917 set_remote_cmd (char *args
, int from_tty
)
11919 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
11923 show_remote_cmd (char *args
, int from_tty
)
11925 /* We can't just use cmd_show_list here, because we want to skip
11926 the redundant "show remote Z-packet" and the legacy aliases. */
11927 struct cleanup
*showlist_chain
;
11928 struct cmd_list_element
*list
= remote_show_cmdlist
;
11929 struct ui_out
*uiout
= current_uiout
;
11931 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11932 for (; list
!= NULL
; list
= list
->next
)
11933 if (strcmp (list
->name
, "Z-packet") == 0)
11935 else if (list
->type
== not_set_cmd
)
11936 /* Alias commands are exactly like the original, except they
11937 don't have the normal type. */
11941 struct cleanup
*option_chain
11942 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11944 ui_out_field_string (uiout
, "name", list
->name
);
11945 ui_out_text (uiout
, ": ");
11946 if (list
->type
== show_cmd
)
11947 do_show_command ((char *) NULL
, from_tty
, list
);
11949 cmd_func (list
, NULL
, from_tty
);
11950 /* Close the tuple. */
11951 do_cleanups (option_chain
);
11954 /* Close the tuple. */
11955 do_cleanups (showlist_chain
);
11959 /* Function to be called whenever a new objfile (shlib) is detected. */
11961 remote_new_objfile (struct objfile
*objfile
)
11963 struct remote_state
*rs
= get_remote_state ();
11965 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11966 remote_check_symbols ();
11969 /* Pull all the tracepoints defined on the target and create local
11970 data structures representing them. We don't want to create real
11971 tracepoints yet, we don't want to mess up the user's existing
11975 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
11977 struct remote_state
*rs
= get_remote_state ();
11980 /* Ask for a first packet of tracepoint definition. */
11982 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11984 while (*p
&& *p
!= 'l')
11986 parse_tracepoint_definition (p
, utpp
);
11987 /* Ask for another packet of tracepoint definition. */
11989 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11996 remote_upload_trace_state_variables (struct target_ops
*self
,
11997 struct uploaded_tsv
**utsvp
)
11999 struct remote_state
*rs
= get_remote_state ();
12002 /* Ask for a first packet of variable definition. */
12004 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12006 while (*p
&& *p
!= 'l')
12008 parse_tsv_definition (p
, utsvp
);
12009 /* Ask for another packet of variable definition. */
12011 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12017 /* The "set/show range-stepping" show hook. */
12020 show_range_stepping (struct ui_file
*file
, int from_tty
,
12021 struct cmd_list_element
*c
,
12024 fprintf_filtered (file
,
12025 _("Debugger's willingness to use range stepping "
12026 "is %s.\n"), value
);
12029 /* The "set/show range-stepping" set hook. */
12032 set_range_stepping (char *ignore_args
, int from_tty
,
12033 struct cmd_list_element
*c
)
12035 struct remote_state
*rs
= get_remote_state ();
12037 /* Whene enabling, check whether range stepping is actually
12038 supported by the target, and warn if not. */
12039 if (use_range_stepping
)
12041 if (rs
->remote_desc
!= NULL
)
12043 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
12044 remote_vcont_probe (rs
);
12046 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
12047 && rs
->supports_vCont
.r
)
12051 warning (_("Range stepping is not supported by the current target"));
12056 _initialize_remote (void)
12058 struct remote_state
*rs
;
12059 struct cmd_list_element
*cmd
;
12060 const char *cmd_name
;
12062 /* architecture specific data */
12063 remote_gdbarch_data_handle
=
12064 gdbarch_data_register_post_init (init_remote_state
);
12065 remote_g_packet_data_handle
=
12066 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
12068 /* Initialize the per-target state. At the moment there is only one
12069 of these, not one per target. Only one target is active at a
12071 remote_state
= new_remote_state ();
12073 init_remote_ops ();
12074 add_target (&remote_ops
);
12076 init_extended_remote_ops ();
12077 add_target (&extended_remote_ops
);
12079 /* Hook into new objfile notification. */
12080 observer_attach_new_objfile (remote_new_objfile
);
12081 /* We're no longer interested in notification events of an inferior
12083 observer_attach_inferior_exit (discard_pending_stop_replies
);
12085 /* Set up signal handlers. */
12086 async_sigint_remote_token
=
12087 create_async_signal_handler (async_remote_interrupt
, NULL
);
12088 async_sigint_remote_twice_token
=
12089 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
12092 init_remote_threadtests ();
12095 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
12096 /* set/show remote ... */
12098 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
12099 Remote protocol specific variables\n\
12100 Configure various remote-protocol specific variables such as\n\
12101 the packets being used"),
12102 &remote_set_cmdlist
, "set remote ",
12103 0 /* allow-unknown */, &setlist
);
12104 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
12105 Remote protocol specific variables\n\
12106 Configure various remote-protocol specific variables such as\n\
12107 the packets being used"),
12108 &remote_show_cmdlist
, "show remote ",
12109 0 /* allow-unknown */, &showlist
);
12111 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
12112 Compare section data on target to the exec file.\n\
12113 Argument is a single section name (default: all loaded sections).\n\
12114 To compare only read-only loaded sections, specify the -r option."),
12117 add_cmd ("packet", class_maintenance
, packet_command
, _("\
12118 Send an arbitrary packet to a remote target.\n\
12119 maintenance packet TEXT\n\
12120 If GDB is talking to an inferior via the GDB serial protocol, then\n\
12121 this command sends the string TEXT to the inferior, and displays the\n\
12122 response packet. GDB supplies the initial `$' character, and the\n\
12123 terminating `#' character and checksum."),
12126 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
12127 Set whether to send break if interrupted."), _("\
12128 Show whether to send break if interrupted."), _("\
12129 If set, a break, instead of a cntrl-c, is sent to the remote target."),
12130 set_remotebreak
, show_remotebreak
,
12131 &setlist
, &showlist
);
12132 cmd_name
= "remotebreak";
12133 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
12134 deprecate_cmd (cmd
, "set remote interrupt-sequence");
12135 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
12136 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
12137 deprecate_cmd (cmd
, "show remote interrupt-sequence");
12139 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
12140 interrupt_sequence_modes
, &interrupt_sequence_mode
,
12142 Set interrupt sequence to remote target."), _("\
12143 Show interrupt sequence to remote target."), _("\
12144 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
12145 NULL
, show_interrupt_sequence
,
12146 &remote_set_cmdlist
,
12147 &remote_show_cmdlist
);
12149 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
12150 &interrupt_on_connect
, _("\
12151 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
12152 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
12153 If set, interrupt sequence is sent to remote target."),
12155 &remote_set_cmdlist
, &remote_show_cmdlist
);
12157 /* Install commands for configuring memory read/write packets. */
12159 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
12160 Set the maximum number of bytes per memory write packet (deprecated)."),
12162 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
12163 Show the maximum number of bytes per memory write packet (deprecated)."),
12165 add_cmd ("memory-write-packet-size", no_class
,
12166 set_memory_write_packet_size
, _("\
12167 Set the maximum number of bytes per memory-write packet.\n\
12168 Specify the number of bytes in a packet or 0 (zero) for the\n\
12169 default packet size. The actual limit is further reduced\n\
12170 dependent on the target. Specify ``fixed'' to disable the\n\
12171 further restriction and ``limit'' to enable that restriction."),
12172 &remote_set_cmdlist
);
12173 add_cmd ("memory-read-packet-size", no_class
,
12174 set_memory_read_packet_size
, _("\
12175 Set the maximum number of bytes per memory-read packet.\n\
12176 Specify the number of bytes in a packet or 0 (zero) for the\n\
12177 default packet size. The actual limit is further reduced\n\
12178 dependent on the target. Specify ``fixed'' to disable the\n\
12179 further restriction and ``limit'' to enable that restriction."),
12180 &remote_set_cmdlist
);
12181 add_cmd ("memory-write-packet-size", no_class
,
12182 show_memory_write_packet_size
,
12183 _("Show the maximum number of bytes per memory-write packet."),
12184 &remote_show_cmdlist
);
12185 add_cmd ("memory-read-packet-size", no_class
,
12186 show_memory_read_packet_size
,
12187 _("Show the maximum number of bytes per memory-read packet."),
12188 &remote_show_cmdlist
);
12190 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
12191 &remote_hw_watchpoint_limit
, _("\
12192 Set the maximum number of target hardware watchpoints."), _("\
12193 Show the maximum number of target hardware watchpoints."), _("\
12194 Specify a negative limit for unlimited."),
12195 NULL
, NULL
, /* FIXME: i18n: The maximum
12196 number of target hardware
12197 watchpoints is %s. */
12198 &remote_set_cmdlist
, &remote_show_cmdlist
);
12199 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
12200 &remote_hw_watchpoint_length_limit
, _("\
12201 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
12202 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
12203 Specify a negative limit for unlimited."),
12204 NULL
, NULL
, /* FIXME: i18n: The maximum
12205 length (in bytes) of a target
12206 hardware watchpoint is %s. */
12207 &remote_set_cmdlist
, &remote_show_cmdlist
);
12208 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
12209 &remote_hw_breakpoint_limit
, _("\
12210 Set the maximum number of target hardware breakpoints."), _("\
12211 Show the maximum number of target hardware breakpoints."), _("\
12212 Specify a negative limit for unlimited."),
12213 NULL
, NULL
, /* FIXME: i18n: The maximum
12214 number of target hardware
12215 breakpoints is %s. */
12216 &remote_set_cmdlist
, &remote_show_cmdlist
);
12218 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
12219 &remote_address_size
, _("\
12220 Set the maximum size of the address (in bits) in a memory packet."), _("\
12221 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
12223 NULL
, /* FIXME: i18n: */
12224 &setlist
, &showlist
);
12226 init_all_packet_configs ();
12228 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
12229 "X", "binary-download", 1);
12231 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
12232 "vCont", "verbose-resume", 0);
12234 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
12235 "QPassSignals", "pass-signals", 0);
12237 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
12238 "QProgramSignals", "program-signals", 0);
12240 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
12241 "qSymbol", "symbol-lookup", 0);
12243 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
12244 "P", "set-register", 1);
12246 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12247 "p", "fetch-register", 1);
12249 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12250 "Z0", "software-breakpoint", 0);
12252 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12253 "Z1", "hardware-breakpoint", 0);
12255 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12256 "Z2", "write-watchpoint", 0);
12258 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12259 "Z3", "read-watchpoint", 0);
12261 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12262 "Z4", "access-watchpoint", 0);
12264 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12265 "qXfer:auxv:read", "read-aux-vector", 0);
12267 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12268 "qXfer:features:read", "target-features", 0);
12270 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12271 "qXfer:libraries:read", "library-info", 0);
12273 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12274 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12276 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12277 "qXfer:memory-map:read", "memory-map", 0);
12279 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12280 "qXfer:spu:read", "read-spu-object", 0);
12282 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12283 "qXfer:spu:write", "write-spu-object", 0);
12285 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12286 "qXfer:osdata:read", "osdata", 0);
12288 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12289 "qXfer:threads:read", "threads", 0);
12291 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12292 "qXfer:siginfo:read", "read-siginfo-object", 0);
12294 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12295 "qXfer:siginfo:write", "write-siginfo-object", 0);
12297 add_packet_config_cmd
12298 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12299 "qXfer:traceframe-info:read", "traceframe-info", 0);
12301 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12302 "qXfer:uib:read", "unwind-info-block", 0);
12304 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12305 "qGetTLSAddr", "get-thread-local-storage-address",
12308 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12309 "qGetTIBAddr", "get-thread-information-block-address",
12312 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12313 "bc", "reverse-continue", 0);
12315 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12316 "bs", "reverse-step", 0);
12318 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12319 "qSupported", "supported-packets", 0);
12321 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12322 "qSearch:memory", "search-memory", 0);
12324 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12325 "qTStatus", "trace-status", 0);
12327 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12328 "vFile:open", "hostio-open", 0);
12330 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12331 "vFile:pread", "hostio-pread", 0);
12333 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12334 "vFile:pwrite", "hostio-pwrite", 0);
12336 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12337 "vFile:close", "hostio-close", 0);
12339 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12340 "vFile:unlink", "hostio-unlink", 0);
12342 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12343 "vFile:readlink", "hostio-readlink", 0);
12345 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12346 "vAttach", "attach", 0);
12348 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12351 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12352 "QStartNoAckMode", "noack", 0);
12354 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12355 "vKill", "kill", 0);
12357 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12358 "qAttached", "query-attached", 0);
12360 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12361 "ConditionalTracepoints",
12362 "conditional-tracepoints", 0);
12364 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12365 "ConditionalBreakpoints",
12366 "conditional-breakpoints", 0);
12368 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12369 "BreakpointCommands",
12370 "breakpoint-commands", 0);
12372 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12373 "FastTracepoints", "fast-tracepoints", 0);
12375 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12376 "TracepointSource", "TracepointSource", 0);
12378 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12379 "QAllow", "allow", 0);
12381 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12382 "StaticTracepoints", "static-tracepoints", 0);
12384 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12385 "InstallInTrace", "install-in-trace", 0);
12387 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12388 "qXfer:statictrace:read", "read-sdata-object", 0);
12390 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12391 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12393 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12394 "QDisableRandomization", "disable-randomization", 0);
12396 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12397 "QAgent", "agent", 0);
12399 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12400 "QTBuffer:size", "trace-buffer-size", 0);
12402 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12403 "Qbtrace:off", "disable-btrace", 0);
12405 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12406 "Qbtrace:bts", "enable-btrace", 0);
12408 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12409 "qXfer:btrace", "read-btrace", 0);
12411 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
12412 "qXfer:btrace-conf", "read-btrace-conf", 0);
12414 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
12415 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
12417 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
12418 "swbreak-feature", "swbreak-feature", 0);
12420 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
12421 "hwbreak-feature", "hwbreak-feature", 0);
12423 /* Assert that we've registered commands for all packet configs. */
12427 for (i
= 0; i
< PACKET_MAX
; i
++)
12429 /* Ideally all configs would have a command associated. Some
12430 still don't though. */
12435 case PACKET_QNonStop
:
12436 case PACKET_multiprocess_feature
:
12437 case PACKET_EnableDisableTracepoints_feature
:
12438 case PACKET_tracenz_feature
:
12439 case PACKET_DisconnectedTracing_feature
:
12440 case PACKET_augmented_libraries_svr4_read_feature
:
12442 /* Additions to this list need to be well justified:
12443 pre-existing packets are OK; new packets are not. */
12451 /* This catches both forgetting to add a config command, and
12452 forgetting to remove a packet from the exception list. */
12453 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
12457 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12458 Z sub-packet has its own set and show commands, but users may
12459 have sets to this variable in their .gdbinit files (or in their
12461 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12462 &remote_Z_packet_detect
, _("\
12463 Set use of remote protocol `Z' packets"), _("\
12464 Show use of remote protocol `Z' packets "), _("\
12465 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12467 set_remote_protocol_Z_packet_cmd
,
12468 show_remote_protocol_Z_packet_cmd
,
12469 /* FIXME: i18n: Use of remote protocol
12470 `Z' packets is %s. */
12471 &remote_set_cmdlist
, &remote_show_cmdlist
);
12473 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12474 Manipulate files on the remote system\n\
12475 Transfer files to and from the remote target system."),
12476 &remote_cmdlist
, "remote ",
12477 0 /* allow-unknown */, &cmdlist
);
12479 add_cmd ("put", class_files
, remote_put_command
,
12480 _("Copy a local file to the remote system."),
12483 add_cmd ("get", class_files
, remote_get_command
,
12484 _("Copy a remote file to the local system."),
12487 add_cmd ("delete", class_files
, remote_delete_command
,
12488 _("Delete a remote file."),
12491 remote_exec_file
= xstrdup ("");
12492 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12493 &remote_exec_file
, _("\
12494 Set the remote pathname for \"run\""), _("\
12495 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12496 &remote_set_cmdlist
, &remote_show_cmdlist
);
12498 add_setshow_boolean_cmd ("range-stepping", class_run
,
12499 &use_range_stepping
, _("\
12500 Enable or disable range stepping."), _("\
12501 Show whether target-assisted range stepping is enabled."), _("\
12502 If on, and the target supports it, when stepping a source line, GDB\n\
12503 tells the target to step the corresponding range of addresses itself instead\n\
12504 of issuing multiple single-steps. This speeds up source level\n\
12505 stepping. If off, GDB always issues single-steps, even if range\n\
12506 stepping is supported by the target. The default is on."),
12507 set_range_stepping
,
12508 show_range_stepping
,
12512 /* Eventually initialize fileio. See fileio.c */
12513 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12515 /* Take advantage of the fact that the TID field is not used, to tag
12516 special ptids with it set to != 0. */
12517 magic_null_ptid
= ptid_build (42000, -1, 1);
12518 not_sent_ptid
= ptid_build (42000, -2, 1);
12519 any_thread_ptid
= ptid_build (42000, 0, 1);
12521 target_buf_size
= 2048;
12522 target_buf
= xmalloc (target_buf_size
);