1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 #include "exceptions.h"
32 /*#include "terminal.h" */
35 #include "gdb-stabs.h"
36 #include "gdbthread.h"
38 #include "remote-notif.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
48 #include "filestuff.h"
53 #include "event-loop.h"
54 #include "event-top.h"
60 #include "gdbcore.h" /* for exec_bfd */
62 #include "remote-fileio.h"
63 #include "gdb/fileio.h"
65 #include "xml-support.h"
67 #include "memory-map.h"
69 #include "tracepoint.h"
75 /* Temp hacks for tracepoint encoding migration. */
76 static char *target_buf
;
77 static long target_buf_size
;
79 /* The size to align memory write packets, when practical. The protocol
80 does not guarantee any alignment, and gdb will generate short
81 writes and unaligned writes, but even as a best-effort attempt this
82 can improve bulk transfers. For instance, if a write is misaligned
83 relative to the target's data bus, the stub may need to make an extra
84 round trip fetching data from the target. This doesn't make a
85 huge difference, but it's easy to do, so we try to be helpful.
87 The alignment chosen is arbitrary; usually data bus width is
88 important here, not the possibly larger cache line size. */
89 enum { REMOTE_ALIGN_WRITES
= 16 };
91 /* Prototypes for local functions. */
92 static void async_cleanup_sigint_signal_handler (void *dummy
);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
95 int forever
, int *is_notif
);
97 static void async_handle_remote_sigint (int);
98 static void async_handle_remote_sigint_twice (int);
100 static void remote_files_info (struct target_ops
*ignore
);
102 static void remote_prepare_to_store (struct target_ops
*self
,
103 struct regcache
*regcache
);
105 static void remote_open (char *name
, int from_tty
);
107 static void extended_remote_open (char *name
, int from_tty
);
109 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
111 static void remote_close (struct target_ops
*self
);
113 static void remote_mourn (struct target_ops
*ops
);
115 static void extended_remote_restart (void);
117 static void extended_remote_mourn (struct target_ops
*);
119 static void remote_mourn_1 (struct target_ops
*);
121 static void remote_send (char **buf
, long *sizeof_buf_p
);
123 static int readchar (int timeout
);
125 static void remote_serial_write (const char *str
, int len
);
127 static void remote_kill (struct target_ops
*ops
);
129 static int remote_can_async_p (struct target_ops
*);
131 static int remote_is_async_p (struct target_ops
*);
133 static void remote_async (struct target_ops
*ops
,
134 void (*callback
) (enum inferior_event_type event_type
,
138 static void sync_remote_interrupt_twice (int signo
);
140 static void interrupt_query (void);
142 static void set_general_thread (struct ptid ptid
);
143 static void set_continue_thread (struct ptid ptid
);
145 static void get_offsets (void);
147 static void skip_frame (void);
149 static long read_frame (char **buf_p
, long *sizeof_buf
);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void remote_stop (struct target_ops
*self
, ptid_t
);
159 static int stubhex (int ch
);
161 static int hexnumstr (char *, ULONGEST
);
163 static int hexnumnstr (char *, ULONGEST
, int);
165 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
167 static void print_packet (char *);
169 static void compare_sections_command (char *, int);
171 static void packet_command (char *, int);
173 static int stub_unpack_int (char *buff
, int fieldlength
);
175 static ptid_t
remote_current_thread (ptid_t oldptid
);
177 static void remote_find_new_threads (void);
179 static int putpkt_binary (char *buf
, int cnt
);
181 static void check_binary_download (CORE_ADDR addr
);
183 struct packet_config
;
185 static void show_packet_config_cmd (struct packet_config
*config
);
187 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
189 struct cmd_list_element
*c
,
192 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
193 static ptid_t
read_ptid (char *buf
, char **obuf
);
195 static void remote_set_permissions (struct target_ops
*self
);
198 static int remote_get_trace_status (struct target_ops
*self
,
199 struct trace_status
*ts
);
201 static int remote_upload_tracepoints (struct target_ops
*self
,
202 struct uploaded_tp
**utpp
);
204 static int remote_upload_trace_state_variables (struct target_ops
*self
,
205 struct uploaded_tsv
**utsvp
);
207 static void remote_query_supported (void);
209 static void remote_check_symbols (void);
211 void _initialize_remote (void);
214 static void stop_reply_xfree (struct stop_reply
*);
215 static void remote_parse_stop_reply (char *, struct stop_reply
*);
216 static void push_stop_reply (struct stop_reply
*);
217 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
218 static int peek_stop_reply (ptid_t ptid
);
220 static void remote_async_inferior_event_handler (gdb_client_data
);
222 static void remote_terminal_ours (struct target_ops
*self
);
224 static int remote_read_description_p (struct target_ops
*target
);
226 static void remote_console_output (char *msg
);
228 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
230 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
234 static struct cmd_list_element
*remote_cmdlist
;
236 /* For "set remote" and "show remote". */
238 static struct cmd_list_element
*remote_set_cmdlist
;
239 static struct cmd_list_element
*remote_show_cmdlist
;
241 /* Stub vCont actions support.
243 Each field is a boolean flag indicating whether the stub reports
244 support for the corresponding action. */
246 struct vCont_action_support
255 /* Controls whether GDB is willing to use range stepping. */
257 static int use_range_stepping
= 1;
259 #define OPAQUETHREADBYTES 8
261 /* a 64 bit opaque identifier */
262 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
264 /* About this many threadisds fit in a packet. */
266 #define MAXTHREADLISTRESULTS 32
268 /* Description of the remote protocol state for the currently
269 connected target. This is per-target state, and independent of the
270 selected architecture. */
274 /* A buffer to use for incoming packets, and its current size. The
275 buffer is grown dynamically for larger incoming packets.
276 Outgoing packets may also be constructed in this buffer.
277 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
278 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
283 /* True if we're going through initial connection setup (finding out
284 about the remote side's threads, relocating symbols, etc.). */
287 /* If we negotiated packet size explicitly (and thus can bypass
288 heuristics for the largest packet size that will not overflow
289 a buffer in the stub), this will be set to that packet size.
290 Otherwise zero, meaning to use the guessed size. */
291 long explicit_packet_size
;
293 /* remote_wait is normally called when the target is running and
294 waits for a stop reply packet. But sometimes we need to call it
295 when the target is already stopped. We can send a "?" packet
296 and have remote_wait read the response. Or, if we already have
297 the response, we can stash it in BUF and tell remote_wait to
298 skip calling getpkt. This flag is set when BUF contains a
299 stop reply packet and the target is not waiting. */
300 int cached_wait_status
;
302 /* True, if in no ack mode. That is, neither GDB nor the stub will
303 expect acks from each other. The connection is assumed to be
307 /* True if we're connected in extended remote mode. */
310 /* True if we resumed the target and we're waiting for the target to
311 stop. In the mean time, we can't start another command/query.
312 The remote server wouldn't be ready to process it, so we'd
313 timeout waiting for a reply that would never come and eventually
314 we'd close the connection. This can happen in asynchronous mode
315 because we allow GDB commands while the target is running. */
316 int waiting_for_stop_reply
;
318 /* The status of the stub support for the various vCont actions. */
319 struct vCont_action_support supports_vCont
;
321 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
322 responded to that. */
325 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
326 remote_open knows that we don't have a file open when the program
328 struct serial
*remote_desc
;
330 /* These are the threads which we last sent to the remote system. The
331 TID member will be -1 for all or -2 for not sent yet. */
332 ptid_t general_thread
;
333 ptid_t continue_thread
;
335 /* This is the traceframe which we last selected on the remote system.
336 It will be -1 if no traceframe is selected. */
337 int remote_traceframe_number
;
339 char *last_pass_packet
;
341 /* The last QProgramSignals packet sent to the target. We bypass
342 sending a new program signals list down to the target if the new
343 packet is exactly the same as the last we sent. IOW, we only let
344 the target know about program signals list changes. */
345 char *last_program_signals_packet
;
347 enum gdb_signal last_sent_signal
;
351 char *finished_object
;
352 char *finished_annex
;
353 ULONGEST finished_offset
;
355 /* Should we try the 'ThreadInfo' query packet?
357 This variable (NOT available to the user: auto-detect only!)
358 determines whether GDB will use the new, simpler "ThreadInfo"
359 query or the older, more complex syntax for thread queries.
360 This is an auto-detect variable (set to true at each connect,
361 and set to false when the target fails to recognize it). */
362 int use_threadinfo_query
;
363 int use_threadextra_query
;
365 void (*async_client_callback
) (enum inferior_event_type event_type
,
367 void *async_client_context
;
369 /* This is set to the data address of the access causing the target
370 to stop for a watchpoint. */
371 CORE_ADDR remote_watch_data_address
;
373 /* This is non-zero if target stopped for a watchpoint. */
374 int remote_stopped_by_watchpoint_p
;
376 threadref echo_nextthread
;
377 threadref nextthread
;
378 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
380 /* The state of remote notification. */
381 struct remote_notif_state
*notif_state
;
384 /* Private data that we'll store in (struct thread_info)->private. */
385 struct private_thread_info
392 free_private_thread_info (struct private_thread_info
*info
)
398 /* This data could be associated with a target, but we do not always
399 have access to the current target when we need it, so for now it is
400 static. This will be fine for as long as only one target is in use
402 static struct remote_state
*remote_state
;
404 static struct remote_state
*
405 get_remote_state_raw (void)
410 /* Allocate a new struct remote_state with xmalloc, initialize it, and
413 static struct remote_state
*
414 new_remote_state (void)
416 struct remote_state
*result
= XCNEW (struct remote_state
);
418 /* The default buffer size is unimportant; it will be expanded
419 whenever a larger buffer is needed. */
420 result
->buf_size
= 400;
421 result
->buf
= xmalloc (result
->buf_size
);
422 result
->remote_traceframe_number
= -1;
423 result
->last_sent_signal
= GDB_SIGNAL_0
;
428 /* Description of the remote protocol for a given architecture. */
432 long offset
; /* Offset into G packet. */
433 long regnum
; /* GDB's internal register number. */
434 LONGEST pnum
; /* Remote protocol register number. */
435 int in_g_packet
; /* Always part of G packet. */
436 /* long size in bytes; == register_size (target_gdbarch (), regnum);
438 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
442 struct remote_arch_state
444 /* Description of the remote protocol registers. */
445 long sizeof_g_packet
;
447 /* Description of the remote protocol registers indexed by REGNUM
448 (making an array gdbarch_num_regs in size). */
449 struct packet_reg
*regs
;
451 /* This is the size (in chars) of the first response to the ``g''
452 packet. It is used as a heuristic when determining the maximum
453 size of memory-read and memory-write packets. A target will
454 typically only reserve a buffer large enough to hold the ``g''
455 packet. The size does not include packet overhead (headers and
457 long actual_register_packet_size
;
459 /* This is the maximum size (in chars) of a non read/write packet.
460 It is also used as a cap on the size of read/write packets. */
461 long remote_packet_size
;
464 /* Utility: generate error from an incoming stub packet. */
466 trace_error (char *buf
)
469 return; /* not an error msg */
472 case '1': /* malformed packet error */
473 if (*++buf
== '0') /* general case: */
474 error (_("remote.c: error in outgoing packet."));
476 error (_("remote.c: error in outgoing packet at field #%ld."),
477 strtol (buf
, NULL
, 16));
479 error (_("Target returns error code '%s'."), buf
);
483 /* Utility: wait for reply from stub, while accepting "O" packets. */
485 remote_get_noisy_reply (char **buf_p
,
488 do /* Loop on reply from remote stub. */
492 QUIT
; /* Allow user to bail out with ^C. */
493 getpkt (buf_p
, sizeof_buf
, 0);
497 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
500 CORE_ADDR from
, to
, org_to
;
502 int adjusted_size
= 0;
503 volatile struct gdb_exception ex
;
505 p
= buf
+ strlen ("qRelocInsn:");
506 pp
= unpack_varlen_hex (p
, &ul
);
508 error (_("invalid qRelocInsn packet: %s"), buf
);
512 unpack_varlen_hex (p
, &ul
);
517 TRY_CATCH (ex
, RETURN_MASK_ALL
)
519 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
523 adjusted_size
= to
- org_to
;
525 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
528 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
530 /* Propagate memory errors silently back to the target.
531 The stub may have limited the range of addresses we
532 can write to, for example. */
537 /* Something unexpectedly bad happened. Be verbose so
538 we can tell what, and propagate the error back to the
539 stub, so it doesn't get stuck waiting for a
541 exception_fprintf (gdb_stderr
, ex
,
542 _("warning: relocating instruction: "));
546 else if (buf
[0] == 'O' && buf
[1] != 'K')
547 remote_console_output (buf
+ 1); /* 'O' message from stub */
549 return buf
; /* Here's the actual reply. */
554 /* Handle for retreving the remote protocol data from gdbarch. */
555 static struct gdbarch_data
*remote_gdbarch_data_handle
;
557 static struct remote_arch_state
*
558 get_remote_arch_state (void)
560 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
563 /* Fetch the global remote target state. */
565 static struct remote_state
*
566 get_remote_state (void)
568 /* Make sure that the remote architecture state has been
569 initialized, because doing so might reallocate rs->buf. Any
570 function which calls getpkt also needs to be mindful of changes
571 to rs->buf, but this call limits the number of places which run
573 get_remote_arch_state ();
575 return get_remote_state_raw ();
579 compare_pnums (const void *lhs_
, const void *rhs_
)
581 const struct packet_reg
* const *lhs
= lhs_
;
582 const struct packet_reg
* const *rhs
= rhs_
;
584 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
586 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
593 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
595 int regnum
, num_remote_regs
, offset
;
596 struct packet_reg
**remote_regs
;
598 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
600 struct packet_reg
*r
= ®s
[regnum
];
602 if (register_size (gdbarch
, regnum
) == 0)
603 /* Do not try to fetch zero-sized (placeholder) registers. */
606 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
611 /* Define the g/G packet format as the contents of each register
612 with a remote protocol number, in order of ascending protocol
615 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
616 * sizeof (struct packet_reg
*));
617 for (num_remote_regs
= 0, regnum
= 0;
618 regnum
< gdbarch_num_regs (gdbarch
);
620 if (regs
[regnum
].pnum
!= -1)
621 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
623 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
626 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
628 remote_regs
[regnum
]->in_g_packet
= 1;
629 remote_regs
[regnum
]->offset
= offset
;
630 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
636 /* Given the architecture described by GDBARCH, return the remote
637 protocol register's number and the register's offset in the g/G
638 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
639 If the target does not have a mapping for REGNUM, return false,
640 otherwise, return true. */
643 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
644 int *pnum
, int *poffset
)
647 struct packet_reg
*regs
;
648 struct cleanup
*old_chain
;
650 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
652 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
653 old_chain
= make_cleanup (xfree
, regs
);
655 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
657 *pnum
= regs
[regnum
].pnum
;
658 *poffset
= regs
[regnum
].offset
;
660 do_cleanups (old_chain
);
666 init_remote_state (struct gdbarch
*gdbarch
)
668 struct remote_state
*rs
= get_remote_state_raw ();
669 struct remote_arch_state
*rsa
;
671 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
673 /* Use the architecture to build a regnum<->pnum table, which will be
674 1:1 unless a feature set specifies otherwise. */
675 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
676 gdbarch_num_regs (gdbarch
),
679 /* Record the maximum possible size of the g packet - it may turn out
681 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
683 /* Default maximum number of characters in a packet body. Many
684 remote stubs have a hardwired buffer size of 400 bytes
685 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
686 as the maximum packet-size to ensure that the packet and an extra
687 NUL character can always fit in the buffer. This stops GDB
688 trashing stubs that try to squeeze an extra NUL into what is
689 already a full buffer (As of 1999-12-04 that was most stubs). */
690 rsa
->remote_packet_size
= 400 - 1;
692 /* This one is filled in when a ``g'' packet is received. */
693 rsa
->actual_register_packet_size
= 0;
695 /* Should rsa->sizeof_g_packet needs more space than the
696 default, adjust the size accordingly. Remember that each byte is
697 encoded as two characters. 32 is the overhead for the packet
698 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
699 (``$NN:G...#NN'') is a better guess, the below has been padded a
701 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
702 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
704 /* Make sure that the packet buffer is plenty big enough for
705 this architecture. */
706 if (rs
->buf_size
< rsa
->remote_packet_size
)
708 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
709 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
715 /* Return the current allowed size of a remote packet. This is
716 inferred from the current architecture, and should be used to
717 limit the length of outgoing packets. */
719 get_remote_packet_size (void)
721 struct remote_state
*rs
= get_remote_state ();
722 struct remote_arch_state
*rsa
= get_remote_arch_state ();
724 if (rs
->explicit_packet_size
)
725 return rs
->explicit_packet_size
;
727 return rsa
->remote_packet_size
;
730 static struct packet_reg
*
731 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
733 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
737 struct packet_reg
*r
= &rsa
->regs
[regnum
];
739 gdb_assert (r
->regnum
== regnum
);
744 static struct packet_reg
*
745 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
749 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
751 struct packet_reg
*r
= &rsa
->regs
[i
];
759 static struct target_ops remote_ops
;
761 static struct target_ops extended_remote_ops
;
763 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
764 ``forever'' still use the normal timeout mechanism. This is
765 currently used by the ASYNC code to guarentee that target reads
766 during the initial connect always time-out. Once getpkt has been
767 modified to return a timeout indication and, in turn
768 remote_wait()/wait_for_inferior() have gained a timeout parameter
770 static int wait_forever_enabled_p
= 1;
772 /* Allow the user to specify what sequence to send to the remote
773 when he requests a program interruption: Although ^C is usually
774 what remote systems expect (this is the default, here), it is
775 sometimes preferable to send a break. On other systems such
776 as the Linux kernel, a break followed by g, which is Magic SysRq g
777 is required in order to interrupt the execution. */
778 const char interrupt_sequence_control_c
[] = "Ctrl-C";
779 const char interrupt_sequence_break
[] = "BREAK";
780 const char interrupt_sequence_break_g
[] = "BREAK-g";
781 static const char *const interrupt_sequence_modes
[] =
783 interrupt_sequence_control_c
,
784 interrupt_sequence_break
,
785 interrupt_sequence_break_g
,
788 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
791 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
792 struct cmd_list_element
*c
,
795 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
796 fprintf_filtered (file
,
797 _("Send the ASCII ETX character (Ctrl-c) "
798 "to the remote target to interrupt the "
799 "execution of the program.\n"));
800 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
801 fprintf_filtered (file
,
802 _("send a break signal to the remote target "
803 "to interrupt the execution of the program.\n"));
804 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
805 fprintf_filtered (file
,
806 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
807 "the remote target to interrupt the execution "
808 "of Linux kernel.\n"));
810 internal_error (__FILE__
, __LINE__
,
811 _("Invalid value for interrupt_sequence_mode: %s."),
812 interrupt_sequence_mode
);
815 /* This boolean variable specifies whether interrupt_sequence is sent
816 to the remote target when gdb connects to it.
817 This is mostly needed when you debug the Linux kernel: The Linux kernel
818 expects BREAK g which is Magic SysRq g for connecting gdb. */
819 static int interrupt_on_connect
= 0;
821 /* This variable is used to implement the "set/show remotebreak" commands.
822 Since these commands are now deprecated in favor of "set/show remote
823 interrupt-sequence", it no longer has any effect on the code. */
824 static int remote_break
;
827 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
830 interrupt_sequence_mode
= interrupt_sequence_break
;
832 interrupt_sequence_mode
= interrupt_sequence_control_c
;
836 show_remotebreak (struct ui_file
*file
, int from_tty
,
837 struct cmd_list_element
*c
,
842 /* This variable sets the number of bits in an address that are to be
843 sent in a memory ("M" or "m") packet. Normally, after stripping
844 leading zeros, the entire address would be sent. This variable
845 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
846 initial implementation of remote.c restricted the address sent in
847 memory packets to ``host::sizeof long'' bytes - (typically 32
848 bits). Consequently, for 64 bit targets, the upper 32 bits of an
849 address was never sent. Since fixing this bug may cause a break in
850 some remote targets this variable is principly provided to
851 facilitate backward compatibility. */
853 static unsigned int remote_address_size
;
855 /* Temporary to track who currently owns the terminal. See
856 remote_terminal_* for more details. */
858 static int remote_async_terminal_ours_p
;
860 /* The executable file to use for "run" on the remote side. */
862 static char *remote_exec_file
= "";
865 /* User configurable variables for the number of characters in a
866 memory read/write packet. MIN (rsa->remote_packet_size,
867 rsa->sizeof_g_packet) is the default. Some targets need smaller
868 values (fifo overruns, et.al.) and some users need larger values
869 (speed up transfers). The variables ``preferred_*'' (the user
870 request), ``current_*'' (what was actually set) and ``forced_*''
871 (Positive - a soft limit, negative - a hard limit). */
873 struct memory_packet_config
880 /* Compute the current size of a read/write packet. Since this makes
881 use of ``actual_register_packet_size'' the computation is dynamic. */
884 get_memory_packet_size (struct memory_packet_config
*config
)
886 struct remote_state
*rs
= get_remote_state ();
887 struct remote_arch_state
*rsa
= get_remote_arch_state ();
889 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
890 law?) that some hosts don't cope very well with large alloca()
891 calls. Eventually the alloca() code will be replaced by calls to
892 xmalloc() and make_cleanups() allowing this restriction to either
893 be lifted or removed. */
894 #ifndef MAX_REMOTE_PACKET_SIZE
895 #define MAX_REMOTE_PACKET_SIZE 16384
897 /* NOTE: 20 ensures we can write at least one byte. */
898 #ifndef MIN_REMOTE_PACKET_SIZE
899 #define MIN_REMOTE_PACKET_SIZE 20
904 if (config
->size
<= 0)
905 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
907 what_they_get
= config
->size
;
911 what_they_get
= get_remote_packet_size ();
912 /* Limit the packet to the size specified by the user. */
914 && what_they_get
> config
->size
)
915 what_they_get
= config
->size
;
917 /* Limit it to the size of the targets ``g'' response unless we have
918 permission from the stub to use a larger packet size. */
919 if (rs
->explicit_packet_size
== 0
920 && rsa
->actual_register_packet_size
> 0
921 && what_they_get
> rsa
->actual_register_packet_size
)
922 what_they_get
= rsa
->actual_register_packet_size
;
924 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
925 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
926 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
927 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
929 /* Make sure there is room in the global buffer for this packet
930 (including its trailing NUL byte). */
931 if (rs
->buf_size
< what_they_get
+ 1)
933 rs
->buf_size
= 2 * what_they_get
;
934 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
937 return what_they_get
;
940 /* Update the size of a read/write packet. If they user wants
941 something really big then do a sanity check. */
944 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
946 int fixed_p
= config
->fixed_p
;
947 long size
= config
->size
;
950 error (_("Argument required (integer, `fixed' or `limited')."));
951 else if (strcmp (args
, "hard") == 0
952 || strcmp (args
, "fixed") == 0)
954 else if (strcmp (args
, "soft") == 0
955 || strcmp (args
, "limit") == 0)
961 size
= strtoul (args
, &end
, 0);
963 error (_("Invalid %s (bad syntax)."), config
->name
);
965 /* Instead of explicitly capping the size of a packet to
966 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
967 instead allowed to set the size to something arbitrarily
969 if (size
> MAX_REMOTE_PACKET_SIZE
)
970 error (_("Invalid %s (too large)."), config
->name
);
974 if (fixed_p
&& !config
->fixed_p
)
976 if (! query (_("The target may not be able to correctly handle a %s\n"
977 "of %ld bytes. Change the packet size? "),
979 error (_("Packet size not changed."));
981 /* Update the config. */
982 config
->fixed_p
= fixed_p
;
987 show_memory_packet_size (struct memory_packet_config
*config
)
989 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
991 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
992 get_memory_packet_size (config
));
994 printf_filtered (_("Packets are limited to %ld bytes.\n"),
995 get_memory_packet_size (config
));
998 static struct memory_packet_config memory_write_packet_config
=
1000 "memory-write-packet-size",
1004 set_memory_write_packet_size (char *args
, int from_tty
)
1006 set_memory_packet_size (args
, &memory_write_packet_config
);
1010 show_memory_write_packet_size (char *args
, int from_tty
)
1012 show_memory_packet_size (&memory_write_packet_config
);
1016 get_memory_write_packet_size (void)
1018 return get_memory_packet_size (&memory_write_packet_config
);
1021 static struct memory_packet_config memory_read_packet_config
=
1023 "memory-read-packet-size",
1027 set_memory_read_packet_size (char *args
, int from_tty
)
1029 set_memory_packet_size (args
, &memory_read_packet_config
);
1033 show_memory_read_packet_size (char *args
, int from_tty
)
1035 show_memory_packet_size (&memory_read_packet_config
);
1039 get_memory_read_packet_size (void)
1041 long size
= get_memory_packet_size (&memory_read_packet_config
);
1043 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1044 extra buffer size argument before the memory read size can be
1045 increased beyond this. */
1046 if (size
> get_remote_packet_size ())
1047 size
= get_remote_packet_size ();
1052 /* Generic configuration support for packets the stub optionally
1053 supports. Allows the user to specify the use of the packet as well
1054 as allowing GDB to auto-detect support in the remote stub. */
1058 PACKET_SUPPORT_UNKNOWN
= 0,
1063 struct packet_config
1068 /* If auto, GDB auto-detects support for this packet or feature,
1069 either through qSupported, or by trying the packet and looking
1070 at the response. If true, GDB assumes the target supports this
1071 packet. If false, the packet is disabled. Configs that don't
1072 have an associated command always have this set to auto. */
1073 enum auto_boolean detect
;
1075 /* Does the target support this packet? */
1076 enum packet_support support
;
1079 /* Analyze a packet's return value and update the packet config
1089 static enum packet_support
packet_config_support (struct packet_config
*config
);
1090 static enum packet_support
packet_support (int packet
);
1093 show_packet_config_cmd (struct packet_config
*config
)
1095 char *support
= "internal-error";
1097 switch (packet_config_support (config
))
1100 support
= "enabled";
1102 case PACKET_DISABLE
:
1103 support
= "disabled";
1105 case PACKET_SUPPORT_UNKNOWN
:
1106 support
= "unknown";
1109 switch (config
->detect
)
1111 case AUTO_BOOLEAN_AUTO
:
1112 printf_filtered (_("Support for the `%s' packet "
1113 "is auto-detected, currently %s.\n"),
1114 config
->name
, support
);
1116 case AUTO_BOOLEAN_TRUE
:
1117 case AUTO_BOOLEAN_FALSE
:
1118 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1119 config
->name
, support
);
1125 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1126 const char *title
, int legacy
)
1132 config
->name
= name
;
1133 config
->title
= title
;
1134 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1136 show_doc
= xstrprintf ("Show current use of remote "
1137 "protocol `%s' (%s) packet",
1139 /* set/show TITLE-packet {auto,on,off} */
1140 cmd_name
= xstrprintf ("%s-packet", title
);
1141 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1142 &config
->detect
, set_doc
,
1143 show_doc
, NULL
, /* help_doc */
1145 show_remote_protocol_packet_cmd
,
1146 &remote_set_cmdlist
, &remote_show_cmdlist
);
1147 /* The command code copies the documentation strings. */
1150 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1155 legacy_name
= xstrprintf ("%s-packet", name
);
1156 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1157 &remote_set_cmdlist
);
1158 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1159 &remote_show_cmdlist
);
1163 static enum packet_result
1164 packet_check_result (const char *buf
)
1168 /* The stub recognized the packet request. Check that the
1169 operation succeeded. */
1171 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1173 /* "Enn" - definitly an error. */
1174 return PACKET_ERROR
;
1176 /* Always treat "E." as an error. This will be used for
1177 more verbose error messages, such as E.memtypes. */
1178 if (buf
[0] == 'E' && buf
[1] == '.')
1179 return PACKET_ERROR
;
1181 /* The packet may or may not be OK. Just assume it is. */
1185 /* The stub does not support the packet. */
1186 return PACKET_UNKNOWN
;
1189 static enum packet_result
1190 packet_ok (const char *buf
, struct packet_config
*config
)
1192 enum packet_result result
;
1194 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1195 && config
->support
== PACKET_DISABLE
)
1196 internal_error (__FILE__
, __LINE__
,
1197 _("packet_ok: attempt to use a disabled packet"));
1199 result
= packet_check_result (buf
);
1204 /* The stub recognized the packet request. */
1205 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1208 fprintf_unfiltered (gdb_stdlog
,
1209 "Packet %s (%s) is supported\n",
1210 config
->name
, config
->title
);
1211 config
->support
= PACKET_ENABLE
;
1214 case PACKET_UNKNOWN
:
1215 /* The stub does not support the packet. */
1216 if (config
->detect
== AUTO_BOOLEAN_AUTO
1217 && config
->support
== PACKET_ENABLE
)
1219 /* If the stub previously indicated that the packet was
1220 supported then there is a protocol error. */
1221 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1222 config
->name
, config
->title
);
1224 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1226 /* The user set it wrong. */
1227 error (_("Enabled packet %s (%s) not recognized by stub"),
1228 config
->name
, config
->title
);
1232 fprintf_unfiltered (gdb_stdlog
,
1233 "Packet %s (%s) is NOT supported\n",
1234 config
->name
, config
->title
);
1235 config
->support
= PACKET_DISABLE
;
1255 PACKET_vFile_pwrite
,
1257 PACKET_vFile_unlink
,
1258 PACKET_vFile_readlink
,
1260 PACKET_qXfer_features
,
1261 PACKET_qXfer_libraries
,
1262 PACKET_qXfer_libraries_svr4
,
1263 PACKET_qXfer_memory_map
,
1264 PACKET_qXfer_spu_read
,
1265 PACKET_qXfer_spu_write
,
1266 PACKET_qXfer_osdata
,
1267 PACKET_qXfer_threads
,
1268 PACKET_qXfer_statictrace_read
,
1269 PACKET_qXfer_traceframe_info
,
1275 PACKET_QPassSignals
,
1276 PACKET_QProgramSignals
,
1278 PACKET_qSearch_memory
,
1281 PACKET_QStartNoAckMode
,
1283 PACKET_qXfer_siginfo_read
,
1284 PACKET_qXfer_siginfo_write
,
1287 /* Support for conditional tracepoints. */
1288 PACKET_ConditionalTracepoints
,
1290 /* Support for target-side breakpoint conditions. */
1291 PACKET_ConditionalBreakpoints
,
1293 /* Support for target-side breakpoint commands. */
1294 PACKET_BreakpointCommands
,
1296 /* Support for fast tracepoints. */
1297 PACKET_FastTracepoints
,
1299 /* Support for static tracepoints. */
1300 PACKET_StaticTracepoints
,
1302 /* Support for installing tracepoints while a trace experiment is
1304 PACKET_InstallInTrace
,
1308 PACKET_TracepointSource
,
1311 PACKET_QDisableRandomization
,
1313 PACKET_QTBuffer_size
,
1316 PACKET_qXfer_btrace
,
1318 /* Support for the QNonStop packet. */
1321 /* Support for multi-process extensions. */
1322 PACKET_multiprocess_feature
,
1324 /* Support for enabling and disabling tracepoints while a trace
1325 experiment is running. */
1326 PACKET_EnableDisableTracepoints_feature
,
1328 /* Support for collecting strings using the tracenz bytecode. */
1329 PACKET_tracenz_feature
,
1331 /* Support for continuing to run a trace experiment while GDB is
1333 PACKET_DisconnectedTracing_feature
,
1335 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1336 PACKET_augmented_libraries_svr4_read_feature
,
1341 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1343 /* Returns whether a given packet or feature is supported. This takes
1344 into account the state of the corresponding "set remote foo-packet"
1345 command, which may be used to bypass auto-detection. */
1347 static enum packet_support
1348 packet_config_support (struct packet_config
*config
)
1350 switch (config
->detect
)
1352 case AUTO_BOOLEAN_TRUE
:
1353 return PACKET_ENABLE
;
1354 case AUTO_BOOLEAN_FALSE
:
1355 return PACKET_DISABLE
;
1356 case AUTO_BOOLEAN_AUTO
:
1357 return config
->support
;
1359 gdb_assert_not_reached (_("bad switch"));
1363 /* Same as packet_config_support, but takes the packet's enum value as
1366 static enum packet_support
1367 packet_support (int packet
)
1369 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1371 return packet_config_support (config
);
1375 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1376 struct cmd_list_element
*c
,
1379 struct packet_config
*packet
;
1381 for (packet
= remote_protocol_packets
;
1382 packet
< &remote_protocol_packets
[PACKET_MAX
];
1385 if (&packet
->detect
== c
->var
)
1387 show_packet_config_cmd (packet
);
1391 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1395 /* Should we try one of the 'Z' requests? */
1399 Z_PACKET_SOFTWARE_BP
,
1400 Z_PACKET_HARDWARE_BP
,
1407 /* For compatibility with older distributions. Provide a ``set remote
1408 Z-packet ...'' command that updates all the Z packet types. */
1410 static enum auto_boolean remote_Z_packet_detect
;
1413 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1414 struct cmd_list_element
*c
)
1418 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1419 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1423 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1424 struct cmd_list_element
*c
,
1429 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1431 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1435 /* Returns true if the multi-process extensions are in effect. */
1438 remote_multi_process_p (struct remote_state
*rs
)
1440 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1443 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1444 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1445 static struct async_signal_handler
*async_sigint_remote_token
;
1448 /* Asynchronous signal handle registered as event loop source for
1449 when we have pending events ready to be passed to the core. */
1451 static struct async_event_handler
*remote_async_inferior_event_token
;
1455 static ptid_t magic_null_ptid
;
1456 static ptid_t not_sent_ptid
;
1457 static ptid_t any_thread_ptid
;
1459 /* Find out if the stub attached to PID (and hence GDB should offer to
1460 detach instead of killing it when bailing out). */
1463 remote_query_attached (int pid
)
1465 struct remote_state
*rs
= get_remote_state ();
1466 size_t size
= get_remote_packet_size ();
1468 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1471 if (remote_multi_process_p (rs
))
1472 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1474 xsnprintf (rs
->buf
, size
, "qAttached");
1477 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1479 switch (packet_ok (rs
->buf
,
1480 &remote_protocol_packets
[PACKET_qAttached
]))
1483 if (strcmp (rs
->buf
, "1") == 0)
1487 warning (_("Remote failure reply: %s"), rs
->buf
);
1489 case PACKET_UNKNOWN
:
1496 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1497 has been invented by GDB, instead of reported by the target. Since
1498 we can be connected to a remote system before before knowing about
1499 any inferior, mark the target with execution when we find the first
1500 inferior. If ATTACHED is 1, then we had just attached to this
1501 inferior. If it is 0, then we just created this inferior. If it
1502 is -1, then try querying the remote stub to find out if it had
1503 attached to the inferior or not. */
1505 static struct inferior
*
1506 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1508 struct inferior
*inf
;
1510 /* Check whether this process we're learning about is to be
1511 considered attached, or if is to be considered to have been
1512 spawned by the stub. */
1514 attached
= remote_query_attached (pid
);
1516 if (gdbarch_has_global_solist (target_gdbarch ()))
1518 /* If the target shares code across all inferiors, then every
1519 attach adds a new inferior. */
1520 inf
= add_inferior (pid
);
1522 /* ... and every inferior is bound to the same program space.
1523 However, each inferior may still have its own address
1525 inf
->aspace
= maybe_new_address_space ();
1526 inf
->pspace
= current_program_space
;
1530 /* In the traditional debugging scenario, there's a 1-1 match
1531 between program/address spaces. We simply bind the inferior
1532 to the program space's address space. */
1533 inf
= current_inferior ();
1534 inferior_appeared (inf
, pid
);
1537 inf
->attach_flag
= attached
;
1538 inf
->fake_pid_p
= fake_pid_p
;
1543 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1544 according to RUNNING. */
1547 remote_add_thread (ptid_t ptid
, int running
)
1549 struct remote_state
*rs
= get_remote_state ();
1551 /* GDB historically didn't pull threads in the initial connection
1552 setup. If the remote target doesn't even have a concept of
1553 threads (e.g., a bare-metal target), even if internally we
1554 consider that a single-threaded target, mentioning a new thread
1555 might be confusing to the user. Be silent then, preserving the
1556 age old behavior. */
1557 if (rs
->starting_up
)
1558 add_thread_silent (ptid
);
1562 set_executing (ptid
, running
);
1563 set_running (ptid
, running
);
1566 /* Come here when we learn about a thread id from the remote target.
1567 It may be the first time we hear about such thread, so take the
1568 opportunity to add it to GDB's thread list. In case this is the
1569 first time we're noticing its corresponding inferior, add it to
1570 GDB's inferior list as well. */
1573 remote_notice_new_inferior (ptid_t currthread
, int running
)
1575 /* If this is a new thread, add it to GDB's thread list.
1576 If we leave it up to WFI to do this, bad things will happen. */
1578 if (in_thread_list (currthread
) && is_exited (currthread
))
1580 /* We're seeing an event on a thread id we knew had exited.
1581 This has to be a new thread reusing the old id. Add it. */
1582 remote_add_thread (currthread
, running
);
1586 if (!in_thread_list (currthread
))
1588 struct inferior
*inf
= NULL
;
1589 int pid
= ptid_get_pid (currthread
);
1591 if (ptid_is_pid (inferior_ptid
)
1592 && pid
== ptid_get_pid (inferior_ptid
))
1594 /* inferior_ptid has no thread member yet. This can happen
1595 with the vAttach -> remote_wait,"TAAthread:" path if the
1596 stub doesn't support qC. This is the first stop reported
1597 after an attach, so this is the main thread. Update the
1598 ptid in the thread list. */
1599 if (in_thread_list (pid_to_ptid (pid
)))
1600 thread_change_ptid (inferior_ptid
, currthread
);
1603 remote_add_thread (currthread
, running
);
1604 inferior_ptid
= currthread
;
1609 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1611 /* inferior_ptid is not set yet. This can happen with the
1612 vRun -> remote_wait,"TAAthread:" path if the stub
1613 doesn't support qC. This is the first stop reported
1614 after an attach, so this is the main thread. Update the
1615 ptid in the thread list. */
1616 thread_change_ptid (inferior_ptid
, currthread
);
1620 /* When connecting to a target remote, or to a target
1621 extended-remote which already was debugging an inferior, we
1622 may not know about it yet. Add it before adding its child
1623 thread, so notifications are emitted in a sensible order. */
1624 if (!in_inferior_list (ptid_get_pid (currthread
)))
1626 struct remote_state
*rs
= get_remote_state ();
1627 int fake_pid_p
= !remote_multi_process_p (rs
);
1629 inf
= remote_add_inferior (fake_pid_p
,
1630 ptid_get_pid (currthread
), -1);
1633 /* This is really a new thread. Add it. */
1634 remote_add_thread (currthread
, running
);
1636 /* If we found a new inferior, let the common code do whatever
1637 it needs to with it (e.g., read shared libraries, insert
1638 breakpoints), unless we're just setting up an all-stop
1642 struct remote_state
*rs
= get_remote_state ();
1644 if (non_stop
|| !rs
->starting_up
)
1645 notice_new_inferior (currthread
, running
, 0);
1650 /* Return the private thread data, creating it if necessary. */
1652 static struct private_thread_info
*
1653 demand_private_info (ptid_t ptid
)
1655 struct thread_info
*info
= find_thread_ptid (ptid
);
1661 info
->private = xmalloc (sizeof (*(info
->private)));
1662 info
->private_dtor
= free_private_thread_info
;
1663 info
->private->core
= -1;
1664 info
->private->extra
= 0;
1667 return info
->private;
1670 /* Call this function as a result of
1671 1) A halt indication (T packet) containing a thread id
1672 2) A direct query of currthread
1673 3) Successful execution of set thread */
1676 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1678 rs
->general_thread
= currthread
;
1681 /* If 'QPassSignals' is supported, tell the remote stub what signals
1682 it can simply pass through to the inferior without reporting. */
1685 remote_pass_signals (struct target_ops
*self
,
1686 int numsigs
, unsigned char *pass_signals
)
1688 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1690 char *pass_packet
, *p
;
1692 struct remote_state
*rs
= get_remote_state ();
1694 gdb_assert (numsigs
< 256);
1695 for (i
= 0; i
< numsigs
; i
++)
1697 if (pass_signals
[i
])
1700 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1701 strcpy (pass_packet
, "QPassSignals:");
1702 p
= pass_packet
+ strlen (pass_packet
);
1703 for (i
= 0; i
< numsigs
; i
++)
1705 if (pass_signals
[i
])
1708 *p
++ = tohex (i
>> 4);
1709 *p
++ = tohex (i
& 15);
1718 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1720 putpkt (pass_packet
);
1721 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1722 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1723 if (rs
->last_pass_packet
)
1724 xfree (rs
->last_pass_packet
);
1725 rs
->last_pass_packet
= pass_packet
;
1728 xfree (pass_packet
);
1732 /* If 'QProgramSignals' is supported, tell the remote stub what
1733 signals it should pass through to the inferior when detaching. */
1736 remote_program_signals (struct target_ops
*self
,
1737 int numsigs
, unsigned char *signals
)
1739 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
1743 struct remote_state
*rs
= get_remote_state ();
1745 gdb_assert (numsigs
< 256);
1746 for (i
= 0; i
< numsigs
; i
++)
1751 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1752 strcpy (packet
, "QProgramSignals:");
1753 p
= packet
+ strlen (packet
);
1754 for (i
= 0; i
< numsigs
; i
++)
1756 if (signal_pass_state (i
))
1759 *p
++ = tohex (i
>> 4);
1760 *p
++ = tohex (i
& 15);
1769 if (!rs
->last_program_signals_packet
1770 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1773 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1774 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1775 xfree (rs
->last_program_signals_packet
);
1776 rs
->last_program_signals_packet
= packet
;
1783 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1784 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1785 thread. If GEN is set, set the general thread, if not, then set
1786 the step/continue thread. */
1788 set_thread (struct ptid ptid
, int gen
)
1790 struct remote_state
*rs
= get_remote_state ();
1791 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1792 char *buf
= rs
->buf
;
1793 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1795 if (ptid_equal (state
, ptid
))
1799 *buf
++ = gen
? 'g' : 'c';
1800 if (ptid_equal (ptid
, magic_null_ptid
))
1801 xsnprintf (buf
, endbuf
- buf
, "0");
1802 else if (ptid_equal (ptid
, any_thread_ptid
))
1803 xsnprintf (buf
, endbuf
- buf
, "0");
1804 else if (ptid_equal (ptid
, minus_one_ptid
))
1805 xsnprintf (buf
, endbuf
- buf
, "-1");
1807 write_ptid (buf
, endbuf
, ptid
);
1809 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1811 rs
->general_thread
= ptid
;
1813 rs
->continue_thread
= ptid
;
1817 set_general_thread (struct ptid ptid
)
1819 set_thread (ptid
, 1);
1823 set_continue_thread (struct ptid ptid
)
1825 set_thread (ptid
, 0);
1828 /* Change the remote current process. Which thread within the process
1829 ends up selected isn't important, as long as it is the same process
1830 as what INFERIOR_PTID points to.
1832 This comes from that fact that there is no explicit notion of
1833 "selected process" in the protocol. The selected process for
1834 general operations is the process the selected general thread
1838 set_general_process (void)
1840 struct remote_state
*rs
= get_remote_state ();
1842 /* If the remote can't handle multiple processes, don't bother. */
1843 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1846 /* We only need to change the remote current thread if it's pointing
1847 at some other process. */
1848 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1849 set_general_thread (inferior_ptid
);
1853 /* Return nonzero if the thread PTID is still alive on the remote
1857 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1859 struct remote_state
*rs
= get_remote_state ();
1862 if (ptid_equal (ptid
, magic_null_ptid
))
1863 /* The main thread is always alive. */
1866 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
1867 /* The main thread is always alive. This can happen after a
1868 vAttach, if the remote side doesn't support
1873 endp
= rs
->buf
+ get_remote_packet_size ();
1876 write_ptid (p
, endp
, ptid
);
1879 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1880 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1883 /* About these extended threadlist and threadinfo packets. They are
1884 variable length packets but, the fields within them are often fixed
1885 length. They are redundent enough to send over UDP as is the
1886 remote protocol in general. There is a matching unit test module
1889 /* WARNING: This threadref data structure comes from the remote O.S.,
1890 libstub protocol encoding, and remote.c. It is not particularly
1893 /* Right now, the internal structure is int. We want it to be bigger.
1894 Plan to fix this. */
1896 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1898 /* gdb_ext_thread_info is an internal GDB data structure which is
1899 equivalent to the reply of the remote threadinfo packet. */
1901 struct gdb_ext_thread_info
1903 threadref threadid
; /* External form of thread reference. */
1904 int active
; /* Has state interesting to GDB?
1906 char display
[256]; /* Brief state display, name,
1907 blocked/suspended. */
1908 char shortname
[32]; /* To be used to name threads. */
1909 char more_display
[256]; /* Long info, statistics, queue depth,
1913 /* The volume of remote transfers can be limited by submitting
1914 a mask containing bits specifying the desired information.
1915 Use a union of these values as the 'selection' parameter to
1916 get_thread_info. FIXME: Make these TAG names more thread specific. */
1918 #define TAG_THREADID 1
1919 #define TAG_EXISTS 2
1920 #define TAG_DISPLAY 4
1921 #define TAG_THREADNAME 8
1922 #define TAG_MOREDISPLAY 16
1924 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1926 static char *unpack_nibble (char *buf
, int *val
);
1928 static char *unpack_byte (char *buf
, int *value
);
1930 static char *pack_int (char *buf
, int value
);
1932 static char *unpack_int (char *buf
, int *value
);
1934 static char *unpack_string (char *src
, char *dest
, int length
);
1936 static char *pack_threadid (char *pkt
, threadref
*id
);
1938 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1940 void int_to_threadref (threadref
*id
, int value
);
1942 static int threadref_to_int (threadref
*ref
);
1944 static void copy_threadref (threadref
*dest
, threadref
*src
);
1946 static int threadmatch (threadref
*dest
, threadref
*src
);
1948 static char *pack_threadinfo_request (char *pkt
, int mode
,
1951 static int remote_unpack_thread_info_response (char *pkt
,
1952 threadref
*expectedref
,
1953 struct gdb_ext_thread_info
1957 static int remote_get_threadinfo (threadref
*threadid
,
1958 int fieldset
, /*TAG mask */
1959 struct gdb_ext_thread_info
*info
);
1961 static char *pack_threadlist_request (char *pkt
, int startflag
,
1963 threadref
*nextthread
);
1965 static int parse_threadlist_response (char *pkt
,
1967 threadref
*original_echo
,
1968 threadref
*resultlist
,
1971 static int remote_get_threadlist (int startflag
,
1972 threadref
*nextthread
,
1976 threadref
*threadlist
);
1978 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1980 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1981 void *context
, int looplimit
);
1983 static int remote_newthread_step (threadref
*ref
, void *context
);
1986 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1987 buffer we're allowed to write to. Returns
1988 BUF+CHARACTERS_WRITTEN. */
1991 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1994 struct remote_state
*rs
= get_remote_state ();
1996 if (remote_multi_process_p (rs
))
1998 pid
= ptid_get_pid (ptid
);
2000 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2002 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2004 tid
= ptid_get_lwp (ptid
);
2006 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2008 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2013 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2014 passed the last parsed char. Returns null_ptid on error. */
2017 read_ptid (char *buf
, char **obuf
)
2021 ULONGEST pid
= 0, tid
= 0;
2025 /* Multi-process ptid. */
2026 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2028 error (_("invalid remote ptid: %s"), p
);
2031 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2034 return ptid_build (pid
, tid
, 0);
2037 /* No multi-process. Just a tid. */
2038 pp
= unpack_varlen_hex (p
, &tid
);
2040 /* Since the stub is not sending a process id, then default to
2041 what's in inferior_ptid, unless it's null at this point. If so,
2042 then since there's no way to know the pid of the reported
2043 threads, use the magic number. */
2044 if (ptid_equal (inferior_ptid
, null_ptid
))
2045 pid
= ptid_get_pid (magic_null_ptid
);
2047 pid
= ptid_get_pid (inferior_ptid
);
2051 return ptid_build (pid
, tid
, 0);
2057 if (ch
>= 'a' && ch
<= 'f')
2058 return ch
- 'a' + 10;
2059 if (ch
>= '0' && ch
<= '9')
2061 if (ch
>= 'A' && ch
<= 'F')
2062 return ch
- 'A' + 10;
2067 stub_unpack_int (char *buff
, int fieldlength
)
2074 nibble
= stubhex (*buff
++);
2078 retval
= retval
<< 4;
2084 unpack_nibble (char *buf
, int *val
)
2086 *val
= fromhex (*buf
++);
2091 unpack_byte (char *buf
, int *value
)
2093 *value
= stub_unpack_int (buf
, 2);
2098 pack_int (char *buf
, int value
)
2100 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2101 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2102 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2103 buf
= pack_hex_byte (buf
, (value
& 0xff));
2108 unpack_int (char *buf
, int *value
)
2110 *value
= stub_unpack_int (buf
, 8);
2114 #if 0 /* Currently unused, uncomment when needed. */
2115 static char *pack_string (char *pkt
, char *string
);
2118 pack_string (char *pkt
, char *string
)
2123 len
= strlen (string
);
2125 len
= 200; /* Bigger than most GDB packets, junk??? */
2126 pkt
= pack_hex_byte (pkt
, len
);
2130 if ((ch
== '\0') || (ch
== '#'))
2131 ch
= '*'; /* Protect encapsulation. */
2136 #endif /* 0 (unused) */
2139 unpack_string (char *src
, char *dest
, int length
)
2148 pack_threadid (char *pkt
, threadref
*id
)
2151 unsigned char *altid
;
2153 altid
= (unsigned char *) id
;
2154 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2156 pkt
= pack_hex_byte (pkt
, *altid
++);
2162 unpack_threadid (char *inbuf
, threadref
*id
)
2165 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2168 altref
= (char *) id
;
2170 while (inbuf
< limit
)
2172 x
= stubhex (*inbuf
++);
2173 y
= stubhex (*inbuf
++);
2174 *altref
++ = (x
<< 4) | y
;
2179 /* Externally, threadrefs are 64 bits but internally, they are still
2180 ints. This is due to a mismatch of specifications. We would like
2181 to use 64bit thread references internally. This is an adapter
2185 int_to_threadref (threadref
*id
, int value
)
2187 unsigned char *scan
;
2189 scan
= (unsigned char *) id
;
2195 *scan
++ = (value
>> 24) & 0xff;
2196 *scan
++ = (value
>> 16) & 0xff;
2197 *scan
++ = (value
>> 8) & 0xff;
2198 *scan
++ = (value
& 0xff);
2202 threadref_to_int (threadref
*ref
)
2205 unsigned char *scan
;
2211 value
= (value
<< 8) | ((*scan
++) & 0xff);
2216 copy_threadref (threadref
*dest
, threadref
*src
)
2219 unsigned char *csrc
, *cdest
;
2221 csrc
= (unsigned char *) src
;
2222 cdest
= (unsigned char *) dest
;
2229 threadmatch (threadref
*dest
, threadref
*src
)
2231 /* Things are broken right now, so just assume we got a match. */
2233 unsigned char *srcp
, *destp
;
2235 srcp
= (char *) src
;
2236 destp
= (char *) dest
;
2240 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2247 threadid:1, # always request threadid
2254 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2257 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2259 *pkt
++ = 'q'; /* Info Query */
2260 *pkt
++ = 'P'; /* process or thread info */
2261 pkt
= pack_int (pkt
, mode
); /* mode */
2262 pkt
= pack_threadid (pkt
, id
); /* threadid */
2263 *pkt
= '\0'; /* terminate */
2267 /* These values tag the fields in a thread info response packet. */
2268 /* Tagging the fields allows us to request specific fields and to
2269 add more fields as time goes by. */
2271 #define TAG_THREADID 1 /* Echo the thread identifier. */
2272 #define TAG_EXISTS 2 /* Is this process defined enough to
2273 fetch registers and its stack? */
2274 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2275 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2276 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2280 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2281 struct gdb_ext_thread_info
*info
)
2283 struct remote_state
*rs
= get_remote_state ();
2287 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2290 /* info->threadid = 0; FIXME: implement zero_threadref. */
2292 info
->display
[0] = '\0';
2293 info
->shortname
[0] = '\0';
2294 info
->more_display
[0] = '\0';
2296 /* Assume the characters indicating the packet type have been
2298 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2299 pkt
= unpack_threadid (pkt
, &ref
);
2302 warning (_("Incomplete response to threadinfo request."));
2303 if (!threadmatch (&ref
, expectedref
))
2304 { /* This is an answer to a different request. */
2305 warning (_("ERROR RMT Thread info mismatch."));
2308 copy_threadref (&info
->threadid
, &ref
);
2310 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2312 /* Packets are terminated with nulls. */
2313 while ((pkt
< limit
) && mask
&& *pkt
)
2315 pkt
= unpack_int (pkt
, &tag
); /* tag */
2316 pkt
= unpack_byte (pkt
, &length
); /* length */
2317 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2319 warning (_("ERROR RMT: threadinfo tag mismatch."));
2323 if (tag
== TAG_THREADID
)
2327 warning (_("ERROR RMT: length of threadid is not 16."));
2331 pkt
= unpack_threadid (pkt
, &ref
);
2332 mask
= mask
& ~TAG_THREADID
;
2335 if (tag
== TAG_EXISTS
)
2337 info
->active
= stub_unpack_int (pkt
, length
);
2339 mask
= mask
& ~(TAG_EXISTS
);
2342 warning (_("ERROR RMT: 'exists' length too long."));
2348 if (tag
== TAG_THREADNAME
)
2350 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2351 mask
= mask
& ~TAG_THREADNAME
;
2354 if (tag
== TAG_DISPLAY
)
2356 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2357 mask
= mask
& ~TAG_DISPLAY
;
2360 if (tag
== TAG_MOREDISPLAY
)
2362 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2363 mask
= mask
& ~TAG_MOREDISPLAY
;
2366 warning (_("ERROR RMT: unknown thread info tag."));
2367 break; /* Not a tag we know about. */
2373 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2374 struct gdb_ext_thread_info
*info
)
2376 struct remote_state
*rs
= get_remote_state ();
2379 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2381 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2383 if (rs
->buf
[0] == '\0')
2386 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2391 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2394 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2395 threadref
*nextthread
)
2397 *pkt
++ = 'q'; /* info query packet */
2398 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2399 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2400 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2401 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2406 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2409 parse_threadlist_response (char *pkt
, int result_limit
,
2410 threadref
*original_echo
, threadref
*resultlist
,
2413 struct remote_state
*rs
= get_remote_state ();
2415 int count
, resultcount
, done
;
2418 /* Assume the 'q' and 'M chars have been stripped. */
2419 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2420 /* done parse past here */
2421 pkt
= unpack_byte (pkt
, &count
); /* count field */
2422 pkt
= unpack_nibble (pkt
, &done
);
2423 /* The first threadid is the argument threadid. */
2424 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2425 while ((count
-- > 0) && (pkt
< limit
))
2427 pkt
= unpack_threadid (pkt
, resultlist
++);
2428 if (resultcount
++ >= result_limit
)
2437 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2438 int *done
, int *result_count
, threadref
*threadlist
)
2440 struct remote_state
*rs
= get_remote_state ();
2443 /* Trancate result limit to be smaller than the packet size. */
2444 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2445 >= get_remote_packet_size ())
2446 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2448 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2450 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2452 if (*rs
->buf
== '\0')
2456 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2457 &rs
->echo_nextthread
, threadlist
, done
);
2459 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2461 /* FIXME: This is a good reason to drop the packet. */
2462 /* Possably, there is a duplicate response. */
2464 retransmit immediatly - race conditions
2465 retransmit after timeout - yes
2467 wait for packet, then exit
2469 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2470 return 0; /* I choose simply exiting. */
2472 if (*result_count
<= 0)
2476 warning (_("RMT ERROR : failed to get remote thread list."));
2479 return result
; /* break; */
2481 if (*result_count
> result_limit
)
2484 warning (_("RMT ERROR: threadlist response longer than requested."));
2490 /* This is the interface between remote and threads, remotes upper
2493 /* remote_find_new_threads retrieves the thread list and for each
2494 thread in the list, looks up the thread in GDB's internal list,
2495 adding the thread if it does not already exist. This involves
2496 getting partial thread lists from the remote target so, polling the
2497 quit_flag is required. */
2501 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2504 struct remote_state
*rs
= get_remote_state ();
2505 int done
, i
, result_count
;
2513 if (loopcount
++ > looplimit
)
2516 warning (_("Remote fetch threadlist -infinite loop-."));
2519 if (!remote_get_threadlist (startflag
, &rs
->nextthread
,
2520 MAXTHREADLISTRESULTS
,
2521 &done
, &result_count
, rs
->resultthreadlist
))
2526 /* Clear for later iterations. */
2528 /* Setup to resume next batch of thread references, set nextthread. */
2529 if (result_count
>= 1)
2530 copy_threadref (&rs
->nextthread
,
2531 &rs
->resultthreadlist
[result_count
- 1]);
2533 while (result_count
--)
2534 if (!(result
= (*stepfunction
) (&rs
->resultthreadlist
[i
++], context
)))
2541 remote_newthread_step (threadref
*ref
, void *context
)
2543 int pid
= ptid_get_pid (inferior_ptid
);
2544 ptid_t ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2546 if (!in_thread_list (ptid
))
2548 return 1; /* continue iterator */
2551 #define CRAZY_MAX_THREADS 1000
2554 remote_current_thread (ptid_t oldpid
)
2556 struct remote_state
*rs
= get_remote_state ();
2559 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2560 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2561 return read_ptid (&rs
->buf
[2], NULL
);
2566 /* Find new threads for info threads command.
2567 * Original version, using John Metzler's thread protocol.
2571 remote_find_new_threads (void)
2573 remote_threadlist_iterator (remote_newthread_step
, 0,
2577 #if defined(HAVE_LIBEXPAT)
2579 typedef struct thread_item
2585 DEF_VEC_O(thread_item_t
);
2587 struct threads_parsing_context
2589 VEC (thread_item_t
) *items
;
2593 start_thread (struct gdb_xml_parser
*parser
,
2594 const struct gdb_xml_element
*element
,
2595 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2597 struct threads_parsing_context
*data
= user_data
;
2599 struct thread_item item
;
2601 struct gdb_xml_value
*attr
;
2603 id
= xml_find_attribute (attributes
, "id")->value
;
2604 item
.ptid
= read_ptid (id
, NULL
);
2606 attr
= xml_find_attribute (attributes
, "core");
2608 item
.core
= *(ULONGEST
*) attr
->value
;
2614 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2618 end_thread (struct gdb_xml_parser
*parser
,
2619 const struct gdb_xml_element
*element
,
2620 void *user_data
, const char *body_text
)
2622 struct threads_parsing_context
*data
= user_data
;
2624 if (body_text
&& *body_text
)
2625 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2628 const struct gdb_xml_attribute thread_attributes
[] = {
2629 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2630 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2631 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2634 const struct gdb_xml_element thread_children
[] = {
2635 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2638 const struct gdb_xml_element threads_children
[] = {
2639 { "thread", thread_attributes
, thread_children
,
2640 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2641 start_thread
, end_thread
},
2642 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2645 const struct gdb_xml_element threads_elements
[] = {
2646 { "threads", NULL
, threads_children
,
2647 GDB_XML_EF_NONE
, NULL
, NULL
},
2648 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2651 /* Discard the contents of the constructed thread info context. */
2654 clear_threads_parsing_context (void *p
)
2656 struct threads_parsing_context
*context
= p
;
2658 struct thread_item
*item
;
2660 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2661 xfree (item
->extra
);
2663 VEC_free (thread_item_t
, context
->items
);
2669 * Find all threads for info threads command.
2670 * Uses new thread protocol contributed by Cisco.
2671 * Falls back and attempts to use the older method (above)
2672 * if the target doesn't respond to the new method.
2676 remote_threads_info (struct target_ops
*ops
)
2678 struct remote_state
*rs
= get_remote_state ();
2682 if (rs
->remote_desc
== 0) /* paranoia */
2683 error (_("Command can only be used when connected to the remote target."));
2685 #if defined(HAVE_LIBEXPAT)
2686 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2688 char *xml
= target_read_stralloc (¤t_target
,
2689 TARGET_OBJECT_THREADS
, NULL
);
2691 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2695 struct threads_parsing_context context
;
2697 context
.items
= NULL
;
2698 make_cleanup (clear_threads_parsing_context
, &context
);
2700 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2701 threads_elements
, xml
, &context
) == 0)
2704 struct thread_item
*item
;
2707 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2710 if (!ptid_equal (item
->ptid
, null_ptid
))
2712 struct private_thread_info
*info
;
2713 /* In non-stop mode, we assume new found threads
2714 are running until proven otherwise with a
2715 stop reply. In all-stop, we can only get
2716 here if all threads are stopped. */
2717 int running
= non_stop
? 1 : 0;
2719 remote_notice_new_inferior (item
->ptid
, running
);
2721 info
= demand_private_info (item
->ptid
);
2722 info
->core
= item
->core
;
2723 info
->extra
= item
->extra
;
2730 do_cleanups (back_to
);
2735 if (rs
->use_threadinfo_query
)
2737 putpkt ("qfThreadInfo");
2738 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2740 if (bufp
[0] != '\0') /* q packet recognized */
2742 struct cleanup
*old_chain
;
2745 /* remote_notice_new_inferior (in the loop below) may make
2746 new RSP calls, which clobber rs->buf. Work with a
2748 bufp
= saved_reply
= xstrdup (rs
->buf
);
2749 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2751 while (*bufp
++ == 'm') /* reply contains one or more TID */
2755 new_thread
= read_ptid (bufp
, &bufp
);
2756 if (!ptid_equal (new_thread
, null_ptid
))
2758 /* In non-stop mode, we assume new found threads
2759 are running until proven otherwise with a
2760 stop reply. In all-stop, we can only get
2761 here if all threads are stopped. */
2762 int running
= non_stop
? 1 : 0;
2764 remote_notice_new_inferior (new_thread
, running
);
2767 while (*bufp
++ == ','); /* comma-separated list */
2768 free_current_contents (&saved_reply
);
2769 putpkt ("qsThreadInfo");
2770 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2771 bufp
= saved_reply
= xstrdup (rs
->buf
);
2773 do_cleanups (old_chain
);
2778 /* Only qfThreadInfo is supported in non-stop mode. */
2782 /* Else fall back to old method based on jmetzler protocol. */
2783 rs
->use_threadinfo_query
= 0;
2784 remote_find_new_threads ();
2789 * Collect a descriptive string about the given thread.
2790 * The target may say anything it wants to about the thread
2791 * (typically info about its blocked / runnable state, name, etc.).
2792 * This string will appear in the info threads display.
2794 * Optional: targets are not required to implement this function.
2798 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
2800 struct remote_state
*rs
= get_remote_state ();
2804 struct gdb_ext_thread_info threadinfo
;
2805 static char display_buf
[100]; /* arbitrary... */
2806 int n
= 0; /* position in display_buf */
2808 if (rs
->remote_desc
== 0) /* paranoia */
2809 internal_error (__FILE__
, __LINE__
,
2810 _("remote_threads_extra_info"));
2812 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2813 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
2814 /* This is the main thread which was added by GDB. The remote
2815 server doesn't know about it. */
2818 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2820 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2822 if (info
&& info
->private)
2823 return info
->private->extra
;
2828 if (rs
->use_threadextra_query
)
2831 char *endb
= rs
->buf
+ get_remote_packet_size ();
2833 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2835 write_ptid (b
, endb
, tp
->ptid
);
2838 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2839 if (rs
->buf
[0] != 0)
2841 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2842 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2843 display_buf
[result
] = '\0';
2848 /* If the above query fails, fall back to the old method. */
2849 rs
->use_threadextra_query
= 0;
2850 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2851 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2852 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
2853 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2854 if (threadinfo
.active
)
2856 if (*threadinfo
.shortname
)
2857 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2858 " Name: %s,", threadinfo
.shortname
);
2859 if (*threadinfo
.display
)
2860 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2861 " State: %s,", threadinfo
.display
);
2862 if (*threadinfo
.more_display
)
2863 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2864 " Priority: %s", threadinfo
.more_display
);
2868 /* For purely cosmetic reasons, clear up trailing commas. */
2869 if (',' == display_buf
[n
-1])
2870 display_buf
[n
-1] = ' ';
2879 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
2880 struct static_tracepoint_marker
*marker
)
2882 struct remote_state
*rs
= get_remote_state ();
2885 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2887 p
+= hexnumstr (p
, addr
);
2889 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2893 error (_("Remote failure reply: %s"), p
);
2897 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2904 static VEC(static_tracepoint_marker_p
) *
2905 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
2908 struct remote_state
*rs
= get_remote_state ();
2909 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2910 struct static_tracepoint_marker
*marker
= NULL
;
2911 struct cleanup
*old_chain
;
2914 /* Ask for a first packet of static tracepoint marker
2917 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2920 error (_("Remote failure reply: %s"), p
);
2922 old_chain
= make_cleanup (free_current_marker
, &marker
);
2927 marker
= XCNEW (struct static_tracepoint_marker
);
2931 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2933 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2935 VEC_safe_push (static_tracepoint_marker_p
,
2941 release_static_tracepoint_marker (marker
);
2942 memset (marker
, 0, sizeof (*marker
));
2945 while (*p
++ == ','); /* comma-separated list */
2946 /* Ask for another packet of static tracepoint definition. */
2948 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2952 do_cleanups (old_chain
);
2957 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2960 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
2962 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
2966 /* Restart the remote side; this is an extended protocol operation. */
2969 extended_remote_restart (void)
2971 struct remote_state
*rs
= get_remote_state ();
2973 /* Send the restart command; for reasons I don't understand the
2974 remote side really expects a number after the "R". */
2975 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2978 remote_fileio_reset ();
2981 /* Clean up connection to a remote debugger. */
2984 remote_close (struct target_ops
*self
)
2986 struct remote_state
*rs
= get_remote_state ();
2988 if (rs
->remote_desc
== NULL
)
2989 return; /* already closed */
2991 /* Make sure we leave stdin registered in the event loop, and we
2992 don't leave the async SIGINT signal handler installed. */
2993 remote_terminal_ours (self
);
2995 serial_close (rs
->remote_desc
);
2996 rs
->remote_desc
= NULL
;
2998 /* We don't have a connection to the remote stub anymore. Get rid
2999 of all the inferiors and their threads we were controlling.
3000 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3001 will be unable to find the thread corresponding to (pid, 0, 0). */
3002 inferior_ptid
= null_ptid
;
3003 discard_all_inferiors ();
3005 /* We are closing the remote target, so we should discard
3006 everything of this target. */
3007 discard_pending_stop_replies_in_queue (rs
);
3009 if (remote_async_inferior_event_token
)
3010 delete_async_event_handler (&remote_async_inferior_event_token
);
3012 remote_notif_state_xfree (rs
->notif_state
);
3014 trace_reset_local_state ();
3017 /* Query the remote side for the text, data and bss offsets. */
3022 struct remote_state
*rs
= get_remote_state ();
3025 int lose
, num_segments
= 0, do_sections
, do_segments
;
3026 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3027 struct section_offsets
*offs
;
3028 struct symfile_segment_data
*data
;
3030 if (symfile_objfile
== NULL
)
3033 putpkt ("qOffsets");
3034 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3037 if (buf
[0] == '\000')
3038 return; /* Return silently. Stub doesn't support
3042 warning (_("Remote failure reply: %s"), buf
);
3046 /* Pick up each field in turn. This used to be done with scanf, but
3047 scanf will make trouble if CORE_ADDR size doesn't match
3048 conversion directives correctly. The following code will work
3049 with any size of CORE_ADDR. */
3050 text_addr
= data_addr
= bss_addr
= 0;
3054 if (strncmp (ptr
, "Text=", 5) == 0)
3057 /* Don't use strtol, could lose on big values. */
3058 while (*ptr
&& *ptr
!= ';')
3059 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3061 if (strncmp (ptr
, ";Data=", 6) == 0)
3064 while (*ptr
&& *ptr
!= ';')
3065 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3070 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3073 while (*ptr
&& *ptr
!= ';')
3074 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3076 if (bss_addr
!= data_addr
)
3077 warning (_("Target reported unsupported offsets: %s"), buf
);
3082 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3085 /* Don't use strtol, could lose on big values. */
3086 while (*ptr
&& *ptr
!= ';')
3087 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3090 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3093 while (*ptr
&& *ptr
!= ';')
3094 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3102 error (_("Malformed response to offset query, %s"), buf
);
3103 else if (*ptr
!= '\0')
3104 warning (_("Target reported unsupported offsets: %s"), buf
);
3106 offs
= ((struct section_offsets
*)
3107 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3108 memcpy (offs
, symfile_objfile
->section_offsets
,
3109 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3111 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3112 do_segments
= (data
!= NULL
);
3113 do_sections
= num_segments
== 0;
3115 if (num_segments
> 0)
3117 segments
[0] = text_addr
;
3118 segments
[1] = data_addr
;
3120 /* If we have two segments, we can still try to relocate everything
3121 by assuming that the .text and .data offsets apply to the whole
3122 text and data segments. Convert the offsets given in the packet
3123 to base addresses for symfile_map_offsets_to_segments. */
3124 else if (data
&& data
->num_segments
== 2)
3126 segments
[0] = data
->segment_bases
[0] + text_addr
;
3127 segments
[1] = data
->segment_bases
[1] + data_addr
;
3130 /* If the object file has only one segment, assume that it is text
3131 rather than data; main programs with no writable data are rare,
3132 but programs with no code are useless. Of course the code might
3133 have ended up in the data segment... to detect that we would need
3134 the permissions here. */
3135 else if (data
&& data
->num_segments
== 1)
3137 segments
[0] = data
->segment_bases
[0] + text_addr
;
3140 /* There's no way to relocate by segment. */
3146 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3147 offs
, num_segments
, segments
);
3149 if (ret
== 0 && !do_sections
)
3150 error (_("Can not handle qOffsets TextSeg "
3151 "response with this symbol file"));
3158 free_symfile_segment_data (data
);
3162 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3164 /* This is a temporary kludge to force data and bss to use the
3165 same offsets because that's what nlmconv does now. The real
3166 solution requires changes to the stub and remote.c that I
3167 don't have time to do right now. */
3169 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3170 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3173 objfile_relocate (symfile_objfile
, offs
);
3176 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3177 threads we know are stopped already. This is used during the
3178 initial remote connection in non-stop mode --- threads that are
3179 reported as already being stopped are left stopped. */
3182 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3184 /* If we have a stop reply for this thread, it must be stopped. */
3185 if (peek_stop_reply (thread
->ptid
))
3186 set_stop_requested (thread
->ptid
, 1);
3191 /* Send interrupt_sequence to remote target. */
3193 send_interrupt_sequence (void)
3195 struct remote_state
*rs
= get_remote_state ();
3197 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3198 remote_serial_write ("\x03", 1);
3199 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3200 serial_send_break (rs
->remote_desc
);
3201 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3203 serial_send_break (rs
->remote_desc
);
3204 remote_serial_write ("g", 1);
3207 internal_error (__FILE__
, __LINE__
,
3208 _("Invalid value for interrupt_sequence_mode: %s."),
3209 interrupt_sequence_mode
);
3213 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3214 and extract the PTID. Returns NULL_PTID if not found. */
3217 stop_reply_extract_thread (char *stop_reply
)
3219 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3223 /* Txx r:val ; r:val (...) */
3226 /* Look for "register" named "thread". */
3231 p1
= strchr (p
, ':');
3235 if (strncmp (p
, "thread", p1
- p
) == 0)
3236 return read_ptid (++p1
, &p
);
3238 p1
= strchr (p
, ';');
3250 /* Determine the remote side's current thread. If we have a stop
3251 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3252 "thread" register we can extract the current thread from. If not,
3253 ask the remote which is the current thread with qC. The former
3254 method avoids a roundtrip. */
3257 get_current_thread (char *wait_status
)
3261 /* Note we don't use remote_parse_stop_reply as that makes use of
3262 the target architecture, which we haven't yet fully determined at
3264 if (wait_status
!= NULL
)
3265 ptid
= stop_reply_extract_thread (wait_status
);
3266 if (ptid_equal (ptid
, null_ptid
))
3267 ptid
= remote_current_thread (inferior_ptid
);
3272 /* Query the remote target for which is the current thread/process,
3273 add it to our tables, and update INFERIOR_PTID. The caller is
3274 responsible for setting the state such that the remote end is ready
3275 to return the current thread.
3277 This function is called after handling the '?' or 'vRun' packets,
3278 whose response is a stop reply from which we can also try
3279 extracting the thread. If the target doesn't support the explicit
3280 qC query, we infer the current thread from that stop reply, passed
3281 in in WAIT_STATUS, which may be NULL. */
3284 add_current_inferior_and_thread (char *wait_status
)
3286 struct remote_state
*rs
= get_remote_state ();
3288 ptid_t ptid
= null_ptid
;
3290 inferior_ptid
= null_ptid
;
3292 /* Now, if we have thread information, update inferior_ptid. */
3293 ptid
= get_current_thread (wait_status
);
3295 if (!ptid_equal (ptid
, null_ptid
))
3297 if (!remote_multi_process_p (rs
))
3300 inferior_ptid
= ptid
;
3304 /* Without this, some commands which require an active target
3305 (such as kill) won't work. This variable serves (at least)
3306 double duty as both the pid of the target process (if it has
3307 such), and as a flag indicating that a target is active. */
3308 inferior_ptid
= magic_null_ptid
;
3312 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3314 /* Add the main thread. */
3315 add_thread_silent (inferior_ptid
);
3319 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3321 struct remote_state
*rs
= get_remote_state ();
3322 struct packet_config
*noack_config
;
3323 char *wait_status
= NULL
;
3325 immediate_quit
++; /* Allow user to interrupt it. */
3328 if (interrupt_on_connect
)
3329 send_interrupt_sequence ();
3331 /* Ack any packet which the remote side has already sent. */
3332 serial_write (rs
->remote_desc
, "+", 1);
3334 /* Signal other parts that we're going through the initial setup,
3335 and so things may not be stable yet. */
3336 rs
->starting_up
= 1;
3338 /* The first packet we send to the target is the optional "supported
3339 packets" request. If the target can answer this, it will tell us
3340 which later probes to skip. */
3341 remote_query_supported ();
3343 /* If the stub wants to get a QAllow, compose one and send it. */
3344 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3345 remote_set_permissions (target
);
3347 /* Next, we possibly activate noack mode.
3349 If the QStartNoAckMode packet configuration is set to AUTO,
3350 enable noack mode if the stub reported a wish for it with
3353 If set to TRUE, then enable noack mode even if the stub didn't
3354 report it in qSupported. If the stub doesn't reply OK, the
3355 session ends with an error.
3357 If FALSE, then don't activate noack mode, regardless of what the
3358 stub claimed should be the default with qSupported. */
3360 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3361 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3363 putpkt ("QStartNoAckMode");
3364 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3365 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3371 /* Tell the remote that we are using the extended protocol. */
3373 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3376 /* Let the target know which signals it is allowed to pass down to
3378 update_signals_program_target ();
3380 /* Next, if the target can specify a description, read it. We do
3381 this before anything involving memory or registers. */
3382 target_find_description ();
3384 /* Next, now that we know something about the target, update the
3385 address spaces in the program spaces. */
3386 update_address_spaces ();
3388 /* On OSs where the list of libraries is global to all
3389 processes, we fetch them early. */
3390 if (gdbarch_has_global_solist (target_gdbarch ()))
3391 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3395 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3396 error (_("Non-stop mode requested, but remote "
3397 "does not support non-stop"));
3399 putpkt ("QNonStop:1");
3400 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3402 if (strcmp (rs
->buf
, "OK") != 0)
3403 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3405 /* Find about threads and processes the stub is already
3406 controlling. We default to adding them in the running state.
3407 The '?' query below will then tell us about which threads are
3409 remote_threads_info (target
);
3411 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
3413 /* Don't assume that the stub can operate in all-stop mode.
3414 Request it explicitly. */
3415 putpkt ("QNonStop:0");
3416 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3418 if (strcmp (rs
->buf
, "OK") != 0)
3419 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3422 /* Upload TSVs regardless of whether the target is running or not. The
3423 remote stub, such as GDBserver, may have some predefined or builtin
3424 TSVs, even if the target is not running. */
3425 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3427 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3429 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3430 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3433 /* Check whether the target is running now. */
3435 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3441 struct inferior
*inf
;
3443 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3446 error (_("The target is not running (try extended-remote?)"));
3448 /* We're connected, but not running. Drop out before we
3449 call start_remote. */
3450 rs
->starting_up
= 0;
3455 /* Save the reply for later. */
3456 wait_status
= alloca (strlen (rs
->buf
) + 1);
3457 strcpy (wait_status
, rs
->buf
);
3460 /* Fetch thread list. */
3461 target_find_new_threads ();
3463 /* Let the stub know that we want it to return the thread. */
3464 set_continue_thread (minus_one_ptid
);
3466 if (thread_count () == 0)
3468 /* Target has no concept of threads at all. GDB treats
3469 non-threaded target as single-threaded; add a main
3471 add_current_inferior_and_thread (wait_status
);
3475 /* We have thread information; select the thread the target
3476 says should be current. If we're reconnecting to a
3477 multi-threaded program, this will ideally be the thread
3478 that last reported an event before GDB disconnected. */
3479 inferior_ptid
= get_current_thread (wait_status
);
3480 if (ptid_equal (inferior_ptid
, null_ptid
))
3482 /* Odd... The target was able to list threads, but not
3483 tell us which thread was current (no "thread"
3484 register in T stop reply?). Just pick the first
3485 thread in the thread list then. */
3486 inferior_ptid
= thread_list
->ptid
;
3490 /* init_wait_for_inferior should be called before get_offsets in order
3491 to manage `inserted' flag in bp loc in a correct state.
3492 breakpoint_init_inferior, called from init_wait_for_inferior, set
3493 `inserted' flag to 0, while before breakpoint_re_set, called from
3494 start_remote, set `inserted' flag to 1. In the initialization of
3495 inferior, breakpoint_init_inferior should be called first, and then
3496 breakpoint_re_set can be called. If this order is broken, state of
3497 `inserted' flag is wrong, and cause some problems on breakpoint
3499 init_wait_for_inferior ();
3501 get_offsets (); /* Get text, data & bss offsets. */
3503 /* If we could not find a description using qXfer, and we know
3504 how to do it some other way, try again. This is not
3505 supported for non-stop; it could be, but it is tricky if
3506 there are no stopped threads when we connect. */
3507 if (remote_read_description_p (target
)
3508 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3510 target_clear_description ();
3511 target_find_description ();
3514 /* Use the previously fetched status. */
3515 gdb_assert (wait_status
!= NULL
);
3516 strcpy (rs
->buf
, wait_status
);
3517 rs
->cached_wait_status
= 1;
3520 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3524 /* Clear WFI global state. Do this before finding about new
3525 threads and inferiors, and setting the current inferior.
3526 Otherwise we would clear the proceed status of the current
3527 inferior when we want its stop_soon state to be preserved
3528 (see notice_new_inferior). */
3529 init_wait_for_inferior ();
3531 /* In non-stop, we will either get an "OK", meaning that there
3532 are no stopped threads at this time; or, a regular stop
3533 reply. In the latter case, there may be more than one thread
3534 stopped --- we pull them all out using the vStopped
3536 if (strcmp (rs
->buf
, "OK") != 0)
3538 struct notif_client
*notif
= ¬if_client_stop
;
3540 /* remote_notif_get_pending_replies acks this one, and gets
3542 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3543 = remote_notif_parse (notif
, rs
->buf
);
3544 remote_notif_get_pending_events (notif
);
3546 /* Make sure that threads that were stopped remain
3548 iterate_over_threads (set_stop_requested_callback
, NULL
);
3551 if (target_can_async_p ())
3552 target_async (inferior_event_handler
, 0);
3554 if (thread_count () == 0)
3557 error (_("The target is not running (try extended-remote?)"));
3559 /* We're connected, but not running. Drop out before we
3560 call start_remote. */
3561 rs
->starting_up
= 0;
3565 /* Let the stub know that we want it to return the thread. */
3567 /* Force the stub to choose a thread. */
3568 set_general_thread (null_ptid
);
3571 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3572 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3573 error (_("remote didn't report the current thread in non-stop mode"));
3575 get_offsets (); /* Get text, data & bss offsets. */
3577 /* In non-stop mode, any cached wait status will be stored in
3578 the stop reply queue. */
3579 gdb_assert (wait_status
== NULL
);
3581 /* Report all signals during attach/startup. */
3582 remote_pass_signals (target
, 0, NULL
);
3585 /* If we connected to a live target, do some additional setup. */
3586 if (target_has_execution
)
3588 if (symfile_objfile
) /* No use without a symbol-file. */
3589 remote_check_symbols ();
3592 /* Possibly the target has been engaged in a trace run started
3593 previously; find out where things are at. */
3594 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3596 struct uploaded_tp
*uploaded_tps
= NULL
;
3598 if (current_trace_status ()->running
)
3599 printf_filtered (_("Trace is already running on the target.\n"));
3601 remote_upload_tracepoints (target
, &uploaded_tps
);
3603 merge_uploaded_tracepoints (&uploaded_tps
);
3606 /* The thread and inferior lists are now synchronized with the
3607 target, our symbols have been relocated, and we're merged the
3608 target's tracepoints with ours. We're done with basic start
3610 rs
->starting_up
= 0;
3612 /* If breakpoints are global, insert them now. */
3613 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3614 && breakpoints_always_inserted_mode ())
3615 insert_breakpoints ();
3618 /* Open a connection to a remote debugger.
3619 NAME is the filename used for communication. */
3622 remote_open (char *name
, int from_tty
)
3624 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3627 /* Open a connection to a remote debugger using the extended
3628 remote gdb protocol. NAME is the filename used for communication. */
3631 extended_remote_open (char *name
, int from_tty
)
3633 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3636 /* Reset all packets back to "unknown support". Called when opening a
3637 new connection to a remote target. */
3640 reset_all_packet_configs_support (void)
3644 for (i
= 0; i
< PACKET_MAX
; i
++)
3645 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3648 /* Initialize all packet configs. */
3651 init_all_packet_configs (void)
3655 for (i
= 0; i
< PACKET_MAX
; i
++)
3657 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
3658 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3662 /* Symbol look-up. */
3665 remote_check_symbols (void)
3667 struct remote_state
*rs
= get_remote_state ();
3668 char *msg
, *reply
, *tmp
;
3669 struct bound_minimal_symbol sym
;
3672 /* The remote side has no concept of inferiors that aren't running
3673 yet, it only knows about running processes. If we're connected
3674 but our current inferior is not running, we should not invite the
3675 remote target to request symbol lookups related to its
3676 (unrelated) current process. */
3677 if (!target_has_execution
)
3680 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
3683 /* Make sure the remote is pointing at the right process. Note
3684 there's no way to select "no process". */
3685 set_general_process ();
3687 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3688 because we need both at the same time. */
3689 msg
= alloca (get_remote_packet_size ());
3691 /* Invite target to request symbol lookups. */
3693 putpkt ("qSymbol::");
3694 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3695 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3698 while (strncmp (reply
, "qSymbol:", 8) == 0)
3700 struct bound_minimal_symbol sym
;
3703 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3705 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3706 if (sym
.minsym
== NULL
)
3707 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3710 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3711 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
3713 /* If this is a function address, return the start of code
3714 instead of any data function descriptor. */
3715 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3719 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3720 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3724 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3729 static struct serial
*
3730 remote_serial_open (char *name
)
3732 static int udp_warning
= 0;
3734 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3735 of in ser-tcp.c, because it is the remote protocol assuming that the
3736 serial connection is reliable and not the serial connection promising
3738 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3740 warning (_("The remote protocol may be unreliable over UDP.\n"
3741 "Some events may be lost, rendering further debugging "
3746 return serial_open (name
);
3749 /* Inform the target of our permission settings. The permission flags
3750 work without this, but if the target knows the settings, it can do
3751 a couple things. First, it can add its own check, to catch cases
3752 that somehow manage to get by the permissions checks in target
3753 methods. Second, if the target is wired to disallow particular
3754 settings (for instance, a system in the field that is not set up to
3755 be able to stop at a breakpoint), it can object to any unavailable
3759 remote_set_permissions (struct target_ops
*self
)
3761 struct remote_state
*rs
= get_remote_state ();
3763 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3764 "WriteReg:%x;WriteMem:%x;"
3765 "InsertBreak:%x;InsertTrace:%x;"
3766 "InsertFastTrace:%x;Stop:%x",
3767 may_write_registers
, may_write_memory
,
3768 may_insert_breakpoints
, may_insert_tracepoints
,
3769 may_insert_fast_tracepoints
, may_stop
);
3771 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3773 /* If the target didn't like the packet, warn the user. Do not try
3774 to undo the user's settings, that would just be maddening. */
3775 if (strcmp (rs
->buf
, "OK") != 0)
3776 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3779 /* This type describes each known response to the qSupported
3781 struct protocol_feature
3783 /* The name of this protocol feature. */
3786 /* The default for this protocol feature. */
3787 enum packet_support default_support
;
3789 /* The function to call when this feature is reported, or after
3790 qSupported processing if the feature is not supported.
3791 The first argument points to this structure. The second
3792 argument indicates whether the packet requested support be
3793 enabled, disabled, or probed (or the default, if this function
3794 is being called at the end of processing and this feature was
3795 not reported). The third argument may be NULL; if not NULL, it
3796 is a NUL-terminated string taken from the packet following
3797 this feature's name and an equals sign. */
3798 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3801 /* The corresponding packet for this feature. Only used if
3802 FUNC is remote_supported_packet. */
3807 remote_supported_packet (const struct protocol_feature
*feature
,
3808 enum packet_support support
,
3809 const char *argument
)
3813 warning (_("Remote qSupported response supplied an unexpected value for"
3814 " \"%s\"."), feature
->name
);
3818 remote_protocol_packets
[feature
->packet
].support
= support
;
3822 remote_packet_size (const struct protocol_feature
*feature
,
3823 enum packet_support support
, const char *value
)
3825 struct remote_state
*rs
= get_remote_state ();
3830 if (support
!= PACKET_ENABLE
)
3833 if (value
== NULL
|| *value
== '\0')
3835 warning (_("Remote target reported \"%s\" without a size."),
3841 packet_size
= strtol (value
, &value_end
, 16);
3842 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3844 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3845 feature
->name
, value
);
3849 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3851 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3852 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3853 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3856 /* Record the new maximum packet size. */
3857 rs
->explicit_packet_size
= packet_size
;
3860 static const struct protocol_feature remote_protocol_features
[] = {
3861 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3862 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3863 PACKET_qXfer_auxv
},
3864 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3865 PACKET_qXfer_features
},
3866 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3867 PACKET_qXfer_libraries
},
3868 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3869 PACKET_qXfer_libraries_svr4
},
3870 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3871 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
3872 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3873 PACKET_qXfer_memory_map
},
3874 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3875 PACKET_qXfer_spu_read
},
3876 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3877 PACKET_qXfer_spu_write
},
3878 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3879 PACKET_qXfer_osdata
},
3880 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3881 PACKET_qXfer_threads
},
3882 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3883 PACKET_qXfer_traceframe_info
},
3884 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3885 PACKET_QPassSignals
},
3886 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3887 PACKET_QProgramSignals
},
3888 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3889 PACKET_QStartNoAckMode
},
3890 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
3891 PACKET_multiprocess_feature
},
3892 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
3893 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3894 PACKET_qXfer_siginfo_read
},
3895 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3896 PACKET_qXfer_siginfo_write
},
3897 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3898 PACKET_ConditionalTracepoints
},
3899 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
3900 PACKET_ConditionalBreakpoints
},
3901 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
3902 PACKET_BreakpointCommands
},
3903 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3904 PACKET_FastTracepoints
},
3905 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3906 PACKET_StaticTracepoints
},
3907 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
3908 PACKET_InstallInTrace
},
3909 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
3910 PACKET_DisconnectedTracing_feature
},
3911 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3913 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3915 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3916 PACKET_TracepointSource
},
3917 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3919 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3920 PACKET_EnableDisableTracepoints_feature
},
3921 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3922 PACKET_qXfer_fdpic
},
3923 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3925 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3926 PACKET_QDisableRandomization
},
3927 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3928 { "QTBuffer:size", PACKET_DISABLE
,
3929 remote_supported_packet
, PACKET_QTBuffer_size
},
3930 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
3931 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
3932 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
3933 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
3934 PACKET_qXfer_btrace
}
3937 static char *remote_support_xml
;
3939 /* Register string appended to "xmlRegisters=" in qSupported query. */
3942 register_remote_support_xml (const char *xml
)
3944 #if defined(HAVE_LIBEXPAT)
3945 if (remote_support_xml
== NULL
)
3946 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3949 char *copy
= xstrdup (remote_support_xml
+ 13);
3950 char *p
= strtok (copy
, ",");
3954 if (strcmp (p
, xml
) == 0)
3961 while ((p
= strtok (NULL
, ",")) != NULL
);
3964 remote_support_xml
= reconcat (remote_support_xml
,
3965 remote_support_xml
, ",", xml
,
3972 remote_query_supported_append (char *msg
, const char *append
)
3975 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3977 return xstrdup (append
);
3981 remote_query_supported (void)
3983 struct remote_state
*rs
= get_remote_state ();
3986 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3988 /* The packet support flags are handled differently for this packet
3989 than for most others. We treat an error, a disabled packet, and
3990 an empty response identically: any features which must be reported
3991 to be used will be automatically disabled. An empty buffer
3992 accomplishes this, since that is also the representation for a list
3993 containing no features. */
3996 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
3999 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4001 q
= remote_query_supported_append (q
, "multiprocess+");
4003 if (remote_support_xml
)
4004 q
= remote_query_supported_append (q
, remote_support_xml
);
4006 q
= remote_query_supported_append (q
, "qRelocInsn+");
4008 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4011 do_cleanups (old_chain
);
4013 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4015 /* If an error occured, warn, but do not return - just reset the
4016 buffer to empty and go on to disable features. */
4017 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4020 warning (_("Remote failure reply: %s"), rs
->buf
);
4025 memset (seen
, 0, sizeof (seen
));
4030 enum packet_support is_supported
;
4031 char *p
, *end
, *name_end
, *value
;
4033 /* First separate out this item from the rest of the packet. If
4034 there's another item after this, we overwrite the separator
4035 (terminated strings are much easier to work with). */
4037 end
= strchr (p
, ';');
4040 end
= p
+ strlen (p
);
4050 warning (_("empty item in \"qSupported\" response"));
4055 name_end
= strchr (p
, '=');
4058 /* This is a name=value entry. */
4059 is_supported
= PACKET_ENABLE
;
4060 value
= name_end
+ 1;
4069 is_supported
= PACKET_ENABLE
;
4073 is_supported
= PACKET_DISABLE
;
4077 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4081 warning (_("unrecognized item \"%s\" "
4082 "in \"qSupported\" response"), p
);
4088 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4089 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4091 const struct protocol_feature
*feature
;
4094 feature
= &remote_protocol_features
[i
];
4095 feature
->func (feature
, is_supported
, value
);
4100 /* If we increased the packet size, make sure to increase the global
4101 buffer size also. We delay this until after parsing the entire
4102 qSupported packet, because this is the same buffer we were
4104 if (rs
->buf_size
< rs
->explicit_packet_size
)
4106 rs
->buf_size
= rs
->explicit_packet_size
;
4107 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4110 /* Handle the defaults for unmentioned features. */
4111 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4114 const struct protocol_feature
*feature
;
4116 feature
= &remote_protocol_features
[i
];
4117 feature
->func (feature
, feature
->default_support
, NULL
);
4121 /* Remove any of the remote.c targets from target stack. Upper targets depend
4122 on it so remove them first. */
4125 remote_unpush_target (void)
4127 pop_all_targets_above (process_stratum
- 1);
4131 remote_open_1 (char *name
, int from_tty
,
4132 struct target_ops
*target
, int extended_p
)
4134 struct remote_state
*rs
= get_remote_state ();
4137 error (_("To open a remote debug connection, you need to specify what\n"
4138 "serial device is attached to the remote system\n"
4139 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4141 /* See FIXME above. */
4142 if (!target_async_permitted
)
4143 wait_forever_enabled_p
= 1;
4145 /* If we're connected to a running target, target_preopen will kill it.
4146 Ask this question first, before target_preopen has a chance to kill
4148 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4151 && !query (_("Already connected to a remote target. Disconnect? ")))
4152 error (_("Still connected."));
4155 /* Here the possibly existing remote target gets unpushed. */
4156 target_preopen (from_tty
);
4158 /* Make sure we send the passed signals list the next time we resume. */
4159 xfree (rs
->last_pass_packet
);
4160 rs
->last_pass_packet
= NULL
;
4162 /* Make sure we send the program signals list the next time we
4164 xfree (rs
->last_program_signals_packet
);
4165 rs
->last_program_signals_packet
= NULL
;
4167 remote_fileio_reset ();
4168 reopen_exec_file ();
4171 rs
->remote_desc
= remote_serial_open (name
);
4172 if (!rs
->remote_desc
)
4173 perror_with_name (name
);
4175 if (baud_rate
!= -1)
4177 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4179 /* The requested speed could not be set. Error out to
4180 top level after closing remote_desc. Take care to
4181 set remote_desc to NULL to avoid closing remote_desc
4183 serial_close (rs
->remote_desc
);
4184 rs
->remote_desc
= NULL
;
4185 perror_with_name (name
);
4189 serial_raw (rs
->remote_desc
);
4191 /* If there is something sitting in the buffer we might take it as a
4192 response to a command, which would be bad. */
4193 serial_flush_input (rs
->remote_desc
);
4197 puts_filtered ("Remote debugging using ");
4198 puts_filtered (name
);
4199 puts_filtered ("\n");
4201 push_target (target
); /* Switch to using remote target now. */
4203 /* Register extra event sources in the event loop. */
4204 remote_async_inferior_event_token
4205 = create_async_event_handler (remote_async_inferior_event_handler
,
4207 rs
->notif_state
= remote_notif_state_allocate ();
4209 /* Reset the target state; these things will be queried either by
4210 remote_query_supported or as they are needed. */
4211 reset_all_packet_configs_support ();
4212 rs
->cached_wait_status
= 0;
4213 rs
->explicit_packet_size
= 0;
4215 rs
->extended
= extended_p
;
4216 rs
->waiting_for_stop_reply
= 0;
4217 rs
->ctrlc_pending_p
= 0;
4219 rs
->general_thread
= not_sent_ptid
;
4220 rs
->continue_thread
= not_sent_ptid
;
4221 rs
->remote_traceframe_number
= -1;
4223 /* Probe for ability to use "ThreadInfo" query, as required. */
4224 rs
->use_threadinfo_query
= 1;
4225 rs
->use_threadextra_query
= 1;
4227 if (target_async_permitted
)
4229 /* With this target we start out by owning the terminal. */
4230 remote_async_terminal_ours_p
= 1;
4232 /* FIXME: cagney/1999-09-23: During the initial connection it is
4233 assumed that the target is already ready and able to respond to
4234 requests. Unfortunately remote_start_remote() eventually calls
4235 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4236 around this. Eventually a mechanism that allows
4237 wait_for_inferior() to expect/get timeouts will be
4239 wait_forever_enabled_p
= 0;
4242 /* First delete any symbols previously loaded from shared libraries. */
4243 no_shared_libraries (NULL
, 0);
4246 init_thread_list ();
4248 /* Start the remote connection. If error() or QUIT, discard this
4249 target (we'd otherwise be in an inconsistent state) and then
4250 propogate the error on up the exception chain. This ensures that
4251 the caller doesn't stumble along blindly assuming that the
4252 function succeeded. The CLI doesn't have this problem but other
4253 UI's, such as MI do.
4255 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4256 this function should return an error indication letting the
4257 caller restore the previous state. Unfortunately the command
4258 ``target remote'' is directly wired to this function making that
4259 impossible. On a positive note, the CLI side of this problem has
4260 been fixed - the function set_cmd_context() makes it possible for
4261 all the ``target ....'' commands to share a common callback
4262 function. See cli-dump.c. */
4264 volatile struct gdb_exception ex
;
4266 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4268 remote_start_remote (from_tty
, target
, extended_p
);
4272 /* Pop the partially set up target - unless something else did
4273 already before throwing the exception. */
4274 if (rs
->remote_desc
!= NULL
)
4275 remote_unpush_target ();
4276 if (target_async_permitted
)
4277 wait_forever_enabled_p
= 1;
4278 throw_exception (ex
);
4282 if (target_async_permitted
)
4283 wait_forever_enabled_p
= 1;
4286 /* This takes a program previously attached to and detaches it. After
4287 this is done, GDB can be used to debug some other program. We
4288 better not have left any breakpoints in the target program or it'll
4289 die when it hits one. */
4292 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4294 int pid
= ptid_get_pid (inferior_ptid
);
4295 struct remote_state
*rs
= get_remote_state ();
4298 error (_("Argument given to \"detach\" when remotely debugging."));
4300 if (!target_has_execution
)
4301 error (_("No process to detach from."));
4305 char *exec_file
= get_exec_file (0);
4306 if (exec_file
== NULL
)
4308 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4309 target_pid_to_str (pid_to_ptid (pid
)));
4310 gdb_flush (gdb_stdout
);
4313 /* Tell the remote target to detach. */
4314 if (remote_multi_process_p (rs
))
4315 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4317 strcpy (rs
->buf
, "D");
4320 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4322 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4324 else if (rs
->buf
[0] == '\0')
4325 error (_("Remote doesn't know how to detach"));
4327 error (_("Can't detach process."));
4329 if (from_tty
&& !extended
)
4330 puts_filtered (_("Ending remote debugging.\n"));
4332 target_mourn_inferior ();
4336 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4338 remote_detach_1 (args
, from_tty
, 0);
4342 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4344 remote_detach_1 (args
, from_tty
, 1);
4347 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4350 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4353 error (_("Argument given to \"disconnect\" when remotely debugging."));
4355 /* Make sure we unpush even the extended remote targets; mourn
4356 won't do it. So call remote_mourn_1 directly instead of
4357 target_mourn_inferior. */
4358 remote_mourn_1 (target
);
4361 puts_filtered ("Ending remote debugging.\n");
4364 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4365 be chatty about it. */
4368 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4370 struct remote_state
*rs
= get_remote_state ();
4372 char *wait_status
= NULL
;
4374 pid
= parse_pid_to_attach (args
);
4376 /* Remote PID can be freely equal to getpid, do not check it here the same
4377 way as in other targets. */
4379 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
4380 error (_("This target does not support attaching to a process"));
4384 char *exec_file
= get_exec_file (0);
4387 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4388 target_pid_to_str (pid_to_ptid (pid
)));
4390 printf_unfiltered (_("Attaching to %s\n"),
4391 target_pid_to_str (pid_to_ptid (pid
)));
4393 gdb_flush (gdb_stdout
);
4396 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4398 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4400 switch (packet_ok (rs
->buf
,
4401 &remote_protocol_packets
[PACKET_vAttach
]))
4406 /* Save the reply for later. */
4407 wait_status
= alloca (strlen (rs
->buf
) + 1);
4408 strcpy (wait_status
, rs
->buf
);
4410 else if (strcmp (rs
->buf
, "OK") != 0)
4411 error (_("Attaching to %s failed with: %s"),
4412 target_pid_to_str (pid_to_ptid (pid
)),
4415 case PACKET_UNKNOWN
:
4416 error (_("This target does not support attaching to a process"));
4418 error (_("Attaching to %s failed"),
4419 target_pid_to_str (pid_to_ptid (pid
)));
4422 set_current_inferior (remote_add_inferior (0, pid
, 1));
4424 inferior_ptid
= pid_to_ptid (pid
);
4428 struct thread_info
*thread
;
4430 /* Get list of threads. */
4431 remote_threads_info (target
);
4433 thread
= first_thread_of_process (pid
);
4435 inferior_ptid
= thread
->ptid
;
4437 inferior_ptid
= pid_to_ptid (pid
);
4439 /* Invalidate our notion of the remote current thread. */
4440 record_currthread (rs
, minus_one_ptid
);
4444 /* Now, if we have thread information, update inferior_ptid. */
4445 inferior_ptid
= remote_current_thread (inferior_ptid
);
4447 /* Add the main thread to the thread list. */
4448 add_thread_silent (inferior_ptid
);
4451 /* Next, if the target can specify a description, read it. We do
4452 this before anything involving memory or registers. */
4453 target_find_description ();
4457 /* Use the previously fetched status. */
4458 gdb_assert (wait_status
!= NULL
);
4460 if (target_can_async_p ())
4462 struct notif_event
*reply
4463 = remote_notif_parse (¬if_client_stop
, wait_status
);
4465 push_stop_reply ((struct stop_reply
*) reply
);
4467 target_async (inferior_event_handler
, 0);
4471 gdb_assert (wait_status
!= NULL
);
4472 strcpy (rs
->buf
, wait_status
);
4473 rs
->cached_wait_status
= 1;
4477 gdb_assert (wait_status
== NULL
);
4481 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4483 extended_remote_attach_1 (ops
, args
, from_tty
);
4487 /* Check for the availability of vCont. This function should also check
4491 remote_vcont_probe (struct remote_state
*rs
)
4495 strcpy (rs
->buf
, "vCont?");
4497 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4500 /* Make sure that the features we assume are supported. */
4501 if (strncmp (buf
, "vCont", 5) == 0)
4504 int support_s
, support_S
, support_c
, support_C
;
4510 rs
->supports_vCont
.t
= 0;
4511 rs
->supports_vCont
.r
= 0;
4512 while (p
&& *p
== ';')
4515 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4517 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4519 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4521 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4523 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4524 rs
->supports_vCont
.t
= 1;
4525 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4526 rs
->supports_vCont
.r
= 1;
4528 p
= strchr (p
, ';');
4531 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4532 BUF will make packet_ok disable the packet. */
4533 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4537 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4540 /* Helper function for building "vCont" resumptions. Write a
4541 resumption to P. ENDP points to one-passed-the-end of the buffer
4542 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4543 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4544 resumed thread should be single-stepped and/or signalled. If PTID
4545 equals minus_one_ptid, then all threads are resumed; if PTID
4546 represents a process, then all threads of the process are resumed;
4547 the thread to be stepped and/or signalled is given in the global
4551 append_resumption (char *p
, char *endp
,
4552 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4554 struct remote_state
*rs
= get_remote_state ();
4556 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4557 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4559 /* GDB is willing to range step. */
4560 && use_range_stepping
4561 /* Target supports range stepping. */
4562 && rs
->supports_vCont
.r
4563 /* We don't currently support range stepping multiple
4564 threads with a wildcard (though the protocol allows it,
4565 so stubs shouldn't make an active effort to forbid
4567 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4569 struct thread_info
*tp
;
4571 if (ptid_equal (ptid
, minus_one_ptid
))
4573 /* If we don't know about the target thread's tid, then
4574 we're resuming magic_null_ptid (see caller). */
4575 tp
= find_thread_ptid (magic_null_ptid
);
4578 tp
= find_thread_ptid (ptid
);
4579 gdb_assert (tp
!= NULL
);
4581 if (tp
->control
.may_range_step
)
4583 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4585 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4586 phex_nz (tp
->control
.step_range_start
,
4588 phex_nz (tp
->control
.step_range_end
,
4592 p
+= xsnprintf (p
, endp
- p
, ";s");
4595 p
+= xsnprintf (p
, endp
- p
, ";s");
4596 else if (siggnal
!= GDB_SIGNAL_0
)
4597 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4599 p
+= xsnprintf (p
, endp
- p
, ";c");
4601 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4605 /* All (-1) threads of process. */
4606 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4608 p
+= xsnprintf (p
, endp
- p
, ":");
4609 p
= write_ptid (p
, endp
, nptid
);
4611 else if (!ptid_equal (ptid
, minus_one_ptid
))
4613 p
+= xsnprintf (p
, endp
- p
, ":");
4614 p
= write_ptid (p
, endp
, ptid
);
4620 /* Append a vCont continue-with-signal action for threads that have a
4621 non-zero stop signal. */
4624 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4626 struct thread_info
*thread
;
4628 ALL_THREADS (thread
)
4629 if (ptid_match (thread
->ptid
, ptid
)
4630 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4631 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4632 && signal_pass_state (thread
->suspend
.stop_signal
))
4634 p
= append_resumption (p
, endp
, thread
->ptid
,
4635 0, thread
->suspend
.stop_signal
);
4636 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4642 /* Resume the remote inferior by using a "vCont" packet. The thread
4643 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4644 resumed thread should be single-stepped and/or signalled. If PTID
4645 equals minus_one_ptid, then all threads are resumed; the thread to
4646 be stepped and/or signalled is given in the global INFERIOR_PTID.
4647 This function returns non-zero iff it resumes the inferior.
4649 This function issues a strict subset of all possible vCont commands at the
4653 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4655 struct remote_state
*rs
= get_remote_state ();
4659 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4660 remote_vcont_probe (rs
);
4662 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
4666 endp
= rs
->buf
+ get_remote_packet_size ();
4668 /* If we could generate a wider range of packets, we'd have to worry
4669 about overflowing BUF. Should there be a generic
4670 "multi-part-packet" packet? */
4672 p
+= xsnprintf (p
, endp
- p
, "vCont");
4674 if (ptid_equal (ptid
, magic_null_ptid
))
4676 /* MAGIC_NULL_PTID means that we don't have any active threads,
4677 so we don't have any TID numbers the inferior will
4678 understand. Make sure to only send forms that do not specify
4680 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4682 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4684 /* Resume all threads (of all processes, or of a single
4685 process), with preference for INFERIOR_PTID. This assumes
4686 inferior_ptid belongs to the set of all threads we are about
4688 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4690 /* Step inferior_ptid, with or without signal. */
4691 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4694 /* Also pass down any pending signaled resumption for other
4695 threads not the current. */
4696 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4698 /* And continue others without a signal. */
4699 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4703 /* Scheduler locking; resume only PTID. */
4704 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4707 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4712 /* In non-stop, the stub replies to vCont with "OK". The stop
4713 reply will be reported asynchronously by means of a `%Stop'
4715 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4716 if (strcmp (rs
->buf
, "OK") != 0)
4717 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4723 /* Tell the remote machine to resume. */
4726 remote_resume (struct target_ops
*ops
,
4727 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4729 struct remote_state
*rs
= get_remote_state ();
4732 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4733 (explained in remote-notif.c:handle_notification) so
4734 remote_notif_process is not called. We need find a place where
4735 it is safe to start a 'vNotif' sequence. It is good to do it
4736 before resuming inferior, because inferior was stopped and no RSP
4737 traffic at that moment. */
4739 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4741 rs
->last_sent_signal
= siggnal
;
4742 rs
->last_sent_step
= step
;
4744 /* The vCont packet doesn't need to specify threads via Hc. */
4745 /* No reverse support (yet) for vCont. */
4746 if (execution_direction
!= EXEC_REVERSE
)
4747 if (remote_vcont_resume (ptid
, step
, siggnal
))
4750 /* All other supported resume packets do use Hc, so set the continue
4752 if (ptid_equal (ptid
, minus_one_ptid
))
4753 set_continue_thread (any_thread_ptid
);
4755 set_continue_thread (ptid
);
4758 if (execution_direction
== EXEC_REVERSE
)
4760 /* We don't pass signals to the target in reverse exec mode. */
4761 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4762 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4765 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
4766 error (_("Remote reverse-step not supported."));
4767 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
4768 error (_("Remote reverse-continue not supported."));
4770 strcpy (buf
, step
? "bs" : "bc");
4772 else if (siggnal
!= GDB_SIGNAL_0
)
4774 buf
[0] = step
? 'S' : 'C';
4775 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4776 buf
[2] = tohex (((int) siggnal
) & 0xf);
4780 strcpy (buf
, step
? "s" : "c");
4785 /* We are about to start executing the inferior, let's register it
4786 with the event loop. NOTE: this is the one place where all the
4787 execution commands end up. We could alternatively do this in each
4788 of the execution commands in infcmd.c. */
4789 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4790 into infcmd.c in order to allow inferior function calls to work
4791 NOT asynchronously. */
4792 if (target_can_async_p ())
4793 target_async (inferior_event_handler
, 0);
4795 /* We've just told the target to resume. The remote server will
4796 wait for the inferior to stop, and then send a stop reply. In
4797 the mean time, we can't start another command/query ourselves
4798 because the stub wouldn't be ready to process it. This applies
4799 only to the base all-stop protocol, however. In non-stop (which
4800 only supports vCont), the stub replies with an "OK", and is
4801 immediate able to process further serial input. */
4803 rs
->waiting_for_stop_reply
= 1;
4807 /* Set up the signal handler for SIGINT, while the target is
4808 executing, ovewriting the 'regular' SIGINT signal handler. */
4810 async_initialize_sigint_signal_handler (void)
4812 signal (SIGINT
, async_handle_remote_sigint
);
4815 /* Signal handler for SIGINT, while the target is executing. */
4817 async_handle_remote_sigint (int sig
)
4819 signal (sig
, async_handle_remote_sigint_twice
);
4820 mark_async_signal_handler (async_sigint_remote_token
);
4823 /* Signal handler for SIGINT, installed after SIGINT has already been
4824 sent once. It will take effect the second time that the user sends
4827 async_handle_remote_sigint_twice (int sig
)
4829 signal (sig
, async_handle_remote_sigint
);
4830 mark_async_signal_handler (async_sigint_remote_twice_token
);
4833 /* Perform the real interruption of the target execution, in response
4836 async_remote_interrupt (gdb_client_data arg
)
4839 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4841 target_stop (inferior_ptid
);
4844 /* Perform interrupt, if the first attempt did not succeed. Just give
4845 up on the target alltogether. */
4847 async_remote_interrupt_twice (gdb_client_data arg
)
4850 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4855 /* Reinstall the usual SIGINT handlers, after the target has
4858 async_cleanup_sigint_signal_handler (void *dummy
)
4860 signal (SIGINT
, handle_sigint
);
4863 /* Send ^C to target to halt it. Target will respond, and send us a
4865 static void (*ofunc
) (int);
4867 /* The command line interface's stop routine. This function is installed
4868 as a signal handler for SIGINT. The first time a user requests a
4869 stop, we call remote_stop to send a break or ^C. If there is no
4870 response from the target (it didn't stop when the user requested it),
4871 we ask the user if he'd like to detach from the target. */
4873 sync_remote_interrupt (int signo
)
4875 /* If this doesn't work, try more severe steps. */
4876 signal (signo
, sync_remote_interrupt_twice
);
4878 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
4881 /* The user typed ^C twice. */
4884 sync_remote_interrupt_twice (int signo
)
4886 signal (signo
, ofunc
);
4887 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
4888 signal (signo
, sync_remote_interrupt
);
4891 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4892 thread, all threads of a remote process, or all threads of all
4896 remote_stop_ns (ptid_t ptid
)
4898 struct remote_state
*rs
= get_remote_state ();
4900 char *endp
= rs
->buf
+ get_remote_packet_size ();
4902 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4903 remote_vcont_probe (rs
);
4905 if (!rs
->supports_vCont
.t
)
4906 error (_("Remote server does not support stopping threads"));
4908 if (ptid_equal (ptid
, minus_one_ptid
)
4909 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4910 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4915 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4917 if (ptid_is_pid (ptid
))
4918 /* All (-1) threads of process. */
4919 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4922 /* Small optimization: if we already have a stop reply for
4923 this thread, no use in telling the stub we want this
4925 if (peek_stop_reply (ptid
))
4931 write_ptid (p
, endp
, nptid
);
4934 /* In non-stop, we get an immediate OK reply. The stop reply will
4935 come in asynchronously by notification. */
4937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4938 if (strcmp (rs
->buf
, "OK") != 0)
4939 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4942 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4943 remote target. It is undefined which thread of which process
4944 reports the stop. */
4947 remote_stop_as (ptid_t ptid
)
4949 struct remote_state
*rs
= get_remote_state ();
4951 rs
->ctrlc_pending_p
= 1;
4953 /* If the inferior is stopped already, but the core didn't know
4954 about it yet, just ignore the request. The cached wait status
4955 will be collected in remote_wait. */
4956 if (rs
->cached_wait_status
)
4959 /* Send interrupt_sequence to remote target. */
4960 send_interrupt_sequence ();
4963 /* This is the generic stop called via the target vector. When a target
4964 interrupt is requested, either by the command line or the GUI, we
4965 will eventually end up here. */
4968 remote_stop (struct target_ops
*self
, ptid_t ptid
)
4971 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4974 remote_stop_ns (ptid
);
4976 remote_stop_as (ptid
);
4979 /* Ask the user what to do when an interrupt is received. */
4982 interrupt_query (void)
4984 target_terminal_ours ();
4986 if (target_can_async_p ())
4988 signal (SIGINT
, handle_sigint
);
4993 if (query (_("Interrupted while waiting for the program.\n\
4994 Give up (and stop debugging it)? ")))
4996 remote_unpush_target ();
5001 target_terminal_inferior ();
5004 /* Enable/disable target terminal ownership. Most targets can use
5005 terminal groups to control terminal ownership. Remote targets are
5006 different in that explicit transfer of ownership to/from GDB/target
5010 remote_terminal_inferior (struct target_ops
*self
)
5012 if (!target_async_permitted
)
5013 /* Nothing to do. */
5016 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5017 idempotent. The event-loop GDB talking to an asynchronous target
5018 with a synchronous command calls this function from both
5019 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5020 transfer the terminal to the target when it shouldn't this guard
5022 if (!remote_async_terminal_ours_p
)
5024 delete_file_handler (input_fd
);
5025 remote_async_terminal_ours_p
= 0;
5026 async_initialize_sigint_signal_handler ();
5027 /* NOTE: At this point we could also register our selves as the
5028 recipient of all input. Any characters typed could then be
5029 passed on down to the target. */
5033 remote_terminal_ours (struct target_ops
*self
)
5035 if (!target_async_permitted
)
5036 /* Nothing to do. */
5039 /* See FIXME in remote_terminal_inferior. */
5040 if (remote_async_terminal_ours_p
)
5042 async_cleanup_sigint_signal_handler (NULL
);
5043 add_file_handler (input_fd
, stdin_event_handler
, 0);
5044 remote_async_terminal_ours_p
= 1;
5048 remote_console_output (char *msg
)
5052 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5055 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5059 fputs_unfiltered (tb
, gdb_stdtarg
);
5061 gdb_flush (gdb_stdtarg
);
5064 typedef struct cached_reg
5067 gdb_byte data
[MAX_REGISTER_SIZE
];
5070 DEF_VEC_O(cached_reg_t
);
5072 typedef struct stop_reply
5074 struct notif_event base
;
5076 /* The identifier of the thread about this event */
5079 /* The remote state this event is associated with. When the remote
5080 connection, represented by a remote_state object, is closed,
5081 all the associated stop_reply events should be released. */
5082 struct remote_state
*rs
;
5084 struct target_waitstatus ws
;
5086 /* Expedited registers. This makes remote debugging a bit more
5087 efficient for those targets that provide critical registers as
5088 part of their normal status mechanism (as another roundtrip to
5089 fetch them is avoided). */
5090 VEC(cached_reg_t
) *regcache
;
5092 int stopped_by_watchpoint_p
;
5093 CORE_ADDR watch_data_address
;
5098 DECLARE_QUEUE_P (stop_reply_p
);
5099 DEFINE_QUEUE_P (stop_reply_p
);
5100 /* The list of already fetched and acknowledged stop events. This
5101 queue is used for notification Stop, and other notifications
5102 don't need queue for their events, because the notification events
5103 of Stop can't be consumed immediately, so that events should be
5104 queued first, and be consumed by remote_wait_{ns,as} one per
5105 time. Other notifications can consume their events immediately,
5106 so queue is not needed for them. */
5107 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5110 stop_reply_xfree (struct stop_reply
*r
)
5112 notif_event_xfree ((struct notif_event
*) r
);
5116 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5117 struct notif_event
*event
)
5119 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5123 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5124 struct notif_event
*event
)
5126 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5129 putpkt ((char *) self
->ack_command
);
5131 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5132 /* We got an unknown stop reply. */
5133 error (_("Unknown stop reply"));
5135 push_stop_reply (stop_reply
);
5139 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5141 /* We can't get pending events in remote_notif_process for
5142 notification stop, and we have to do this in remote_wait_ns
5143 instead. If we fetch all queued events from stub, remote stub
5144 may exit and we have no chance to process them back in
5146 mark_async_event_handler (remote_async_inferior_event_token
);
5151 stop_reply_dtr (struct notif_event
*event
)
5153 struct stop_reply
*r
= (struct stop_reply
*) event
;
5155 VEC_free (cached_reg_t
, r
->regcache
);
5158 static struct notif_event
*
5159 remote_notif_stop_alloc_reply (void)
5161 struct notif_event
*r
5162 = (struct notif_event
*) XNEW (struct stop_reply
);
5164 r
->dtr
= stop_reply_dtr
;
5169 /* A client of notification Stop. */
5171 struct notif_client notif_client_stop
=
5175 remote_notif_stop_parse
,
5176 remote_notif_stop_ack
,
5177 remote_notif_stop_can_get_pending_events
,
5178 remote_notif_stop_alloc_reply
,
5182 /* A parameter to pass data in and out. */
5184 struct queue_iter_param
5187 struct stop_reply
*output
;
5190 /* Remove stop replies in the queue if its pid is equal to the given
5194 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5195 QUEUE_ITER (stop_reply_p
) *iter
,
5199 struct queue_iter_param
*param
= data
;
5200 struct inferior
*inf
= param
->input
;
5202 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5204 stop_reply_xfree (event
);
5205 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5211 /* Discard all pending stop replies of inferior INF. */
5214 discard_pending_stop_replies (struct inferior
*inf
)
5217 struct queue_iter_param param
;
5218 struct stop_reply
*reply
;
5219 struct remote_state
*rs
= get_remote_state ();
5220 struct remote_notif_state
*rns
= rs
->notif_state
;
5222 /* This function can be notified when an inferior exists. When the
5223 target is not remote, the notification state is NULL. */
5224 if (rs
->remote_desc
== NULL
)
5227 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5229 /* Discard the in-flight notification. */
5230 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5232 stop_reply_xfree (reply
);
5233 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5237 param
.output
= NULL
;
5238 /* Discard the stop replies we have already pulled with
5240 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5241 remove_stop_reply_for_inferior
, ¶m
);
5244 /* If its remote state is equal to the given remote state,
5245 remove EVENT from the stop reply queue. */
5248 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5249 QUEUE_ITER (stop_reply_p
) *iter
,
5253 struct queue_iter_param
*param
= data
;
5254 struct remote_state
*rs
= param
->input
;
5256 if (event
->rs
== rs
)
5258 stop_reply_xfree (event
);
5259 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5265 /* Discard the stop replies for RS in stop_reply_queue. */
5268 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5270 struct queue_iter_param param
;
5273 param
.output
= NULL
;
5274 /* Discard the stop replies we have already pulled with
5276 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5277 remove_stop_reply_of_remote_state
, ¶m
);
5280 /* A parameter to pass data in and out. */
5283 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5284 QUEUE_ITER (stop_reply_p
) *iter
,
5288 struct queue_iter_param
*param
= data
;
5289 ptid_t
*ptid
= param
->input
;
5291 if (ptid_match (event
->ptid
, *ptid
))
5293 param
->output
= event
;
5294 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5301 /* Remove the first reply in 'stop_reply_queue' which matches
5304 static struct stop_reply
*
5305 remote_notif_remove_queued_reply (ptid_t ptid
)
5307 struct queue_iter_param param
;
5309 param
.input
= &ptid
;
5310 param
.output
= NULL
;
5312 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5313 remote_notif_remove_once_on_match
, ¶m
);
5315 fprintf_unfiltered (gdb_stdlog
,
5316 "notif: discard queued event: 'Stop' in %s\n",
5317 target_pid_to_str (ptid
));
5319 return param
.output
;
5322 /* Look for a queued stop reply belonging to PTID. If one is found,
5323 remove it from the queue, and return it. Returns NULL if none is
5324 found. If there are still queued events left to process, tell the
5325 event loop to get back to target_wait soon. */
5327 static struct stop_reply
*
5328 queued_stop_reply (ptid_t ptid
)
5330 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5332 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5333 /* There's still at least an event left. */
5334 mark_async_event_handler (remote_async_inferior_event_token
);
5339 /* Push a fully parsed stop reply in the stop reply queue. Since we
5340 know that we now have at least one queued event left to pass to the
5341 core side, tell the event loop to get back to target_wait soon. */
5344 push_stop_reply (struct stop_reply
*new_event
)
5346 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5349 fprintf_unfiltered (gdb_stdlog
,
5350 "notif: push 'Stop' %s to queue %d\n",
5351 target_pid_to_str (new_event
->ptid
),
5352 QUEUE_length (stop_reply_p
,
5355 mark_async_event_handler (remote_async_inferior_event_token
);
5359 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5360 QUEUE_ITER (stop_reply_p
) *iter
,
5361 struct stop_reply
*event
,
5364 ptid_t
*ptid
= data
;
5366 return !(ptid_equal (*ptid
, event
->ptid
)
5367 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5370 /* Returns true if we have a stop reply for PTID. */
5373 peek_stop_reply (ptid_t ptid
)
5375 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5376 stop_reply_match_ptid_and_ws
, &ptid
);
5379 /* Parse the stop reply in BUF. Either the function succeeds, and the
5380 result is stored in EVENT, or throws an error. */
5383 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5385 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5389 event
->ptid
= null_ptid
;
5390 event
->rs
= get_remote_state ();
5391 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5392 event
->ws
.value
.integer
= 0;
5393 event
->stopped_by_watchpoint_p
= 0;
5394 event
->regcache
= NULL
;
5399 case 'T': /* Status with PC, SP, FP, ... */
5400 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5401 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5403 n... = register number
5404 r... = register contents
5407 p
= &buf
[3]; /* after Txx */
5415 /* If the packet contains a register number, save it in
5416 pnum and set p1 to point to the character following it.
5417 Otherwise p1 points to p. */
5419 /* If this packet is an awatch packet, don't parse the 'a'
5420 as a register number. */
5422 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5423 && strncmp (p
, "core", strlen ("core") != 0))
5425 /* Read the ``P'' register number. */
5426 pnum
= strtol (p
, &p_temp
, 16);
5432 if (p1
== p
) /* No register number present here. */
5434 p1
= strchr (p
, ':');
5436 error (_("Malformed packet(a) (missing colon): %s\n\
5439 if (strncmp (p
, "thread", p1
- p
) == 0)
5440 event
->ptid
= read_ptid (++p1
, &p
);
5441 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5442 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5443 || (strncmp (p
, "awatch", p1
- p
) == 0))
5445 event
->stopped_by_watchpoint_p
= 1;
5446 p
= unpack_varlen_hex (++p1
, &addr
);
5447 event
->watch_data_address
= (CORE_ADDR
) addr
;
5449 else if (strncmp (p
, "library", p1
- p
) == 0)
5453 while (*p_temp
&& *p_temp
!= ';')
5456 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5459 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5461 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5462 /* p1 will indicate "begin" or "end", but it makes
5463 no difference for now, so ignore it. */
5464 p_temp
= strchr (p1
+ 1, ';');
5468 else if (strncmp (p
, "core", p1
- p
) == 0)
5472 p
= unpack_varlen_hex (++p1
, &c
);
5477 /* Silently skip unknown optional info. */
5478 p_temp
= strchr (p1
+ 1, ';');
5485 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5486 cached_reg_t cached_reg
;
5491 error (_("Malformed packet(b) (missing colon): %s\n\
5497 error (_("Remote sent bad register number %s: %s\n\
5499 hex_string (pnum
), p
, buf
);
5501 cached_reg
.num
= reg
->regnum
;
5503 fieldsize
= hex2bin (p
, cached_reg
.data
,
5504 register_size (target_gdbarch (),
5507 if (fieldsize
< register_size (target_gdbarch (),
5509 warning (_("Remote reply is too short: %s"), buf
);
5511 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5515 error (_("Remote register badly formatted: %s\nhere: %s"),
5520 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5524 case 'S': /* Old style status, just signal only. */
5528 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5529 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5530 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5531 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5533 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5536 case 'W': /* Target exited. */
5543 /* GDB used to accept only 2 hex chars here. Stubs should
5544 only send more if they detect GDB supports multi-process
5546 p
= unpack_varlen_hex (&buf
[1], &value
);
5550 /* The remote process exited. */
5551 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5552 event
->ws
.value
.integer
= value
;
5556 /* The remote process exited with a signal. */
5557 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5558 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5559 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5561 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5564 /* If no process is specified, assume inferior_ptid. */
5565 pid
= ptid_get_pid (inferior_ptid
);
5574 else if (strncmp (p
,
5575 "process:", sizeof ("process:") - 1) == 0)
5579 p
+= sizeof ("process:") - 1;
5580 unpack_varlen_hex (p
, &upid
);
5584 error (_("unknown stop reply packet: %s"), buf
);
5587 error (_("unknown stop reply packet: %s"), buf
);
5588 event
->ptid
= pid_to_ptid (pid
);
5593 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5594 error (_("No process or thread specified in stop reply: %s"), buf
);
5597 /* When the stub wants to tell GDB about a new notification reply, it
5598 sends a notification (%Stop, for example). Those can come it at
5599 any time, hence, we have to make sure that any pending
5600 putpkt/getpkt sequence we're making is finished, before querying
5601 the stub for more events with the corresponding ack command
5602 (vStopped, for example). E.g., if we started a vStopped sequence
5603 immediately upon receiving the notification, something like this
5611 1.6) <-- (registers reply to step #1.3)
5613 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5616 To solve this, whenever we parse a %Stop notification successfully,
5617 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5618 doing whatever we were doing:
5624 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5625 2.5) <-- (registers reply to step #2.3)
5627 Eventualy after step #2.5, we return to the event loop, which
5628 notices there's an event on the
5629 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5630 associated callback --- the function below. At this point, we're
5631 always safe to start a vStopped sequence. :
5634 2.7) <-- T05 thread:2
5640 remote_notif_get_pending_events (struct notif_client
*nc
)
5642 struct remote_state
*rs
= get_remote_state ();
5644 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5647 fprintf_unfiltered (gdb_stdlog
,
5648 "notif: process: '%s' ack pending event\n",
5652 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5653 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5657 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5658 if (strcmp (rs
->buf
, "OK") == 0)
5661 remote_notif_ack (nc
, rs
->buf
);
5667 fprintf_unfiltered (gdb_stdlog
,
5668 "notif: process: '%s' no pending reply\n",
5673 /* Called when it is decided that STOP_REPLY holds the info of the
5674 event that is to be returned to the core. This function always
5675 destroys STOP_REPLY. */
5678 process_stop_reply (struct stop_reply
*stop_reply
,
5679 struct target_waitstatus
*status
)
5683 *status
= stop_reply
->ws
;
5684 ptid
= stop_reply
->ptid
;
5686 /* If no thread/process was reported by the stub, assume the current
5688 if (ptid_equal (ptid
, null_ptid
))
5689 ptid
= inferior_ptid
;
5691 if (status
->kind
!= TARGET_WAITKIND_EXITED
5692 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5694 struct remote_state
*rs
= get_remote_state ();
5696 /* Expedited registers. */
5697 if (stop_reply
->regcache
)
5699 struct regcache
*regcache
5700 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5705 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5707 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5708 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5711 rs
->remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5712 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5714 remote_notice_new_inferior (ptid
, 0);
5715 demand_private_info (ptid
)->core
= stop_reply
->core
;
5718 stop_reply_xfree (stop_reply
);
5722 /* The non-stop mode version of target_wait. */
5725 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5727 struct remote_state
*rs
= get_remote_state ();
5728 struct stop_reply
*stop_reply
;
5732 /* If in non-stop mode, get out of getpkt even if a
5733 notification is received. */
5735 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5736 0 /* forever */, &is_notif
);
5739 if (ret
!= -1 && !is_notif
)
5742 case 'E': /* Error of some sort. */
5743 /* We're out of sync with the target now. Did it continue
5744 or not? We can't tell which thread it was in non-stop,
5745 so just ignore this. */
5746 warning (_("Remote failure reply: %s"), rs
->buf
);
5748 case 'O': /* Console output. */
5749 remote_console_output (rs
->buf
+ 1);
5752 warning (_("Invalid remote reply: %s"), rs
->buf
);
5756 /* Acknowledge a pending stop reply that may have arrived in the
5758 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5759 remote_notif_get_pending_events (¬if_client_stop
);
5761 /* If indeed we noticed a stop reply, we're done. */
5762 stop_reply
= queued_stop_reply (ptid
);
5763 if (stop_reply
!= NULL
)
5764 return process_stop_reply (stop_reply
, status
);
5766 /* Still no event. If we're just polling for an event, then
5767 return to the event loop. */
5768 if (options
& TARGET_WNOHANG
)
5770 status
->kind
= TARGET_WAITKIND_IGNORE
;
5771 return minus_one_ptid
;
5774 /* Otherwise do a blocking wait. */
5775 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5776 1 /* forever */, &is_notif
);
5780 /* Wait until the remote machine stops, then return, storing status in
5781 STATUS just as `wait' would. */
5784 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5786 struct remote_state
*rs
= get_remote_state ();
5787 ptid_t event_ptid
= null_ptid
;
5789 struct stop_reply
*stop_reply
;
5793 status
->kind
= TARGET_WAITKIND_IGNORE
;
5794 status
->value
.integer
= 0;
5796 stop_reply
= queued_stop_reply (ptid
);
5797 if (stop_reply
!= NULL
)
5798 return process_stop_reply (stop_reply
, status
);
5800 if (rs
->cached_wait_status
)
5801 /* Use the cached wait status, but only once. */
5802 rs
->cached_wait_status
= 0;
5808 if (!target_is_async_p ())
5810 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5811 /* If the user hit C-c before this packet, or between packets,
5812 pretend that it was hit right here. */
5813 if (check_quit_flag ())
5816 sync_remote_interrupt (SIGINT
);
5820 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5821 _never_ wait for ever -> test on target_is_async_p().
5822 However, before we do that we need to ensure that the caller
5823 knows how to take the target into/out of async mode. */
5824 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5825 wait_forever_enabled_p
, &is_notif
);
5827 if (!target_is_async_p ())
5828 signal (SIGINT
, ofunc
);
5830 /* GDB gets a notification. Return to core as this event is
5832 if (ret
!= -1 && is_notif
)
5833 return minus_one_ptid
;
5838 rs
->remote_stopped_by_watchpoint_p
= 0;
5840 /* We got something. */
5841 rs
->waiting_for_stop_reply
= 0;
5843 /* Assume that the target has acknowledged Ctrl-C unless we receive
5844 an 'F' or 'O' packet. */
5845 if (buf
[0] != 'F' && buf
[0] != 'O')
5846 rs
->ctrlc_pending_p
= 0;
5850 case 'E': /* Error of some sort. */
5851 /* We're out of sync with the target now. Did it continue or
5852 not? Not is more likely, so report a stop. */
5853 warning (_("Remote failure reply: %s"), buf
);
5854 status
->kind
= TARGET_WAITKIND_STOPPED
;
5855 status
->value
.sig
= GDB_SIGNAL_0
;
5857 case 'F': /* File-I/O request. */
5858 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5859 rs
->ctrlc_pending_p
= 0;
5861 case 'T': case 'S': case 'X': case 'W':
5863 struct stop_reply
*stop_reply
5864 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5867 event_ptid
= process_stop_reply (stop_reply
, status
);
5870 case 'O': /* Console output. */
5871 remote_console_output (buf
+ 1);
5873 /* The target didn't really stop; keep waiting. */
5874 rs
->waiting_for_stop_reply
= 1;
5878 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
5880 /* Zero length reply means that we tried 'S' or 'C' and the
5881 remote system doesn't support it. */
5882 target_terminal_ours_for_output ();
5884 ("Can't send signals to this remote system. %s not sent.\n",
5885 gdb_signal_to_name (rs
->last_sent_signal
));
5886 rs
->last_sent_signal
= GDB_SIGNAL_0
;
5887 target_terminal_inferior ();
5889 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
5890 putpkt ((char *) buf
);
5892 /* We just told the target to resume, so a stop reply is in
5894 rs
->waiting_for_stop_reply
= 1;
5897 /* else fallthrough */
5899 warning (_("Invalid remote reply: %s"), buf
);
5901 rs
->waiting_for_stop_reply
= 1;
5905 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5907 /* Nothing interesting happened. If we're doing a non-blocking
5908 poll, we're done. Otherwise, go back to waiting. */
5909 if (options
& TARGET_WNOHANG
)
5910 return minus_one_ptid
;
5914 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5915 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5917 if (!ptid_equal (event_ptid
, null_ptid
))
5918 record_currthread (rs
, event_ptid
);
5920 event_ptid
= inferior_ptid
;
5923 /* A process exit. Invalidate our notion of current thread. */
5924 record_currthread (rs
, minus_one_ptid
);
5929 /* Wait until the remote machine stops, then return, storing status in
5930 STATUS just as `wait' would. */
5933 remote_wait (struct target_ops
*ops
,
5934 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5939 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5941 event_ptid
= remote_wait_as (ptid
, status
, options
);
5943 if (target_can_async_p ())
5945 /* If there are are events left in the queue tell the event loop
5947 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5948 mark_async_event_handler (remote_async_inferior_event_token
);
5954 /* Fetch a single register using a 'p' packet. */
5957 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5959 struct remote_state
*rs
= get_remote_state ();
5961 char regp
[MAX_REGISTER_SIZE
];
5964 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
5967 if (reg
->pnum
== -1)
5972 p
+= hexnumstr (p
, reg
->pnum
);
5975 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5979 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5983 case PACKET_UNKNOWN
:
5986 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5987 gdbarch_register_name (get_regcache_arch (regcache
),
5992 /* If this register is unfetchable, tell the regcache. */
5995 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5999 /* Otherwise, parse and supply the value. */
6005 error (_("fetch_register_using_p: early buf termination"));
6007 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6010 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6014 /* Fetch the registers included in the target's 'g' packet. */
6017 send_g_packet (void)
6019 struct remote_state
*rs
= get_remote_state ();
6022 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6023 remote_send (&rs
->buf
, &rs
->buf_size
);
6025 /* We can get out of synch in various cases. If the first character
6026 in the buffer is not a hex character, assume that has happened
6027 and try to fetch another packet to read. */
6028 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6029 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6030 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6031 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6034 fprintf_unfiltered (gdb_stdlog
,
6035 "Bad register packet; fetching a new packet\n");
6036 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6039 buf_len
= strlen (rs
->buf
);
6041 /* Sanity check the received packet. */
6042 if (buf_len
% 2 != 0)
6043 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6049 process_g_packet (struct regcache
*regcache
)
6051 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6052 struct remote_state
*rs
= get_remote_state ();
6053 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6058 buf_len
= strlen (rs
->buf
);
6060 /* Further sanity checks, with knowledge of the architecture. */
6061 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6062 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6064 /* Save the size of the packet sent to us by the target. It is used
6065 as a heuristic when determining the max size of packets that the
6066 target can safely receive. */
6067 if (rsa
->actual_register_packet_size
== 0)
6068 rsa
->actual_register_packet_size
= buf_len
;
6070 /* If this is smaller than we guessed the 'g' packet would be,
6071 update our records. A 'g' reply that doesn't include a register's
6072 value implies either that the register is not available, or that
6073 the 'p' packet must be used. */
6074 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6076 rsa
->sizeof_g_packet
= buf_len
/ 2;
6078 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6080 if (rsa
->regs
[i
].pnum
== -1)
6083 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6084 rsa
->regs
[i
].in_g_packet
= 0;
6086 rsa
->regs
[i
].in_g_packet
= 1;
6090 regs
= alloca (rsa
->sizeof_g_packet
);
6092 /* Unimplemented registers read as all bits zero. */
6093 memset (regs
, 0, rsa
->sizeof_g_packet
);
6095 /* Reply describes registers byte by byte, each byte encoded as two
6096 hex characters. Suck them all up, then supply them to the
6097 register cacheing/storage mechanism. */
6100 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6102 if (p
[0] == 0 || p
[1] == 0)
6103 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6104 internal_error (__FILE__
, __LINE__
,
6105 _("unexpected end of 'g' packet reply"));
6107 if (p
[0] == 'x' && p
[1] == 'x')
6108 regs
[i
] = 0; /* 'x' */
6110 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6114 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6116 struct packet_reg
*r
= &rsa
->regs
[i
];
6120 if (r
->offset
* 2 >= strlen (rs
->buf
))
6121 /* This shouldn't happen - we adjusted in_g_packet above. */
6122 internal_error (__FILE__
, __LINE__
,
6123 _("unexpected end of 'g' packet reply"));
6124 else if (rs
->buf
[r
->offset
* 2] == 'x')
6126 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6127 /* The register isn't available, mark it as such (at
6128 the same time setting the value to zero). */
6129 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6132 regcache_raw_supply (regcache
, r
->regnum
,
6139 fetch_registers_using_g (struct regcache
*regcache
)
6142 process_g_packet (regcache
);
6145 /* Make the remote selected traceframe match GDB's selected
6149 set_remote_traceframe (void)
6152 struct remote_state
*rs
= get_remote_state ();
6154 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6157 /* Avoid recursion, remote_trace_find calls us again. */
6158 rs
->remote_traceframe_number
= get_traceframe_number ();
6160 newnum
= target_trace_find (tfind_number
,
6161 get_traceframe_number (), 0, 0, NULL
);
6163 /* Should not happen. If it does, all bets are off. */
6164 if (newnum
!= get_traceframe_number ())
6165 warning (_("could not set remote traceframe"));
6169 remote_fetch_registers (struct target_ops
*ops
,
6170 struct regcache
*regcache
, int regnum
)
6172 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6175 set_remote_traceframe ();
6176 set_general_thread (inferior_ptid
);
6180 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6182 gdb_assert (reg
!= NULL
);
6184 /* If this register might be in the 'g' packet, try that first -
6185 we are likely to read more than one register. If this is the
6186 first 'g' packet, we might be overly optimistic about its
6187 contents, so fall back to 'p'. */
6188 if (reg
->in_g_packet
)
6190 fetch_registers_using_g (regcache
);
6191 if (reg
->in_g_packet
)
6195 if (fetch_register_using_p (regcache
, reg
))
6198 /* This register is not available. */
6199 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6204 fetch_registers_using_g (regcache
);
6206 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6207 if (!rsa
->regs
[i
].in_g_packet
)
6208 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6210 /* This register is not available. */
6211 regcache_raw_supply (regcache
, i
, NULL
);
6215 /* Prepare to store registers. Since we may send them all (using a
6216 'G' request), we have to read out the ones we don't want to change
6220 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6222 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6224 gdb_byte buf
[MAX_REGISTER_SIZE
];
6226 /* Make sure the entire registers array is valid. */
6227 switch (packet_support (PACKET_P
))
6229 case PACKET_DISABLE
:
6230 case PACKET_SUPPORT_UNKNOWN
:
6231 /* Make sure all the necessary registers are cached. */
6232 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6233 if (rsa
->regs
[i
].in_g_packet
)
6234 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6241 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6242 packet was not recognized. */
6245 store_register_using_P (const struct regcache
*regcache
,
6246 struct packet_reg
*reg
)
6248 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6249 struct remote_state
*rs
= get_remote_state ();
6250 /* Try storing a single register. */
6251 char *buf
= rs
->buf
;
6252 gdb_byte regp
[MAX_REGISTER_SIZE
];
6255 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
6258 if (reg
->pnum
== -1)
6261 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6262 p
= buf
+ strlen (buf
);
6263 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6264 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6266 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6268 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6273 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6274 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6275 case PACKET_UNKNOWN
:
6278 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6282 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6283 contents of the register cache buffer. FIXME: ignores errors. */
6286 store_registers_using_G (const struct regcache
*regcache
)
6288 struct remote_state
*rs
= get_remote_state ();
6289 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6293 /* Extract all the registers in the regcache copying them into a
6298 regs
= alloca (rsa
->sizeof_g_packet
);
6299 memset (regs
, 0, rsa
->sizeof_g_packet
);
6300 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6302 struct packet_reg
*r
= &rsa
->regs
[i
];
6305 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6309 /* Command describes registers byte by byte,
6310 each byte encoded as two hex characters. */
6313 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6315 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6317 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6318 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6319 error (_("Could not write registers; remote failure reply '%s'"),
6323 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6324 of the register cache buffer. FIXME: ignores errors. */
6327 remote_store_registers (struct target_ops
*ops
,
6328 struct regcache
*regcache
, int regnum
)
6330 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6333 set_remote_traceframe ();
6334 set_general_thread (inferior_ptid
);
6338 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6340 gdb_assert (reg
!= NULL
);
6342 /* Always prefer to store registers using the 'P' packet if
6343 possible; we often change only a small number of registers.
6344 Sometimes we change a larger number; we'd need help from a
6345 higher layer to know to use 'G'. */
6346 if (store_register_using_P (regcache
, reg
))
6349 /* For now, don't complain if we have no way to write the
6350 register. GDB loses track of unavailable registers too
6351 easily. Some day, this may be an error. We don't have
6352 any way to read the register, either... */
6353 if (!reg
->in_g_packet
)
6356 store_registers_using_G (regcache
);
6360 store_registers_using_G (regcache
);
6362 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6363 if (!rsa
->regs
[i
].in_g_packet
)
6364 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6365 /* See above for why we do not issue an error here. */
6370 /* Return the number of hex digits in num. */
6373 hexnumlen (ULONGEST num
)
6377 for (i
= 0; num
!= 0; i
++)
6383 /* Set BUF to the minimum number of hex digits representing NUM. */
6386 hexnumstr (char *buf
, ULONGEST num
)
6388 int len
= hexnumlen (num
);
6390 return hexnumnstr (buf
, num
, len
);
6394 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6397 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6403 for (i
= width
- 1; i
>= 0; i
--)
6405 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6412 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6415 remote_address_masked (CORE_ADDR addr
)
6417 unsigned int address_size
= remote_address_size
;
6419 /* If "remoteaddresssize" was not set, default to target address size. */
6421 address_size
= gdbarch_addr_bit (target_gdbarch ());
6423 if (address_size
> 0
6424 && address_size
< (sizeof (ULONGEST
) * 8))
6426 /* Only create a mask when that mask can safely be constructed
6427 in a ULONGEST variable. */
6430 mask
= (mask
<< address_size
) - 1;
6436 /* Determine whether the remote target supports binary downloading.
6437 This is accomplished by sending a no-op memory write of zero length
6438 to the target at the specified address. It does not suffice to send
6439 the whole packet, since many stubs strip the eighth bit and
6440 subsequently compute a wrong checksum, which causes real havoc with
6443 NOTE: This can still lose if the serial line is not eight-bit
6444 clean. In cases like this, the user should clear "remote
6448 check_binary_download (CORE_ADDR addr
)
6450 struct remote_state
*rs
= get_remote_state ();
6452 switch (packet_support (PACKET_X
))
6454 case PACKET_DISABLE
:
6458 case PACKET_SUPPORT_UNKNOWN
:
6464 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6466 p
+= hexnumstr (p
, (ULONGEST
) 0);
6470 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6471 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6473 if (rs
->buf
[0] == '\0')
6476 fprintf_unfiltered (gdb_stdlog
,
6477 "binary downloading NOT "
6478 "supported by target\n");
6479 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6484 fprintf_unfiltered (gdb_stdlog
,
6485 "binary downloading supported by target\n");
6486 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6493 /* Write memory data directly to the remote machine.
6494 This does not inform the data cache; the data cache uses this.
6495 HEADER is the starting part of the packet.
6496 MEMADDR is the address in the remote memory space.
6497 MYADDR is the address of the buffer in our space.
6498 LEN is the number of bytes.
6499 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6500 should send data as binary ('X'), or hex-encoded ('M').
6502 The function creates packet of the form
6503 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6505 where encoding of <DATA> is termined by PACKET_FORMAT.
6507 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6510 Return the transferred status, error or OK (an
6511 'enum target_xfer_status' value). Save the number of bytes
6512 transferred in *XFERED_LEN. Only transfer a single packet. */
6514 static enum target_xfer_status
6515 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6516 const gdb_byte
*myaddr
, ULONGEST len
,
6517 ULONGEST
*xfered_len
, char packet_format
,
6520 struct remote_state
*rs
= get_remote_state ();
6530 if (packet_format
!= 'X' && packet_format
!= 'M')
6531 internal_error (__FILE__
, __LINE__
,
6532 _("remote_write_bytes_aux: bad packet format"));
6535 return TARGET_XFER_EOF
;
6537 payload_size
= get_memory_write_packet_size ();
6539 /* The packet buffer will be large enough for the payload;
6540 get_memory_packet_size ensures this. */
6543 /* Compute the size of the actual payload by subtracting out the
6544 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6546 payload_size
-= strlen ("$,:#NN");
6548 /* The comma won't be used. */
6550 header_length
= strlen (header
);
6551 payload_size
-= header_length
;
6552 payload_size
-= hexnumlen (memaddr
);
6554 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6556 strcat (rs
->buf
, header
);
6557 p
= rs
->buf
+ strlen (header
);
6559 /* Compute a best guess of the number of bytes actually transfered. */
6560 if (packet_format
== 'X')
6562 /* Best guess at number of bytes that will fit. */
6563 todo
= min (len
, payload_size
);
6565 payload_size
-= hexnumlen (todo
);
6566 todo
= min (todo
, payload_size
);
6570 /* Num bytes that will fit. */
6571 todo
= min (len
, payload_size
/ 2);
6573 payload_size
-= hexnumlen (todo
);
6574 todo
= min (todo
, payload_size
/ 2);
6578 internal_error (__FILE__
, __LINE__
,
6579 _("minimum packet size too small to write data"));
6581 /* If we already need another packet, then try to align the end
6582 of this packet to a useful boundary. */
6583 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6584 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6586 /* Append "<memaddr>". */
6587 memaddr
= remote_address_masked (memaddr
);
6588 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6595 /* Append <len>. Retain the location/size of <len>. It may need to
6596 be adjusted once the packet body has been created. */
6598 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6606 /* Append the packet body. */
6607 if (packet_format
== 'X')
6609 /* Binary mode. Send target system values byte by byte, in
6610 increasing byte addresses. Only escape certain critical
6612 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6613 &nr_bytes
, payload_size
);
6615 /* If not all TODO bytes fit, then we'll need another packet. Make
6616 a second try to keep the end of the packet aligned. Don't do
6617 this if the packet is tiny. */
6618 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6622 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6624 if (new_nr_bytes
!= nr_bytes
)
6625 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6626 (gdb_byte
*) p
, &nr_bytes
,
6630 p
+= payload_length
;
6631 if (use_length
&& nr_bytes
< todo
)
6633 /* Escape chars have filled up the buffer prematurely,
6634 and we have actually sent fewer bytes than planned.
6635 Fix-up the length field of the packet. Use the same
6636 number of characters as before. */
6637 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6638 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6643 /* Normal mode: Send target system values byte by byte, in
6644 increasing byte addresses. Each byte is encoded as a two hex
6646 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6650 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6651 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6653 if (rs
->buf
[0] == 'E')
6654 return TARGET_XFER_E_IO
;
6656 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6657 fewer bytes than we'd planned. */
6658 *xfered_len
= (ULONGEST
) nr_bytes
;
6659 return TARGET_XFER_OK
;
6662 /* Write memory data directly to the remote machine.
6663 This does not inform the data cache; the data cache uses this.
6664 MEMADDR is the address in the remote memory space.
6665 MYADDR is the address of the buffer in our space.
6666 LEN is the number of bytes.
6668 Return the transferred status, error or OK (an
6669 'enum target_xfer_status' value). Save the number of bytes
6670 transferred in *XFERED_LEN. Only transfer a single packet. */
6672 static enum target_xfer_status
6673 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6674 ULONGEST
*xfered_len
)
6676 char *packet_format
= 0;
6678 /* Check whether the target supports binary download. */
6679 check_binary_download (memaddr
);
6681 switch (packet_support (PACKET_X
))
6684 packet_format
= "X";
6686 case PACKET_DISABLE
:
6687 packet_format
= "M";
6689 case PACKET_SUPPORT_UNKNOWN
:
6690 internal_error (__FILE__
, __LINE__
,
6691 _("remote_write_bytes: bad internal state"));
6693 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6696 return remote_write_bytes_aux (packet_format
,
6697 memaddr
, myaddr
, len
, xfered_len
,
6698 packet_format
[0], 1);
6701 /* Read memory data directly from the remote machine.
6702 This does not use the data cache; the data cache uses this.
6703 MEMADDR is the address in the remote memory space.
6704 MYADDR is the address of the buffer in our space.
6705 LEN is the number of bytes.
6707 Return the transferred status, error or OK (an
6708 'enum target_xfer_status' value). Save the number of bytes
6709 transferred in *XFERED_LEN. */
6711 static enum target_xfer_status
6712 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6713 ULONGEST
*xfered_len
)
6715 struct remote_state
*rs
= get_remote_state ();
6716 int max_buf_size
; /* Max size of packet output buffer. */
6721 max_buf_size
= get_memory_read_packet_size ();
6722 /* The packet buffer will be large enough for the payload;
6723 get_memory_packet_size ensures this. */
6725 /* Number if bytes that will fit. */
6726 todo
= min (len
, max_buf_size
/ 2);
6728 /* Construct "m"<memaddr>","<len>". */
6729 memaddr
= remote_address_masked (memaddr
);
6732 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6734 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6737 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6738 if (rs
->buf
[0] == 'E'
6739 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6740 && rs
->buf
[3] == '\0')
6741 return TARGET_XFER_E_IO
;
6742 /* Reply describes memory byte by byte, each byte encoded as two hex
6745 i
= hex2bin (p
, myaddr
, todo
);
6746 /* Return what we have. Let higher layers handle partial reads. */
6747 *xfered_len
= (ULONGEST
) i
;
6748 return TARGET_XFER_OK
;
6751 /* Using the set of read-only target sections of remote, read live
6754 For interface/parameters/return description see target.h,
6757 static enum target_xfer_status
6758 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
6759 ULONGEST memaddr
, ULONGEST len
,
6760 ULONGEST
*xfered_len
)
6762 struct target_section
*secp
;
6763 struct target_section_table
*table
;
6765 secp
= target_section_by_addr (ops
, memaddr
);
6767 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
6768 secp
->the_bfd_section
)
6771 struct target_section
*p
;
6772 ULONGEST memend
= memaddr
+ len
;
6774 table
= target_get_section_table (ops
);
6776 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
6778 if (memaddr
>= p
->addr
)
6780 if (memend
<= p
->endaddr
)
6782 /* Entire transfer is within this section. */
6783 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6786 else if (memaddr
>= p
->endaddr
)
6788 /* This section ends before the transfer starts. */
6793 /* This section overlaps the transfer. Just do half. */
6794 len
= p
->endaddr
- memaddr
;
6795 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6802 return TARGET_XFER_EOF
;
6805 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6806 first if the requested memory is unavailable in traceframe.
6807 Otherwise, fall back to remote_read_bytes_1. */
6809 static enum target_xfer_status
6810 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
6811 gdb_byte
*myaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
6816 if (get_traceframe_number () != -1)
6818 VEC(mem_range_s
) *available
;
6820 /* If we fail to get the set of available memory, then the
6821 target does not support querying traceframe info, and so we
6822 attempt reading from the traceframe anyway (assuming the
6823 target implements the old QTro packet then). */
6824 if (traceframe_available_memory (&available
, memaddr
, len
))
6826 struct cleanup
*old_chain
;
6828 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
6830 if (VEC_empty (mem_range_s
, available
)
6831 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
6833 enum target_xfer_status res
;
6835 /* Don't read into the traceframe's available
6837 if (!VEC_empty (mem_range_s
, available
))
6839 LONGEST oldlen
= len
;
6841 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
6842 gdb_assert (len
<= oldlen
);
6845 do_cleanups (old_chain
);
6847 /* This goes through the topmost target again. */
6848 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
6850 if (res
== TARGET_XFER_OK
)
6851 return TARGET_XFER_OK
;
6854 /* No use trying further, we know some memory starting
6855 at MEMADDR isn't available. */
6857 return TARGET_XFER_UNAVAILABLE
;
6861 /* Don't try to read more than how much is available, in
6862 case the target implements the deprecated QTro packet to
6863 cater for older GDBs (the target's knowledge of read-only
6864 sections may be outdated by now). */
6865 len
= VEC_index (mem_range_s
, available
, 0)->length
;
6867 do_cleanups (old_chain
);
6871 return remote_read_bytes_1 (memaddr
, myaddr
, len
, xfered_len
);
6876 /* Sends a packet with content determined by the printf format string
6877 FORMAT and the remaining arguments, then gets the reply. Returns
6878 whether the packet was a success, a failure, or unknown. */
6880 static enum packet_result
6881 remote_send_printf (const char *format
, ...)
6883 struct remote_state
*rs
= get_remote_state ();
6884 int max_size
= get_remote_packet_size ();
6887 va_start (ap
, format
);
6890 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6891 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6893 if (putpkt (rs
->buf
) < 0)
6894 error (_("Communication problem with target."));
6897 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6899 return packet_check_result (rs
->buf
);
6903 restore_remote_timeout (void *p
)
6905 int value
= *(int *)p
;
6907 remote_timeout
= value
;
6910 /* Flash writing can take quite some time. We'll set
6911 effectively infinite timeout for flash operations.
6912 In future, we'll need to decide on a better approach. */
6913 static const int remote_flash_timeout
= 1000;
6916 remote_flash_erase (struct target_ops
*ops
,
6917 ULONGEST address
, LONGEST length
)
6919 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6920 int saved_remote_timeout
= remote_timeout
;
6921 enum packet_result ret
;
6922 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6923 &saved_remote_timeout
);
6925 remote_timeout
= remote_flash_timeout
;
6927 ret
= remote_send_printf ("vFlashErase:%s,%s",
6928 phex (address
, addr_size
),
6932 case PACKET_UNKNOWN
:
6933 error (_("Remote target does not support flash erase"));
6935 error (_("Error erasing flash with vFlashErase packet"));
6940 do_cleanups (back_to
);
6943 static enum target_xfer_status
6944 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
6945 ULONGEST length
, ULONGEST
*xfered_len
,
6946 const gdb_byte
*data
)
6948 int saved_remote_timeout
= remote_timeout
;
6949 enum target_xfer_status ret
;
6950 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6951 &saved_remote_timeout
);
6953 remote_timeout
= remote_flash_timeout
;
6954 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
6956 do_cleanups (back_to
);
6962 remote_flash_done (struct target_ops
*ops
)
6964 int saved_remote_timeout
= remote_timeout
;
6966 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6967 &saved_remote_timeout
);
6969 remote_timeout
= remote_flash_timeout
;
6970 ret
= remote_send_printf ("vFlashDone");
6971 do_cleanups (back_to
);
6975 case PACKET_UNKNOWN
:
6976 error (_("Remote target does not support vFlashDone"));
6978 error (_("Error finishing flash operation"));
6985 remote_files_info (struct target_ops
*ignore
)
6987 puts_filtered ("Debugging a target over a serial line.\n");
6990 /* Stuff for dealing with the packets which are part of this protocol.
6991 See comment at top of file for details. */
6993 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
6994 error to higher layers. Called when a serial error is detected.
6995 The exception message is STRING, followed by a colon and a blank,
6996 the system error message for errno at function entry and final dot
6997 for output compatibility with throw_perror_with_name. */
7000 unpush_and_perror (const char *string
)
7002 int saved_errno
= errno
;
7004 remote_unpush_target ();
7005 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7006 safe_strerror (saved_errno
));
7009 /* Read a single character from the remote end. */
7012 readchar (int timeout
)
7015 struct remote_state
*rs
= get_remote_state ();
7017 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7022 switch ((enum serial_rc
) ch
)
7025 remote_unpush_target ();
7026 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7029 unpush_and_perror (_("Remote communication error. "
7030 "Target disconnected."));
7032 case SERIAL_TIMEOUT
:
7038 /* Wrapper for serial_write that closes the target and throws if
7042 remote_serial_write (const char *str
, int len
)
7044 struct remote_state
*rs
= get_remote_state ();
7046 if (serial_write (rs
->remote_desc
, str
, len
))
7048 unpush_and_perror (_("Remote communication error. "
7049 "Target disconnected."));
7053 /* Send the command in *BUF to the remote machine, and read the reply
7054 into *BUF. Report an error if we get an error reply. Resize
7055 *BUF using xrealloc if necessary to hold the result, and update
7059 remote_send (char **buf
,
7063 getpkt (buf
, sizeof_buf
, 0);
7065 if ((*buf
)[0] == 'E')
7066 error (_("Remote failure reply: %s"), *buf
);
7069 /* Return a pointer to an xmalloc'ed string representing an escaped
7070 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7071 etc. The caller is responsible for releasing the returned
7075 escape_buffer (const char *buf
, int n
)
7077 struct cleanup
*old_chain
;
7078 struct ui_file
*stb
;
7081 stb
= mem_fileopen ();
7082 old_chain
= make_cleanup_ui_file_delete (stb
);
7084 fputstrn_unfiltered (buf
, n
, 0, stb
);
7085 str
= ui_file_xstrdup (stb
, NULL
);
7086 do_cleanups (old_chain
);
7090 /* Display a null-terminated packet on stdout, for debugging, using C
7094 print_packet (char *buf
)
7096 puts_filtered ("\"");
7097 fputstr_filtered (buf
, '"', gdb_stdout
);
7098 puts_filtered ("\"");
7104 return putpkt_binary (buf
, strlen (buf
));
7107 /* Send a packet to the remote machine, with error checking. The data
7108 of the packet is in BUF. The string in BUF can be at most
7109 get_remote_packet_size () - 5 to account for the $, # and checksum,
7110 and for a possible /0 if we are debugging (remote_debug) and want
7111 to print the sent packet as a string. */
7114 putpkt_binary (char *buf
, int cnt
)
7116 struct remote_state
*rs
= get_remote_state ();
7118 unsigned char csum
= 0;
7119 char *buf2
= alloca (cnt
+ 6);
7126 /* Catch cases like trying to read memory or listing threads while
7127 we're waiting for a stop reply. The remote server wouldn't be
7128 ready to handle this request, so we'd hang and timeout. We don't
7129 have to worry about this in synchronous mode, because in that
7130 case it's not possible to issue a command while the target is
7131 running. This is not a problem in non-stop mode, because in that
7132 case, the stub is always ready to process serial input. */
7133 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7134 error (_("Cannot execute this command while the target is running."));
7136 /* We're sending out a new packet. Make sure we don't look at a
7137 stale cached response. */
7138 rs
->cached_wait_status
= 0;
7140 /* Copy the packet into buffer BUF2, encapsulating it
7141 and giving it a checksum. */
7146 for (i
= 0; i
< cnt
; i
++)
7152 *p
++ = tohex ((csum
>> 4) & 0xf);
7153 *p
++ = tohex (csum
& 0xf);
7155 /* Send it over and over until we get a positive ack. */
7159 int started_error_output
= 0;
7163 struct cleanup
*old_chain
;
7167 str
= escape_buffer (buf2
, p
- buf2
);
7168 old_chain
= make_cleanup (xfree
, str
);
7169 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7170 gdb_flush (gdb_stdlog
);
7171 do_cleanups (old_chain
);
7173 remote_serial_write (buf2
, p
- buf2
);
7175 /* If this is a no acks version of the remote protocol, send the
7176 packet and move on. */
7180 /* Read until either a timeout occurs (-2) or '+' is read.
7181 Handle any notification that arrives in the mean time. */
7184 ch
= readchar (remote_timeout
);
7192 case SERIAL_TIMEOUT
:
7195 if (started_error_output
)
7197 putchar_unfiltered ('\n');
7198 started_error_output
= 0;
7207 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7211 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7213 case SERIAL_TIMEOUT
:
7217 break; /* Retransmit buffer. */
7221 fprintf_unfiltered (gdb_stdlog
,
7222 "Packet instead of Ack, ignoring it\n");
7223 /* It's probably an old response sent because an ACK
7224 was lost. Gobble up the packet and ack it so it
7225 doesn't get retransmitted when we resend this
7228 remote_serial_write ("+", 1);
7229 continue; /* Now, go look for +. */
7236 /* If we got a notification, handle it, and go back to looking
7238 /* We've found the start of a notification. Now
7239 collect the data. */
7240 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7245 struct cleanup
*old_chain
;
7248 str
= escape_buffer (rs
->buf
, val
);
7249 old_chain
= make_cleanup (xfree
, str
);
7250 fprintf_unfiltered (gdb_stdlog
,
7251 " Notification received: %s\n",
7253 do_cleanups (old_chain
);
7255 handle_notification (rs
->notif_state
, rs
->buf
);
7256 /* We're in sync now, rewait for the ack. */
7263 if (!started_error_output
)
7265 started_error_output
= 1;
7266 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7268 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7269 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7278 if (!started_error_output
)
7280 started_error_output
= 1;
7281 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7283 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7287 break; /* Here to retransmit. */
7291 /* This is wrong. If doing a long backtrace, the user should be
7292 able to get out next time we call QUIT, without anything as
7293 violent as interrupt_query. If we want to provide a way out of
7294 here without getting to the next QUIT, it should be based on
7295 hitting ^C twice as in remote_wait. */
7306 /* Come here after finding the start of a frame when we expected an
7307 ack. Do our best to discard the rest of this packet. */
7316 c
= readchar (remote_timeout
);
7319 case SERIAL_TIMEOUT
:
7320 /* Nothing we can do. */
7323 /* Discard the two bytes of checksum and stop. */
7324 c
= readchar (remote_timeout
);
7326 c
= readchar (remote_timeout
);
7329 case '*': /* Run length encoding. */
7330 /* Discard the repeat count. */
7331 c
= readchar (remote_timeout
);
7336 /* A regular character. */
7342 /* Come here after finding the start of the frame. Collect the rest
7343 into *BUF, verifying the checksum, length, and handling run-length
7344 compression. NUL terminate the buffer. If there is not enough room,
7345 expand *BUF using xrealloc.
7347 Returns -1 on error, number of characters in buffer (ignoring the
7348 trailing NULL) on success. (could be extended to return one of the
7349 SERIAL status indications). */
7352 read_frame (char **buf_p
,
7359 struct remote_state
*rs
= get_remote_state ();
7366 c
= readchar (remote_timeout
);
7369 case SERIAL_TIMEOUT
:
7371 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7375 fputs_filtered ("Saw new packet start in middle of old one\n",
7377 return -1; /* Start a new packet, count retries. */
7380 unsigned char pktcsum
;
7386 check_0
= readchar (remote_timeout
);
7388 check_1
= readchar (remote_timeout
);
7390 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7393 fputs_filtered ("Timeout in checksum, retrying\n",
7397 else if (check_0
< 0 || check_1
< 0)
7400 fputs_filtered ("Communication error in checksum\n",
7405 /* Don't recompute the checksum; with no ack packets we
7406 don't have any way to indicate a packet retransmission
7411 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7412 if (csum
== pktcsum
)
7417 struct cleanup
*old_chain
;
7420 str
= escape_buffer (buf
, bc
);
7421 old_chain
= make_cleanup (xfree
, str
);
7422 fprintf_unfiltered (gdb_stdlog
,
7423 "Bad checksum, sentsum=0x%x, "
7424 "csum=0x%x, buf=%s\n",
7425 pktcsum
, csum
, str
);
7426 do_cleanups (old_chain
);
7428 /* Number of characters in buffer ignoring trailing
7432 case '*': /* Run length encoding. */
7437 c
= readchar (remote_timeout
);
7439 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7441 /* The character before ``*'' is repeated. */
7443 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7445 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7447 /* Make some more room in the buffer. */
7448 *sizeof_buf
+= repeat
;
7449 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7453 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7459 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7463 if (bc
>= *sizeof_buf
- 1)
7465 /* Make some more room in the buffer. */
7467 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7478 /* Read a packet from the remote machine, with error checking, and
7479 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7480 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7481 rather than timing out; this is used (in synchronous mode) to wait
7482 for a target that is is executing user code to stop. */
7483 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7484 don't have to change all the calls to getpkt to deal with the
7485 return value, because at the moment I don't know what the right
7486 thing to do it for those. */
7494 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7498 /* Read a packet from the remote machine, with error checking, and
7499 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7500 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7501 rather than timing out; this is used (in synchronous mode) to wait
7502 for a target that is is executing user code to stop. If FOREVER ==
7503 0, this function is allowed to time out gracefully and return an
7504 indication of this to the caller. Otherwise return the number of
7505 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7506 enough reason to return to the caller. *IS_NOTIF is an output
7507 boolean that indicates whether *BUF holds a notification or not
7508 (a regular packet). */
7511 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7512 int expecting_notif
, int *is_notif
)
7514 struct remote_state
*rs
= get_remote_state ();
7520 /* We're reading a new response. Make sure we don't look at a
7521 previously cached response. */
7522 rs
->cached_wait_status
= 0;
7524 strcpy (*buf
, "timeout");
7527 timeout
= watchdog
> 0 ? watchdog
: -1;
7528 else if (expecting_notif
)
7529 timeout
= 0; /* There should already be a char in the buffer. If
7532 timeout
= remote_timeout
;
7536 /* Process any number of notifications, and then return when
7540 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7542 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7544 /* This can loop forever if the remote side sends us
7545 characters continuously, but if it pauses, we'll get
7546 SERIAL_TIMEOUT from readchar because of timeout. Then
7547 we'll count that as a retry.
7549 Note that even when forever is set, we will only wait
7550 forever prior to the start of a packet. After that, we
7551 expect characters to arrive at a brisk pace. They should
7552 show up within remote_timeout intervals. */
7554 c
= readchar (timeout
);
7555 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7557 if (c
== SERIAL_TIMEOUT
)
7559 if (expecting_notif
)
7560 return -1; /* Don't complain, it's normal to not get
7561 anything in this case. */
7563 if (forever
) /* Watchdog went off? Kill the target. */
7566 remote_unpush_target ();
7567 throw_error (TARGET_CLOSE_ERROR
,
7568 _("Watchdog timeout has expired. "
7569 "Target detached."));
7572 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7576 /* We've found the start of a packet or notification.
7577 Now collect the data. */
7578 val
= read_frame (buf
, sizeof_buf
);
7583 remote_serial_write ("-", 1);
7586 if (tries
> MAX_TRIES
)
7588 /* We have tried hard enough, and just can't receive the
7589 packet/notification. Give up. */
7590 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7592 /* Skip the ack char if we're in no-ack mode. */
7593 if (!rs
->noack_mode
)
7594 remote_serial_write ("+", 1);
7598 /* If we got an ordinary packet, return that to our caller. */
7603 struct cleanup
*old_chain
;
7606 str
= escape_buffer (*buf
, val
);
7607 old_chain
= make_cleanup (xfree
, str
);
7608 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7609 do_cleanups (old_chain
);
7612 /* Skip the ack char if we're in no-ack mode. */
7613 if (!rs
->noack_mode
)
7614 remote_serial_write ("+", 1);
7615 if (is_notif
!= NULL
)
7620 /* If we got a notification, handle it, and go back to looking
7624 gdb_assert (c
== '%');
7628 struct cleanup
*old_chain
;
7631 str
= escape_buffer (*buf
, val
);
7632 old_chain
= make_cleanup (xfree
, str
);
7633 fprintf_unfiltered (gdb_stdlog
,
7634 " Notification received: %s\n",
7636 do_cleanups (old_chain
);
7638 if (is_notif
!= NULL
)
7641 handle_notification (rs
->notif_state
, *buf
);
7643 /* Notifications require no acknowledgement. */
7645 if (expecting_notif
)
7652 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7654 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7658 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7661 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7667 remote_kill (struct target_ops
*ops
)
7669 volatile struct gdb_exception ex
;
7671 /* Catch errors so the user can quit from gdb even when we
7672 aren't on speaking terms with the remote system. */
7673 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7679 if (ex
.error
== TARGET_CLOSE_ERROR
)
7681 /* If we got an (EOF) error that caused the target
7682 to go away, then we're done, that's what we wanted.
7683 "k" is susceptible to cause a premature EOF, given
7684 that the remote server isn't actually required to
7685 reply to "k", and it can happen that it doesn't
7686 even get to reply ACK to the "k". */
7690 /* Otherwise, something went wrong. We didn't actually kill
7691 the target. Just propagate the exception, and let the
7692 user or higher layers decide what to do. */
7693 throw_exception (ex
);
7696 /* We've killed the remote end, we get to mourn it. Since this is
7697 target remote, single-process, mourning the inferior also
7698 unpushes remote_ops. */
7699 target_mourn_inferior ();
7703 remote_vkill (int pid
, struct remote_state
*rs
)
7705 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
7708 /* Tell the remote target to detach. */
7709 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7711 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7713 switch (packet_ok (rs
->buf
,
7714 &remote_protocol_packets
[PACKET_vKill
]))
7720 case PACKET_UNKNOWN
:
7723 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7728 extended_remote_kill (struct target_ops
*ops
)
7731 int pid
= ptid_get_pid (inferior_ptid
);
7732 struct remote_state
*rs
= get_remote_state ();
7734 res
= remote_vkill (pid
, rs
);
7735 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7737 /* Don't try 'k' on a multi-process aware stub -- it has no way
7738 to specify the pid. */
7742 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7743 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7746 /* Don't wait for it to die. I'm not really sure it matters whether
7747 we do or not. For the existing stubs, kill is a noop. */
7753 error (_("Can't kill process"));
7755 target_mourn_inferior ();
7759 remote_mourn (struct target_ops
*ops
)
7761 remote_mourn_1 (ops
);
7764 /* Worker function for remote_mourn. */
7766 remote_mourn_1 (struct target_ops
*target
)
7768 unpush_target (target
);
7770 /* remote_close takes care of doing most of the clean up. */
7771 generic_mourn_inferior ();
7775 extended_remote_mourn_1 (struct target_ops
*target
)
7777 struct remote_state
*rs
= get_remote_state ();
7779 /* In case we got here due to an error, but we're going to stay
7781 rs
->waiting_for_stop_reply
= 0;
7783 /* If the current general thread belonged to the process we just
7784 detached from or has exited, the remote side current general
7785 thread becomes undefined. Considering a case like this:
7787 - We just got here due to a detach.
7788 - The process that we're detaching from happens to immediately
7789 report a global breakpoint being hit in non-stop mode, in the
7790 same thread we had selected before.
7791 - GDB attaches to this process again.
7792 - This event happens to be the next event we handle.
7794 GDB would consider that the current general thread didn't need to
7795 be set on the stub side (with Hg), since for all it knew,
7796 GENERAL_THREAD hadn't changed.
7798 Notice that although in all-stop mode, the remote server always
7799 sets the current thread to the thread reporting the stop event,
7800 that doesn't happen in non-stop mode; in non-stop, the stub *must
7801 not* change the current thread when reporting a breakpoint hit,
7802 due to the decoupling of event reporting and event handling.
7804 To keep things simple, we always invalidate our notion of the
7806 record_currthread (rs
, minus_one_ptid
);
7808 /* Unlike "target remote", we do not want to unpush the target; then
7809 the next time the user says "run", we won't be connected. */
7811 /* Call common code to mark the inferior as not running. */
7812 generic_mourn_inferior ();
7814 if (!have_inferiors ())
7816 if (!remote_multi_process_p (rs
))
7818 /* Check whether the target is running now - some remote stubs
7819 automatically restart after kill. */
7821 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7823 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7825 /* Assume that the target has been restarted. Set
7826 inferior_ptid so that bits of core GDB realizes
7827 there's something here, e.g., so that the user can
7828 say "kill" again. */
7829 inferior_ptid
= magic_null_ptid
;
7836 extended_remote_mourn (struct target_ops
*ops
)
7838 extended_remote_mourn_1 (ops
);
7842 extended_remote_supports_disable_randomization (struct target_ops
*self
)
7844 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
7848 extended_remote_disable_randomization (int val
)
7850 struct remote_state
*rs
= get_remote_state ();
7853 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7856 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7858 error (_("Target does not support QDisableRandomization."));
7859 if (strcmp (reply
, "OK") != 0)
7860 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7864 extended_remote_run (char *args
)
7866 struct remote_state
*rs
= get_remote_state ();
7869 /* If the user has disabled vRun support, or we have detected that
7870 support is not available, do not try it. */
7871 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
7874 strcpy (rs
->buf
, "vRun;");
7875 len
= strlen (rs
->buf
);
7877 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7878 error (_("Remote file name too long for run packet"));
7879 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
7880 strlen (remote_exec_file
));
7882 gdb_assert (args
!= NULL
);
7885 struct cleanup
*back_to
;
7889 argv
= gdb_buildargv (args
);
7890 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7891 for (i
= 0; argv
[i
] != NULL
; i
++)
7893 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7894 error (_("Argument list too long for run packet"));
7895 rs
->buf
[len
++] = ';';
7896 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
7899 do_cleanups (back_to
);
7902 rs
->buf
[len
++] = '\0';
7905 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7907 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
7910 /* We have a wait response. All is well. */
7912 case PACKET_UNKNOWN
:
7915 if (remote_exec_file
[0] == '\0')
7916 error (_("Running the default executable on the remote target failed; "
7917 "try \"set remote exec-file\"?"));
7919 error (_("Running \"%s\" on the remote target failed"),
7922 gdb_assert_not_reached (_("bad switch"));
7926 /* In the extended protocol we want to be able to do things like
7927 "run" and have them basically work as expected. So we need
7928 a special create_inferior function. We support changing the
7929 executable file and the command line arguments, but not the
7933 extended_remote_create_inferior (struct target_ops
*ops
,
7934 char *exec_file
, char *args
,
7935 char **env
, int from_tty
)
7939 struct remote_state
*rs
= get_remote_state ();
7941 /* If running asynchronously, register the target file descriptor
7942 with the event loop. */
7943 if (target_can_async_p ())
7944 target_async (inferior_event_handler
, 0);
7946 /* Disable address space randomization if requested (and supported). */
7947 if (extended_remote_supports_disable_randomization (ops
))
7948 extended_remote_disable_randomization (disable_randomization
);
7950 /* Now restart the remote server. */
7951 run_worked
= extended_remote_run (args
) != -1;
7954 /* vRun was not supported. Fail if we need it to do what the
7956 if (remote_exec_file
[0])
7957 error (_("Remote target does not support \"set remote exec-file\""));
7959 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7961 /* Fall back to "R". */
7962 extended_remote_restart ();
7965 if (!have_inferiors ())
7967 /* Clean up from the last time we ran, before we mark the target
7968 running again. This will mark breakpoints uninserted, and
7969 get_offsets may insert breakpoints. */
7970 init_thread_list ();
7971 init_wait_for_inferior ();
7974 /* vRun's success return is a stop reply. */
7975 stop_reply
= run_worked
? rs
->buf
: NULL
;
7976 add_current_inferior_and_thread (stop_reply
);
7978 /* Get updated offsets, if the stub uses qOffsets. */
7983 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7984 the list of conditions (in agent expression bytecode format), if any, the
7985 target needs to evaluate. The output is placed into the packet buffer
7986 started from BUF and ended at BUF_END. */
7989 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7990 struct bp_target_info
*bp_tgt
, char *buf
,
7993 struct agent_expr
*aexpr
= NULL
;
7996 char *buf_start
= buf
;
7998 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8001 buf
+= strlen (buf
);
8002 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8005 /* Send conditions to the target and free the vector. */
8007 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8010 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8011 buf
+= strlen (buf
);
8012 for (i
= 0; i
< aexpr
->len
; ++i
)
8013 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8020 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8021 struct bp_target_info
*bp_tgt
, char *buf
)
8023 struct agent_expr
*aexpr
= NULL
;
8026 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8029 buf
+= strlen (buf
);
8031 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8032 buf
+= strlen (buf
);
8034 /* Concatenate all the agent expressions that are commands into the
8037 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8040 sprintf (buf
, "X%x,", aexpr
->len
);
8041 buf
+= strlen (buf
);
8042 for (i
= 0; i
< aexpr
->len
; ++i
)
8043 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8048 /* Insert a breakpoint. On targets that have software breakpoint
8049 support, we ask the remote target to do the work; on targets
8050 which don't, we insert a traditional memory breakpoint. */
8053 remote_insert_breakpoint (struct target_ops
*ops
,
8054 struct gdbarch
*gdbarch
,
8055 struct bp_target_info
*bp_tgt
)
8057 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8058 If it succeeds, then set the support to PACKET_ENABLE. If it
8059 fails, and the user has explicitly requested the Z support then
8060 report an error, otherwise, mark it disabled and go on. */
8062 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8064 CORE_ADDR addr
= bp_tgt
->placed_address
;
8065 struct remote_state
*rs
;
8068 struct condition_list
*cond
= NULL
;
8070 /* Make sure the remote is pointing at the right process, if
8072 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8073 set_general_process ();
8075 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8077 rs
= get_remote_state ();
8079 endbuf
= rs
->buf
+ get_remote_packet_size ();
8084 addr
= (ULONGEST
) remote_address_masked (addr
);
8085 p
+= hexnumstr (p
, addr
);
8086 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8088 if (remote_supports_cond_breakpoints (ops
))
8089 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8091 if (remote_can_run_breakpoint_commands (ops
))
8092 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8095 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8097 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8102 bp_tgt
->placed_address
= addr
;
8103 bp_tgt
->placed_size
= bpsize
;
8105 case PACKET_UNKNOWN
:
8110 /* If this breakpoint has target-side commands but this stub doesn't
8111 support Z0 packets, throw error. */
8112 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8113 throw_error (NOT_SUPPORTED_ERROR
, _("\
8114 Target doesn't support breakpoints that have target side commands."));
8116 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8120 remote_remove_breakpoint (struct target_ops
*ops
,
8121 struct gdbarch
*gdbarch
,
8122 struct bp_target_info
*bp_tgt
)
8124 CORE_ADDR addr
= bp_tgt
->placed_address
;
8125 struct remote_state
*rs
= get_remote_state ();
8127 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8130 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8132 /* Make sure the remote is pointing at the right process, if
8134 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8135 set_general_process ();
8141 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8142 p
+= hexnumstr (p
, addr
);
8143 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8146 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8148 return (rs
->buf
[0] == 'E');
8151 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8155 watchpoint_to_Z_packet (int type
)
8160 return Z_PACKET_WRITE_WP
;
8163 return Z_PACKET_READ_WP
;
8166 return Z_PACKET_ACCESS_WP
;
8169 internal_error (__FILE__
, __LINE__
,
8170 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8175 remote_insert_watchpoint (struct target_ops
*self
,
8176 CORE_ADDR addr
, int len
, int type
,
8177 struct expression
*cond
)
8179 struct remote_state
*rs
= get_remote_state ();
8180 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8182 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8184 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8187 /* Make sure the remote is pointing at the right process, if
8189 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8190 set_general_process ();
8192 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8193 p
= strchr (rs
->buf
, '\0');
8194 addr
= remote_address_masked (addr
);
8195 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8196 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8199 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8201 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8205 case PACKET_UNKNOWN
:
8210 internal_error (__FILE__
, __LINE__
,
8211 _("remote_insert_watchpoint: reached end of function"));
8215 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8216 CORE_ADDR start
, int length
)
8218 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8220 return diff
< length
;
8225 remote_remove_watchpoint (struct target_ops
*self
,
8226 CORE_ADDR addr
, int len
, int type
,
8227 struct expression
*cond
)
8229 struct remote_state
*rs
= get_remote_state ();
8230 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8232 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8234 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8237 /* Make sure the remote is pointing at the right process, if
8239 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8240 set_general_process ();
8242 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8243 p
= strchr (rs
->buf
, '\0');
8244 addr
= remote_address_masked (addr
);
8245 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8246 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8248 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8250 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8253 case PACKET_UNKNOWN
:
8258 internal_error (__FILE__
, __LINE__
,
8259 _("remote_remove_watchpoint: reached end of function"));
8263 int remote_hw_watchpoint_limit
= -1;
8264 int remote_hw_watchpoint_length_limit
= -1;
8265 int remote_hw_breakpoint_limit
= -1;
8268 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8269 CORE_ADDR addr
, int len
)
8271 if (remote_hw_watchpoint_length_limit
== 0)
8273 else if (remote_hw_watchpoint_length_limit
< 0)
8275 else if (len
<= remote_hw_watchpoint_length_limit
)
8282 remote_check_watch_resources (struct target_ops
*self
,
8283 int type
, int cnt
, int ot
)
8285 if (type
== bp_hardware_breakpoint
)
8287 if (remote_hw_breakpoint_limit
== 0)
8289 else if (remote_hw_breakpoint_limit
< 0)
8291 else if (cnt
<= remote_hw_breakpoint_limit
)
8296 if (remote_hw_watchpoint_limit
== 0)
8298 else if (remote_hw_watchpoint_limit
< 0)
8302 else if (cnt
<= remote_hw_watchpoint_limit
)
8309 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8311 struct remote_state
*rs
= get_remote_state ();
8313 return rs
->remote_stopped_by_watchpoint_p
;
8317 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8319 struct remote_state
*rs
= get_remote_state ();
8322 if (remote_stopped_by_watchpoint (target
))
8324 *addr_p
= rs
->remote_watch_data_address
;
8333 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8334 struct bp_target_info
*bp_tgt
)
8337 struct remote_state
*rs
;
8341 /* The length field should be set to the size of a breakpoint
8342 instruction, even though we aren't inserting one ourselves. */
8344 gdbarch_remote_breakpoint_from_pc
8345 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8347 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8350 /* Make sure the remote is pointing at the right process, if
8352 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8353 set_general_process ();
8355 rs
= get_remote_state ();
8357 endbuf
= rs
->buf
+ get_remote_packet_size ();
8363 addr
= remote_address_masked (bp_tgt
->placed_address
);
8364 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8365 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8367 if (remote_supports_cond_breakpoints (self
))
8368 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8370 if (remote_can_run_breakpoint_commands (self
))
8371 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8374 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8376 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8379 if (rs
->buf
[1] == '.')
8381 message
= strchr (rs
->buf
+ 2, '.');
8383 error (_("Remote failure reply: %s"), message
+ 1);
8386 case PACKET_UNKNOWN
:
8391 internal_error (__FILE__
, __LINE__
,
8392 _("remote_insert_hw_breakpoint: reached end of function"));
8397 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8398 struct bp_target_info
*bp_tgt
)
8401 struct remote_state
*rs
= get_remote_state ();
8403 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8405 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8408 /* Make sure the remote is pointing at the right process, if
8410 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8411 set_general_process ();
8417 addr
= remote_address_masked (bp_tgt
->placed_address
);
8418 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8419 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8422 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8424 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8427 case PACKET_UNKNOWN
:
8432 internal_error (__FILE__
, __LINE__
,
8433 _("remote_remove_hw_breakpoint: reached end of function"));
8436 /* Verify memory using the "qCRC:" request. */
8439 remote_verify_memory (struct target_ops
*ops
,
8440 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8442 struct remote_state
*rs
= get_remote_state ();
8443 unsigned long host_crc
, target_crc
;
8446 /* It doesn't make sense to use qCRC if the remote target is
8447 connected but not running. */
8448 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
8450 enum packet_result result
;
8452 /* Make sure the remote is pointing at the right process. */
8453 set_general_process ();
8455 /* FIXME: assumes lma can fit into long. */
8456 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8457 (long) lma
, (long) size
);
8460 /* Be clever; compute the host_crc before waiting for target
8462 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8464 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8466 result
= packet_ok (rs
->buf
,
8467 &remote_protocol_packets
[PACKET_qCRC
]);
8468 if (result
== PACKET_ERROR
)
8470 else if (result
== PACKET_OK
)
8472 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8473 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8475 return (host_crc
== target_crc
);
8479 return simple_verify_memory (ops
, data
, lma
, size
);
8482 /* compare-sections command
8484 With no arguments, compares each loadable section in the exec bfd
8485 with the same memory range on the target, and reports mismatches.
8486 Useful for verifying the image on the target against the exec file. */
8489 compare_sections_command (char *args
, int from_tty
)
8492 struct cleanup
*old_chain
;
8494 const char *sectname
;
8503 error (_("command cannot be used without an exec file"));
8505 /* Make sure the remote is pointing at the right process. */
8506 set_general_process ();
8508 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
8514 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8516 if (!(s
->flags
& SEC_LOAD
))
8517 continue; /* Skip non-loadable section. */
8519 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
8520 continue; /* Skip writeable sections */
8522 size
= bfd_get_section_size (s
);
8524 continue; /* Skip zero-length section. */
8526 sectname
= bfd_get_section_name (exec_bfd
, s
);
8527 if (args
&& strcmp (args
, sectname
) != 0)
8528 continue; /* Not the section selected by user. */
8530 matched
= 1; /* Do this section. */
8533 sectdata
= xmalloc (size
);
8534 old_chain
= make_cleanup (xfree
, sectdata
);
8535 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8537 res
= target_verify_memory (sectdata
, lma
, size
);
8540 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8541 paddress (target_gdbarch (), lma
),
8542 paddress (target_gdbarch (), lma
+ size
));
8544 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8545 paddress (target_gdbarch (), lma
),
8546 paddress (target_gdbarch (), lma
+ size
));
8548 printf_filtered ("matched.\n");
8551 printf_filtered ("MIS-MATCHED!\n");
8555 do_cleanups (old_chain
);
8558 warning (_("One or more sections of the target image does not match\n\
8559 the loaded file\n"));
8560 if (args
&& !matched
)
8561 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8564 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8565 into remote target. The number of bytes written to the remote
8566 target is returned, or -1 for error. */
8568 static enum target_xfer_status
8569 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8570 const char *annex
, const gdb_byte
*writebuf
,
8571 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8572 struct packet_config
*packet
)
8576 struct remote_state
*rs
= get_remote_state ();
8577 int max_size
= get_memory_write_packet_size ();
8579 if (packet
->support
== PACKET_DISABLE
)
8580 return TARGET_XFER_E_IO
;
8582 /* Insert header. */
8583 i
= snprintf (rs
->buf
, max_size
,
8584 "qXfer:%s:write:%s:%s:",
8585 object_name
, annex
? annex
: "",
8586 phex_nz (offset
, sizeof offset
));
8587 max_size
-= (i
+ 1);
8589 /* Escape as much data as fits into rs->buf. */
8590 buf_len
= remote_escape_output
8591 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8593 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8594 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8595 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8596 return TARGET_XFER_E_IO
;
8598 unpack_varlen_hex (rs
->buf
, &n
);
8601 return TARGET_XFER_OK
;
8604 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8605 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8606 number of bytes read is returned, or 0 for EOF, or -1 for error.
8607 The number of bytes read may be less than LEN without indicating an
8608 EOF. PACKET is checked and updated to indicate whether the remote
8609 target supports this object. */
8611 static enum target_xfer_status
8612 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8614 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8615 ULONGEST
*xfered_len
,
8616 struct packet_config
*packet
)
8618 struct remote_state
*rs
= get_remote_state ();
8619 LONGEST i
, n
, packet_len
;
8621 if (packet
->support
== PACKET_DISABLE
)
8622 return TARGET_XFER_E_IO
;
8624 /* Check whether we've cached an end-of-object packet that matches
8626 if (rs
->finished_object
)
8628 if (strcmp (object_name
, rs
->finished_object
) == 0
8629 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8630 && offset
== rs
->finished_offset
)
8631 return TARGET_XFER_EOF
;
8634 /* Otherwise, we're now reading something different. Discard
8636 xfree (rs
->finished_object
);
8637 xfree (rs
->finished_annex
);
8638 rs
->finished_object
= NULL
;
8639 rs
->finished_annex
= NULL
;
8642 /* Request only enough to fit in a single packet. The actual data
8643 may not, since we don't know how much of it will need to be escaped;
8644 the target is free to respond with slightly less data. We subtract
8645 five to account for the response type and the protocol frame. */
8646 n
= min (get_remote_packet_size () - 5, len
);
8647 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8648 object_name
, annex
? annex
: "",
8649 phex_nz (offset
, sizeof offset
),
8650 phex_nz (n
, sizeof n
));
8651 i
= putpkt (rs
->buf
);
8653 return TARGET_XFER_E_IO
;
8656 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8657 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8658 return TARGET_XFER_E_IO
;
8660 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8661 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8663 /* 'm' means there is (or at least might be) more data after this
8664 batch. That does not make sense unless there's at least one byte
8665 of data in this reply. */
8666 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8667 error (_("Remote qXfer reply contained no data."));
8669 /* Got some data. */
8670 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8671 packet_len
- 1, readbuf
, n
);
8673 /* 'l' is an EOF marker, possibly including a final block of data,
8674 or possibly empty. If we have the final block of a non-empty
8675 object, record this fact to bypass a subsequent partial read. */
8676 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8678 rs
->finished_object
= xstrdup (object_name
);
8679 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8680 rs
->finished_offset
= offset
+ i
;
8684 return TARGET_XFER_EOF
;
8688 return TARGET_XFER_OK
;
8692 static enum target_xfer_status
8693 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8694 const char *annex
, gdb_byte
*readbuf
,
8695 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8696 ULONGEST
*xfered_len
)
8698 struct remote_state
*rs
;
8703 set_remote_traceframe ();
8704 set_general_thread (inferior_ptid
);
8706 rs
= get_remote_state ();
8708 /* Handle memory using the standard memory routines. */
8709 if (object
== TARGET_OBJECT_MEMORY
)
8711 /* If the remote target is connected but not running, we should
8712 pass this request down to a lower stratum (e.g. the executable
8714 if (!target_has_execution
)
8715 return TARGET_XFER_EOF
;
8717 if (writebuf
!= NULL
)
8718 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8720 return remote_read_bytes (ops
, offset
, readbuf
, len
, xfered_len
);
8723 /* Handle SPU memory using qxfer packets. */
8724 if (object
== TARGET_OBJECT_SPU
)
8727 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8728 xfered_len
, &remote_protocol_packets
8729 [PACKET_qXfer_spu_read
]);
8731 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8732 xfered_len
, &remote_protocol_packets
8733 [PACKET_qXfer_spu_write
]);
8736 /* Handle extra signal info using qxfer packets. */
8737 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8740 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8741 xfered_len
, &remote_protocol_packets
8742 [PACKET_qXfer_siginfo_read
]);
8744 return remote_write_qxfer (ops
, "siginfo", annex
,
8745 writebuf
, offset
, len
, xfered_len
,
8746 &remote_protocol_packets
8747 [PACKET_qXfer_siginfo_write
]);
8750 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8753 return remote_read_qxfer (ops
, "statictrace", annex
,
8754 readbuf
, offset
, len
, xfered_len
,
8755 &remote_protocol_packets
8756 [PACKET_qXfer_statictrace_read
]);
8758 return TARGET_XFER_E_IO
;
8761 /* Only handle flash writes. */
8762 if (writebuf
!= NULL
)
8768 case TARGET_OBJECT_FLASH
:
8769 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8773 return TARGET_XFER_E_IO
;
8777 /* Map pre-existing objects onto letters. DO NOT do this for new
8778 objects!!! Instead specify new query packets. */
8781 case TARGET_OBJECT_AVR
:
8785 case TARGET_OBJECT_AUXV
:
8786 gdb_assert (annex
== NULL
);
8787 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8789 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8791 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8792 return remote_read_qxfer
8793 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
8794 &remote_protocol_packets
[PACKET_qXfer_features
]);
8796 case TARGET_OBJECT_LIBRARIES
:
8797 return remote_read_qxfer
8798 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
8799 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8801 case TARGET_OBJECT_LIBRARIES_SVR4
:
8802 return remote_read_qxfer
8803 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
8804 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8806 case TARGET_OBJECT_MEMORY_MAP
:
8807 gdb_assert (annex
== NULL
);
8808 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8810 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8812 case TARGET_OBJECT_OSDATA
:
8813 /* Should only get here if we're connected. */
8814 gdb_assert (rs
->remote_desc
);
8815 return remote_read_qxfer
8816 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
8817 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8819 case TARGET_OBJECT_THREADS
:
8820 gdb_assert (annex
== NULL
);
8821 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8823 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8825 case TARGET_OBJECT_TRACEFRAME_INFO
:
8826 gdb_assert (annex
== NULL
);
8827 return remote_read_qxfer
8828 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
8829 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8831 case TARGET_OBJECT_FDPIC
:
8832 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8834 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8836 case TARGET_OBJECT_OPENVMS_UIB
:
8837 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8839 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8841 case TARGET_OBJECT_BTRACE
:
8842 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8844 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8847 return TARGET_XFER_E_IO
;
8850 /* Note: a zero OFFSET and LEN can be used to query the minimum
8852 if (offset
== 0 && len
== 0)
8853 return (get_remote_packet_size ());
8854 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8855 large enough let the caller deal with it. */
8856 if (len
< get_remote_packet_size ())
8857 return TARGET_XFER_E_IO
;
8858 len
= get_remote_packet_size ();
8860 /* Except for querying the minimum buffer size, target must be open. */
8861 if (!rs
->remote_desc
)
8862 error (_("remote query is only available after target open"));
8864 gdb_assert (annex
!= NULL
);
8865 gdb_assert (readbuf
!= NULL
);
8871 /* We used one buffer char for the remote protocol q command and
8872 another for the query type. As the remote protocol encapsulation
8873 uses 4 chars plus one extra in case we are debugging
8874 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8877 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8879 /* Bad caller may have sent forbidden characters. */
8880 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8885 gdb_assert (annex
[i
] == '\0');
8887 i
= putpkt (rs
->buf
);
8889 return TARGET_XFER_E_IO
;
8891 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8892 strcpy ((char *) readbuf
, rs
->buf
);
8894 *xfered_len
= strlen ((char *) readbuf
);
8895 return TARGET_XFER_OK
;
8899 remote_search_memory (struct target_ops
* ops
,
8900 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8901 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8902 CORE_ADDR
*found_addrp
)
8904 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8905 struct remote_state
*rs
= get_remote_state ();
8906 int max_size
= get_memory_write_packet_size ();
8907 struct packet_config
*packet
=
8908 &remote_protocol_packets
[PACKET_qSearch_memory
];
8909 /* Number of packet bytes used to encode the pattern;
8910 this could be more than PATTERN_LEN due to escape characters. */
8911 int escaped_pattern_len
;
8912 /* Amount of pattern that was encodable in the packet. */
8913 int used_pattern_len
;
8916 ULONGEST found_addr
;
8918 /* Don't go to the target if we don't have to.
8919 This is done before checking packet->support to avoid the possibility that
8920 a success for this edge case means the facility works in general. */
8921 if (pattern_len
> search_space_len
)
8923 if (pattern_len
== 0)
8925 *found_addrp
= start_addr
;
8929 /* If we already know the packet isn't supported, fall back to the simple
8930 way of searching memory. */
8932 if (packet_config_support (packet
) == PACKET_DISABLE
)
8934 /* Target doesn't provided special support, fall back and use the
8935 standard support (copy memory and do the search here). */
8936 return simple_search_memory (ops
, start_addr
, search_space_len
,
8937 pattern
, pattern_len
, found_addrp
);
8940 /* Make sure the remote is pointing at the right process. */
8941 set_general_process ();
8943 /* Insert header. */
8944 i
= snprintf (rs
->buf
, max_size
,
8945 "qSearch:memory:%s;%s;",
8946 phex_nz (start_addr
, addr_size
),
8947 phex_nz (search_space_len
, sizeof (search_space_len
)));
8948 max_size
-= (i
+ 1);
8950 /* Escape as much data as fits into rs->buf. */
8951 escaped_pattern_len
=
8952 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
8953 &used_pattern_len
, max_size
);
8955 /* Bail if the pattern is too large. */
8956 if (used_pattern_len
!= pattern_len
)
8957 error (_("Pattern is too large to transmit to remote target."));
8959 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8960 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8961 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8963 /* The request may not have worked because the command is not
8964 supported. If so, fall back to the simple way. */
8965 if (packet
->support
== PACKET_DISABLE
)
8967 return simple_search_memory (ops
, start_addr
, search_space_len
,
8968 pattern
, pattern_len
, found_addrp
);
8973 if (rs
->buf
[0] == '0')
8975 else if (rs
->buf
[0] == '1')
8978 if (rs
->buf
[1] != ',')
8979 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8980 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8981 *found_addrp
= found_addr
;
8984 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8990 remote_rcmd (struct target_ops
*self
, char *command
,
8991 struct ui_file
*outbuf
)
8993 struct remote_state
*rs
= get_remote_state ();
8996 if (!rs
->remote_desc
)
8997 error (_("remote rcmd is only available after target open"));
8999 /* Send a NULL command across as an empty command. */
9000 if (command
== NULL
)
9003 /* The query prefix. */
9004 strcpy (rs
->buf
, "qRcmd,");
9005 p
= strchr (rs
->buf
, '\0');
9007 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9008 > get_remote_packet_size ())
9009 error (_("\"monitor\" command ``%s'' is too long."), command
);
9011 /* Encode the actual command. */
9012 bin2hex ((gdb_byte
*) command
, p
, strlen (command
));
9014 if (putpkt (rs
->buf
) < 0)
9015 error (_("Communication problem with target."));
9017 /* get/display the response */
9022 /* XXX - see also remote_get_noisy_reply(). */
9023 QUIT
; /* Allow user to bail out with ^C. */
9025 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9027 /* Timeout. Continue to (try to) read responses.
9028 This is better than stopping with an error, assuming the stub
9029 is still executing the (long) monitor command.
9030 If needed, the user can interrupt gdb using C-c, obtaining
9031 an effect similar to stop on timeout. */
9036 error (_("Target does not support this command."));
9037 if (buf
[0] == 'O' && buf
[1] != 'K')
9039 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9042 if (strcmp (buf
, "OK") == 0)
9044 if (strlen (buf
) == 3 && buf
[0] == 'E'
9045 && isdigit (buf
[1]) && isdigit (buf
[2]))
9047 error (_("Protocol error with Rcmd"));
9049 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9051 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9053 fputc_unfiltered (c
, outbuf
);
9059 static VEC(mem_region_s
) *
9060 remote_memory_map (struct target_ops
*ops
)
9062 VEC(mem_region_s
) *result
= NULL
;
9063 char *text
= target_read_stralloc (¤t_target
,
9064 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9068 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9070 result
= parse_memory_map (text
);
9071 do_cleanups (back_to
);
9078 packet_command (char *args
, int from_tty
)
9080 struct remote_state
*rs
= get_remote_state ();
9082 if (!rs
->remote_desc
)
9083 error (_("command can only be used with remote target"));
9086 error (_("remote-packet command requires packet text as argument"));
9088 puts_filtered ("sending: ");
9089 print_packet (args
);
9090 puts_filtered ("\n");
9093 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9094 puts_filtered ("received: ");
9095 print_packet (rs
->buf
);
9096 puts_filtered ("\n");
9100 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9102 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9104 static void threadset_test_cmd (char *cmd
, int tty
);
9106 static void threadalive_test (char *cmd
, int tty
);
9108 static void threadlist_test_cmd (char *cmd
, int tty
);
9110 int get_and_display_threadinfo (threadref
*ref
);
9112 static void threadinfo_test_cmd (char *cmd
, int tty
);
9114 static int thread_display_step (threadref
*ref
, void *context
);
9116 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9118 static void init_remote_threadtests (void);
9120 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9123 threadset_test_cmd (char *cmd
, int tty
)
9125 int sample_thread
= SAMPLE_THREAD
;
9127 printf_filtered (_("Remote threadset test\n"));
9128 set_general_thread (sample_thread
);
9133 threadalive_test (char *cmd
, int tty
)
9135 int sample_thread
= SAMPLE_THREAD
;
9136 int pid
= ptid_get_pid (inferior_ptid
);
9137 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
9139 if (remote_thread_alive (ptid
))
9140 printf_filtered ("PASS: Thread alive test\n");
9142 printf_filtered ("FAIL: Thread alive test\n");
9145 void output_threadid (char *title
, threadref
*ref
);
9148 output_threadid (char *title
, threadref
*ref
)
9152 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9154 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9158 threadlist_test_cmd (char *cmd
, int tty
)
9161 threadref nextthread
;
9162 int done
, result_count
;
9163 threadref threadlist
[3];
9165 printf_filtered ("Remote Threadlist test\n");
9166 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9167 &result_count
, &threadlist
[0]))
9168 printf_filtered ("FAIL: threadlist test\n");
9171 threadref
*scan
= threadlist
;
9172 threadref
*limit
= scan
+ result_count
;
9174 while (scan
< limit
)
9175 output_threadid (" thread ", scan
++);
9180 display_thread_info (struct gdb_ext_thread_info
*info
)
9182 output_threadid ("Threadid: ", &info
->threadid
);
9183 printf_filtered ("Name: %s\n ", info
->shortname
);
9184 printf_filtered ("State: %s\n", info
->display
);
9185 printf_filtered ("other: %s\n\n", info
->more_display
);
9189 get_and_display_threadinfo (threadref
*ref
)
9193 struct gdb_ext_thread_info threadinfo
;
9195 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9196 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9197 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9198 display_thread_info (&threadinfo
);
9203 threadinfo_test_cmd (char *cmd
, int tty
)
9205 int athread
= SAMPLE_THREAD
;
9209 int_to_threadref (&thread
, athread
);
9210 printf_filtered ("Remote Threadinfo test\n");
9211 if (!get_and_display_threadinfo (&thread
))
9212 printf_filtered ("FAIL cannot get thread info\n");
9216 thread_display_step (threadref
*ref
, void *context
)
9218 /* output_threadid(" threadstep ",ref); *//* simple test */
9219 return get_and_display_threadinfo (ref
);
9223 threadlist_update_test_cmd (char *cmd
, int tty
)
9225 printf_filtered ("Remote Threadlist update test\n");
9226 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9230 init_remote_threadtests (void)
9232 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9233 _("Fetch and print the remote list of "
9234 "thread identifiers, one pkt only"));
9235 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9236 _("Fetch and display info about one thread"));
9237 add_com ("tset", class_obscure
, threadset_test_cmd
,
9238 _("Test setting to a different thread"));
9239 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9240 _("Iterate through updating all remote thread info"));
9241 add_com ("talive", class_obscure
, threadalive_test
,
9242 _(" Remote thread alive test "));
9247 /* Convert a thread ID to a string. Returns the string in a static
9251 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9253 static char buf
[64];
9254 struct remote_state
*rs
= get_remote_state ();
9256 if (ptid_equal (ptid
, null_ptid
))
9257 return normal_pid_to_str (ptid
);
9258 else if (ptid_is_pid (ptid
))
9260 /* Printing an inferior target id. */
9262 /* When multi-process extensions are off, there's no way in the
9263 remote protocol to know the remote process id, if there's any
9264 at all. There's one exception --- when we're connected with
9265 target extended-remote, and we manually attached to a process
9266 with "attach PID". We don't record anywhere a flag that
9267 allows us to distinguish that case from the case of
9268 connecting with extended-remote and the stub already being
9269 attached to a process, and reporting yes to qAttached, hence
9270 no smart special casing here. */
9271 if (!remote_multi_process_p (rs
))
9273 xsnprintf (buf
, sizeof buf
, "Remote target");
9277 return normal_pid_to_str (ptid
);
9281 if (ptid_equal (magic_null_ptid
, ptid
))
9282 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9283 else if (rs
->extended
&& remote_multi_process_p (rs
))
9284 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9285 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
9287 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9288 ptid_get_lwp (ptid
));
9293 /* Get the address of the thread local variable in OBJFILE which is
9294 stored at OFFSET within the thread local storage for thread PTID. */
9297 remote_get_thread_local_address (struct target_ops
*ops
,
9298 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9300 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
9302 struct remote_state
*rs
= get_remote_state ();
9304 char *endp
= rs
->buf
+ get_remote_packet_size ();
9305 enum packet_result result
;
9307 strcpy (p
, "qGetTLSAddr:");
9309 p
= write_ptid (p
, endp
, ptid
);
9311 p
+= hexnumstr (p
, offset
);
9313 p
+= hexnumstr (p
, lm
);
9317 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9318 result
= packet_ok (rs
->buf
,
9319 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9320 if (result
== PACKET_OK
)
9324 unpack_varlen_hex (rs
->buf
, &result
);
9327 else if (result
== PACKET_UNKNOWN
)
9328 throw_error (TLS_GENERIC_ERROR
,
9329 _("Remote target doesn't support qGetTLSAddr packet"));
9331 throw_error (TLS_GENERIC_ERROR
,
9332 _("Remote target failed to process qGetTLSAddr request"));
9335 throw_error (TLS_GENERIC_ERROR
,
9336 _("TLS not supported or disabled on this target"));
9341 /* Provide thread local base, i.e. Thread Information Block address.
9342 Returns 1 if ptid is found and thread_local_base is non zero. */
9345 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
9347 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
9349 struct remote_state
*rs
= get_remote_state ();
9351 char *endp
= rs
->buf
+ get_remote_packet_size ();
9352 enum packet_result result
;
9354 strcpy (p
, "qGetTIBAddr:");
9356 p
= write_ptid (p
, endp
, ptid
);
9360 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9361 result
= packet_ok (rs
->buf
,
9362 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9363 if (result
== PACKET_OK
)
9367 unpack_varlen_hex (rs
->buf
, &result
);
9369 *addr
= (CORE_ADDR
) result
;
9372 else if (result
== PACKET_UNKNOWN
)
9373 error (_("Remote target doesn't support qGetTIBAddr packet"));
9375 error (_("Remote target failed to process qGetTIBAddr request"));
9378 error (_("qGetTIBAddr not supported or disabled on this target"));
9383 /* Support for inferring a target description based on the current
9384 architecture and the size of a 'g' packet. While the 'g' packet
9385 can have any size (since optional registers can be left off the
9386 end), some sizes are easily recognizable given knowledge of the
9387 approximate architecture. */
9389 struct remote_g_packet_guess
9392 const struct target_desc
*tdesc
;
9394 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9395 DEF_VEC_O(remote_g_packet_guess_s
);
9397 struct remote_g_packet_data
9399 VEC(remote_g_packet_guess_s
) *guesses
;
9402 static struct gdbarch_data
*remote_g_packet_data_handle
;
9405 remote_g_packet_data_init (struct obstack
*obstack
)
9407 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9411 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9412 const struct target_desc
*tdesc
)
9414 struct remote_g_packet_data
*data
9415 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9416 struct remote_g_packet_guess new_guess
, *guess
;
9419 gdb_assert (tdesc
!= NULL
);
9422 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9424 if (guess
->bytes
== bytes
)
9425 internal_error (__FILE__
, __LINE__
,
9426 _("Duplicate g packet description added for size %d"),
9429 new_guess
.bytes
= bytes
;
9430 new_guess
.tdesc
= tdesc
;
9431 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9434 /* Return 1 if remote_read_description would do anything on this target
9435 and architecture, 0 otherwise. */
9438 remote_read_description_p (struct target_ops
*target
)
9440 struct remote_g_packet_data
*data
9441 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9443 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9449 static const struct target_desc
*
9450 remote_read_description (struct target_ops
*target
)
9452 struct remote_g_packet_data
*data
9453 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9455 /* Do not try this during initial connection, when we do not know
9456 whether there is a running but stopped thread. */
9457 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9458 return target
->beneath
->to_read_description (target
->beneath
);
9460 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9462 struct remote_g_packet_guess
*guess
;
9464 int bytes
= send_g_packet ();
9467 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9469 if (guess
->bytes
== bytes
)
9470 return guess
->tdesc
;
9472 /* We discard the g packet. A minor optimization would be to
9473 hold on to it, and fill the register cache once we have selected
9474 an architecture, but it's too tricky to do safely. */
9477 return target
->beneath
->to_read_description (target
->beneath
);
9480 /* Remote file transfer support. This is host-initiated I/O, not
9481 target-initiated; for target-initiated, see remote-fileio.c. */
9483 /* If *LEFT is at least the length of STRING, copy STRING to
9484 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9485 decrease *LEFT. Otherwise raise an error. */
9488 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9490 int len
= strlen (string
);
9493 error (_("Packet too long for target."));
9495 memcpy (*buffer
, string
, len
);
9499 /* NUL-terminate the buffer as a convenience, if there is
9505 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9506 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9507 decrease *LEFT. Otherwise raise an error. */
9510 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9513 if (2 * len
> *left
)
9514 error (_("Packet too long for target."));
9516 bin2hex (bytes
, *buffer
, len
);
9520 /* NUL-terminate the buffer as a convenience, if there is
9526 /* If *LEFT is large enough, convert VALUE to hex and add it to
9527 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9528 decrease *LEFT. Otherwise raise an error. */
9531 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9533 int len
= hexnumlen (value
);
9536 error (_("Packet too long for target."));
9538 hexnumstr (*buffer
, value
);
9542 /* NUL-terminate the buffer as a convenience, if there is
9548 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9549 value, *REMOTE_ERRNO to the remote error number or zero if none
9550 was included, and *ATTACHMENT to point to the start of the annex
9551 if any. The length of the packet isn't needed here; there may
9552 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9554 Return 0 if the packet could be parsed, -1 if it could not. If
9555 -1 is returned, the other variables may not be initialized. */
9558 remote_hostio_parse_result (char *buffer
, int *retcode
,
9559 int *remote_errno
, char **attachment
)
9566 if (buffer
[0] != 'F')
9570 *retcode
= strtol (&buffer
[1], &p
, 16);
9571 if (errno
!= 0 || p
== &buffer
[1])
9574 /* Check for ",errno". */
9578 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9579 if (errno
!= 0 || p
+ 1 == p2
)
9584 /* Check for ";attachment". If there is no attachment, the
9585 packet should end here. */
9588 *attachment
= p
+ 1;
9591 else if (*p
== '\0')
9597 /* Send a prepared I/O packet to the target and read its response.
9598 The prepared packet is in the global RS->BUF before this function
9599 is called, and the answer is there when we return.
9601 COMMAND_BYTES is the length of the request to send, which may include
9602 binary data. WHICH_PACKET is the packet configuration to check
9603 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9604 is set to the error number and -1 is returned. Otherwise the value
9605 returned by the function is returned.
9607 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9608 attachment is expected; an error will be reported if there's a
9609 mismatch. If one is found, *ATTACHMENT will be set to point into
9610 the packet buffer and *ATTACHMENT_LEN will be set to the
9611 attachment's length. */
9614 remote_hostio_send_command (int command_bytes
, int which_packet
,
9615 int *remote_errno
, char **attachment
,
9616 int *attachment_len
)
9618 struct remote_state
*rs
= get_remote_state ();
9619 int ret
, bytes_read
;
9620 char *attachment_tmp
;
9622 if (!rs
->remote_desc
9623 || packet_support (which_packet
) == PACKET_DISABLE
)
9625 *remote_errno
= FILEIO_ENOSYS
;
9629 putpkt_binary (rs
->buf
, command_bytes
);
9630 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9632 /* If it timed out, something is wrong. Don't try to parse the
9636 *remote_errno
= FILEIO_EINVAL
;
9640 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9643 *remote_errno
= FILEIO_EINVAL
;
9645 case PACKET_UNKNOWN
:
9646 *remote_errno
= FILEIO_ENOSYS
;
9652 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9655 *remote_errno
= FILEIO_EINVAL
;
9659 /* Make sure we saw an attachment if and only if we expected one. */
9660 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9661 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9663 *remote_errno
= FILEIO_EINVAL
;
9667 /* If an attachment was found, it must point into the packet buffer;
9668 work out how many bytes there were. */
9669 if (attachment_tmp
!= NULL
)
9671 *attachment
= attachment_tmp
;
9672 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9678 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9679 remote file descriptor, or -1 if an error occurs (and set
9683 remote_hostio_open (struct target_ops
*self
,
9684 const char *filename
, int flags
, int mode
,
9687 struct remote_state
*rs
= get_remote_state ();
9689 int left
= get_remote_packet_size () - 1;
9691 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9693 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9695 remote_buffer_add_string (&p
, &left
, ",");
9697 remote_buffer_add_int (&p
, &left
, flags
);
9698 remote_buffer_add_string (&p
, &left
, ",");
9700 remote_buffer_add_int (&p
, &left
, mode
);
9702 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9703 remote_errno
, NULL
, NULL
);
9706 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9707 Return the number of bytes written, or -1 if an error occurs (and
9708 set *REMOTE_ERRNO). */
9711 remote_hostio_pwrite (struct target_ops
*self
,
9712 int fd
, const gdb_byte
*write_buf
, int len
,
9713 ULONGEST offset
, int *remote_errno
)
9715 struct remote_state
*rs
= get_remote_state ();
9717 int left
= get_remote_packet_size ();
9720 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9722 remote_buffer_add_int (&p
, &left
, fd
);
9723 remote_buffer_add_string (&p
, &left
, ",");
9725 remote_buffer_add_int (&p
, &left
, offset
);
9726 remote_buffer_add_string (&p
, &left
, ",");
9728 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9729 get_remote_packet_size () - (p
- rs
->buf
));
9731 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9732 remote_errno
, NULL
, NULL
);
9735 /* Read up to LEN bytes FD on the remote target into READ_BUF
9736 Return the number of bytes read, or -1 if an error occurs (and
9737 set *REMOTE_ERRNO). */
9740 remote_hostio_pread (struct target_ops
*self
,
9741 int fd
, gdb_byte
*read_buf
, int len
,
9742 ULONGEST offset
, int *remote_errno
)
9744 struct remote_state
*rs
= get_remote_state ();
9747 int left
= get_remote_packet_size ();
9748 int ret
, attachment_len
;
9751 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9753 remote_buffer_add_int (&p
, &left
, fd
);
9754 remote_buffer_add_string (&p
, &left
, ",");
9756 remote_buffer_add_int (&p
, &left
, len
);
9757 remote_buffer_add_string (&p
, &left
, ",");
9759 remote_buffer_add_int (&p
, &left
, offset
);
9761 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9762 remote_errno
, &attachment
,
9768 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9770 if (read_len
!= ret
)
9771 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9776 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9777 (and set *REMOTE_ERRNO). */
9780 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9782 struct remote_state
*rs
= get_remote_state ();
9784 int left
= get_remote_packet_size () - 1;
9786 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9788 remote_buffer_add_int (&p
, &left
, fd
);
9790 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9791 remote_errno
, NULL
, NULL
);
9794 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9795 occurs (and set *REMOTE_ERRNO). */
9798 remote_hostio_unlink (struct target_ops
*self
,
9799 const char *filename
, int *remote_errno
)
9801 struct remote_state
*rs
= get_remote_state ();
9803 int left
= get_remote_packet_size () - 1;
9805 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9807 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9810 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9811 remote_errno
, NULL
, NULL
);
9814 /* Read value of symbolic link FILENAME on the remote target. Return
9815 a null-terminated string allocated via xmalloc, or NULL if an error
9816 occurs (and set *REMOTE_ERRNO). */
9819 remote_hostio_readlink (struct target_ops
*self
,
9820 const char *filename
, int *remote_errno
)
9822 struct remote_state
*rs
= get_remote_state ();
9825 int left
= get_remote_packet_size ();
9826 int len
, attachment_len
;
9830 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9832 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9835 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9836 remote_errno
, &attachment
,
9842 ret
= xmalloc (len
+ 1);
9844 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9845 (gdb_byte
*) ret
, len
);
9846 if (read_len
!= len
)
9847 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9854 remote_fileio_errno_to_host (int errnum
)
9878 case FILEIO_ENOTDIR
:
9898 case FILEIO_ENAMETOOLONG
:
9899 return ENAMETOOLONG
;
9905 remote_hostio_error (int errnum
)
9907 int host_error
= remote_fileio_errno_to_host (errnum
);
9909 if (host_error
== -1)
9910 error (_("Unknown remote I/O error %d"), errnum
);
9912 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9916 remote_hostio_close_cleanup (void *opaque
)
9918 int fd
= *(int *) opaque
;
9921 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9926 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9928 const char *filename
= bfd_get_filename (abfd
);
9929 int fd
, remote_errno
;
9932 gdb_assert (remote_filename_p (filename
));
9934 fd
= remote_hostio_open (find_target_at (process_stratum
),
9935 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9938 errno
= remote_fileio_errno_to_host (remote_errno
);
9939 bfd_set_error (bfd_error_system_call
);
9943 stream
= xmalloc (sizeof (int));
9949 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9951 int fd
= *(int *)stream
;
9956 /* Ignore errors on close; these may happen if the remote
9957 connection was already torn down. */
9958 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9960 /* Zero means success. */
9965 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9966 file_ptr nbytes
, file_ptr offset
)
9968 int fd
= *(int *)stream
;
9970 file_ptr pos
, bytes
;
9973 while (nbytes
> pos
)
9975 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
9976 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
9977 offset
+ pos
, &remote_errno
);
9979 /* Success, but no bytes, means end-of-file. */
9983 errno
= remote_fileio_errno_to_host (remote_errno
);
9984 bfd_set_error (bfd_error_system_call
);
9995 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9997 /* FIXME: We should probably implement remote_hostio_stat. */
9998 sb
->st_size
= INT_MAX
;
10003 remote_filename_p (const char *filename
)
10005 return strncmp (filename
,
10006 REMOTE_SYSROOT_PREFIX
,
10007 sizeof (REMOTE_SYSROOT_PREFIX
) - 1) == 0;
10011 remote_bfd_open (const char *remote_file
, const char *target
)
10013 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10014 remote_bfd_iovec_open
, NULL
,
10015 remote_bfd_iovec_pread
,
10016 remote_bfd_iovec_close
,
10017 remote_bfd_iovec_stat
);
10023 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10025 struct cleanup
*back_to
, *close_cleanup
;
10026 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10029 int bytes_in_buffer
;
10032 struct remote_state
*rs
= get_remote_state ();
10034 if (!rs
->remote_desc
)
10035 error (_("command can only be used with remote target"));
10037 file
= gdb_fopen_cloexec (local_file
, "rb");
10039 perror_with_name (local_file
);
10040 back_to
= make_cleanup_fclose (file
);
10042 fd
= remote_hostio_open (find_target_at (process_stratum
),
10043 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10045 0700, &remote_errno
);
10047 remote_hostio_error (remote_errno
);
10049 /* Send up to this many bytes at once. They won't all fit in the
10050 remote packet limit, so we'll transfer slightly fewer. */
10051 io_size
= get_remote_packet_size ();
10052 buffer
= xmalloc (io_size
);
10053 make_cleanup (xfree
, buffer
);
10055 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10057 bytes_in_buffer
= 0;
10060 while (bytes_in_buffer
|| !saw_eof
)
10064 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10065 io_size
- bytes_in_buffer
,
10070 error (_("Error reading %s."), local_file
);
10073 /* EOF. Unless there is something still in the
10074 buffer from the last iteration, we are done. */
10076 if (bytes_in_buffer
== 0)
10084 bytes
+= bytes_in_buffer
;
10085 bytes_in_buffer
= 0;
10087 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10089 offset
, &remote_errno
);
10092 remote_hostio_error (remote_errno
);
10093 else if (retcode
== 0)
10094 error (_("Remote write of %d bytes returned 0!"), bytes
);
10095 else if (retcode
< bytes
)
10097 /* Short write. Save the rest of the read data for the next
10099 bytes_in_buffer
= bytes
- retcode
;
10100 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10106 discard_cleanups (close_cleanup
);
10107 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10108 remote_hostio_error (remote_errno
);
10111 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10112 do_cleanups (back_to
);
10116 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10118 struct cleanup
*back_to
, *close_cleanup
;
10119 int fd
, remote_errno
, bytes
, io_size
;
10123 struct remote_state
*rs
= get_remote_state ();
10125 if (!rs
->remote_desc
)
10126 error (_("command can only be used with remote target"));
10128 fd
= remote_hostio_open (find_target_at (process_stratum
),
10129 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10131 remote_hostio_error (remote_errno
);
10133 file
= gdb_fopen_cloexec (local_file
, "wb");
10135 perror_with_name (local_file
);
10136 back_to
= make_cleanup_fclose (file
);
10138 /* Send up to this many bytes at once. They won't all fit in the
10139 remote packet limit, so we'll transfer slightly fewer. */
10140 io_size
= get_remote_packet_size ();
10141 buffer
= xmalloc (io_size
);
10142 make_cleanup (xfree
, buffer
);
10144 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10149 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10150 fd
, buffer
, io_size
, offset
, &remote_errno
);
10152 /* Success, but no bytes, means end-of-file. */
10155 remote_hostio_error (remote_errno
);
10159 bytes
= fwrite (buffer
, 1, bytes
, file
);
10161 perror_with_name (local_file
);
10164 discard_cleanups (close_cleanup
);
10165 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10166 remote_hostio_error (remote_errno
);
10169 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10170 do_cleanups (back_to
);
10174 remote_file_delete (const char *remote_file
, int from_tty
)
10176 int retcode
, remote_errno
;
10177 struct remote_state
*rs
= get_remote_state ();
10179 if (!rs
->remote_desc
)
10180 error (_("command can only be used with remote target"));
10182 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10183 remote_file
, &remote_errno
);
10185 remote_hostio_error (remote_errno
);
10188 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10192 remote_put_command (char *args
, int from_tty
)
10194 struct cleanup
*back_to
;
10198 error_no_arg (_("file to put"));
10200 argv
= gdb_buildargv (args
);
10201 back_to
= make_cleanup_freeargv (argv
);
10202 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10203 error (_("Invalid parameters to remote put"));
10205 remote_file_put (argv
[0], argv
[1], from_tty
);
10207 do_cleanups (back_to
);
10211 remote_get_command (char *args
, int from_tty
)
10213 struct cleanup
*back_to
;
10217 error_no_arg (_("file to get"));
10219 argv
= gdb_buildargv (args
);
10220 back_to
= make_cleanup_freeargv (argv
);
10221 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10222 error (_("Invalid parameters to remote get"));
10224 remote_file_get (argv
[0], argv
[1], from_tty
);
10226 do_cleanups (back_to
);
10230 remote_delete_command (char *args
, int from_tty
)
10232 struct cleanup
*back_to
;
10236 error_no_arg (_("file to delete"));
10238 argv
= gdb_buildargv (args
);
10239 back_to
= make_cleanup_freeargv (argv
);
10240 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10241 error (_("Invalid parameters to remote delete"));
10243 remote_file_delete (argv
[0], from_tty
);
10245 do_cleanups (back_to
);
10249 remote_command (char *args
, int from_tty
)
10251 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10255 remote_can_execute_reverse (struct target_ops
*self
)
10257 if (packet_support (PACKET_bs
) == PACKET_ENABLE
10258 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
10265 remote_supports_non_stop (struct target_ops
*self
)
10271 remote_supports_disable_randomization (struct target_ops
*self
)
10273 /* Only supported in extended mode. */
10278 remote_supports_multi_process (struct target_ops
*self
)
10280 struct remote_state
*rs
= get_remote_state ();
10282 /* Only extended-remote handles being attached to multiple
10283 processes, even though plain remote can use the multi-process
10284 thread id extensions, so that GDB knows the target process's
10286 return rs
->extended
&& remote_multi_process_p (rs
);
10290 remote_supports_cond_tracepoints (void)
10292 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
10296 remote_supports_cond_breakpoints (struct target_ops
*self
)
10298 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
10302 remote_supports_fast_tracepoints (void)
10304 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
10308 remote_supports_static_tracepoints (void)
10310 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
10314 remote_supports_install_in_trace (void)
10316 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
10320 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10322 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
10327 remote_supports_string_tracing (struct target_ops
*self
)
10329 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
10333 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10335 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
10339 remote_trace_init (struct target_ops
*self
)
10342 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10343 if (strcmp (target_buf
, "OK") != 0)
10344 error (_("Target does not support this command."));
10347 static void free_actions_list (char **actions_list
);
10348 static void free_actions_list_cleanup_wrapper (void *);
10350 free_actions_list_cleanup_wrapper (void *al
)
10352 free_actions_list (al
);
10356 free_actions_list (char **actions_list
)
10360 if (actions_list
== 0)
10363 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10364 xfree (actions_list
[ndx
]);
10366 xfree (actions_list
);
10369 /* Recursive routine to walk through command list including loops, and
10370 download packets for each command. */
10373 remote_download_command_source (int num
, ULONGEST addr
,
10374 struct command_line
*cmds
)
10376 struct remote_state
*rs
= get_remote_state ();
10377 struct command_line
*cmd
;
10379 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10381 QUIT
; /* Allow user to bail out with ^C. */
10382 strcpy (rs
->buf
, "QTDPsrc:");
10383 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10384 rs
->buf
+ strlen (rs
->buf
),
10385 rs
->buf_size
- strlen (rs
->buf
));
10387 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10388 if (strcmp (target_buf
, "OK"))
10389 warning (_("Target does not support source download."));
10391 if (cmd
->control_type
== while_control
10392 || cmd
->control_type
== while_stepping_control
)
10394 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10396 QUIT
; /* Allow user to bail out with ^C. */
10397 strcpy (rs
->buf
, "QTDPsrc:");
10398 encode_source_string (num
, addr
, "cmd", "end",
10399 rs
->buf
+ strlen (rs
->buf
),
10400 rs
->buf_size
- strlen (rs
->buf
));
10402 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10403 if (strcmp (target_buf
, "OK"))
10404 warning (_("Target does not support source download."));
10410 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10412 #define BUF_SIZE 2048
10416 char buf
[BUF_SIZE
];
10417 char **tdp_actions
;
10418 char **stepping_actions
;
10420 struct cleanup
*old_chain
= NULL
;
10421 struct agent_expr
*aexpr
;
10422 struct cleanup
*aexpr_chain
= NULL
;
10424 struct breakpoint
*b
= loc
->owner
;
10425 struct tracepoint
*t
= (struct tracepoint
*) b
;
10427 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10428 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10430 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10433 tpaddr
= loc
->address
;
10434 sprintf_vma (addrbuf
, tpaddr
);
10435 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10436 addrbuf
, /* address */
10437 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10438 t
->step_count
, t
->pass_count
);
10439 /* Fast tracepoints are mostly handled by the target, but we can
10440 tell the target how big of an instruction block should be moved
10442 if (b
->type
== bp_fast_tracepoint
)
10444 /* Only test for support at download time; we may not know
10445 target capabilities at definition time. */
10446 if (remote_supports_fast_tracepoints ())
10450 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10451 tpaddr
, &isize
, NULL
))
10452 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10455 /* If it passed validation at definition but fails now,
10456 something is very wrong. */
10457 internal_error (__FILE__
, __LINE__
,
10458 _("Fast tracepoint not "
10459 "valid during download"));
10462 /* Fast tracepoints are functionally identical to regular
10463 tracepoints, so don't take lack of support as a reason to
10464 give up on the trace run. */
10465 warning (_("Target does not support fast tracepoints, "
10466 "downloading %d as regular tracepoint"), b
->number
);
10468 else if (b
->type
== bp_static_tracepoint
)
10470 /* Only test for support at download time; we may not know
10471 target capabilities at definition time. */
10472 if (remote_supports_static_tracepoints ())
10474 struct static_tracepoint_marker marker
;
10476 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10477 strcat (buf
, ":S");
10479 error (_("Static tracepoint not valid during download"));
10482 /* Fast tracepoints are functionally identical to regular
10483 tracepoints, so don't take lack of support as a reason
10484 to give up on the trace run. */
10485 error (_("Target does not support static tracepoints"));
10487 /* If the tracepoint has a conditional, make it into an agent
10488 expression and append to the definition. */
10491 /* Only test support at download time, we may not know target
10492 capabilities at definition time. */
10493 if (remote_supports_cond_tracepoints ())
10495 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10496 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10497 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10499 pkt
= buf
+ strlen (buf
);
10500 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10501 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10503 do_cleanups (aexpr_chain
);
10506 warning (_("Target does not support conditional tracepoints, "
10507 "ignoring tp %d cond"), b
->number
);
10510 if (b
->commands
|| *default_collect
)
10513 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10514 if (strcmp (target_buf
, "OK"))
10515 error (_("Target does not support tracepoints."));
10517 /* do_single_steps (t); */
10520 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10522 QUIT
; /* Allow user to bail out with ^C. */
10523 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10524 b
->number
, addrbuf
, /* address */
10526 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10529 remote_get_noisy_reply (&target_buf
,
10531 if (strcmp (target_buf
, "OK"))
10532 error (_("Error on target while setting tracepoints."));
10535 if (stepping_actions
)
10537 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10539 QUIT
; /* Allow user to bail out with ^C. */
10540 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10541 b
->number
, addrbuf
, /* address */
10542 ((ndx
== 0) ? "S" : ""),
10543 stepping_actions
[ndx
],
10544 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10546 remote_get_noisy_reply (&target_buf
,
10548 if (strcmp (target_buf
, "OK"))
10549 error (_("Error on target while setting tracepoints."));
10553 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
10555 if (b
->addr_string
)
10557 strcpy (buf
, "QTDPsrc:");
10558 encode_source_string (b
->number
, loc
->address
,
10559 "at", b
->addr_string
, buf
+ strlen (buf
),
10560 2048 - strlen (buf
));
10563 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10564 if (strcmp (target_buf
, "OK"))
10565 warning (_("Target does not support source download."));
10567 if (b
->cond_string
)
10569 strcpy (buf
, "QTDPsrc:");
10570 encode_source_string (b
->number
, loc
->address
,
10571 "cond", b
->cond_string
, buf
+ strlen (buf
),
10572 2048 - strlen (buf
));
10574 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10575 if (strcmp (target_buf
, "OK"))
10576 warning (_("Target does not support source download."));
10578 remote_download_command_source (b
->number
, loc
->address
,
10579 breakpoint_commands (b
));
10582 do_cleanups (old_chain
);
10586 remote_can_download_tracepoint (struct target_ops
*self
)
10588 struct remote_state
*rs
= get_remote_state ();
10589 struct trace_status
*ts
;
10592 /* Don't try to install tracepoints until we've relocated our
10593 symbols, and fetched and merged the target's tracepoint list with
10595 if (rs
->starting_up
)
10598 ts
= current_trace_status ();
10599 status
= remote_get_trace_status (self
, ts
);
10601 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10604 /* If we are in a tracing experiment, but remote stub doesn't support
10605 installing tracepoint in trace, we have to return. */
10606 if (!remote_supports_install_in_trace ())
10614 remote_download_trace_state_variable (struct target_ops
*self
,
10615 struct trace_state_variable
*tsv
)
10617 struct remote_state
*rs
= get_remote_state ();
10620 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10621 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10623 p
= rs
->buf
+ strlen (rs
->buf
);
10624 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10625 error (_("Trace state variable name too long for tsv definition packet"));
10626 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10629 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10630 if (*target_buf
== '\0')
10631 error (_("Target does not support this command."));
10632 if (strcmp (target_buf
, "OK") != 0)
10633 error (_("Error on target while downloading trace state variable."));
10637 remote_enable_tracepoint (struct target_ops
*self
,
10638 struct bp_location
*location
)
10640 struct remote_state
*rs
= get_remote_state ();
10643 sprintf_vma (addr_buf
, location
->address
);
10644 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10645 location
->owner
->number
, addr_buf
);
10647 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10648 if (*rs
->buf
== '\0')
10649 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10650 if (strcmp (rs
->buf
, "OK") != 0)
10651 error (_("Error on target while enabling tracepoint."));
10655 remote_disable_tracepoint (struct target_ops
*self
,
10656 struct bp_location
*location
)
10658 struct remote_state
*rs
= get_remote_state ();
10661 sprintf_vma (addr_buf
, location
->address
);
10662 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10663 location
->owner
->number
, addr_buf
);
10665 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10666 if (*rs
->buf
== '\0')
10667 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10668 if (strcmp (rs
->buf
, "OK") != 0)
10669 error (_("Error on target while disabling tracepoint."));
10673 remote_trace_set_readonly_regions (struct target_ops
*self
)
10677 bfd_size_type size
;
10683 return; /* No information to give. */
10685 strcpy (target_buf
, "QTro");
10686 offset
= strlen (target_buf
);
10687 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10689 char tmp1
[40], tmp2
[40];
10692 if ((s
->flags
& SEC_LOAD
) == 0 ||
10693 /* (s->flags & SEC_CODE) == 0 || */
10694 (s
->flags
& SEC_READONLY
) == 0)
10698 vma
= bfd_get_section_vma (abfd
, s
);
10699 size
= bfd_get_section_size (s
);
10700 sprintf_vma (tmp1
, vma
);
10701 sprintf_vma (tmp2
, vma
+ size
);
10702 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10703 if (offset
+ sec_length
+ 1 > target_buf_size
)
10705 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
10707 Too many sections for read-only sections definition packet."));
10710 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10712 offset
+= sec_length
;
10716 putpkt (target_buf
);
10717 getpkt (&target_buf
, &target_buf_size
, 0);
10722 remote_trace_start (struct target_ops
*self
)
10724 putpkt ("QTStart");
10725 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10726 if (*target_buf
== '\0')
10727 error (_("Target does not support this command."));
10728 if (strcmp (target_buf
, "OK") != 0)
10729 error (_("Bogus reply from target: %s"), target_buf
);
10733 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
10735 /* Initialize it just to avoid a GCC false warning. */
10737 /* FIXME we need to get register block size some other way. */
10738 extern int trace_regblock_size
;
10739 volatile struct gdb_exception ex
;
10740 enum packet_result result
;
10742 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
10745 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10747 putpkt ("qTStatus");
10749 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10751 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10755 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10757 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10760 throw_exception (ex
);
10763 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10765 /* If the remote target doesn't do tracing, flag it. */
10766 if (result
== PACKET_UNKNOWN
)
10769 /* We're working with a live target. */
10770 ts
->filename
= NULL
;
10773 error (_("Bogus trace status reply from target: %s"), target_buf
);
10775 /* Function 'parse_trace_status' sets default value of each field of
10776 'ts' at first, so we don't have to do it here. */
10777 parse_trace_status (p
, ts
);
10779 return ts
->running
;
10783 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
10784 struct uploaded_tp
*utp
)
10786 struct remote_state
*rs
= get_remote_state ();
10788 struct bp_location
*loc
;
10789 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10790 size_t size
= get_remote_packet_size ();
10794 tp
->base
.hit_count
= 0;
10795 tp
->traceframe_usage
= 0;
10796 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10798 /* If the tracepoint was never downloaded, don't go asking for
10800 if (tp
->number_on_target
== 0)
10802 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10803 phex_nz (loc
->address
, 0));
10805 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10806 if (reply
&& *reply
)
10809 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10815 utp
->hit_count
= 0;
10816 utp
->traceframe_usage
= 0;
10817 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10818 phex_nz (utp
->addr
, 0));
10820 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10821 if (reply
&& *reply
)
10824 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10830 remote_trace_stop (struct target_ops
*self
)
10833 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10834 if (*target_buf
== '\0')
10835 error (_("Target does not support this command."));
10836 if (strcmp (target_buf
, "OK") != 0)
10837 error (_("Bogus reply from target: %s"), target_buf
);
10841 remote_trace_find (struct target_ops
*self
,
10842 enum trace_find_type type
, int num
,
10843 CORE_ADDR addr1
, CORE_ADDR addr2
,
10846 struct remote_state
*rs
= get_remote_state ();
10847 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10849 int target_frameno
= -1, target_tracept
= -1;
10851 /* Lookups other than by absolute frame number depend on the current
10852 trace selected, so make sure it is correct on the remote end
10854 if (type
!= tfind_number
)
10855 set_remote_traceframe ();
10858 strcpy (p
, "QTFrame:");
10859 p
= strchr (p
, '\0');
10863 xsnprintf (p
, endbuf
- p
, "%x", num
);
10866 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10869 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10872 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10873 phex_nz (addr2
, 0));
10875 case tfind_outside
:
10876 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10877 phex_nz (addr2
, 0));
10880 error (_("Unknown trace find type %d"), type
);
10884 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10885 if (*reply
== '\0')
10886 error (_("Target does not support this command."));
10888 while (reply
&& *reply
)
10893 target_frameno
= (int) strtol (p
, &reply
, 16);
10895 error (_("Unable to parse trace frame number"));
10896 /* Don't update our remote traceframe number cache on failure
10897 to select a remote traceframe. */
10898 if (target_frameno
== -1)
10903 target_tracept
= (int) strtol (p
, &reply
, 16);
10905 error (_("Unable to parse tracepoint number"));
10907 case 'O': /* "OK"? */
10908 if (reply
[1] == 'K' && reply
[2] == '\0')
10911 error (_("Bogus reply from target: %s"), reply
);
10914 error (_("Bogus reply from target: %s"), reply
);
10917 *tpp
= target_tracept
;
10919 rs
->remote_traceframe_number
= target_frameno
;
10920 return target_frameno
;
10924 remote_get_trace_state_variable_value (struct target_ops
*self
,
10925 int tsvnum
, LONGEST
*val
)
10927 struct remote_state
*rs
= get_remote_state ();
10931 set_remote_traceframe ();
10933 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10935 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10936 if (reply
&& *reply
)
10940 unpack_varlen_hex (reply
+ 1, &uval
);
10941 *val
= (LONGEST
) uval
;
10949 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
10951 struct remote_state
*rs
= get_remote_state ();
10955 strcpy (p
, "QTSave:");
10957 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10958 error (_("Remote file name too long for trace save packet"));
10959 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
10962 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10963 if (*reply
== '\0')
10964 error (_("Target does not support this command."));
10965 if (strcmp (reply
, "OK") != 0)
10966 error (_("Bogus reply from target: %s"), reply
);
10970 /* This is basically a memory transfer, but needs to be its own packet
10971 because we don't know how the target actually organizes its trace
10972 memory, plus we want to be able to ask for as much as possible, but
10973 not be unhappy if we don't get as much as we ask for. */
10976 remote_get_raw_trace_data (struct target_ops
*self
,
10977 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10979 struct remote_state
*rs
= get_remote_state ();
10985 strcpy (p
, "qTBuffer:");
10987 p
+= hexnumstr (p
, offset
);
10989 p
+= hexnumstr (p
, len
);
10993 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10994 if (reply
&& *reply
)
10996 /* 'l' by itself means we're at the end of the buffer and
10997 there is nothing more to get. */
11001 /* Convert the reply into binary. Limit the number of bytes to
11002 convert according to our passed-in buffer size, rather than
11003 what was returned in the packet; if the target is
11004 unexpectedly generous and gives us a bigger reply than we
11005 asked for, we don't want to crash. */
11006 rslt
= hex2bin (target_buf
, buf
, len
);
11010 /* Something went wrong, flag as an error. */
11015 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
11017 struct remote_state
*rs
= get_remote_state ();
11019 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
11023 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11025 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11026 if (*reply
== '\0')
11027 error (_("Target does not support this command."));
11028 if (strcmp (reply
, "OK") != 0)
11029 error (_("Bogus reply from target: %s"), reply
);
11032 warning (_("Target does not support disconnected tracing."));
11036 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11038 struct thread_info
*info
= find_thread_ptid (ptid
);
11040 if (info
&& info
->private)
11041 return info
->private->core
;
11046 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
11048 struct remote_state
*rs
= get_remote_state ();
11051 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11053 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11054 if (*reply
== '\0')
11055 error (_("Target does not support this command."));
11056 if (strcmp (reply
, "OK") != 0)
11057 error (_("Bogus reply from target: %s"), reply
);
11060 static struct traceframe_info
*
11061 remote_traceframe_info (struct target_ops
*self
)
11065 text
= target_read_stralloc (¤t_target
,
11066 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11069 struct traceframe_info
*info
;
11070 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11072 info
= parse_traceframe_info (text
);
11073 do_cleanups (back_to
);
11080 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11081 instruction on which a fast tracepoint may be placed. Returns -1
11082 if the packet is not supported, and 0 if the minimum instruction
11083 length is unknown. */
11086 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
11088 struct remote_state
*rs
= get_remote_state ();
11091 /* If we're not debugging a process yet, the IPA can't be
11093 if (!target_has_execution
)
11096 /* Make sure the remote is pointing at the right process. */
11097 set_general_process ();
11099 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11101 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11102 if (*reply
== '\0')
11106 ULONGEST min_insn_len
;
11108 unpack_varlen_hex (reply
, &min_insn_len
);
11110 return (int) min_insn_len
;
11115 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
11117 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
11119 struct remote_state
*rs
= get_remote_state ();
11120 char *buf
= rs
->buf
;
11121 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11122 enum packet_result result
;
11124 gdb_assert (val
>= 0 || val
== -1);
11125 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11126 /* Send -1 as literal "-1" to avoid host size dependency. */
11130 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11133 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11136 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11137 result
= packet_ok (rs
->buf
,
11138 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11140 if (result
!= PACKET_OK
)
11141 warning (_("Bogus reply from target: %s"), rs
->buf
);
11146 remote_set_trace_notes (struct target_ops
*self
,
11147 const char *user
, const char *notes
,
11148 const char *stop_notes
)
11150 struct remote_state
*rs
= get_remote_state ();
11152 char *buf
= rs
->buf
;
11153 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11156 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11159 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11160 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11166 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11167 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11173 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11174 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11178 /* Ensure the buffer is terminated. */
11182 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11183 if (*reply
== '\0')
11186 if (strcmp (reply
, "OK") != 0)
11187 error (_("Bogus reply from target: %s"), reply
);
11193 remote_use_agent (struct target_ops
*self
, int use
)
11195 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
11197 struct remote_state
*rs
= get_remote_state ();
11199 /* If the stub supports QAgent. */
11200 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11202 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11204 if (strcmp (rs
->buf
, "OK") == 0)
11215 remote_can_use_agent (struct target_ops
*self
)
11217 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
11220 struct btrace_target_info
11222 /* The ptid of the traced thread. */
11226 /* Check whether the target supports branch tracing. */
11229 remote_supports_btrace (struct target_ops
*self
)
11231 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
11233 if (packet_support (PACKET_Qbtrace_bts
) != PACKET_ENABLE
)
11235 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
11241 /* Enable branch tracing. */
11243 static struct btrace_target_info
*
11244 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
)
11246 struct btrace_target_info
*tinfo
= NULL
;
11247 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11248 struct remote_state
*rs
= get_remote_state ();
11249 char *buf
= rs
->buf
;
11250 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11252 if (packet_config_support (packet
) != PACKET_ENABLE
)
11253 error (_("Target does not support branch tracing."));
11255 set_general_thread (ptid
);
11257 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11259 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11261 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11263 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11264 error (_("Could not enable branch tracing for %s: %s"),
11265 target_pid_to_str (ptid
), rs
->buf
+ 2);
11267 error (_("Could not enable branch tracing for %s."),
11268 target_pid_to_str (ptid
));
11271 tinfo
= xzalloc (sizeof (*tinfo
));
11272 tinfo
->ptid
= ptid
;
11277 /* Disable branch tracing. */
11280 remote_disable_btrace (struct target_ops
*self
,
11281 struct btrace_target_info
*tinfo
)
11283 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11284 struct remote_state
*rs
= get_remote_state ();
11285 char *buf
= rs
->buf
;
11286 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11288 if (packet_config_support (packet
) != PACKET_ENABLE
)
11289 error (_("Target does not support branch tracing."));
11291 set_general_thread (tinfo
->ptid
);
11293 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11295 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11297 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11299 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11300 error (_("Could not disable branch tracing for %s: %s"),
11301 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11303 error (_("Could not disable branch tracing for %s."),
11304 target_pid_to_str (tinfo
->ptid
));
11310 /* Teardown branch tracing. */
11313 remote_teardown_btrace (struct target_ops
*self
,
11314 struct btrace_target_info
*tinfo
)
11316 /* We must not talk to the target during teardown. */
11320 /* Read the branch trace. */
11322 static enum btrace_error
11323 remote_read_btrace (struct target_ops
*self
,
11324 VEC (btrace_block_s
) **btrace
,
11325 struct btrace_target_info
*tinfo
,
11326 enum btrace_read_type type
)
11328 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11329 struct remote_state
*rs
= get_remote_state ();
11330 struct cleanup
*cleanup
;
11334 if (packet_config_support (packet
) != PACKET_ENABLE
)
11335 error (_("Target does not support branch tracing."));
11337 #if !defined(HAVE_LIBEXPAT)
11338 error (_("Cannot process branch tracing result. XML parsing not supported."));
11343 case BTRACE_READ_ALL
:
11346 case BTRACE_READ_NEW
:
11349 case BTRACE_READ_DELTA
:
11353 internal_error (__FILE__
, __LINE__
,
11354 _("Bad branch tracing read type: %u."),
11355 (unsigned int) type
);
11358 xml
= target_read_stralloc (¤t_target
,
11359 TARGET_OBJECT_BTRACE
, annex
);
11361 return BTRACE_ERR_UNKNOWN
;
11363 cleanup
= make_cleanup (xfree
, xml
);
11364 *btrace
= parse_xml_btrace (xml
);
11365 do_cleanups (cleanup
);
11367 return BTRACE_ERR_NONE
;
11371 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
11373 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
11377 /* Implementation of to_load. */
11380 remote_load (struct target_ops
*self
, char *name
, int from_tty
)
11382 generic_load (name
, from_tty
);
11386 init_remote_ops (void)
11388 remote_ops
.to_shortname
= "remote";
11389 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11390 remote_ops
.to_doc
=
11391 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11392 Specify the serial device it is connected to\n\
11393 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11394 remote_ops
.to_open
= remote_open
;
11395 remote_ops
.to_close
= remote_close
;
11396 remote_ops
.to_detach
= remote_detach
;
11397 remote_ops
.to_disconnect
= remote_disconnect
;
11398 remote_ops
.to_resume
= remote_resume
;
11399 remote_ops
.to_wait
= remote_wait
;
11400 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11401 remote_ops
.to_store_registers
= remote_store_registers
;
11402 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11403 remote_ops
.to_files_info
= remote_files_info
;
11404 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11405 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11406 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11407 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11408 remote_ops
.to_watchpoint_addr_within_range
=
11409 remote_watchpoint_addr_within_range
;
11410 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11411 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11412 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11413 remote_ops
.to_region_ok_for_hw_watchpoint
11414 = remote_region_ok_for_hw_watchpoint
;
11415 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11416 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11417 remote_ops
.to_kill
= remote_kill
;
11418 remote_ops
.to_load
= remote_load
;
11419 remote_ops
.to_mourn_inferior
= remote_mourn
;
11420 remote_ops
.to_pass_signals
= remote_pass_signals
;
11421 remote_ops
.to_program_signals
= remote_program_signals
;
11422 remote_ops
.to_thread_alive
= remote_thread_alive
;
11423 remote_ops
.to_find_new_threads
= remote_threads_info
;
11424 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11425 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11426 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11427 remote_ops
.to_stop
= remote_stop
;
11428 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11429 remote_ops
.to_rcmd
= remote_rcmd
;
11430 remote_ops
.to_log_command
= serial_log_command
;
11431 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11432 remote_ops
.to_stratum
= process_stratum
;
11433 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11434 remote_ops
.to_has_memory
= default_child_has_memory
;
11435 remote_ops
.to_has_stack
= default_child_has_stack
;
11436 remote_ops
.to_has_registers
= default_child_has_registers
;
11437 remote_ops
.to_has_execution
= default_child_has_execution
;
11438 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11439 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11440 remote_ops
.to_magic
= OPS_MAGIC
;
11441 remote_ops
.to_memory_map
= remote_memory_map
;
11442 remote_ops
.to_flash_erase
= remote_flash_erase
;
11443 remote_ops
.to_flash_done
= remote_flash_done
;
11444 remote_ops
.to_read_description
= remote_read_description
;
11445 remote_ops
.to_search_memory
= remote_search_memory
;
11446 remote_ops
.to_can_async_p
= remote_can_async_p
;
11447 remote_ops
.to_is_async_p
= remote_is_async_p
;
11448 remote_ops
.to_async
= remote_async
;
11449 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11450 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11451 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11452 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11453 remote_ops
.to_supports_disable_randomization
11454 = remote_supports_disable_randomization
;
11455 remote_ops
.to_fileio_open
= remote_hostio_open
;
11456 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11457 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11458 remote_ops
.to_fileio_close
= remote_hostio_close
;
11459 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11460 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11461 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11462 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11463 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11464 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11465 remote_ops
.to_trace_init
= remote_trace_init
;
11466 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11467 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11468 remote_ops
.to_download_trace_state_variable
11469 = remote_download_trace_state_variable
;
11470 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11471 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11472 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11473 remote_ops
.to_trace_start
= remote_trace_start
;
11474 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11475 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11476 remote_ops
.to_trace_stop
= remote_trace_stop
;
11477 remote_ops
.to_trace_find
= remote_trace_find
;
11478 remote_ops
.to_get_trace_state_variable_value
11479 = remote_get_trace_state_variable_value
;
11480 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11481 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11482 remote_ops
.to_upload_trace_state_variables
11483 = remote_upload_trace_state_variables
;
11484 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11485 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11486 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11487 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11488 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11489 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11490 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11491 remote_ops
.to_verify_memory
= remote_verify_memory
;
11492 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11493 remote_ops
.to_set_permissions
= remote_set_permissions
;
11494 remote_ops
.to_static_tracepoint_marker_at
11495 = remote_static_tracepoint_marker_at
;
11496 remote_ops
.to_static_tracepoint_markers_by_strid
11497 = remote_static_tracepoint_markers_by_strid
;
11498 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11499 remote_ops
.to_use_agent
= remote_use_agent
;
11500 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11501 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11502 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11503 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11504 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11505 remote_ops
.to_read_btrace
= remote_read_btrace
;
11506 remote_ops
.to_augmented_libraries_svr4_read
=
11507 remote_augmented_libraries_svr4_read
;
11510 /* Set up the extended remote vector by making a copy of the standard
11511 remote vector and adding to it. */
11514 init_extended_remote_ops (void)
11516 extended_remote_ops
= remote_ops
;
11518 extended_remote_ops
.to_shortname
= "extended-remote";
11519 extended_remote_ops
.to_longname
=
11520 "Extended remote serial target in gdb-specific protocol";
11521 extended_remote_ops
.to_doc
=
11522 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11523 Specify the serial device it is connected to (e.g. /dev/ttya).";
11524 extended_remote_ops
.to_open
= extended_remote_open
;
11525 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11526 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11527 extended_remote_ops
.to_detach
= extended_remote_detach
;
11528 extended_remote_ops
.to_attach
= extended_remote_attach
;
11529 extended_remote_ops
.to_kill
= extended_remote_kill
;
11530 extended_remote_ops
.to_supports_disable_randomization
11531 = extended_remote_supports_disable_randomization
;
11535 remote_can_async_p (struct target_ops
*ops
)
11537 struct remote_state
*rs
= get_remote_state ();
11539 if (!target_async_permitted
)
11540 /* We only enable async when the user specifically asks for it. */
11543 /* We're async whenever the serial device is. */
11544 return serial_can_async_p (rs
->remote_desc
);
11548 remote_is_async_p (struct target_ops
*ops
)
11550 struct remote_state
*rs
= get_remote_state ();
11552 if (!target_async_permitted
)
11553 /* We only enable async when the user specifically asks for it. */
11556 /* We're async whenever the serial device is. */
11557 return serial_is_async_p (rs
->remote_desc
);
11560 /* Pass the SERIAL event on and up to the client. One day this code
11561 will be able to delay notifying the client of an event until the
11562 point where an entire packet has been received. */
11564 static serial_event_ftype remote_async_serial_handler
;
11567 remote_async_serial_handler (struct serial
*scb
, void *context
)
11569 struct remote_state
*rs
= context
;
11571 /* Don't propogate error information up to the client. Instead let
11572 the client find out about the error by querying the target. */
11573 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11577 remote_async_inferior_event_handler (gdb_client_data data
)
11579 inferior_event_handler (INF_REG_EVENT
, NULL
);
11583 remote_async (struct target_ops
*ops
,
11584 void (*callback
) (enum inferior_event_type event_type
,
11588 struct remote_state
*rs
= get_remote_state ();
11590 if (callback
!= NULL
)
11592 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11593 rs
->async_client_callback
= callback
;
11594 rs
->async_client_context
= context
;
11597 serial_async (rs
->remote_desc
, NULL
, NULL
);
11601 set_remote_cmd (char *args
, int from_tty
)
11603 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11607 show_remote_cmd (char *args
, int from_tty
)
11609 /* We can't just use cmd_show_list here, because we want to skip
11610 the redundant "show remote Z-packet" and the legacy aliases. */
11611 struct cleanup
*showlist_chain
;
11612 struct cmd_list_element
*list
= remote_show_cmdlist
;
11613 struct ui_out
*uiout
= current_uiout
;
11615 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11616 for (; list
!= NULL
; list
= list
->next
)
11617 if (strcmp (list
->name
, "Z-packet") == 0)
11619 else if (list
->type
== not_set_cmd
)
11620 /* Alias commands are exactly like the original, except they
11621 don't have the normal type. */
11625 struct cleanup
*option_chain
11626 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11628 ui_out_field_string (uiout
, "name", list
->name
);
11629 ui_out_text (uiout
, ": ");
11630 if (list
->type
== show_cmd
)
11631 do_show_command ((char *) NULL
, from_tty
, list
);
11633 cmd_func (list
, NULL
, from_tty
);
11634 /* Close the tuple. */
11635 do_cleanups (option_chain
);
11638 /* Close the tuple. */
11639 do_cleanups (showlist_chain
);
11643 /* Function to be called whenever a new objfile (shlib) is detected. */
11645 remote_new_objfile (struct objfile
*objfile
)
11647 struct remote_state
*rs
= get_remote_state ();
11649 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11650 remote_check_symbols ();
11653 /* Pull all the tracepoints defined on the target and create local
11654 data structures representing them. We don't want to create real
11655 tracepoints yet, we don't want to mess up the user's existing
11659 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
11661 struct remote_state
*rs
= get_remote_state ();
11664 /* Ask for a first packet of tracepoint definition. */
11666 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11668 while (*p
&& *p
!= 'l')
11670 parse_tracepoint_definition (p
, utpp
);
11671 /* Ask for another packet of tracepoint definition. */
11673 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11680 remote_upload_trace_state_variables (struct target_ops
*self
,
11681 struct uploaded_tsv
**utsvp
)
11683 struct remote_state
*rs
= get_remote_state ();
11686 /* Ask for a first packet of variable definition. */
11688 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11690 while (*p
&& *p
!= 'l')
11692 parse_tsv_definition (p
, utsvp
);
11693 /* Ask for another packet of variable definition. */
11695 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11701 /* The "set/show range-stepping" show hook. */
11704 show_range_stepping (struct ui_file
*file
, int from_tty
,
11705 struct cmd_list_element
*c
,
11708 fprintf_filtered (file
,
11709 _("Debugger's willingness to use range stepping "
11710 "is %s.\n"), value
);
11713 /* The "set/show range-stepping" set hook. */
11716 set_range_stepping (char *ignore_args
, int from_tty
,
11717 struct cmd_list_element
*c
)
11719 struct remote_state
*rs
= get_remote_state ();
11721 /* Whene enabling, check whether range stepping is actually
11722 supported by the target, and warn if not. */
11723 if (use_range_stepping
)
11725 if (rs
->remote_desc
!= NULL
)
11727 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
11728 remote_vcont_probe (rs
);
11730 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
11731 && rs
->supports_vCont
.r
)
11735 warning (_("Range stepping is not supported by the current target"));
11740 _initialize_remote (void)
11742 struct remote_state
*rs
;
11743 struct cmd_list_element
*cmd
;
11744 const char *cmd_name
;
11746 /* architecture specific data */
11747 remote_gdbarch_data_handle
=
11748 gdbarch_data_register_post_init (init_remote_state
);
11749 remote_g_packet_data_handle
=
11750 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11752 /* Initialize the per-target state. At the moment there is only one
11753 of these, not one per target. Only one target is active at a
11755 remote_state
= new_remote_state ();
11757 init_remote_ops ();
11758 add_target (&remote_ops
);
11760 init_extended_remote_ops ();
11761 add_target (&extended_remote_ops
);
11763 /* Hook into new objfile notification. */
11764 observer_attach_new_objfile (remote_new_objfile
);
11765 /* We're no longer interested in notification events of an inferior
11767 observer_attach_inferior_exit (discard_pending_stop_replies
);
11769 /* Set up signal handlers. */
11770 async_sigint_remote_token
=
11771 create_async_signal_handler (async_remote_interrupt
, NULL
);
11772 async_sigint_remote_twice_token
=
11773 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11776 init_remote_threadtests ();
11779 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11780 /* set/show remote ... */
11782 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11783 Remote protocol specific variables\n\
11784 Configure various remote-protocol specific variables such as\n\
11785 the packets being used"),
11786 &remote_set_cmdlist
, "set remote ",
11787 0 /* allow-unknown */, &setlist
);
11788 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11789 Remote protocol specific variables\n\
11790 Configure various remote-protocol specific variables such as\n\
11791 the packets being used"),
11792 &remote_show_cmdlist
, "show remote ",
11793 0 /* allow-unknown */, &showlist
);
11795 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11796 Compare section data on target to the exec file.\n\
11797 Argument is a single section name (default: all loaded sections).\n\
11798 To compare only read-only loaded sections, specify the -r option."),
11801 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11802 Send an arbitrary packet to a remote target.\n\
11803 maintenance packet TEXT\n\
11804 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11805 this command sends the string TEXT to the inferior, and displays the\n\
11806 response packet. GDB supplies the initial `$' character, and the\n\
11807 terminating `#' character and checksum."),
11810 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11811 Set whether to send break if interrupted."), _("\
11812 Show whether to send break if interrupted."), _("\
11813 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11814 set_remotebreak
, show_remotebreak
,
11815 &setlist
, &showlist
);
11816 cmd_name
= "remotebreak";
11817 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11818 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11819 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11820 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11821 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11823 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11824 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11826 Set interrupt sequence to remote target."), _("\
11827 Show interrupt sequence to remote target."), _("\
11828 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11829 NULL
, show_interrupt_sequence
,
11830 &remote_set_cmdlist
,
11831 &remote_show_cmdlist
);
11833 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11834 &interrupt_on_connect
, _("\
11835 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11836 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11837 If set, interrupt sequence is sent to remote target."),
11839 &remote_set_cmdlist
, &remote_show_cmdlist
);
11841 /* Install commands for configuring memory read/write packets. */
11843 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11844 Set the maximum number of bytes per memory write packet (deprecated)."),
11846 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11847 Show the maximum number of bytes per memory write packet (deprecated)."),
11849 add_cmd ("memory-write-packet-size", no_class
,
11850 set_memory_write_packet_size
, _("\
11851 Set the maximum number of bytes per memory-write packet.\n\
11852 Specify the number of bytes in a packet or 0 (zero) for the\n\
11853 default packet size. The actual limit is further reduced\n\
11854 dependent on the target. Specify ``fixed'' to disable the\n\
11855 further restriction and ``limit'' to enable that restriction."),
11856 &remote_set_cmdlist
);
11857 add_cmd ("memory-read-packet-size", no_class
,
11858 set_memory_read_packet_size
, _("\
11859 Set the maximum number of bytes per memory-read packet.\n\
11860 Specify the number of bytes in a packet or 0 (zero) for the\n\
11861 default packet size. The actual limit is further reduced\n\
11862 dependent on the target. Specify ``fixed'' to disable the\n\
11863 further restriction and ``limit'' to enable that restriction."),
11864 &remote_set_cmdlist
);
11865 add_cmd ("memory-write-packet-size", no_class
,
11866 show_memory_write_packet_size
,
11867 _("Show the maximum number of bytes per memory-write packet."),
11868 &remote_show_cmdlist
);
11869 add_cmd ("memory-read-packet-size", no_class
,
11870 show_memory_read_packet_size
,
11871 _("Show the maximum number of bytes per memory-read packet."),
11872 &remote_show_cmdlist
);
11874 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11875 &remote_hw_watchpoint_limit
, _("\
11876 Set the maximum number of target hardware watchpoints."), _("\
11877 Show the maximum number of target hardware watchpoints."), _("\
11878 Specify a negative limit for unlimited."),
11879 NULL
, NULL
, /* FIXME: i18n: The maximum
11880 number of target hardware
11881 watchpoints is %s. */
11882 &remote_set_cmdlist
, &remote_show_cmdlist
);
11883 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11884 &remote_hw_watchpoint_length_limit
, _("\
11885 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11886 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11887 Specify a negative limit for unlimited."),
11888 NULL
, NULL
, /* FIXME: i18n: The maximum
11889 length (in bytes) of a target
11890 hardware watchpoint is %s. */
11891 &remote_set_cmdlist
, &remote_show_cmdlist
);
11892 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11893 &remote_hw_breakpoint_limit
, _("\
11894 Set the maximum number of target hardware breakpoints."), _("\
11895 Show the maximum number of target hardware breakpoints."), _("\
11896 Specify a negative limit for unlimited."),
11897 NULL
, NULL
, /* FIXME: i18n: The maximum
11898 number of target hardware
11899 breakpoints is %s. */
11900 &remote_set_cmdlist
, &remote_show_cmdlist
);
11902 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11903 &remote_address_size
, _("\
11904 Set the maximum size of the address (in bits) in a memory packet."), _("\
11905 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11907 NULL
, /* FIXME: i18n: */
11908 &setlist
, &showlist
);
11910 init_all_packet_configs ();
11912 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11913 "X", "binary-download", 1);
11915 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11916 "vCont", "verbose-resume", 0);
11918 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11919 "QPassSignals", "pass-signals", 0);
11921 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11922 "QProgramSignals", "program-signals", 0);
11924 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11925 "qSymbol", "symbol-lookup", 0);
11927 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11928 "P", "set-register", 1);
11930 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11931 "p", "fetch-register", 1);
11933 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11934 "Z0", "software-breakpoint", 0);
11936 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11937 "Z1", "hardware-breakpoint", 0);
11939 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11940 "Z2", "write-watchpoint", 0);
11942 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11943 "Z3", "read-watchpoint", 0);
11945 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11946 "Z4", "access-watchpoint", 0);
11948 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11949 "qXfer:auxv:read", "read-aux-vector", 0);
11951 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11952 "qXfer:features:read", "target-features", 0);
11954 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11955 "qXfer:libraries:read", "library-info", 0);
11957 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11958 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11960 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11961 "qXfer:memory-map:read", "memory-map", 0);
11963 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11964 "qXfer:spu:read", "read-spu-object", 0);
11966 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11967 "qXfer:spu:write", "write-spu-object", 0);
11969 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11970 "qXfer:osdata:read", "osdata", 0);
11972 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11973 "qXfer:threads:read", "threads", 0);
11975 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11976 "qXfer:siginfo:read", "read-siginfo-object", 0);
11978 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11979 "qXfer:siginfo:write", "write-siginfo-object", 0);
11981 add_packet_config_cmd
11982 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11983 "qXfer:traceframe-info:read", "traceframe-info", 0);
11985 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11986 "qXfer:uib:read", "unwind-info-block", 0);
11988 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11989 "qGetTLSAddr", "get-thread-local-storage-address",
11992 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11993 "qGetTIBAddr", "get-thread-information-block-address",
11996 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11997 "bc", "reverse-continue", 0);
11999 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12000 "bs", "reverse-step", 0);
12002 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12003 "qSupported", "supported-packets", 0);
12005 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12006 "qSearch:memory", "search-memory", 0);
12008 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12009 "qTStatus", "trace-status", 0);
12011 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12012 "vFile:open", "hostio-open", 0);
12014 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12015 "vFile:pread", "hostio-pread", 0);
12017 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12018 "vFile:pwrite", "hostio-pwrite", 0);
12020 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12021 "vFile:close", "hostio-close", 0);
12023 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12024 "vFile:unlink", "hostio-unlink", 0);
12026 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12027 "vFile:readlink", "hostio-readlink", 0);
12029 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12030 "vAttach", "attach", 0);
12032 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12035 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12036 "QStartNoAckMode", "noack", 0);
12038 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12039 "vKill", "kill", 0);
12041 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12042 "qAttached", "query-attached", 0);
12044 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12045 "ConditionalTracepoints",
12046 "conditional-tracepoints", 0);
12048 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12049 "ConditionalBreakpoints",
12050 "conditional-breakpoints", 0);
12052 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12053 "BreakpointCommands",
12054 "breakpoint-commands", 0);
12056 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12057 "FastTracepoints", "fast-tracepoints", 0);
12059 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12060 "TracepointSource", "TracepointSource", 0);
12062 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12063 "QAllow", "allow", 0);
12065 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12066 "StaticTracepoints", "static-tracepoints", 0);
12068 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12069 "InstallInTrace", "install-in-trace", 0);
12071 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12072 "qXfer:statictrace:read", "read-sdata-object", 0);
12074 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12075 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12077 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12078 "QDisableRandomization", "disable-randomization", 0);
12080 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12081 "QAgent", "agent", 0);
12083 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12084 "QTBuffer:size", "trace-buffer-size", 0);
12086 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12087 "Qbtrace:off", "disable-btrace", 0);
12089 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12090 "Qbtrace:bts", "enable-btrace", 0);
12092 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12093 "qXfer:btrace", "read-btrace", 0);
12095 /* Assert that we've registered commands for all packet configs. */
12099 for (i
= 0; i
< PACKET_MAX
; i
++)
12101 /* Ideally all configs would have a command associated. Some
12102 still don't though. */
12107 case PACKET_QNonStop
:
12108 case PACKET_multiprocess_feature
:
12109 case PACKET_EnableDisableTracepoints_feature
:
12110 case PACKET_tracenz_feature
:
12111 case PACKET_DisconnectedTracing_feature
:
12112 case PACKET_augmented_libraries_svr4_read_feature
:
12114 /* Additions to this list need to be well justified:
12115 pre-existing packets are OK; new packets are not. */
12123 /* This catches both forgetting to add a config command, and
12124 forgetting to remove a packet from the exception list. */
12125 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
12129 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12130 Z sub-packet has its own set and show commands, but users may
12131 have sets to this variable in their .gdbinit files (or in their
12133 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12134 &remote_Z_packet_detect
, _("\
12135 Set use of remote protocol `Z' packets"), _("\
12136 Show use of remote protocol `Z' packets "), _("\
12137 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12139 set_remote_protocol_Z_packet_cmd
,
12140 show_remote_protocol_Z_packet_cmd
,
12141 /* FIXME: i18n: Use of remote protocol
12142 `Z' packets is %s. */
12143 &remote_set_cmdlist
, &remote_show_cmdlist
);
12145 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12146 Manipulate files on the remote system\n\
12147 Transfer files to and from the remote target system."),
12148 &remote_cmdlist
, "remote ",
12149 0 /* allow-unknown */, &cmdlist
);
12151 add_cmd ("put", class_files
, remote_put_command
,
12152 _("Copy a local file to the remote system."),
12155 add_cmd ("get", class_files
, remote_get_command
,
12156 _("Copy a remote file to the local system."),
12159 add_cmd ("delete", class_files
, remote_delete_command
,
12160 _("Delete a remote file."),
12163 remote_exec_file
= xstrdup ("");
12164 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12165 &remote_exec_file
, _("\
12166 Set the remote pathname for \"run\""), _("\
12167 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12168 &remote_set_cmdlist
, &remote_show_cmdlist
);
12170 add_setshow_boolean_cmd ("range-stepping", class_run
,
12171 &use_range_stepping
, _("\
12172 Enable or disable range stepping."), _("\
12173 Show whether target-assisted range stepping is enabled."), _("\
12174 If on, and the target supports it, when stepping a source line, GDB\n\
12175 tells the target to step the corresponding range of addresses itself instead\n\
12176 of issuing multiple single-steps. This speeds up source level\n\
12177 stepping. If off, GDB always issues single-steps, even if range\n\
12178 stepping is supported by the target. The default is on."),
12179 set_range_stepping
,
12180 show_range_stepping
,
12184 /* Eventually initialize fileio. See fileio.c */
12185 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12187 /* Take advantage of the fact that the TID field is not used, to tag
12188 special ptids with it set to != 0. */
12189 magic_null_ptid
= ptid_build (42000, -1, 1);
12190 not_sent_ptid
= ptid_build (42000, -2, 1);
12191 any_thread_ptid
= ptid_build (42000, 0, 1);
12193 target_buf_size
= 2048;
12194 target_buf
= xmalloc (target_buf_size
);