1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2013 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. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
47 #include "filestuff.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void async_cleanup_sigint_signal_handler (void *dummy
);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void async_handle_remote_sigint (int);
97 static void async_handle_remote_sigint_twice (int);
99 static void remote_files_info (struct target_ops
*ignore
);
101 static void remote_prepare_to_store (struct regcache
*regcache
);
103 static void remote_open (char *name
, int from_tty
);
105 static void extended_remote_open (char *name
, int from_tty
);
107 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
109 static void remote_close (void);
111 static void remote_mourn (struct target_ops
*ops
);
113 static void extended_remote_restart (void);
115 static void extended_remote_mourn (struct target_ops
*);
117 static void remote_mourn_1 (struct target_ops
*);
119 static void remote_send (char **buf
, long *sizeof_buf_p
);
121 static int readchar (int timeout
);
123 static void remote_serial_write (const char *str
, int len
);
125 static void remote_kill (struct target_ops
*ops
);
127 static int tohex (int nib
);
129 static int remote_can_async_p (void);
131 static int remote_is_async_p (void);
133 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
134 void *context
), void *context
);
136 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
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 (ptid_t
);
159 static int ishex (int ch
, int *val
);
161 static int stubhex (int ch
);
163 static int hexnumstr (char *, ULONGEST
);
165 static int hexnumnstr (char *, ULONGEST
, int);
167 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
169 static void print_packet (char *);
171 static void compare_sections_command (char *, int);
173 static void packet_command (char *, int);
175 static int stub_unpack_int (char *buff
, int fieldlength
);
177 static ptid_t
remote_current_thread (ptid_t oldptid
);
179 static void remote_find_new_threads (void);
181 static void record_currthread (ptid_t currthread
);
183 static int fromhex (int a
);
185 static int putpkt_binary (char *buf
, int cnt
);
187 static void check_binary_download (CORE_ADDR addr
);
189 struct packet_config
;
191 static void show_packet_config_cmd (struct packet_config
*config
);
193 static void update_packet_config (struct packet_config
*config
);
195 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
196 struct cmd_list_element
*c
);
198 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
200 struct cmd_list_element
*c
,
203 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
204 static ptid_t
read_ptid (char *buf
, char **obuf
);
206 static void remote_set_permissions (void);
209 static int remote_get_trace_status (struct trace_status
*ts
);
211 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
213 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
215 static void remote_query_supported (void);
217 static void remote_check_symbols (void);
219 void _initialize_remote (void);
222 static void stop_reply_xfree (struct stop_reply
*);
223 static void remote_parse_stop_reply (char *, struct stop_reply
*);
224 static void push_stop_reply (struct stop_reply
*);
225 static void discard_pending_stop_replies (struct inferior
*);
226 static int peek_stop_reply (ptid_t ptid
);
228 static void remote_async_inferior_event_handler (gdb_client_data
);
230 static void remote_terminal_ours (void);
232 static int remote_read_description_p (struct target_ops
*target
);
234 static void remote_console_output (char *msg
);
236 static int remote_supports_cond_breakpoints (void);
238 static int remote_can_run_breakpoint_commands (void);
242 static struct cmd_list_element
*remote_cmdlist
;
244 /* For "set remote" and "show remote". */
246 static struct cmd_list_element
*remote_set_cmdlist
;
247 static struct cmd_list_element
*remote_show_cmdlist
;
249 /* Stub vCont actions support.
251 Each field is a boolean flag indicating whether the stub reports
252 support for the corresponding action. */
254 struct vCont_action_support
263 /* Controls whether GDB is willing to use range stepping. */
265 static int use_range_stepping
= 1;
267 /* Description of the remote protocol state for the currently
268 connected target. This is per-target state, and independent of the
269 selected architecture. */
273 /* A buffer to use for incoming packets, and its current size. The
274 buffer is grown dynamically for larger incoming packets.
275 Outgoing packets may also be constructed in this buffer.
276 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
277 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
282 /* True if we're going through initial connection setup (finding out
283 about the remote side's threads, relocating symbols, etc.). */
286 /* If we negotiated packet size explicitly (and thus can bypass
287 heuristics for the largest packet size that will not overflow
288 a buffer in the stub), this will be set to that packet size.
289 Otherwise zero, meaning to use the guessed size. */
290 long explicit_packet_size
;
292 /* remote_wait is normally called when the target is running and
293 waits for a stop reply packet. But sometimes we need to call it
294 when the target is already stopped. We can send a "?" packet
295 and have remote_wait read the response. Or, if we already have
296 the response, we can stash it in BUF and tell remote_wait to
297 skip calling getpkt. This flag is set when BUF contains a
298 stop reply packet and the target is not waiting. */
299 int cached_wait_status
;
301 /* True, if in no ack mode. That is, neither GDB nor the stub will
302 expect acks from each other. The connection is assumed to be
306 /* True if we're connected in extended remote mode. */
309 /* True if the stub reported support for multi-process
311 int multi_process_aware
;
313 /* True if we resumed the target and we're waiting for the target to
314 stop. In the mean time, we can't start another command/query.
315 The remote server wouldn't be ready to process it, so we'd
316 timeout waiting for a reply that would never come and eventually
317 we'd close the connection. This can happen in asynchronous mode
318 because we allow GDB commands while the target is running. */
319 int waiting_for_stop_reply
;
321 /* True if the stub reports support for non-stop mode. */
324 /* The status of the stub support for the various vCont actions. */
325 struct vCont_action_support supports_vCont
;
327 /* True if the stub reports support for conditional tracepoints. */
328 int cond_tracepoints
;
330 /* True if the stub reports support for target-side breakpoint
332 int cond_breakpoints
;
334 /* True if the stub reports support for target-side breakpoint
336 int breakpoint_commands
;
338 /* True if the stub reports support for fast tracepoints. */
339 int fast_tracepoints
;
341 /* True if the stub reports support for static tracepoints. */
342 int static_tracepoints
;
344 /* True if the stub reports support for installing tracepoint while
346 int install_in_trace
;
348 /* True if the stub can continue running a trace while GDB is
350 int disconnected_tracing
;
352 /* True if the stub reports support for enabling and disabling
353 tracepoints while a trace experiment is running. */
354 int enable_disable_tracepoints
;
356 /* True if the stub can collect strings using tracenz bytecode. */
359 /* True if the stub supports qXfer:libraries-svr4:read with a
361 int augmented_libraries_svr4_read
;
363 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
364 responded to that. */
368 /* Private data that we'll store in (struct thread_info)->private. */
369 struct private_thread_info
376 free_private_thread_info (struct private_thread_info
*info
)
382 /* Returns true if the multi-process extensions are in effect. */
384 remote_multi_process_p (struct remote_state
*rs
)
386 return rs
->multi_process_aware
;
389 /* This data could be associated with a target, but we do not always
390 have access to the current target when we need it, so for now it is
391 static. This will be fine for as long as only one target is in use
393 static struct remote_state
*remote_state
;
395 static struct remote_state
*
396 get_remote_state_raw (void)
401 /* Allocate a new struct remote_state with xmalloc, initialize it, and
404 static struct remote_state
*
405 new_remote_state (void)
407 struct remote_state
*result
= XCNEW (struct remote_state
);
409 /* The default buffer size is unimportant; it will be expanded
410 whenever a larger buffer is needed. */
411 result
->buf_size
= 400;
412 result
->buf
= xmalloc (result
->buf_size
);
417 /* Description of the remote protocol for a given architecture. */
421 long offset
; /* Offset into G packet. */
422 long regnum
; /* GDB's internal register number. */
423 LONGEST pnum
; /* Remote protocol register number. */
424 int in_g_packet
; /* Always part of G packet. */
425 /* long size in bytes; == register_size (target_gdbarch (), regnum);
427 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
431 struct remote_arch_state
433 /* Description of the remote protocol registers. */
434 long sizeof_g_packet
;
436 /* Description of the remote protocol registers indexed by REGNUM
437 (making an array gdbarch_num_regs in size). */
438 struct packet_reg
*regs
;
440 /* This is the size (in chars) of the first response to the ``g''
441 packet. It is used as a heuristic when determining the maximum
442 size of memory-read and memory-write packets. A target will
443 typically only reserve a buffer large enough to hold the ``g''
444 packet. The size does not include packet overhead (headers and
446 long actual_register_packet_size
;
448 /* This is the maximum size (in chars) of a non read/write packet.
449 It is also used as a cap on the size of read/write packets. */
450 long remote_packet_size
;
453 long sizeof_pkt
= 2000;
455 /* Utility: generate error from an incoming stub packet. */
457 trace_error (char *buf
)
460 return; /* not an error msg */
463 case '1': /* malformed packet error */
464 if (*++buf
== '0') /* general case: */
465 error (_("remote.c: error in outgoing packet."));
467 error (_("remote.c: error in outgoing packet at field #%ld."),
468 strtol (buf
, NULL
, 16));
470 error (_("Target returns error code '%s'."), buf
);
474 /* Utility: wait for reply from stub, while accepting "O" packets. */
476 remote_get_noisy_reply (char **buf_p
,
479 do /* Loop on reply from remote stub. */
483 QUIT
; /* Allow user to bail out with ^C. */
484 getpkt (buf_p
, sizeof_buf
, 0);
488 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
491 CORE_ADDR from
, to
, org_to
;
493 int adjusted_size
= 0;
494 volatile struct gdb_exception ex
;
496 p
= buf
+ strlen ("qRelocInsn:");
497 pp
= unpack_varlen_hex (p
, &ul
);
499 error (_("invalid qRelocInsn packet: %s"), buf
);
503 unpack_varlen_hex (p
, &ul
);
508 TRY_CATCH (ex
, RETURN_MASK_ALL
)
510 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
514 adjusted_size
= to
- org_to
;
516 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
519 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
521 /* Propagate memory errors silently back to the target.
522 The stub may have limited the range of addresses we
523 can write to, for example. */
528 /* Something unexpectedly bad happened. Be verbose so
529 we can tell what, and propagate the error back to the
530 stub, so it doesn't get stuck waiting for a
532 exception_fprintf (gdb_stderr
, ex
,
533 _("warning: relocating instruction: "));
537 else if (buf
[0] == 'O' && buf
[1] != 'K')
538 remote_console_output (buf
+ 1); /* 'O' message from stub */
540 return buf
; /* Here's the actual reply. */
545 /* Handle for retreving the remote protocol data from gdbarch. */
546 static struct gdbarch_data
*remote_gdbarch_data_handle
;
548 static struct remote_arch_state
*
549 get_remote_arch_state (void)
551 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
554 /* Fetch the global remote target state. */
556 static struct remote_state
*
557 get_remote_state (void)
559 /* Make sure that the remote architecture state has been
560 initialized, because doing so might reallocate rs->buf. Any
561 function which calls getpkt also needs to be mindful of changes
562 to rs->buf, but this call limits the number of places which run
564 get_remote_arch_state ();
566 return get_remote_state_raw ();
570 compare_pnums (const void *lhs_
, const void *rhs_
)
572 const struct packet_reg
* const *lhs
= lhs_
;
573 const struct packet_reg
* const *rhs
= rhs_
;
575 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
577 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
584 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
586 int regnum
, num_remote_regs
, offset
;
587 struct packet_reg
**remote_regs
;
589 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
591 struct packet_reg
*r
= ®s
[regnum
];
593 if (register_size (gdbarch
, regnum
) == 0)
594 /* Do not try to fetch zero-sized (placeholder) registers. */
597 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
602 /* Define the g/G packet format as the contents of each register
603 with a remote protocol number, in order of ascending protocol
606 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
607 * sizeof (struct packet_reg
*));
608 for (num_remote_regs
= 0, regnum
= 0;
609 regnum
< gdbarch_num_regs (gdbarch
);
611 if (regs
[regnum
].pnum
!= -1)
612 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
614 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
617 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
619 remote_regs
[regnum
]->in_g_packet
= 1;
620 remote_regs
[regnum
]->offset
= offset
;
621 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
627 /* Given the architecture described by GDBARCH, return the remote
628 protocol register's number and the register's offset in the g/G
629 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
630 If the target does not have a mapping for REGNUM, return false,
631 otherwise, return true. */
634 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
635 int *pnum
, int *poffset
)
638 struct packet_reg
*regs
;
639 struct cleanup
*old_chain
;
641 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
643 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
644 old_chain
= make_cleanup (xfree
, regs
);
646 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
648 *pnum
= regs
[regnum
].pnum
;
649 *poffset
= regs
[regnum
].offset
;
651 do_cleanups (old_chain
);
657 init_remote_state (struct gdbarch
*gdbarch
)
659 struct remote_state
*rs
= get_remote_state_raw ();
660 struct remote_arch_state
*rsa
;
662 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
664 /* Use the architecture to build a regnum<->pnum table, which will be
665 1:1 unless a feature set specifies otherwise. */
666 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
667 gdbarch_num_regs (gdbarch
),
670 /* Record the maximum possible size of the g packet - it may turn out
672 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
674 /* Default maximum number of characters in a packet body. Many
675 remote stubs have a hardwired buffer size of 400 bytes
676 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
677 as the maximum packet-size to ensure that the packet and an extra
678 NUL character can always fit in the buffer. This stops GDB
679 trashing stubs that try to squeeze an extra NUL into what is
680 already a full buffer (As of 1999-12-04 that was most stubs). */
681 rsa
->remote_packet_size
= 400 - 1;
683 /* This one is filled in when a ``g'' packet is received. */
684 rsa
->actual_register_packet_size
= 0;
686 /* Should rsa->sizeof_g_packet needs more space than the
687 default, adjust the size accordingly. Remember that each byte is
688 encoded as two characters. 32 is the overhead for the packet
689 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
690 (``$NN:G...#NN'') is a better guess, the below has been padded a
692 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
693 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
695 /* Make sure that the packet buffer is plenty big enough for
696 this architecture. */
697 if (rs
->buf_size
< rsa
->remote_packet_size
)
699 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
700 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
706 /* Return the current allowed size of a remote packet. This is
707 inferred from the current architecture, and should be used to
708 limit the length of outgoing packets. */
710 get_remote_packet_size (void)
712 struct remote_state
*rs
= get_remote_state ();
713 struct remote_arch_state
*rsa
= get_remote_arch_state ();
715 if (rs
->explicit_packet_size
)
716 return rs
->explicit_packet_size
;
718 return rsa
->remote_packet_size
;
721 static struct packet_reg
*
722 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
724 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
728 struct packet_reg
*r
= &rsa
->regs
[regnum
];
730 gdb_assert (r
->regnum
== regnum
);
735 static struct packet_reg
*
736 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
740 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
742 struct packet_reg
*r
= &rsa
->regs
[i
];
750 /* FIXME: graces/2002-08-08: These variables should eventually be
751 bound to an instance of the target object (as in gdbarch-tdep()),
752 when such a thing exists. */
754 /* This is set to the data address of the access causing the target
755 to stop for a watchpoint. */
756 static CORE_ADDR remote_watch_data_address
;
758 /* This is non-zero if target stopped for a watchpoint. */
759 static int remote_stopped_by_watchpoint_p
;
761 static struct target_ops remote_ops
;
763 static struct target_ops extended_remote_ops
;
765 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
766 ``forever'' still use the normal timeout mechanism. This is
767 currently used by the ASYNC code to guarentee that target reads
768 during the initial connect always time-out. Once getpkt has been
769 modified to return a timeout indication and, in turn
770 remote_wait()/wait_for_inferior() have gained a timeout parameter
772 static int wait_forever_enabled_p
= 1;
774 /* Allow the user to specify what sequence to send to the remote
775 when he requests a program interruption: Although ^C is usually
776 what remote systems expect (this is the default, here), it is
777 sometimes preferable to send a break. On other systems such
778 as the Linux kernel, a break followed by g, which is Magic SysRq g
779 is required in order to interrupt the execution. */
780 const char interrupt_sequence_control_c
[] = "Ctrl-C";
781 const char interrupt_sequence_break
[] = "BREAK";
782 const char interrupt_sequence_break_g
[] = "BREAK-g";
783 static const char *const interrupt_sequence_modes
[] =
785 interrupt_sequence_control_c
,
786 interrupt_sequence_break
,
787 interrupt_sequence_break_g
,
790 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
793 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
794 struct cmd_list_element
*c
,
797 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
798 fprintf_filtered (file
,
799 _("Send the ASCII ETX character (Ctrl-c) "
800 "to the remote target to interrupt the "
801 "execution of the program.\n"));
802 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
803 fprintf_filtered (file
,
804 _("send a break signal to the remote target "
805 "to interrupt the execution of the program.\n"));
806 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
807 fprintf_filtered (file
,
808 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
809 "the remote target to interrupt the execution "
810 "of Linux kernel.\n"));
812 internal_error (__FILE__
, __LINE__
,
813 _("Invalid value for interrupt_sequence_mode: %s."),
814 interrupt_sequence_mode
);
817 /* This boolean variable specifies whether interrupt_sequence is sent
818 to the remote target when gdb connects to it.
819 This is mostly needed when you debug the Linux kernel: The Linux kernel
820 expects BREAK g which is Magic SysRq g for connecting gdb. */
821 static int interrupt_on_connect
= 0;
823 /* This variable is used to implement the "set/show remotebreak" commands.
824 Since these commands are now deprecated in favor of "set/show remote
825 interrupt-sequence", it no longer has any effect on the code. */
826 static int remote_break
;
829 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
832 interrupt_sequence_mode
= interrupt_sequence_break
;
834 interrupt_sequence_mode
= interrupt_sequence_control_c
;
838 show_remotebreak (struct ui_file
*file
, int from_tty
,
839 struct cmd_list_element
*c
,
844 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
845 remote_open knows that we don't have a file open when the program
847 static struct serial
*remote_desc
= NULL
;
849 /* This variable sets the number of bits in an address that are to be
850 sent in a memory ("M" or "m") packet. Normally, after stripping
851 leading zeros, the entire address would be sent. This variable
852 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
853 initial implementation of remote.c restricted the address sent in
854 memory packets to ``host::sizeof long'' bytes - (typically 32
855 bits). Consequently, for 64 bit targets, the upper 32 bits of an
856 address was never sent. Since fixing this bug may cause a break in
857 some remote targets this variable is principly provided to
858 facilitate backward compatibility. */
860 static unsigned int remote_address_size
;
862 /* Temporary to track who currently owns the terminal. See
863 remote_terminal_* for more details. */
865 static int remote_async_terminal_ours_p
;
867 /* The executable file to use for "run" on the remote side. */
869 static char *remote_exec_file
= "";
872 /* User configurable variables for the number of characters in a
873 memory read/write packet. MIN (rsa->remote_packet_size,
874 rsa->sizeof_g_packet) is the default. Some targets need smaller
875 values (fifo overruns, et.al.) and some users need larger values
876 (speed up transfers). The variables ``preferred_*'' (the user
877 request), ``current_*'' (what was actually set) and ``forced_*''
878 (Positive - a soft limit, negative - a hard limit). */
880 struct memory_packet_config
887 /* Compute the current size of a read/write packet. Since this makes
888 use of ``actual_register_packet_size'' the computation is dynamic. */
891 get_memory_packet_size (struct memory_packet_config
*config
)
893 struct remote_state
*rs
= get_remote_state ();
894 struct remote_arch_state
*rsa
= get_remote_arch_state ();
896 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
897 law?) that some hosts don't cope very well with large alloca()
898 calls. Eventually the alloca() code will be replaced by calls to
899 xmalloc() and make_cleanups() allowing this restriction to either
900 be lifted or removed. */
901 #ifndef MAX_REMOTE_PACKET_SIZE
902 #define MAX_REMOTE_PACKET_SIZE 16384
904 /* NOTE: 20 ensures we can write at least one byte. */
905 #ifndef MIN_REMOTE_PACKET_SIZE
906 #define MIN_REMOTE_PACKET_SIZE 20
911 if (config
->size
<= 0)
912 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
914 what_they_get
= config
->size
;
918 what_they_get
= get_remote_packet_size ();
919 /* Limit the packet to the size specified by the user. */
921 && what_they_get
> config
->size
)
922 what_they_get
= config
->size
;
924 /* Limit it to the size of the targets ``g'' response unless we have
925 permission from the stub to use a larger packet size. */
926 if (rs
->explicit_packet_size
== 0
927 && rsa
->actual_register_packet_size
> 0
928 && what_they_get
> rsa
->actual_register_packet_size
)
929 what_they_get
= rsa
->actual_register_packet_size
;
931 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
932 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
933 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
934 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
936 /* Make sure there is room in the global buffer for this packet
937 (including its trailing NUL byte). */
938 if (rs
->buf_size
< what_they_get
+ 1)
940 rs
->buf_size
= 2 * what_they_get
;
941 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
944 return what_they_get
;
947 /* Update the size of a read/write packet. If they user wants
948 something really big then do a sanity check. */
951 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
953 int fixed_p
= config
->fixed_p
;
954 long size
= config
->size
;
957 error (_("Argument required (integer, `fixed' or `limited')."));
958 else if (strcmp (args
, "hard") == 0
959 || strcmp (args
, "fixed") == 0)
961 else if (strcmp (args
, "soft") == 0
962 || strcmp (args
, "limit") == 0)
968 size
= strtoul (args
, &end
, 0);
970 error (_("Invalid %s (bad syntax)."), config
->name
);
972 /* Instead of explicitly capping the size of a packet to
973 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
974 instead allowed to set the size to something arbitrarily
976 if (size
> MAX_REMOTE_PACKET_SIZE
)
977 error (_("Invalid %s (too large)."), config
->name
);
981 if (fixed_p
&& !config
->fixed_p
)
983 if (! query (_("The target may not be able to correctly handle a %s\n"
984 "of %ld bytes. Change the packet size? "),
986 error (_("Packet size not changed."));
988 /* Update the config. */
989 config
->fixed_p
= fixed_p
;
994 show_memory_packet_size (struct memory_packet_config
*config
)
996 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
998 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
999 get_memory_packet_size (config
));
1001 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1002 get_memory_packet_size (config
));
1005 static struct memory_packet_config memory_write_packet_config
=
1007 "memory-write-packet-size",
1011 set_memory_write_packet_size (char *args
, int from_tty
)
1013 set_memory_packet_size (args
, &memory_write_packet_config
);
1017 show_memory_write_packet_size (char *args
, int from_tty
)
1019 show_memory_packet_size (&memory_write_packet_config
);
1023 get_memory_write_packet_size (void)
1025 return get_memory_packet_size (&memory_write_packet_config
);
1028 static struct memory_packet_config memory_read_packet_config
=
1030 "memory-read-packet-size",
1034 set_memory_read_packet_size (char *args
, int from_tty
)
1036 set_memory_packet_size (args
, &memory_read_packet_config
);
1040 show_memory_read_packet_size (char *args
, int from_tty
)
1042 show_memory_packet_size (&memory_read_packet_config
);
1046 get_memory_read_packet_size (void)
1048 long size
= get_memory_packet_size (&memory_read_packet_config
);
1050 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1051 extra buffer size argument before the memory read size can be
1052 increased beyond this. */
1053 if (size
> get_remote_packet_size ())
1054 size
= get_remote_packet_size ();
1059 /* Generic configuration support for packets the stub optionally
1060 supports. Allows the user to specify the use of the packet as well
1061 as allowing GDB to auto-detect support in the remote stub. */
1065 PACKET_SUPPORT_UNKNOWN
= 0,
1070 struct packet_config
1074 enum auto_boolean detect
;
1075 enum packet_support support
;
1078 /* Analyze a packet's return value and update the packet config
1089 update_packet_config (struct packet_config
*config
)
1091 switch (config
->detect
)
1093 case AUTO_BOOLEAN_TRUE
:
1094 config
->support
= PACKET_ENABLE
;
1096 case AUTO_BOOLEAN_FALSE
:
1097 config
->support
= PACKET_DISABLE
;
1099 case AUTO_BOOLEAN_AUTO
:
1100 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1106 show_packet_config_cmd (struct packet_config
*config
)
1108 char *support
= "internal-error";
1110 switch (config
->support
)
1113 support
= "enabled";
1115 case PACKET_DISABLE
:
1116 support
= "disabled";
1118 case PACKET_SUPPORT_UNKNOWN
:
1119 support
= "unknown";
1122 switch (config
->detect
)
1124 case AUTO_BOOLEAN_AUTO
:
1125 printf_filtered (_("Support for the `%s' packet "
1126 "is auto-detected, currently %s.\n"),
1127 config
->name
, support
);
1129 case AUTO_BOOLEAN_TRUE
:
1130 case AUTO_BOOLEAN_FALSE
:
1131 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1132 config
->name
, support
);
1138 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1139 const char *title
, int legacy
)
1145 config
->name
= name
;
1146 config
->title
= title
;
1147 config
->detect
= AUTO_BOOLEAN_AUTO
;
1148 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1149 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1151 show_doc
= xstrprintf ("Show current use of remote "
1152 "protocol `%s' (%s) packet",
1154 /* set/show TITLE-packet {auto,on,off} */
1155 cmd_name
= xstrprintf ("%s-packet", title
);
1156 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1157 &config
->detect
, set_doc
,
1158 show_doc
, NULL
, /* help_doc */
1159 set_remote_protocol_packet_cmd
,
1160 show_remote_protocol_packet_cmd
,
1161 &remote_set_cmdlist
, &remote_show_cmdlist
);
1162 /* The command code copies the documentation strings. */
1165 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1170 legacy_name
= xstrprintf ("%s-packet", name
);
1171 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1172 &remote_set_cmdlist
);
1173 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1174 &remote_show_cmdlist
);
1178 static enum packet_result
1179 packet_check_result (const char *buf
)
1183 /* The stub recognized the packet request. Check that the
1184 operation succeeded. */
1186 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1188 /* "Enn" - definitly an error. */
1189 return PACKET_ERROR
;
1191 /* Always treat "E." as an error. This will be used for
1192 more verbose error messages, such as E.memtypes. */
1193 if (buf
[0] == 'E' && buf
[1] == '.')
1194 return PACKET_ERROR
;
1196 /* The packet may or may not be OK. Just assume it is. */
1200 /* The stub does not support the packet. */
1201 return PACKET_UNKNOWN
;
1204 static enum packet_result
1205 packet_ok (const char *buf
, struct packet_config
*config
)
1207 enum packet_result result
;
1209 result
= packet_check_result (buf
);
1214 /* The stub recognized the packet request. */
1215 switch (config
->support
)
1217 case PACKET_SUPPORT_UNKNOWN
:
1219 fprintf_unfiltered (gdb_stdlog
,
1220 "Packet %s (%s) is supported\n",
1221 config
->name
, config
->title
);
1222 config
->support
= PACKET_ENABLE
;
1224 case PACKET_DISABLE
:
1225 internal_error (__FILE__
, __LINE__
,
1226 _("packet_ok: attempt to use a disabled packet"));
1232 case PACKET_UNKNOWN
:
1233 /* The stub does not support the packet. */
1234 switch (config
->support
)
1237 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1238 /* If the stub previously indicated that the packet was
1239 supported then there is a protocol error.. */
1240 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1241 config
->name
, config
->title
);
1243 /* The user set it wrong. */
1244 error (_("Enabled packet %s (%s) not recognized by stub"),
1245 config
->name
, config
->title
);
1247 case PACKET_SUPPORT_UNKNOWN
:
1249 fprintf_unfiltered (gdb_stdlog
,
1250 "Packet %s (%s) is NOT supported\n",
1251 config
->name
, config
->title
);
1252 config
->support
= PACKET_DISABLE
;
1254 case PACKET_DISABLE
:
1276 PACKET_vFile_pwrite
,
1278 PACKET_vFile_unlink
,
1279 PACKET_vFile_readlink
,
1281 PACKET_qXfer_features
,
1282 PACKET_qXfer_libraries
,
1283 PACKET_qXfer_libraries_svr4
,
1284 PACKET_qXfer_memory_map
,
1285 PACKET_qXfer_spu_read
,
1286 PACKET_qXfer_spu_write
,
1287 PACKET_qXfer_osdata
,
1288 PACKET_qXfer_threads
,
1289 PACKET_qXfer_statictrace_read
,
1290 PACKET_qXfer_traceframe_info
,
1296 PACKET_QPassSignals
,
1297 PACKET_QProgramSignals
,
1298 PACKET_qSearch_memory
,
1301 PACKET_QStartNoAckMode
,
1303 PACKET_qXfer_siginfo_read
,
1304 PACKET_qXfer_siginfo_write
,
1306 PACKET_ConditionalTracepoints
,
1307 PACKET_ConditionalBreakpoints
,
1308 PACKET_BreakpointCommands
,
1309 PACKET_FastTracepoints
,
1310 PACKET_StaticTracepoints
,
1311 PACKET_InstallInTrace
,
1314 PACKET_TracepointSource
,
1317 PACKET_QDisableRandomization
,
1319 PACKET_QTBuffer_size
,
1322 PACKET_qXfer_btrace
,
1326 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1329 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1330 struct cmd_list_element
*c
)
1332 struct packet_config
*packet
;
1334 for (packet
= remote_protocol_packets
;
1335 packet
< &remote_protocol_packets
[PACKET_MAX
];
1338 if (&packet
->detect
== c
->var
)
1340 update_packet_config (packet
);
1344 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1349 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1350 struct cmd_list_element
*c
,
1353 struct packet_config
*packet
;
1355 for (packet
= remote_protocol_packets
;
1356 packet
< &remote_protocol_packets
[PACKET_MAX
];
1359 if (&packet
->detect
== c
->var
)
1361 show_packet_config_cmd (packet
);
1365 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1369 /* Should we try one of the 'Z' requests? */
1373 Z_PACKET_SOFTWARE_BP
,
1374 Z_PACKET_HARDWARE_BP
,
1381 /* For compatibility with older distributions. Provide a ``set remote
1382 Z-packet ...'' command that updates all the Z packet types. */
1384 static enum auto_boolean remote_Z_packet_detect
;
1387 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1388 struct cmd_list_element
*c
)
1392 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1394 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1395 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1400 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1401 struct cmd_list_element
*c
,
1406 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1408 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1412 /* Should we try the 'ThreadInfo' query packet?
1414 This variable (NOT available to the user: auto-detect only!)
1415 determines whether GDB will use the new, simpler "ThreadInfo"
1416 query or the older, more complex syntax for thread queries.
1417 This is an auto-detect variable (set to true at each connect,
1418 and set to false when the target fails to recognize it). */
1420 static int use_threadinfo_query
;
1421 static int use_threadextra_query
;
1423 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1424 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1425 static struct async_signal_handler
*async_sigint_remote_token
;
1428 /* Asynchronous signal handle registered as event loop source for
1429 when we have pending events ready to be passed to the core. */
1431 static struct async_event_handler
*remote_async_inferior_event_token
;
1435 static ptid_t magic_null_ptid
;
1436 static ptid_t not_sent_ptid
;
1437 static ptid_t any_thread_ptid
;
1439 /* These are the threads which we last sent to the remote system. The
1440 TID member will be -1 for all or -2 for not sent yet. */
1442 static ptid_t general_thread
;
1443 static ptid_t continue_thread
;
1445 /* This is the traceframe which we last selected on the remote system.
1446 It will be -1 if no traceframe is selected. */
1447 static int remote_traceframe_number
= -1;
1449 /* Find out if the stub attached to PID (and hence GDB should offer to
1450 detach instead of killing it when bailing out). */
1453 remote_query_attached (int pid
)
1455 struct remote_state
*rs
= get_remote_state ();
1456 size_t size
= get_remote_packet_size ();
1458 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1461 if (remote_multi_process_p (rs
))
1462 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1464 xsnprintf (rs
->buf
, size
, "qAttached");
1467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1469 switch (packet_ok (rs
->buf
,
1470 &remote_protocol_packets
[PACKET_qAttached
]))
1473 if (strcmp (rs
->buf
, "1") == 0)
1477 warning (_("Remote failure reply: %s"), rs
->buf
);
1479 case PACKET_UNKNOWN
:
1486 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1487 has been invented by GDB, instead of reported by the target. Since
1488 we can be connected to a remote system before before knowing about
1489 any inferior, mark the target with execution when we find the first
1490 inferior. If ATTACHED is 1, then we had just attached to this
1491 inferior. If it is 0, then we just created this inferior. If it
1492 is -1, then try querying the remote stub to find out if it had
1493 attached to the inferior or not. */
1495 static struct inferior
*
1496 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1498 struct inferior
*inf
;
1500 /* Check whether this process we're learning about is to be
1501 considered attached, or if is to be considered to have been
1502 spawned by the stub. */
1504 attached
= remote_query_attached (pid
);
1506 if (gdbarch_has_global_solist (target_gdbarch ()))
1508 /* If the target shares code across all inferiors, then every
1509 attach adds a new inferior. */
1510 inf
= add_inferior (pid
);
1512 /* ... and every inferior is bound to the same program space.
1513 However, each inferior may still have its own address
1515 inf
->aspace
= maybe_new_address_space ();
1516 inf
->pspace
= current_program_space
;
1520 /* In the traditional debugging scenario, there's a 1-1 match
1521 between program/address spaces. We simply bind the inferior
1522 to the program space's address space. */
1523 inf
= current_inferior ();
1524 inferior_appeared (inf
, pid
);
1527 inf
->attach_flag
= attached
;
1528 inf
->fake_pid_p
= fake_pid_p
;
1533 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1534 according to RUNNING. */
1537 remote_add_thread (ptid_t ptid
, int running
)
1541 set_executing (ptid
, running
);
1542 set_running (ptid
, running
);
1545 /* Come here when we learn about a thread id from the remote target.
1546 It may be the first time we hear about such thread, so take the
1547 opportunity to add it to GDB's thread list. In case this is the
1548 first time we're noticing its corresponding inferior, add it to
1549 GDB's inferior list as well. */
1552 remote_notice_new_inferior (ptid_t currthread
, int running
)
1554 /* If this is a new thread, add it to GDB's thread list.
1555 If we leave it up to WFI to do this, bad things will happen. */
1557 if (in_thread_list (currthread
) && is_exited (currthread
))
1559 /* We're seeing an event on a thread id we knew had exited.
1560 This has to be a new thread reusing the old id. Add it. */
1561 remote_add_thread (currthread
, running
);
1565 if (!in_thread_list (currthread
))
1567 struct inferior
*inf
= NULL
;
1568 int pid
= ptid_get_pid (currthread
);
1570 if (ptid_is_pid (inferior_ptid
)
1571 && pid
== ptid_get_pid (inferior_ptid
))
1573 /* inferior_ptid has no thread member yet. This can happen
1574 with the vAttach -> remote_wait,"TAAthread:" path if the
1575 stub doesn't support qC. This is the first stop reported
1576 after an attach, so this is the main thread. Update the
1577 ptid in the thread list. */
1578 if (in_thread_list (pid_to_ptid (pid
)))
1579 thread_change_ptid (inferior_ptid
, currthread
);
1582 remote_add_thread (currthread
, running
);
1583 inferior_ptid
= currthread
;
1588 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1590 /* inferior_ptid is not set yet. This can happen with the
1591 vRun -> remote_wait,"TAAthread:" path if the stub
1592 doesn't support qC. This is the first stop reported
1593 after an attach, so this is the main thread. Update the
1594 ptid in the thread list. */
1595 thread_change_ptid (inferior_ptid
, currthread
);
1599 /* When connecting to a target remote, or to a target
1600 extended-remote which already was debugging an inferior, we
1601 may not know about it yet. Add it before adding its child
1602 thread, so notifications are emitted in a sensible order. */
1603 if (!in_inferior_list (ptid_get_pid (currthread
)))
1605 struct remote_state
*rs
= get_remote_state ();
1606 int fake_pid_p
= !remote_multi_process_p (rs
);
1608 inf
= remote_add_inferior (fake_pid_p
,
1609 ptid_get_pid (currthread
), -1);
1612 /* This is really a new thread. Add it. */
1613 remote_add_thread (currthread
, running
);
1615 /* If we found a new inferior, let the common code do whatever
1616 it needs to with it (e.g., read shared libraries, insert
1619 notice_new_inferior (currthread
, running
, 0);
1623 /* Return the private thread data, creating it if necessary. */
1625 static struct private_thread_info
*
1626 demand_private_info (ptid_t ptid
)
1628 struct thread_info
*info
= find_thread_ptid (ptid
);
1634 info
->private = xmalloc (sizeof (*(info
->private)));
1635 info
->private_dtor
= free_private_thread_info
;
1636 info
->private->core
= -1;
1637 info
->private->extra
= 0;
1640 return info
->private;
1643 /* Call this function as a result of
1644 1) A halt indication (T packet) containing a thread id
1645 2) A direct query of currthread
1646 3) Successful execution of set thread */
1649 record_currthread (ptid_t currthread
)
1651 general_thread
= currthread
;
1654 static char *last_pass_packet
;
1656 /* If 'QPassSignals' is supported, tell the remote stub what signals
1657 it can simply pass through to the inferior without reporting. */
1660 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1662 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1664 char *pass_packet
, *p
;
1667 gdb_assert (numsigs
< 256);
1668 for (i
= 0; i
< numsigs
; i
++)
1670 if (pass_signals
[i
])
1673 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1674 strcpy (pass_packet
, "QPassSignals:");
1675 p
= pass_packet
+ strlen (pass_packet
);
1676 for (i
= 0; i
< numsigs
; i
++)
1678 if (pass_signals
[i
])
1681 *p
++ = tohex (i
>> 4);
1682 *p
++ = tohex (i
& 15);
1691 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1693 struct remote_state
*rs
= get_remote_state ();
1694 char *buf
= rs
->buf
;
1696 putpkt (pass_packet
);
1697 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1698 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1699 if (last_pass_packet
)
1700 xfree (last_pass_packet
);
1701 last_pass_packet
= pass_packet
;
1704 xfree (pass_packet
);
1708 /* The last QProgramSignals packet sent to the target. We bypass
1709 sending a new program signals list down to the target if the new
1710 packet is exactly the same as the last we sent. IOW, we only let
1711 the target know about program signals list changes. */
1713 static char *last_program_signals_packet
;
1715 /* If 'QProgramSignals' is supported, tell the remote stub what
1716 signals it should pass through to the inferior when detaching. */
1719 remote_program_signals (int numsigs
, unsigned char *signals
)
1721 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1726 gdb_assert (numsigs
< 256);
1727 for (i
= 0; i
< numsigs
; i
++)
1732 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1733 strcpy (packet
, "QProgramSignals:");
1734 p
= packet
+ strlen (packet
);
1735 for (i
= 0; i
< numsigs
; i
++)
1737 if (signal_pass_state (i
))
1740 *p
++ = tohex (i
>> 4);
1741 *p
++ = tohex (i
& 15);
1750 if (!last_program_signals_packet
1751 || strcmp (last_program_signals_packet
, packet
) != 0)
1753 struct remote_state
*rs
= get_remote_state ();
1754 char *buf
= rs
->buf
;
1757 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1758 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1759 xfree (last_program_signals_packet
);
1760 last_program_signals_packet
= packet
;
1767 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1768 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1769 thread. If GEN is set, set the general thread, if not, then set
1770 the step/continue thread. */
1772 set_thread (struct ptid ptid
, int gen
)
1774 struct remote_state
*rs
= get_remote_state ();
1775 ptid_t state
= gen
? general_thread
: continue_thread
;
1776 char *buf
= rs
->buf
;
1777 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1779 if (ptid_equal (state
, ptid
))
1783 *buf
++ = gen
? 'g' : 'c';
1784 if (ptid_equal (ptid
, magic_null_ptid
))
1785 xsnprintf (buf
, endbuf
- buf
, "0");
1786 else if (ptid_equal (ptid
, any_thread_ptid
))
1787 xsnprintf (buf
, endbuf
- buf
, "0");
1788 else if (ptid_equal (ptid
, minus_one_ptid
))
1789 xsnprintf (buf
, endbuf
- buf
, "-1");
1791 write_ptid (buf
, endbuf
, ptid
);
1793 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1795 general_thread
= ptid
;
1797 continue_thread
= ptid
;
1801 set_general_thread (struct ptid ptid
)
1803 set_thread (ptid
, 1);
1807 set_continue_thread (struct ptid ptid
)
1809 set_thread (ptid
, 0);
1812 /* Change the remote current process. Which thread within the process
1813 ends up selected isn't important, as long as it is the same process
1814 as what INFERIOR_PTID points to.
1816 This comes from that fact that there is no explicit notion of
1817 "selected process" in the protocol. The selected process for
1818 general operations is the process the selected general thread
1822 set_general_process (void)
1824 struct remote_state
*rs
= get_remote_state ();
1826 /* If the remote can't handle multiple processes, don't bother. */
1827 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1830 /* We only need to change the remote current thread if it's pointing
1831 at some other process. */
1832 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1833 set_general_thread (inferior_ptid
);
1837 /* Return nonzero if the thread PTID is still alive on the remote
1841 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1843 struct remote_state
*rs
= get_remote_state ();
1846 if (ptid_equal (ptid
, magic_null_ptid
))
1847 /* The main thread is always alive. */
1850 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1851 /* The main thread is always alive. This can happen after a
1852 vAttach, if the remote side doesn't support
1857 endp
= rs
->buf
+ get_remote_packet_size ();
1860 write_ptid (p
, endp
, ptid
);
1863 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1864 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1867 /* About these extended threadlist and threadinfo packets. They are
1868 variable length packets but, the fields within them are often fixed
1869 length. They are redundent enough to send over UDP as is the
1870 remote protocol in general. There is a matching unit test module
1873 #define OPAQUETHREADBYTES 8
1875 /* a 64 bit opaque identifier */
1876 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1878 /* WARNING: This threadref data structure comes from the remote O.S.,
1879 libstub protocol encoding, and remote.c. It is not particularly
1882 /* Right now, the internal structure is int. We want it to be bigger.
1883 Plan to fix this. */
1885 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1887 /* gdb_ext_thread_info is an internal GDB data structure which is
1888 equivalent to the reply of the remote threadinfo packet. */
1890 struct gdb_ext_thread_info
1892 threadref threadid
; /* External form of thread reference. */
1893 int active
; /* Has state interesting to GDB?
1895 char display
[256]; /* Brief state display, name,
1896 blocked/suspended. */
1897 char shortname
[32]; /* To be used to name threads. */
1898 char more_display
[256]; /* Long info, statistics, queue depth,
1902 /* The volume of remote transfers can be limited by submitting
1903 a mask containing bits specifying the desired information.
1904 Use a union of these values as the 'selection' parameter to
1905 get_thread_info. FIXME: Make these TAG names more thread specific. */
1907 #define TAG_THREADID 1
1908 #define TAG_EXISTS 2
1909 #define TAG_DISPLAY 4
1910 #define TAG_THREADNAME 8
1911 #define TAG_MOREDISPLAY 16
1913 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1915 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1917 static char *unpack_nibble (char *buf
, int *val
);
1919 static char *pack_nibble (char *buf
, int nibble
);
1921 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1923 static char *unpack_byte (char *buf
, int *value
);
1925 static char *pack_int (char *buf
, int value
);
1927 static char *unpack_int (char *buf
, int *value
);
1929 static char *unpack_string (char *src
, char *dest
, int length
);
1931 static char *pack_threadid (char *pkt
, threadref
*id
);
1933 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1935 void int_to_threadref (threadref
*id
, int value
);
1937 static int threadref_to_int (threadref
*ref
);
1939 static void copy_threadref (threadref
*dest
, threadref
*src
);
1941 static int threadmatch (threadref
*dest
, threadref
*src
);
1943 static char *pack_threadinfo_request (char *pkt
, int mode
,
1946 static int remote_unpack_thread_info_response (char *pkt
,
1947 threadref
*expectedref
,
1948 struct gdb_ext_thread_info
1952 static int remote_get_threadinfo (threadref
*threadid
,
1953 int fieldset
, /*TAG mask */
1954 struct gdb_ext_thread_info
*info
);
1956 static char *pack_threadlist_request (char *pkt
, int startflag
,
1958 threadref
*nextthread
);
1960 static int parse_threadlist_response (char *pkt
,
1962 threadref
*original_echo
,
1963 threadref
*resultlist
,
1966 static int remote_get_threadlist (int startflag
,
1967 threadref
*nextthread
,
1971 threadref
*threadlist
);
1973 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1975 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1976 void *context
, int looplimit
);
1978 static int remote_newthread_step (threadref
*ref
, void *context
);
1981 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1982 buffer we're allowed to write to. Returns
1983 BUF+CHARACTERS_WRITTEN. */
1986 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1989 struct remote_state
*rs
= get_remote_state ();
1991 if (remote_multi_process_p (rs
))
1993 pid
= ptid_get_pid (ptid
);
1995 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1997 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1999 tid
= ptid_get_tid (ptid
);
2001 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2003 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2008 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2009 passed the last parsed char. Returns null_ptid on error. */
2012 read_ptid (char *buf
, char **obuf
)
2016 ULONGEST pid
= 0, tid
= 0;
2020 /* Multi-process ptid. */
2021 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2023 error (_("invalid remote ptid: %s"), p
);
2026 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2029 return ptid_build (pid
, 0, tid
);
2032 /* No multi-process. Just a tid. */
2033 pp
= unpack_varlen_hex (p
, &tid
);
2035 /* Since the stub is not sending a process id, then default to
2036 what's in inferior_ptid, unless it's null at this point. If so,
2037 then since there's no way to know the pid of the reported
2038 threads, use the magic number. */
2039 if (ptid_equal (inferior_ptid
, null_ptid
))
2040 pid
= ptid_get_pid (magic_null_ptid
);
2042 pid
= ptid_get_pid (inferior_ptid
);
2046 return ptid_build (pid
, 0, tid
);
2049 /* Encode 64 bits in 16 chars of hex. */
2051 static const char hexchars
[] = "0123456789abcdef";
2054 ishex (int ch
, int *val
)
2056 if ((ch
>= 'a') && (ch
<= 'f'))
2058 *val
= ch
- 'a' + 10;
2061 if ((ch
>= 'A') && (ch
<= 'F'))
2063 *val
= ch
- 'A' + 10;
2066 if ((ch
>= '0') && (ch
<= '9'))
2077 if (ch
>= 'a' && ch
<= 'f')
2078 return ch
- 'a' + 10;
2079 if (ch
>= '0' && ch
<= '9')
2081 if (ch
>= 'A' && ch
<= 'F')
2082 return ch
- 'A' + 10;
2087 stub_unpack_int (char *buff
, int fieldlength
)
2094 nibble
= stubhex (*buff
++);
2098 retval
= retval
<< 4;
2104 unpack_varlen_hex (char *buff
, /* packet to parse */
2108 ULONGEST retval
= 0;
2110 while (ishex (*buff
, &nibble
))
2113 retval
= retval
<< 4;
2114 retval
|= nibble
& 0x0f;
2121 unpack_nibble (char *buf
, int *val
)
2123 *val
= fromhex (*buf
++);
2128 pack_nibble (char *buf
, int nibble
)
2130 *buf
++ = hexchars
[(nibble
& 0x0f)];
2135 pack_hex_byte (char *pkt
, int byte
)
2137 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2138 *pkt
++ = hexchars
[(byte
& 0xf)];
2143 unpack_byte (char *buf
, int *value
)
2145 *value
= stub_unpack_int (buf
, 2);
2150 pack_int (char *buf
, int value
)
2152 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2153 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2154 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2155 buf
= pack_hex_byte (buf
, (value
& 0xff));
2160 unpack_int (char *buf
, int *value
)
2162 *value
= stub_unpack_int (buf
, 8);
2166 #if 0 /* Currently unused, uncomment when needed. */
2167 static char *pack_string (char *pkt
, char *string
);
2170 pack_string (char *pkt
, char *string
)
2175 len
= strlen (string
);
2177 len
= 200; /* Bigger than most GDB packets, junk??? */
2178 pkt
= pack_hex_byte (pkt
, len
);
2182 if ((ch
== '\0') || (ch
== '#'))
2183 ch
= '*'; /* Protect encapsulation. */
2188 #endif /* 0 (unused) */
2191 unpack_string (char *src
, char *dest
, int length
)
2200 pack_threadid (char *pkt
, threadref
*id
)
2203 unsigned char *altid
;
2205 altid
= (unsigned char *) id
;
2206 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2208 pkt
= pack_hex_byte (pkt
, *altid
++);
2214 unpack_threadid (char *inbuf
, threadref
*id
)
2217 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2220 altref
= (char *) id
;
2222 while (inbuf
< limit
)
2224 x
= stubhex (*inbuf
++);
2225 y
= stubhex (*inbuf
++);
2226 *altref
++ = (x
<< 4) | y
;
2231 /* Externally, threadrefs are 64 bits but internally, they are still
2232 ints. This is due to a mismatch of specifications. We would like
2233 to use 64bit thread references internally. This is an adapter
2237 int_to_threadref (threadref
*id
, int value
)
2239 unsigned char *scan
;
2241 scan
= (unsigned char *) id
;
2247 *scan
++ = (value
>> 24) & 0xff;
2248 *scan
++ = (value
>> 16) & 0xff;
2249 *scan
++ = (value
>> 8) & 0xff;
2250 *scan
++ = (value
& 0xff);
2254 threadref_to_int (threadref
*ref
)
2257 unsigned char *scan
;
2263 value
= (value
<< 8) | ((*scan
++) & 0xff);
2268 copy_threadref (threadref
*dest
, threadref
*src
)
2271 unsigned char *csrc
, *cdest
;
2273 csrc
= (unsigned char *) src
;
2274 cdest
= (unsigned char *) dest
;
2281 threadmatch (threadref
*dest
, threadref
*src
)
2283 /* Things are broken right now, so just assume we got a match. */
2285 unsigned char *srcp
, *destp
;
2287 srcp
= (char *) src
;
2288 destp
= (char *) dest
;
2292 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2299 threadid:1, # always request threadid
2306 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2309 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2311 *pkt
++ = 'q'; /* Info Query */
2312 *pkt
++ = 'P'; /* process or thread info */
2313 pkt
= pack_int (pkt
, mode
); /* mode */
2314 pkt
= pack_threadid (pkt
, id
); /* threadid */
2315 *pkt
= '\0'; /* terminate */
2319 /* These values tag the fields in a thread info response packet. */
2320 /* Tagging the fields allows us to request specific fields and to
2321 add more fields as time goes by. */
2323 #define TAG_THREADID 1 /* Echo the thread identifier. */
2324 #define TAG_EXISTS 2 /* Is this process defined enough to
2325 fetch registers and its stack? */
2326 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2327 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2328 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2332 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2333 struct gdb_ext_thread_info
*info
)
2335 struct remote_state
*rs
= get_remote_state ();
2339 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2342 /* info->threadid = 0; FIXME: implement zero_threadref. */
2344 info
->display
[0] = '\0';
2345 info
->shortname
[0] = '\0';
2346 info
->more_display
[0] = '\0';
2348 /* Assume the characters indicating the packet type have been
2350 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2351 pkt
= unpack_threadid (pkt
, &ref
);
2354 warning (_("Incomplete response to threadinfo request."));
2355 if (!threadmatch (&ref
, expectedref
))
2356 { /* This is an answer to a different request. */
2357 warning (_("ERROR RMT Thread info mismatch."));
2360 copy_threadref (&info
->threadid
, &ref
);
2362 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2364 /* Packets are terminated with nulls. */
2365 while ((pkt
< limit
) && mask
&& *pkt
)
2367 pkt
= unpack_int (pkt
, &tag
); /* tag */
2368 pkt
= unpack_byte (pkt
, &length
); /* length */
2369 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2371 warning (_("ERROR RMT: threadinfo tag mismatch."));
2375 if (tag
== TAG_THREADID
)
2379 warning (_("ERROR RMT: length of threadid is not 16."));
2383 pkt
= unpack_threadid (pkt
, &ref
);
2384 mask
= mask
& ~TAG_THREADID
;
2387 if (tag
== TAG_EXISTS
)
2389 info
->active
= stub_unpack_int (pkt
, length
);
2391 mask
= mask
& ~(TAG_EXISTS
);
2394 warning (_("ERROR RMT: 'exists' length too long."));
2400 if (tag
== TAG_THREADNAME
)
2402 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2403 mask
= mask
& ~TAG_THREADNAME
;
2406 if (tag
== TAG_DISPLAY
)
2408 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2409 mask
= mask
& ~TAG_DISPLAY
;
2412 if (tag
== TAG_MOREDISPLAY
)
2414 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2415 mask
= mask
& ~TAG_MOREDISPLAY
;
2418 warning (_("ERROR RMT: unknown thread info tag."));
2419 break; /* Not a tag we know about. */
2425 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2426 struct gdb_ext_thread_info
*info
)
2428 struct remote_state
*rs
= get_remote_state ();
2431 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2433 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2435 if (rs
->buf
[0] == '\0')
2438 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2443 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2446 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2447 threadref
*nextthread
)
2449 *pkt
++ = 'q'; /* info query packet */
2450 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2451 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2452 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2453 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2458 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2461 parse_threadlist_response (char *pkt
, int result_limit
,
2462 threadref
*original_echo
, threadref
*resultlist
,
2465 struct remote_state
*rs
= get_remote_state ();
2467 int count
, resultcount
, done
;
2470 /* Assume the 'q' and 'M chars have been stripped. */
2471 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2472 /* done parse past here */
2473 pkt
= unpack_byte (pkt
, &count
); /* count field */
2474 pkt
= unpack_nibble (pkt
, &done
);
2475 /* The first threadid is the argument threadid. */
2476 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2477 while ((count
-- > 0) && (pkt
< limit
))
2479 pkt
= unpack_threadid (pkt
, resultlist
++);
2480 if (resultcount
++ >= result_limit
)
2489 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2490 int *done
, int *result_count
, threadref
*threadlist
)
2492 struct remote_state
*rs
= get_remote_state ();
2493 static threadref echo_nextthread
;
2496 /* Trancate result limit to be smaller than the packet size. */
2497 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2498 >= get_remote_packet_size ())
2499 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2501 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2503 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2505 if (*rs
->buf
== '\0')
2509 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2512 if (!threadmatch (&echo_nextthread
, nextthread
))
2514 /* FIXME: This is a good reason to drop the packet. */
2515 /* Possably, there is a duplicate response. */
2517 retransmit immediatly - race conditions
2518 retransmit after timeout - yes
2520 wait for packet, then exit
2522 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2523 return 0; /* I choose simply exiting. */
2525 if (*result_count
<= 0)
2529 warning (_("RMT ERROR : failed to get remote thread list."));
2532 return result
; /* break; */
2534 if (*result_count
> result_limit
)
2537 warning (_("RMT ERROR: threadlist response longer than requested."));
2543 /* This is the interface between remote and threads, remotes upper
2546 /* remote_find_new_threads retrieves the thread list and for each
2547 thread in the list, looks up the thread in GDB's internal list,
2548 adding the thread if it does not already exist. This involves
2549 getting partial thread lists from the remote target so, polling the
2550 quit_flag is required. */
2553 /* About this many threadisds fit in a packet. */
2555 #define MAXTHREADLISTRESULTS 32
2558 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2561 int done
, i
, result_count
;
2565 static threadref nextthread
;
2566 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2571 if (loopcount
++ > looplimit
)
2574 warning (_("Remote fetch threadlist -infinite loop-."));
2577 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2578 &done
, &result_count
, resultthreadlist
))
2583 /* Clear for later iterations. */
2585 /* Setup to resume next batch of thread references, set nextthread. */
2586 if (result_count
>= 1)
2587 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2589 while (result_count
--)
2590 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2597 remote_newthread_step (threadref
*ref
, void *context
)
2599 int pid
= ptid_get_pid (inferior_ptid
);
2600 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2602 if (!in_thread_list (ptid
))
2604 return 1; /* continue iterator */
2607 #define CRAZY_MAX_THREADS 1000
2610 remote_current_thread (ptid_t oldpid
)
2612 struct remote_state
*rs
= get_remote_state ();
2615 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2616 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2617 return read_ptid (&rs
->buf
[2], NULL
);
2622 /* Find new threads for info threads command.
2623 * Original version, using John Metzler's thread protocol.
2627 remote_find_new_threads (void)
2629 remote_threadlist_iterator (remote_newthread_step
, 0,
2633 #if defined(HAVE_LIBEXPAT)
2635 typedef struct thread_item
2641 DEF_VEC_O(thread_item_t
);
2643 struct threads_parsing_context
2645 VEC (thread_item_t
) *items
;
2649 start_thread (struct gdb_xml_parser
*parser
,
2650 const struct gdb_xml_element
*element
,
2651 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2653 struct threads_parsing_context
*data
= user_data
;
2655 struct thread_item item
;
2657 struct gdb_xml_value
*attr
;
2659 id
= xml_find_attribute (attributes
, "id")->value
;
2660 item
.ptid
= read_ptid (id
, NULL
);
2662 attr
= xml_find_attribute (attributes
, "core");
2664 item
.core
= *(ULONGEST
*) attr
->value
;
2670 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2674 end_thread (struct gdb_xml_parser
*parser
,
2675 const struct gdb_xml_element
*element
,
2676 void *user_data
, const char *body_text
)
2678 struct threads_parsing_context
*data
= user_data
;
2680 if (body_text
&& *body_text
)
2681 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2684 const struct gdb_xml_attribute thread_attributes
[] = {
2685 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2686 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2687 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2690 const struct gdb_xml_element thread_children
[] = {
2691 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2694 const struct gdb_xml_element threads_children
[] = {
2695 { "thread", thread_attributes
, thread_children
,
2696 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2697 start_thread
, end_thread
},
2698 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2701 const struct gdb_xml_element threads_elements
[] = {
2702 { "threads", NULL
, threads_children
,
2703 GDB_XML_EF_NONE
, NULL
, NULL
},
2704 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2707 /* Discard the contents of the constructed thread info context. */
2710 clear_threads_parsing_context (void *p
)
2712 struct threads_parsing_context
*context
= p
;
2714 struct thread_item
*item
;
2716 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2717 xfree (item
->extra
);
2719 VEC_free (thread_item_t
, context
->items
);
2725 * Find all threads for info threads command.
2726 * Uses new thread protocol contributed by Cisco.
2727 * Falls back and attempts to use the older method (above)
2728 * if the target doesn't respond to the new method.
2732 remote_threads_info (struct target_ops
*ops
)
2734 struct remote_state
*rs
= get_remote_state ();
2738 if (remote_desc
== 0) /* paranoia */
2739 error (_("Command can only be used when connected to the remote target."));
2741 #if defined(HAVE_LIBEXPAT)
2742 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2744 char *xml
= target_read_stralloc (¤t_target
,
2745 TARGET_OBJECT_THREADS
, NULL
);
2747 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2751 struct threads_parsing_context context
;
2753 context
.items
= NULL
;
2754 make_cleanup (clear_threads_parsing_context
, &context
);
2756 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2757 threads_elements
, xml
, &context
) == 0)
2760 struct thread_item
*item
;
2763 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2766 if (!ptid_equal (item
->ptid
, null_ptid
))
2768 struct private_thread_info
*info
;
2769 /* In non-stop mode, we assume new found threads
2770 are running until proven otherwise with a
2771 stop reply. In all-stop, we can only get
2772 here if all threads are stopped. */
2773 int running
= non_stop
? 1 : 0;
2775 remote_notice_new_inferior (item
->ptid
, running
);
2777 info
= demand_private_info (item
->ptid
);
2778 info
->core
= item
->core
;
2779 info
->extra
= item
->extra
;
2786 do_cleanups (back_to
);
2791 if (use_threadinfo_query
)
2793 putpkt ("qfThreadInfo");
2794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2796 if (bufp
[0] != '\0') /* q packet recognized */
2798 struct cleanup
*old_chain
;
2801 /* remote_notice_new_inferior (in the loop below) may make
2802 new RSP calls, which clobber rs->buf. Work with a
2804 bufp
= saved_reply
= xstrdup (rs
->buf
);
2805 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2807 while (*bufp
++ == 'm') /* reply contains one or more TID */
2811 new_thread
= read_ptid (bufp
, &bufp
);
2812 if (!ptid_equal (new_thread
, null_ptid
))
2814 /* In non-stop mode, we assume new found threads
2815 are running until proven otherwise with a
2816 stop reply. In all-stop, we can only get
2817 here if all threads are stopped. */
2818 int running
= non_stop
? 1 : 0;
2820 remote_notice_new_inferior (new_thread
, running
);
2823 while (*bufp
++ == ','); /* comma-separated list */
2824 free_current_contents (&saved_reply
);
2825 putpkt ("qsThreadInfo");
2826 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2827 bufp
= saved_reply
= xstrdup (rs
->buf
);
2829 do_cleanups (old_chain
);
2834 /* Only qfThreadInfo is supported in non-stop mode. */
2838 /* Else fall back to old method based on jmetzler protocol. */
2839 use_threadinfo_query
= 0;
2840 remote_find_new_threads ();
2845 * Collect a descriptive string about the given thread.
2846 * The target may say anything it wants to about the thread
2847 * (typically info about its blocked / runnable state, name, etc.).
2848 * This string will appear in the info threads display.
2850 * Optional: targets are not required to implement this function.
2854 remote_threads_extra_info (struct thread_info
*tp
)
2856 struct remote_state
*rs
= get_remote_state ();
2860 struct gdb_ext_thread_info threadinfo
;
2861 static char display_buf
[100]; /* arbitrary... */
2862 int n
= 0; /* position in display_buf */
2864 if (remote_desc
== 0) /* paranoia */
2865 internal_error (__FILE__
, __LINE__
,
2866 _("remote_threads_extra_info"));
2868 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2869 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2870 /* This is the main thread which was added by GDB. The remote
2871 server doesn't know about it. */
2874 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2876 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2878 if (info
&& info
->private)
2879 return info
->private->extra
;
2884 if (use_threadextra_query
)
2887 char *endb
= rs
->buf
+ get_remote_packet_size ();
2889 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2891 write_ptid (b
, endb
, tp
->ptid
);
2894 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2895 if (rs
->buf
[0] != 0)
2897 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2898 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2899 display_buf
[result
] = '\0';
2904 /* If the above query fails, fall back to the old method. */
2905 use_threadextra_query
= 0;
2906 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2907 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2908 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2909 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2910 if (threadinfo
.active
)
2912 if (*threadinfo
.shortname
)
2913 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2914 " Name: %s,", threadinfo
.shortname
);
2915 if (*threadinfo
.display
)
2916 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2917 " State: %s,", threadinfo
.display
);
2918 if (*threadinfo
.more_display
)
2919 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2920 " Priority: %s", threadinfo
.more_display
);
2924 /* For purely cosmetic reasons, clear up trailing commas. */
2925 if (',' == display_buf
[n
-1])
2926 display_buf
[n
-1] = ' ';
2935 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2936 struct static_tracepoint_marker
*marker
)
2938 struct remote_state
*rs
= get_remote_state ();
2941 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2943 p
+= hexnumstr (p
, addr
);
2945 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2949 error (_("Remote failure reply: %s"), p
);
2953 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2960 static VEC(static_tracepoint_marker_p
) *
2961 remote_static_tracepoint_markers_by_strid (const char *strid
)
2963 struct remote_state
*rs
= get_remote_state ();
2964 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2965 struct static_tracepoint_marker
*marker
= NULL
;
2966 struct cleanup
*old_chain
;
2969 /* Ask for a first packet of static tracepoint marker
2972 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2975 error (_("Remote failure reply: %s"), p
);
2977 old_chain
= make_cleanup (free_current_marker
, &marker
);
2982 marker
= XCNEW (struct static_tracepoint_marker
);
2986 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2988 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2990 VEC_safe_push (static_tracepoint_marker_p
,
2996 release_static_tracepoint_marker (marker
);
2997 memset (marker
, 0, sizeof (*marker
));
3000 while (*p
++ == ','); /* comma-separated list */
3001 /* Ask for another packet of static tracepoint definition. */
3003 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3007 do_cleanups (old_chain
);
3012 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3015 remote_get_ada_task_ptid (long lwp
, long thread
)
3017 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
3021 /* Restart the remote side; this is an extended protocol operation. */
3024 extended_remote_restart (void)
3026 struct remote_state
*rs
= get_remote_state ();
3028 /* Send the restart command; for reasons I don't understand the
3029 remote side really expects a number after the "R". */
3030 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3033 remote_fileio_reset ();
3036 /* Clean up connection to a remote debugger. */
3041 if (remote_desc
== NULL
)
3042 return; /* already closed */
3044 /* Make sure we leave stdin registered in the event loop, and we
3045 don't leave the async SIGINT signal handler installed. */
3046 remote_terminal_ours ();
3048 serial_close (remote_desc
);
3051 /* We don't have a connection to the remote stub anymore. Get rid
3052 of all the inferiors and their threads we were controlling.
3053 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3054 will be unable to find the thread corresponding to (pid, 0, 0). */
3055 inferior_ptid
= null_ptid
;
3056 discard_all_inferiors ();
3058 /* Stop replies may from inferiors which are still unknown to GDB.
3059 We are closing the remote target, so we should discard
3060 everything, including the stop replies from GDB-unknown
3062 discard_pending_stop_replies (NULL
);
3064 if (remote_async_inferior_event_token
)
3065 delete_async_event_handler (&remote_async_inferior_event_token
);
3067 remote_notif_unregister_async_event_handler ();
3069 trace_reset_local_state ();
3072 /* Query the remote side for the text, data and bss offsets. */
3077 struct remote_state
*rs
= get_remote_state ();
3080 int lose
, num_segments
= 0, do_sections
, do_segments
;
3081 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3082 struct section_offsets
*offs
;
3083 struct symfile_segment_data
*data
;
3085 if (symfile_objfile
== NULL
)
3088 putpkt ("qOffsets");
3089 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3092 if (buf
[0] == '\000')
3093 return; /* Return silently. Stub doesn't support
3097 warning (_("Remote failure reply: %s"), buf
);
3101 /* Pick up each field in turn. This used to be done with scanf, but
3102 scanf will make trouble if CORE_ADDR size doesn't match
3103 conversion directives correctly. The following code will work
3104 with any size of CORE_ADDR. */
3105 text_addr
= data_addr
= bss_addr
= 0;
3109 if (strncmp (ptr
, "Text=", 5) == 0)
3112 /* Don't use strtol, could lose on big values. */
3113 while (*ptr
&& *ptr
!= ';')
3114 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3116 if (strncmp (ptr
, ";Data=", 6) == 0)
3119 while (*ptr
&& *ptr
!= ';')
3120 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3125 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3128 while (*ptr
&& *ptr
!= ';')
3129 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3131 if (bss_addr
!= data_addr
)
3132 warning (_("Target reported unsupported offsets: %s"), buf
);
3137 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3140 /* Don't use strtol, could lose on big values. */
3141 while (*ptr
&& *ptr
!= ';')
3142 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3145 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3148 while (*ptr
&& *ptr
!= ';')
3149 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3157 error (_("Malformed response to offset query, %s"), buf
);
3158 else if (*ptr
!= '\0')
3159 warning (_("Target reported unsupported offsets: %s"), buf
);
3161 offs
= ((struct section_offsets
*)
3162 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3163 memcpy (offs
, symfile_objfile
->section_offsets
,
3164 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3166 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3167 do_segments
= (data
!= NULL
);
3168 do_sections
= num_segments
== 0;
3170 if (num_segments
> 0)
3172 segments
[0] = text_addr
;
3173 segments
[1] = data_addr
;
3175 /* If we have two segments, we can still try to relocate everything
3176 by assuming that the .text and .data offsets apply to the whole
3177 text and data segments. Convert the offsets given in the packet
3178 to base addresses for symfile_map_offsets_to_segments. */
3179 else if (data
&& data
->num_segments
== 2)
3181 segments
[0] = data
->segment_bases
[0] + text_addr
;
3182 segments
[1] = data
->segment_bases
[1] + data_addr
;
3185 /* If the object file has only one segment, assume that it is text
3186 rather than data; main programs with no writable data are rare,
3187 but programs with no code are useless. Of course the code might
3188 have ended up in the data segment... to detect that we would need
3189 the permissions here. */
3190 else if (data
&& data
->num_segments
== 1)
3192 segments
[0] = data
->segment_bases
[0] + text_addr
;
3195 /* There's no way to relocate by segment. */
3201 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3202 offs
, num_segments
, segments
);
3204 if (ret
== 0 && !do_sections
)
3205 error (_("Can not handle qOffsets TextSeg "
3206 "response with this symbol file"));
3213 free_symfile_segment_data (data
);
3217 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3219 /* This is a temporary kludge to force data and bss to use the
3220 same offsets because that's what nlmconv does now. The real
3221 solution requires changes to the stub and remote.c that I
3222 don't have time to do right now. */
3224 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3225 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3228 objfile_relocate (symfile_objfile
, offs
);
3231 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3232 threads we know are stopped already. This is used during the
3233 initial remote connection in non-stop mode --- threads that are
3234 reported as already being stopped are left stopped. */
3237 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3239 /* If we have a stop reply for this thread, it must be stopped. */
3240 if (peek_stop_reply (thread
->ptid
))
3241 set_stop_requested (thread
->ptid
, 1);
3246 /* Send interrupt_sequence to remote target. */
3248 send_interrupt_sequence (void)
3250 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3251 remote_serial_write ("\x03", 1);
3252 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3253 serial_send_break (remote_desc
);
3254 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3256 serial_send_break (remote_desc
);
3257 remote_serial_write ("g", 1);
3260 internal_error (__FILE__
, __LINE__
,
3261 _("Invalid value for interrupt_sequence_mode: %s."),
3262 interrupt_sequence_mode
);
3266 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3267 and extract the PTID. Returns NULL_PTID if not found. */
3270 stop_reply_extract_thread (char *stop_reply
)
3272 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3276 /* Txx r:val ; r:val (...) */
3279 /* Look for "register" named "thread". */
3284 p1
= strchr (p
, ':');
3288 if (strncmp (p
, "thread", p1
- p
) == 0)
3289 return read_ptid (++p1
, &p
);
3291 p1
= strchr (p
, ';');
3303 /* Query the remote target for which is the current thread/process,
3304 add it to our tables, and update INFERIOR_PTID. The caller is
3305 responsible for setting the state such that the remote end is ready
3306 to return the current thread.
3308 This function is called after handling the '?' or 'vRun' packets,
3309 whose response is a stop reply from which we can also try
3310 extracting the thread. If the target doesn't support the explicit
3311 qC query, we infer the current thread from that stop reply, passed
3312 in in WAIT_STATUS, which may be NULL. */
3315 add_current_inferior_and_thread (char *wait_status
)
3317 struct remote_state
*rs
= get_remote_state ();
3319 ptid_t ptid
= null_ptid
;
3321 inferior_ptid
= null_ptid
;
3323 /* Now, if we have thread information, update inferior_ptid. First
3324 if we have a stop reply handy, maybe it's a T stop reply with a
3325 "thread" register we can extract the current thread from. If
3326 not, ask the remote which is the current thread, with qC. The
3327 former method avoids a roundtrip. Note we don't use
3328 remote_parse_stop_reply as that makes use of the target
3329 architecture, which we haven't yet fully determined at this
3331 if (wait_status
!= NULL
)
3332 ptid
= stop_reply_extract_thread (wait_status
);
3333 if (ptid_equal (ptid
, null_ptid
))
3334 ptid
= remote_current_thread (inferior_ptid
);
3336 if (!ptid_equal (ptid
, null_ptid
))
3338 if (!remote_multi_process_p (rs
))
3341 inferior_ptid
= ptid
;
3345 /* Without this, some commands which require an active target
3346 (such as kill) won't work. This variable serves (at least)
3347 double duty as both the pid of the target process (if it has
3348 such), and as a flag indicating that a target is active. */
3349 inferior_ptid
= magic_null_ptid
;
3353 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3355 /* Add the main thread. */
3356 add_thread_silent (inferior_ptid
);
3360 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3362 struct remote_state
*rs
= get_remote_state ();
3363 struct packet_config
*noack_config
;
3364 char *wait_status
= NULL
;
3366 immediate_quit
++; /* Allow user to interrupt it. */
3369 if (interrupt_on_connect
)
3370 send_interrupt_sequence ();
3372 /* Ack any packet which the remote side has already sent. */
3373 serial_write (remote_desc
, "+", 1);
3375 /* Signal other parts that we're going through the initial setup,
3376 and so things may not be stable yet. */
3377 rs
->starting_up
= 1;
3379 /* The first packet we send to the target is the optional "supported
3380 packets" request. If the target can answer this, it will tell us
3381 which later probes to skip. */
3382 remote_query_supported ();
3384 /* If the stub wants to get a QAllow, compose one and send it. */
3385 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3386 remote_set_permissions ();
3388 /* Next, we possibly activate noack mode.
3390 If the QStartNoAckMode packet configuration is set to AUTO,
3391 enable noack mode if the stub reported a wish for it with
3394 If set to TRUE, then enable noack mode even if the stub didn't
3395 report it in qSupported. If the stub doesn't reply OK, the
3396 session ends with an error.
3398 If FALSE, then don't activate noack mode, regardless of what the
3399 stub claimed should be the default with qSupported. */
3401 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3403 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3404 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3405 && noack_config
->support
== PACKET_ENABLE
))
3407 putpkt ("QStartNoAckMode");
3408 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3409 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3415 /* Tell the remote that we are using the extended protocol. */
3417 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3420 /* Let the target know which signals it is allowed to pass down to
3422 update_signals_program_target ();
3424 /* Next, if the target can specify a description, read it. We do
3425 this before anything involving memory or registers. */
3426 target_find_description ();
3428 /* Next, now that we know something about the target, update the
3429 address spaces in the program spaces. */
3430 update_address_spaces ();
3432 /* On OSs where the list of libraries is global to all
3433 processes, we fetch them early. */
3434 if (gdbarch_has_global_solist (target_gdbarch ()))
3435 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3439 if (!rs
->non_stop_aware
)
3440 error (_("Non-stop mode requested, but remote "
3441 "does not support non-stop"));
3443 putpkt ("QNonStop:1");
3444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3446 if (strcmp (rs
->buf
, "OK") != 0)
3447 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3449 /* Find about threads and processes the stub is already
3450 controlling. We default to adding them in the running state.
3451 The '?' query below will then tell us about which threads are
3453 remote_threads_info (target
);
3455 else if (rs
->non_stop_aware
)
3457 /* Don't assume that the stub can operate in all-stop mode.
3458 Request it explicitly. */
3459 putpkt ("QNonStop:0");
3460 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3462 if (strcmp (rs
->buf
, "OK") != 0)
3463 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3466 /* Upload TSVs regardless of whether the target is running or not. The
3467 remote stub, such as GDBserver, may have some predefined or builtin
3468 TSVs, even if the target is not running. */
3469 if (remote_get_trace_status (current_trace_status ()) != -1)
3471 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3473 remote_upload_trace_state_variables (&uploaded_tsvs
);
3474 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3477 /* Check whether the target is running now. */
3479 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3485 struct inferior
*inf
;
3487 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3490 error (_("The target is not running (try extended-remote?)"));
3492 /* We're connected, but not running. Drop out before we
3493 call start_remote. */
3494 rs
->starting_up
= 0;
3499 /* Save the reply for later. */
3500 wait_status
= alloca (strlen (rs
->buf
) + 1);
3501 strcpy (wait_status
, rs
->buf
);
3504 /* Let the stub know that we want it to return the thread. */
3505 set_continue_thread (minus_one_ptid
);
3507 add_current_inferior_and_thread (wait_status
);
3509 /* init_wait_for_inferior should be called before get_offsets in order
3510 to manage `inserted' flag in bp loc in a correct state.
3511 breakpoint_init_inferior, called from init_wait_for_inferior, set
3512 `inserted' flag to 0, while before breakpoint_re_set, called from
3513 start_remote, set `inserted' flag to 1. In the initialization of
3514 inferior, breakpoint_init_inferior should be called first, and then
3515 breakpoint_re_set can be called. If this order is broken, state of
3516 `inserted' flag is wrong, and cause some problems on breakpoint
3518 init_wait_for_inferior ();
3520 get_offsets (); /* Get text, data & bss offsets. */
3522 /* If we could not find a description using qXfer, and we know
3523 how to do it some other way, try again. This is not
3524 supported for non-stop; it could be, but it is tricky if
3525 there are no stopped threads when we connect. */
3526 if (remote_read_description_p (target
)
3527 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3529 target_clear_description ();
3530 target_find_description ();
3533 /* Use the previously fetched status. */
3534 gdb_assert (wait_status
!= NULL
);
3535 strcpy (rs
->buf
, wait_status
);
3536 rs
->cached_wait_status
= 1;
3539 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3543 /* Clear WFI global state. Do this before finding about new
3544 threads and inferiors, and setting the current inferior.
3545 Otherwise we would clear the proceed status of the current
3546 inferior when we want its stop_soon state to be preserved
3547 (see notice_new_inferior). */
3548 init_wait_for_inferior ();
3550 /* In non-stop, we will either get an "OK", meaning that there
3551 are no stopped threads at this time; or, a regular stop
3552 reply. In the latter case, there may be more than one thread
3553 stopped --- we pull them all out using the vStopped
3555 if (strcmp (rs
->buf
, "OK") != 0)
3557 struct notif_client
*notif
= ¬if_client_stop
;
3559 /* remote_notif_get_pending_replies acks this one, and gets
3561 notif_client_stop
.pending_event
3562 = remote_notif_parse (notif
, rs
->buf
);
3563 remote_notif_get_pending_events (notif
);
3565 /* Make sure that threads that were stopped remain
3567 iterate_over_threads (set_stop_requested_callback
, NULL
);
3570 if (target_can_async_p ())
3571 target_async (inferior_event_handler
, 0);
3573 if (thread_count () == 0)
3576 error (_("The target is not running (try extended-remote?)"));
3578 /* We're connected, but not running. Drop out before we
3579 call start_remote. */
3580 rs
->starting_up
= 0;
3584 /* Let the stub know that we want it to return the thread. */
3586 /* Force the stub to choose a thread. */
3587 set_general_thread (null_ptid
);
3590 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3591 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3592 error (_("remote didn't report the current thread in non-stop mode"));
3594 get_offsets (); /* Get text, data & bss offsets. */
3596 /* In non-stop mode, any cached wait status will be stored in
3597 the stop reply queue. */
3598 gdb_assert (wait_status
== NULL
);
3600 /* Report all signals during attach/startup. */
3601 remote_pass_signals (0, NULL
);
3604 /* If we connected to a live target, do some additional setup. */
3605 if (target_has_execution
)
3607 if (exec_bfd
) /* No use without an exec file. */
3608 remote_check_symbols ();
3611 /* Possibly the target has been engaged in a trace run started
3612 previously; find out where things are at. */
3613 if (remote_get_trace_status (current_trace_status ()) != -1)
3615 struct uploaded_tp
*uploaded_tps
= NULL
;
3617 if (current_trace_status ()->running
)
3618 printf_filtered (_("Trace is already running on the target.\n"));
3620 remote_upload_tracepoints (&uploaded_tps
);
3622 merge_uploaded_tracepoints (&uploaded_tps
);
3625 /* The thread and inferior lists are now synchronized with the
3626 target, our symbols have been relocated, and we're merged the
3627 target's tracepoints with ours. We're done with basic start
3629 rs
->starting_up
= 0;
3631 /* If breakpoints are global, insert them now. */
3632 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3633 && breakpoints_always_inserted_mode ())
3634 insert_breakpoints ();
3637 /* Open a connection to a remote debugger.
3638 NAME is the filename used for communication. */
3641 remote_open (char *name
, int from_tty
)
3643 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3646 /* Open a connection to a remote debugger using the extended
3647 remote gdb protocol. NAME is the filename used for communication. */
3650 extended_remote_open (char *name
, int from_tty
)
3652 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3655 /* Generic code for opening a connection to a remote target. */
3658 init_all_packet_configs (void)
3662 for (i
= 0; i
< PACKET_MAX
; i
++)
3663 update_packet_config (&remote_protocol_packets
[i
]);
3666 /* Symbol look-up. */
3669 remote_check_symbols (void)
3671 struct remote_state
*rs
= get_remote_state ();
3672 char *msg
, *reply
, *tmp
;
3673 struct minimal_symbol
*sym
;
3676 /* The remote side has no concept of inferiors that aren't running
3677 yet, it only knows about running processes. If we're connected
3678 but our current inferior is not running, we should not invite the
3679 remote target to request symbol lookups related to its
3680 (unrelated) current process. */
3681 if (!target_has_execution
)
3684 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3687 /* Make sure the remote is pointing at the right process. Note
3688 there's no way to select "no process". */
3689 set_general_process ();
3691 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3692 because we need both at the same time. */
3693 msg
= alloca (get_remote_packet_size ());
3695 /* Invite target to request symbol lookups. */
3697 putpkt ("qSymbol::");
3698 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3699 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3702 while (strncmp (reply
, "qSymbol:", 8) == 0)
3705 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3707 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3709 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3712 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3713 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3715 /* If this is a function address, return the start of code
3716 instead of any data function descriptor. */
3717 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3721 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3722 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3726 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3731 static struct serial
*
3732 remote_serial_open (char *name
)
3734 static int udp_warning
= 0;
3736 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3737 of in ser-tcp.c, because it is the remote protocol assuming that the
3738 serial connection is reliable and not the serial connection promising
3740 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3742 warning (_("The remote protocol may be unreliable over UDP.\n"
3743 "Some events may be lost, rendering further debugging "
3748 return serial_open (name
);
3751 /* Inform the target of our permission settings. The permission flags
3752 work without this, but if the target knows the settings, it can do
3753 a couple things. First, it can add its own check, to catch cases
3754 that somehow manage to get by the permissions checks in target
3755 methods. Second, if the target is wired to disallow particular
3756 settings (for instance, a system in the field that is not set up to
3757 be able to stop at a breakpoint), it can object to any unavailable
3761 remote_set_permissions (void)
3763 struct remote_state
*rs
= get_remote_state ();
3765 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3766 "WriteReg:%x;WriteMem:%x;"
3767 "InsertBreak:%x;InsertTrace:%x;"
3768 "InsertFastTrace:%x;Stop:%x",
3769 may_write_registers
, may_write_memory
,
3770 may_insert_breakpoints
, may_insert_tracepoints
,
3771 may_insert_fast_tracepoints
, may_stop
);
3773 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3775 /* If the target didn't like the packet, warn the user. Do not try
3776 to undo the user's settings, that would just be maddening. */
3777 if (strcmp (rs
->buf
, "OK") != 0)
3778 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3781 /* This type describes each known response to the qSupported
3783 struct protocol_feature
3785 /* The name of this protocol feature. */
3788 /* The default for this protocol feature. */
3789 enum packet_support default_support
;
3791 /* The function to call when this feature is reported, or after
3792 qSupported processing if the feature is not supported.
3793 The first argument points to this structure. The second
3794 argument indicates whether the packet requested support be
3795 enabled, disabled, or probed (or the default, if this function
3796 is being called at the end of processing and this feature was
3797 not reported). The third argument may be NULL; if not NULL, it
3798 is a NUL-terminated string taken from the packet following
3799 this feature's name and an equals sign. */
3800 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3803 /* The corresponding packet for this feature. Only used if
3804 FUNC is remote_supported_packet. */
3809 remote_supported_packet (const struct protocol_feature
*feature
,
3810 enum packet_support support
,
3811 const char *argument
)
3815 warning (_("Remote qSupported response supplied an unexpected value for"
3816 " \"%s\"."), feature
->name
);
3820 if (remote_protocol_packets
[feature
->packet
].support
3821 == PACKET_SUPPORT_UNKNOWN
)
3822 remote_protocol_packets
[feature
->packet
].support
= support
;
3826 remote_packet_size (const struct protocol_feature
*feature
,
3827 enum packet_support support
, const char *value
)
3829 struct remote_state
*rs
= get_remote_state ();
3834 if (support
!= PACKET_ENABLE
)
3837 if (value
== NULL
|| *value
== '\0')
3839 warning (_("Remote target reported \"%s\" without a size."),
3845 packet_size
= strtol (value
, &value_end
, 16);
3846 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3848 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3849 feature
->name
, value
);
3853 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3855 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3856 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3857 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3860 /* Record the new maximum packet size. */
3861 rs
->explicit_packet_size
= packet_size
;
3865 remote_multi_process_feature (const struct protocol_feature
*feature
,
3866 enum packet_support support
, const char *value
)
3868 struct remote_state
*rs
= get_remote_state ();
3870 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3874 remote_non_stop_feature (const struct protocol_feature
*feature
,
3875 enum packet_support support
, const char *value
)
3877 struct remote_state
*rs
= get_remote_state ();
3879 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3883 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3884 enum packet_support support
,
3887 struct remote_state
*rs
= get_remote_state ();
3889 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3893 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3894 enum packet_support support
,
3897 struct remote_state
*rs
= get_remote_state ();
3899 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3903 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3904 enum packet_support support
,
3907 struct remote_state
*rs
= get_remote_state ();
3909 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3913 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3914 enum packet_support support
,
3917 struct remote_state
*rs
= get_remote_state ();
3919 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3923 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3924 enum packet_support support
,
3927 struct remote_state
*rs
= get_remote_state ();
3929 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3933 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3934 enum packet_support support
,
3937 struct remote_state
*rs
= get_remote_state ();
3939 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3943 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3944 enum packet_support support
,
3947 struct remote_state
*rs
= get_remote_state ();
3949 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3953 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3954 enum packet_support support
,
3957 struct remote_state
*rs
= get_remote_state ();
3959 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3963 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3964 enum packet_support support
,
3967 struct remote_state
*rs
= get_remote_state ();
3969 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3973 remote_augmented_libraries_svr4_read_feature
3974 (const struct protocol_feature
*feature
,
3975 enum packet_support support
, const char *value
)
3977 struct remote_state
*rs
= get_remote_state ();
3979 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3982 static const struct protocol_feature remote_protocol_features
[] = {
3983 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3984 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3985 PACKET_qXfer_auxv
},
3986 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3987 PACKET_qXfer_features
},
3988 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3989 PACKET_qXfer_libraries
},
3990 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3991 PACKET_qXfer_libraries_svr4
},
3992 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3993 remote_augmented_libraries_svr4_read_feature
, -1 },
3994 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3995 PACKET_qXfer_memory_map
},
3996 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3997 PACKET_qXfer_spu_read
},
3998 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3999 PACKET_qXfer_spu_write
},
4000 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4001 PACKET_qXfer_osdata
},
4002 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_qXfer_threads
},
4004 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4005 PACKET_qXfer_traceframe_info
},
4006 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4007 PACKET_QPassSignals
},
4008 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4009 PACKET_QProgramSignals
},
4010 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4011 PACKET_QStartNoAckMode
},
4012 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4013 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4014 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4015 PACKET_qXfer_siginfo_read
},
4016 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4017 PACKET_qXfer_siginfo_write
},
4018 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4019 PACKET_ConditionalTracepoints
},
4020 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4021 PACKET_ConditionalBreakpoints
},
4022 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4023 PACKET_BreakpointCommands
},
4024 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4025 PACKET_FastTracepoints
},
4026 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4027 PACKET_StaticTracepoints
},
4028 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4029 PACKET_InstallInTrace
},
4030 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4032 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4034 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4036 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4037 PACKET_TracepointSource
},
4038 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4040 { "EnableDisableTracepoints", PACKET_DISABLE
,
4041 remote_enable_disable_tracepoint_feature
, -1 },
4042 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4043 PACKET_qXfer_fdpic
},
4044 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4046 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4047 PACKET_QDisableRandomization
},
4048 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4049 { "QTBuffer:size", PACKET_DISABLE
,
4050 remote_supported_packet
, PACKET_QTBuffer_size
},
4051 { "tracenz", PACKET_DISABLE
,
4052 remote_string_tracing_feature
, -1 },
4053 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4054 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4055 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4056 PACKET_qXfer_btrace
}
4059 static char *remote_support_xml
;
4061 /* Register string appended to "xmlRegisters=" in qSupported query. */
4064 register_remote_support_xml (const char *xml
)
4066 #if defined(HAVE_LIBEXPAT)
4067 if (remote_support_xml
== NULL
)
4068 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4071 char *copy
= xstrdup (remote_support_xml
+ 13);
4072 char *p
= strtok (copy
, ",");
4076 if (strcmp (p
, xml
) == 0)
4083 while ((p
= strtok (NULL
, ",")) != NULL
);
4086 remote_support_xml
= reconcat (remote_support_xml
,
4087 remote_support_xml
, ",", xml
,
4094 remote_query_supported_append (char *msg
, const char *append
)
4097 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4099 return xstrdup (append
);
4103 remote_query_supported (void)
4105 struct remote_state
*rs
= get_remote_state ();
4108 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4110 /* The packet support flags are handled differently for this packet
4111 than for most others. We treat an error, a disabled packet, and
4112 an empty response identically: any features which must be reported
4113 to be used will be automatically disabled. An empty buffer
4114 accomplishes this, since that is also the representation for a list
4115 containing no features. */
4118 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4121 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4123 q
= remote_query_supported_append (q
, "multiprocess+");
4125 if (remote_support_xml
)
4126 q
= remote_query_supported_append (q
, remote_support_xml
);
4128 q
= remote_query_supported_append (q
, "qRelocInsn+");
4130 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4133 do_cleanups (old_chain
);
4135 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4137 /* If an error occured, warn, but do not return - just reset the
4138 buffer to empty and go on to disable features. */
4139 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4142 warning (_("Remote failure reply: %s"), rs
->buf
);
4147 memset (seen
, 0, sizeof (seen
));
4152 enum packet_support is_supported
;
4153 char *p
, *end
, *name_end
, *value
;
4155 /* First separate out this item from the rest of the packet. If
4156 there's another item after this, we overwrite the separator
4157 (terminated strings are much easier to work with). */
4159 end
= strchr (p
, ';');
4162 end
= p
+ strlen (p
);
4172 warning (_("empty item in \"qSupported\" response"));
4177 name_end
= strchr (p
, '=');
4180 /* This is a name=value entry. */
4181 is_supported
= PACKET_ENABLE
;
4182 value
= name_end
+ 1;
4191 is_supported
= PACKET_ENABLE
;
4195 is_supported
= PACKET_DISABLE
;
4199 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4203 warning (_("unrecognized item \"%s\" "
4204 "in \"qSupported\" response"), p
);
4210 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4211 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4213 const struct protocol_feature
*feature
;
4216 feature
= &remote_protocol_features
[i
];
4217 feature
->func (feature
, is_supported
, value
);
4222 /* If we increased the packet size, make sure to increase the global
4223 buffer size also. We delay this until after parsing the entire
4224 qSupported packet, because this is the same buffer we were
4226 if (rs
->buf_size
< rs
->explicit_packet_size
)
4228 rs
->buf_size
= rs
->explicit_packet_size
;
4229 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4232 /* Handle the defaults for unmentioned features. */
4233 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4236 const struct protocol_feature
*feature
;
4238 feature
= &remote_protocol_features
[i
];
4239 feature
->func (feature
, feature
->default_support
, NULL
);
4243 /* Remove any of the remote.c targets from target stack. Upper targets depend
4244 on it so remove them first. */
4247 remote_unpush_target (void)
4249 pop_all_targets_above (process_stratum
- 1);
4253 remote_open_1 (char *name
, int from_tty
,
4254 struct target_ops
*target
, int extended_p
)
4256 struct remote_state
*rs
= get_remote_state ();
4259 error (_("To open a remote debug connection, you need to specify what\n"
4260 "serial device is attached to the remote system\n"
4261 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4263 /* See FIXME above. */
4264 if (!target_async_permitted
)
4265 wait_forever_enabled_p
= 1;
4267 /* If we're connected to a running target, target_preopen will kill it.
4268 Ask this question first, before target_preopen has a chance to kill
4270 if (remote_desc
!= NULL
&& !have_inferiors ())
4273 && !query (_("Already connected to a remote target. Disconnect? ")))
4274 error (_("Still connected."));
4277 /* Here the possibly existing remote target gets unpushed. */
4278 target_preopen (from_tty
);
4280 /* Make sure we send the passed signals list the next time we resume. */
4281 xfree (last_pass_packet
);
4282 last_pass_packet
= NULL
;
4284 /* Make sure we send the program signals list the next time we
4286 xfree (last_program_signals_packet
);
4287 last_program_signals_packet
= NULL
;
4289 remote_fileio_reset ();
4290 reopen_exec_file ();
4293 remote_desc
= remote_serial_open (name
);
4295 perror_with_name (name
);
4297 if (baud_rate
!= -1)
4299 if (serial_setbaudrate (remote_desc
, baud_rate
))
4301 /* The requested speed could not be set. Error out to
4302 top level after closing remote_desc. Take care to
4303 set remote_desc to NULL to avoid closing remote_desc
4305 serial_close (remote_desc
);
4307 perror_with_name (name
);
4311 serial_raw (remote_desc
);
4313 /* If there is something sitting in the buffer we might take it as a
4314 response to a command, which would be bad. */
4315 serial_flush_input (remote_desc
);
4319 puts_filtered ("Remote debugging using ");
4320 puts_filtered (name
);
4321 puts_filtered ("\n");
4323 push_target (target
); /* Switch to using remote target now. */
4325 /* Register extra event sources in the event loop. */
4326 remote_async_inferior_event_token
4327 = create_async_event_handler (remote_async_inferior_event_handler
,
4329 remote_notif_register_async_event_handler ();
4331 /* Reset the target state; these things will be queried either by
4332 remote_query_supported or as they are needed. */
4333 init_all_packet_configs ();
4334 rs
->cached_wait_status
= 0;
4335 rs
->explicit_packet_size
= 0;
4337 rs
->multi_process_aware
= 0;
4338 rs
->extended
= extended_p
;
4339 rs
->non_stop_aware
= 0;
4340 rs
->waiting_for_stop_reply
= 0;
4341 rs
->ctrlc_pending_p
= 0;
4343 general_thread
= not_sent_ptid
;
4344 continue_thread
= not_sent_ptid
;
4345 remote_traceframe_number
= -1;
4347 /* Probe for ability to use "ThreadInfo" query, as required. */
4348 use_threadinfo_query
= 1;
4349 use_threadextra_query
= 1;
4351 if (target_async_permitted
)
4353 /* With this target we start out by owning the terminal. */
4354 remote_async_terminal_ours_p
= 1;
4356 /* FIXME: cagney/1999-09-23: During the initial connection it is
4357 assumed that the target is already ready and able to respond to
4358 requests. Unfortunately remote_start_remote() eventually calls
4359 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4360 around this. Eventually a mechanism that allows
4361 wait_for_inferior() to expect/get timeouts will be
4363 wait_forever_enabled_p
= 0;
4366 /* First delete any symbols previously loaded from shared libraries. */
4367 no_shared_libraries (NULL
, 0);
4370 init_thread_list ();
4372 /* Start the remote connection. If error() or QUIT, discard this
4373 target (we'd otherwise be in an inconsistent state) and then
4374 propogate the error on up the exception chain. This ensures that
4375 the caller doesn't stumble along blindly assuming that the
4376 function succeeded. The CLI doesn't have this problem but other
4377 UI's, such as MI do.
4379 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4380 this function should return an error indication letting the
4381 caller restore the previous state. Unfortunately the command
4382 ``target remote'' is directly wired to this function making that
4383 impossible. On a positive note, the CLI side of this problem has
4384 been fixed - the function set_cmd_context() makes it possible for
4385 all the ``target ....'' commands to share a common callback
4386 function. See cli-dump.c. */
4388 volatile struct gdb_exception ex
;
4390 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4392 remote_start_remote (from_tty
, target
, extended_p
);
4396 /* Pop the partially set up target - unless something else did
4397 already before throwing the exception. */
4398 if (remote_desc
!= NULL
)
4399 remote_unpush_target ();
4400 if (target_async_permitted
)
4401 wait_forever_enabled_p
= 1;
4402 throw_exception (ex
);
4406 if (target_async_permitted
)
4407 wait_forever_enabled_p
= 1;
4410 /* This takes a program previously attached to and detaches it. After
4411 this is done, GDB can be used to debug some other program. We
4412 better not have left any breakpoints in the target program or it'll
4413 die when it hits one. */
4416 remote_detach_1 (char *args
, int from_tty
, int extended
)
4418 int pid
= ptid_get_pid (inferior_ptid
);
4419 struct remote_state
*rs
= get_remote_state ();
4422 error (_("Argument given to \"detach\" when remotely debugging."));
4424 if (!target_has_execution
)
4425 error (_("No process to detach from."));
4429 char *exec_file
= get_exec_file (0);
4430 if (exec_file
== NULL
)
4432 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4433 target_pid_to_str (pid_to_ptid (pid
)));
4434 gdb_flush (gdb_stdout
);
4437 /* Tell the remote target to detach. */
4438 if (remote_multi_process_p (rs
))
4439 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4441 strcpy (rs
->buf
, "D");
4444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4446 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4448 else if (rs
->buf
[0] == '\0')
4449 error (_("Remote doesn't know how to detach"));
4451 error (_("Can't detach process."));
4453 if (from_tty
&& !extended
)
4454 puts_filtered (_("Ending remote debugging.\n"));
4456 target_mourn_inferior ();
4460 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4462 remote_detach_1 (args
, from_tty
, 0);
4466 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4468 remote_detach_1 (args
, from_tty
, 1);
4471 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4474 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4477 error (_("Argument given to \"disconnect\" when remotely debugging."));
4479 /* Make sure we unpush even the extended remote targets; mourn
4480 won't do it. So call remote_mourn_1 directly instead of
4481 target_mourn_inferior. */
4482 remote_mourn_1 (target
);
4485 puts_filtered ("Ending remote debugging.\n");
4488 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4489 be chatty about it. */
4492 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4494 struct remote_state
*rs
= get_remote_state ();
4496 char *wait_status
= NULL
;
4498 pid
= parse_pid_to_attach (args
);
4500 /* Remote PID can be freely equal to getpid, do not check it here the same
4501 way as in other targets. */
4503 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4504 error (_("This target does not support attaching to a process"));
4508 char *exec_file
= get_exec_file (0);
4511 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4512 target_pid_to_str (pid_to_ptid (pid
)));
4514 printf_unfiltered (_("Attaching to %s\n"),
4515 target_pid_to_str (pid_to_ptid (pid
)));
4517 gdb_flush (gdb_stdout
);
4520 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4522 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4524 if (packet_ok (rs
->buf
,
4525 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4529 /* Save the reply for later. */
4530 wait_status
= alloca (strlen (rs
->buf
) + 1);
4531 strcpy (wait_status
, rs
->buf
);
4533 else if (strcmp (rs
->buf
, "OK") != 0)
4534 error (_("Attaching to %s failed with: %s"),
4535 target_pid_to_str (pid_to_ptid (pid
)),
4538 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4539 error (_("This target does not support attaching to a process"));
4541 error (_("Attaching to %s failed"),
4542 target_pid_to_str (pid_to_ptid (pid
)));
4544 set_current_inferior (remote_add_inferior (0, pid
, 1));
4546 inferior_ptid
= pid_to_ptid (pid
);
4550 struct thread_info
*thread
;
4552 /* Get list of threads. */
4553 remote_threads_info (target
);
4555 thread
= first_thread_of_process (pid
);
4557 inferior_ptid
= thread
->ptid
;
4559 inferior_ptid
= pid_to_ptid (pid
);
4561 /* Invalidate our notion of the remote current thread. */
4562 record_currthread (minus_one_ptid
);
4566 /* Now, if we have thread information, update inferior_ptid. */
4567 inferior_ptid
= remote_current_thread (inferior_ptid
);
4569 /* Add the main thread to the thread list. */
4570 add_thread_silent (inferior_ptid
);
4573 /* Next, if the target can specify a description, read it. We do
4574 this before anything involving memory or registers. */
4575 target_find_description ();
4579 /* Use the previously fetched status. */
4580 gdb_assert (wait_status
!= NULL
);
4582 if (target_can_async_p ())
4584 struct notif_event
*reply
4585 = remote_notif_parse (¬if_client_stop
, wait_status
);
4587 push_stop_reply ((struct stop_reply
*) reply
);
4589 target_async (inferior_event_handler
, 0);
4593 gdb_assert (wait_status
!= NULL
);
4594 strcpy (rs
->buf
, wait_status
);
4595 rs
->cached_wait_status
= 1;
4599 gdb_assert (wait_status
== NULL
);
4603 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4605 extended_remote_attach_1 (ops
, args
, from_tty
);
4608 /* Convert hex digit A to a number. */
4613 if (a
>= '0' && a
<= '9')
4615 else if (a
>= 'a' && a
<= 'f')
4616 return a
- 'a' + 10;
4617 else if (a
>= 'A' && a
<= 'F')
4618 return a
- 'A' + 10;
4620 error (_("Reply contains invalid hex digit %d"), a
);
4624 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4628 for (i
= 0; i
< count
; i
++)
4630 if (hex
[0] == 0 || hex
[1] == 0)
4632 /* Hex string is short, or of uneven length.
4633 Return the count that has been converted so far. */
4636 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4642 /* Convert number NIB to a hex digit. */
4650 return 'a' + nib
- 10;
4654 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4658 /* May use a length, or a nul-terminated string as input. */
4660 count
= strlen ((char *) bin
);
4662 for (i
= 0; i
< count
; i
++)
4664 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4665 *hex
++ = tohex (*bin
++ & 0xf);
4671 /* Check for the availability of vCont. This function should also check
4675 remote_vcont_probe (struct remote_state
*rs
)
4679 strcpy (rs
->buf
, "vCont?");
4681 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4684 /* Make sure that the features we assume are supported. */
4685 if (strncmp (buf
, "vCont", 5) == 0)
4688 int support_s
, support_S
, support_c
, support_C
;
4694 rs
->supports_vCont
.t
= 0;
4695 rs
->supports_vCont
.r
= 0;
4696 while (p
&& *p
== ';')
4699 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4701 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4703 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4705 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4707 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4708 rs
->supports_vCont
.t
= 1;
4709 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4710 rs
->supports_vCont
.r
= 1;
4712 p
= strchr (p
, ';');
4715 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4716 BUF will make packet_ok disable the packet. */
4717 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4721 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4724 /* Helper function for building "vCont" resumptions. Write a
4725 resumption to P. ENDP points to one-passed-the-end of the buffer
4726 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4727 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4728 resumed thread should be single-stepped and/or signalled. If PTID
4729 equals minus_one_ptid, then all threads are resumed; if PTID
4730 represents a process, then all threads of the process are resumed;
4731 the thread to be stepped and/or signalled is given in the global
4735 append_resumption (char *p
, char *endp
,
4736 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4738 struct remote_state
*rs
= get_remote_state ();
4740 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4741 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4743 /* GDB is willing to range step. */
4744 && use_range_stepping
4745 /* Target supports range stepping. */
4746 && rs
->supports_vCont
.r
4747 /* We don't currently support range stepping multiple
4748 threads with a wildcard (though the protocol allows it,
4749 so stubs shouldn't make an active effort to forbid
4751 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4753 struct thread_info
*tp
;
4755 if (ptid_equal (ptid
, minus_one_ptid
))
4757 /* If we don't know about the target thread's tid, then
4758 we're resuming magic_null_ptid (see caller). */
4759 tp
= find_thread_ptid (magic_null_ptid
);
4762 tp
= find_thread_ptid (ptid
);
4763 gdb_assert (tp
!= NULL
);
4765 if (tp
->control
.may_range_step
)
4767 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4769 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4770 phex_nz (tp
->control
.step_range_start
,
4772 phex_nz (tp
->control
.step_range_end
,
4776 p
+= xsnprintf (p
, endp
- p
, ";s");
4779 p
+= xsnprintf (p
, endp
- p
, ";s");
4780 else if (siggnal
!= GDB_SIGNAL_0
)
4781 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4783 p
+= xsnprintf (p
, endp
- p
, ";c");
4785 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4789 /* All (-1) threads of process. */
4790 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4792 p
+= xsnprintf (p
, endp
- p
, ":");
4793 p
= write_ptid (p
, endp
, nptid
);
4795 else if (!ptid_equal (ptid
, minus_one_ptid
))
4797 p
+= xsnprintf (p
, endp
- p
, ":");
4798 p
= write_ptid (p
, endp
, ptid
);
4804 /* Append a vCont continue-with-signal action for threads that have a
4805 non-zero stop signal. */
4808 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4810 struct thread_info
*thread
;
4812 ALL_THREADS (thread
)
4813 if (ptid_match (thread
->ptid
, ptid
)
4814 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4815 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4816 && signal_pass_state (thread
->suspend
.stop_signal
))
4818 p
= append_resumption (p
, endp
, thread
->ptid
,
4819 0, thread
->suspend
.stop_signal
);
4820 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4826 /* Resume the remote inferior by using a "vCont" packet. The thread
4827 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4828 resumed thread should be single-stepped and/or signalled. If PTID
4829 equals minus_one_ptid, then all threads are resumed; the thread to
4830 be stepped and/or signalled is given in the global INFERIOR_PTID.
4831 This function returns non-zero iff it resumes the inferior.
4833 This function issues a strict subset of all possible vCont commands at the
4837 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4839 struct remote_state
*rs
= get_remote_state ();
4843 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4844 remote_vcont_probe (rs
);
4846 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4850 endp
= rs
->buf
+ get_remote_packet_size ();
4852 /* If we could generate a wider range of packets, we'd have to worry
4853 about overflowing BUF. Should there be a generic
4854 "multi-part-packet" packet? */
4856 p
+= xsnprintf (p
, endp
- p
, "vCont");
4858 if (ptid_equal (ptid
, magic_null_ptid
))
4860 /* MAGIC_NULL_PTID means that we don't have any active threads,
4861 so we don't have any TID numbers the inferior will
4862 understand. Make sure to only send forms that do not specify
4864 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4866 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4868 /* Resume all threads (of all processes, or of a single
4869 process), with preference for INFERIOR_PTID. This assumes
4870 inferior_ptid belongs to the set of all threads we are about
4872 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4874 /* Step inferior_ptid, with or without signal. */
4875 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4878 /* Also pass down any pending signaled resumption for other
4879 threads not the current. */
4880 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4882 /* And continue others without a signal. */
4883 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4887 /* Scheduler locking; resume only PTID. */
4888 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4891 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4896 /* In non-stop, the stub replies to vCont with "OK". The stop
4897 reply will be reported asynchronously by means of a `%Stop'
4899 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4900 if (strcmp (rs
->buf
, "OK") != 0)
4901 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4907 /* Tell the remote machine to resume. */
4909 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4911 static int last_sent_step
;
4914 remote_resume (struct target_ops
*ops
,
4915 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4917 struct remote_state
*rs
= get_remote_state ();
4920 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4921 (explained in remote-notif.c:handle_notification) so
4922 remote_notif_process is not called. We need find a place where
4923 it is safe to start a 'vNotif' sequence. It is good to do it
4924 before resuming inferior, because inferior was stopped and no RSP
4925 traffic at that moment. */
4927 remote_notif_process (¬if_client_stop
);
4929 last_sent_signal
= siggnal
;
4930 last_sent_step
= step
;
4932 /* The vCont packet doesn't need to specify threads via Hc. */
4933 /* No reverse support (yet) for vCont. */
4934 if (execution_direction
!= EXEC_REVERSE
)
4935 if (remote_vcont_resume (ptid
, step
, siggnal
))
4938 /* All other supported resume packets do use Hc, so set the continue
4940 if (ptid_equal (ptid
, minus_one_ptid
))
4941 set_continue_thread (any_thread_ptid
);
4943 set_continue_thread (ptid
);
4946 if (execution_direction
== EXEC_REVERSE
)
4948 /* We don't pass signals to the target in reverse exec mode. */
4949 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4950 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4954 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4955 error (_("Remote reverse-step not supported."));
4957 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4958 error (_("Remote reverse-continue not supported."));
4960 strcpy (buf
, step
? "bs" : "bc");
4962 else if (siggnal
!= GDB_SIGNAL_0
)
4964 buf
[0] = step
? 'S' : 'C';
4965 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4966 buf
[2] = tohex (((int) siggnal
) & 0xf);
4970 strcpy (buf
, step
? "s" : "c");
4975 /* We are about to start executing the inferior, let's register it
4976 with the event loop. NOTE: this is the one place where all the
4977 execution commands end up. We could alternatively do this in each
4978 of the execution commands in infcmd.c. */
4979 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4980 into infcmd.c in order to allow inferior function calls to work
4981 NOT asynchronously. */
4982 if (target_can_async_p ())
4983 target_async (inferior_event_handler
, 0);
4985 /* We've just told the target to resume. The remote server will
4986 wait for the inferior to stop, and then send a stop reply. In
4987 the mean time, we can't start another command/query ourselves
4988 because the stub wouldn't be ready to process it. This applies
4989 only to the base all-stop protocol, however. In non-stop (which
4990 only supports vCont), the stub replies with an "OK", and is
4991 immediate able to process further serial input. */
4993 rs
->waiting_for_stop_reply
= 1;
4997 /* Set up the signal handler for SIGINT, while the target is
4998 executing, ovewriting the 'regular' SIGINT signal handler. */
5000 async_initialize_sigint_signal_handler (void)
5002 signal (SIGINT
, async_handle_remote_sigint
);
5005 /* Signal handler for SIGINT, while the target is executing. */
5007 async_handle_remote_sigint (int sig
)
5009 signal (sig
, async_handle_remote_sigint_twice
);
5010 mark_async_signal_handler (async_sigint_remote_token
);
5013 /* Signal handler for SIGINT, installed after SIGINT has already been
5014 sent once. It will take effect the second time that the user sends
5017 async_handle_remote_sigint_twice (int sig
)
5019 signal (sig
, async_handle_remote_sigint
);
5020 mark_async_signal_handler (async_sigint_remote_twice_token
);
5023 /* Perform the real interruption of the target execution, in response
5026 async_remote_interrupt (gdb_client_data arg
)
5029 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5031 target_stop (inferior_ptid
);
5034 /* Perform interrupt, if the first attempt did not succeed. Just give
5035 up on the target alltogether. */
5037 async_remote_interrupt_twice (gdb_client_data arg
)
5040 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5045 /* Reinstall the usual SIGINT handlers, after the target has
5048 async_cleanup_sigint_signal_handler (void *dummy
)
5050 signal (SIGINT
, handle_sigint
);
5053 /* Send ^C to target to halt it. Target will respond, and send us a
5055 static void (*ofunc
) (int);
5057 /* The command line interface's stop routine. This function is installed
5058 as a signal handler for SIGINT. The first time a user requests a
5059 stop, we call remote_stop to send a break or ^C. If there is no
5060 response from the target (it didn't stop when the user requested it),
5061 we ask the user if he'd like to detach from the target. */
5063 sync_remote_interrupt (int signo
)
5065 /* If this doesn't work, try more severe steps. */
5066 signal (signo
, sync_remote_interrupt_twice
);
5068 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5071 /* The user typed ^C twice. */
5074 sync_remote_interrupt_twice (int signo
)
5076 signal (signo
, ofunc
);
5077 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5078 signal (signo
, sync_remote_interrupt
);
5081 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5082 thread, all threads of a remote process, or all threads of all
5086 remote_stop_ns (ptid_t ptid
)
5088 struct remote_state
*rs
= get_remote_state ();
5090 char *endp
= rs
->buf
+ get_remote_packet_size ();
5092 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5093 remote_vcont_probe (rs
);
5095 if (!rs
->supports_vCont
.t
)
5096 error (_("Remote server does not support stopping threads"));
5098 if (ptid_equal (ptid
, minus_one_ptid
)
5099 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5100 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5105 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5107 if (ptid_is_pid (ptid
))
5108 /* All (-1) threads of process. */
5109 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5112 /* Small optimization: if we already have a stop reply for
5113 this thread, no use in telling the stub we want this
5115 if (peek_stop_reply (ptid
))
5121 write_ptid (p
, endp
, nptid
);
5124 /* In non-stop, we get an immediate OK reply. The stop reply will
5125 come in asynchronously by notification. */
5127 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5128 if (strcmp (rs
->buf
, "OK") != 0)
5129 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5132 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5133 remote target. It is undefined which thread of which process
5134 reports the stop. */
5137 remote_stop_as (ptid_t ptid
)
5139 struct remote_state
*rs
= get_remote_state ();
5141 rs
->ctrlc_pending_p
= 1;
5143 /* If the inferior is stopped already, but the core didn't know
5144 about it yet, just ignore the request. The cached wait status
5145 will be collected in remote_wait. */
5146 if (rs
->cached_wait_status
)
5149 /* Send interrupt_sequence to remote target. */
5150 send_interrupt_sequence ();
5153 /* This is the generic stop called via the target vector. When a target
5154 interrupt is requested, either by the command line or the GUI, we
5155 will eventually end up here. */
5158 remote_stop (ptid_t ptid
)
5161 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5164 remote_stop_ns (ptid
);
5166 remote_stop_as (ptid
);
5169 /* Ask the user what to do when an interrupt is received. */
5172 interrupt_query (void)
5174 target_terminal_ours ();
5176 if (target_can_async_p ())
5178 signal (SIGINT
, handle_sigint
);
5183 if (query (_("Interrupted while waiting for the program.\n\
5184 Give up (and stop debugging it)? ")))
5186 remote_unpush_target ();
5191 target_terminal_inferior ();
5194 /* Enable/disable target terminal ownership. Most targets can use
5195 terminal groups to control terminal ownership. Remote targets are
5196 different in that explicit transfer of ownership to/from GDB/target
5200 remote_terminal_inferior (void)
5202 if (!target_async_permitted
)
5203 /* Nothing to do. */
5206 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5207 idempotent. The event-loop GDB talking to an asynchronous target
5208 with a synchronous command calls this function from both
5209 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5210 transfer the terminal to the target when it shouldn't this guard
5212 if (!remote_async_terminal_ours_p
)
5214 delete_file_handler (input_fd
);
5215 remote_async_terminal_ours_p
= 0;
5216 async_initialize_sigint_signal_handler ();
5217 /* NOTE: At this point we could also register our selves as the
5218 recipient of all input. Any characters typed could then be
5219 passed on down to the target. */
5223 remote_terminal_ours (void)
5225 if (!target_async_permitted
)
5226 /* Nothing to do. */
5229 /* See FIXME in remote_terminal_inferior. */
5230 if (remote_async_terminal_ours_p
)
5232 async_cleanup_sigint_signal_handler (NULL
);
5233 add_file_handler (input_fd
, stdin_event_handler
, 0);
5234 remote_async_terminal_ours_p
= 1;
5238 remote_console_output (char *msg
)
5242 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5245 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5249 fputs_unfiltered (tb
, gdb_stdtarg
);
5251 gdb_flush (gdb_stdtarg
);
5254 typedef struct cached_reg
5257 gdb_byte data
[MAX_REGISTER_SIZE
];
5260 DEF_VEC_O(cached_reg_t
);
5262 typedef struct stop_reply
5264 struct notif_event base
;
5266 /* The identifier of the thread about this event */
5269 struct target_waitstatus ws
;
5271 /* Expedited registers. This makes remote debugging a bit more
5272 efficient for those targets that provide critical registers as
5273 part of their normal status mechanism (as another roundtrip to
5274 fetch them is avoided). */
5275 VEC(cached_reg_t
) *regcache
;
5277 int stopped_by_watchpoint_p
;
5278 CORE_ADDR watch_data_address
;
5286 DECLARE_QUEUE_P (stop_reply_p
);
5287 DEFINE_QUEUE_P (stop_reply_p
);
5288 /* The list of already fetched and acknowledged stop events. This
5289 queue is used for notification Stop, and other notifications
5290 don't need queue for their events, because the notification events
5291 of Stop can't be consumed immediately, so that events should be
5292 queued first, and be consumed by remote_wait_{ns,as} one per
5293 time. Other notifications can consume their events immediately,
5294 so queue is not needed for them. */
5295 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5298 stop_reply_xfree (struct stop_reply
*r
)
5302 VEC_free (cached_reg_t
, r
->regcache
);
5308 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5309 struct notif_event
*event
)
5311 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5315 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5316 struct notif_event
*event
)
5318 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5321 putpkt ((char *) self
->ack_command
);
5323 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5324 /* We got an unknown stop reply. */
5325 error (_("Unknown stop reply"));
5327 push_stop_reply (stop_reply
);
5331 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5333 /* We can't get pending events in remote_notif_process for
5334 notification stop, and we have to do this in remote_wait_ns
5335 instead. If we fetch all queued events from stub, remote stub
5336 may exit and we have no chance to process them back in
5338 mark_async_event_handler (remote_async_inferior_event_token
);
5343 stop_reply_dtr (struct notif_event
*event
)
5345 struct stop_reply
*r
= (struct stop_reply
*) event
;
5347 VEC_free (cached_reg_t
, r
->regcache
);
5350 static struct notif_event
*
5351 remote_notif_stop_alloc_reply (void)
5353 struct notif_event
*r
5354 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5356 r
->dtr
= stop_reply_dtr
;
5361 /* A client of notification Stop. */
5363 struct notif_client notif_client_stop
=
5367 remote_notif_stop_parse
,
5368 remote_notif_stop_ack
,
5369 remote_notif_stop_can_get_pending_events
,
5370 remote_notif_stop_alloc_reply
,
5374 /* A parameter to pass data in and out. */
5376 struct queue_iter_param
5379 struct stop_reply
*output
;
5382 /* Remove all queue elements meet the condition it checks. */
5385 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5386 QUEUE_ITER (stop_reply_p
) *iter
,
5390 struct queue_iter_param
*param
= data
;
5391 struct inferior
*inf
= param
->input
;
5393 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5395 stop_reply_xfree (event
);
5396 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5402 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5403 discard everything. */
5406 discard_pending_stop_replies (struct inferior
*inf
)
5409 struct queue_iter_param param
;
5410 struct stop_reply
*reply
5411 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5413 /* Discard the in-flight notification. */
5416 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5418 stop_reply_xfree (reply
);
5419 notif_client_stop
.pending_event
= NULL
;
5423 param
.output
= NULL
;
5424 /* Discard the stop replies we have already pulled with
5426 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5427 remote_notif_remove_all
, ¶m
);
5430 /* A parameter to pass data in and out. */
5433 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5434 QUEUE_ITER (stop_reply_p
) *iter
,
5438 struct queue_iter_param
*param
= data
;
5439 ptid_t
*ptid
= param
->input
;
5441 if (ptid_match (event
->ptid
, *ptid
))
5443 param
->output
= event
;
5444 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5451 /* Remove the first reply in 'stop_reply_queue' which matches
5454 static struct stop_reply
*
5455 remote_notif_remove_queued_reply (ptid_t ptid
)
5457 struct queue_iter_param param
;
5459 param
.input
= &ptid
;
5460 param
.output
= NULL
;
5462 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5463 remote_notif_remove_once_on_match
, ¶m
);
5465 fprintf_unfiltered (gdb_stdlog
,
5466 "notif: discard queued event: 'Stop' in %s\n",
5467 target_pid_to_str (ptid
));
5469 return param
.output
;
5472 /* Look for a queued stop reply belonging to PTID. If one is found,
5473 remove it from the queue, and return it. Returns NULL if none is
5474 found. If there are still queued events left to process, tell the
5475 event loop to get back to target_wait soon. */
5477 static struct stop_reply
*
5478 queued_stop_reply (ptid_t ptid
)
5480 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5482 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5483 /* There's still at least an event left. */
5484 mark_async_event_handler (remote_async_inferior_event_token
);
5489 /* Push a fully parsed stop reply in the stop reply queue. Since we
5490 know that we now have at least one queued event left to pass to the
5491 core side, tell the event loop to get back to target_wait soon. */
5494 push_stop_reply (struct stop_reply
*new_event
)
5496 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5499 fprintf_unfiltered (gdb_stdlog
,
5500 "notif: push 'Stop' %s to queue %d\n",
5501 target_pid_to_str (new_event
->ptid
),
5502 QUEUE_length (stop_reply_p
,
5505 mark_async_event_handler (remote_async_inferior_event_token
);
5509 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5510 QUEUE_ITER (stop_reply_p
) *iter
,
5511 struct stop_reply
*event
,
5514 ptid_t
*ptid
= data
;
5516 return !(ptid_equal (*ptid
, event
->ptid
)
5517 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5520 /* Returns true if we have a stop reply for PTID. */
5523 peek_stop_reply (ptid_t ptid
)
5525 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5526 stop_reply_match_ptid_and_ws
, &ptid
);
5529 /* Parse the stop reply in BUF. Either the function succeeds, and the
5530 result is stored in EVENT, or throws an error. */
5533 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5535 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5539 event
->ptid
= null_ptid
;
5540 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5541 event
->ws
.value
.integer
= 0;
5542 event
->solibs_changed
= 0;
5543 event
->replay_event
= 0;
5544 event
->stopped_by_watchpoint_p
= 0;
5545 event
->regcache
= NULL
;
5550 case 'T': /* Status with PC, SP, FP, ... */
5551 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5552 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5554 n... = register number
5555 r... = register contents
5558 p
= &buf
[3]; /* after Txx */
5566 /* If the packet contains a register number, save it in
5567 pnum and set p1 to point to the character following it.
5568 Otherwise p1 points to p. */
5570 /* If this packet is an awatch packet, don't parse the 'a'
5571 as a register number. */
5573 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5574 && strncmp (p
, "core", strlen ("core") != 0))
5576 /* Read the ``P'' register number. */
5577 pnum
= strtol (p
, &p_temp
, 16);
5583 if (p1
== p
) /* No register number present here. */
5585 p1
= strchr (p
, ':');
5587 error (_("Malformed packet(a) (missing colon): %s\n\
5590 if (strncmp (p
, "thread", p1
- p
) == 0)
5591 event
->ptid
= read_ptid (++p1
, &p
);
5592 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5593 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5594 || (strncmp (p
, "awatch", p1
- p
) == 0))
5596 event
->stopped_by_watchpoint_p
= 1;
5597 p
= unpack_varlen_hex (++p1
, &addr
);
5598 event
->watch_data_address
= (CORE_ADDR
) addr
;
5600 else if (strncmp (p
, "library", p1
- p
) == 0)
5604 while (*p_temp
&& *p_temp
!= ';')
5607 event
->solibs_changed
= 1;
5610 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5612 /* NO_HISTORY event.
5613 p1 will indicate "begin" or "end", but
5614 it makes no difference for now, so ignore it. */
5615 event
->replay_event
= 1;
5616 p_temp
= strchr (p1
+ 1, ';');
5620 else if (strncmp (p
, "core", p1
- p
) == 0)
5624 p
= unpack_varlen_hex (++p1
, &c
);
5629 /* Silently skip unknown optional info. */
5630 p_temp
= strchr (p1
+ 1, ';');
5637 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5638 cached_reg_t cached_reg
;
5643 error (_("Malformed packet(b) (missing colon): %s\n\
5649 error (_("Remote sent bad register number %s: %s\n\
5651 hex_string (pnum
), p
, buf
);
5653 cached_reg
.num
= reg
->regnum
;
5655 fieldsize
= hex2bin (p
, cached_reg
.data
,
5656 register_size (target_gdbarch (),
5659 if (fieldsize
< register_size (target_gdbarch (),
5661 warning (_("Remote reply is too short: %s"), buf
);
5663 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5667 error (_("Remote register badly formatted: %s\nhere: %s"),
5672 case 'S': /* Old style status, just signal only. */
5673 if (event
->solibs_changed
)
5674 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5675 else if (event
->replay_event
)
5676 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5679 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5680 event
->ws
.value
.sig
= (enum gdb_signal
)
5681 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5684 case 'W': /* Target exited. */
5691 /* GDB used to accept only 2 hex chars here. Stubs should
5692 only send more if they detect GDB supports multi-process
5694 p
= unpack_varlen_hex (&buf
[1], &value
);
5698 /* The remote process exited. */
5699 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5700 event
->ws
.value
.integer
= value
;
5704 /* The remote process exited with a signal. */
5705 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5706 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5709 /* If no process is specified, assume inferior_ptid. */
5710 pid
= ptid_get_pid (inferior_ptid
);
5719 else if (strncmp (p
,
5720 "process:", sizeof ("process:") - 1) == 0)
5724 p
+= sizeof ("process:") - 1;
5725 unpack_varlen_hex (p
, &upid
);
5729 error (_("unknown stop reply packet: %s"), buf
);
5732 error (_("unknown stop reply packet: %s"), buf
);
5733 event
->ptid
= pid_to_ptid (pid
);
5738 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5739 error (_("No process or thread specified in stop reply: %s"), buf
);
5742 /* When the stub wants to tell GDB about a new notification reply, it
5743 sends a notification (%Stop, for example). Those can come it at
5744 any time, hence, we have to make sure that any pending
5745 putpkt/getpkt sequence we're making is finished, before querying
5746 the stub for more events with the corresponding ack command
5747 (vStopped, for example). E.g., if we started a vStopped sequence
5748 immediately upon receiving the notification, something like this
5756 1.6) <-- (registers reply to step #1.3)
5758 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5761 To solve this, whenever we parse a %Stop notification successfully,
5762 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5763 doing whatever we were doing:
5769 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5770 2.5) <-- (registers reply to step #2.3)
5772 Eventualy after step #2.5, we return to the event loop, which
5773 notices there's an event on the
5774 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5775 associated callback --- the function below. At this point, we're
5776 always safe to start a vStopped sequence. :
5779 2.7) <-- T05 thread:2
5785 remote_notif_get_pending_events (struct notif_client
*nc
)
5787 struct remote_state
*rs
= get_remote_state ();
5789 if (nc
->pending_event
)
5792 fprintf_unfiltered (gdb_stdlog
,
5793 "notif: process: '%s' ack pending event\n",
5797 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5798 nc
->pending_event
= NULL
;
5802 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5803 if (strcmp (rs
->buf
, "OK") == 0)
5806 remote_notif_ack (nc
, rs
->buf
);
5812 fprintf_unfiltered (gdb_stdlog
,
5813 "notif: process: '%s' no pending reply\n",
5818 /* Called when it is decided that STOP_REPLY holds the info of the
5819 event that is to be returned to the core. This function always
5820 destroys STOP_REPLY. */
5823 process_stop_reply (struct stop_reply
*stop_reply
,
5824 struct target_waitstatus
*status
)
5828 *status
= stop_reply
->ws
;
5829 ptid
= stop_reply
->ptid
;
5831 /* If no thread/process was reported by the stub, assume the current
5833 if (ptid_equal (ptid
, null_ptid
))
5834 ptid
= inferior_ptid
;
5836 if (status
->kind
!= TARGET_WAITKIND_EXITED
5837 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5839 /* Expedited registers. */
5840 if (stop_reply
->regcache
)
5842 struct regcache
*regcache
5843 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5848 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5850 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5851 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5854 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5855 remote_watch_data_address
= stop_reply
->watch_data_address
;
5857 remote_notice_new_inferior (ptid
, 0);
5858 demand_private_info (ptid
)->core
= stop_reply
->core
;
5861 stop_reply_xfree (stop_reply
);
5865 /* The non-stop mode version of target_wait. */
5868 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5870 struct remote_state
*rs
= get_remote_state ();
5871 struct stop_reply
*stop_reply
;
5875 /* If in non-stop mode, get out of getpkt even if a
5876 notification is received. */
5878 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5879 0 /* forever */, &is_notif
);
5882 if (ret
!= -1 && !is_notif
)
5885 case 'E': /* Error of some sort. */
5886 /* We're out of sync with the target now. Did it continue
5887 or not? We can't tell which thread it was in non-stop,
5888 so just ignore this. */
5889 warning (_("Remote failure reply: %s"), rs
->buf
);
5891 case 'O': /* Console output. */
5892 remote_console_output (rs
->buf
+ 1);
5895 warning (_("Invalid remote reply: %s"), rs
->buf
);
5899 /* Acknowledge a pending stop reply that may have arrived in the
5901 if (notif_client_stop
.pending_event
!= NULL
)
5902 remote_notif_get_pending_events (¬if_client_stop
);
5904 /* If indeed we noticed a stop reply, we're done. */
5905 stop_reply
= queued_stop_reply (ptid
);
5906 if (stop_reply
!= NULL
)
5907 return process_stop_reply (stop_reply
, status
);
5909 /* Still no event. If we're just polling for an event, then
5910 return to the event loop. */
5911 if (options
& TARGET_WNOHANG
)
5913 status
->kind
= TARGET_WAITKIND_IGNORE
;
5914 return minus_one_ptid
;
5917 /* Otherwise do a blocking wait. */
5918 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5919 1 /* forever */, &is_notif
);
5923 /* Wait until the remote machine stops, then return, storing status in
5924 STATUS just as `wait' would. */
5927 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5929 struct remote_state
*rs
= get_remote_state ();
5930 ptid_t event_ptid
= null_ptid
;
5932 struct stop_reply
*stop_reply
;
5936 status
->kind
= TARGET_WAITKIND_IGNORE
;
5937 status
->value
.integer
= 0;
5939 stop_reply
= queued_stop_reply (ptid
);
5940 if (stop_reply
!= NULL
)
5941 return process_stop_reply (stop_reply
, status
);
5943 if (rs
->cached_wait_status
)
5944 /* Use the cached wait status, but only once. */
5945 rs
->cached_wait_status
= 0;
5951 if (!target_is_async_p ())
5953 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5954 /* If the user hit C-c before this packet, or between packets,
5955 pretend that it was hit right here. */
5956 if (check_quit_flag ())
5959 sync_remote_interrupt (SIGINT
);
5963 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5964 _never_ wait for ever -> test on target_is_async_p().
5965 However, before we do that we need to ensure that the caller
5966 knows how to take the target into/out of async mode. */
5967 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5968 wait_forever_enabled_p
, &is_notif
);
5970 if (!target_is_async_p ())
5971 signal (SIGINT
, ofunc
);
5973 /* GDB gets a notification. Return to core as this event is
5975 if (ret
!= -1 && is_notif
)
5976 return minus_one_ptid
;
5981 remote_stopped_by_watchpoint_p
= 0;
5983 /* We got something. */
5984 rs
->waiting_for_stop_reply
= 0;
5986 /* Assume that the target has acknowledged Ctrl-C unless we receive
5987 an 'F' or 'O' packet. */
5988 if (buf
[0] != 'F' && buf
[0] != 'O')
5989 rs
->ctrlc_pending_p
= 0;
5993 case 'E': /* Error of some sort. */
5994 /* We're out of sync with the target now. Did it continue or
5995 not? Not is more likely, so report a stop. */
5996 warning (_("Remote failure reply: %s"), buf
);
5997 status
->kind
= TARGET_WAITKIND_STOPPED
;
5998 status
->value
.sig
= GDB_SIGNAL_0
;
6000 case 'F': /* File-I/O request. */
6001 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6002 rs
->ctrlc_pending_p
= 0;
6004 case 'T': case 'S': case 'X': case 'W':
6006 struct stop_reply
*stop_reply
6007 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6010 event_ptid
= process_stop_reply (stop_reply
, status
);
6013 case 'O': /* Console output. */
6014 remote_console_output (buf
+ 1);
6016 /* The target didn't really stop; keep waiting. */
6017 rs
->waiting_for_stop_reply
= 1;
6021 if (last_sent_signal
!= GDB_SIGNAL_0
)
6023 /* Zero length reply means that we tried 'S' or 'C' and the
6024 remote system doesn't support it. */
6025 target_terminal_ours_for_output ();
6027 ("Can't send signals to this remote system. %s not sent.\n",
6028 gdb_signal_to_name (last_sent_signal
));
6029 last_sent_signal
= GDB_SIGNAL_0
;
6030 target_terminal_inferior ();
6032 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
6033 putpkt ((char *) buf
);
6035 /* We just told the target to resume, so a stop reply is in
6037 rs
->waiting_for_stop_reply
= 1;
6040 /* else fallthrough */
6042 warning (_("Invalid remote reply: %s"), buf
);
6044 rs
->waiting_for_stop_reply
= 1;
6048 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6050 /* Nothing interesting happened. If we're doing a non-blocking
6051 poll, we're done. Otherwise, go back to waiting. */
6052 if (options
& TARGET_WNOHANG
)
6053 return minus_one_ptid
;
6057 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6058 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6060 if (!ptid_equal (event_ptid
, null_ptid
))
6061 record_currthread (event_ptid
);
6063 event_ptid
= inferior_ptid
;
6066 /* A process exit. Invalidate our notion of current thread. */
6067 record_currthread (minus_one_ptid
);
6072 /* Wait until the remote machine stops, then return, storing status in
6073 STATUS just as `wait' would. */
6076 remote_wait (struct target_ops
*ops
,
6077 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6082 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6084 event_ptid
= remote_wait_as (ptid
, status
, options
);
6086 if (target_can_async_p ())
6088 /* If there are are events left in the queue tell the event loop
6090 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6091 mark_async_event_handler (remote_async_inferior_event_token
);
6097 /* Fetch a single register using a 'p' packet. */
6100 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6102 struct remote_state
*rs
= get_remote_state ();
6104 char regp
[MAX_REGISTER_SIZE
];
6107 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6110 if (reg
->pnum
== -1)
6115 p
+= hexnumstr (p
, reg
->pnum
);
6118 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6122 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6126 case PACKET_UNKNOWN
:
6129 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6130 gdbarch_register_name (get_regcache_arch (regcache
),
6135 /* If this register is unfetchable, tell the regcache. */
6138 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6142 /* Otherwise, parse and supply the value. */
6148 error (_("fetch_register_using_p: early buf termination"));
6150 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6153 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6157 /* Fetch the registers included in the target's 'g' packet. */
6160 send_g_packet (void)
6162 struct remote_state
*rs
= get_remote_state ();
6165 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6166 remote_send (&rs
->buf
, &rs
->buf_size
);
6168 /* We can get out of synch in various cases. If the first character
6169 in the buffer is not a hex character, assume that has happened
6170 and try to fetch another packet to read. */
6171 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6172 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6173 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6174 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6177 fprintf_unfiltered (gdb_stdlog
,
6178 "Bad register packet; fetching a new packet\n");
6179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6182 buf_len
= strlen (rs
->buf
);
6184 /* Sanity check the received packet. */
6185 if (buf_len
% 2 != 0)
6186 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6192 process_g_packet (struct regcache
*regcache
)
6194 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6195 struct remote_state
*rs
= get_remote_state ();
6196 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6201 buf_len
= strlen (rs
->buf
);
6203 /* Further sanity checks, with knowledge of the architecture. */
6204 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6205 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6207 /* Save the size of the packet sent to us by the target. It is used
6208 as a heuristic when determining the max size of packets that the
6209 target can safely receive. */
6210 if (rsa
->actual_register_packet_size
== 0)
6211 rsa
->actual_register_packet_size
= buf_len
;
6213 /* If this is smaller than we guessed the 'g' packet would be,
6214 update our records. A 'g' reply that doesn't include a register's
6215 value implies either that the register is not available, or that
6216 the 'p' packet must be used. */
6217 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6219 rsa
->sizeof_g_packet
= buf_len
/ 2;
6221 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6223 if (rsa
->regs
[i
].pnum
== -1)
6226 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6227 rsa
->regs
[i
].in_g_packet
= 0;
6229 rsa
->regs
[i
].in_g_packet
= 1;
6233 regs
= alloca (rsa
->sizeof_g_packet
);
6235 /* Unimplemented registers read as all bits zero. */
6236 memset (regs
, 0, rsa
->sizeof_g_packet
);
6238 /* Reply describes registers byte by byte, each byte encoded as two
6239 hex characters. Suck them all up, then supply them to the
6240 register cacheing/storage mechanism. */
6243 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6245 if (p
[0] == 0 || p
[1] == 0)
6246 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6247 internal_error (__FILE__
, __LINE__
,
6248 _("unexpected end of 'g' packet reply"));
6250 if (p
[0] == 'x' && p
[1] == 'x')
6251 regs
[i
] = 0; /* 'x' */
6253 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6257 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6259 struct packet_reg
*r
= &rsa
->regs
[i
];
6263 if (r
->offset
* 2 >= strlen (rs
->buf
))
6264 /* This shouldn't happen - we adjusted in_g_packet above. */
6265 internal_error (__FILE__
, __LINE__
,
6266 _("unexpected end of 'g' packet reply"));
6267 else if (rs
->buf
[r
->offset
* 2] == 'x')
6269 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6270 /* The register isn't available, mark it as such (at
6271 the same time setting the value to zero). */
6272 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6275 regcache_raw_supply (regcache
, r
->regnum
,
6282 fetch_registers_using_g (struct regcache
*regcache
)
6285 process_g_packet (regcache
);
6288 /* Make the remote selected traceframe match GDB's selected
6292 set_remote_traceframe (void)
6296 if (remote_traceframe_number
== get_traceframe_number ())
6299 /* Avoid recursion, remote_trace_find calls us again. */
6300 remote_traceframe_number
= get_traceframe_number ();
6302 newnum
= target_trace_find (tfind_number
,
6303 get_traceframe_number (), 0, 0, NULL
);
6305 /* Should not happen. If it does, all bets are off. */
6306 if (newnum
!= get_traceframe_number ())
6307 warning (_("could not set remote traceframe"));
6311 remote_fetch_registers (struct target_ops
*ops
,
6312 struct regcache
*regcache
, int regnum
)
6314 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6317 set_remote_traceframe ();
6318 set_general_thread (inferior_ptid
);
6322 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6324 gdb_assert (reg
!= NULL
);
6326 /* If this register might be in the 'g' packet, try that first -
6327 we are likely to read more than one register. If this is the
6328 first 'g' packet, we might be overly optimistic about its
6329 contents, so fall back to 'p'. */
6330 if (reg
->in_g_packet
)
6332 fetch_registers_using_g (regcache
);
6333 if (reg
->in_g_packet
)
6337 if (fetch_register_using_p (regcache
, reg
))
6340 /* This register is not available. */
6341 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6346 fetch_registers_using_g (regcache
);
6348 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6349 if (!rsa
->regs
[i
].in_g_packet
)
6350 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6352 /* This register is not available. */
6353 regcache_raw_supply (regcache
, i
, NULL
);
6357 /* Prepare to store registers. Since we may send them all (using a
6358 'G' request), we have to read out the ones we don't want to change
6362 remote_prepare_to_store (struct regcache
*regcache
)
6364 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6366 gdb_byte buf
[MAX_REGISTER_SIZE
];
6368 /* Make sure the entire registers array is valid. */
6369 switch (remote_protocol_packets
[PACKET_P
].support
)
6371 case PACKET_DISABLE
:
6372 case PACKET_SUPPORT_UNKNOWN
:
6373 /* Make sure all the necessary registers are cached. */
6374 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6375 if (rsa
->regs
[i
].in_g_packet
)
6376 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6383 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6384 packet was not recognized. */
6387 store_register_using_P (const struct regcache
*regcache
,
6388 struct packet_reg
*reg
)
6390 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6391 struct remote_state
*rs
= get_remote_state ();
6392 /* Try storing a single register. */
6393 char *buf
= rs
->buf
;
6394 gdb_byte regp
[MAX_REGISTER_SIZE
];
6397 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6400 if (reg
->pnum
== -1)
6403 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6404 p
= buf
+ strlen (buf
);
6405 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6406 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6408 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6410 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6415 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6416 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6417 case PACKET_UNKNOWN
:
6420 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6424 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6425 contents of the register cache buffer. FIXME: ignores errors. */
6428 store_registers_using_G (const struct regcache
*regcache
)
6430 struct remote_state
*rs
= get_remote_state ();
6431 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6435 /* Extract all the registers in the regcache copying them into a
6440 regs
= alloca (rsa
->sizeof_g_packet
);
6441 memset (regs
, 0, rsa
->sizeof_g_packet
);
6442 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6444 struct packet_reg
*r
= &rsa
->regs
[i
];
6447 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6451 /* Command describes registers byte by byte,
6452 each byte encoded as two hex characters. */
6455 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6457 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6459 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6460 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6461 error (_("Could not write registers; remote failure reply '%s'"),
6465 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6466 of the register cache buffer. FIXME: ignores errors. */
6469 remote_store_registers (struct target_ops
*ops
,
6470 struct regcache
*regcache
, int regnum
)
6472 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6475 set_remote_traceframe ();
6476 set_general_thread (inferior_ptid
);
6480 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6482 gdb_assert (reg
!= NULL
);
6484 /* Always prefer to store registers using the 'P' packet if
6485 possible; we often change only a small number of registers.
6486 Sometimes we change a larger number; we'd need help from a
6487 higher layer to know to use 'G'. */
6488 if (store_register_using_P (regcache
, reg
))
6491 /* For now, don't complain if we have no way to write the
6492 register. GDB loses track of unavailable registers too
6493 easily. Some day, this may be an error. We don't have
6494 any way to read the register, either... */
6495 if (!reg
->in_g_packet
)
6498 store_registers_using_G (regcache
);
6502 store_registers_using_G (regcache
);
6504 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6505 if (!rsa
->regs
[i
].in_g_packet
)
6506 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6507 /* See above for why we do not issue an error here. */
6512 /* Return the number of hex digits in num. */
6515 hexnumlen (ULONGEST num
)
6519 for (i
= 0; num
!= 0; i
++)
6525 /* Set BUF to the minimum number of hex digits representing NUM. */
6528 hexnumstr (char *buf
, ULONGEST num
)
6530 int len
= hexnumlen (num
);
6532 return hexnumnstr (buf
, num
, len
);
6536 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6539 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6545 for (i
= width
- 1; i
>= 0; i
--)
6547 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6554 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6557 remote_address_masked (CORE_ADDR addr
)
6559 unsigned int address_size
= remote_address_size
;
6561 /* If "remoteaddresssize" was not set, default to target address size. */
6563 address_size
= gdbarch_addr_bit (target_gdbarch ());
6565 if (address_size
> 0
6566 && address_size
< (sizeof (ULONGEST
) * 8))
6568 /* Only create a mask when that mask can safely be constructed
6569 in a ULONGEST variable. */
6572 mask
= (mask
<< address_size
) - 1;
6578 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6579 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6580 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6581 (which may be more than *OUT_LEN due to escape characters). The
6582 total number of bytes in the output buffer will be at most
6586 remote_escape_output (const gdb_byte
*buffer
, int len
,
6587 gdb_byte
*out_buf
, int *out_len
,
6590 int input_index
, output_index
;
6593 for (input_index
= 0; input_index
< len
; input_index
++)
6595 gdb_byte b
= buffer
[input_index
];
6597 if (b
== '$' || b
== '#' || b
== '}')
6599 /* These must be escaped. */
6600 if (output_index
+ 2 > out_maxlen
)
6602 out_buf
[output_index
++] = '}';
6603 out_buf
[output_index
++] = b
^ 0x20;
6607 if (output_index
+ 1 > out_maxlen
)
6609 out_buf
[output_index
++] = b
;
6613 *out_len
= input_index
;
6614 return output_index
;
6617 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6618 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6619 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6621 This function reverses remote_escape_output. It allows more
6622 escaped characters than that function does, in particular because
6623 '*' must be escaped to avoid the run-length encoding processing
6624 in reading packets. */
6627 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6628 gdb_byte
*out_buf
, int out_maxlen
)
6630 int input_index
, output_index
;
6635 for (input_index
= 0; input_index
< len
; input_index
++)
6637 gdb_byte b
= buffer
[input_index
];
6639 if (output_index
+ 1 > out_maxlen
)
6641 warning (_("Received too much data from remote target;"
6642 " ignoring overflow."));
6643 return output_index
;
6648 out_buf
[output_index
++] = b
^ 0x20;
6654 out_buf
[output_index
++] = b
;
6658 error (_("Unmatched escape character in target response."));
6660 return output_index
;
6663 /* Determine whether the remote target supports binary downloading.
6664 This is accomplished by sending a no-op memory write of zero length
6665 to the target at the specified address. It does not suffice to send
6666 the whole packet, since many stubs strip the eighth bit and
6667 subsequently compute a wrong checksum, which causes real havoc with
6670 NOTE: This can still lose if the serial line is not eight-bit
6671 clean. In cases like this, the user should clear "remote
6675 check_binary_download (CORE_ADDR addr
)
6677 struct remote_state
*rs
= get_remote_state ();
6679 switch (remote_protocol_packets
[PACKET_X
].support
)
6681 case PACKET_DISABLE
:
6685 case PACKET_SUPPORT_UNKNOWN
:
6691 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6693 p
+= hexnumstr (p
, (ULONGEST
) 0);
6697 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6698 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6700 if (rs
->buf
[0] == '\0')
6703 fprintf_unfiltered (gdb_stdlog
,
6704 "binary downloading NOT "
6705 "supported by target\n");
6706 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6711 fprintf_unfiltered (gdb_stdlog
,
6712 "binary downloading supported by target\n");
6713 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6720 /* Write memory data directly to the remote machine.
6721 This does not inform the data cache; the data cache uses this.
6722 HEADER is the starting part of the packet.
6723 MEMADDR is the address in the remote memory space.
6724 MYADDR is the address of the buffer in our space.
6725 LEN is the number of bytes.
6726 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6727 should send data as binary ('X'), or hex-encoded ('M').
6729 The function creates packet of the form
6730 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6732 where encoding of <DATA> is termined by PACKET_FORMAT.
6734 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6737 Returns the number of bytes transferred, or 0 (setting errno) for
6738 error. Only transfer a single packet. */
6741 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6742 const gdb_byte
*myaddr
, ssize_t len
,
6743 char packet_format
, int use_length
)
6745 struct remote_state
*rs
= get_remote_state ();
6755 if (packet_format
!= 'X' && packet_format
!= 'M')
6756 internal_error (__FILE__
, __LINE__
,
6757 _("remote_write_bytes_aux: bad packet format"));
6762 payload_size
= get_memory_write_packet_size ();
6764 /* The packet buffer will be large enough for the payload;
6765 get_memory_packet_size ensures this. */
6768 /* Compute the size of the actual payload by subtracting out the
6769 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6771 payload_size
-= strlen ("$,:#NN");
6773 /* The comma won't be used. */
6775 header_length
= strlen (header
);
6776 payload_size
-= header_length
;
6777 payload_size
-= hexnumlen (memaddr
);
6779 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6781 strcat (rs
->buf
, header
);
6782 p
= rs
->buf
+ strlen (header
);
6784 /* Compute a best guess of the number of bytes actually transfered. */
6785 if (packet_format
== 'X')
6787 /* Best guess at number of bytes that will fit. */
6788 todo
= min (len
, payload_size
);
6790 payload_size
-= hexnumlen (todo
);
6791 todo
= min (todo
, payload_size
);
6795 /* Num bytes that will fit. */
6796 todo
= min (len
, payload_size
/ 2);
6798 payload_size
-= hexnumlen (todo
);
6799 todo
= min (todo
, payload_size
/ 2);
6803 internal_error (__FILE__
, __LINE__
,
6804 _("minimum packet size too small to write data"));
6806 /* If we already need another packet, then try to align the end
6807 of this packet to a useful boundary. */
6808 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6809 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6811 /* Append "<memaddr>". */
6812 memaddr
= remote_address_masked (memaddr
);
6813 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6820 /* Append <len>. Retain the location/size of <len>. It may need to
6821 be adjusted once the packet body has been created. */
6823 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6831 /* Append the packet body. */
6832 if (packet_format
== 'X')
6834 /* Binary mode. Send target system values byte by byte, in
6835 increasing byte addresses. Only escape certain critical
6837 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6838 &nr_bytes
, payload_size
);
6840 /* If not all TODO bytes fit, then we'll need another packet. Make
6841 a second try to keep the end of the packet aligned. Don't do
6842 this if the packet is tiny. */
6843 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6847 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6849 if (new_nr_bytes
!= nr_bytes
)
6850 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6851 (gdb_byte
*) p
, &nr_bytes
,
6855 p
+= payload_length
;
6856 if (use_length
&& nr_bytes
< todo
)
6858 /* Escape chars have filled up the buffer prematurely,
6859 and we have actually sent fewer bytes than planned.
6860 Fix-up the length field of the packet. Use the same
6861 number of characters as before. */
6862 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6863 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6868 /* Normal mode: Send target system values byte by byte, in
6869 increasing byte addresses. Each byte is encoded as a two hex
6871 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6875 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6876 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6878 if (rs
->buf
[0] == 'E')
6880 /* There is no correspondance between what the remote protocol
6881 uses for errors and errno codes. We would like a cleaner way
6882 of representing errors (big enough to include errno codes,
6883 bfd_error codes, and others). But for now just return EIO. */
6888 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6889 fewer bytes than we'd planned. */
6893 /* Write memory data directly to the remote machine.
6894 This does not inform the data cache; the data cache uses this.
6895 MEMADDR is the address in the remote memory space.
6896 MYADDR is the address of the buffer in our space.
6897 LEN is the number of bytes.
6899 Returns number of bytes transferred, or 0 (setting errno) for
6900 error. Only transfer a single packet. */
6903 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6905 char *packet_format
= 0;
6907 /* Check whether the target supports binary download. */
6908 check_binary_download (memaddr
);
6910 switch (remote_protocol_packets
[PACKET_X
].support
)
6913 packet_format
= "X";
6915 case PACKET_DISABLE
:
6916 packet_format
= "M";
6918 case PACKET_SUPPORT_UNKNOWN
:
6919 internal_error (__FILE__
, __LINE__
,
6920 _("remote_write_bytes: bad internal state"));
6922 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6925 return remote_write_bytes_aux (packet_format
,
6926 memaddr
, myaddr
, len
, packet_format
[0], 1);
6929 /* Read memory data directly from the remote machine.
6930 This does not use the data cache; the data cache uses this.
6931 MEMADDR is the address in the remote memory space.
6932 MYADDR is the address of the buffer in our space.
6933 LEN is the number of bytes.
6935 Returns number of bytes transferred, or 0 for error. */
6938 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6940 struct remote_state
*rs
= get_remote_state ();
6941 int max_buf_size
; /* Max size of packet output buffer. */
6949 max_buf_size
= get_memory_read_packet_size ();
6950 /* The packet buffer will be large enough for the payload;
6951 get_memory_packet_size ensures this. */
6953 /* Number if bytes that will fit. */
6954 todo
= min (len
, max_buf_size
/ 2);
6956 /* Construct "m"<memaddr>","<len>". */
6957 memaddr
= remote_address_masked (memaddr
);
6960 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6962 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6965 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6966 if (rs
->buf
[0] == 'E'
6967 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6968 && rs
->buf
[3] == '\0')
6970 /* There is no correspondance between what the remote protocol
6971 uses for errors and errno codes. We would like a cleaner way
6972 of representing errors (big enough to include errno codes,
6973 bfd_error codes, and others). But for now just return
6978 /* Reply describes memory byte by byte, each byte encoded as two hex
6981 i
= hex2bin (p
, myaddr
, todo
);
6982 /* Return what we have. Let higher layers handle partial reads. */
6987 /* Read or write LEN bytes from inferior memory at MEMADDR,
6988 transferring to or from debugger address BUFFER. Write to inferior
6989 if SHOULD_WRITE is nonzero. Returns length of data written or
6990 read; 0 for error. TARGET is unused. */
6993 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6994 int should_write
, struct mem_attrib
*attrib
,
6995 struct target_ops
*target
)
6999 set_remote_traceframe ();
7000 set_general_thread (inferior_ptid
);
7003 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
7005 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
7010 /* Sends a packet with content determined by the printf format string
7011 FORMAT and the remaining arguments, then gets the reply. Returns
7012 whether the packet was a success, a failure, or unknown. */
7014 static enum packet_result
7015 remote_send_printf (const char *format
, ...)
7017 struct remote_state
*rs
= get_remote_state ();
7018 int max_size
= get_remote_packet_size ();
7021 va_start (ap
, format
);
7024 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7025 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7027 if (putpkt (rs
->buf
) < 0)
7028 error (_("Communication problem with target."));
7031 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7033 return packet_check_result (rs
->buf
);
7037 restore_remote_timeout (void *p
)
7039 int value
= *(int *)p
;
7041 remote_timeout
= value
;
7044 /* Flash writing can take quite some time. We'll set
7045 effectively infinite timeout for flash operations.
7046 In future, we'll need to decide on a better approach. */
7047 static const int remote_flash_timeout
= 1000;
7050 remote_flash_erase (struct target_ops
*ops
,
7051 ULONGEST address
, LONGEST length
)
7053 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7054 int saved_remote_timeout
= remote_timeout
;
7055 enum packet_result ret
;
7056 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7057 &saved_remote_timeout
);
7059 remote_timeout
= remote_flash_timeout
;
7061 ret
= remote_send_printf ("vFlashErase:%s,%s",
7062 phex (address
, addr_size
),
7066 case PACKET_UNKNOWN
:
7067 error (_("Remote target does not support flash erase"));
7069 error (_("Error erasing flash with vFlashErase packet"));
7074 do_cleanups (back_to
);
7078 remote_flash_write (struct target_ops
*ops
,
7079 ULONGEST address
, LONGEST length
,
7080 const gdb_byte
*data
)
7082 int saved_remote_timeout
= remote_timeout
;
7084 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7085 &saved_remote_timeout
);
7087 remote_timeout
= remote_flash_timeout
;
7088 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
7089 do_cleanups (back_to
);
7095 remote_flash_done (struct target_ops
*ops
)
7097 int saved_remote_timeout
= remote_timeout
;
7099 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7100 &saved_remote_timeout
);
7102 remote_timeout
= remote_flash_timeout
;
7103 ret
= remote_send_printf ("vFlashDone");
7104 do_cleanups (back_to
);
7108 case PACKET_UNKNOWN
:
7109 error (_("Remote target does not support vFlashDone"));
7111 error (_("Error finishing flash operation"));
7118 remote_files_info (struct target_ops
*ignore
)
7120 puts_filtered ("Debugging a target over a serial line.\n");
7123 /* Stuff for dealing with the packets which are part of this protocol.
7124 See comment at top of file for details. */
7126 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7127 error to higher layers. Called when a serial error is detected.
7128 The exception message is STRING, followed by a colon and a blank,
7129 the system error message for errno at function entry and final dot
7130 for output compatibility with throw_perror_with_name. */
7133 unpush_and_perror (const char *string
)
7135 int saved_errno
= errno
;
7137 remote_unpush_target ();
7138 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7139 safe_strerror (saved_errno
));
7142 /* Read a single character from the remote end. */
7145 readchar (int timeout
)
7149 ch
= serial_readchar (remote_desc
, timeout
);
7154 switch ((enum serial_rc
) ch
)
7157 remote_unpush_target ();
7158 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7161 unpush_and_perror (_("Remote communication error. "
7162 "Target disconnected."));
7164 case SERIAL_TIMEOUT
:
7170 /* Wrapper for serial_write that closes the target and throws if
7174 remote_serial_write (const char *str
, int len
)
7176 if (serial_write (remote_desc
, str
, len
))
7178 unpush_and_perror (_("Remote communication error. "
7179 "Target disconnected."));
7183 /* Send the command in *BUF to the remote machine, and read the reply
7184 into *BUF. Report an error if we get an error reply. Resize
7185 *BUF using xrealloc if necessary to hold the result, and update
7189 remote_send (char **buf
,
7193 getpkt (buf
, sizeof_buf
, 0);
7195 if ((*buf
)[0] == 'E')
7196 error (_("Remote failure reply: %s"), *buf
);
7199 /* Return a pointer to an xmalloc'ed string representing an escaped
7200 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7201 etc. The caller is responsible for releasing the returned
7205 escape_buffer (const char *buf
, int n
)
7207 struct cleanup
*old_chain
;
7208 struct ui_file
*stb
;
7211 stb
= mem_fileopen ();
7212 old_chain
= make_cleanup_ui_file_delete (stb
);
7214 fputstrn_unfiltered (buf
, n
, 0, stb
);
7215 str
= ui_file_xstrdup (stb
, NULL
);
7216 do_cleanups (old_chain
);
7220 /* Display a null-terminated packet on stdout, for debugging, using C
7224 print_packet (char *buf
)
7226 puts_filtered ("\"");
7227 fputstr_filtered (buf
, '"', gdb_stdout
);
7228 puts_filtered ("\"");
7234 return putpkt_binary (buf
, strlen (buf
));
7237 /* Send a packet to the remote machine, with error checking. The data
7238 of the packet is in BUF. The string in BUF can be at most
7239 get_remote_packet_size () - 5 to account for the $, # and checksum,
7240 and for a possible /0 if we are debugging (remote_debug) and want
7241 to print the sent packet as a string. */
7244 putpkt_binary (char *buf
, int cnt
)
7246 struct remote_state
*rs
= get_remote_state ();
7248 unsigned char csum
= 0;
7249 char *buf2
= alloca (cnt
+ 6);
7256 /* Catch cases like trying to read memory or listing threads while
7257 we're waiting for a stop reply. The remote server wouldn't be
7258 ready to handle this request, so we'd hang and timeout. We don't
7259 have to worry about this in synchronous mode, because in that
7260 case it's not possible to issue a command while the target is
7261 running. This is not a problem in non-stop mode, because in that
7262 case, the stub is always ready to process serial input. */
7263 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7264 error (_("Cannot execute this command while the target is running."));
7266 /* We're sending out a new packet. Make sure we don't look at a
7267 stale cached response. */
7268 rs
->cached_wait_status
= 0;
7270 /* Copy the packet into buffer BUF2, encapsulating it
7271 and giving it a checksum. */
7276 for (i
= 0; i
< cnt
; i
++)
7282 *p
++ = tohex ((csum
>> 4) & 0xf);
7283 *p
++ = tohex (csum
& 0xf);
7285 /* Send it over and over until we get a positive ack. */
7289 int started_error_output
= 0;
7293 struct cleanup
*old_chain
;
7297 str
= escape_buffer (buf2
, p
- buf2
);
7298 old_chain
= make_cleanup (xfree
, str
);
7299 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7300 gdb_flush (gdb_stdlog
);
7301 do_cleanups (old_chain
);
7303 remote_serial_write (buf2
, p
- buf2
);
7305 /* If this is a no acks version of the remote protocol, send the
7306 packet and move on. */
7310 /* Read until either a timeout occurs (-2) or '+' is read.
7311 Handle any notification that arrives in the mean time. */
7314 ch
= readchar (remote_timeout
);
7322 case SERIAL_TIMEOUT
:
7325 if (started_error_output
)
7327 putchar_unfiltered ('\n');
7328 started_error_output
= 0;
7337 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7341 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7343 case SERIAL_TIMEOUT
:
7347 break; /* Retransmit buffer. */
7351 fprintf_unfiltered (gdb_stdlog
,
7352 "Packet instead of Ack, ignoring it\n");
7353 /* It's probably an old response sent because an ACK
7354 was lost. Gobble up the packet and ack it so it
7355 doesn't get retransmitted when we resend this
7358 remote_serial_write ("+", 1);
7359 continue; /* Now, go look for +. */
7366 /* If we got a notification, handle it, and go back to looking
7368 /* We've found the start of a notification. Now
7369 collect the data. */
7370 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7375 struct cleanup
*old_chain
;
7378 str
= escape_buffer (rs
->buf
, val
);
7379 old_chain
= make_cleanup (xfree
, str
);
7380 fprintf_unfiltered (gdb_stdlog
,
7381 " Notification received: %s\n",
7383 do_cleanups (old_chain
);
7385 handle_notification (rs
->buf
);
7386 /* We're in sync now, rewait for the ack. */
7393 if (!started_error_output
)
7395 started_error_output
= 1;
7396 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7398 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7399 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7408 if (!started_error_output
)
7410 started_error_output
= 1;
7411 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7413 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7417 break; /* Here to retransmit. */
7421 /* This is wrong. If doing a long backtrace, the user should be
7422 able to get out next time we call QUIT, without anything as
7423 violent as interrupt_query. If we want to provide a way out of
7424 here without getting to the next QUIT, it should be based on
7425 hitting ^C twice as in remote_wait. */
7436 /* Come here after finding the start of a frame when we expected an
7437 ack. Do our best to discard the rest of this packet. */
7446 c
= readchar (remote_timeout
);
7449 case SERIAL_TIMEOUT
:
7450 /* Nothing we can do. */
7453 /* Discard the two bytes of checksum and stop. */
7454 c
= readchar (remote_timeout
);
7456 c
= readchar (remote_timeout
);
7459 case '*': /* Run length encoding. */
7460 /* Discard the repeat count. */
7461 c
= readchar (remote_timeout
);
7466 /* A regular character. */
7472 /* Come here after finding the start of the frame. Collect the rest
7473 into *BUF, verifying the checksum, length, and handling run-length
7474 compression. NUL terminate the buffer. If there is not enough room,
7475 expand *BUF using xrealloc.
7477 Returns -1 on error, number of characters in buffer (ignoring the
7478 trailing NULL) on success. (could be extended to return one of the
7479 SERIAL status indications). */
7482 read_frame (char **buf_p
,
7489 struct remote_state
*rs
= get_remote_state ();
7496 c
= readchar (remote_timeout
);
7499 case SERIAL_TIMEOUT
:
7501 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7505 fputs_filtered ("Saw new packet start in middle of old one\n",
7507 return -1; /* Start a new packet, count retries. */
7510 unsigned char pktcsum
;
7516 check_0
= readchar (remote_timeout
);
7518 check_1
= readchar (remote_timeout
);
7520 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7523 fputs_filtered ("Timeout in checksum, retrying\n",
7527 else if (check_0
< 0 || check_1
< 0)
7530 fputs_filtered ("Communication error in checksum\n",
7535 /* Don't recompute the checksum; with no ack packets we
7536 don't have any way to indicate a packet retransmission
7541 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7542 if (csum
== pktcsum
)
7547 struct cleanup
*old_chain
;
7550 str
= escape_buffer (buf
, bc
);
7551 old_chain
= make_cleanup (xfree
, str
);
7552 fprintf_unfiltered (gdb_stdlog
,
7553 "Bad checksum, sentsum=0x%x, "
7554 "csum=0x%x, buf=%s\n",
7555 pktcsum
, csum
, str
);
7556 do_cleanups (old_chain
);
7558 /* Number of characters in buffer ignoring trailing
7562 case '*': /* Run length encoding. */
7567 c
= readchar (remote_timeout
);
7569 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7571 /* The character before ``*'' is repeated. */
7573 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7575 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7577 /* Make some more room in the buffer. */
7578 *sizeof_buf
+= repeat
;
7579 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7583 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7589 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7593 if (bc
>= *sizeof_buf
- 1)
7595 /* Make some more room in the buffer. */
7597 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7608 /* Read a packet from the remote machine, with error checking, and
7609 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7610 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7611 rather than timing out; this is used (in synchronous mode) to wait
7612 for a target that is is executing user code to stop. */
7613 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7614 don't have to change all the calls to getpkt to deal with the
7615 return value, because at the moment I don't know what the right
7616 thing to do it for those. */
7624 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7628 /* Read a packet from the remote machine, with error checking, and
7629 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7630 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7631 rather than timing out; this is used (in synchronous mode) to wait
7632 for a target that is is executing user code to stop. If FOREVER ==
7633 0, this function is allowed to time out gracefully and return an
7634 indication of this to the caller. Otherwise return the number of
7635 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7636 enough reason to return to the caller. *IS_NOTIF is an output
7637 boolean that indicates whether *BUF holds a notification or not
7638 (a regular packet). */
7641 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7642 int expecting_notif
, int *is_notif
)
7644 struct remote_state
*rs
= get_remote_state ();
7650 /* We're reading a new response. Make sure we don't look at a
7651 previously cached response. */
7652 rs
->cached_wait_status
= 0;
7654 strcpy (*buf
, "timeout");
7657 timeout
= watchdog
> 0 ? watchdog
: -1;
7658 else if (expecting_notif
)
7659 timeout
= 0; /* There should already be a char in the buffer. If
7662 timeout
= remote_timeout
;
7666 /* Process any number of notifications, and then return when
7670 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7672 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7674 /* This can loop forever if the remote side sends us
7675 characters continuously, but if it pauses, we'll get
7676 SERIAL_TIMEOUT from readchar because of timeout. Then
7677 we'll count that as a retry.
7679 Note that even when forever is set, we will only wait
7680 forever prior to the start of a packet. After that, we
7681 expect characters to arrive at a brisk pace. They should
7682 show up within remote_timeout intervals. */
7684 c
= readchar (timeout
);
7685 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7687 if (c
== SERIAL_TIMEOUT
)
7689 if (expecting_notif
)
7690 return -1; /* Don't complain, it's normal to not get
7691 anything in this case. */
7693 if (forever
) /* Watchdog went off? Kill the target. */
7696 remote_unpush_target ();
7697 throw_error (TARGET_CLOSE_ERROR
,
7698 _("Watchdog timeout has expired. "
7699 "Target detached."));
7702 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7706 /* We've found the start of a packet or notification.
7707 Now collect the data. */
7708 val
= read_frame (buf
, sizeof_buf
);
7713 remote_serial_write ("-", 1);
7716 if (tries
> MAX_TRIES
)
7718 /* We have tried hard enough, and just can't receive the
7719 packet/notification. Give up. */
7720 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7722 /* Skip the ack char if we're in no-ack mode. */
7723 if (!rs
->noack_mode
)
7724 remote_serial_write ("+", 1);
7728 /* If we got an ordinary packet, return that to our caller. */
7733 struct cleanup
*old_chain
;
7736 str
= escape_buffer (*buf
, val
);
7737 old_chain
= make_cleanup (xfree
, str
);
7738 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7739 do_cleanups (old_chain
);
7742 /* Skip the ack char if we're in no-ack mode. */
7743 if (!rs
->noack_mode
)
7744 remote_serial_write ("+", 1);
7745 if (is_notif
!= NULL
)
7750 /* If we got a notification, handle it, and go back to looking
7754 gdb_assert (c
== '%');
7758 struct cleanup
*old_chain
;
7761 str
= escape_buffer (*buf
, val
);
7762 old_chain
= make_cleanup (xfree
, str
);
7763 fprintf_unfiltered (gdb_stdlog
,
7764 " Notification received: %s\n",
7766 do_cleanups (old_chain
);
7768 if (is_notif
!= NULL
)
7771 handle_notification (*buf
);
7773 /* Notifications require no acknowledgement. */
7775 if (expecting_notif
)
7782 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7784 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7788 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7791 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7796 /* A helper function that just calls putpkt; for type correctness. */
7799 putpkt_for_catch_errors (void *arg
)
7801 return putpkt (arg
);
7805 remote_kill (struct target_ops
*ops
)
7807 /* Use catch_errors so the user can quit from gdb even when we
7808 aren't on speaking terms with the remote system. */
7809 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7811 /* Don't wait for it to die. I'm not really sure it matters whether
7812 we do or not. For the existing stubs, kill is a noop. */
7813 target_mourn_inferior ();
7817 remote_vkill (int pid
, struct remote_state
*rs
)
7819 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7822 /* Tell the remote target to detach. */
7823 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7825 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7827 if (packet_ok (rs
->buf
,
7828 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7830 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7837 extended_remote_kill (struct target_ops
*ops
)
7840 int pid
= ptid_get_pid (inferior_ptid
);
7841 struct remote_state
*rs
= get_remote_state ();
7843 res
= remote_vkill (pid
, rs
);
7844 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7846 /* Don't try 'k' on a multi-process aware stub -- it has no way
7847 to specify the pid. */
7851 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7852 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7855 /* Don't wait for it to die. I'm not really sure it matters whether
7856 we do or not. For the existing stubs, kill is a noop. */
7862 error (_("Can't kill process"));
7864 target_mourn_inferior ();
7868 remote_mourn (struct target_ops
*ops
)
7870 remote_mourn_1 (ops
);
7873 /* Worker function for remote_mourn. */
7875 remote_mourn_1 (struct target_ops
*target
)
7877 unpush_target (target
);
7879 /* remote_close takes care of doing most of the clean up. */
7880 generic_mourn_inferior ();
7884 extended_remote_mourn_1 (struct target_ops
*target
)
7886 struct remote_state
*rs
= get_remote_state ();
7888 /* In case we got here due to an error, but we're going to stay
7890 rs
->waiting_for_stop_reply
= 0;
7892 /* If the current general thread belonged to the process we just
7893 detached from or has exited, the remote side current general
7894 thread becomes undefined. Considering a case like this:
7896 - We just got here due to a detach.
7897 - The process that we're detaching from happens to immediately
7898 report a global breakpoint being hit in non-stop mode, in the
7899 same thread we had selected before.
7900 - GDB attaches to this process again.
7901 - This event happens to be the next event we handle.
7903 GDB would consider that the current general thread didn't need to
7904 be set on the stub side (with Hg), since for all it knew,
7905 GENERAL_THREAD hadn't changed.
7907 Notice that although in all-stop mode, the remote server always
7908 sets the current thread to the thread reporting the stop event,
7909 that doesn't happen in non-stop mode; in non-stop, the stub *must
7910 not* change the current thread when reporting a breakpoint hit,
7911 due to the decoupling of event reporting and event handling.
7913 To keep things simple, we always invalidate our notion of the
7915 record_currthread (minus_one_ptid
);
7917 /* Unlike "target remote", we do not want to unpush the target; then
7918 the next time the user says "run", we won't be connected. */
7920 /* Call common code to mark the inferior as not running. */
7921 generic_mourn_inferior ();
7923 if (!have_inferiors ())
7925 if (!remote_multi_process_p (rs
))
7927 /* Check whether the target is running now - some remote stubs
7928 automatically restart after kill. */
7930 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7932 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7934 /* Assume that the target has been restarted. Set
7935 inferior_ptid so that bits of core GDB realizes
7936 there's something here, e.g., so that the user can
7937 say "kill" again. */
7938 inferior_ptid
= magic_null_ptid
;
7945 extended_remote_mourn (struct target_ops
*ops
)
7947 extended_remote_mourn_1 (ops
);
7951 extended_remote_supports_disable_randomization (void)
7953 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7958 extended_remote_disable_randomization (int val
)
7960 struct remote_state
*rs
= get_remote_state ();
7963 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7966 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7968 error (_("Target does not support QDisableRandomization."));
7969 if (strcmp (reply
, "OK") != 0)
7970 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7974 extended_remote_run (char *args
)
7976 struct remote_state
*rs
= get_remote_state ();
7979 /* If the user has disabled vRun support, or we have detected that
7980 support is not available, do not try it. */
7981 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7984 strcpy (rs
->buf
, "vRun;");
7985 len
= strlen (rs
->buf
);
7987 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7988 error (_("Remote file name too long for run packet"));
7989 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7991 gdb_assert (args
!= NULL
);
7994 struct cleanup
*back_to
;
7998 argv
= gdb_buildargv (args
);
7999 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
8000 for (i
= 0; argv
[i
] != NULL
; i
++)
8002 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8003 error (_("Argument list too long for run packet"));
8004 rs
->buf
[len
++] = ';';
8005 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
8007 do_cleanups (back_to
);
8010 rs
->buf
[len
++] = '\0';
8013 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8015 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
8017 /* We have a wait response. All is well. */
8020 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
8021 /* It wasn't disabled before, but it is now. */
8025 if (remote_exec_file
[0] == '\0')
8026 error (_("Running the default executable on the remote target failed; "
8027 "try \"set remote exec-file\"?"));
8029 error (_("Running \"%s\" on the remote target failed"),
8034 /* In the extended protocol we want to be able to do things like
8035 "run" and have them basically work as expected. So we need
8036 a special create_inferior function. We support changing the
8037 executable file and the command line arguments, but not the
8041 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
8042 char **env
, int from_tty
)
8046 struct remote_state
*rs
= get_remote_state ();
8048 /* If running asynchronously, register the target file descriptor
8049 with the event loop. */
8050 if (target_can_async_p ())
8051 target_async (inferior_event_handler
, 0);
8053 /* Disable address space randomization if requested (and supported). */
8054 if (extended_remote_supports_disable_randomization ())
8055 extended_remote_disable_randomization (disable_randomization
);
8057 /* Now restart the remote server. */
8058 run_worked
= extended_remote_run (args
) != -1;
8061 /* vRun was not supported. Fail if we need it to do what the
8063 if (remote_exec_file
[0])
8064 error (_("Remote target does not support \"set remote exec-file\""));
8066 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8068 /* Fall back to "R". */
8069 extended_remote_restart ();
8072 if (!have_inferiors ())
8074 /* Clean up from the last time we ran, before we mark the target
8075 running again. This will mark breakpoints uninserted, and
8076 get_offsets may insert breakpoints. */
8077 init_thread_list ();
8078 init_wait_for_inferior ();
8081 /* vRun's success return is a stop reply. */
8082 stop_reply
= run_worked
? rs
->buf
: NULL
;
8083 add_current_inferior_and_thread (stop_reply
);
8085 /* Get updated offsets, if the stub uses qOffsets. */
8090 extended_remote_create_inferior (struct target_ops
*ops
,
8091 char *exec_file
, char *args
,
8092 char **env
, int from_tty
)
8094 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
8098 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8099 the list of conditions (in agent expression bytecode format), if any, the
8100 target needs to evaluate. The output is placed into the packet buffer
8101 started from BUF and ended at BUF_END. */
8104 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8105 struct bp_target_info
*bp_tgt
, char *buf
,
8108 struct agent_expr
*aexpr
= NULL
;
8111 char *buf_start
= buf
;
8113 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8116 buf
+= strlen (buf
);
8117 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8120 /* Send conditions to the target and free the vector. */
8122 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8125 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8126 buf
+= strlen (buf
);
8127 for (i
= 0; i
< aexpr
->len
; ++i
)
8128 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8132 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8137 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8138 struct bp_target_info
*bp_tgt
, char *buf
)
8140 struct agent_expr
*aexpr
= NULL
;
8143 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8146 buf
+= strlen (buf
);
8148 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8149 buf
+= strlen (buf
);
8151 /* Concatenate all the agent expressions that are commands into the
8154 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8157 sprintf (buf
, "X%x,", aexpr
->len
);
8158 buf
+= strlen (buf
);
8159 for (i
= 0; i
< aexpr
->len
; ++i
)
8160 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8164 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8167 /* Insert a breakpoint. On targets that have software breakpoint
8168 support, we ask the remote target to do the work; on targets
8169 which don't, we insert a traditional memory breakpoint. */
8172 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8173 struct bp_target_info
*bp_tgt
)
8175 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8176 If it succeeds, then set the support to PACKET_ENABLE. If it
8177 fails, and the user has explicitly requested the Z support then
8178 report an error, otherwise, mark it disabled and go on. */
8180 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8182 CORE_ADDR addr
= bp_tgt
->placed_address
;
8183 struct remote_state
*rs
;
8186 struct condition_list
*cond
= NULL
;
8188 /* Make sure the remote is pointing at the right process, if
8190 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8191 set_general_process ();
8193 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8195 rs
= get_remote_state ();
8197 endbuf
= rs
->buf
+ get_remote_packet_size ();
8202 addr
= (ULONGEST
) remote_address_masked (addr
);
8203 p
+= hexnumstr (p
, addr
);
8204 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8206 if (remote_supports_cond_breakpoints ())
8207 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8209 if (remote_can_run_breakpoint_commands ())
8210 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8213 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8215 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8220 bp_tgt
->placed_address
= addr
;
8221 bp_tgt
->placed_size
= bpsize
;
8223 case PACKET_UNKNOWN
:
8228 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8232 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8233 struct bp_target_info
*bp_tgt
)
8235 CORE_ADDR addr
= bp_tgt
->placed_address
;
8236 struct remote_state
*rs
= get_remote_state ();
8238 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8241 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8243 /* Make sure the remote is pointing at the right process, if
8245 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8246 set_general_process ();
8252 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8253 p
+= hexnumstr (p
, addr
);
8254 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8257 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8259 return (rs
->buf
[0] == 'E');
8262 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8266 watchpoint_to_Z_packet (int type
)
8271 return Z_PACKET_WRITE_WP
;
8274 return Z_PACKET_READ_WP
;
8277 return Z_PACKET_ACCESS_WP
;
8280 internal_error (__FILE__
, __LINE__
,
8281 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8286 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8287 struct expression
*cond
)
8289 struct remote_state
*rs
= get_remote_state ();
8290 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8292 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8294 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8297 /* Make sure the remote is pointing at the right process, if
8299 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8300 set_general_process ();
8302 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8303 p
= strchr (rs
->buf
, '\0');
8304 addr
= remote_address_masked (addr
);
8305 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8306 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8309 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8311 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8315 case PACKET_UNKNOWN
:
8320 internal_error (__FILE__
, __LINE__
,
8321 _("remote_insert_watchpoint: reached end of function"));
8325 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8326 CORE_ADDR start
, int length
)
8328 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8330 return diff
< length
;
8335 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8336 struct expression
*cond
)
8338 struct remote_state
*rs
= get_remote_state ();
8339 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8341 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8343 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8346 /* Make sure the remote is pointing at the right process, if
8348 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8349 set_general_process ();
8351 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8352 p
= strchr (rs
->buf
, '\0');
8353 addr
= remote_address_masked (addr
);
8354 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8355 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8357 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8359 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8362 case PACKET_UNKNOWN
:
8367 internal_error (__FILE__
, __LINE__
,
8368 _("remote_remove_watchpoint: reached end of function"));
8372 int remote_hw_watchpoint_limit
= -1;
8373 int remote_hw_watchpoint_length_limit
= -1;
8374 int remote_hw_breakpoint_limit
= -1;
8377 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8379 if (remote_hw_watchpoint_length_limit
== 0)
8381 else if (remote_hw_watchpoint_length_limit
< 0)
8383 else if (len
<= remote_hw_watchpoint_length_limit
)
8390 remote_check_watch_resources (int type
, int cnt
, int ot
)
8392 if (type
== bp_hardware_breakpoint
)
8394 if (remote_hw_breakpoint_limit
== 0)
8396 else if (remote_hw_breakpoint_limit
< 0)
8398 else if (cnt
<= remote_hw_breakpoint_limit
)
8403 if (remote_hw_watchpoint_limit
== 0)
8405 else if (remote_hw_watchpoint_limit
< 0)
8409 else if (cnt
<= remote_hw_watchpoint_limit
)
8416 remote_stopped_by_watchpoint (void)
8418 return remote_stopped_by_watchpoint_p
;
8422 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8426 if (remote_stopped_by_watchpoint ())
8428 *addr_p
= remote_watch_data_address
;
8437 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8438 struct bp_target_info
*bp_tgt
)
8441 struct remote_state
*rs
;
8445 /* The length field should be set to the size of a breakpoint
8446 instruction, even though we aren't inserting one ourselves. */
8448 gdbarch_remote_breakpoint_from_pc
8449 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8451 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8454 /* Make sure the remote is pointing at the right process, if
8456 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8457 set_general_process ();
8459 rs
= get_remote_state ();
8461 endbuf
= rs
->buf
+ get_remote_packet_size ();
8467 addr
= remote_address_masked (bp_tgt
->placed_address
);
8468 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8469 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8471 if (remote_supports_cond_breakpoints ())
8472 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8474 if (remote_can_run_breakpoint_commands ())
8475 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8478 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8480 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8483 if (rs
->buf
[1] == '.')
8485 message
= strchr (rs
->buf
+ 2, '.');
8487 error (_("Remote failure reply: %s"), message
+ 1);
8490 case PACKET_UNKNOWN
:
8495 internal_error (__FILE__
, __LINE__
,
8496 _("remote_insert_hw_breakpoint: reached end of function"));
8501 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8502 struct bp_target_info
*bp_tgt
)
8505 struct remote_state
*rs
= get_remote_state ();
8507 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8509 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8512 /* Make sure the remote is pointing at the right process, if
8514 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8515 set_general_process ();
8521 addr
= remote_address_masked (bp_tgt
->placed_address
);
8522 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8523 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8526 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8528 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8531 case PACKET_UNKNOWN
:
8536 internal_error (__FILE__
, __LINE__
,
8537 _("remote_remove_hw_breakpoint: reached end of function"));
8540 /* Verify memory using the "qCRC:" request. */
8543 remote_verify_memory (struct target_ops
*ops
,
8544 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8546 struct remote_state
*rs
= get_remote_state ();
8547 unsigned long host_crc
, target_crc
;
8550 /* Make sure the remote is pointing at the right process. */
8551 set_general_process ();
8553 /* FIXME: assumes lma can fit into long. */
8554 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8555 (long) lma
, (long) size
);
8558 /* Be clever; compute the host_crc before waiting for target
8560 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8562 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8563 if (rs
->buf
[0] == 'E')
8566 if (rs
->buf
[0] != 'C')
8567 error (_("remote target does not support this operation"));
8569 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8570 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8572 return (host_crc
== target_crc
);
8575 /* compare-sections command
8577 With no arguments, compares each loadable section in the exec bfd
8578 with the same memory range on the target, and reports mismatches.
8579 Useful for verifying the image on the target against the exec file. */
8582 compare_sections_command (char *args
, int from_tty
)
8585 struct cleanup
*old_chain
;
8587 const char *sectname
;
8595 error (_("command cannot be used without an exec file"));
8597 /* Make sure the remote is pointing at the right process. */
8598 set_general_process ();
8600 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8602 if (!(s
->flags
& SEC_LOAD
))
8603 continue; /* Skip non-loadable section. */
8605 size
= bfd_get_section_size (s
);
8607 continue; /* Skip zero-length section. */
8609 sectname
= bfd_get_section_name (exec_bfd
, s
);
8610 if (args
&& strcmp (args
, sectname
) != 0)
8611 continue; /* Not the section selected by user. */
8613 matched
= 1; /* Do this section. */
8616 sectdata
= xmalloc (size
);
8617 old_chain
= make_cleanup (xfree
, sectdata
);
8618 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8620 res
= target_verify_memory (sectdata
, lma
, size
);
8623 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8624 paddress (target_gdbarch (), lma
),
8625 paddress (target_gdbarch (), lma
+ size
));
8627 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8628 paddress (target_gdbarch (), lma
),
8629 paddress (target_gdbarch (), lma
+ size
));
8631 printf_filtered ("matched.\n");
8634 printf_filtered ("MIS-MATCHED!\n");
8638 do_cleanups (old_chain
);
8641 warning (_("One or more sections of the remote executable does not match\n\
8642 the loaded file\n"));
8643 if (args
&& !matched
)
8644 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8647 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8648 into remote target. The number of bytes written to the remote
8649 target is returned, or -1 for error. */
8652 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8653 const char *annex
, const gdb_byte
*writebuf
,
8654 ULONGEST offset
, LONGEST len
,
8655 struct packet_config
*packet
)
8659 struct remote_state
*rs
= get_remote_state ();
8660 int max_size
= get_memory_write_packet_size ();
8662 if (packet
->support
== PACKET_DISABLE
)
8665 /* Insert header. */
8666 i
= snprintf (rs
->buf
, max_size
,
8667 "qXfer:%s:write:%s:%s:",
8668 object_name
, annex
? annex
: "",
8669 phex_nz (offset
, sizeof offset
));
8670 max_size
-= (i
+ 1);
8672 /* Escape as much data as fits into rs->buf. */
8673 buf_len
= remote_escape_output
8674 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8676 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8677 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8678 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8681 unpack_varlen_hex (rs
->buf
, &n
);
8685 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8686 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8687 number of bytes read is returned, or 0 for EOF, or -1 for error.
8688 The number of bytes read may be less than LEN without indicating an
8689 EOF. PACKET is checked and updated to indicate whether the remote
8690 target supports this object. */
8693 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8695 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8696 struct packet_config
*packet
)
8698 static char *finished_object
;
8699 static char *finished_annex
;
8700 static ULONGEST finished_offset
;
8702 struct remote_state
*rs
= get_remote_state ();
8703 LONGEST i
, n
, packet_len
;
8705 if (packet
->support
== PACKET_DISABLE
)
8708 /* Check whether we've cached an end-of-object packet that matches
8710 if (finished_object
)
8712 if (strcmp (object_name
, finished_object
) == 0
8713 && strcmp (annex
? annex
: "", finished_annex
) == 0
8714 && offset
== finished_offset
)
8717 /* Otherwise, we're now reading something different. Discard
8719 xfree (finished_object
);
8720 xfree (finished_annex
);
8721 finished_object
= NULL
;
8722 finished_annex
= NULL
;
8725 /* Request only enough to fit in a single packet. The actual data
8726 may not, since we don't know how much of it will need to be escaped;
8727 the target is free to respond with slightly less data. We subtract
8728 five to account for the response type and the protocol frame. */
8729 n
= min (get_remote_packet_size () - 5, len
);
8730 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8731 object_name
, annex
? annex
: "",
8732 phex_nz (offset
, sizeof offset
),
8733 phex_nz (n
, sizeof n
));
8734 i
= putpkt (rs
->buf
);
8739 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8740 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8743 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8744 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8746 /* 'm' means there is (or at least might be) more data after this
8747 batch. That does not make sense unless there's at least one byte
8748 of data in this reply. */
8749 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8750 error (_("Remote qXfer reply contained no data."));
8752 /* Got some data. */
8753 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8754 packet_len
- 1, readbuf
, n
);
8756 /* 'l' is an EOF marker, possibly including a final block of data,
8757 or possibly empty. If we have the final block of a non-empty
8758 object, record this fact to bypass a subsequent partial read. */
8759 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8761 finished_object
= xstrdup (object_name
);
8762 finished_annex
= xstrdup (annex
? annex
: "");
8763 finished_offset
= offset
+ i
;
8770 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8771 const char *annex
, gdb_byte
*readbuf
,
8772 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8774 struct remote_state
*rs
;
8779 set_remote_traceframe ();
8780 set_general_thread (inferior_ptid
);
8782 rs
= get_remote_state ();
8784 /* Handle memory using the standard memory routines. */
8785 if (object
== TARGET_OBJECT_MEMORY
)
8791 /* If the remote target is connected but not running, we should
8792 pass this request down to a lower stratum (e.g. the executable
8794 if (!target_has_execution
)
8797 if (writebuf
!= NULL
)
8798 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8800 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8804 else if (xfered
== 0 && errno
== 0)
8810 /* Handle SPU memory using qxfer packets. */
8811 if (object
== TARGET_OBJECT_SPU
)
8814 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8815 &remote_protocol_packets
8816 [PACKET_qXfer_spu_read
]);
8818 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8819 &remote_protocol_packets
8820 [PACKET_qXfer_spu_write
]);
8823 /* Handle extra signal info using qxfer packets. */
8824 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8827 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8828 &remote_protocol_packets
8829 [PACKET_qXfer_siginfo_read
]);
8831 return remote_write_qxfer (ops
, "siginfo", annex
,
8832 writebuf
, offset
, len
,
8833 &remote_protocol_packets
8834 [PACKET_qXfer_siginfo_write
]);
8837 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8840 return remote_read_qxfer (ops
, "statictrace", annex
,
8841 readbuf
, offset
, len
,
8842 &remote_protocol_packets
8843 [PACKET_qXfer_statictrace_read
]);
8848 /* Only handle flash writes. */
8849 if (writebuf
!= NULL
)
8855 case TARGET_OBJECT_FLASH
:
8856 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8860 else if (xfered
== 0 && errno
== 0)
8870 /* Map pre-existing objects onto letters. DO NOT do this for new
8871 objects!!! Instead specify new query packets. */
8874 case TARGET_OBJECT_AVR
:
8878 case TARGET_OBJECT_AUXV
:
8879 gdb_assert (annex
== NULL
);
8880 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8881 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8883 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8884 return remote_read_qxfer
8885 (ops
, "features", annex
, readbuf
, offset
, len
,
8886 &remote_protocol_packets
[PACKET_qXfer_features
]);
8888 case TARGET_OBJECT_LIBRARIES
:
8889 return remote_read_qxfer
8890 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8891 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8893 case TARGET_OBJECT_LIBRARIES_SVR4
:
8894 return remote_read_qxfer
8895 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8896 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8898 case TARGET_OBJECT_MEMORY_MAP
:
8899 gdb_assert (annex
== NULL
);
8900 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8901 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8903 case TARGET_OBJECT_OSDATA
:
8904 /* Should only get here if we're connected. */
8905 gdb_assert (remote_desc
);
8906 return remote_read_qxfer
8907 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8908 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8910 case TARGET_OBJECT_THREADS
:
8911 gdb_assert (annex
== NULL
);
8912 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8913 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8915 case TARGET_OBJECT_TRACEFRAME_INFO
:
8916 gdb_assert (annex
== NULL
);
8917 return remote_read_qxfer
8918 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8919 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8921 case TARGET_OBJECT_FDPIC
:
8922 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8923 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8925 case TARGET_OBJECT_OPENVMS_UIB
:
8926 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8927 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8929 case TARGET_OBJECT_BTRACE
:
8930 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8931 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8937 /* Note: a zero OFFSET and LEN can be used to query the minimum
8939 if (offset
== 0 && len
== 0)
8940 return (get_remote_packet_size ());
8941 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8942 large enough let the caller deal with it. */
8943 if (len
< get_remote_packet_size ())
8945 len
= get_remote_packet_size ();
8947 /* Except for querying the minimum buffer size, target must be open. */
8949 error (_("remote query is only available after target open"));
8951 gdb_assert (annex
!= NULL
);
8952 gdb_assert (readbuf
!= NULL
);
8958 /* We used one buffer char for the remote protocol q command and
8959 another for the query type. As the remote protocol encapsulation
8960 uses 4 chars plus one extra in case we are debugging
8961 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8964 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8966 /* Bad caller may have sent forbidden characters. */
8967 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8972 gdb_assert (annex
[i
] == '\0');
8974 i
= putpkt (rs
->buf
);
8978 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8979 strcpy ((char *) readbuf
, rs
->buf
);
8981 return strlen ((char *) readbuf
);
8985 remote_search_memory (struct target_ops
* ops
,
8986 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8987 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8988 CORE_ADDR
*found_addrp
)
8990 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8991 struct remote_state
*rs
= get_remote_state ();
8992 int max_size
= get_memory_write_packet_size ();
8993 struct packet_config
*packet
=
8994 &remote_protocol_packets
[PACKET_qSearch_memory
];
8995 /* Number of packet bytes used to encode the pattern;
8996 this could be more than PATTERN_LEN due to escape characters. */
8997 int escaped_pattern_len
;
8998 /* Amount of pattern that was encodable in the packet. */
8999 int used_pattern_len
;
9002 ULONGEST found_addr
;
9004 /* Don't go to the target if we don't have to.
9005 This is done before checking packet->support to avoid the possibility that
9006 a success for this edge case means the facility works in general. */
9007 if (pattern_len
> search_space_len
)
9009 if (pattern_len
== 0)
9011 *found_addrp
= start_addr
;
9015 /* If we already know the packet isn't supported, fall back to the simple
9016 way of searching memory. */
9018 if (packet
->support
== PACKET_DISABLE
)
9020 /* Target doesn't provided special support, fall back and use the
9021 standard support (copy memory and do the search here). */
9022 return simple_search_memory (ops
, start_addr
, search_space_len
,
9023 pattern
, pattern_len
, found_addrp
);
9026 /* Make sure the remote is pointing at the right process. */
9027 set_general_process ();
9029 /* Insert header. */
9030 i
= snprintf (rs
->buf
, max_size
,
9031 "qSearch:memory:%s;%s;",
9032 phex_nz (start_addr
, addr_size
),
9033 phex_nz (search_space_len
, sizeof (search_space_len
)));
9034 max_size
-= (i
+ 1);
9036 /* Escape as much data as fits into rs->buf. */
9037 escaped_pattern_len
=
9038 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9039 &used_pattern_len
, max_size
);
9041 /* Bail if the pattern is too large. */
9042 if (used_pattern_len
!= pattern_len
)
9043 error (_("Pattern is too large to transmit to remote target."));
9045 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9046 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9047 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9049 /* The request may not have worked because the command is not
9050 supported. If so, fall back to the simple way. */
9051 if (packet
->support
== PACKET_DISABLE
)
9053 return simple_search_memory (ops
, start_addr
, search_space_len
,
9054 pattern
, pattern_len
, found_addrp
);
9059 if (rs
->buf
[0] == '0')
9061 else if (rs
->buf
[0] == '1')
9064 if (rs
->buf
[1] != ',')
9065 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9066 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9067 *found_addrp
= found_addr
;
9070 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9076 remote_rcmd (char *command
,
9077 struct ui_file
*outbuf
)
9079 struct remote_state
*rs
= get_remote_state ();
9083 error (_("remote rcmd is only available after target open"));
9085 /* Send a NULL command across as an empty command. */
9086 if (command
== NULL
)
9089 /* The query prefix. */
9090 strcpy (rs
->buf
, "qRcmd,");
9091 p
= strchr (rs
->buf
, '\0');
9093 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9094 > get_remote_packet_size ())
9095 error (_("\"monitor\" command ``%s'' is too long."), command
);
9097 /* Encode the actual command. */
9098 bin2hex ((gdb_byte
*) command
, p
, 0);
9100 if (putpkt (rs
->buf
) < 0)
9101 error (_("Communication problem with target."));
9103 /* get/display the response */
9108 /* XXX - see also remote_get_noisy_reply(). */
9109 QUIT
; /* Allow user to bail out with ^C. */
9111 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9113 /* Timeout. Continue to (try to) read responses.
9114 This is better than stopping with an error, assuming the stub
9115 is still executing the (long) monitor command.
9116 If needed, the user can interrupt gdb using C-c, obtaining
9117 an effect similar to stop on timeout. */
9122 error (_("Target does not support this command."));
9123 if (buf
[0] == 'O' && buf
[1] != 'K')
9125 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9128 if (strcmp (buf
, "OK") == 0)
9130 if (strlen (buf
) == 3 && buf
[0] == 'E'
9131 && isdigit (buf
[1]) && isdigit (buf
[2]))
9133 error (_("Protocol error with Rcmd"));
9135 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9137 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9139 fputc_unfiltered (c
, outbuf
);
9145 static VEC(mem_region_s
) *
9146 remote_memory_map (struct target_ops
*ops
)
9148 VEC(mem_region_s
) *result
= NULL
;
9149 char *text
= target_read_stralloc (¤t_target
,
9150 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9154 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9156 result
= parse_memory_map (text
);
9157 do_cleanups (back_to
);
9164 packet_command (char *args
, int from_tty
)
9166 struct remote_state
*rs
= get_remote_state ();
9169 error (_("command can only be used with remote target"));
9172 error (_("remote-packet command requires packet text as argument"));
9174 puts_filtered ("sending: ");
9175 print_packet (args
);
9176 puts_filtered ("\n");
9179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9180 puts_filtered ("received: ");
9181 print_packet (rs
->buf
);
9182 puts_filtered ("\n");
9186 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9188 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9190 static void threadset_test_cmd (char *cmd
, int tty
);
9192 static void threadalive_test (char *cmd
, int tty
);
9194 static void threadlist_test_cmd (char *cmd
, int tty
);
9196 int get_and_display_threadinfo (threadref
*ref
);
9198 static void threadinfo_test_cmd (char *cmd
, int tty
);
9200 static int thread_display_step (threadref
*ref
, void *context
);
9202 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9204 static void init_remote_threadtests (void);
9206 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9209 threadset_test_cmd (char *cmd
, int tty
)
9211 int sample_thread
= SAMPLE_THREAD
;
9213 printf_filtered (_("Remote threadset test\n"));
9214 set_general_thread (sample_thread
);
9219 threadalive_test (char *cmd
, int tty
)
9221 int sample_thread
= SAMPLE_THREAD
;
9222 int pid
= ptid_get_pid (inferior_ptid
);
9223 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9225 if (remote_thread_alive (ptid
))
9226 printf_filtered ("PASS: Thread alive test\n");
9228 printf_filtered ("FAIL: Thread alive test\n");
9231 void output_threadid (char *title
, threadref
*ref
);
9234 output_threadid (char *title
, threadref
*ref
)
9238 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9240 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9244 threadlist_test_cmd (char *cmd
, int tty
)
9247 threadref nextthread
;
9248 int done
, result_count
;
9249 threadref threadlist
[3];
9251 printf_filtered ("Remote Threadlist test\n");
9252 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9253 &result_count
, &threadlist
[0]))
9254 printf_filtered ("FAIL: threadlist test\n");
9257 threadref
*scan
= threadlist
;
9258 threadref
*limit
= scan
+ result_count
;
9260 while (scan
< limit
)
9261 output_threadid (" thread ", scan
++);
9266 display_thread_info (struct gdb_ext_thread_info
*info
)
9268 output_threadid ("Threadid: ", &info
->threadid
);
9269 printf_filtered ("Name: %s\n ", info
->shortname
);
9270 printf_filtered ("State: %s\n", info
->display
);
9271 printf_filtered ("other: %s\n\n", info
->more_display
);
9275 get_and_display_threadinfo (threadref
*ref
)
9279 struct gdb_ext_thread_info threadinfo
;
9281 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9282 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9283 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9284 display_thread_info (&threadinfo
);
9289 threadinfo_test_cmd (char *cmd
, int tty
)
9291 int athread
= SAMPLE_THREAD
;
9295 int_to_threadref (&thread
, athread
);
9296 printf_filtered ("Remote Threadinfo test\n");
9297 if (!get_and_display_threadinfo (&thread
))
9298 printf_filtered ("FAIL cannot get thread info\n");
9302 thread_display_step (threadref
*ref
, void *context
)
9304 /* output_threadid(" threadstep ",ref); *//* simple test */
9305 return get_and_display_threadinfo (ref
);
9309 threadlist_update_test_cmd (char *cmd
, int tty
)
9311 printf_filtered ("Remote Threadlist update test\n");
9312 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9316 init_remote_threadtests (void)
9318 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9319 _("Fetch and print the remote list of "
9320 "thread identifiers, one pkt only"));
9321 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9322 _("Fetch and display info about one thread"));
9323 add_com ("tset", class_obscure
, threadset_test_cmd
,
9324 _("Test setting to a different thread"));
9325 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9326 _("Iterate through updating all remote thread info"));
9327 add_com ("talive", class_obscure
, threadalive_test
,
9328 _(" Remote thread alive test "));
9333 /* Convert a thread ID to a string. Returns the string in a static
9337 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9339 static char buf
[64];
9340 struct remote_state
*rs
= get_remote_state ();
9342 if (ptid_equal (ptid
, null_ptid
))
9343 return normal_pid_to_str (ptid
);
9344 else if (ptid_is_pid (ptid
))
9346 /* Printing an inferior target id. */
9348 /* When multi-process extensions are off, there's no way in the
9349 remote protocol to know the remote process id, if there's any
9350 at all. There's one exception --- when we're connected with
9351 target extended-remote, and we manually attached to a process
9352 with "attach PID". We don't record anywhere a flag that
9353 allows us to distinguish that case from the case of
9354 connecting with extended-remote and the stub already being
9355 attached to a process, and reporting yes to qAttached, hence
9356 no smart special casing here. */
9357 if (!remote_multi_process_p (rs
))
9359 xsnprintf (buf
, sizeof buf
, "Remote target");
9363 return normal_pid_to_str (ptid
);
9367 if (ptid_equal (magic_null_ptid
, ptid
))
9368 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9369 else if (rs
->extended
&& remote_multi_process_p (rs
))
9370 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9371 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9373 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9374 ptid_get_tid (ptid
));
9379 /* Get the address of the thread local variable in OBJFILE which is
9380 stored at OFFSET within the thread local storage for thread PTID. */
9383 remote_get_thread_local_address (struct target_ops
*ops
,
9384 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9386 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9388 struct remote_state
*rs
= get_remote_state ();
9390 char *endp
= rs
->buf
+ get_remote_packet_size ();
9391 enum packet_result result
;
9393 strcpy (p
, "qGetTLSAddr:");
9395 p
= write_ptid (p
, endp
, ptid
);
9397 p
+= hexnumstr (p
, offset
);
9399 p
+= hexnumstr (p
, lm
);
9403 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9404 result
= packet_ok (rs
->buf
,
9405 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9406 if (result
== PACKET_OK
)
9410 unpack_varlen_hex (rs
->buf
, &result
);
9413 else if (result
== PACKET_UNKNOWN
)
9414 throw_error (TLS_GENERIC_ERROR
,
9415 _("Remote target doesn't support qGetTLSAddr packet"));
9417 throw_error (TLS_GENERIC_ERROR
,
9418 _("Remote target failed to process qGetTLSAddr request"));
9421 throw_error (TLS_GENERIC_ERROR
,
9422 _("TLS not supported or disabled on this target"));
9427 /* Provide thread local base, i.e. Thread Information Block address.
9428 Returns 1 if ptid is found and thread_local_base is non zero. */
9431 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9433 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9435 struct remote_state
*rs
= get_remote_state ();
9437 char *endp
= rs
->buf
+ get_remote_packet_size ();
9438 enum packet_result result
;
9440 strcpy (p
, "qGetTIBAddr:");
9442 p
= write_ptid (p
, endp
, ptid
);
9446 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9447 result
= packet_ok (rs
->buf
,
9448 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9449 if (result
== PACKET_OK
)
9453 unpack_varlen_hex (rs
->buf
, &result
);
9455 *addr
= (CORE_ADDR
) result
;
9458 else if (result
== PACKET_UNKNOWN
)
9459 error (_("Remote target doesn't support qGetTIBAddr packet"));
9461 error (_("Remote target failed to process qGetTIBAddr request"));
9464 error (_("qGetTIBAddr not supported or disabled on this target"));
9469 /* Support for inferring a target description based on the current
9470 architecture and the size of a 'g' packet. While the 'g' packet
9471 can have any size (since optional registers can be left off the
9472 end), some sizes are easily recognizable given knowledge of the
9473 approximate architecture. */
9475 struct remote_g_packet_guess
9478 const struct target_desc
*tdesc
;
9480 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9481 DEF_VEC_O(remote_g_packet_guess_s
);
9483 struct remote_g_packet_data
9485 VEC(remote_g_packet_guess_s
) *guesses
;
9488 static struct gdbarch_data
*remote_g_packet_data_handle
;
9491 remote_g_packet_data_init (struct obstack
*obstack
)
9493 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9497 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9498 const struct target_desc
*tdesc
)
9500 struct remote_g_packet_data
*data
9501 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9502 struct remote_g_packet_guess new_guess
, *guess
;
9505 gdb_assert (tdesc
!= NULL
);
9508 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9510 if (guess
->bytes
== bytes
)
9511 internal_error (__FILE__
, __LINE__
,
9512 _("Duplicate g packet description added for size %d"),
9515 new_guess
.bytes
= bytes
;
9516 new_guess
.tdesc
= tdesc
;
9517 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9520 /* Return 1 if remote_read_description would do anything on this target
9521 and architecture, 0 otherwise. */
9524 remote_read_description_p (struct target_ops
*target
)
9526 struct remote_g_packet_data
*data
9527 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9529 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9535 static const struct target_desc
*
9536 remote_read_description (struct target_ops
*target
)
9538 struct remote_g_packet_data
*data
9539 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9541 /* Do not try this during initial connection, when we do not know
9542 whether there is a running but stopped thread. */
9543 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9546 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9548 struct remote_g_packet_guess
*guess
;
9550 int bytes
= send_g_packet ();
9553 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9555 if (guess
->bytes
== bytes
)
9556 return guess
->tdesc
;
9558 /* We discard the g packet. A minor optimization would be to
9559 hold on to it, and fill the register cache once we have selected
9560 an architecture, but it's too tricky to do safely. */
9566 /* Remote file transfer support. This is host-initiated I/O, not
9567 target-initiated; for target-initiated, see remote-fileio.c. */
9569 /* If *LEFT is at least the length of STRING, copy STRING to
9570 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9571 decrease *LEFT. Otherwise raise an error. */
9574 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9576 int len
= strlen (string
);
9579 error (_("Packet too long for target."));
9581 memcpy (*buffer
, string
, len
);
9585 /* NUL-terminate the buffer as a convenience, if there is
9591 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9592 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9593 decrease *LEFT. Otherwise raise an error. */
9596 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9599 if (2 * len
> *left
)
9600 error (_("Packet too long for target."));
9602 bin2hex (bytes
, *buffer
, len
);
9606 /* NUL-terminate the buffer as a convenience, if there is
9612 /* If *LEFT is large enough, convert VALUE to hex and add it to
9613 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9614 decrease *LEFT. Otherwise raise an error. */
9617 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9619 int len
= hexnumlen (value
);
9622 error (_("Packet too long for target."));
9624 hexnumstr (*buffer
, value
);
9628 /* NUL-terminate the buffer as a convenience, if there is
9634 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9635 value, *REMOTE_ERRNO to the remote error number or zero if none
9636 was included, and *ATTACHMENT to point to the start of the annex
9637 if any. The length of the packet isn't needed here; there may
9638 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9640 Return 0 if the packet could be parsed, -1 if it could not. If
9641 -1 is returned, the other variables may not be initialized. */
9644 remote_hostio_parse_result (char *buffer
, int *retcode
,
9645 int *remote_errno
, char **attachment
)
9652 if (buffer
[0] != 'F')
9656 *retcode
= strtol (&buffer
[1], &p
, 16);
9657 if (errno
!= 0 || p
== &buffer
[1])
9660 /* Check for ",errno". */
9664 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9665 if (errno
!= 0 || p
+ 1 == p2
)
9670 /* Check for ";attachment". If there is no attachment, the
9671 packet should end here. */
9674 *attachment
= p
+ 1;
9677 else if (*p
== '\0')
9683 /* Send a prepared I/O packet to the target and read its response.
9684 The prepared packet is in the global RS->BUF before this function
9685 is called, and the answer is there when we return.
9687 COMMAND_BYTES is the length of the request to send, which may include
9688 binary data. WHICH_PACKET is the packet configuration to check
9689 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9690 is set to the error number and -1 is returned. Otherwise the value
9691 returned by the function is returned.
9693 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9694 attachment is expected; an error will be reported if there's a
9695 mismatch. If one is found, *ATTACHMENT will be set to point into
9696 the packet buffer and *ATTACHMENT_LEN will be set to the
9697 attachment's length. */
9700 remote_hostio_send_command (int command_bytes
, int which_packet
,
9701 int *remote_errno
, char **attachment
,
9702 int *attachment_len
)
9704 struct remote_state
*rs
= get_remote_state ();
9705 int ret
, bytes_read
;
9706 char *attachment_tmp
;
9709 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9711 *remote_errno
= FILEIO_ENOSYS
;
9715 putpkt_binary (rs
->buf
, command_bytes
);
9716 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9718 /* If it timed out, something is wrong. Don't try to parse the
9722 *remote_errno
= FILEIO_EINVAL
;
9726 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9729 *remote_errno
= FILEIO_EINVAL
;
9731 case PACKET_UNKNOWN
:
9732 *remote_errno
= FILEIO_ENOSYS
;
9738 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9741 *remote_errno
= FILEIO_EINVAL
;
9745 /* Make sure we saw an attachment if and only if we expected one. */
9746 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9747 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9749 *remote_errno
= FILEIO_EINVAL
;
9753 /* If an attachment was found, it must point into the packet buffer;
9754 work out how many bytes there were. */
9755 if (attachment_tmp
!= NULL
)
9757 *attachment
= attachment_tmp
;
9758 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9764 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9765 remote file descriptor, or -1 if an error occurs (and set
9769 remote_hostio_open (const char *filename
, int flags
, int mode
,
9772 struct remote_state
*rs
= get_remote_state ();
9774 int left
= get_remote_packet_size () - 1;
9776 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9778 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9780 remote_buffer_add_string (&p
, &left
, ",");
9782 remote_buffer_add_int (&p
, &left
, flags
);
9783 remote_buffer_add_string (&p
, &left
, ",");
9785 remote_buffer_add_int (&p
, &left
, mode
);
9787 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9788 remote_errno
, NULL
, NULL
);
9791 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9792 Return the number of bytes written, or -1 if an error occurs (and
9793 set *REMOTE_ERRNO). */
9796 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9797 ULONGEST offset
, int *remote_errno
)
9799 struct remote_state
*rs
= get_remote_state ();
9801 int left
= get_remote_packet_size ();
9804 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9806 remote_buffer_add_int (&p
, &left
, fd
);
9807 remote_buffer_add_string (&p
, &left
, ",");
9809 remote_buffer_add_int (&p
, &left
, offset
);
9810 remote_buffer_add_string (&p
, &left
, ",");
9812 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9813 get_remote_packet_size () - (p
- rs
->buf
));
9815 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9816 remote_errno
, NULL
, NULL
);
9819 /* Read up to LEN bytes FD on the remote target into READ_BUF
9820 Return the number of bytes read, or -1 if an error occurs (and
9821 set *REMOTE_ERRNO). */
9824 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9825 ULONGEST offset
, int *remote_errno
)
9827 struct remote_state
*rs
= get_remote_state ();
9830 int left
= get_remote_packet_size ();
9831 int ret
, attachment_len
;
9834 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9836 remote_buffer_add_int (&p
, &left
, fd
);
9837 remote_buffer_add_string (&p
, &left
, ",");
9839 remote_buffer_add_int (&p
, &left
, len
);
9840 remote_buffer_add_string (&p
, &left
, ",");
9842 remote_buffer_add_int (&p
, &left
, offset
);
9844 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9845 remote_errno
, &attachment
,
9851 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9853 if (read_len
!= ret
)
9854 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9859 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9860 (and set *REMOTE_ERRNO). */
9863 remote_hostio_close (int fd
, int *remote_errno
)
9865 struct remote_state
*rs
= get_remote_state ();
9867 int left
= get_remote_packet_size () - 1;
9869 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9871 remote_buffer_add_int (&p
, &left
, fd
);
9873 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9874 remote_errno
, NULL
, NULL
);
9877 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9878 occurs (and set *REMOTE_ERRNO). */
9881 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9883 struct remote_state
*rs
= get_remote_state ();
9885 int left
= get_remote_packet_size () - 1;
9887 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9889 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9892 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9893 remote_errno
, NULL
, NULL
);
9896 /* Read value of symbolic link FILENAME on the remote target. Return
9897 a null-terminated string allocated via xmalloc, or NULL if an error
9898 occurs (and set *REMOTE_ERRNO). */
9901 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9903 struct remote_state
*rs
= get_remote_state ();
9906 int left
= get_remote_packet_size ();
9907 int len
, attachment_len
;
9911 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9913 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9916 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9917 remote_errno
, &attachment
,
9923 ret
= xmalloc (len
+ 1);
9925 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9926 (gdb_byte
*) ret
, len
);
9927 if (read_len
!= len
)
9928 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9935 remote_fileio_errno_to_host (int errnum
)
9959 case FILEIO_ENOTDIR
:
9979 case FILEIO_ENAMETOOLONG
:
9980 return ENAMETOOLONG
;
9986 remote_hostio_error (int errnum
)
9988 int host_error
= remote_fileio_errno_to_host (errnum
);
9990 if (host_error
== -1)
9991 error (_("Unknown remote I/O error %d"), errnum
);
9993 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9997 remote_hostio_close_cleanup (void *opaque
)
9999 int fd
= *(int *) opaque
;
10002 remote_hostio_close (fd
, &remote_errno
);
10007 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10009 const char *filename
= bfd_get_filename (abfd
);
10010 int fd
, remote_errno
;
10013 gdb_assert (remote_filename_p (filename
));
10015 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10018 errno
= remote_fileio_errno_to_host (remote_errno
);
10019 bfd_set_error (bfd_error_system_call
);
10023 stream
= xmalloc (sizeof (int));
10029 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10031 int fd
= *(int *)stream
;
10036 /* Ignore errors on close; these may happen if the remote
10037 connection was already torn down. */
10038 remote_hostio_close (fd
, &remote_errno
);
10040 /* Zero means success. */
10045 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10046 file_ptr nbytes
, file_ptr offset
)
10048 int fd
= *(int *)stream
;
10050 file_ptr pos
, bytes
;
10053 while (nbytes
> pos
)
10055 bytes
= remote_hostio_pread (fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10056 offset
+ pos
, &remote_errno
);
10058 /* Success, but no bytes, means end-of-file. */
10062 errno
= remote_fileio_errno_to_host (remote_errno
);
10063 bfd_set_error (bfd_error_system_call
);
10074 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10076 /* FIXME: We should probably implement remote_hostio_stat. */
10077 sb
->st_size
= INT_MAX
;
10082 remote_filename_p (const char *filename
)
10084 return strncmp (filename
, "remote:", 7) == 0;
10088 remote_bfd_open (const char *remote_file
, const char *target
)
10090 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10091 remote_bfd_iovec_open
, NULL
,
10092 remote_bfd_iovec_pread
,
10093 remote_bfd_iovec_close
,
10094 remote_bfd_iovec_stat
);
10100 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10102 struct cleanup
*back_to
, *close_cleanup
;
10103 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10106 int bytes_in_buffer
;
10111 error (_("command can only be used with remote target"));
10113 file
= gdb_fopen_cloexec (local_file
, "rb");
10115 perror_with_name (local_file
);
10116 back_to
= make_cleanup_fclose (file
);
10118 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10120 0700, &remote_errno
);
10122 remote_hostio_error (remote_errno
);
10124 /* Send up to this many bytes at once. They won't all fit in the
10125 remote packet limit, so we'll transfer slightly fewer. */
10126 io_size
= get_remote_packet_size ();
10127 buffer
= xmalloc (io_size
);
10128 make_cleanup (xfree
, buffer
);
10130 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10132 bytes_in_buffer
= 0;
10135 while (bytes_in_buffer
|| !saw_eof
)
10139 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10140 io_size
- bytes_in_buffer
,
10145 error (_("Error reading %s."), local_file
);
10148 /* EOF. Unless there is something still in the
10149 buffer from the last iteration, we are done. */
10151 if (bytes_in_buffer
== 0)
10159 bytes
+= bytes_in_buffer
;
10160 bytes_in_buffer
= 0;
10162 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10163 offset
, &remote_errno
);
10166 remote_hostio_error (remote_errno
);
10167 else if (retcode
== 0)
10168 error (_("Remote write of %d bytes returned 0!"), bytes
);
10169 else if (retcode
< bytes
)
10171 /* Short write. Save the rest of the read data for the next
10173 bytes_in_buffer
= bytes
- retcode
;
10174 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10180 discard_cleanups (close_cleanup
);
10181 if (remote_hostio_close (fd
, &remote_errno
))
10182 remote_hostio_error (remote_errno
);
10185 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10186 do_cleanups (back_to
);
10190 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10192 struct cleanup
*back_to
, *close_cleanup
;
10193 int fd
, remote_errno
, bytes
, io_size
;
10199 error (_("command can only be used with remote target"));
10201 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10203 remote_hostio_error (remote_errno
);
10205 file
= gdb_fopen_cloexec (local_file
, "wb");
10207 perror_with_name (local_file
);
10208 back_to
= make_cleanup_fclose (file
);
10210 /* Send up to this many bytes at once. They won't all fit in the
10211 remote packet limit, so we'll transfer slightly fewer. */
10212 io_size
= get_remote_packet_size ();
10213 buffer
= xmalloc (io_size
);
10214 make_cleanup (xfree
, buffer
);
10216 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10221 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10223 /* Success, but no bytes, means end-of-file. */
10226 remote_hostio_error (remote_errno
);
10230 bytes
= fwrite (buffer
, 1, bytes
, file
);
10232 perror_with_name (local_file
);
10235 discard_cleanups (close_cleanup
);
10236 if (remote_hostio_close (fd
, &remote_errno
))
10237 remote_hostio_error (remote_errno
);
10240 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10241 do_cleanups (back_to
);
10245 remote_file_delete (const char *remote_file
, int from_tty
)
10247 int retcode
, remote_errno
;
10250 error (_("command can only be used with remote target"));
10252 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10254 remote_hostio_error (remote_errno
);
10257 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10261 remote_put_command (char *args
, int from_tty
)
10263 struct cleanup
*back_to
;
10267 error_no_arg (_("file to put"));
10269 argv
= gdb_buildargv (args
);
10270 back_to
= make_cleanup_freeargv (argv
);
10271 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10272 error (_("Invalid parameters to remote put"));
10274 remote_file_put (argv
[0], argv
[1], from_tty
);
10276 do_cleanups (back_to
);
10280 remote_get_command (char *args
, int from_tty
)
10282 struct cleanup
*back_to
;
10286 error_no_arg (_("file to get"));
10288 argv
= gdb_buildargv (args
);
10289 back_to
= make_cleanup_freeargv (argv
);
10290 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10291 error (_("Invalid parameters to remote get"));
10293 remote_file_get (argv
[0], argv
[1], from_tty
);
10295 do_cleanups (back_to
);
10299 remote_delete_command (char *args
, int from_tty
)
10301 struct cleanup
*back_to
;
10305 error_no_arg (_("file to delete"));
10307 argv
= gdb_buildargv (args
);
10308 back_to
= make_cleanup_freeargv (argv
);
10309 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10310 error (_("Invalid parameters to remote delete"));
10312 remote_file_delete (argv
[0], from_tty
);
10314 do_cleanups (back_to
);
10318 remote_command (char *args
, int from_tty
)
10320 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10324 remote_can_execute_reverse (void)
10326 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10327 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10334 remote_supports_non_stop (void)
10340 remote_supports_disable_randomization (void)
10342 /* Only supported in extended mode. */
10347 remote_supports_multi_process (void)
10349 struct remote_state
*rs
= get_remote_state ();
10351 /* Only extended-remote handles being attached to multiple
10352 processes, even though plain remote can use the multi-process
10353 thread id extensions, so that GDB knows the target process's
10355 return rs
->extended
&& remote_multi_process_p (rs
);
10359 remote_supports_cond_tracepoints (void)
10361 struct remote_state
*rs
= get_remote_state ();
10363 return rs
->cond_tracepoints
;
10367 remote_supports_cond_breakpoints (void)
10369 struct remote_state
*rs
= get_remote_state ();
10371 return rs
->cond_breakpoints
;
10375 remote_supports_fast_tracepoints (void)
10377 struct remote_state
*rs
= get_remote_state ();
10379 return rs
->fast_tracepoints
;
10383 remote_supports_static_tracepoints (void)
10385 struct remote_state
*rs
= get_remote_state ();
10387 return rs
->static_tracepoints
;
10391 remote_supports_install_in_trace (void)
10393 struct remote_state
*rs
= get_remote_state ();
10395 return rs
->install_in_trace
;
10399 remote_supports_enable_disable_tracepoint (void)
10401 struct remote_state
*rs
= get_remote_state ();
10403 return rs
->enable_disable_tracepoints
;
10407 remote_supports_string_tracing (void)
10409 struct remote_state
*rs
= get_remote_state ();
10411 return rs
->string_tracing
;
10415 remote_can_run_breakpoint_commands (void)
10417 struct remote_state
*rs
= get_remote_state ();
10419 return rs
->breakpoint_commands
;
10423 remote_trace_init (void)
10426 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10427 if (strcmp (target_buf
, "OK") != 0)
10428 error (_("Target does not support this command."));
10431 static void free_actions_list (char **actions_list
);
10432 static void free_actions_list_cleanup_wrapper (void *);
10434 free_actions_list_cleanup_wrapper (void *al
)
10436 free_actions_list (al
);
10440 free_actions_list (char **actions_list
)
10444 if (actions_list
== 0)
10447 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10448 xfree (actions_list
[ndx
]);
10450 xfree (actions_list
);
10453 /* Recursive routine to walk through command list including loops, and
10454 download packets for each command. */
10457 remote_download_command_source (int num
, ULONGEST addr
,
10458 struct command_line
*cmds
)
10460 struct remote_state
*rs
= get_remote_state ();
10461 struct command_line
*cmd
;
10463 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10465 QUIT
; /* Allow user to bail out with ^C. */
10466 strcpy (rs
->buf
, "QTDPsrc:");
10467 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10468 rs
->buf
+ strlen (rs
->buf
),
10469 rs
->buf_size
- strlen (rs
->buf
));
10471 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10472 if (strcmp (target_buf
, "OK"))
10473 warning (_("Target does not support source download."));
10475 if (cmd
->control_type
== while_control
10476 || cmd
->control_type
== while_stepping_control
)
10478 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10480 QUIT
; /* Allow user to bail out with ^C. */
10481 strcpy (rs
->buf
, "QTDPsrc:");
10482 encode_source_string (num
, addr
, "cmd", "end",
10483 rs
->buf
+ strlen (rs
->buf
),
10484 rs
->buf_size
- strlen (rs
->buf
));
10486 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10487 if (strcmp (target_buf
, "OK"))
10488 warning (_("Target does not support source download."));
10494 remote_download_tracepoint (struct bp_location
*loc
)
10496 #define BUF_SIZE 2048
10500 char buf
[BUF_SIZE
];
10501 char **tdp_actions
;
10502 char **stepping_actions
;
10504 struct cleanup
*old_chain
= NULL
;
10505 struct agent_expr
*aexpr
;
10506 struct cleanup
*aexpr_chain
= NULL
;
10508 struct breakpoint
*b
= loc
->owner
;
10509 struct tracepoint
*t
= (struct tracepoint
*) b
;
10511 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10512 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10514 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10517 tpaddr
= loc
->address
;
10518 sprintf_vma (addrbuf
, tpaddr
);
10519 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10520 addrbuf
, /* address */
10521 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10522 t
->step_count
, t
->pass_count
);
10523 /* Fast tracepoints are mostly handled by the target, but we can
10524 tell the target how big of an instruction block should be moved
10526 if (b
->type
== bp_fast_tracepoint
)
10528 /* Only test for support at download time; we may not know
10529 target capabilities at definition time. */
10530 if (remote_supports_fast_tracepoints ())
10534 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10535 tpaddr
, &isize
, NULL
))
10536 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10539 /* If it passed validation at definition but fails now,
10540 something is very wrong. */
10541 internal_error (__FILE__
, __LINE__
,
10542 _("Fast tracepoint not "
10543 "valid during download"));
10546 /* Fast tracepoints are functionally identical to regular
10547 tracepoints, so don't take lack of support as a reason to
10548 give up on the trace run. */
10549 warning (_("Target does not support fast tracepoints, "
10550 "downloading %d as regular tracepoint"), b
->number
);
10552 else if (b
->type
== bp_static_tracepoint
)
10554 /* Only test for support at download time; we may not know
10555 target capabilities at definition time. */
10556 if (remote_supports_static_tracepoints ())
10558 struct static_tracepoint_marker marker
;
10560 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10561 strcat (buf
, ":S");
10563 error (_("Static tracepoint not valid during download"));
10566 /* Fast tracepoints are functionally identical to regular
10567 tracepoints, so don't take lack of support as a reason
10568 to give up on the trace run. */
10569 error (_("Target does not support static tracepoints"));
10571 /* If the tracepoint has a conditional, make it into an agent
10572 expression and append to the definition. */
10575 /* Only test support at download time, we may not know target
10576 capabilities at definition time. */
10577 if (remote_supports_cond_tracepoints ())
10579 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10580 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10581 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10583 pkt
= buf
+ strlen (buf
);
10584 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10585 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10587 do_cleanups (aexpr_chain
);
10590 warning (_("Target does not support conditional tracepoints, "
10591 "ignoring tp %d cond"), b
->number
);
10594 if (b
->commands
|| *default_collect
)
10597 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10598 if (strcmp (target_buf
, "OK"))
10599 error (_("Target does not support tracepoints."));
10601 /* do_single_steps (t); */
10604 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10606 QUIT
; /* Allow user to bail out with ^C. */
10607 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10608 b
->number
, addrbuf
, /* address */
10610 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10613 remote_get_noisy_reply (&target_buf
,
10615 if (strcmp (target_buf
, "OK"))
10616 error (_("Error on target while setting tracepoints."));
10619 if (stepping_actions
)
10621 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10623 QUIT
; /* Allow user to bail out with ^C. */
10624 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10625 b
->number
, addrbuf
, /* address */
10626 ((ndx
== 0) ? "S" : ""),
10627 stepping_actions
[ndx
],
10628 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10630 remote_get_noisy_reply (&target_buf
,
10632 if (strcmp (target_buf
, "OK"))
10633 error (_("Error on target while setting tracepoints."));
10637 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10640 if (b
->addr_string
)
10642 strcpy (buf
, "QTDPsrc:");
10643 encode_source_string (b
->number
, loc
->address
,
10644 "at", b
->addr_string
, buf
+ strlen (buf
),
10645 2048 - strlen (buf
));
10648 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10649 if (strcmp (target_buf
, "OK"))
10650 warning (_("Target does not support source download."));
10652 if (b
->cond_string
)
10654 strcpy (buf
, "QTDPsrc:");
10655 encode_source_string (b
->number
, loc
->address
,
10656 "cond", b
->cond_string
, buf
+ strlen (buf
),
10657 2048 - strlen (buf
));
10659 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10660 if (strcmp (target_buf
, "OK"))
10661 warning (_("Target does not support source download."));
10663 remote_download_command_source (b
->number
, loc
->address
,
10664 breakpoint_commands (b
));
10667 do_cleanups (old_chain
);
10671 remote_can_download_tracepoint (void)
10673 struct remote_state
*rs
= get_remote_state ();
10674 struct trace_status
*ts
;
10677 /* Don't try to install tracepoints until we've relocated our
10678 symbols, and fetched and merged the target's tracepoint list with
10680 if (rs
->starting_up
)
10683 ts
= current_trace_status ();
10684 status
= remote_get_trace_status (ts
);
10686 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10689 /* If we are in a tracing experiment, but remote stub doesn't support
10690 installing tracepoint in trace, we have to return. */
10691 if (!remote_supports_install_in_trace ())
10699 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10701 struct remote_state
*rs
= get_remote_state ();
10704 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10705 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10707 p
= rs
->buf
+ strlen (rs
->buf
);
10708 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10709 error (_("Trace state variable name too long for tsv definition packet"));
10710 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10713 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10714 if (*target_buf
== '\0')
10715 error (_("Target does not support this command."));
10716 if (strcmp (target_buf
, "OK") != 0)
10717 error (_("Error on target while downloading trace state variable."));
10721 remote_enable_tracepoint (struct bp_location
*location
)
10723 struct remote_state
*rs
= get_remote_state ();
10726 sprintf_vma (addr_buf
, location
->address
);
10727 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10728 location
->owner
->number
, addr_buf
);
10730 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10731 if (*rs
->buf
== '\0')
10732 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10733 if (strcmp (rs
->buf
, "OK") != 0)
10734 error (_("Error on target while enabling tracepoint."));
10738 remote_disable_tracepoint (struct bp_location
*location
)
10740 struct remote_state
*rs
= get_remote_state ();
10743 sprintf_vma (addr_buf
, location
->address
);
10744 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10745 location
->owner
->number
, addr_buf
);
10747 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10748 if (*rs
->buf
== '\0')
10749 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10750 if (strcmp (rs
->buf
, "OK") != 0)
10751 error (_("Error on target while disabling tracepoint."));
10755 remote_trace_set_readonly_regions (void)
10759 bfd_size_type size
;
10765 return; /* No information to give. */
10767 strcpy (target_buf
, "QTro");
10768 offset
= strlen (target_buf
);
10769 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10771 char tmp1
[40], tmp2
[40];
10774 if ((s
->flags
& SEC_LOAD
) == 0 ||
10775 /* (s->flags & SEC_CODE) == 0 || */
10776 (s
->flags
& SEC_READONLY
) == 0)
10780 vma
= bfd_get_section_vma (abfd
, s
);
10781 size
= bfd_get_section_size (s
);
10782 sprintf_vma (tmp1
, vma
);
10783 sprintf_vma (tmp2
, vma
+ size
);
10784 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10785 if (offset
+ sec_length
+ 1 > target_buf_size
)
10787 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10790 Too many sections for read-only sections definition packet."));
10793 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10795 offset
+= sec_length
;
10799 putpkt (target_buf
);
10800 getpkt (&target_buf
, &target_buf_size
, 0);
10805 remote_trace_start (void)
10807 putpkt ("QTStart");
10808 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10809 if (*target_buf
== '\0')
10810 error (_("Target does not support this command."));
10811 if (strcmp (target_buf
, "OK") != 0)
10812 error (_("Bogus reply from target: %s"), target_buf
);
10816 remote_get_trace_status (struct trace_status
*ts
)
10818 /* Initialize it just to avoid a GCC false warning. */
10820 /* FIXME we need to get register block size some other way. */
10821 extern int trace_regblock_size
;
10822 volatile struct gdb_exception ex
;
10823 enum packet_result result
;
10825 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10828 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10830 putpkt ("qTStatus");
10832 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10834 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10838 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10840 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10843 throw_exception (ex
);
10846 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10848 /* If the remote target doesn't do tracing, flag it. */
10849 if (result
== PACKET_UNKNOWN
)
10852 /* We're working with a live target. */
10853 ts
->filename
= NULL
;
10856 error (_("Bogus trace status reply from target: %s"), target_buf
);
10858 /* Function 'parse_trace_status' sets default value of each field of
10859 'ts' at first, so we don't have to do it here. */
10860 parse_trace_status (p
, ts
);
10862 return ts
->running
;
10866 remote_get_tracepoint_status (struct breakpoint
*bp
,
10867 struct uploaded_tp
*utp
)
10869 struct remote_state
*rs
= get_remote_state ();
10871 struct bp_location
*loc
;
10872 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10873 size_t size
= get_remote_packet_size ();
10877 tp
->base
.hit_count
= 0;
10878 tp
->traceframe_usage
= 0;
10879 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10881 /* If the tracepoint was never downloaded, don't go asking for
10883 if (tp
->number_on_target
== 0)
10885 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10886 phex_nz (loc
->address
, 0));
10888 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10889 if (reply
&& *reply
)
10892 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10898 utp
->hit_count
= 0;
10899 utp
->traceframe_usage
= 0;
10900 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10901 phex_nz (utp
->addr
, 0));
10903 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10904 if (reply
&& *reply
)
10907 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10913 remote_trace_stop (void)
10916 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10917 if (*target_buf
== '\0')
10918 error (_("Target does not support this command."));
10919 if (strcmp (target_buf
, "OK") != 0)
10920 error (_("Bogus reply from target: %s"), target_buf
);
10924 remote_trace_find (enum trace_find_type type
, int num
,
10925 CORE_ADDR addr1
, CORE_ADDR addr2
,
10928 struct remote_state
*rs
= get_remote_state ();
10929 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10931 int target_frameno
= -1, target_tracept
= -1;
10933 /* Lookups other than by absolute frame number depend on the current
10934 trace selected, so make sure it is correct on the remote end
10936 if (type
!= tfind_number
)
10937 set_remote_traceframe ();
10940 strcpy (p
, "QTFrame:");
10941 p
= strchr (p
, '\0');
10945 xsnprintf (p
, endbuf
- p
, "%x", num
);
10948 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10951 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10954 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10955 phex_nz (addr2
, 0));
10957 case tfind_outside
:
10958 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10959 phex_nz (addr2
, 0));
10962 error (_("Unknown trace find type %d"), type
);
10966 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10967 if (*reply
== '\0')
10968 error (_("Target does not support this command."));
10970 while (reply
&& *reply
)
10975 target_frameno
= (int) strtol (p
, &reply
, 16);
10977 error (_("Unable to parse trace frame number"));
10978 /* Don't update our remote traceframe number cache on failure
10979 to select a remote traceframe. */
10980 if (target_frameno
== -1)
10985 target_tracept
= (int) strtol (p
, &reply
, 16);
10987 error (_("Unable to parse tracepoint number"));
10989 case 'O': /* "OK"? */
10990 if (reply
[1] == 'K' && reply
[2] == '\0')
10993 error (_("Bogus reply from target: %s"), reply
);
10996 error (_("Bogus reply from target: %s"), reply
);
10999 *tpp
= target_tracept
;
11001 remote_traceframe_number
= target_frameno
;
11002 return target_frameno
;
11006 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
11008 struct remote_state
*rs
= get_remote_state ();
11012 set_remote_traceframe ();
11014 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11016 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11017 if (reply
&& *reply
)
11021 unpack_varlen_hex (reply
+ 1, &uval
);
11022 *val
= (LONGEST
) uval
;
11030 remote_save_trace_data (const char *filename
)
11032 struct remote_state
*rs
= get_remote_state ();
11036 strcpy (p
, "QTSave:");
11038 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11039 error (_("Remote file name too long for trace save packet"));
11040 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
11043 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11044 if (*reply
== '\0')
11045 error (_("Target does not support this command."));
11046 if (strcmp (reply
, "OK") != 0)
11047 error (_("Bogus reply from target: %s"), reply
);
11051 /* This is basically a memory transfer, but needs to be its own packet
11052 because we don't know how the target actually organizes its trace
11053 memory, plus we want to be able to ask for as much as possible, but
11054 not be unhappy if we don't get as much as we ask for. */
11057 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11059 struct remote_state
*rs
= get_remote_state ();
11065 strcpy (p
, "qTBuffer:");
11067 p
+= hexnumstr (p
, offset
);
11069 p
+= hexnumstr (p
, len
);
11073 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11074 if (reply
&& *reply
)
11076 /* 'l' by itself means we're at the end of the buffer and
11077 there is nothing more to get. */
11081 /* Convert the reply into binary. Limit the number of bytes to
11082 convert according to our passed-in buffer size, rather than
11083 what was returned in the packet; if the target is
11084 unexpectedly generous and gives us a bigger reply than we
11085 asked for, we don't want to crash. */
11086 rslt
= hex2bin (target_buf
, buf
, len
);
11090 /* Something went wrong, flag as an error. */
11095 remote_set_disconnected_tracing (int val
)
11097 struct remote_state
*rs
= get_remote_state ();
11099 if (rs
->disconnected_tracing
)
11103 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11105 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11106 if (*reply
== '\0')
11107 error (_("Target does not support this command."));
11108 if (strcmp (reply
, "OK") != 0)
11109 error (_("Bogus reply from target: %s"), reply
);
11112 warning (_("Target does not support disconnected tracing."));
11116 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11118 struct thread_info
*info
= find_thread_ptid (ptid
);
11120 if (info
&& info
->private)
11121 return info
->private->core
;
11126 remote_set_circular_trace_buffer (int val
)
11128 struct remote_state
*rs
= get_remote_state ();
11131 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11133 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11134 if (*reply
== '\0')
11135 error (_("Target does not support this command."));
11136 if (strcmp (reply
, "OK") != 0)
11137 error (_("Bogus reply from target: %s"), reply
);
11140 static struct traceframe_info
*
11141 remote_traceframe_info (void)
11145 text
= target_read_stralloc (¤t_target
,
11146 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11149 struct traceframe_info
*info
;
11150 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11152 info
= parse_traceframe_info (text
);
11153 do_cleanups (back_to
);
11160 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11161 instruction on which a fast tracepoint may be placed. Returns -1
11162 if the packet is not supported, and 0 if the minimum instruction
11163 length is unknown. */
11166 remote_get_min_fast_tracepoint_insn_len (void)
11168 struct remote_state
*rs
= get_remote_state ();
11171 /* If we're not debugging a process yet, the IPA can't be
11173 if (!target_has_execution
)
11176 /* Make sure the remote is pointing at the right process. */
11177 set_general_process ();
11179 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11181 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11182 if (*reply
== '\0')
11186 ULONGEST min_insn_len
;
11188 unpack_varlen_hex (reply
, &min_insn_len
);
11190 return (int) min_insn_len
;
11195 remote_set_trace_buffer_size (LONGEST val
)
11197 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11200 struct remote_state
*rs
= get_remote_state ();
11201 char *buf
= rs
->buf
;
11202 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11203 enum packet_result result
;
11205 gdb_assert (val
>= 0 || val
== -1);
11206 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11207 /* Send -1 as literal "-1" to avoid host size dependency. */
11211 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11214 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11217 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11218 result
= packet_ok (rs
->buf
,
11219 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11221 if (result
!= PACKET_OK
)
11222 warning (_("Bogus reply from target: %s"), rs
->buf
);
11227 remote_set_trace_notes (const char *user
, const char *notes
,
11228 const char *stop_notes
)
11230 struct remote_state
*rs
= get_remote_state ();
11232 char *buf
= rs
->buf
;
11233 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11236 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11239 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11240 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, 0);
11246 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11247 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, 0);
11253 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11254 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, 0);
11258 /* Ensure the buffer is terminated. */
11262 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11263 if (*reply
== '\0')
11266 if (strcmp (reply
, "OK") != 0)
11267 error (_("Bogus reply from target: %s"), reply
);
11273 remote_use_agent (int use
)
11275 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11277 struct remote_state
*rs
= get_remote_state ();
11279 /* If the stub supports QAgent. */
11280 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11282 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11284 if (strcmp (rs
->buf
, "OK") == 0)
11295 remote_can_use_agent (void)
11297 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11300 struct btrace_target_info
11302 /* The ptid of the traced thread. */
11306 /* Check whether the target supports branch tracing. */
11309 remote_supports_btrace (void)
11311 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11313 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11315 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11321 /* Enable branch tracing. */
11323 static struct btrace_target_info
*
11324 remote_enable_btrace (ptid_t ptid
)
11326 struct btrace_target_info
*tinfo
= NULL
;
11327 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11328 struct remote_state
*rs
= get_remote_state ();
11329 char *buf
= rs
->buf
;
11330 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11332 if (packet
->support
!= PACKET_ENABLE
)
11333 error (_("Target does not support branch tracing."));
11335 set_general_thread (ptid
);
11337 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11339 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11341 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11343 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11344 error (_("Could not enable branch tracing for %s: %s"),
11345 target_pid_to_str (ptid
), rs
->buf
+ 2);
11347 error (_("Could not enable branch tracing for %s."),
11348 target_pid_to_str (ptid
));
11351 tinfo
= xzalloc (sizeof (*tinfo
));
11352 tinfo
->ptid
= ptid
;
11357 /* Disable branch tracing. */
11360 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11362 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11363 struct remote_state
*rs
= get_remote_state ();
11364 char *buf
= rs
->buf
;
11365 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11367 if (packet
->support
!= PACKET_ENABLE
)
11368 error (_("Target does not support branch tracing."));
11370 set_general_thread (tinfo
->ptid
);
11372 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11374 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11376 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11378 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11379 error (_("Could not disable branch tracing for %s: %s"),
11380 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11382 error (_("Could not disable branch tracing for %s."),
11383 target_pid_to_str (tinfo
->ptid
));
11389 /* Teardown branch tracing. */
11392 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11394 /* We must not talk to the target during teardown. */
11398 /* Read the branch trace. */
11400 static VEC (btrace_block_s
) *
11401 remote_read_btrace (struct btrace_target_info
*tinfo
,
11402 enum btrace_read_type type
)
11404 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11405 struct remote_state
*rs
= get_remote_state ();
11406 VEC (btrace_block_s
) *btrace
= NULL
;
11410 if (packet
->support
!= PACKET_ENABLE
)
11411 error (_("Target does not support branch tracing."));
11413 #if !defined(HAVE_LIBEXPAT)
11414 error (_("Cannot process branch tracing result. XML parsing not supported."));
11419 case btrace_read_all
:
11422 case btrace_read_new
:
11426 internal_error (__FILE__
, __LINE__
,
11427 _("Bad branch tracing read type: %u."),
11428 (unsigned int) type
);
11431 xml
= target_read_stralloc (¤t_target
,
11432 TARGET_OBJECT_BTRACE
, annex
);
11435 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11437 btrace
= parse_xml_btrace (xml
);
11438 do_cleanups (cleanup
);
11445 remote_augmented_libraries_svr4_read (void)
11447 struct remote_state
*rs
= get_remote_state ();
11449 return rs
->augmented_libraries_svr4_read
;
11453 init_remote_ops (void)
11455 remote_ops
.to_shortname
= "remote";
11456 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11457 remote_ops
.to_doc
=
11458 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11459 Specify the serial device it is connected to\n\
11460 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11461 remote_ops
.to_open
= remote_open
;
11462 remote_ops
.to_close
= remote_close
;
11463 remote_ops
.to_detach
= remote_detach
;
11464 remote_ops
.to_disconnect
= remote_disconnect
;
11465 remote_ops
.to_resume
= remote_resume
;
11466 remote_ops
.to_wait
= remote_wait
;
11467 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11468 remote_ops
.to_store_registers
= remote_store_registers
;
11469 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11470 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11471 remote_ops
.to_files_info
= remote_files_info
;
11472 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11473 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11474 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11475 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11476 remote_ops
.to_watchpoint_addr_within_range
=
11477 remote_watchpoint_addr_within_range
;
11478 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11479 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11480 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11481 remote_ops
.to_region_ok_for_hw_watchpoint
11482 = remote_region_ok_for_hw_watchpoint
;
11483 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11484 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11485 remote_ops
.to_kill
= remote_kill
;
11486 remote_ops
.to_load
= generic_load
;
11487 remote_ops
.to_mourn_inferior
= remote_mourn
;
11488 remote_ops
.to_pass_signals
= remote_pass_signals
;
11489 remote_ops
.to_program_signals
= remote_program_signals
;
11490 remote_ops
.to_thread_alive
= remote_thread_alive
;
11491 remote_ops
.to_find_new_threads
= remote_threads_info
;
11492 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11493 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11494 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11495 remote_ops
.to_stop
= remote_stop
;
11496 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11497 remote_ops
.to_rcmd
= remote_rcmd
;
11498 remote_ops
.to_log_command
= serial_log_command
;
11499 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11500 remote_ops
.to_stratum
= process_stratum
;
11501 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11502 remote_ops
.to_has_memory
= default_child_has_memory
;
11503 remote_ops
.to_has_stack
= default_child_has_stack
;
11504 remote_ops
.to_has_registers
= default_child_has_registers
;
11505 remote_ops
.to_has_execution
= default_child_has_execution
;
11506 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11507 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11508 remote_ops
.to_magic
= OPS_MAGIC
;
11509 remote_ops
.to_memory_map
= remote_memory_map
;
11510 remote_ops
.to_flash_erase
= remote_flash_erase
;
11511 remote_ops
.to_flash_done
= remote_flash_done
;
11512 remote_ops
.to_read_description
= remote_read_description
;
11513 remote_ops
.to_search_memory
= remote_search_memory
;
11514 remote_ops
.to_can_async_p
= remote_can_async_p
;
11515 remote_ops
.to_is_async_p
= remote_is_async_p
;
11516 remote_ops
.to_async
= remote_async
;
11517 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11518 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11519 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11520 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11521 remote_ops
.to_supports_disable_randomization
11522 = remote_supports_disable_randomization
;
11523 remote_ops
.to_fileio_open
= remote_hostio_open
;
11524 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11525 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11526 remote_ops
.to_fileio_close
= remote_hostio_close
;
11527 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11528 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11529 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11530 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11531 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11532 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11533 remote_ops
.to_trace_init
= remote_trace_init
;
11534 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11535 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11536 remote_ops
.to_download_trace_state_variable
11537 = remote_download_trace_state_variable
;
11538 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11539 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11540 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11541 remote_ops
.to_trace_start
= remote_trace_start
;
11542 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11543 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11544 remote_ops
.to_trace_stop
= remote_trace_stop
;
11545 remote_ops
.to_trace_find
= remote_trace_find
;
11546 remote_ops
.to_get_trace_state_variable_value
11547 = remote_get_trace_state_variable_value
;
11548 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11549 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11550 remote_ops
.to_upload_trace_state_variables
11551 = remote_upload_trace_state_variables
;
11552 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11553 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11554 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11555 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11556 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11557 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11558 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11559 remote_ops
.to_verify_memory
= remote_verify_memory
;
11560 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11561 remote_ops
.to_set_permissions
= remote_set_permissions
;
11562 remote_ops
.to_static_tracepoint_marker_at
11563 = remote_static_tracepoint_marker_at
;
11564 remote_ops
.to_static_tracepoint_markers_by_strid
11565 = remote_static_tracepoint_markers_by_strid
;
11566 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11567 remote_ops
.to_use_agent
= remote_use_agent
;
11568 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11569 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11570 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11571 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11572 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11573 remote_ops
.to_read_btrace
= remote_read_btrace
;
11574 remote_ops
.to_augmented_libraries_svr4_read
=
11575 remote_augmented_libraries_svr4_read
;
11578 /* Set up the extended remote vector by making a copy of the standard
11579 remote vector and adding to it. */
11582 init_extended_remote_ops (void)
11584 extended_remote_ops
= remote_ops
;
11586 extended_remote_ops
.to_shortname
= "extended-remote";
11587 extended_remote_ops
.to_longname
=
11588 "Extended remote serial target in gdb-specific protocol";
11589 extended_remote_ops
.to_doc
=
11590 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11591 Specify the serial device it is connected to (e.g. /dev/ttya).";
11592 extended_remote_ops
.to_open
= extended_remote_open
;
11593 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11594 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11595 extended_remote_ops
.to_detach
= extended_remote_detach
;
11596 extended_remote_ops
.to_attach
= extended_remote_attach
;
11597 extended_remote_ops
.to_kill
= extended_remote_kill
;
11598 extended_remote_ops
.to_supports_disable_randomization
11599 = extended_remote_supports_disable_randomization
;
11603 remote_can_async_p (void)
11605 if (!target_async_permitted
)
11606 /* We only enable async when the user specifically asks for it. */
11609 /* We're async whenever the serial device is. */
11610 return serial_can_async_p (remote_desc
);
11614 remote_is_async_p (void)
11616 if (!target_async_permitted
)
11617 /* We only enable async when the user specifically asks for it. */
11620 /* We're async whenever the serial device is. */
11621 return serial_is_async_p (remote_desc
);
11624 /* Pass the SERIAL event on and up to the client. One day this code
11625 will be able to delay notifying the client of an event until the
11626 point where an entire packet has been received. */
11628 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11630 static void *async_client_context
;
11631 static serial_event_ftype remote_async_serial_handler
;
11634 remote_async_serial_handler (struct serial
*scb
, void *context
)
11636 /* Don't propogate error information up to the client. Instead let
11637 the client find out about the error by querying the target. */
11638 async_client_callback (INF_REG_EVENT
, async_client_context
);
11642 remote_async_inferior_event_handler (gdb_client_data data
)
11644 inferior_event_handler (INF_REG_EVENT
, NULL
);
11648 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11649 void *context
), void *context
)
11651 if (callback
!= NULL
)
11653 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11654 async_client_callback
= callback
;
11655 async_client_context
= context
;
11658 serial_async (remote_desc
, NULL
, NULL
);
11662 set_remote_cmd (char *args
, int from_tty
)
11664 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11668 show_remote_cmd (char *args
, int from_tty
)
11670 /* We can't just use cmd_show_list here, because we want to skip
11671 the redundant "show remote Z-packet" and the legacy aliases. */
11672 struct cleanup
*showlist_chain
;
11673 struct cmd_list_element
*list
= remote_show_cmdlist
;
11674 struct ui_out
*uiout
= current_uiout
;
11676 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11677 for (; list
!= NULL
; list
= list
->next
)
11678 if (strcmp (list
->name
, "Z-packet") == 0)
11680 else if (list
->type
== not_set_cmd
)
11681 /* Alias commands are exactly like the original, except they
11682 don't have the normal type. */
11686 struct cleanup
*option_chain
11687 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11689 ui_out_field_string (uiout
, "name", list
->name
);
11690 ui_out_text (uiout
, ": ");
11691 if (list
->type
== show_cmd
)
11692 do_show_command ((char *) NULL
, from_tty
, list
);
11694 cmd_func (list
, NULL
, from_tty
);
11695 /* Close the tuple. */
11696 do_cleanups (option_chain
);
11699 /* Close the tuple. */
11700 do_cleanups (showlist_chain
);
11704 /* Function to be called whenever a new objfile (shlib) is detected. */
11706 remote_new_objfile (struct objfile
*objfile
)
11708 if (remote_desc
!= 0) /* Have a remote connection. */
11709 remote_check_symbols ();
11712 /* Pull all the tracepoints defined on the target and create local
11713 data structures representing them. We don't want to create real
11714 tracepoints yet, we don't want to mess up the user's existing
11718 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11720 struct remote_state
*rs
= get_remote_state ();
11723 /* Ask for a first packet of tracepoint definition. */
11725 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11727 while (*p
&& *p
!= 'l')
11729 parse_tracepoint_definition (p
, utpp
);
11730 /* Ask for another packet of tracepoint definition. */
11732 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11739 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11741 struct remote_state
*rs
= get_remote_state ();
11744 /* Ask for a first packet of variable definition. */
11746 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11748 while (*p
&& *p
!= 'l')
11750 parse_tsv_definition (p
, utsvp
);
11751 /* Ask for another packet of variable definition. */
11753 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11759 /* The "set/show range-stepping" show hook. */
11762 show_range_stepping (struct ui_file
*file
, int from_tty
,
11763 struct cmd_list_element
*c
,
11766 fprintf_filtered (file
,
11767 _("Debugger's willingness to use range stepping "
11768 "is %s.\n"), value
);
11771 /* The "set/show range-stepping" set hook. */
11774 set_range_stepping (char *ignore_args
, int from_tty
,
11775 struct cmd_list_element
*c
)
11777 /* Whene enabling, check whether range stepping is actually
11778 supported by the target, and warn if not. */
11779 if (use_range_stepping
)
11781 if (remote_desc
!= NULL
)
11783 struct remote_state
*rs
= get_remote_state ();
11785 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11786 remote_vcont_probe (rs
);
11788 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11789 && rs
->supports_vCont
.r
)
11793 warning (_("Range stepping is not supported by the current target"));
11798 _initialize_remote (void)
11800 struct remote_state
*rs
;
11801 struct cmd_list_element
*cmd
;
11802 const char *cmd_name
;
11804 /* architecture specific data */
11805 remote_gdbarch_data_handle
=
11806 gdbarch_data_register_post_init (init_remote_state
);
11807 remote_g_packet_data_handle
=
11808 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11810 /* Initialize the per-target state. At the moment there is only one
11811 of these, not one per target. Only one target is active at a
11813 remote_state
= new_remote_state ();
11815 init_remote_ops ();
11816 add_target (&remote_ops
);
11818 init_extended_remote_ops ();
11819 add_target (&extended_remote_ops
);
11821 /* Hook into new objfile notification. */
11822 observer_attach_new_objfile (remote_new_objfile
);
11823 /* We're no longer interested in notification events of an inferior
11825 observer_attach_inferior_exit (discard_pending_stop_replies
);
11827 /* Set up signal handlers. */
11828 async_sigint_remote_token
=
11829 create_async_signal_handler (async_remote_interrupt
, NULL
);
11830 async_sigint_remote_twice_token
=
11831 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11834 init_remote_threadtests ();
11837 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11838 /* set/show remote ... */
11840 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11841 Remote protocol specific variables\n\
11842 Configure various remote-protocol specific variables such as\n\
11843 the packets being used"),
11844 &remote_set_cmdlist
, "set remote ",
11845 0 /* allow-unknown */, &setlist
);
11846 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11847 Remote protocol specific variables\n\
11848 Configure various remote-protocol specific variables such as\n\
11849 the packets being used"),
11850 &remote_show_cmdlist
, "show remote ",
11851 0 /* allow-unknown */, &showlist
);
11853 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11854 Compare section data on target to the exec file.\n\
11855 Argument is a single section name (default: all loaded sections)."),
11858 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11859 Send an arbitrary packet to a remote target.\n\
11860 maintenance packet TEXT\n\
11861 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11862 this command sends the string TEXT to the inferior, and displays the\n\
11863 response packet. GDB supplies the initial `$' character, and the\n\
11864 terminating `#' character and checksum."),
11867 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11868 Set whether to send break if interrupted."), _("\
11869 Show whether to send break if interrupted."), _("\
11870 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11871 set_remotebreak
, show_remotebreak
,
11872 &setlist
, &showlist
);
11873 cmd_name
= "remotebreak";
11874 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11875 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11876 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11877 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11878 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11880 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11881 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11883 Set interrupt sequence to remote target."), _("\
11884 Show interrupt sequence to remote target."), _("\
11885 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11886 NULL
, show_interrupt_sequence
,
11887 &remote_set_cmdlist
,
11888 &remote_show_cmdlist
);
11890 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11891 &interrupt_on_connect
, _("\
11892 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11893 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11894 If set, interrupt sequence is sent to remote target."),
11896 &remote_set_cmdlist
, &remote_show_cmdlist
);
11898 /* Install commands for configuring memory read/write packets. */
11900 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11901 Set the maximum number of bytes per memory write packet (deprecated)."),
11903 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11904 Show the maximum number of bytes per memory write packet (deprecated)."),
11906 add_cmd ("memory-write-packet-size", no_class
,
11907 set_memory_write_packet_size
, _("\
11908 Set the maximum number of bytes per memory-write packet.\n\
11909 Specify the number of bytes in a packet or 0 (zero) for the\n\
11910 default packet size. The actual limit is further reduced\n\
11911 dependent on the target. Specify ``fixed'' to disable the\n\
11912 further restriction and ``limit'' to enable that restriction."),
11913 &remote_set_cmdlist
);
11914 add_cmd ("memory-read-packet-size", no_class
,
11915 set_memory_read_packet_size
, _("\
11916 Set the maximum number of bytes per memory-read packet.\n\
11917 Specify the number of bytes in a packet or 0 (zero) for the\n\
11918 default packet size. The actual limit is further reduced\n\
11919 dependent on the target. Specify ``fixed'' to disable the\n\
11920 further restriction and ``limit'' to enable that restriction."),
11921 &remote_set_cmdlist
);
11922 add_cmd ("memory-write-packet-size", no_class
,
11923 show_memory_write_packet_size
,
11924 _("Show the maximum number of bytes per memory-write packet."),
11925 &remote_show_cmdlist
);
11926 add_cmd ("memory-read-packet-size", no_class
,
11927 show_memory_read_packet_size
,
11928 _("Show the maximum number of bytes per memory-read packet."),
11929 &remote_show_cmdlist
);
11931 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11932 &remote_hw_watchpoint_limit
, _("\
11933 Set the maximum number of target hardware watchpoints."), _("\
11934 Show the maximum number of target hardware watchpoints."), _("\
11935 Specify a negative limit for unlimited."),
11936 NULL
, NULL
, /* FIXME: i18n: The maximum
11937 number of target hardware
11938 watchpoints is %s. */
11939 &remote_set_cmdlist
, &remote_show_cmdlist
);
11940 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11941 &remote_hw_watchpoint_length_limit
, _("\
11942 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11943 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11944 Specify a negative limit for unlimited."),
11945 NULL
, NULL
, /* FIXME: i18n: The maximum
11946 length (in bytes) of a target
11947 hardware watchpoint is %s. */
11948 &remote_set_cmdlist
, &remote_show_cmdlist
);
11949 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11950 &remote_hw_breakpoint_limit
, _("\
11951 Set the maximum number of target hardware breakpoints."), _("\
11952 Show the maximum number of target hardware breakpoints."), _("\
11953 Specify a negative limit for unlimited."),
11954 NULL
, NULL
, /* FIXME: i18n: The maximum
11955 number of target hardware
11956 breakpoints is %s. */
11957 &remote_set_cmdlist
, &remote_show_cmdlist
);
11959 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11960 &remote_address_size
, _("\
11961 Set the maximum size of the address (in bits) in a memory packet."), _("\
11962 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11964 NULL
, /* FIXME: i18n: */
11965 &setlist
, &showlist
);
11967 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11968 "X", "binary-download", 1);
11970 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11971 "vCont", "verbose-resume", 0);
11973 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11974 "QPassSignals", "pass-signals", 0);
11976 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11977 "QProgramSignals", "program-signals", 0);
11979 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11980 "qSymbol", "symbol-lookup", 0);
11982 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11983 "P", "set-register", 1);
11985 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11986 "p", "fetch-register", 1);
11988 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11989 "Z0", "software-breakpoint", 0);
11991 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11992 "Z1", "hardware-breakpoint", 0);
11994 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11995 "Z2", "write-watchpoint", 0);
11997 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11998 "Z3", "read-watchpoint", 0);
12000 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12001 "Z4", "access-watchpoint", 0);
12003 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12004 "qXfer:auxv:read", "read-aux-vector", 0);
12006 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12007 "qXfer:features:read", "target-features", 0);
12009 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12010 "qXfer:libraries:read", "library-info", 0);
12012 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12013 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12015 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12016 "qXfer:memory-map:read", "memory-map", 0);
12018 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12019 "qXfer:spu:read", "read-spu-object", 0);
12021 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12022 "qXfer:spu:write", "write-spu-object", 0);
12024 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12025 "qXfer:osdata:read", "osdata", 0);
12027 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12028 "qXfer:threads:read", "threads", 0);
12030 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12031 "qXfer:siginfo:read", "read-siginfo-object", 0);
12033 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12034 "qXfer:siginfo:write", "write-siginfo-object", 0);
12036 add_packet_config_cmd
12037 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12038 "qXfer:traceframe-info:read", "traceframe-info", 0);
12040 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12041 "qXfer:uib:read", "unwind-info-block", 0);
12043 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12044 "qGetTLSAddr", "get-thread-local-storage-address",
12047 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12048 "qGetTIBAddr", "get-thread-information-block-address",
12051 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12052 "bc", "reverse-continue", 0);
12054 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12055 "bs", "reverse-step", 0);
12057 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12058 "qSupported", "supported-packets", 0);
12060 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12061 "qSearch:memory", "search-memory", 0);
12063 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12064 "qTStatus", "trace-status", 0);
12066 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12067 "vFile:open", "hostio-open", 0);
12069 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12070 "vFile:pread", "hostio-pread", 0);
12072 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12073 "vFile:pwrite", "hostio-pwrite", 0);
12075 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12076 "vFile:close", "hostio-close", 0);
12078 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12079 "vFile:unlink", "hostio-unlink", 0);
12081 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12082 "vFile:readlink", "hostio-readlink", 0);
12084 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12085 "vAttach", "attach", 0);
12087 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12090 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12091 "QStartNoAckMode", "noack", 0);
12093 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12094 "vKill", "kill", 0);
12096 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12097 "qAttached", "query-attached", 0);
12099 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12100 "ConditionalTracepoints",
12101 "conditional-tracepoints", 0);
12103 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12104 "ConditionalBreakpoints",
12105 "conditional-breakpoints", 0);
12107 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12108 "BreakpointCommands",
12109 "breakpoint-commands", 0);
12111 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12112 "FastTracepoints", "fast-tracepoints", 0);
12114 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12115 "TracepointSource", "TracepointSource", 0);
12117 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12118 "QAllow", "allow", 0);
12120 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12121 "StaticTracepoints", "static-tracepoints", 0);
12123 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12124 "InstallInTrace", "install-in-trace", 0);
12126 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12127 "qXfer:statictrace:read", "read-sdata-object", 0);
12129 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12130 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12132 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12133 "QDisableRandomization", "disable-randomization", 0);
12135 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12136 "QAgent", "agent", 0);
12138 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12139 "QTBuffer:size", "trace-buffer-size", 0);
12141 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12142 "Qbtrace:off", "disable-btrace", 0);
12144 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12145 "Qbtrace:bts", "enable-btrace", 0);
12147 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12148 "qXfer:btrace", "read-btrace", 0);
12150 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12151 Z sub-packet has its own set and show commands, but users may
12152 have sets to this variable in their .gdbinit files (or in their
12154 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12155 &remote_Z_packet_detect
, _("\
12156 Set use of remote protocol `Z' packets"), _("\
12157 Show use of remote protocol `Z' packets "), _("\
12158 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12160 set_remote_protocol_Z_packet_cmd
,
12161 show_remote_protocol_Z_packet_cmd
,
12162 /* FIXME: i18n: Use of remote protocol
12163 `Z' packets is %s. */
12164 &remote_set_cmdlist
, &remote_show_cmdlist
);
12166 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12167 Manipulate files on the remote system\n\
12168 Transfer files to and from the remote target system."),
12169 &remote_cmdlist
, "remote ",
12170 0 /* allow-unknown */, &cmdlist
);
12172 add_cmd ("put", class_files
, remote_put_command
,
12173 _("Copy a local file to the remote system."),
12176 add_cmd ("get", class_files
, remote_get_command
,
12177 _("Copy a remote file to the local system."),
12180 add_cmd ("delete", class_files
, remote_delete_command
,
12181 _("Delete a remote file."),
12184 remote_exec_file
= xstrdup ("");
12185 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12186 &remote_exec_file
, _("\
12187 Set the remote pathname for \"run\""), _("\
12188 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12189 &remote_set_cmdlist
, &remote_show_cmdlist
);
12191 add_setshow_boolean_cmd ("range-stepping", class_run
,
12192 &use_range_stepping
, _("\
12193 Enable or disable range stepping."), _("\
12194 Show whether target-assisted range stepping is enabled."), _("\
12195 If on, and the target supports it, when stepping a source line, GDB\n\
12196 tells the target to step the corresponding range of addresses itself instead\n\
12197 of issuing multiple single-steps. This speeds up source level\n\
12198 stepping. If off, GDB always issues single-steps, even if range\n\
12199 stepping is supported by the target. The default is on."),
12200 set_range_stepping
,
12201 show_range_stepping
,
12205 /* Eventually initialize fileio. See fileio.c */
12206 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12208 /* Take advantage of the fact that the LWP field is not used, to tag
12209 special ptids with it set to != 0. */
12210 magic_null_ptid
= ptid_build (42000, 1, -1);
12211 not_sent_ptid
= ptid_build (42000, 1, -2);
12212 any_thread_ptid
= ptid_build (42000, 1, 0);
12214 target_buf_size
= 2048;
12215 target_buf
= xmalloc (target_buf_size
);