1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
31 #include "exceptions.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "xml-support.h"
65 #include "memory-map.h"
67 #include "tracepoint.h"
71 /* Temp hacks for tracepoint encoding migration. */
72 static char *target_buf
;
73 static long target_buf_size
;
75 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
76 char ***tdp_actions
, char ***stepping_actions
);
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 cleanup_sigint_signal_handler (void *dummy
);
92 static void initialize_sigint_signal_handler (void);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
97 static void handle_remote_sigint (int);
98 static void handle_remote_sigint_twice (int);
99 static void async_remote_interrupt (gdb_client_data
);
100 void async_remote_interrupt_twice (gdb_client_data
);
102 static void remote_files_info (struct target_ops
*ignore
);
104 static void remote_prepare_to_store (struct regcache
*regcache
);
106 static void remote_open (char *name
, int from_tty
);
108 static void extended_remote_open (char *name
, int from_tty
);
110 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
112 static void remote_close (int quitting
);
114 static void remote_mourn (struct target_ops
*ops
);
116 static void extended_remote_restart (void);
118 static void extended_remote_mourn (struct target_ops
*);
120 static void remote_mourn_1 (struct target_ops
*);
122 static void remote_send (char **buf
, long *sizeof_buf_p
);
124 static int readchar (int timeout
);
126 static void remote_kill (struct target_ops
*ops
);
128 static int tohex (int nib
);
130 static int remote_can_async_p (void);
132 static int remote_is_async_p (void);
134 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
135 void *context
), void *context
);
137 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
139 static void remote_interrupt (int signo
);
141 static void remote_interrupt_twice (int signo
);
143 static void interrupt_query (void);
145 static void set_general_thread (struct ptid ptid
);
146 static void set_continue_thread (struct ptid ptid
);
148 static void get_offsets (void);
150 static void skip_frame (void);
152 static long read_frame (char **buf_p
, long *sizeof_buf
);
154 static int hexnumlen (ULONGEST num
);
156 static void init_remote_ops (void);
158 static void init_extended_remote_ops (void);
160 static void remote_stop (ptid_t
);
162 static int ishex (int ch
, int *val
);
164 static int stubhex (int ch
);
166 static int hexnumstr (char *, ULONGEST
);
168 static int hexnumnstr (char *, ULONGEST
, int);
170 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
172 static void print_packet (char *);
174 static void compare_sections_command (char *, int);
176 static void packet_command (char *, int);
178 static int stub_unpack_int (char *buff
, int fieldlength
);
180 static ptid_t
remote_current_thread (ptid_t oldptid
);
182 static void remote_find_new_threads (void);
184 static void record_currthread (ptid_t currthread
);
186 static int fromhex (int a
);
188 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
190 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
192 static int putpkt_binary (char *buf
, int cnt
);
194 static void check_binary_download (CORE_ADDR addr
);
196 struct packet_config
;
198 static void show_packet_config_cmd (struct packet_config
*config
);
200 static void update_packet_config (struct packet_config
*config
);
202 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
203 struct cmd_list_element
*c
);
205 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
207 struct cmd_list_element
*c
,
210 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
211 static ptid_t
read_ptid (char *buf
, char **obuf
);
213 static void remote_set_permissions (void);
216 static int remote_get_trace_status (struct trace_status
*ts
);
218 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
220 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
222 static void remote_query_supported (void);
224 static void remote_check_symbols (struct objfile
*objfile
);
226 void _initialize_remote (void);
229 static struct stop_reply
*stop_reply_xmalloc (void);
230 static void stop_reply_xfree (struct stop_reply
*);
231 static void do_stop_reply_xfree (void *arg
);
232 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
233 static void push_stop_reply (struct stop_reply
*);
234 static void remote_get_pending_stop_replies (void);
235 static void discard_pending_stop_replies (int pid
);
236 static int peek_stop_reply (ptid_t ptid
);
238 static void remote_async_inferior_event_handler (gdb_client_data
);
239 static void remote_async_get_pending_events_handler (gdb_client_data
);
241 static void remote_terminal_ours (void);
243 static int remote_read_description_p (struct target_ops
*target
);
245 static void remote_console_output (char *msg
);
247 /* The non-stop remote protocol provisions for one pending stop reply.
248 This is where we keep it until it is acknowledged. */
250 static struct stop_reply
*pending_stop_reply
= NULL
;
254 static struct cmd_list_element
*remote_cmdlist
;
256 /* For "set remote" and "show remote". */
258 static struct cmd_list_element
*remote_set_cmdlist
;
259 static struct cmd_list_element
*remote_show_cmdlist
;
261 /* Description of the remote protocol state for the currently
262 connected target. This is per-target state, and independent of the
263 selected architecture. */
267 /* A buffer to use for incoming packets, and its current size. The
268 buffer is grown dynamically for larger incoming packets.
269 Outgoing packets may also be constructed in this buffer.
270 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
271 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
276 /* If we negotiated packet size explicitly (and thus can bypass
277 heuristics for the largest packet size that will not overflow
278 a buffer in the stub), this will be set to that packet size.
279 Otherwise zero, meaning to use the guessed size. */
280 long explicit_packet_size
;
282 /* remote_wait is normally called when the target is running and
283 waits for a stop reply packet. But sometimes we need to call it
284 when the target is already stopped. We can send a "?" packet
285 and have remote_wait read the response. Or, if we already have
286 the response, we can stash it in BUF and tell remote_wait to
287 skip calling getpkt. This flag is set when BUF contains a
288 stop reply packet and the target is not waiting. */
289 int cached_wait_status
;
291 /* True, if in no ack mode. That is, neither GDB nor the stub will
292 expect acks from each other. The connection is assumed to be
296 /* True if we're connected in extended remote mode. */
299 /* True if the stub reported support for multi-process
301 int multi_process_aware
;
303 /* True if we resumed the target and we're waiting for the target to
304 stop. In the mean time, we can't start another command/query.
305 The remote server wouldn't be ready to process it, so we'd
306 timeout waiting for a reply that would never come and eventually
307 we'd close the connection. This can happen in asynchronous mode
308 because we allow GDB commands while the target is running. */
309 int waiting_for_stop_reply
;
311 /* True if the stub reports support for non-stop mode. */
314 /* True if the stub reports support for vCont;t. */
317 /* True if the stub reports support for conditional tracepoints. */
318 int cond_tracepoints
;
320 /* True if the stub reports support for fast tracepoints. */
321 int fast_tracepoints
;
323 /* True if the stub reports support for static tracepoints. */
324 int static_tracepoints
;
326 /* True if the stub can continue running a trace while GDB is
328 int disconnected_tracing
;
330 /* True if the stub reports support for enabling and disabling
331 tracepoints while a trace experiment is running. */
332 int enable_disable_tracepoints
;
334 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
335 responded to that. */
339 /* Private data that we'll store in (struct thread_info)->private. */
340 struct private_thread_info
347 free_private_thread_info (struct private_thread_info
*info
)
353 /* Returns true if the multi-process extensions are in effect. */
355 remote_multi_process_p (struct remote_state
*rs
)
357 return rs
->extended
&& rs
->multi_process_aware
;
360 /* This data could be associated with a target, but we do not always
361 have access to the current target when we need it, so for now it is
362 static. This will be fine for as long as only one target is in use
364 static struct remote_state remote_state
;
366 static struct remote_state
*
367 get_remote_state_raw (void)
369 return &remote_state
;
372 /* Description of the remote protocol for a given architecture. */
376 long offset
; /* Offset into G packet. */
377 long regnum
; /* GDB's internal register number. */
378 LONGEST pnum
; /* Remote protocol register number. */
379 int in_g_packet
; /* Always part of G packet. */
380 /* long size in bytes; == register_size (target_gdbarch, regnum);
382 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
386 struct remote_arch_state
388 /* Description of the remote protocol registers. */
389 long sizeof_g_packet
;
391 /* Description of the remote protocol registers indexed by REGNUM
392 (making an array gdbarch_num_regs in size). */
393 struct packet_reg
*regs
;
395 /* This is the size (in chars) of the first response to the ``g''
396 packet. It is used as a heuristic when determining the maximum
397 size of memory-read and memory-write packets. A target will
398 typically only reserve a buffer large enough to hold the ``g''
399 packet. The size does not include packet overhead (headers and
401 long actual_register_packet_size
;
403 /* This is the maximum size (in chars) of a non read/write packet.
404 It is also used as a cap on the size of read/write packets. */
405 long remote_packet_size
;
408 long sizeof_pkt
= 2000;
410 /* Utility: generate error from an incoming stub packet. */
412 trace_error (char *buf
)
415 return; /* not an error msg */
418 case '1': /* malformed packet error */
419 if (*++buf
== '0') /* general case: */
420 error (_("remote.c: error in outgoing packet."));
422 error (_("remote.c: error in outgoing packet at field #%ld."),
423 strtol (buf
, NULL
, 16));
425 error (_("trace API error 0x%s."), ++buf
);
427 error (_("Target returns error code '%s'."), buf
);
431 /* Utility: wait for reply from stub, while accepting "O" packets. */
433 remote_get_noisy_reply (char **buf_p
,
436 do /* Loop on reply from remote stub. */
440 QUIT
; /* Allow user to bail out with ^C. */
441 getpkt (buf_p
, sizeof_buf
, 0);
445 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
448 CORE_ADDR from
, to
, org_to
;
450 int adjusted_size
= 0;
451 volatile struct gdb_exception ex
;
453 p
= buf
+ strlen ("qRelocInsn:");
454 pp
= unpack_varlen_hex (p
, &ul
);
456 error (_("invalid qRelocInsn packet: %s"), buf
);
460 unpack_varlen_hex (p
, &ul
);
465 TRY_CATCH (ex
, RETURN_MASK_ALL
)
467 gdbarch_relocate_instruction (target_gdbarch
, &to
, from
);
471 adjusted_size
= to
- org_to
;
473 sprintf (buf
, "qRelocInsn:%x", adjusted_size
);
476 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
478 /* Propagate memory errors silently back to the target.
479 The stub may have limited the range of addresses we
480 can write to, for example. */
485 /* Something unexpectedly bad happened. Be verbose so
486 we can tell what, and propagate the error back to the
487 stub, so it doesn't get stuck waiting for a
489 exception_fprintf (gdb_stderr
, ex
,
490 _("warning: relocating instruction: "));
494 else if (buf
[0] == 'O' && buf
[1] != 'K')
495 remote_console_output (buf
+ 1); /* 'O' message from stub */
497 return buf
; /* Here's the actual reply. */
502 /* Handle for retreving the remote protocol data from gdbarch. */
503 static struct gdbarch_data
*remote_gdbarch_data_handle
;
505 static struct remote_arch_state
*
506 get_remote_arch_state (void)
508 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
511 /* Fetch the global remote target state. */
513 static struct remote_state
*
514 get_remote_state (void)
516 /* Make sure that the remote architecture state has been
517 initialized, because doing so might reallocate rs->buf. Any
518 function which calls getpkt also needs to be mindful of changes
519 to rs->buf, but this call limits the number of places which run
521 get_remote_arch_state ();
523 return get_remote_state_raw ();
527 compare_pnums (const void *lhs_
, const void *rhs_
)
529 const struct packet_reg
* const *lhs
= lhs_
;
530 const struct packet_reg
* const *rhs
= rhs_
;
532 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
534 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
541 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
543 int regnum
, num_remote_regs
, offset
;
544 struct packet_reg
**remote_regs
;
546 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
548 struct packet_reg
*r
= ®s
[regnum
];
550 if (register_size (gdbarch
, regnum
) == 0)
551 /* Do not try to fetch zero-sized (placeholder) registers. */
554 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
559 /* Define the g/G packet format as the contents of each register
560 with a remote protocol number, in order of ascending protocol
563 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
564 * sizeof (struct packet_reg
*));
565 for (num_remote_regs
= 0, regnum
= 0;
566 regnum
< gdbarch_num_regs (gdbarch
);
568 if (regs
[regnum
].pnum
!= -1)
569 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
571 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
574 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
576 remote_regs
[regnum
]->in_g_packet
= 1;
577 remote_regs
[regnum
]->offset
= offset
;
578 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
584 /* Given the architecture described by GDBARCH, return the remote
585 protocol register's number and the register's offset in the g/G
586 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
587 If the target does not have a mapping for REGNUM, return false,
588 otherwise, return true. */
591 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
592 int *pnum
, int *poffset
)
595 struct packet_reg
*regs
;
596 struct cleanup
*old_chain
;
598 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
600 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
601 old_chain
= make_cleanup (xfree
, regs
);
603 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
605 *pnum
= regs
[regnum
].pnum
;
606 *poffset
= regs
[regnum
].offset
;
608 do_cleanups (old_chain
);
614 init_remote_state (struct gdbarch
*gdbarch
)
616 struct remote_state
*rs
= get_remote_state_raw ();
617 struct remote_arch_state
*rsa
;
619 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
621 /* Use the architecture to build a regnum<->pnum table, which will be
622 1:1 unless a feature set specifies otherwise. */
623 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
624 gdbarch_num_regs (gdbarch
),
627 /* Record the maximum possible size of the g packet - it may turn out
629 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
631 /* Default maximum number of characters in a packet body. Many
632 remote stubs have a hardwired buffer size of 400 bytes
633 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
634 as the maximum packet-size to ensure that the packet and an extra
635 NUL character can always fit in the buffer. This stops GDB
636 trashing stubs that try to squeeze an extra NUL into what is
637 already a full buffer (As of 1999-12-04 that was most stubs). */
638 rsa
->remote_packet_size
= 400 - 1;
640 /* This one is filled in when a ``g'' packet is received. */
641 rsa
->actual_register_packet_size
= 0;
643 /* Should rsa->sizeof_g_packet needs more space than the
644 default, adjust the size accordingly. Remember that each byte is
645 encoded as two characters. 32 is the overhead for the packet
646 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
647 (``$NN:G...#NN'') is a better guess, the below has been padded a
649 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
650 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
652 /* Make sure that the packet buffer is plenty big enough for
653 this architecture. */
654 if (rs
->buf_size
< rsa
->remote_packet_size
)
656 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
657 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
663 /* Return the current allowed size of a remote packet. This is
664 inferred from the current architecture, and should be used to
665 limit the length of outgoing packets. */
667 get_remote_packet_size (void)
669 struct remote_state
*rs
= get_remote_state ();
670 struct remote_arch_state
*rsa
= get_remote_arch_state ();
672 if (rs
->explicit_packet_size
)
673 return rs
->explicit_packet_size
;
675 return rsa
->remote_packet_size
;
678 static struct packet_reg
*
679 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
681 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
685 struct packet_reg
*r
= &rsa
->regs
[regnum
];
687 gdb_assert (r
->regnum
== regnum
);
692 static struct packet_reg
*
693 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
697 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
699 struct packet_reg
*r
= &rsa
->regs
[i
];
707 /* FIXME: graces/2002-08-08: These variables should eventually be
708 bound to an instance of the target object (as in gdbarch-tdep()),
709 when such a thing exists. */
711 /* This is set to the data address of the access causing the target
712 to stop for a watchpoint. */
713 static CORE_ADDR remote_watch_data_address
;
715 /* This is non-zero if target stopped for a watchpoint. */
716 static int remote_stopped_by_watchpoint_p
;
718 static struct target_ops remote_ops
;
720 static struct target_ops extended_remote_ops
;
722 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
723 ``forever'' still use the normal timeout mechanism. This is
724 currently used by the ASYNC code to guarentee that target reads
725 during the initial connect always time-out. Once getpkt has been
726 modified to return a timeout indication and, in turn
727 remote_wait()/wait_for_inferior() have gained a timeout parameter
729 static int wait_forever_enabled_p
= 1;
731 /* Allow the user to specify what sequence to send to the remote
732 when he requests a program interruption: Although ^C is usually
733 what remote systems expect (this is the default, here), it is
734 sometimes preferable to send a break. On other systems such
735 as the Linux kernel, a break followed by g, which is Magic SysRq g
736 is required in order to interrupt the execution. */
737 const char interrupt_sequence_control_c
[] = "Ctrl-C";
738 const char interrupt_sequence_break
[] = "BREAK";
739 const char interrupt_sequence_break_g
[] = "BREAK-g";
740 static const char *interrupt_sequence_modes
[] =
742 interrupt_sequence_control_c
,
743 interrupt_sequence_break
,
744 interrupt_sequence_break_g
,
747 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
750 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
751 struct cmd_list_element
*c
,
754 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
755 fprintf_filtered (file
,
756 _("Send the ASCII ETX character (Ctrl-c) "
757 "to the remote target to interrupt the "
758 "execution of the program.\n"));
759 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
760 fprintf_filtered (file
,
761 _("send a break signal to the remote target "
762 "to interrupt the execution of the program.\n"));
763 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
764 fprintf_filtered (file
,
765 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
766 "the remote target to interrupt the execution "
767 "of Linux kernel.\n"));
769 internal_error (__FILE__
, __LINE__
,
770 _("Invalid value for interrupt_sequence_mode: %s."),
771 interrupt_sequence_mode
);
774 /* This boolean variable specifies whether interrupt_sequence is sent
775 to the remote target when gdb connects to it.
776 This is mostly needed when you debug the Linux kernel: The Linux kernel
777 expects BREAK g which is Magic SysRq g for connecting gdb. */
778 static int interrupt_on_connect
= 0;
780 /* This variable is used to implement the "set/show remotebreak" commands.
781 Since these commands are now deprecated in favor of "set/show remote
782 interrupt-sequence", it no longer has any effect on the code. */
783 static int remote_break
;
786 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
789 interrupt_sequence_mode
= interrupt_sequence_break
;
791 interrupt_sequence_mode
= interrupt_sequence_control_c
;
795 show_remotebreak (struct ui_file
*file
, int from_tty
,
796 struct cmd_list_element
*c
,
801 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
802 remote_open knows that we don't have a file open when the program
804 static struct serial
*remote_desc
= NULL
;
806 /* This variable sets the number of bits in an address that are to be
807 sent in a memory ("M" or "m") packet. Normally, after stripping
808 leading zeros, the entire address would be sent. This variable
809 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
810 initial implementation of remote.c restricted the address sent in
811 memory packets to ``host::sizeof long'' bytes - (typically 32
812 bits). Consequently, for 64 bit targets, the upper 32 bits of an
813 address was never sent. Since fixing this bug may cause a break in
814 some remote targets this variable is principly provided to
815 facilitate backward compatibility. */
817 static int remote_address_size
;
819 /* Temporary to track who currently owns the terminal. See
820 remote_terminal_* for more details. */
822 static int remote_async_terminal_ours_p
;
824 /* The executable file to use for "run" on the remote side. */
826 static char *remote_exec_file
= "";
829 /* User configurable variables for the number of characters in a
830 memory read/write packet. MIN (rsa->remote_packet_size,
831 rsa->sizeof_g_packet) is the default. Some targets need smaller
832 values (fifo overruns, et.al.) and some users need larger values
833 (speed up transfers). The variables ``preferred_*'' (the user
834 request), ``current_*'' (what was actually set) and ``forced_*''
835 (Positive - a soft limit, negative - a hard limit). */
837 struct memory_packet_config
844 /* Compute the current size of a read/write packet. Since this makes
845 use of ``actual_register_packet_size'' the computation is dynamic. */
848 get_memory_packet_size (struct memory_packet_config
*config
)
850 struct remote_state
*rs
= get_remote_state ();
851 struct remote_arch_state
*rsa
= get_remote_arch_state ();
853 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
854 law?) that some hosts don't cope very well with large alloca()
855 calls. Eventually the alloca() code will be replaced by calls to
856 xmalloc() and make_cleanups() allowing this restriction to either
857 be lifted or removed. */
858 #ifndef MAX_REMOTE_PACKET_SIZE
859 #define MAX_REMOTE_PACKET_SIZE 16384
861 /* NOTE: 20 ensures we can write at least one byte. */
862 #ifndef MIN_REMOTE_PACKET_SIZE
863 #define MIN_REMOTE_PACKET_SIZE 20
868 if (config
->size
<= 0)
869 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
871 what_they_get
= config
->size
;
875 what_they_get
= get_remote_packet_size ();
876 /* Limit the packet to the size specified by the user. */
878 && what_they_get
> config
->size
)
879 what_they_get
= config
->size
;
881 /* Limit it to the size of the targets ``g'' response unless we have
882 permission from the stub to use a larger packet size. */
883 if (rs
->explicit_packet_size
== 0
884 && rsa
->actual_register_packet_size
> 0
885 && what_they_get
> rsa
->actual_register_packet_size
)
886 what_they_get
= rsa
->actual_register_packet_size
;
888 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
889 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
890 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
891 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
893 /* Make sure there is room in the global buffer for this packet
894 (including its trailing NUL byte). */
895 if (rs
->buf_size
< what_they_get
+ 1)
897 rs
->buf_size
= 2 * what_they_get
;
898 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
901 return what_they_get
;
904 /* Update the size of a read/write packet. If they user wants
905 something really big then do a sanity check. */
908 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
910 int fixed_p
= config
->fixed_p
;
911 long size
= config
->size
;
914 error (_("Argument required (integer, `fixed' or `limited')."));
915 else if (strcmp (args
, "hard") == 0
916 || strcmp (args
, "fixed") == 0)
918 else if (strcmp (args
, "soft") == 0
919 || strcmp (args
, "limit") == 0)
925 size
= strtoul (args
, &end
, 0);
927 error (_("Invalid %s (bad syntax)."), config
->name
);
929 /* Instead of explicitly capping the size of a packet to
930 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
931 instead allowed to set the size to something arbitrarily
933 if (size
> MAX_REMOTE_PACKET_SIZE
)
934 error (_("Invalid %s (too large)."), config
->name
);
938 if (fixed_p
&& !config
->fixed_p
)
940 if (! query (_("The target may not be able to correctly handle a %s\n"
941 "of %ld bytes. Change the packet size? "),
943 error (_("Packet size not changed."));
945 /* Update the config. */
946 config
->fixed_p
= fixed_p
;
951 show_memory_packet_size (struct memory_packet_config
*config
)
953 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
955 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
956 get_memory_packet_size (config
));
958 printf_filtered (_("Packets are limited to %ld bytes.\n"),
959 get_memory_packet_size (config
));
962 static struct memory_packet_config memory_write_packet_config
=
964 "memory-write-packet-size",
968 set_memory_write_packet_size (char *args
, int from_tty
)
970 set_memory_packet_size (args
, &memory_write_packet_config
);
974 show_memory_write_packet_size (char *args
, int from_tty
)
976 show_memory_packet_size (&memory_write_packet_config
);
980 get_memory_write_packet_size (void)
982 return get_memory_packet_size (&memory_write_packet_config
);
985 static struct memory_packet_config memory_read_packet_config
=
987 "memory-read-packet-size",
991 set_memory_read_packet_size (char *args
, int from_tty
)
993 set_memory_packet_size (args
, &memory_read_packet_config
);
997 show_memory_read_packet_size (char *args
, int from_tty
)
999 show_memory_packet_size (&memory_read_packet_config
);
1003 get_memory_read_packet_size (void)
1005 long size
= get_memory_packet_size (&memory_read_packet_config
);
1007 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1008 extra buffer size argument before the memory read size can be
1009 increased beyond this. */
1010 if (size
> get_remote_packet_size ())
1011 size
= get_remote_packet_size ();
1016 /* Generic configuration support for packets the stub optionally
1017 supports. Allows the user to specify the use of the packet as well
1018 as allowing GDB to auto-detect support in the remote stub. */
1022 PACKET_SUPPORT_UNKNOWN
= 0,
1027 struct packet_config
1031 enum auto_boolean detect
;
1032 enum packet_support support
;
1035 /* Analyze a packet's return value and update the packet config
1046 update_packet_config (struct packet_config
*config
)
1048 switch (config
->detect
)
1050 case AUTO_BOOLEAN_TRUE
:
1051 config
->support
= PACKET_ENABLE
;
1053 case AUTO_BOOLEAN_FALSE
:
1054 config
->support
= PACKET_DISABLE
;
1056 case AUTO_BOOLEAN_AUTO
:
1057 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1063 show_packet_config_cmd (struct packet_config
*config
)
1065 char *support
= "internal-error";
1067 switch (config
->support
)
1070 support
= "enabled";
1072 case PACKET_DISABLE
:
1073 support
= "disabled";
1075 case PACKET_SUPPORT_UNKNOWN
:
1076 support
= "unknown";
1079 switch (config
->detect
)
1081 case AUTO_BOOLEAN_AUTO
:
1082 printf_filtered (_("Support for the `%s' packet "
1083 "is auto-detected, currently %s.\n"),
1084 config
->name
, support
);
1086 case AUTO_BOOLEAN_TRUE
:
1087 case AUTO_BOOLEAN_FALSE
:
1088 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1089 config
->name
, support
);
1095 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1096 const char *title
, int legacy
)
1102 config
->name
= name
;
1103 config
->title
= title
;
1104 config
->detect
= AUTO_BOOLEAN_AUTO
;
1105 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1106 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1108 show_doc
= xstrprintf ("Show current use of remote "
1109 "protocol `%s' (%s) packet",
1111 /* set/show TITLE-packet {auto,on,off} */
1112 cmd_name
= xstrprintf ("%s-packet", title
);
1113 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1114 &config
->detect
, set_doc
,
1115 show_doc
, NULL
, /* help_doc */
1116 set_remote_protocol_packet_cmd
,
1117 show_remote_protocol_packet_cmd
,
1118 &remote_set_cmdlist
, &remote_show_cmdlist
);
1119 /* The command code copies the documentation strings. */
1122 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1127 legacy_name
= xstrprintf ("%s-packet", name
);
1128 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1129 &remote_set_cmdlist
);
1130 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1131 &remote_show_cmdlist
);
1135 static enum packet_result
1136 packet_check_result (const char *buf
)
1140 /* The stub recognized the packet request. Check that the
1141 operation succeeded. */
1143 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1145 /* "Enn" - definitly an error. */
1146 return PACKET_ERROR
;
1148 /* Always treat "E." as an error. This will be used for
1149 more verbose error messages, such as E.memtypes. */
1150 if (buf
[0] == 'E' && buf
[1] == '.')
1151 return PACKET_ERROR
;
1153 /* The packet may or may not be OK. Just assume it is. */
1157 /* The stub does not support the packet. */
1158 return PACKET_UNKNOWN
;
1161 static enum packet_result
1162 packet_ok (const char *buf
, struct packet_config
*config
)
1164 enum packet_result result
;
1166 result
= packet_check_result (buf
);
1171 /* The stub recognized the packet request. */
1172 switch (config
->support
)
1174 case PACKET_SUPPORT_UNKNOWN
:
1176 fprintf_unfiltered (gdb_stdlog
,
1177 "Packet %s (%s) is supported\n",
1178 config
->name
, config
->title
);
1179 config
->support
= PACKET_ENABLE
;
1181 case PACKET_DISABLE
:
1182 internal_error (__FILE__
, __LINE__
,
1183 _("packet_ok: attempt to use a disabled packet"));
1189 case PACKET_UNKNOWN
:
1190 /* The stub does not support the packet. */
1191 switch (config
->support
)
1194 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1195 /* If the stub previously indicated that the packet was
1196 supported then there is a protocol error.. */
1197 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1198 config
->name
, config
->title
);
1200 /* The user set it wrong. */
1201 error (_("Enabled packet %s (%s) not recognized by stub"),
1202 config
->name
, config
->title
);
1204 case PACKET_SUPPORT_UNKNOWN
:
1206 fprintf_unfiltered (gdb_stdlog
,
1207 "Packet %s (%s) is NOT supported\n",
1208 config
->name
, config
->title
);
1209 config
->support
= PACKET_DISABLE
;
1211 case PACKET_DISABLE
:
1233 PACKET_vFile_pwrite
,
1235 PACKET_vFile_unlink
,
1237 PACKET_qXfer_features
,
1238 PACKET_qXfer_libraries
,
1239 PACKET_qXfer_memory_map
,
1240 PACKET_qXfer_spu_read
,
1241 PACKET_qXfer_spu_write
,
1242 PACKET_qXfer_osdata
,
1243 PACKET_qXfer_threads
,
1244 PACKET_qXfer_statictrace_read
,
1245 PACKET_qXfer_traceframe_info
,
1249 PACKET_QPassSignals
,
1250 PACKET_qSearch_memory
,
1253 PACKET_QStartNoAckMode
,
1255 PACKET_qXfer_siginfo_read
,
1256 PACKET_qXfer_siginfo_write
,
1258 PACKET_ConditionalTracepoints
,
1259 PACKET_FastTracepoints
,
1260 PACKET_StaticTracepoints
,
1263 PACKET_TracepointSource
,
1269 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1272 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1273 struct cmd_list_element
*c
)
1275 struct packet_config
*packet
;
1277 for (packet
= remote_protocol_packets
;
1278 packet
< &remote_protocol_packets
[PACKET_MAX
];
1281 if (&packet
->detect
== c
->var
)
1283 update_packet_config (packet
);
1287 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1292 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1293 struct cmd_list_element
*c
,
1296 struct packet_config
*packet
;
1298 for (packet
= remote_protocol_packets
;
1299 packet
< &remote_protocol_packets
[PACKET_MAX
];
1302 if (&packet
->detect
== c
->var
)
1304 show_packet_config_cmd (packet
);
1308 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1312 /* Should we try one of the 'Z' requests? */
1316 Z_PACKET_SOFTWARE_BP
,
1317 Z_PACKET_HARDWARE_BP
,
1324 /* For compatibility with older distributions. Provide a ``set remote
1325 Z-packet ...'' command that updates all the Z packet types. */
1327 static enum auto_boolean remote_Z_packet_detect
;
1330 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1331 struct cmd_list_element
*c
)
1335 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1337 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1338 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1343 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1344 struct cmd_list_element
*c
,
1349 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1351 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1355 /* Should we try the 'ThreadInfo' query packet?
1357 This variable (NOT available to the user: auto-detect only!)
1358 determines whether GDB will use the new, simpler "ThreadInfo"
1359 query or the older, more complex syntax for thread queries.
1360 This is an auto-detect variable (set to true at each connect,
1361 and set to false when the target fails to recognize it). */
1363 static int use_threadinfo_query
;
1364 static int use_threadextra_query
;
1366 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1367 static struct async_signal_handler
*sigint_remote_twice_token
;
1368 static struct async_signal_handler
*sigint_remote_token
;
1371 /* Asynchronous signal handle registered as event loop source for
1372 when we have pending events ready to be passed to the core. */
1374 static struct async_event_handler
*remote_async_inferior_event_token
;
1376 /* Asynchronous signal handle registered as event loop source for when
1377 the remote sent us a %Stop notification. The registered callback
1378 will do a vStopped sequence to pull the rest of the events out of
1379 the remote side into our event queue. */
1381 static struct async_event_handler
*remote_async_get_pending_events_token
;
1384 static ptid_t magic_null_ptid
;
1385 static ptid_t not_sent_ptid
;
1386 static ptid_t any_thread_ptid
;
1388 /* These are the threads which we last sent to the remote system. The
1389 TID member will be -1 for all or -2 for not sent yet. */
1391 static ptid_t general_thread
;
1392 static ptid_t continue_thread
;
1394 /* This the traceframe which we last selected on the remote system.
1395 It will be -1 if no traceframe is selected. */
1396 static int remote_traceframe_number
= -1;
1398 /* Find out if the stub attached to PID (and hence GDB should offer to
1399 detach instead of killing it when bailing out). */
1402 remote_query_attached (int pid
)
1404 struct remote_state
*rs
= get_remote_state ();
1406 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1409 if (remote_multi_process_p (rs
))
1410 sprintf (rs
->buf
, "qAttached:%x", pid
);
1412 sprintf (rs
->buf
, "qAttached");
1415 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1417 switch (packet_ok (rs
->buf
,
1418 &remote_protocol_packets
[PACKET_qAttached
]))
1421 if (strcmp (rs
->buf
, "1") == 0)
1425 warning (_("Remote failure reply: %s"), rs
->buf
);
1427 case PACKET_UNKNOWN
:
1434 /* Add PID to GDB's inferior table. Since we can be connected to a
1435 remote system before before knowing about any inferior, mark the
1436 target with execution when we find the first inferior. If ATTACHED
1437 is 1, then we had just attached to this inferior. If it is 0, then
1438 we just created this inferior. If it is -1, then try querying the
1439 remote stub to find out if it had attached to the inferior or
1442 static struct inferior
*
1443 remote_add_inferior (int pid
, int attached
)
1445 struct inferior
*inf
;
1447 /* Check whether this process we're learning about is to be
1448 considered attached, or if is to be considered to have been
1449 spawned by the stub. */
1451 attached
= remote_query_attached (pid
);
1453 if (gdbarch_has_global_solist (target_gdbarch
))
1455 /* If the target shares code across all inferiors, then every
1456 attach adds a new inferior. */
1457 inf
= add_inferior (pid
);
1459 /* ... and every inferior is bound to the same program space.
1460 However, each inferior may still have its own address
1462 inf
->aspace
= maybe_new_address_space ();
1463 inf
->pspace
= current_program_space
;
1467 /* In the traditional debugging scenario, there's a 1-1 match
1468 between program/address spaces. We simply bind the inferior
1469 to the program space's address space. */
1470 inf
= current_inferior ();
1471 inferior_appeared (inf
, pid
);
1474 inf
->attach_flag
= attached
;
1479 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1480 according to RUNNING. */
1483 remote_add_thread (ptid_t ptid
, int running
)
1487 set_executing (ptid
, running
);
1488 set_running (ptid
, running
);
1491 /* Come here when we learn about a thread id from the remote target.
1492 It may be the first time we hear about such thread, so take the
1493 opportunity to add it to GDB's thread list. In case this is the
1494 first time we're noticing its corresponding inferior, add it to
1495 GDB's inferior list as well. */
1498 remote_notice_new_inferior (ptid_t currthread
, int running
)
1500 /* If this is a new thread, add it to GDB's thread list.
1501 If we leave it up to WFI to do this, bad things will happen. */
1503 if (in_thread_list (currthread
) && is_exited (currthread
))
1505 /* We're seeing an event on a thread id we knew had exited.
1506 This has to be a new thread reusing the old id. Add it. */
1507 remote_add_thread (currthread
, running
);
1511 if (!in_thread_list (currthread
))
1513 struct inferior
*inf
= NULL
;
1514 int pid
= ptid_get_pid (currthread
);
1516 if (ptid_is_pid (inferior_ptid
)
1517 && pid
== ptid_get_pid (inferior_ptid
))
1519 /* inferior_ptid has no thread member yet. This can happen
1520 with the vAttach -> remote_wait,"TAAthread:" path if the
1521 stub doesn't support qC. This is the first stop reported
1522 after an attach, so this is the main thread. Update the
1523 ptid in the thread list. */
1524 if (in_thread_list (pid_to_ptid (pid
)))
1525 thread_change_ptid (inferior_ptid
, currthread
);
1528 remote_add_thread (currthread
, running
);
1529 inferior_ptid
= currthread
;
1534 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1536 /* inferior_ptid is not set yet. This can happen with the
1537 vRun -> remote_wait,"TAAthread:" path if the stub
1538 doesn't support qC. This is the first stop reported
1539 after an attach, so this is the main thread. Update the
1540 ptid in the thread list. */
1541 thread_change_ptid (inferior_ptid
, currthread
);
1545 /* When connecting to a target remote, or to a target
1546 extended-remote which already was debugging an inferior, we
1547 may not know about it yet. Add it before adding its child
1548 thread, so notifications are emitted in a sensible order. */
1549 if (!in_inferior_list (ptid_get_pid (currthread
)))
1550 inf
= remote_add_inferior (ptid_get_pid (currthread
), -1);
1552 /* This is really a new thread. Add it. */
1553 remote_add_thread (currthread
, running
);
1555 /* If we found a new inferior, let the common code do whatever
1556 it needs to with it (e.g., read shared libraries, insert
1559 notice_new_inferior (currthread
, running
, 0);
1563 /* Return the private thread data, creating it if necessary. */
1565 struct private_thread_info
*
1566 demand_private_info (ptid_t ptid
)
1568 struct thread_info
*info
= find_thread_ptid (ptid
);
1574 info
->private = xmalloc (sizeof (*(info
->private)));
1575 info
->private_dtor
= free_private_thread_info
;
1576 info
->private->core
= -1;
1577 info
->private->extra
= 0;
1580 return info
->private;
1583 /* Call this function as a result of
1584 1) A halt indication (T packet) containing a thread id
1585 2) A direct query of currthread
1586 3) Successful execution of set thread */
1589 record_currthread (ptid_t currthread
)
1591 general_thread
= currthread
;
1594 static char *last_pass_packet
;
1596 /* If 'QPassSignals' is supported, tell the remote stub what signals
1597 it can simply pass through to the inferior without reporting. */
1600 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1602 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1604 char *pass_packet
, *p
;
1607 gdb_assert (numsigs
< 256);
1608 for (i
= 0; i
< numsigs
; i
++)
1610 if (pass_signals
[i
])
1613 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1614 strcpy (pass_packet
, "QPassSignals:");
1615 p
= pass_packet
+ strlen (pass_packet
);
1616 for (i
= 0; i
< numsigs
; i
++)
1618 if (pass_signals
[i
])
1621 *p
++ = tohex (i
>> 4);
1622 *p
++ = tohex (i
& 15);
1631 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1633 struct remote_state
*rs
= get_remote_state ();
1634 char *buf
= rs
->buf
;
1636 putpkt (pass_packet
);
1637 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1638 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1639 if (last_pass_packet
)
1640 xfree (last_pass_packet
);
1641 last_pass_packet
= pass_packet
;
1644 xfree (pass_packet
);
1648 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1649 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1650 thread. If GEN is set, set the general thread, if not, then set
1651 the step/continue thread. */
1653 set_thread (struct ptid ptid
, int gen
)
1655 struct remote_state
*rs
= get_remote_state ();
1656 ptid_t state
= gen
? general_thread
: continue_thread
;
1657 char *buf
= rs
->buf
;
1658 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1660 if (ptid_equal (state
, ptid
))
1664 *buf
++ = gen
? 'g' : 'c';
1665 if (ptid_equal (ptid
, magic_null_ptid
))
1666 xsnprintf (buf
, endbuf
- buf
, "0");
1667 else if (ptid_equal (ptid
, any_thread_ptid
))
1668 xsnprintf (buf
, endbuf
- buf
, "0");
1669 else if (ptid_equal (ptid
, minus_one_ptid
))
1670 xsnprintf (buf
, endbuf
- buf
, "-1");
1672 write_ptid (buf
, endbuf
, ptid
);
1674 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1676 general_thread
= ptid
;
1678 continue_thread
= ptid
;
1682 set_general_thread (struct ptid ptid
)
1684 set_thread (ptid
, 1);
1688 set_continue_thread (struct ptid ptid
)
1690 set_thread (ptid
, 0);
1693 /* Change the remote current process. Which thread within the process
1694 ends up selected isn't important, as long as it is the same process
1695 as what INFERIOR_PTID points to.
1697 This comes from that fact that there is no explicit notion of
1698 "selected process" in the protocol. The selected process for
1699 general operations is the process the selected general thread
1703 set_general_process (void)
1705 struct remote_state
*rs
= get_remote_state ();
1707 /* If the remote can't handle multiple processes, don't bother. */
1708 if (!remote_multi_process_p (rs
))
1711 /* We only need to change the remote current thread if it's pointing
1712 at some other process. */
1713 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1714 set_general_thread (inferior_ptid
);
1718 /* Return nonzero if the thread PTID is still alive on the remote
1722 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1724 struct remote_state
*rs
= get_remote_state ();
1727 if (ptid_equal (ptid
, magic_null_ptid
))
1728 /* The main thread is always alive. */
1731 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1732 /* The main thread is always alive. This can happen after a
1733 vAttach, if the remote side doesn't support
1738 endp
= rs
->buf
+ get_remote_packet_size ();
1741 write_ptid (p
, endp
, ptid
);
1744 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1745 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1748 /* About these extended threadlist and threadinfo packets. They are
1749 variable length packets but, the fields within them are often fixed
1750 length. They are redundent enough to send over UDP as is the
1751 remote protocol in general. There is a matching unit test module
1754 #define OPAQUETHREADBYTES 8
1756 /* a 64 bit opaque identifier */
1757 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1759 /* WARNING: This threadref data structure comes from the remote O.S.,
1760 libstub protocol encoding, and remote.c. It is not particularly
1763 /* Right now, the internal structure is int. We want it to be bigger.
1764 Plan to fix this. */
1766 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1768 /* gdb_ext_thread_info is an internal GDB data structure which is
1769 equivalent to the reply of the remote threadinfo packet. */
1771 struct gdb_ext_thread_info
1773 threadref threadid
; /* External form of thread reference. */
1774 int active
; /* Has state interesting to GDB?
1776 char display
[256]; /* Brief state display, name,
1777 blocked/suspended. */
1778 char shortname
[32]; /* To be used to name threads. */
1779 char more_display
[256]; /* Long info, statistics, queue depth,
1783 /* The volume of remote transfers can be limited by submitting
1784 a mask containing bits specifying the desired information.
1785 Use a union of these values as the 'selection' parameter to
1786 get_thread_info. FIXME: Make these TAG names more thread specific. */
1788 #define TAG_THREADID 1
1789 #define TAG_EXISTS 2
1790 #define TAG_DISPLAY 4
1791 #define TAG_THREADNAME 8
1792 #define TAG_MOREDISPLAY 16
1794 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1796 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1798 static char *unpack_nibble (char *buf
, int *val
);
1800 static char *pack_nibble (char *buf
, int nibble
);
1802 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1804 static char *unpack_byte (char *buf
, int *value
);
1806 static char *pack_int (char *buf
, int value
);
1808 static char *unpack_int (char *buf
, int *value
);
1810 static char *unpack_string (char *src
, char *dest
, int length
);
1812 static char *pack_threadid (char *pkt
, threadref
*id
);
1814 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1816 void int_to_threadref (threadref
*id
, int value
);
1818 static int threadref_to_int (threadref
*ref
);
1820 static void copy_threadref (threadref
*dest
, threadref
*src
);
1822 static int threadmatch (threadref
*dest
, threadref
*src
);
1824 static char *pack_threadinfo_request (char *pkt
, int mode
,
1827 static int remote_unpack_thread_info_response (char *pkt
,
1828 threadref
*expectedref
,
1829 struct gdb_ext_thread_info
1833 static int remote_get_threadinfo (threadref
*threadid
,
1834 int fieldset
, /*TAG mask */
1835 struct gdb_ext_thread_info
*info
);
1837 static char *pack_threadlist_request (char *pkt
, int startflag
,
1839 threadref
*nextthread
);
1841 static int parse_threadlist_response (char *pkt
,
1843 threadref
*original_echo
,
1844 threadref
*resultlist
,
1847 static int remote_get_threadlist (int startflag
,
1848 threadref
*nextthread
,
1852 threadref
*threadlist
);
1854 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1856 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1857 void *context
, int looplimit
);
1859 static int remote_newthread_step (threadref
*ref
, void *context
);
1862 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1863 buffer we're allowed to write to. Returns
1864 BUF+CHARACTERS_WRITTEN. */
1867 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1870 struct remote_state
*rs
= get_remote_state ();
1872 if (remote_multi_process_p (rs
))
1874 pid
= ptid_get_pid (ptid
);
1876 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1878 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1880 tid
= ptid_get_tid (ptid
);
1882 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1884 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1889 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1890 passed the last parsed char. Returns null_ptid on error. */
1893 read_ptid (char *buf
, char **obuf
)
1897 ULONGEST pid
= 0, tid
= 0;
1901 /* Multi-process ptid. */
1902 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1904 error (_("invalid remote ptid: %s"), p
);
1907 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1910 return ptid_build (pid
, 0, tid
);
1913 /* No multi-process. Just a tid. */
1914 pp
= unpack_varlen_hex (p
, &tid
);
1916 /* Since the stub is not sending a process id, then default to
1917 what's in inferior_ptid, unless it's null at this point. If so,
1918 then since there's no way to know the pid of the reported
1919 threads, use the magic number. */
1920 if (ptid_equal (inferior_ptid
, null_ptid
))
1921 pid
= ptid_get_pid (magic_null_ptid
);
1923 pid
= ptid_get_pid (inferior_ptid
);
1927 return ptid_build (pid
, 0, tid
);
1930 /* Encode 64 bits in 16 chars of hex. */
1932 static const char hexchars
[] = "0123456789abcdef";
1935 ishex (int ch
, int *val
)
1937 if ((ch
>= 'a') && (ch
<= 'f'))
1939 *val
= ch
- 'a' + 10;
1942 if ((ch
>= 'A') && (ch
<= 'F'))
1944 *val
= ch
- 'A' + 10;
1947 if ((ch
>= '0') && (ch
<= '9'))
1958 if (ch
>= 'a' && ch
<= 'f')
1959 return ch
- 'a' + 10;
1960 if (ch
>= '0' && ch
<= '9')
1962 if (ch
>= 'A' && ch
<= 'F')
1963 return ch
- 'A' + 10;
1968 stub_unpack_int (char *buff
, int fieldlength
)
1975 nibble
= stubhex (*buff
++);
1979 retval
= retval
<< 4;
1985 unpack_varlen_hex (char *buff
, /* packet to parse */
1989 ULONGEST retval
= 0;
1991 while (ishex (*buff
, &nibble
))
1994 retval
= retval
<< 4;
1995 retval
|= nibble
& 0x0f;
2002 unpack_nibble (char *buf
, int *val
)
2004 *val
= fromhex (*buf
++);
2009 pack_nibble (char *buf
, int nibble
)
2011 *buf
++ = hexchars
[(nibble
& 0x0f)];
2016 pack_hex_byte (char *pkt
, int byte
)
2018 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2019 *pkt
++ = hexchars
[(byte
& 0xf)];
2024 unpack_byte (char *buf
, int *value
)
2026 *value
= stub_unpack_int (buf
, 2);
2031 pack_int (char *buf
, int value
)
2033 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2034 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2035 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2036 buf
= pack_hex_byte (buf
, (value
& 0xff));
2041 unpack_int (char *buf
, int *value
)
2043 *value
= stub_unpack_int (buf
, 8);
2047 #if 0 /* Currently unused, uncomment when needed. */
2048 static char *pack_string (char *pkt
, char *string
);
2051 pack_string (char *pkt
, char *string
)
2056 len
= strlen (string
);
2058 len
= 200; /* Bigger than most GDB packets, junk??? */
2059 pkt
= pack_hex_byte (pkt
, len
);
2063 if ((ch
== '\0') || (ch
== '#'))
2064 ch
= '*'; /* Protect encapsulation. */
2069 #endif /* 0 (unused) */
2072 unpack_string (char *src
, char *dest
, int length
)
2081 pack_threadid (char *pkt
, threadref
*id
)
2084 unsigned char *altid
;
2086 altid
= (unsigned char *) id
;
2087 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2089 pkt
= pack_hex_byte (pkt
, *altid
++);
2095 unpack_threadid (char *inbuf
, threadref
*id
)
2098 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2101 altref
= (char *) id
;
2103 while (inbuf
< limit
)
2105 x
= stubhex (*inbuf
++);
2106 y
= stubhex (*inbuf
++);
2107 *altref
++ = (x
<< 4) | y
;
2112 /* Externally, threadrefs are 64 bits but internally, they are still
2113 ints. This is due to a mismatch of specifications. We would like
2114 to use 64bit thread references internally. This is an adapter
2118 int_to_threadref (threadref
*id
, int value
)
2120 unsigned char *scan
;
2122 scan
= (unsigned char *) id
;
2128 *scan
++ = (value
>> 24) & 0xff;
2129 *scan
++ = (value
>> 16) & 0xff;
2130 *scan
++ = (value
>> 8) & 0xff;
2131 *scan
++ = (value
& 0xff);
2135 threadref_to_int (threadref
*ref
)
2138 unsigned char *scan
;
2144 value
= (value
<< 8) | ((*scan
++) & 0xff);
2149 copy_threadref (threadref
*dest
, threadref
*src
)
2152 unsigned char *csrc
, *cdest
;
2154 csrc
= (unsigned char *) src
;
2155 cdest
= (unsigned char *) dest
;
2162 threadmatch (threadref
*dest
, threadref
*src
)
2164 /* Things are broken right now, so just assume we got a match. */
2166 unsigned char *srcp
, *destp
;
2168 srcp
= (char *) src
;
2169 destp
= (char *) dest
;
2173 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2180 threadid:1, # always request threadid
2187 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2190 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2192 *pkt
++ = 'q'; /* Info Query */
2193 *pkt
++ = 'P'; /* process or thread info */
2194 pkt
= pack_int (pkt
, mode
); /* mode */
2195 pkt
= pack_threadid (pkt
, id
); /* threadid */
2196 *pkt
= '\0'; /* terminate */
2200 /* These values tag the fields in a thread info response packet. */
2201 /* Tagging the fields allows us to request specific fields and to
2202 add more fields as time goes by. */
2204 #define TAG_THREADID 1 /* Echo the thread identifier. */
2205 #define TAG_EXISTS 2 /* Is this process defined enough to
2206 fetch registers and its stack? */
2207 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2208 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2209 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2213 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2214 struct gdb_ext_thread_info
*info
)
2216 struct remote_state
*rs
= get_remote_state ();
2220 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2223 /* info->threadid = 0; FIXME: implement zero_threadref. */
2225 info
->display
[0] = '\0';
2226 info
->shortname
[0] = '\0';
2227 info
->more_display
[0] = '\0';
2229 /* Assume the characters indicating the packet type have been
2231 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2232 pkt
= unpack_threadid (pkt
, &ref
);
2235 warning (_("Incomplete response to threadinfo request."));
2236 if (!threadmatch (&ref
, expectedref
))
2237 { /* This is an answer to a different request. */
2238 warning (_("ERROR RMT Thread info mismatch."));
2241 copy_threadref (&info
->threadid
, &ref
);
2243 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2245 /* Packets are terminated with nulls. */
2246 while ((pkt
< limit
) && mask
&& *pkt
)
2248 pkt
= unpack_int (pkt
, &tag
); /* tag */
2249 pkt
= unpack_byte (pkt
, &length
); /* length */
2250 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2252 warning (_("ERROR RMT: threadinfo tag mismatch."));
2256 if (tag
== TAG_THREADID
)
2260 warning (_("ERROR RMT: length of threadid is not 16."));
2264 pkt
= unpack_threadid (pkt
, &ref
);
2265 mask
= mask
& ~TAG_THREADID
;
2268 if (tag
== TAG_EXISTS
)
2270 info
->active
= stub_unpack_int (pkt
, length
);
2272 mask
= mask
& ~(TAG_EXISTS
);
2275 warning (_("ERROR RMT: 'exists' length too long."));
2281 if (tag
== TAG_THREADNAME
)
2283 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2284 mask
= mask
& ~TAG_THREADNAME
;
2287 if (tag
== TAG_DISPLAY
)
2289 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2290 mask
= mask
& ~TAG_DISPLAY
;
2293 if (tag
== TAG_MOREDISPLAY
)
2295 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2296 mask
= mask
& ~TAG_MOREDISPLAY
;
2299 warning (_("ERROR RMT: unknown thread info tag."));
2300 break; /* Not a tag we know about. */
2306 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2307 struct gdb_ext_thread_info
*info
)
2309 struct remote_state
*rs
= get_remote_state ();
2312 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2314 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2316 if (rs
->buf
[0] == '\0')
2319 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2324 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2327 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2328 threadref
*nextthread
)
2330 *pkt
++ = 'q'; /* info query packet */
2331 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2332 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2333 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2334 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2339 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2342 parse_threadlist_response (char *pkt
, int result_limit
,
2343 threadref
*original_echo
, threadref
*resultlist
,
2346 struct remote_state
*rs
= get_remote_state ();
2348 int count
, resultcount
, done
;
2351 /* Assume the 'q' and 'M chars have been stripped. */
2352 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2353 /* done parse past here */
2354 pkt
= unpack_byte (pkt
, &count
); /* count field */
2355 pkt
= unpack_nibble (pkt
, &done
);
2356 /* The first threadid is the argument threadid. */
2357 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2358 while ((count
-- > 0) && (pkt
< limit
))
2360 pkt
= unpack_threadid (pkt
, resultlist
++);
2361 if (resultcount
++ >= result_limit
)
2370 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2371 int *done
, int *result_count
, threadref
*threadlist
)
2373 struct remote_state
*rs
= get_remote_state ();
2374 static threadref echo_nextthread
;
2377 /* Trancate result limit to be smaller than the packet size. */
2378 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2379 >= get_remote_packet_size ())
2380 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2382 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2384 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2386 if (*rs
->buf
== '\0')
2390 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2393 if (!threadmatch (&echo_nextthread
, nextthread
))
2395 /* FIXME: This is a good reason to drop the packet. */
2396 /* Possably, there is a duplicate response. */
2398 retransmit immediatly - race conditions
2399 retransmit after timeout - yes
2401 wait for packet, then exit
2403 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2404 return 0; /* I choose simply exiting. */
2406 if (*result_count
<= 0)
2410 warning (_("RMT ERROR : failed to get remote thread list."));
2413 return result
; /* break; */
2415 if (*result_count
> result_limit
)
2418 warning (_("RMT ERROR: threadlist response longer than requested."));
2424 /* This is the interface between remote and threads, remotes upper
2427 /* remote_find_new_threads retrieves the thread list and for each
2428 thread in the list, looks up the thread in GDB's internal list,
2429 adding the thread if it does not already exist. This involves
2430 getting partial thread lists from the remote target so, polling the
2431 quit_flag is required. */
2434 /* About this many threadisds fit in a packet. */
2436 #define MAXTHREADLISTRESULTS 32
2439 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2442 int done
, i
, result_count
;
2446 static threadref nextthread
;
2447 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2452 if (loopcount
++ > looplimit
)
2455 warning (_("Remote fetch threadlist -infinite loop-."));
2458 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2459 &done
, &result_count
, resultthreadlist
))
2464 /* Clear for later iterations. */
2466 /* Setup to resume next batch of thread references, set nextthread. */
2467 if (result_count
>= 1)
2468 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2470 while (result_count
--)
2471 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2478 remote_newthread_step (threadref
*ref
, void *context
)
2480 int pid
= ptid_get_pid (inferior_ptid
);
2481 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2483 if (!in_thread_list (ptid
))
2485 return 1; /* continue iterator */
2488 #define CRAZY_MAX_THREADS 1000
2491 remote_current_thread (ptid_t oldpid
)
2493 struct remote_state
*rs
= get_remote_state ();
2496 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2497 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2498 return read_ptid (&rs
->buf
[2], NULL
);
2503 /* Find new threads for info threads command.
2504 * Original version, using John Metzler's thread protocol.
2508 remote_find_new_threads (void)
2510 remote_threadlist_iterator (remote_newthread_step
, 0,
2514 #if defined(HAVE_LIBEXPAT)
2516 typedef struct thread_item
2522 DEF_VEC_O(thread_item_t
);
2524 struct threads_parsing_context
2526 VEC (thread_item_t
) *items
;
2530 start_thread (struct gdb_xml_parser
*parser
,
2531 const struct gdb_xml_element
*element
,
2532 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2534 struct threads_parsing_context
*data
= user_data
;
2536 struct thread_item item
;
2538 struct gdb_xml_value
*attr
;
2540 id
= xml_find_attribute (attributes
, "id")->value
;
2541 item
.ptid
= read_ptid (id
, NULL
);
2543 attr
= xml_find_attribute (attributes
, "core");
2545 item
.core
= *(ULONGEST
*) attr
->value
;
2551 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2555 end_thread (struct gdb_xml_parser
*parser
,
2556 const struct gdb_xml_element
*element
,
2557 void *user_data
, const char *body_text
)
2559 struct threads_parsing_context
*data
= user_data
;
2561 if (body_text
&& *body_text
)
2562 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2565 const struct gdb_xml_attribute thread_attributes
[] = {
2566 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2567 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2568 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2571 const struct gdb_xml_element thread_children
[] = {
2572 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2575 const struct gdb_xml_element threads_children
[] = {
2576 { "thread", thread_attributes
, thread_children
,
2577 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2578 start_thread
, end_thread
},
2579 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2582 const struct gdb_xml_element threads_elements
[] = {
2583 { "threads", NULL
, threads_children
,
2584 GDB_XML_EF_NONE
, NULL
, NULL
},
2585 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2588 /* Discard the contents of the constructed thread info context. */
2591 clear_threads_parsing_context (void *p
)
2593 struct threads_parsing_context
*context
= p
;
2595 struct thread_item
*item
;
2597 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2598 xfree (item
->extra
);
2600 VEC_free (thread_item_t
, context
->items
);
2606 * Find all threads for info threads command.
2607 * Uses new thread protocol contributed by Cisco.
2608 * Falls back and attempts to use the older method (above)
2609 * if the target doesn't respond to the new method.
2613 remote_threads_info (struct target_ops
*ops
)
2615 struct remote_state
*rs
= get_remote_state ();
2619 if (remote_desc
== 0) /* paranoia */
2620 error (_("Command can only be used when connected to the remote target."));
2622 #if defined(HAVE_LIBEXPAT)
2623 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2625 char *xml
= target_read_stralloc (¤t_target
,
2626 TARGET_OBJECT_THREADS
, NULL
);
2628 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2632 struct threads_parsing_context context
;
2634 context
.items
= NULL
;
2635 make_cleanup (clear_threads_parsing_context
, &context
);
2637 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2638 threads_elements
, xml
, &context
) == 0)
2641 struct thread_item
*item
;
2644 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2647 if (!ptid_equal (item
->ptid
, null_ptid
))
2649 struct private_thread_info
*info
;
2650 /* In non-stop mode, we assume new found threads
2651 are running until proven otherwise with a
2652 stop reply. In all-stop, we can only get
2653 here if all threads are stopped. */
2654 int running
= non_stop
? 1 : 0;
2656 remote_notice_new_inferior (item
->ptid
, running
);
2658 info
= demand_private_info (item
->ptid
);
2659 info
->core
= item
->core
;
2660 info
->extra
= item
->extra
;
2667 do_cleanups (back_to
);
2672 if (use_threadinfo_query
)
2674 putpkt ("qfThreadInfo");
2675 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2677 if (bufp
[0] != '\0') /* q packet recognized */
2679 while (*bufp
++ == 'm') /* reply contains one or more TID */
2683 new_thread
= read_ptid (bufp
, &bufp
);
2684 if (!ptid_equal (new_thread
, null_ptid
))
2686 /* In non-stop mode, we assume new found threads
2687 are running until proven otherwise with a
2688 stop reply. In all-stop, we can only get
2689 here if all threads are stopped. */
2690 int running
= non_stop
? 1 : 0;
2692 remote_notice_new_inferior (new_thread
, running
);
2695 while (*bufp
++ == ','); /* comma-separated list */
2696 putpkt ("qsThreadInfo");
2697 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2704 /* Only qfThreadInfo is supported in non-stop mode. */
2708 /* Else fall back to old method based on jmetzler protocol. */
2709 use_threadinfo_query
= 0;
2710 remote_find_new_threads ();
2715 * Collect a descriptive string about the given thread.
2716 * The target may say anything it wants to about the thread
2717 * (typically info about its blocked / runnable state, name, etc.).
2718 * This string will appear in the info threads display.
2720 * Optional: targets are not required to implement this function.
2724 remote_threads_extra_info (struct thread_info
*tp
)
2726 struct remote_state
*rs
= get_remote_state ();
2730 struct gdb_ext_thread_info threadinfo
;
2731 static char display_buf
[100]; /* arbitrary... */
2732 int n
= 0; /* position in display_buf */
2734 if (remote_desc
== 0) /* paranoia */
2735 internal_error (__FILE__
, __LINE__
,
2736 _("remote_threads_extra_info"));
2738 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2739 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2740 /* This is the main thread which was added by GDB. The remote
2741 server doesn't know about it. */
2744 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2746 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2748 if (info
&& info
->private)
2749 return info
->private->extra
;
2754 if (use_threadextra_query
)
2757 char *endb
= rs
->buf
+ get_remote_packet_size ();
2759 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2761 write_ptid (b
, endb
, tp
->ptid
);
2764 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2765 if (rs
->buf
[0] != 0)
2767 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2768 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2769 display_buf
[result
] = '\0';
2774 /* If the above query fails, fall back to the old method. */
2775 use_threadextra_query
= 0;
2776 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2777 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2778 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2779 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2780 if (threadinfo
.active
)
2782 if (*threadinfo
.shortname
)
2783 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2784 " Name: %s,", threadinfo
.shortname
);
2785 if (*threadinfo
.display
)
2786 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2787 " State: %s,", threadinfo
.display
);
2788 if (*threadinfo
.more_display
)
2789 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2790 " Priority: %s", threadinfo
.more_display
);
2794 /* For purely cosmetic reasons, clear up trailing commas. */
2795 if (',' == display_buf
[n
-1])
2796 display_buf
[n
-1] = ' ';
2805 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2806 struct static_tracepoint_marker
*marker
)
2808 struct remote_state
*rs
= get_remote_state ();
2811 sprintf (p
, "qTSTMat:");
2813 p
+= hexnumstr (p
, addr
);
2815 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2819 error (_("Remote failure reply: %s"), p
);
2823 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2831 free_current_marker (void *arg
)
2833 struct static_tracepoint_marker
**marker_p
= arg
;
2835 if (*marker_p
!= NULL
)
2837 release_static_tracepoint_marker (*marker_p
);
2844 static VEC(static_tracepoint_marker_p
) *
2845 remote_static_tracepoint_markers_by_strid (const char *strid
)
2847 struct remote_state
*rs
= get_remote_state ();
2848 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2849 struct static_tracepoint_marker
*marker
= NULL
;
2850 struct cleanup
*old_chain
;
2853 /* Ask for a first packet of static tracepoint marker
2856 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2859 error (_("Remote failure reply: %s"), p
);
2861 old_chain
= make_cleanup (free_current_marker
, &marker
);
2866 marker
= XCNEW (struct static_tracepoint_marker
);
2870 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2872 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2874 VEC_safe_push (static_tracepoint_marker_p
,
2880 release_static_tracepoint_marker (marker
);
2881 memset (marker
, 0, sizeof (*marker
));
2884 while (*p
++ == ','); /* comma-separated list */
2885 /* Ask for another packet of static tracepoint definition. */
2887 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2891 do_cleanups (old_chain
);
2896 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2899 remote_get_ada_task_ptid (long lwp
, long thread
)
2901 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2905 /* Restart the remote side; this is an extended protocol operation. */
2908 extended_remote_restart (void)
2910 struct remote_state
*rs
= get_remote_state ();
2912 /* Send the restart command; for reasons I don't understand the
2913 remote side really expects a number after the "R". */
2914 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2917 remote_fileio_reset ();
2920 /* Clean up connection to a remote debugger. */
2923 remote_close (int quitting
)
2925 if (remote_desc
== NULL
)
2926 return; /* already closed */
2928 /* Make sure we leave stdin registered in the event loop, and we
2929 don't leave the async SIGINT signal handler installed. */
2930 remote_terminal_ours ();
2932 serial_close (remote_desc
);
2935 /* We don't have a connection to the remote stub anymore. Get rid
2936 of all the inferiors and their threads we were controlling.
2937 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
2938 will be unable to find the thread corresponding to (pid, 0, 0). */
2939 inferior_ptid
= null_ptid
;
2940 discard_all_inferiors ();
2942 /* We're no longer interested in any of these events. */
2943 discard_pending_stop_replies (-1);
2945 if (remote_async_inferior_event_token
)
2946 delete_async_event_handler (&remote_async_inferior_event_token
);
2947 if (remote_async_get_pending_events_token
)
2948 delete_async_event_handler (&remote_async_get_pending_events_token
);
2951 /* Query the remote side for the text, data and bss offsets. */
2956 struct remote_state
*rs
= get_remote_state ();
2959 int lose
, num_segments
= 0, do_sections
, do_segments
;
2960 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2961 struct section_offsets
*offs
;
2962 struct symfile_segment_data
*data
;
2964 if (symfile_objfile
== NULL
)
2967 putpkt ("qOffsets");
2968 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2971 if (buf
[0] == '\000')
2972 return; /* Return silently. Stub doesn't support
2976 warning (_("Remote failure reply: %s"), buf
);
2980 /* Pick up each field in turn. This used to be done with scanf, but
2981 scanf will make trouble if CORE_ADDR size doesn't match
2982 conversion directives correctly. The following code will work
2983 with any size of CORE_ADDR. */
2984 text_addr
= data_addr
= bss_addr
= 0;
2988 if (strncmp (ptr
, "Text=", 5) == 0)
2991 /* Don't use strtol, could lose on big values. */
2992 while (*ptr
&& *ptr
!= ';')
2993 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2995 if (strncmp (ptr
, ";Data=", 6) == 0)
2998 while (*ptr
&& *ptr
!= ';')
2999 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3004 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3007 while (*ptr
&& *ptr
!= ';')
3008 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3010 if (bss_addr
!= data_addr
)
3011 warning (_("Target reported unsupported offsets: %s"), buf
);
3016 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3019 /* Don't use strtol, could lose on big values. */
3020 while (*ptr
&& *ptr
!= ';')
3021 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3024 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3027 while (*ptr
&& *ptr
!= ';')
3028 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3036 error (_("Malformed response to offset query, %s"), buf
);
3037 else if (*ptr
!= '\0')
3038 warning (_("Target reported unsupported offsets: %s"), buf
);
3040 offs
= ((struct section_offsets
*)
3041 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3042 memcpy (offs
, symfile_objfile
->section_offsets
,
3043 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3045 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3046 do_segments
= (data
!= NULL
);
3047 do_sections
= num_segments
== 0;
3049 if (num_segments
> 0)
3051 segments
[0] = text_addr
;
3052 segments
[1] = data_addr
;
3054 /* If we have two segments, we can still try to relocate everything
3055 by assuming that the .text and .data offsets apply to the whole
3056 text and data segments. Convert the offsets given in the packet
3057 to base addresses for symfile_map_offsets_to_segments. */
3058 else if (data
&& data
->num_segments
== 2)
3060 segments
[0] = data
->segment_bases
[0] + text_addr
;
3061 segments
[1] = data
->segment_bases
[1] + data_addr
;
3064 /* If the object file has only one segment, assume that it is text
3065 rather than data; main programs with no writable data are rare,
3066 but programs with no code are useless. Of course the code might
3067 have ended up in the data segment... to detect that we would need
3068 the permissions here. */
3069 else if (data
&& data
->num_segments
== 1)
3071 segments
[0] = data
->segment_bases
[0] + text_addr
;
3074 /* There's no way to relocate by segment. */
3080 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3081 offs
, num_segments
, segments
);
3083 if (ret
== 0 && !do_sections
)
3084 error (_("Can not handle qOffsets TextSeg "
3085 "response with this symbol file"));
3092 free_symfile_segment_data (data
);
3096 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3098 /* This is a temporary kludge to force data and bss to use the
3099 same offsets because that's what nlmconv does now. The real
3100 solution requires changes to the stub and remote.c that I
3101 don't have time to do right now. */
3103 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3104 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3107 objfile_relocate (symfile_objfile
, offs
);
3110 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3111 threads we know are stopped already. This is used during the
3112 initial remote connection in non-stop mode --- threads that are
3113 reported as already being stopped are left stopped. */
3116 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3118 /* If we have a stop reply for this thread, it must be stopped. */
3119 if (peek_stop_reply (thread
->ptid
))
3120 set_stop_requested (thread
->ptid
, 1);
3125 /* Send interrupt_sequence to remote target. */
3127 send_interrupt_sequence (void)
3129 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3130 serial_write (remote_desc
, "\x03", 1);
3131 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3132 serial_send_break (remote_desc
);
3133 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3135 serial_send_break (remote_desc
);
3136 serial_write (remote_desc
, "g", 1);
3139 internal_error (__FILE__
, __LINE__
,
3140 _("Invalid value for interrupt_sequence_mode: %s."),
3141 interrupt_sequence_mode
);
3145 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3147 struct remote_state
*rs
= get_remote_state ();
3148 struct packet_config
*noack_config
;
3149 char *wait_status
= NULL
;
3151 immediate_quit
++; /* Allow user to interrupt it. */
3153 if (interrupt_on_connect
)
3154 send_interrupt_sequence ();
3156 /* Ack any packet which the remote side has already sent. */
3157 serial_write (remote_desc
, "+", 1);
3159 /* The first packet we send to the target is the optional "supported
3160 packets" request. If the target can answer this, it will tell us
3161 which later probes to skip. */
3162 remote_query_supported ();
3164 /* If the stub wants to get a QAllow, compose one and send it. */
3165 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3166 remote_set_permissions ();
3168 /* Next, we possibly activate noack mode.
3170 If the QStartNoAckMode packet configuration is set to AUTO,
3171 enable noack mode if the stub reported a wish for it with
3174 If set to TRUE, then enable noack mode even if the stub didn't
3175 report it in qSupported. If the stub doesn't reply OK, the
3176 session ends with an error.
3178 If FALSE, then don't activate noack mode, regardless of what the
3179 stub claimed should be the default with qSupported. */
3181 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3183 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3184 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3185 && noack_config
->support
== PACKET_ENABLE
))
3187 putpkt ("QStartNoAckMode");
3188 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3189 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3195 /* Tell the remote that we are using the extended protocol. */
3197 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3200 /* Next, if the target can specify a description, read it. We do
3201 this before anything involving memory or registers. */
3202 target_find_description ();
3204 /* Next, now that we know something about the target, update the
3205 address spaces in the program spaces. */
3206 update_address_spaces ();
3208 /* On OSs where the list of libraries is global to all
3209 processes, we fetch them early. */
3210 if (gdbarch_has_global_solist (target_gdbarch
))
3211 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3215 if (!rs
->non_stop_aware
)
3216 error (_("Non-stop mode requested, but remote "
3217 "does not support non-stop"));
3219 putpkt ("QNonStop:1");
3220 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3222 if (strcmp (rs
->buf
, "OK") != 0)
3223 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3225 /* Find about threads and processes the stub is already
3226 controlling. We default to adding them in the running state.
3227 The '?' query below will then tell us about which threads are
3229 remote_threads_info (target
);
3231 else if (rs
->non_stop_aware
)
3233 /* Don't assume that the stub can operate in all-stop mode.
3234 Request it explicitely. */
3235 putpkt ("QNonStop:0");
3236 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3238 if (strcmp (rs
->buf
, "OK") != 0)
3239 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3242 /* Check whether the target is running now. */
3244 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3248 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3251 error (_("The target is not running (try extended-remote?)"));
3253 /* We're connected, but not running. Drop out before we
3254 call start_remote. */
3259 /* Save the reply for later. */
3260 wait_status
= alloca (strlen (rs
->buf
) + 1);
3261 strcpy (wait_status
, rs
->buf
);
3264 /* Let the stub know that we want it to return the thread. */
3265 set_continue_thread (minus_one_ptid
);
3267 /* Without this, some commands which require an active target
3268 (such as kill) won't work. This variable serves (at least)
3269 double duty as both the pid of the target process (if it has
3270 such), and as a flag indicating that a target is active.
3271 These functions should be split out into seperate variables,
3272 especially since GDB will someday have a notion of debugging
3273 several processes. */
3274 inferior_ptid
= magic_null_ptid
;
3276 /* Now, if we have thread information, update inferior_ptid. */
3277 inferior_ptid
= remote_current_thread (inferior_ptid
);
3279 remote_add_inferior (ptid_get_pid (inferior_ptid
), -1);
3281 /* Always add the main thread. */
3282 add_thread_silent (inferior_ptid
);
3284 /* init_wait_for_inferior should be called before get_offsets in order
3285 to manage `inserted' flag in bp loc in a correct state.
3286 breakpoint_init_inferior, called from init_wait_for_inferior, set
3287 `inserted' flag to 0, while before breakpoint_re_set, called from
3288 start_remote, set `inserted' flag to 1. In the initialization of
3289 inferior, breakpoint_init_inferior should be called first, and then
3290 breakpoint_re_set can be called. If this order is broken, state of
3291 `inserted' flag is wrong, and cause some problems on breakpoint
3293 init_wait_for_inferior ();
3295 get_offsets (); /* Get text, data & bss offsets. */
3297 /* If we could not find a description using qXfer, and we know
3298 how to do it some other way, try again. This is not
3299 supported for non-stop; it could be, but it is tricky if
3300 there are no stopped threads when we connect. */
3301 if (remote_read_description_p (target
)
3302 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3304 target_clear_description ();
3305 target_find_description ();
3308 /* Use the previously fetched status. */
3309 gdb_assert (wait_status
!= NULL
);
3310 strcpy (rs
->buf
, wait_status
);
3311 rs
->cached_wait_status
= 1;
3314 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3318 /* Clear WFI global state. Do this before finding about new
3319 threads and inferiors, and setting the current inferior.
3320 Otherwise we would clear the proceed status of the current
3321 inferior when we want its stop_soon state to be preserved
3322 (see notice_new_inferior). */
3323 init_wait_for_inferior ();
3325 /* In non-stop, we will either get an "OK", meaning that there
3326 are no stopped threads at this time; or, a regular stop
3327 reply. In the latter case, there may be more than one thread
3328 stopped --- we pull them all out using the vStopped
3330 if (strcmp (rs
->buf
, "OK") != 0)
3332 struct stop_reply
*stop_reply
;
3333 struct cleanup
*old_chain
;
3335 stop_reply
= stop_reply_xmalloc ();
3336 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3338 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3339 discard_cleanups (old_chain
);
3341 /* get_pending_stop_replies acks this one, and gets the rest
3343 pending_stop_reply
= stop_reply
;
3344 remote_get_pending_stop_replies ();
3346 /* Make sure that threads that were stopped remain
3348 iterate_over_threads (set_stop_requested_callback
, NULL
);
3351 if (target_can_async_p ())
3352 target_async (inferior_event_handler
, 0);
3354 if (thread_count () == 0)
3357 error (_("The target is not running (try extended-remote?)"));
3359 /* We're connected, but not running. Drop out before we
3360 call start_remote. */
3364 /* Let the stub know that we want it to return the thread. */
3366 /* Force the stub to choose a thread. */
3367 set_general_thread (null_ptid
);
3370 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3371 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3372 error (_("remote didn't report the current thread in non-stop mode"));
3374 get_offsets (); /* Get text, data & bss offsets. */
3376 /* In non-stop mode, any cached wait status will be stored in
3377 the stop reply queue. */
3378 gdb_assert (wait_status
== NULL
);
3380 /* Report all signals during attach/startup. */
3381 remote_pass_signals (0, NULL
);
3384 /* If we connected to a live target, do some additional setup. */
3385 if (target_has_execution
)
3387 if (exec_bfd
) /* No use without an exec file. */
3388 remote_check_symbols (symfile_objfile
);
3391 /* Possibly the target has been engaged in a trace run started
3392 previously; find out where things are at. */
3393 if (remote_get_trace_status (current_trace_status ()) != -1)
3395 struct uploaded_tp
*uploaded_tps
= NULL
;
3396 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3398 if (current_trace_status ()->running
)
3399 printf_filtered (_("Trace is already running on the target.\n"));
3401 /* Get trace state variables first, they may be checked when
3402 parsing uploaded commands. */
3404 remote_upload_trace_state_variables (&uploaded_tsvs
);
3406 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3408 remote_upload_tracepoints (&uploaded_tps
);
3410 merge_uploaded_tracepoints (&uploaded_tps
);
3413 /* If breakpoints are global, insert them now. */
3414 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3415 && breakpoints_always_inserted_mode ())
3416 insert_breakpoints ();
3419 /* Open a connection to a remote debugger.
3420 NAME is the filename used for communication. */
3423 remote_open (char *name
, int from_tty
)
3425 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3428 /* Open a connection to a remote debugger using the extended
3429 remote gdb protocol. NAME is the filename used for communication. */
3432 extended_remote_open (char *name
, int from_tty
)
3434 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3437 /* Generic code for opening a connection to a remote target. */
3440 init_all_packet_configs (void)
3444 for (i
= 0; i
< PACKET_MAX
; i
++)
3445 update_packet_config (&remote_protocol_packets
[i
]);
3448 /* Symbol look-up. */
3451 remote_check_symbols (struct objfile
*objfile
)
3453 struct remote_state
*rs
= get_remote_state ();
3454 char *msg
, *reply
, *tmp
;
3455 struct minimal_symbol
*sym
;
3458 /* The remote side has no concept of inferiors that aren't running
3459 yet, it only knows about running processes. If we're connected
3460 but our current inferior is not running, we should not invite the
3461 remote target to request symbol lookups related to its
3462 (unrelated) current process. */
3463 if (!target_has_execution
)
3466 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3469 /* Make sure the remote is pointing at the right process. Note
3470 there's no way to select "no process". */
3471 set_general_process ();
3473 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3474 because we need both at the same time. */
3475 msg
= alloca (get_remote_packet_size ());
3477 /* Invite target to request symbol lookups. */
3479 putpkt ("qSymbol::");
3480 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3481 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3484 while (strncmp (reply
, "qSymbol:", 8) == 0)
3487 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3489 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3491 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3494 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3495 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3497 /* If this is a function address, return the start of code
3498 instead of any data function descriptor. */
3499 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3503 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3504 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3508 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3513 static struct serial
*
3514 remote_serial_open (char *name
)
3516 static int udp_warning
= 0;
3518 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3519 of in ser-tcp.c, because it is the remote protocol assuming that the
3520 serial connection is reliable and not the serial connection promising
3522 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3524 warning (_("The remote protocol may be unreliable over UDP.\n"
3525 "Some events may be lost, rendering further debugging "
3530 return serial_open (name
);
3533 /* Inform the target of our permission settings. The permission flags
3534 work without this, but if the target knows the settings, it can do
3535 a couple things. First, it can add its own check, to catch cases
3536 that somehow manage to get by the permissions checks in target
3537 methods. Second, if the target is wired to disallow particular
3538 settings (for instance, a system in the field that is not set up to
3539 be able to stop at a breakpoint), it can object to any unavailable
3543 remote_set_permissions (void)
3545 struct remote_state
*rs
= get_remote_state ();
3547 sprintf (rs
->buf
, "QAllow:"
3548 "WriteReg:%x;WriteMem:%x;"
3549 "InsertBreak:%x;InsertTrace:%x;"
3550 "InsertFastTrace:%x;Stop:%x",
3551 may_write_registers
, may_write_memory
,
3552 may_insert_breakpoints
, may_insert_tracepoints
,
3553 may_insert_fast_tracepoints
, may_stop
);
3555 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3557 /* If the target didn't like the packet, warn the user. Do not try
3558 to undo the user's settings, that would just be maddening. */
3559 if (strcmp (rs
->buf
, "OK") != 0)
3560 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3563 /* This type describes each known response to the qSupported
3565 struct protocol_feature
3567 /* The name of this protocol feature. */
3570 /* The default for this protocol feature. */
3571 enum packet_support default_support
;
3573 /* The function to call when this feature is reported, or after
3574 qSupported processing if the feature is not supported.
3575 The first argument points to this structure. The second
3576 argument indicates whether the packet requested support be
3577 enabled, disabled, or probed (or the default, if this function
3578 is being called at the end of processing and this feature was
3579 not reported). The third argument may be NULL; if not NULL, it
3580 is a NUL-terminated string taken from the packet following
3581 this feature's name and an equals sign. */
3582 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3585 /* The corresponding packet for this feature. Only used if
3586 FUNC is remote_supported_packet. */
3591 remote_supported_packet (const struct protocol_feature
*feature
,
3592 enum packet_support support
,
3593 const char *argument
)
3597 warning (_("Remote qSupported response supplied an unexpected value for"
3598 " \"%s\"."), feature
->name
);
3602 if (remote_protocol_packets
[feature
->packet
].support
3603 == PACKET_SUPPORT_UNKNOWN
)
3604 remote_protocol_packets
[feature
->packet
].support
= support
;
3608 remote_packet_size (const struct protocol_feature
*feature
,
3609 enum packet_support support
, const char *value
)
3611 struct remote_state
*rs
= get_remote_state ();
3616 if (support
!= PACKET_ENABLE
)
3619 if (value
== NULL
|| *value
== '\0')
3621 warning (_("Remote target reported \"%s\" without a size."),
3627 packet_size
= strtol (value
, &value_end
, 16);
3628 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3630 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3631 feature
->name
, value
);
3635 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3637 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3638 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3639 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3642 /* Record the new maximum packet size. */
3643 rs
->explicit_packet_size
= packet_size
;
3647 remote_multi_process_feature (const struct protocol_feature
*feature
,
3648 enum packet_support support
, const char *value
)
3650 struct remote_state
*rs
= get_remote_state ();
3652 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3656 remote_non_stop_feature (const struct protocol_feature
*feature
,
3657 enum packet_support support
, const char *value
)
3659 struct remote_state
*rs
= get_remote_state ();
3661 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3665 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3666 enum packet_support support
,
3669 struct remote_state
*rs
= get_remote_state ();
3671 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3675 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3676 enum packet_support support
,
3679 struct remote_state
*rs
= get_remote_state ();
3681 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3685 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3686 enum packet_support support
,
3689 struct remote_state
*rs
= get_remote_state ();
3691 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3695 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3696 enum packet_support support
,
3699 struct remote_state
*rs
= get_remote_state ();
3701 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3705 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3706 enum packet_support support
,
3709 struct remote_state
*rs
= get_remote_state ();
3711 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3714 static struct protocol_feature remote_protocol_features
[] = {
3715 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3716 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3717 PACKET_qXfer_auxv
},
3718 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3719 PACKET_qXfer_features
},
3720 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3721 PACKET_qXfer_libraries
},
3722 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3723 PACKET_qXfer_memory_map
},
3724 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3725 PACKET_qXfer_spu_read
},
3726 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3727 PACKET_qXfer_spu_write
},
3728 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3729 PACKET_qXfer_osdata
},
3730 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3731 PACKET_qXfer_threads
},
3732 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3733 PACKET_qXfer_traceframe_info
},
3734 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3735 PACKET_QPassSignals
},
3736 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3737 PACKET_QStartNoAckMode
},
3738 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3739 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3740 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3741 PACKET_qXfer_siginfo_read
},
3742 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3743 PACKET_qXfer_siginfo_write
},
3744 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3745 PACKET_ConditionalTracepoints
},
3746 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3747 PACKET_FastTracepoints
},
3748 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3749 PACKET_StaticTracepoints
},
3750 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3752 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3754 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3756 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3757 PACKET_TracepointSource
},
3758 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3760 { "EnableDisableTracepoints", PACKET_DISABLE
,
3761 remote_enable_disable_tracepoint_feature
, -1 },
3762 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3763 PACKET_qXfer_fdpic
},
3766 static char *remote_support_xml
;
3768 /* Register string appended to "xmlRegisters=" in qSupported query. */
3771 register_remote_support_xml (const char *xml
)
3773 #if defined(HAVE_LIBEXPAT)
3774 if (remote_support_xml
== NULL
)
3775 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3778 char *copy
= xstrdup (remote_support_xml
+ 13);
3779 char *p
= strtok (copy
, ",");
3783 if (strcmp (p
, xml
) == 0)
3790 while ((p
= strtok (NULL
, ",")) != NULL
);
3793 remote_support_xml
= reconcat (remote_support_xml
,
3794 remote_support_xml
, ",", xml
,
3801 remote_query_supported_append (char *msg
, const char *append
)
3804 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3806 return xstrdup (append
);
3810 remote_query_supported (void)
3812 struct remote_state
*rs
= get_remote_state ();
3815 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3817 /* The packet support flags are handled differently for this packet
3818 than for most others. We treat an error, a disabled packet, and
3819 an empty response identically: any features which must be reported
3820 to be used will be automatically disabled. An empty buffer
3821 accomplishes this, since that is also the representation for a list
3822 containing no features. */
3825 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3828 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3831 q
= remote_query_supported_append (q
, "multiprocess+");
3833 if (remote_support_xml
)
3834 q
= remote_query_supported_append (q
, remote_support_xml
);
3836 q
= remote_query_supported_append (q
, "qRelocInsn+");
3838 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
3841 do_cleanups (old_chain
);
3843 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3845 /* If an error occured, warn, but do not return - just reset the
3846 buffer to empty and go on to disable features. */
3847 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3850 warning (_("Remote failure reply: %s"), rs
->buf
);
3855 memset (seen
, 0, sizeof (seen
));
3860 enum packet_support is_supported
;
3861 char *p
, *end
, *name_end
, *value
;
3863 /* First separate out this item from the rest of the packet. If
3864 there's another item after this, we overwrite the separator
3865 (terminated strings are much easier to work with). */
3867 end
= strchr (p
, ';');
3870 end
= p
+ strlen (p
);
3880 warning (_("empty item in \"qSupported\" response"));
3885 name_end
= strchr (p
, '=');
3888 /* This is a name=value entry. */
3889 is_supported
= PACKET_ENABLE
;
3890 value
= name_end
+ 1;
3899 is_supported
= PACKET_ENABLE
;
3903 is_supported
= PACKET_DISABLE
;
3907 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3911 warning (_("unrecognized item \"%s\" "
3912 "in \"qSupported\" response"), p
);
3918 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3919 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3921 const struct protocol_feature
*feature
;
3924 feature
= &remote_protocol_features
[i
];
3925 feature
->func (feature
, is_supported
, value
);
3930 /* If we increased the packet size, make sure to increase the global
3931 buffer size also. We delay this until after parsing the entire
3932 qSupported packet, because this is the same buffer we were
3934 if (rs
->buf_size
< rs
->explicit_packet_size
)
3936 rs
->buf_size
= rs
->explicit_packet_size
;
3937 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3940 /* Handle the defaults for unmentioned features. */
3941 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3944 const struct protocol_feature
*feature
;
3946 feature
= &remote_protocol_features
[i
];
3947 feature
->func (feature
, feature
->default_support
, NULL
);
3953 remote_open_1 (char *name
, int from_tty
,
3954 struct target_ops
*target
, int extended_p
)
3956 struct remote_state
*rs
= get_remote_state ();
3959 error (_("To open a remote debug connection, you need to specify what\n"
3960 "serial device is attached to the remote system\n"
3961 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3963 /* See FIXME above. */
3964 if (!target_async_permitted
)
3965 wait_forever_enabled_p
= 1;
3967 /* If we're connected to a running target, target_preopen will kill it.
3968 But if we're connected to a target system with no running process,
3969 then we will still be connected when it returns. Ask this question
3970 first, before target_preopen has a chance to kill anything. */
3971 if (remote_desc
!= NULL
&& !have_inferiors ())
3974 || query (_("Already connected to a remote target. Disconnect? ")))
3977 error (_("Still connected."));
3980 target_preopen (from_tty
);
3982 unpush_target (target
);
3984 /* This time without a query. If we were connected to an
3985 extended-remote target and target_preopen killed the running
3986 process, we may still be connected. If we are starting "target
3987 remote" now, the extended-remote target will not have been
3988 removed by unpush_target. */
3989 if (remote_desc
!= NULL
&& !have_inferiors ())
3992 /* Make sure we send the passed signals list the next time we resume. */
3993 xfree (last_pass_packet
);
3994 last_pass_packet
= NULL
;
3996 remote_fileio_reset ();
3997 reopen_exec_file ();
4000 remote_desc
= remote_serial_open (name
);
4002 perror_with_name (name
);
4004 if (baud_rate
!= -1)
4006 if (serial_setbaudrate (remote_desc
, baud_rate
))
4008 /* The requested speed could not be set. Error out to
4009 top level after closing remote_desc. Take care to
4010 set remote_desc to NULL to avoid closing remote_desc
4012 serial_close (remote_desc
);
4014 perror_with_name (name
);
4018 serial_raw (remote_desc
);
4020 /* If there is something sitting in the buffer we might take it as a
4021 response to a command, which would be bad. */
4022 serial_flush_input (remote_desc
);
4026 puts_filtered ("Remote debugging using ");
4027 puts_filtered (name
);
4028 puts_filtered ("\n");
4030 push_target (target
); /* Switch to using remote target now. */
4032 /* Register extra event sources in the event loop. */
4033 remote_async_inferior_event_token
4034 = create_async_event_handler (remote_async_inferior_event_handler
,
4036 remote_async_get_pending_events_token
4037 = create_async_event_handler (remote_async_get_pending_events_handler
,
4040 /* Reset the target state; these things will be queried either by
4041 remote_query_supported or as they are needed. */
4042 init_all_packet_configs ();
4043 rs
->cached_wait_status
= 0;
4044 rs
->explicit_packet_size
= 0;
4046 rs
->multi_process_aware
= 0;
4047 rs
->extended
= extended_p
;
4048 rs
->non_stop_aware
= 0;
4049 rs
->waiting_for_stop_reply
= 0;
4050 rs
->ctrlc_pending_p
= 0;
4052 general_thread
= not_sent_ptid
;
4053 continue_thread
= not_sent_ptid
;
4054 remote_traceframe_number
= -1;
4056 /* Probe for ability to use "ThreadInfo" query, as required. */
4057 use_threadinfo_query
= 1;
4058 use_threadextra_query
= 1;
4060 if (target_async_permitted
)
4062 /* With this target we start out by owning the terminal. */
4063 remote_async_terminal_ours_p
= 1;
4065 /* FIXME: cagney/1999-09-23: During the initial connection it is
4066 assumed that the target is already ready and able to respond to
4067 requests. Unfortunately remote_start_remote() eventually calls
4068 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4069 around this. Eventually a mechanism that allows
4070 wait_for_inferior() to expect/get timeouts will be
4072 wait_forever_enabled_p
= 0;
4075 /* First delete any symbols previously loaded from shared libraries. */
4076 no_shared_libraries (NULL
, 0);
4079 init_thread_list ();
4081 /* Start the remote connection. If error() or QUIT, discard this
4082 target (we'd otherwise be in an inconsistent state) and then
4083 propogate the error on up the exception chain. This ensures that
4084 the caller doesn't stumble along blindly assuming that the
4085 function succeeded. The CLI doesn't have this problem but other
4086 UI's, such as MI do.
4088 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4089 this function should return an error indication letting the
4090 caller restore the previous state. Unfortunately the command
4091 ``target remote'' is directly wired to this function making that
4092 impossible. On a positive note, the CLI side of this problem has
4093 been fixed - the function set_cmd_context() makes it possible for
4094 all the ``target ....'' commands to share a common callback
4095 function. See cli-dump.c. */
4097 volatile struct gdb_exception ex
;
4099 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4101 remote_start_remote (from_tty
, target
, extended_p
);
4105 /* Pop the partially set up target - unless something else did
4106 already before throwing the exception. */
4107 if (remote_desc
!= NULL
)
4109 if (target_async_permitted
)
4110 wait_forever_enabled_p
= 1;
4111 throw_exception (ex
);
4115 if (target_async_permitted
)
4116 wait_forever_enabled_p
= 1;
4119 /* This takes a program previously attached to and detaches it. After
4120 this is done, GDB can be used to debug some other program. We
4121 better not have left any breakpoints in the target program or it'll
4122 die when it hits one. */
4125 remote_detach_1 (char *args
, int from_tty
, int extended
)
4127 int pid
= ptid_get_pid (inferior_ptid
);
4128 struct remote_state
*rs
= get_remote_state ();
4131 error (_("Argument given to \"detach\" when remotely debugging."));
4133 if (!target_has_execution
)
4134 error (_("No process to detach from."));
4136 /* Tell the remote target to detach. */
4137 if (remote_multi_process_p (rs
))
4138 sprintf (rs
->buf
, "D;%x", pid
);
4140 strcpy (rs
->buf
, "D");
4143 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4145 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4147 else if (rs
->buf
[0] == '\0')
4148 error (_("Remote doesn't know how to detach"));
4150 error (_("Can't detach process."));
4154 if (remote_multi_process_p (rs
))
4155 printf_filtered (_("Detached from remote %s.\n"),
4156 target_pid_to_str (pid_to_ptid (pid
)));
4160 puts_filtered (_("Detached from remote process.\n"));
4162 puts_filtered (_("Ending remote debugging.\n"));
4166 discard_pending_stop_replies (pid
);
4167 target_mourn_inferior ();
4171 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4173 remote_detach_1 (args
, from_tty
, 0);
4177 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4179 remote_detach_1 (args
, from_tty
, 1);
4182 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4185 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4188 error (_("Argument given to \"disconnect\" when remotely debugging."));
4190 /* Make sure we unpush even the extended remote targets; mourn
4191 won't do it. So call remote_mourn_1 directly instead of
4192 target_mourn_inferior. */
4193 remote_mourn_1 (target
);
4196 puts_filtered ("Ending remote debugging.\n");
4199 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4200 be chatty about it. */
4203 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4205 struct remote_state
*rs
= get_remote_state ();
4207 char *wait_status
= NULL
;
4209 pid
= parse_pid_to_attach (args
);
4211 /* Remote PID can be freely equal to getpid, do not check it here the same
4212 way as in other targets. */
4214 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4215 error (_("This target does not support attaching to a process"));
4217 sprintf (rs
->buf
, "vAttach;%x", pid
);
4219 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4221 if (packet_ok (rs
->buf
,
4222 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4225 printf_unfiltered (_("Attached to %s\n"),
4226 target_pid_to_str (pid_to_ptid (pid
)));
4230 /* Save the reply for later. */
4231 wait_status
= alloca (strlen (rs
->buf
) + 1);
4232 strcpy (wait_status
, rs
->buf
);
4234 else if (strcmp (rs
->buf
, "OK") != 0)
4235 error (_("Attaching to %s failed with: %s"),
4236 target_pid_to_str (pid_to_ptid (pid
)),
4239 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4240 error (_("This target does not support attaching to a process"));
4242 error (_("Attaching to %s failed"),
4243 target_pid_to_str (pid_to_ptid (pid
)));
4245 set_current_inferior (remote_add_inferior (pid
, 1));
4247 inferior_ptid
= pid_to_ptid (pid
);
4251 struct thread_info
*thread
;
4253 /* Get list of threads. */
4254 remote_threads_info (target
);
4256 thread
= first_thread_of_process (pid
);
4258 inferior_ptid
= thread
->ptid
;
4260 inferior_ptid
= pid_to_ptid (pid
);
4262 /* Invalidate our notion of the remote current thread. */
4263 record_currthread (minus_one_ptid
);
4267 /* Now, if we have thread information, update inferior_ptid. */
4268 inferior_ptid
= remote_current_thread (inferior_ptid
);
4270 /* Add the main thread to the thread list. */
4271 add_thread_silent (inferior_ptid
);
4274 /* Next, if the target can specify a description, read it. We do
4275 this before anything involving memory or registers. */
4276 target_find_description ();
4280 /* Use the previously fetched status. */
4281 gdb_assert (wait_status
!= NULL
);
4283 if (target_can_async_p ())
4285 struct stop_reply
*stop_reply
;
4286 struct cleanup
*old_chain
;
4288 stop_reply
= stop_reply_xmalloc ();
4289 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4290 remote_parse_stop_reply (wait_status
, stop_reply
);
4291 discard_cleanups (old_chain
);
4292 push_stop_reply (stop_reply
);
4294 target_async (inferior_event_handler
, 0);
4298 gdb_assert (wait_status
!= NULL
);
4299 strcpy (rs
->buf
, wait_status
);
4300 rs
->cached_wait_status
= 1;
4304 gdb_assert (wait_status
== NULL
);
4308 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4310 extended_remote_attach_1 (ops
, args
, from_tty
);
4313 /* Convert hex digit A to a number. */
4318 if (a
>= '0' && a
<= '9')
4320 else if (a
>= 'a' && a
<= 'f')
4321 return a
- 'a' + 10;
4322 else if (a
>= 'A' && a
<= 'F')
4323 return a
- 'A' + 10;
4325 error (_("Reply contains invalid hex digit %d"), a
);
4329 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4333 for (i
= 0; i
< count
; i
++)
4335 if (hex
[0] == 0 || hex
[1] == 0)
4337 /* Hex string is short, or of uneven length.
4338 Return the count that has been converted so far. */
4341 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4347 /* Convert number NIB to a hex digit. */
4355 return 'a' + nib
- 10;
4359 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4363 /* May use a length, or a nul-terminated string as input. */
4365 count
= strlen ((char *) bin
);
4367 for (i
= 0; i
< count
; i
++)
4369 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4370 *hex
++ = tohex (*bin
++ & 0xf);
4376 /* Check for the availability of vCont. This function should also check
4380 remote_vcont_probe (struct remote_state
*rs
)
4384 strcpy (rs
->buf
, "vCont?");
4386 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4389 /* Make sure that the features we assume are supported. */
4390 if (strncmp (buf
, "vCont", 5) == 0)
4393 int support_s
, support_S
, support_c
, support_C
;
4399 rs
->support_vCont_t
= 0;
4400 while (p
&& *p
== ';')
4403 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4405 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4407 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4409 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4411 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4412 rs
->support_vCont_t
= 1;
4414 p
= strchr (p
, ';');
4417 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4418 BUF will make packet_ok disable the packet. */
4419 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4423 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4426 /* Helper function for building "vCont" resumptions. Write a
4427 resumption to P. ENDP points to one-passed-the-end of the buffer
4428 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4429 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4430 resumed thread should be single-stepped and/or signalled. If PTID
4431 equals minus_one_ptid, then all threads are resumed; if PTID
4432 represents a process, then all threads of the process are resumed;
4433 the thread to be stepped and/or signalled is given in the global
4437 append_resumption (char *p
, char *endp
,
4438 ptid_t ptid
, int step
, enum target_signal siggnal
)
4440 struct remote_state
*rs
= get_remote_state ();
4442 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4443 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4445 p
+= xsnprintf (p
, endp
- p
, ";s");
4446 else if (siggnal
!= TARGET_SIGNAL_0
)
4447 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4449 p
+= xsnprintf (p
, endp
- p
, ";c");
4451 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4455 /* All (-1) threads of process. */
4456 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4458 p
+= xsnprintf (p
, endp
- p
, ":");
4459 p
= write_ptid (p
, endp
, nptid
);
4461 else if (!ptid_equal (ptid
, minus_one_ptid
))
4463 p
+= xsnprintf (p
, endp
- p
, ":");
4464 p
= write_ptid (p
, endp
, ptid
);
4470 /* Resume the remote inferior by using a "vCont" packet. The thread
4471 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4472 resumed thread should be single-stepped and/or signalled. If PTID
4473 equals minus_one_ptid, then all threads are resumed; the thread to
4474 be stepped and/or signalled is given in the global INFERIOR_PTID.
4475 This function returns non-zero iff it resumes the inferior.
4477 This function issues a strict subset of all possible vCont commands at the
4481 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4483 struct remote_state
*rs
= get_remote_state ();
4487 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4488 remote_vcont_probe (rs
);
4490 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4494 endp
= rs
->buf
+ get_remote_packet_size ();
4496 /* If we could generate a wider range of packets, we'd have to worry
4497 about overflowing BUF. Should there be a generic
4498 "multi-part-packet" packet? */
4500 p
+= xsnprintf (p
, endp
- p
, "vCont");
4502 if (ptid_equal (ptid
, magic_null_ptid
))
4504 /* MAGIC_NULL_PTID means that we don't have any active threads,
4505 so we don't have any TID numbers the inferior will
4506 understand. Make sure to only send forms that do not specify
4508 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4510 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4512 /* Resume all threads (of all processes, or of a single
4513 process), with preference for INFERIOR_PTID. This assumes
4514 inferior_ptid belongs to the set of all threads we are about
4516 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4518 /* Step inferior_ptid, with or without signal. */
4519 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4522 /* And continue others without a signal. */
4523 append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4527 /* Scheduler locking; resume only PTID. */
4528 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4531 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4536 /* In non-stop, the stub replies to vCont with "OK". The stop
4537 reply will be reported asynchronously by means of a `%Stop'
4539 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4540 if (strcmp (rs
->buf
, "OK") != 0)
4541 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4547 /* Tell the remote machine to resume. */
4549 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4551 static int last_sent_step
;
4554 remote_resume (struct target_ops
*ops
,
4555 ptid_t ptid
, int step
, enum target_signal siggnal
)
4557 struct remote_state
*rs
= get_remote_state ();
4560 last_sent_signal
= siggnal
;
4561 last_sent_step
= step
;
4563 /* The vCont packet doesn't need to specify threads via Hc. */
4564 /* No reverse support (yet) for vCont. */
4565 if (execution_direction
!= EXEC_REVERSE
)
4566 if (remote_vcont_resume (ptid
, step
, siggnal
))
4569 /* All other supported resume packets do use Hc, so set the continue
4571 if (ptid_equal (ptid
, minus_one_ptid
))
4572 set_continue_thread (any_thread_ptid
);
4574 set_continue_thread (ptid
);
4577 if (execution_direction
== EXEC_REVERSE
)
4579 /* We don't pass signals to the target in reverse exec mode. */
4580 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4581 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4585 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4586 error (_("Remote reverse-step not supported."));
4588 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4589 error (_("Remote reverse-continue not supported."));
4591 strcpy (buf
, step
? "bs" : "bc");
4593 else if (siggnal
!= TARGET_SIGNAL_0
)
4595 buf
[0] = step
? 'S' : 'C';
4596 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4597 buf
[2] = tohex (((int) siggnal
) & 0xf);
4601 strcpy (buf
, step
? "s" : "c");
4606 /* We are about to start executing the inferior, let's register it
4607 with the event loop. NOTE: this is the one place where all the
4608 execution commands end up. We could alternatively do this in each
4609 of the execution commands in infcmd.c. */
4610 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4611 into infcmd.c in order to allow inferior function calls to work
4612 NOT asynchronously. */
4613 if (target_can_async_p ())
4614 target_async (inferior_event_handler
, 0);
4616 /* We've just told the target to resume. The remote server will
4617 wait for the inferior to stop, and then send a stop reply. In
4618 the mean time, we can't start another command/query ourselves
4619 because the stub wouldn't be ready to process it. This applies
4620 only to the base all-stop protocol, however. In non-stop (which
4621 only supports vCont), the stub replies with an "OK", and is
4622 immediate able to process further serial input. */
4624 rs
->waiting_for_stop_reply
= 1;
4628 /* Set up the signal handler for SIGINT, while the target is
4629 executing, ovewriting the 'regular' SIGINT signal handler. */
4631 initialize_sigint_signal_handler (void)
4633 signal (SIGINT
, handle_remote_sigint
);
4636 /* Signal handler for SIGINT, while the target is executing. */
4638 handle_remote_sigint (int sig
)
4640 signal (sig
, handle_remote_sigint_twice
);
4641 mark_async_signal_handler_wrapper (sigint_remote_token
);
4644 /* Signal handler for SIGINT, installed after SIGINT has already been
4645 sent once. It will take effect the second time that the user sends
4648 handle_remote_sigint_twice (int sig
)
4650 signal (sig
, handle_remote_sigint
);
4651 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4654 /* Perform the real interruption of the target execution, in response
4657 async_remote_interrupt (gdb_client_data arg
)
4660 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4662 target_stop (inferior_ptid
);
4665 /* Perform interrupt, if the first attempt did not succeed. Just give
4666 up on the target alltogether. */
4668 async_remote_interrupt_twice (gdb_client_data arg
)
4671 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4676 /* Reinstall the usual SIGINT handlers, after the target has
4679 cleanup_sigint_signal_handler (void *dummy
)
4681 signal (SIGINT
, handle_sigint
);
4684 /* Send ^C to target to halt it. Target will respond, and send us a
4686 static void (*ofunc
) (int);
4688 /* The command line interface's stop routine. This function is installed
4689 as a signal handler for SIGINT. The first time a user requests a
4690 stop, we call remote_stop to send a break or ^C. If there is no
4691 response from the target (it didn't stop when the user requested it),
4692 we ask the user if he'd like to detach from the target. */
4694 remote_interrupt (int signo
)
4696 /* If this doesn't work, try more severe steps. */
4697 signal (signo
, remote_interrupt_twice
);
4699 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4702 /* The user typed ^C twice. */
4705 remote_interrupt_twice (int signo
)
4707 signal (signo
, ofunc
);
4708 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4709 signal (signo
, remote_interrupt
);
4712 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4713 thread, all threads of a remote process, or all threads of all
4717 remote_stop_ns (ptid_t ptid
)
4719 struct remote_state
*rs
= get_remote_state ();
4721 char *endp
= rs
->buf
+ get_remote_packet_size ();
4723 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4724 remote_vcont_probe (rs
);
4726 if (!rs
->support_vCont_t
)
4727 error (_("Remote server does not support stopping threads"));
4729 if (ptid_equal (ptid
, minus_one_ptid
)
4730 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4731 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4736 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4738 if (ptid_is_pid (ptid
))
4739 /* All (-1) threads of process. */
4740 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4743 /* Small optimization: if we already have a stop reply for
4744 this thread, no use in telling the stub we want this
4746 if (peek_stop_reply (ptid
))
4752 write_ptid (p
, endp
, nptid
);
4755 /* In non-stop, we get an immediate OK reply. The stop reply will
4756 come in asynchronously by notification. */
4758 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4759 if (strcmp (rs
->buf
, "OK") != 0)
4760 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4763 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4764 remote target. It is undefined which thread of which process
4765 reports the stop. */
4768 remote_stop_as (ptid_t ptid
)
4770 struct remote_state
*rs
= get_remote_state ();
4772 rs
->ctrlc_pending_p
= 1;
4774 /* If the inferior is stopped already, but the core didn't know
4775 about it yet, just ignore the request. The cached wait status
4776 will be collected in remote_wait. */
4777 if (rs
->cached_wait_status
)
4780 /* Send interrupt_sequence to remote target. */
4781 send_interrupt_sequence ();
4784 /* This is the generic stop called via the target vector. When a target
4785 interrupt is requested, either by the command line or the GUI, we
4786 will eventually end up here. */
4789 remote_stop (ptid_t ptid
)
4792 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4795 remote_stop_ns (ptid
);
4797 remote_stop_as (ptid
);
4800 /* Ask the user what to do when an interrupt is received. */
4803 interrupt_query (void)
4805 target_terminal_ours ();
4807 if (target_can_async_p ())
4809 signal (SIGINT
, handle_sigint
);
4810 deprecated_throw_reason (RETURN_QUIT
);
4814 if (query (_("Interrupted while waiting for the program.\n\
4815 Give up (and stop debugging it)? ")))
4818 deprecated_throw_reason (RETURN_QUIT
);
4822 target_terminal_inferior ();
4825 /* Enable/disable target terminal ownership. Most targets can use
4826 terminal groups to control terminal ownership. Remote targets are
4827 different in that explicit transfer of ownership to/from GDB/target
4831 remote_terminal_inferior (void)
4833 if (!target_async_permitted
)
4834 /* Nothing to do. */
4837 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4838 idempotent. The event-loop GDB talking to an asynchronous target
4839 with a synchronous command calls this function from both
4840 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4841 transfer the terminal to the target when it shouldn't this guard
4843 if (!remote_async_terminal_ours_p
)
4845 delete_file_handler (input_fd
);
4846 remote_async_terminal_ours_p
= 0;
4847 initialize_sigint_signal_handler ();
4848 /* NOTE: At this point we could also register our selves as the
4849 recipient of all input. Any characters typed could then be
4850 passed on down to the target. */
4854 remote_terminal_ours (void)
4856 if (!target_async_permitted
)
4857 /* Nothing to do. */
4860 /* See FIXME in remote_terminal_inferior. */
4861 if (remote_async_terminal_ours_p
)
4863 cleanup_sigint_signal_handler (NULL
);
4864 add_file_handler (input_fd
, stdin_event_handler
, 0);
4865 remote_async_terminal_ours_p
= 1;
4869 remote_console_output (char *msg
)
4873 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4876 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4880 fputs_unfiltered (tb
, gdb_stdtarg
);
4882 gdb_flush (gdb_stdtarg
);
4885 typedef struct cached_reg
4888 gdb_byte data
[MAX_REGISTER_SIZE
];
4891 DEF_VEC_O(cached_reg_t
);
4895 struct stop_reply
*next
;
4899 struct target_waitstatus ws
;
4901 /* Expedited registers. This makes remote debugging a bit more
4902 efficient for those targets that provide critical registers as
4903 part of their normal status mechanism (as another roundtrip to
4904 fetch them is avoided). */
4905 VEC(cached_reg_t
) *regcache
;
4907 int stopped_by_watchpoint_p
;
4908 CORE_ADDR watch_data_address
;
4916 /* The list of already fetched and acknowledged stop events. */
4917 static struct stop_reply
*stop_reply_queue
;
4919 static struct stop_reply
*
4920 stop_reply_xmalloc (void)
4922 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
4929 stop_reply_xfree (struct stop_reply
*r
)
4933 VEC_free (cached_reg_t
, r
->regcache
);
4938 /* Discard all pending stop replies of inferior PID. If PID is -1,
4939 discard everything. */
4942 discard_pending_stop_replies (int pid
)
4944 struct stop_reply
*prev
= NULL
, *reply
, *next
;
4946 /* Discard the in-flight notification. */
4947 if (pending_stop_reply
!= NULL
4949 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
4951 stop_reply_xfree (pending_stop_reply
);
4952 pending_stop_reply
= NULL
;
4955 /* Discard the stop replies we have already pulled with
4957 for (reply
= stop_reply_queue
; reply
; reply
= next
)
4961 || ptid_get_pid (reply
->ptid
) == pid
)
4963 if (reply
== stop_reply_queue
)
4964 stop_reply_queue
= reply
->next
;
4966 prev
->next
= reply
->next
;
4968 stop_reply_xfree (reply
);
4975 /* Cleanup wrapper. */
4978 do_stop_reply_xfree (void *arg
)
4980 struct stop_reply
*r
= arg
;
4982 stop_reply_xfree (r
);
4985 /* Look for a queued stop reply belonging to PTID. If one is found,
4986 remove it from the queue, and return it. Returns NULL if none is
4987 found. If there are still queued events left to process, tell the
4988 event loop to get back to target_wait soon. */
4990 static struct stop_reply
*
4991 queued_stop_reply (ptid_t ptid
)
4993 struct stop_reply
*it
;
4994 struct stop_reply
**it_link
;
4996 it
= stop_reply_queue
;
4997 it_link
= &stop_reply_queue
;
5000 if (ptid_match (it
->ptid
, ptid
))
5002 *it_link
= it
->next
;
5007 it_link
= &it
->next
;
5011 if (stop_reply_queue
)
5012 /* There's still at least an event left. */
5013 mark_async_event_handler (remote_async_inferior_event_token
);
5018 /* Push a fully parsed stop reply in the stop reply queue. Since we
5019 know that we now have at least one queued event left to pass to the
5020 core side, tell the event loop to get back to target_wait soon. */
5023 push_stop_reply (struct stop_reply
*new_event
)
5025 struct stop_reply
*event
;
5027 if (stop_reply_queue
)
5029 for (event
= stop_reply_queue
;
5030 event
&& event
->next
;
5031 event
= event
->next
)
5034 event
->next
= new_event
;
5037 stop_reply_queue
= new_event
;
5039 mark_async_event_handler (remote_async_inferior_event_token
);
5042 /* Returns true if we have a stop reply for PTID. */
5045 peek_stop_reply (ptid_t ptid
)
5047 struct stop_reply
*it
;
5049 for (it
= stop_reply_queue
; it
; it
= it
->next
)
5050 if (ptid_equal (ptid
, it
->ptid
))
5052 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5059 /* Parse the stop reply in BUF. Either the function succeeds, and the
5060 result is stored in EVENT, or throws an error. */
5063 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5065 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5069 event
->ptid
= null_ptid
;
5070 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5071 event
->ws
.value
.integer
= 0;
5072 event
->solibs_changed
= 0;
5073 event
->replay_event
= 0;
5074 event
->stopped_by_watchpoint_p
= 0;
5075 event
->regcache
= NULL
;
5080 case 'T': /* Status with PC, SP, FP, ... */
5081 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5082 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5084 n... = register number
5085 r... = register contents
5088 p
= &buf
[3]; /* after Txx */
5096 /* If the packet contains a register number, save it in
5097 pnum and set p1 to point to the character following it.
5098 Otherwise p1 points to p. */
5100 /* If this packet is an awatch packet, don't parse the 'a'
5101 as a register number. */
5103 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5104 && strncmp (p
, "core", strlen ("core") != 0))
5106 /* Read the ``P'' register number. */
5107 pnum
= strtol (p
, &p_temp
, 16);
5113 if (p1
== p
) /* No register number present here. */
5115 p1
= strchr (p
, ':');
5117 error (_("Malformed packet(a) (missing colon): %s\n\
5120 if (strncmp (p
, "thread", p1
- p
) == 0)
5121 event
->ptid
= read_ptid (++p1
, &p
);
5122 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5123 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5124 || (strncmp (p
, "awatch", p1
- p
) == 0))
5126 event
->stopped_by_watchpoint_p
= 1;
5127 p
= unpack_varlen_hex (++p1
, &addr
);
5128 event
->watch_data_address
= (CORE_ADDR
) addr
;
5130 else if (strncmp (p
, "library", p1
- p
) == 0)
5134 while (*p_temp
&& *p_temp
!= ';')
5137 event
->solibs_changed
= 1;
5140 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5142 /* NO_HISTORY event.
5143 p1 will indicate "begin" or "end", but
5144 it makes no difference for now, so ignore it. */
5145 event
->replay_event
= 1;
5146 p_temp
= strchr (p1
+ 1, ';');
5150 else if (strncmp (p
, "core", p1
- p
) == 0)
5154 p
= unpack_varlen_hex (++p1
, &c
);
5159 /* Silently skip unknown optional info. */
5160 p_temp
= strchr (p1
+ 1, ';');
5167 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5168 cached_reg_t cached_reg
;
5173 error (_("Malformed packet(b) (missing colon): %s\n\
5179 error (_("Remote sent bad register number %s: %s\n\
5181 hex_string (pnum
), p
, buf
);
5183 cached_reg
.num
= reg
->regnum
;
5185 fieldsize
= hex2bin (p
, cached_reg
.data
,
5186 register_size (target_gdbarch
,
5189 if (fieldsize
< register_size (target_gdbarch
,
5191 warning (_("Remote reply is too short: %s"), buf
);
5193 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5197 error (_("Remote register badly formatted: %s\nhere: %s"),
5202 case 'S': /* Old style status, just signal only. */
5203 if (event
->solibs_changed
)
5204 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5205 else if (event
->replay_event
)
5206 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5209 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5210 event
->ws
.value
.sig
= (enum target_signal
)
5211 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5214 case 'W': /* Target exited. */
5221 /* GDB used to accept only 2 hex chars here. Stubs should
5222 only send more if they detect GDB supports multi-process
5224 p
= unpack_varlen_hex (&buf
[1], &value
);
5228 /* The remote process exited. */
5229 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5230 event
->ws
.value
.integer
= value
;
5234 /* The remote process exited with a signal. */
5235 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5236 event
->ws
.value
.sig
= (enum target_signal
) value
;
5239 /* If no process is specified, assume inferior_ptid. */
5240 pid
= ptid_get_pid (inferior_ptid
);
5249 else if (strncmp (p
,
5250 "process:", sizeof ("process:") - 1) == 0)
5254 p
+= sizeof ("process:") - 1;
5255 unpack_varlen_hex (p
, &upid
);
5259 error (_("unknown stop reply packet: %s"), buf
);
5262 error (_("unknown stop reply packet: %s"), buf
);
5263 event
->ptid
= pid_to_ptid (pid
);
5268 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5269 error (_("No process or thread specified in stop reply: %s"), buf
);
5272 /* When the stub wants to tell GDB about a new stop reply, it sends a
5273 stop notification (%Stop). Those can come it at any time, hence,
5274 we have to make sure that any pending putpkt/getpkt sequence we're
5275 making is finished, before querying the stub for more events with
5276 vStopped. E.g., if we started a vStopped sequence immediatelly
5277 upon receiving the %Stop notification, something like this could
5285 1.6) <-- (registers reply to step #1.3)
5287 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5290 To solve this, whenever we parse a %Stop notification sucessfully,
5291 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5292 doing whatever we were doing:
5298 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5299 2.5) <-- (registers reply to step #2.3)
5301 Eventualy after step #2.5, we return to the event loop, which
5302 notices there's an event on the
5303 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5304 associated callback --- the function below. At this point, we're
5305 always safe to start a vStopped sequence. :
5308 2.7) <-- T05 thread:2
5314 remote_get_pending_stop_replies (void)
5316 struct remote_state
*rs
= get_remote_state ();
5318 if (pending_stop_reply
)
5321 putpkt ("vStopped");
5323 /* Now we can rely on it. */
5324 push_stop_reply (pending_stop_reply
);
5325 pending_stop_reply
= NULL
;
5329 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5330 if (strcmp (rs
->buf
, "OK") == 0)
5334 struct cleanup
*old_chain
;
5335 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5337 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5338 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5341 putpkt ("vStopped");
5343 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5345 /* Now we can rely on it. */
5346 discard_cleanups (old_chain
);
5347 push_stop_reply (stop_reply
);
5350 /* We got an unknown stop reply. */
5351 do_cleanups (old_chain
);
5358 /* Called when it is decided that STOP_REPLY holds the info of the
5359 event that is to be returned to the core. This function always
5360 destroys STOP_REPLY. */
5363 process_stop_reply (struct stop_reply
*stop_reply
,
5364 struct target_waitstatus
*status
)
5368 *status
= stop_reply
->ws
;
5369 ptid
= stop_reply
->ptid
;
5371 /* If no thread/process was reported by the stub, assume the current
5373 if (ptid_equal (ptid
, null_ptid
))
5374 ptid
= inferior_ptid
;
5376 if (status
->kind
!= TARGET_WAITKIND_EXITED
5377 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5379 /* Expedited registers. */
5380 if (stop_reply
->regcache
)
5382 struct regcache
*regcache
5383 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5388 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5390 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5391 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5394 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5395 remote_watch_data_address
= stop_reply
->watch_data_address
;
5397 remote_notice_new_inferior (ptid
, 0);
5398 demand_private_info (ptid
)->core
= stop_reply
->core
;
5401 stop_reply_xfree (stop_reply
);
5405 /* The non-stop mode version of target_wait. */
5408 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5410 struct remote_state
*rs
= get_remote_state ();
5411 struct stop_reply
*stop_reply
;
5414 /* If in non-stop mode, get out of getpkt even if a
5415 notification is received. */
5417 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5424 case 'E': /* Error of some sort. */
5425 /* We're out of sync with the target now. Did it continue
5426 or not? We can't tell which thread it was in non-stop,
5427 so just ignore this. */
5428 warning (_("Remote failure reply: %s"), rs
->buf
);
5430 case 'O': /* Console output. */
5431 remote_console_output (rs
->buf
+ 1);
5434 warning (_("Invalid remote reply: %s"), rs
->buf
);
5438 /* Acknowledge a pending stop reply that may have arrived in the
5440 if (pending_stop_reply
!= NULL
)
5441 remote_get_pending_stop_replies ();
5443 /* If indeed we noticed a stop reply, we're done. */
5444 stop_reply
= queued_stop_reply (ptid
);
5445 if (stop_reply
!= NULL
)
5446 return process_stop_reply (stop_reply
, status
);
5448 /* Still no event. If we're just polling for an event, then
5449 return to the event loop. */
5450 if (options
& TARGET_WNOHANG
)
5452 status
->kind
= TARGET_WAITKIND_IGNORE
;
5453 return minus_one_ptid
;
5456 /* Otherwise do a blocking wait. */
5457 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5462 /* Wait until the remote machine stops, then return, storing status in
5463 STATUS just as `wait' would. */
5466 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5468 struct remote_state
*rs
= get_remote_state ();
5469 ptid_t event_ptid
= null_ptid
;
5471 struct stop_reply
*stop_reply
;
5475 status
->kind
= TARGET_WAITKIND_IGNORE
;
5476 status
->value
.integer
= 0;
5478 stop_reply
= queued_stop_reply (ptid
);
5479 if (stop_reply
!= NULL
)
5480 return process_stop_reply (stop_reply
, status
);
5482 if (rs
->cached_wait_status
)
5483 /* Use the cached wait status, but only once. */
5484 rs
->cached_wait_status
= 0;
5489 if (!target_is_async_p ())
5491 ofunc
= signal (SIGINT
, remote_interrupt
);
5492 /* If the user hit C-c before this packet, or between packets,
5493 pretend that it was hit right here. */
5497 remote_interrupt (SIGINT
);
5501 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5502 _never_ wait for ever -> test on target_is_async_p().
5503 However, before we do that we need to ensure that the caller
5504 knows how to take the target into/out of async mode. */
5505 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5506 if (!target_is_async_p ())
5507 signal (SIGINT
, ofunc
);
5512 remote_stopped_by_watchpoint_p
= 0;
5514 /* We got something. */
5515 rs
->waiting_for_stop_reply
= 0;
5517 /* Assume that the target has acknowledged Ctrl-C unless we receive
5518 an 'F' or 'O' packet. */
5519 if (buf
[0] != 'F' && buf
[0] != 'O')
5520 rs
->ctrlc_pending_p
= 0;
5524 case 'E': /* Error of some sort. */
5525 /* We're out of sync with the target now. Did it continue or
5526 not? Not is more likely, so report a stop. */
5527 warning (_("Remote failure reply: %s"), buf
);
5528 status
->kind
= TARGET_WAITKIND_STOPPED
;
5529 status
->value
.sig
= TARGET_SIGNAL_0
;
5531 case 'F': /* File-I/O request. */
5532 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5533 rs
->ctrlc_pending_p
= 0;
5535 case 'T': case 'S': case 'X': case 'W':
5537 struct stop_reply
*stop_reply
;
5538 struct cleanup
*old_chain
;
5540 stop_reply
= stop_reply_xmalloc ();
5541 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5542 remote_parse_stop_reply (buf
, stop_reply
);
5543 discard_cleanups (old_chain
);
5544 event_ptid
= process_stop_reply (stop_reply
, status
);
5547 case 'O': /* Console output. */
5548 remote_console_output (buf
+ 1);
5550 /* The target didn't really stop; keep waiting. */
5551 rs
->waiting_for_stop_reply
= 1;
5555 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5557 /* Zero length reply means that we tried 'S' or 'C' and the
5558 remote system doesn't support it. */
5559 target_terminal_ours_for_output ();
5561 ("Can't send signals to this remote system. %s not sent.\n",
5562 target_signal_to_name (last_sent_signal
));
5563 last_sent_signal
= TARGET_SIGNAL_0
;
5564 target_terminal_inferior ();
5566 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5567 putpkt ((char *) buf
);
5569 /* We just told the target to resume, so a stop reply is in
5571 rs
->waiting_for_stop_reply
= 1;
5574 /* else fallthrough */
5576 warning (_("Invalid remote reply: %s"), buf
);
5578 rs
->waiting_for_stop_reply
= 1;
5582 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5584 /* Nothing interesting happened. If we're doing a non-blocking
5585 poll, we're done. Otherwise, go back to waiting. */
5586 if (options
& TARGET_WNOHANG
)
5587 return minus_one_ptid
;
5591 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5592 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5594 if (!ptid_equal (event_ptid
, null_ptid
))
5595 record_currthread (event_ptid
);
5597 event_ptid
= inferior_ptid
;
5600 /* A process exit. Invalidate our notion of current thread. */
5601 record_currthread (minus_one_ptid
);
5606 /* Wait until the remote machine stops, then return, storing status in
5607 STATUS just as `wait' would. */
5610 remote_wait (struct target_ops
*ops
,
5611 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5616 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5618 event_ptid
= remote_wait_as (ptid
, status
, options
);
5620 if (target_can_async_p ())
5622 /* If there are are events left in the queue tell the event loop
5624 if (stop_reply_queue
)
5625 mark_async_event_handler (remote_async_inferior_event_token
);
5631 /* Fetch a single register using a 'p' packet. */
5634 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5636 struct remote_state
*rs
= get_remote_state ();
5638 char regp
[MAX_REGISTER_SIZE
];
5641 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5644 if (reg
->pnum
== -1)
5649 p
+= hexnumstr (p
, reg
->pnum
);
5652 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5656 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5660 case PACKET_UNKNOWN
:
5663 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5664 gdbarch_register_name (get_regcache_arch (regcache
),
5669 /* If this register is unfetchable, tell the regcache. */
5672 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5676 /* Otherwise, parse and supply the value. */
5682 error (_("fetch_register_using_p: early buf termination"));
5684 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5687 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5691 /* Fetch the registers included in the target's 'g' packet. */
5694 send_g_packet (void)
5696 struct remote_state
*rs
= get_remote_state ();
5699 sprintf (rs
->buf
, "g");
5700 remote_send (&rs
->buf
, &rs
->buf_size
);
5702 /* We can get out of synch in various cases. If the first character
5703 in the buffer is not a hex character, assume that has happened
5704 and try to fetch another packet to read. */
5705 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5706 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5707 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5708 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5711 fprintf_unfiltered (gdb_stdlog
,
5712 "Bad register packet; fetching a new packet\n");
5713 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5716 buf_len
= strlen (rs
->buf
);
5718 /* Sanity check the received packet. */
5719 if (buf_len
% 2 != 0)
5720 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5726 process_g_packet (struct regcache
*regcache
)
5728 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5729 struct remote_state
*rs
= get_remote_state ();
5730 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5735 buf_len
= strlen (rs
->buf
);
5737 /* Further sanity checks, with knowledge of the architecture. */
5738 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5739 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5741 /* Save the size of the packet sent to us by the target. It is used
5742 as a heuristic when determining the max size of packets that the
5743 target can safely receive. */
5744 if (rsa
->actual_register_packet_size
== 0)
5745 rsa
->actual_register_packet_size
= buf_len
;
5747 /* If this is smaller than we guessed the 'g' packet would be,
5748 update our records. A 'g' reply that doesn't include a register's
5749 value implies either that the register is not available, or that
5750 the 'p' packet must be used. */
5751 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5753 rsa
->sizeof_g_packet
= buf_len
/ 2;
5755 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5757 if (rsa
->regs
[i
].pnum
== -1)
5760 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5761 rsa
->regs
[i
].in_g_packet
= 0;
5763 rsa
->regs
[i
].in_g_packet
= 1;
5767 regs
= alloca (rsa
->sizeof_g_packet
);
5769 /* Unimplemented registers read as all bits zero. */
5770 memset (regs
, 0, rsa
->sizeof_g_packet
);
5772 /* Reply describes registers byte by byte, each byte encoded as two
5773 hex characters. Suck them all up, then supply them to the
5774 register cacheing/storage mechanism. */
5777 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5779 if (p
[0] == 0 || p
[1] == 0)
5780 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5781 internal_error (__FILE__
, __LINE__
,
5782 _("unexpected end of 'g' packet reply"));
5784 if (p
[0] == 'x' && p
[1] == 'x')
5785 regs
[i
] = 0; /* 'x' */
5787 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5791 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5793 struct packet_reg
*r
= &rsa
->regs
[i
];
5797 if (r
->offset
* 2 >= strlen (rs
->buf
))
5798 /* This shouldn't happen - we adjusted in_g_packet above. */
5799 internal_error (__FILE__
, __LINE__
,
5800 _("unexpected end of 'g' packet reply"));
5801 else if (rs
->buf
[r
->offset
* 2] == 'x')
5803 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5804 /* The register isn't available, mark it as such (at
5805 the same time setting the value to zero). */
5806 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5809 regcache_raw_supply (regcache
, r
->regnum
,
5816 fetch_registers_using_g (struct regcache
*regcache
)
5819 process_g_packet (regcache
);
5822 /* Make the remote selected traceframe match GDB's selected
5826 set_remote_traceframe (void)
5830 if (remote_traceframe_number
== get_traceframe_number ())
5833 /* Avoid recursion, remote_trace_find calls us again. */
5834 remote_traceframe_number
= get_traceframe_number ();
5836 newnum
= target_trace_find (tfind_number
,
5837 get_traceframe_number (), 0, 0, NULL
);
5839 /* Should not happen. If it does, all bets are off. */
5840 if (newnum
!= get_traceframe_number ())
5841 warning (_("could not set remote traceframe"));
5845 remote_fetch_registers (struct target_ops
*ops
,
5846 struct regcache
*regcache
, int regnum
)
5848 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5851 set_remote_traceframe ();
5852 set_general_thread (inferior_ptid
);
5856 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5858 gdb_assert (reg
!= NULL
);
5860 /* If this register might be in the 'g' packet, try that first -
5861 we are likely to read more than one register. If this is the
5862 first 'g' packet, we might be overly optimistic about its
5863 contents, so fall back to 'p'. */
5864 if (reg
->in_g_packet
)
5866 fetch_registers_using_g (regcache
);
5867 if (reg
->in_g_packet
)
5871 if (fetch_register_using_p (regcache
, reg
))
5874 /* This register is not available. */
5875 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5880 fetch_registers_using_g (regcache
);
5882 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5883 if (!rsa
->regs
[i
].in_g_packet
)
5884 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5886 /* This register is not available. */
5887 regcache_raw_supply (regcache
, i
, NULL
);
5891 /* Prepare to store registers. Since we may send them all (using a
5892 'G' request), we have to read out the ones we don't want to change
5896 remote_prepare_to_store (struct regcache
*regcache
)
5898 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5900 gdb_byte buf
[MAX_REGISTER_SIZE
];
5902 /* Make sure the entire registers array is valid. */
5903 switch (remote_protocol_packets
[PACKET_P
].support
)
5905 case PACKET_DISABLE
:
5906 case PACKET_SUPPORT_UNKNOWN
:
5907 /* Make sure all the necessary registers are cached. */
5908 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5909 if (rsa
->regs
[i
].in_g_packet
)
5910 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5917 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5918 packet was not recognized. */
5921 store_register_using_P (const struct regcache
*regcache
,
5922 struct packet_reg
*reg
)
5924 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5925 struct remote_state
*rs
= get_remote_state ();
5926 /* Try storing a single register. */
5927 char *buf
= rs
->buf
;
5928 gdb_byte regp
[MAX_REGISTER_SIZE
];
5931 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
5934 if (reg
->pnum
== -1)
5937 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
5938 p
= buf
+ strlen (buf
);
5939 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
5940 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
5942 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5944 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
5949 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5950 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
5951 case PACKET_UNKNOWN
:
5954 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
5958 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5959 contents of the register cache buffer. FIXME: ignores errors. */
5962 store_registers_using_G (const struct regcache
*regcache
)
5964 struct remote_state
*rs
= get_remote_state ();
5965 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5969 /* Extract all the registers in the regcache copying them into a
5974 regs
= alloca (rsa
->sizeof_g_packet
);
5975 memset (regs
, 0, rsa
->sizeof_g_packet
);
5976 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5978 struct packet_reg
*r
= &rsa
->regs
[i
];
5981 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
5985 /* Command describes registers byte by byte,
5986 each byte encoded as two hex characters. */
5989 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5991 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
5993 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5994 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
5995 error (_("Could not write registers; remote failure reply '%s'"),
5999 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6000 of the register cache buffer. FIXME: ignores errors. */
6003 remote_store_registers (struct target_ops
*ops
,
6004 struct regcache
*regcache
, int regnum
)
6006 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6009 set_remote_traceframe ();
6010 set_general_thread (inferior_ptid
);
6014 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6016 gdb_assert (reg
!= NULL
);
6018 /* Always prefer to store registers using the 'P' packet if
6019 possible; we often change only a small number of registers.
6020 Sometimes we change a larger number; we'd need help from a
6021 higher layer to know to use 'G'. */
6022 if (store_register_using_P (regcache
, reg
))
6025 /* For now, don't complain if we have no way to write the
6026 register. GDB loses track of unavailable registers too
6027 easily. Some day, this may be an error. We don't have
6028 any way to read the register, either... */
6029 if (!reg
->in_g_packet
)
6032 store_registers_using_G (regcache
);
6036 store_registers_using_G (regcache
);
6038 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6039 if (!rsa
->regs
[i
].in_g_packet
)
6040 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6041 /* See above for why we do not issue an error here. */
6046 /* Return the number of hex digits in num. */
6049 hexnumlen (ULONGEST num
)
6053 for (i
= 0; num
!= 0; i
++)
6059 /* Set BUF to the minimum number of hex digits representing NUM. */
6062 hexnumstr (char *buf
, ULONGEST num
)
6064 int len
= hexnumlen (num
);
6066 return hexnumnstr (buf
, num
, len
);
6070 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6073 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6079 for (i
= width
- 1; i
>= 0; i
--)
6081 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6088 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6091 remote_address_masked (CORE_ADDR addr
)
6093 int address_size
= remote_address_size
;
6095 /* If "remoteaddresssize" was not set, default to target address size. */
6097 address_size
= gdbarch_addr_bit (target_gdbarch
);
6099 if (address_size
> 0
6100 && address_size
< (sizeof (ULONGEST
) * 8))
6102 /* Only create a mask when that mask can safely be constructed
6103 in a ULONGEST variable. */
6106 mask
= (mask
<< address_size
) - 1;
6112 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6113 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6114 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6115 (which may be more than *OUT_LEN due to escape characters). The
6116 total number of bytes in the output buffer will be at most
6120 remote_escape_output (const gdb_byte
*buffer
, int len
,
6121 gdb_byte
*out_buf
, int *out_len
,
6124 int input_index
, output_index
;
6127 for (input_index
= 0; input_index
< len
; input_index
++)
6129 gdb_byte b
= buffer
[input_index
];
6131 if (b
== '$' || b
== '#' || b
== '}')
6133 /* These must be escaped. */
6134 if (output_index
+ 2 > out_maxlen
)
6136 out_buf
[output_index
++] = '}';
6137 out_buf
[output_index
++] = b
^ 0x20;
6141 if (output_index
+ 1 > out_maxlen
)
6143 out_buf
[output_index
++] = b
;
6147 *out_len
= input_index
;
6148 return output_index
;
6151 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6152 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6153 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6155 This function reverses remote_escape_output. It allows more
6156 escaped characters than that function does, in particular because
6157 '*' must be escaped to avoid the run-length encoding processing
6158 in reading packets. */
6161 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6162 gdb_byte
*out_buf
, int out_maxlen
)
6164 int input_index
, output_index
;
6169 for (input_index
= 0; input_index
< len
; input_index
++)
6171 gdb_byte b
= buffer
[input_index
];
6173 if (output_index
+ 1 > out_maxlen
)
6175 warning (_("Received too much data from remote target;"
6176 " ignoring overflow."));
6177 return output_index
;
6182 out_buf
[output_index
++] = b
^ 0x20;
6188 out_buf
[output_index
++] = b
;
6192 error (_("Unmatched escape character in target response."));
6194 return output_index
;
6197 /* Determine whether the remote target supports binary downloading.
6198 This is accomplished by sending a no-op memory write of zero length
6199 to the target at the specified address. It does not suffice to send
6200 the whole packet, since many stubs strip the eighth bit and
6201 subsequently compute a wrong checksum, which causes real havoc with
6204 NOTE: This can still lose if the serial line is not eight-bit
6205 clean. In cases like this, the user should clear "remote
6209 check_binary_download (CORE_ADDR addr
)
6211 struct remote_state
*rs
= get_remote_state ();
6213 switch (remote_protocol_packets
[PACKET_X
].support
)
6215 case PACKET_DISABLE
:
6219 case PACKET_SUPPORT_UNKNOWN
:
6225 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6227 p
+= hexnumstr (p
, (ULONGEST
) 0);
6231 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6232 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6234 if (rs
->buf
[0] == '\0')
6237 fprintf_unfiltered (gdb_stdlog
,
6238 "binary downloading NOT "
6239 "supported by target\n");
6240 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6245 fprintf_unfiltered (gdb_stdlog
,
6246 "binary downloading supported by target\n");
6247 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6254 /* Write memory data directly to the remote machine.
6255 This does not inform the data cache; the data cache uses this.
6256 HEADER is the starting part of the packet.
6257 MEMADDR is the address in the remote memory space.
6258 MYADDR is the address of the buffer in our space.
6259 LEN is the number of bytes.
6260 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6261 should send data as binary ('X'), or hex-encoded ('M').
6263 The function creates packet of the form
6264 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6266 where encoding of <DATA> is termined by PACKET_FORMAT.
6268 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6271 Returns the number of bytes transferred, or 0 (setting errno) for
6272 error. Only transfer a single packet. */
6275 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6276 const gdb_byte
*myaddr
, int len
,
6277 char packet_format
, int use_length
)
6279 struct remote_state
*rs
= get_remote_state ();
6289 if (packet_format
!= 'X' && packet_format
!= 'M')
6290 internal_error (__FILE__
, __LINE__
,
6291 _("remote_write_bytes_aux: bad packet format"));
6296 payload_size
= get_memory_write_packet_size ();
6298 /* The packet buffer will be large enough for the payload;
6299 get_memory_packet_size ensures this. */
6302 /* Compute the size of the actual payload by subtracting out the
6303 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6305 payload_size
-= strlen ("$,:#NN");
6307 /* The comma won't be used. */
6309 header_length
= strlen (header
);
6310 payload_size
-= header_length
;
6311 payload_size
-= hexnumlen (memaddr
);
6313 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6315 strcat (rs
->buf
, header
);
6316 p
= rs
->buf
+ strlen (header
);
6318 /* Compute a best guess of the number of bytes actually transfered. */
6319 if (packet_format
== 'X')
6321 /* Best guess at number of bytes that will fit. */
6322 todo
= min (len
, payload_size
);
6324 payload_size
-= hexnumlen (todo
);
6325 todo
= min (todo
, payload_size
);
6329 /* Num bytes that will fit. */
6330 todo
= min (len
, payload_size
/ 2);
6332 payload_size
-= hexnumlen (todo
);
6333 todo
= min (todo
, payload_size
/ 2);
6337 internal_error (__FILE__
, __LINE__
,
6338 _("minumum packet size too small to write data"));
6340 /* If we already need another packet, then try to align the end
6341 of this packet to a useful boundary. */
6342 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6343 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6345 /* Append "<memaddr>". */
6346 memaddr
= remote_address_masked (memaddr
);
6347 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6354 /* Append <len>. Retain the location/size of <len>. It may need to
6355 be adjusted once the packet body has been created. */
6357 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6365 /* Append the packet body. */
6366 if (packet_format
== 'X')
6368 /* Binary mode. Send target system values byte by byte, in
6369 increasing byte addresses. Only escape certain critical
6371 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6374 /* If not all TODO bytes fit, then we'll need another packet. Make
6375 a second try to keep the end of the packet aligned. Don't do
6376 this if the packet is tiny. */
6377 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6381 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6383 if (new_nr_bytes
!= nr_bytes
)
6384 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6389 p
+= payload_length
;
6390 if (use_length
&& nr_bytes
< todo
)
6392 /* Escape chars have filled up the buffer prematurely,
6393 and we have actually sent fewer bytes than planned.
6394 Fix-up the length field of the packet. Use the same
6395 number of characters as before. */
6396 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6397 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6402 /* Normal mode: Send target system values byte by byte, in
6403 increasing byte addresses. Each byte is encoded as a two hex
6405 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6409 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6410 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6412 if (rs
->buf
[0] == 'E')
6414 /* There is no correspondance between what the remote protocol
6415 uses for errors and errno codes. We would like a cleaner way
6416 of representing errors (big enough to include errno codes,
6417 bfd_error codes, and others). But for now just return EIO. */
6422 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6423 fewer bytes than we'd planned. */
6427 /* Write memory data directly to the remote machine.
6428 This does not inform the data cache; the data cache uses this.
6429 MEMADDR is the address in the remote memory space.
6430 MYADDR is the address of the buffer in our space.
6431 LEN is the number of bytes.
6433 Returns number of bytes transferred, or 0 (setting errno) for
6434 error. Only transfer a single packet. */
6437 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6439 char *packet_format
= 0;
6441 /* Check whether the target supports binary download. */
6442 check_binary_download (memaddr
);
6444 switch (remote_protocol_packets
[PACKET_X
].support
)
6447 packet_format
= "X";
6449 case PACKET_DISABLE
:
6450 packet_format
= "M";
6452 case PACKET_SUPPORT_UNKNOWN
:
6453 internal_error (__FILE__
, __LINE__
,
6454 _("remote_write_bytes: bad internal state"));
6456 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6459 return remote_write_bytes_aux (packet_format
,
6460 memaddr
, myaddr
, len
, packet_format
[0], 1);
6463 /* Read memory data directly from the remote machine.
6464 This does not use the data cache; the data cache uses this.
6465 MEMADDR is the address in the remote memory space.
6466 MYADDR is the address of the buffer in our space.
6467 LEN is the number of bytes.
6469 Returns number of bytes transferred, or 0 for error. */
6472 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6474 struct remote_state
*rs
= get_remote_state ();
6475 int max_buf_size
; /* Max size of packet output buffer. */
6483 max_buf_size
= get_memory_read_packet_size ();
6484 /* The packet buffer will be large enough for the payload;
6485 get_memory_packet_size ensures this. */
6487 /* Number if bytes that will fit. */
6488 todo
= min (len
, max_buf_size
/ 2);
6490 /* Construct "m"<memaddr>","<len>". */
6491 memaddr
= remote_address_masked (memaddr
);
6494 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6496 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6499 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6500 if (rs
->buf
[0] == 'E'
6501 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6502 && rs
->buf
[3] == '\0')
6504 /* There is no correspondance between what the remote protocol
6505 uses for errors and errno codes. We would like a cleaner way
6506 of representing errors (big enough to include errno codes,
6507 bfd_error codes, and others). But for now just return
6512 /* Reply describes memory byte by byte, each byte encoded as two hex
6515 i
= hex2bin (p
, myaddr
, todo
);
6516 /* Return what we have. Let higher layers handle partial reads. */
6521 /* Remote notification handler. */
6524 handle_notification (char *buf
, size_t length
)
6526 if (strncmp (buf
, "Stop:", 5) == 0)
6528 if (pending_stop_reply
)
6530 /* We've already parsed the in-flight stop-reply, but the
6531 stub for some reason thought we didn't, possibly due to
6532 timeout on its side. Just ignore it. */
6534 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6538 struct cleanup
*old_chain
;
6539 struct stop_reply
*reply
= stop_reply_xmalloc ();
6541 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6543 remote_parse_stop_reply (buf
+ 5, reply
);
6545 discard_cleanups (old_chain
);
6547 /* Be careful to only set it after parsing, since an error
6548 may be thrown then. */
6549 pending_stop_reply
= reply
;
6551 /* Notify the event loop there's a stop reply to acknowledge
6552 and that there may be more events to fetch. */
6553 mark_async_event_handler (remote_async_get_pending_events_token
);
6556 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6560 /* We ignore notifications we don't recognize, for compatibility
6561 with newer stubs. */
6566 /* Read or write LEN bytes from inferior memory at MEMADDR,
6567 transferring to or from debugger address BUFFER. Write to inferior
6568 if SHOULD_WRITE is nonzero. Returns length of data written or
6569 read; 0 for error. TARGET is unused. */
6572 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6573 int should_write
, struct mem_attrib
*attrib
,
6574 struct target_ops
*target
)
6578 set_remote_traceframe ();
6579 set_general_thread (inferior_ptid
);
6582 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6584 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6589 /* Sends a packet with content determined by the printf format string
6590 FORMAT and the remaining arguments, then gets the reply. Returns
6591 whether the packet was a success, a failure, or unknown. */
6593 static enum packet_result
6594 remote_send_printf (const char *format
, ...)
6596 struct remote_state
*rs
= get_remote_state ();
6597 int max_size
= get_remote_packet_size ();
6600 va_start (ap
, format
);
6603 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6604 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6606 if (putpkt (rs
->buf
) < 0)
6607 error (_("Communication problem with target."));
6610 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6612 return packet_check_result (rs
->buf
);
6616 restore_remote_timeout (void *p
)
6618 int value
= *(int *)p
;
6620 remote_timeout
= value
;
6623 /* Flash writing can take quite some time. We'll set
6624 effectively infinite timeout for flash operations.
6625 In future, we'll need to decide on a better approach. */
6626 static const int remote_flash_timeout
= 1000;
6629 remote_flash_erase (struct target_ops
*ops
,
6630 ULONGEST address
, LONGEST length
)
6632 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6633 int saved_remote_timeout
= remote_timeout
;
6634 enum packet_result ret
;
6635 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6636 &saved_remote_timeout
);
6638 remote_timeout
= remote_flash_timeout
;
6640 ret
= remote_send_printf ("vFlashErase:%s,%s",
6641 phex (address
, addr_size
),
6645 case PACKET_UNKNOWN
:
6646 error (_("Remote target does not support flash erase"));
6648 error (_("Error erasing flash with vFlashErase packet"));
6653 do_cleanups (back_to
);
6657 remote_flash_write (struct target_ops
*ops
,
6658 ULONGEST address
, LONGEST length
,
6659 const gdb_byte
*data
)
6661 int saved_remote_timeout
= remote_timeout
;
6663 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6664 &saved_remote_timeout
);
6666 remote_timeout
= remote_flash_timeout
;
6667 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6668 do_cleanups (back_to
);
6674 remote_flash_done (struct target_ops
*ops
)
6676 int saved_remote_timeout
= remote_timeout
;
6678 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6679 &saved_remote_timeout
);
6681 remote_timeout
= remote_flash_timeout
;
6682 ret
= remote_send_printf ("vFlashDone");
6683 do_cleanups (back_to
);
6687 case PACKET_UNKNOWN
:
6688 error (_("Remote target does not support vFlashDone"));
6690 error (_("Error finishing flash operation"));
6697 remote_files_info (struct target_ops
*ignore
)
6699 puts_filtered ("Debugging a target over a serial line.\n");
6702 /* Stuff for dealing with the packets which are part of this protocol.
6703 See comment at top of file for details. */
6705 /* Read a single character from the remote end. */
6708 readchar (int timeout
)
6712 ch
= serial_readchar (remote_desc
, timeout
);
6717 switch ((enum serial_rc
) ch
)
6721 error (_("Remote connection closed"));
6725 perror_with_name (_("Remote communication error. "
6726 "Target disconnected."));
6728 case SERIAL_TIMEOUT
:
6734 /* Send the command in *BUF to the remote machine, and read the reply
6735 into *BUF. Report an error if we get an error reply. Resize
6736 *BUF using xrealloc if necessary to hold the result, and update
6740 remote_send (char **buf
,
6744 getpkt (buf
, sizeof_buf
, 0);
6746 if ((*buf
)[0] == 'E')
6747 error (_("Remote failure reply: %s"), *buf
);
6750 /* Return a pointer to an xmalloc'ed string representing an escaped
6751 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6752 etc. The caller is responsible for releasing the returned
6756 escape_buffer (const char *buf
, int n
)
6758 struct cleanup
*old_chain
;
6759 struct ui_file
*stb
;
6762 stb
= mem_fileopen ();
6763 old_chain
= make_cleanup_ui_file_delete (stb
);
6765 fputstrn_unfiltered (buf
, n
, 0, stb
);
6766 str
= ui_file_xstrdup (stb
, NULL
);
6767 do_cleanups (old_chain
);
6771 /* Display a null-terminated packet on stdout, for debugging, using C
6775 print_packet (char *buf
)
6777 puts_filtered ("\"");
6778 fputstr_filtered (buf
, '"', gdb_stdout
);
6779 puts_filtered ("\"");
6785 return putpkt_binary (buf
, strlen (buf
));
6788 /* Send a packet to the remote machine, with error checking. The data
6789 of the packet is in BUF. The string in BUF can be at most
6790 get_remote_packet_size () - 5 to account for the $, # and checksum,
6791 and for a possible /0 if we are debugging (remote_debug) and want
6792 to print the sent packet as a string. */
6795 putpkt_binary (char *buf
, int cnt
)
6797 struct remote_state
*rs
= get_remote_state ();
6799 unsigned char csum
= 0;
6800 char *buf2
= alloca (cnt
+ 6);
6806 /* Catch cases like trying to read memory or listing threads while
6807 we're waiting for a stop reply. The remote server wouldn't be
6808 ready to handle this request, so we'd hang and timeout. We don't
6809 have to worry about this in synchronous mode, because in that
6810 case it's not possible to issue a command while the target is
6811 running. This is not a problem in non-stop mode, because in that
6812 case, the stub is always ready to process serial input. */
6813 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6814 error (_("Cannot execute this command while the target is running."));
6816 /* We're sending out a new packet. Make sure we don't look at a
6817 stale cached response. */
6818 rs
->cached_wait_status
= 0;
6820 /* Copy the packet into buffer BUF2, encapsulating it
6821 and giving it a checksum. */
6826 for (i
= 0; i
< cnt
; i
++)
6832 *p
++ = tohex ((csum
>> 4) & 0xf);
6833 *p
++ = tohex (csum
& 0xf);
6835 /* Send it over and over until we get a positive ack. */
6839 int started_error_output
= 0;
6843 struct cleanup
*old_chain
;
6847 str
= escape_buffer (buf2
, p
- buf2
);
6848 old_chain
= make_cleanup (xfree
, str
);
6849 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6850 gdb_flush (gdb_stdlog
);
6851 do_cleanups (old_chain
);
6853 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6854 perror_with_name (_("putpkt: write failed"));
6856 /* If this is a no acks version of the remote protocol, send the
6857 packet and move on. */
6861 /* Read until either a timeout occurs (-2) or '+' is read.
6862 Handle any notification that arrives in the mean time. */
6865 ch
= readchar (remote_timeout
);
6873 case SERIAL_TIMEOUT
:
6876 if (started_error_output
)
6878 putchar_unfiltered ('\n');
6879 started_error_output
= 0;
6888 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6892 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6894 case SERIAL_TIMEOUT
:
6898 break; /* Retransmit buffer. */
6902 fprintf_unfiltered (gdb_stdlog
,
6903 "Packet instead of Ack, ignoring it\n");
6904 /* It's probably an old response sent because an ACK
6905 was lost. Gobble up the packet and ack it so it
6906 doesn't get retransmitted when we resend this
6909 serial_write (remote_desc
, "+", 1);
6910 continue; /* Now, go look for +. */
6917 /* If we got a notification, handle it, and go back to looking
6919 /* We've found the start of a notification. Now
6920 collect the data. */
6921 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6926 struct cleanup
*old_chain
;
6929 str
= escape_buffer (rs
->buf
, val
);
6930 old_chain
= make_cleanup (xfree
, str
);
6931 fprintf_unfiltered (gdb_stdlog
,
6932 " Notification received: %s\n",
6934 do_cleanups (old_chain
);
6936 handle_notification (rs
->buf
, val
);
6937 /* We're in sync now, rewait for the ack. */
6944 if (!started_error_output
)
6946 started_error_output
= 1;
6947 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6949 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6950 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6959 if (!started_error_output
)
6961 started_error_output
= 1;
6962 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6964 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6968 break; /* Here to retransmit. */
6972 /* This is wrong. If doing a long backtrace, the user should be
6973 able to get out next time we call QUIT, without anything as
6974 violent as interrupt_query. If we want to provide a way out of
6975 here without getting to the next QUIT, it should be based on
6976 hitting ^C twice as in remote_wait. */
6987 /* Come here after finding the start of a frame when we expected an
6988 ack. Do our best to discard the rest of this packet. */
6997 c
= readchar (remote_timeout
);
7000 case SERIAL_TIMEOUT
:
7001 /* Nothing we can do. */
7004 /* Discard the two bytes of checksum and stop. */
7005 c
= readchar (remote_timeout
);
7007 c
= readchar (remote_timeout
);
7010 case '*': /* Run length encoding. */
7011 /* Discard the repeat count. */
7012 c
= readchar (remote_timeout
);
7017 /* A regular character. */
7023 /* Come here after finding the start of the frame. Collect the rest
7024 into *BUF, verifying the checksum, length, and handling run-length
7025 compression. NUL terminate the buffer. If there is not enough room,
7026 expand *BUF using xrealloc.
7028 Returns -1 on error, number of characters in buffer (ignoring the
7029 trailing NULL) on success. (could be extended to return one of the
7030 SERIAL status indications). */
7033 read_frame (char **buf_p
,
7040 struct remote_state
*rs
= get_remote_state ();
7047 c
= readchar (remote_timeout
);
7050 case SERIAL_TIMEOUT
:
7052 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7056 fputs_filtered ("Saw new packet start in middle of old one\n",
7058 return -1; /* Start a new packet, count retries. */
7061 unsigned char pktcsum
;
7067 check_0
= readchar (remote_timeout
);
7069 check_1
= readchar (remote_timeout
);
7071 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7074 fputs_filtered ("Timeout in checksum, retrying\n",
7078 else if (check_0
< 0 || check_1
< 0)
7081 fputs_filtered ("Communication error in checksum\n",
7086 /* Don't recompute the checksum; with no ack packets we
7087 don't have any way to indicate a packet retransmission
7092 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7093 if (csum
== pktcsum
)
7098 struct cleanup
*old_chain
;
7101 str
= escape_buffer (buf
, bc
);
7102 old_chain
= make_cleanup (xfree
, str
);
7103 fprintf_unfiltered (gdb_stdlog
,
7104 "Bad checksum, sentsum=0x%x, "
7105 "csum=0x%x, buf=%s\n",
7106 pktcsum
, csum
, str
);
7107 do_cleanups (old_chain
);
7109 /* Number of characters in buffer ignoring trailing
7113 case '*': /* Run length encoding. */
7118 c
= readchar (remote_timeout
);
7120 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7122 /* The character before ``*'' is repeated. */
7124 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7126 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7128 /* Make some more room in the buffer. */
7129 *sizeof_buf
+= repeat
;
7130 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7134 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7140 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7144 if (bc
>= *sizeof_buf
- 1)
7146 /* Make some more room in the buffer. */
7148 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7159 /* Read a packet from the remote machine, with error checking, and
7160 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7161 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7162 rather than timing out; this is used (in synchronous mode) to wait
7163 for a target that is is executing user code to stop. */
7164 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7165 don't have to change all the calls to getpkt to deal with the
7166 return value, because at the moment I don't know what the right
7167 thing to do it for those. */
7175 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7179 /* Read a packet from the remote machine, with error checking, and
7180 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7181 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7182 rather than timing out; this is used (in synchronous mode) to wait
7183 for a target that is is executing user code to stop. If FOREVER ==
7184 0, this function is allowed to time out gracefully and return an
7185 indication of this to the caller. Otherwise return the number of
7186 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7187 enough reason to return to the caller. */
7190 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7191 int expecting_notif
)
7193 struct remote_state
*rs
= get_remote_state ();
7199 /* We're reading a new response. Make sure we don't look at a
7200 previously cached response. */
7201 rs
->cached_wait_status
= 0;
7203 strcpy (*buf
, "timeout");
7206 timeout
= watchdog
> 0 ? watchdog
: -1;
7207 else if (expecting_notif
)
7208 timeout
= 0; /* There should already be a char in the buffer. If
7211 timeout
= remote_timeout
;
7215 /* Process any number of notifications, and then return when
7219 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7221 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7223 /* This can loop forever if the remote side sends us
7224 characters continuously, but if it pauses, we'll get
7225 SERIAL_TIMEOUT from readchar because of timeout. Then
7226 we'll count that as a retry.
7228 Note that even when forever is set, we will only wait
7229 forever prior to the start of a packet. After that, we
7230 expect characters to arrive at a brisk pace. They should
7231 show up within remote_timeout intervals. */
7233 c
= readchar (timeout
);
7234 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7236 if (c
== SERIAL_TIMEOUT
)
7238 if (expecting_notif
)
7239 return -1; /* Don't complain, it's normal to not get
7240 anything in this case. */
7242 if (forever
) /* Watchdog went off? Kill the target. */
7246 error (_("Watchdog timeout has expired. Target detached."));
7249 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7253 /* We've found the start of a packet or notification.
7254 Now collect the data. */
7255 val
= read_frame (buf
, sizeof_buf
);
7260 serial_write (remote_desc
, "-", 1);
7263 if (tries
> MAX_TRIES
)
7265 /* We have tried hard enough, and just can't receive the
7266 packet/notification. Give up. */
7267 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7269 /* Skip the ack char if we're in no-ack mode. */
7270 if (!rs
->noack_mode
)
7271 serial_write (remote_desc
, "+", 1);
7275 /* If we got an ordinary packet, return that to our caller. */
7280 struct cleanup
*old_chain
;
7283 str
= escape_buffer (*buf
, val
);
7284 old_chain
= make_cleanup (xfree
, str
);
7285 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7286 do_cleanups (old_chain
);
7289 /* Skip the ack char if we're in no-ack mode. */
7290 if (!rs
->noack_mode
)
7291 serial_write (remote_desc
, "+", 1);
7295 /* If we got a notification, handle it, and go back to looking
7299 gdb_assert (c
== '%');
7303 struct cleanup
*old_chain
;
7306 str
= escape_buffer (*buf
, val
);
7307 old_chain
= make_cleanup (xfree
, str
);
7308 fprintf_unfiltered (gdb_stdlog
,
7309 " Notification received: %s\n",
7311 do_cleanups (old_chain
);
7314 handle_notification (*buf
, val
);
7316 /* Notifications require no acknowledgement. */
7318 if (expecting_notif
)
7325 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7327 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7331 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7333 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7338 remote_kill (struct target_ops
*ops
)
7340 /* Use catch_errors so the user can quit from gdb even when we
7341 aren't on speaking terms with the remote system. */
7342 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
7344 /* Don't wait for it to die. I'm not really sure it matters whether
7345 we do or not. For the existing stubs, kill is a noop. */
7346 target_mourn_inferior ();
7350 remote_vkill (int pid
, struct remote_state
*rs
)
7352 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7355 /* Tell the remote target to detach. */
7356 sprintf (rs
->buf
, "vKill;%x", pid
);
7358 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7360 if (packet_ok (rs
->buf
,
7361 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7363 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7370 extended_remote_kill (struct target_ops
*ops
)
7373 int pid
= ptid_get_pid (inferior_ptid
);
7374 struct remote_state
*rs
= get_remote_state ();
7376 res
= remote_vkill (pid
, rs
);
7377 if (res
== -1 && !remote_multi_process_p (rs
))
7379 /* Don't try 'k' on a multi-process aware stub -- it has no way
7380 to specify the pid. */
7384 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7385 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7388 /* Don't wait for it to die. I'm not really sure it matters whether
7389 we do or not. For the existing stubs, kill is a noop. */
7395 error (_("Can't kill process"));
7397 target_mourn_inferior ();
7401 remote_mourn (struct target_ops
*ops
)
7403 remote_mourn_1 (ops
);
7406 /* Worker function for remote_mourn. */
7408 remote_mourn_1 (struct target_ops
*target
)
7410 unpush_target (target
);
7412 /* remote_close takes care of doing most of the clean up. */
7413 generic_mourn_inferior ();
7417 extended_remote_mourn_1 (struct target_ops
*target
)
7419 struct remote_state
*rs
= get_remote_state ();
7421 /* In case we got here due to an error, but we're going to stay
7423 rs
->waiting_for_stop_reply
= 0;
7425 /* We're no longer interested in these events. */
7426 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7428 /* If the current general thread belonged to the process we just
7429 detached from or has exited, the remote side current general
7430 thread becomes undefined. Considering a case like this:
7432 - We just got here due to a detach.
7433 - The process that we're detaching from happens to immediately
7434 report a global breakpoint being hit in non-stop mode, in the
7435 same thread we had selected before.
7436 - GDB attaches to this process again.
7437 - This event happens to be the next event we handle.
7439 GDB would consider that the current general thread didn't need to
7440 be set on the stub side (with Hg), since for all it knew,
7441 GENERAL_THREAD hadn't changed.
7443 Notice that although in all-stop mode, the remote server always
7444 sets the current thread to the thread reporting the stop event,
7445 that doesn't happen in non-stop mode; in non-stop, the stub *must
7446 not* change the current thread when reporting a breakpoint hit,
7447 due to the decoupling of event reporting and event handling.
7449 To keep things simple, we always invalidate our notion of the
7451 record_currthread (minus_one_ptid
);
7453 /* Unlike "target remote", we do not want to unpush the target; then
7454 the next time the user says "run", we won't be connected. */
7456 /* Call common code to mark the inferior as not running. */
7457 generic_mourn_inferior ();
7459 if (!have_inferiors ())
7461 if (!remote_multi_process_p (rs
))
7463 /* Check whether the target is running now - some remote stubs
7464 automatically restart after kill. */
7466 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7468 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7470 /* Assume that the target has been restarted. Set
7471 inferior_ptid so that bits of core GDB realizes
7472 there's something here, e.g., so that the user can
7473 say "kill" again. */
7474 inferior_ptid
= magic_null_ptid
;
7481 extended_remote_mourn (struct target_ops
*ops
)
7483 extended_remote_mourn_1 (ops
);
7487 extended_remote_run (char *args
)
7489 struct remote_state
*rs
= get_remote_state ();
7492 /* If the user has disabled vRun support, or we have detected that
7493 support is not available, do not try it. */
7494 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7497 strcpy (rs
->buf
, "vRun;");
7498 len
= strlen (rs
->buf
);
7500 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7501 error (_("Remote file name too long for run packet"));
7502 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7504 gdb_assert (args
!= NULL
);
7507 struct cleanup
*back_to
;
7511 argv
= gdb_buildargv (args
);
7512 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7513 for (i
= 0; argv
[i
] != NULL
; i
++)
7515 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7516 error (_("Argument list too long for run packet"));
7517 rs
->buf
[len
++] = ';';
7518 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7520 do_cleanups (back_to
);
7523 rs
->buf
[len
++] = '\0';
7526 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7528 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7530 /* We have a wait response; we don't need it, though. All is well. */
7533 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7534 /* It wasn't disabled before, but it is now. */
7538 if (remote_exec_file
[0] == '\0')
7539 error (_("Running the default executable on the remote target failed; "
7540 "try \"set remote exec-file\"?"));
7542 error (_("Running \"%s\" on the remote target failed"),
7547 /* In the extended protocol we want to be able to do things like
7548 "run" and have them basically work as expected. So we need
7549 a special create_inferior function. We support changing the
7550 executable file and the command line arguments, but not the
7554 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7555 char **env
, int from_tty
)
7557 /* If running asynchronously, register the target file descriptor
7558 with the event loop. */
7559 if (target_can_async_p ())
7560 target_async (inferior_event_handler
, 0);
7562 /* Now restart the remote server. */
7563 if (extended_remote_run (args
) == -1)
7565 /* vRun was not supported. Fail if we need it to do what the
7567 if (remote_exec_file
[0])
7568 error (_("Remote target does not support \"set remote exec-file\""));
7570 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7572 /* Fall back to "R". */
7573 extended_remote_restart ();
7576 if (!have_inferiors ())
7578 /* Clean up from the last time we ran, before we mark the target
7579 running again. This will mark breakpoints uninserted, and
7580 get_offsets may insert breakpoints. */
7581 init_thread_list ();
7582 init_wait_for_inferior ();
7585 /* Now mark the inferior as running before we do anything else. */
7586 inferior_ptid
= magic_null_ptid
;
7588 /* Now, if we have thread information, update inferior_ptid. */
7589 inferior_ptid
= remote_current_thread (inferior_ptid
);
7591 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7592 add_thread_silent (inferior_ptid
);
7594 /* Get updated offsets, if the stub uses qOffsets. */
7599 extended_remote_create_inferior (struct target_ops
*ops
,
7600 char *exec_file
, char *args
,
7601 char **env
, int from_tty
)
7603 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7607 /* Insert a breakpoint. On targets that have software breakpoint
7608 support, we ask the remote target to do the work; on targets
7609 which don't, we insert a traditional memory breakpoint. */
7612 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7613 struct bp_target_info
*bp_tgt
)
7615 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7616 If it succeeds, then set the support to PACKET_ENABLE. If it
7617 fails, and the user has explicitly requested the Z support then
7618 report an error, otherwise, mark it disabled and go on. */
7620 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7622 CORE_ADDR addr
= bp_tgt
->placed_address
;
7623 struct remote_state
*rs
;
7627 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7629 rs
= get_remote_state ();
7635 addr
= (ULONGEST
) remote_address_masked (addr
);
7636 p
+= hexnumstr (p
, addr
);
7637 sprintf (p
, ",%d", bpsize
);
7640 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7642 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7647 bp_tgt
->placed_address
= addr
;
7648 bp_tgt
->placed_size
= bpsize
;
7650 case PACKET_UNKNOWN
:
7655 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7659 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7660 struct bp_target_info
*bp_tgt
)
7662 CORE_ADDR addr
= bp_tgt
->placed_address
;
7663 struct remote_state
*rs
= get_remote_state ();
7665 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7673 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7674 p
+= hexnumstr (p
, addr
);
7675 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7678 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7680 return (rs
->buf
[0] == 'E');
7683 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7687 watchpoint_to_Z_packet (int type
)
7692 return Z_PACKET_WRITE_WP
;
7695 return Z_PACKET_READ_WP
;
7698 return Z_PACKET_ACCESS_WP
;
7701 internal_error (__FILE__
, __LINE__
,
7702 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7707 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
7708 struct expression
*cond
)
7710 struct remote_state
*rs
= get_remote_state ();
7712 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7714 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7717 sprintf (rs
->buf
, "Z%x,", packet
);
7718 p
= strchr (rs
->buf
, '\0');
7719 addr
= remote_address_masked (addr
);
7720 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7721 sprintf (p
, ",%x", len
);
7724 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7726 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7730 case PACKET_UNKNOWN
:
7735 internal_error (__FILE__
, __LINE__
,
7736 _("remote_insert_watchpoint: reached end of function"));
7741 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
7742 struct expression
*cond
)
7744 struct remote_state
*rs
= get_remote_state ();
7746 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7748 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7751 sprintf (rs
->buf
, "z%x,", packet
);
7752 p
= strchr (rs
->buf
, '\0');
7753 addr
= remote_address_masked (addr
);
7754 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7755 sprintf (p
, ",%x", len
);
7757 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7759 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7762 case PACKET_UNKNOWN
:
7767 internal_error (__FILE__
, __LINE__
,
7768 _("remote_remove_watchpoint: reached end of function"));
7772 int remote_hw_watchpoint_limit
= -1;
7773 int remote_hw_watchpoint_length_limit
= -1;
7774 int remote_hw_breakpoint_limit
= -1;
7777 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
7779 if (remote_hw_watchpoint_length_limit
== 0)
7781 else if (remote_hw_watchpoint_length_limit
< 0)
7783 else if (len
<= remote_hw_watchpoint_length_limit
)
7790 remote_check_watch_resources (int type
, int cnt
, int ot
)
7792 if (type
== bp_hardware_breakpoint
)
7794 if (remote_hw_breakpoint_limit
== 0)
7796 else if (remote_hw_breakpoint_limit
< 0)
7798 else if (cnt
<= remote_hw_breakpoint_limit
)
7803 if (remote_hw_watchpoint_limit
== 0)
7805 else if (remote_hw_watchpoint_limit
< 0)
7809 else if (cnt
<= remote_hw_watchpoint_limit
)
7816 remote_stopped_by_watchpoint (void)
7818 return remote_stopped_by_watchpoint_p
;
7822 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7826 if (remote_stopped_by_watchpoint ())
7828 *addr_p
= remote_watch_data_address
;
7837 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7838 struct bp_target_info
*bp_tgt
)
7841 struct remote_state
*rs
;
7844 /* The length field should be set to the size of a breakpoint
7845 instruction, even though we aren't inserting one ourselves. */
7847 gdbarch_remote_breakpoint_from_pc
7848 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7850 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7853 rs
= get_remote_state ();
7860 addr
= remote_address_masked (bp_tgt
->placed_address
);
7861 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7862 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7865 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7867 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7870 case PACKET_UNKNOWN
:
7875 internal_error (__FILE__
, __LINE__
,
7876 _("remote_insert_hw_breakpoint: reached end of function"));
7881 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7882 struct bp_target_info
*bp_tgt
)
7885 struct remote_state
*rs
= get_remote_state ();
7888 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7895 addr
= remote_address_masked (bp_tgt
->placed_address
);
7896 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7897 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7900 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7902 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7905 case PACKET_UNKNOWN
:
7910 internal_error (__FILE__
, __LINE__
,
7911 _("remote_remove_hw_breakpoint: reached end of function"));
7914 /* Table used by the crc32 function to calcuate the checksum. */
7916 static unsigned long crc32_table
[256] =
7919 static unsigned long
7920 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
7922 if (!crc32_table
[1])
7924 /* Initialize the CRC table and the decoding table. */
7928 for (i
= 0; i
< 256; i
++)
7930 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7931 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7938 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7944 /* Verify memory using the "qCRC:" request. */
7947 remote_verify_memory (struct target_ops
*ops
,
7948 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
7950 struct remote_state
*rs
= get_remote_state ();
7951 unsigned long host_crc
, target_crc
;
7954 /* FIXME: assumes lma can fit into long. */
7955 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7956 (long) lma
, (long) size
);
7959 /* Be clever; compute the host_crc before waiting for target
7961 host_crc
= crc32 (data
, size
, 0xffffffff);
7963 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7964 if (rs
->buf
[0] == 'E')
7967 if (rs
->buf
[0] != 'C')
7968 error (_("remote target does not support this operation"));
7970 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7971 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7973 return (host_crc
== target_crc
);
7976 /* compare-sections command
7978 With no arguments, compares each loadable section in the exec bfd
7979 with the same memory range on the target, and reports mismatches.
7980 Useful for verifying the image on the target against the exec file. */
7983 compare_sections_command (char *args
, int from_tty
)
7986 struct cleanup
*old_chain
;
7988 const char *sectname
;
7996 error (_("command cannot be used without an exec file"));
7998 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8000 if (!(s
->flags
& SEC_LOAD
))
8001 continue; /* Skip non-loadable section. */
8003 size
= bfd_get_section_size (s
);
8005 continue; /* Skip zero-length section. */
8007 sectname
= bfd_get_section_name (exec_bfd
, s
);
8008 if (args
&& strcmp (args
, sectname
) != 0)
8009 continue; /* Not the section selected by user. */
8011 matched
= 1; /* Do this section. */
8014 sectdata
= xmalloc (size
);
8015 old_chain
= make_cleanup (xfree
, sectdata
);
8016 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8018 res
= target_verify_memory (sectdata
, lma
, size
);
8021 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8022 paddress (target_gdbarch
, lma
),
8023 paddress (target_gdbarch
, lma
+ size
));
8025 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8026 paddress (target_gdbarch
, lma
),
8027 paddress (target_gdbarch
, lma
+ size
));
8029 printf_filtered ("matched.\n");
8032 printf_filtered ("MIS-MATCHED!\n");
8036 do_cleanups (old_chain
);
8039 warning (_("One or more sections of the remote executable does not match\n\
8040 the loaded file\n"));
8041 if (args
&& !matched
)
8042 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8045 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8046 into remote target. The number of bytes written to the remote
8047 target is returned, or -1 for error. */
8050 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8051 const char *annex
, const gdb_byte
*writebuf
,
8052 ULONGEST offset
, LONGEST len
,
8053 struct packet_config
*packet
)
8057 struct remote_state
*rs
= get_remote_state ();
8058 int max_size
= get_memory_write_packet_size ();
8060 if (packet
->support
== PACKET_DISABLE
)
8063 /* Insert header. */
8064 i
= snprintf (rs
->buf
, max_size
,
8065 "qXfer:%s:write:%s:%s:",
8066 object_name
, annex
? annex
: "",
8067 phex_nz (offset
, sizeof offset
));
8068 max_size
-= (i
+ 1);
8070 /* Escape as much data as fits into rs->buf. */
8071 buf_len
= remote_escape_output
8072 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8074 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8075 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8076 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8079 unpack_varlen_hex (rs
->buf
, &n
);
8083 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8084 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8085 number of bytes read is returned, or 0 for EOF, or -1 for error.
8086 The number of bytes read may be less than LEN without indicating an
8087 EOF. PACKET is checked and updated to indicate whether the remote
8088 target supports this object. */
8091 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8093 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8094 struct packet_config
*packet
)
8096 static char *finished_object
;
8097 static char *finished_annex
;
8098 static ULONGEST finished_offset
;
8100 struct remote_state
*rs
= get_remote_state ();
8101 LONGEST i
, n
, packet_len
;
8103 if (packet
->support
== PACKET_DISABLE
)
8106 /* Check whether we've cached an end-of-object packet that matches
8108 if (finished_object
)
8110 if (strcmp (object_name
, finished_object
) == 0
8111 && strcmp (annex
? annex
: "", finished_annex
) == 0
8112 && offset
== finished_offset
)
8115 /* Otherwise, we're now reading something different. Discard
8117 xfree (finished_object
);
8118 xfree (finished_annex
);
8119 finished_object
= NULL
;
8120 finished_annex
= NULL
;
8123 /* Request only enough to fit in a single packet. The actual data
8124 may not, since we don't know how much of it will need to be escaped;
8125 the target is free to respond with slightly less data. We subtract
8126 five to account for the response type and the protocol frame. */
8127 n
= min (get_remote_packet_size () - 5, len
);
8128 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8129 object_name
, annex
? annex
: "",
8130 phex_nz (offset
, sizeof offset
),
8131 phex_nz (n
, sizeof n
));
8132 i
= putpkt (rs
->buf
);
8137 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8138 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8141 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8142 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8144 /* 'm' means there is (or at least might be) more data after this
8145 batch. That does not make sense unless there's at least one byte
8146 of data in this reply. */
8147 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8148 error (_("Remote qXfer reply contained no data."));
8150 /* Got some data. */
8151 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8153 /* 'l' is an EOF marker, possibly including a final block of data,
8154 or possibly empty. If we have the final block of a non-empty
8155 object, record this fact to bypass a subsequent partial read. */
8156 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8158 finished_object
= xstrdup (object_name
);
8159 finished_annex
= xstrdup (annex
? annex
: "");
8160 finished_offset
= offset
+ i
;
8167 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8168 const char *annex
, gdb_byte
*readbuf
,
8169 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8171 struct remote_state
*rs
;
8176 set_remote_traceframe ();
8177 set_general_thread (inferior_ptid
);
8179 rs
= get_remote_state ();
8181 /* Handle memory using the standard memory routines. */
8182 if (object
== TARGET_OBJECT_MEMORY
)
8188 /* If the remote target is connected but not running, we should
8189 pass this request down to a lower stratum (e.g. the executable
8191 if (!target_has_execution
)
8194 if (writebuf
!= NULL
)
8195 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8197 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8201 else if (xfered
== 0 && errno
== 0)
8207 /* Handle SPU memory using qxfer packets. */
8208 if (object
== TARGET_OBJECT_SPU
)
8211 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8212 &remote_protocol_packets
8213 [PACKET_qXfer_spu_read
]);
8215 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8216 &remote_protocol_packets
8217 [PACKET_qXfer_spu_write
]);
8220 /* Handle extra signal info using qxfer packets. */
8221 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8224 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8225 &remote_protocol_packets
8226 [PACKET_qXfer_siginfo_read
]);
8228 return remote_write_qxfer (ops
, "siginfo", annex
,
8229 writebuf
, offset
, len
,
8230 &remote_protocol_packets
8231 [PACKET_qXfer_siginfo_write
]);
8234 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8237 return remote_read_qxfer (ops
, "statictrace", annex
,
8238 readbuf
, offset
, len
,
8239 &remote_protocol_packets
8240 [PACKET_qXfer_statictrace_read
]);
8245 /* Only handle flash writes. */
8246 if (writebuf
!= NULL
)
8252 case TARGET_OBJECT_FLASH
:
8253 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8257 else if (xfered
== 0 && errno
== 0)
8267 /* Map pre-existing objects onto letters. DO NOT do this for new
8268 objects!!! Instead specify new query packets. */
8271 case TARGET_OBJECT_AVR
:
8275 case TARGET_OBJECT_AUXV
:
8276 gdb_assert (annex
== NULL
);
8277 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8278 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8280 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8281 return remote_read_qxfer
8282 (ops
, "features", annex
, readbuf
, offset
, len
,
8283 &remote_protocol_packets
[PACKET_qXfer_features
]);
8285 case TARGET_OBJECT_LIBRARIES
:
8286 return remote_read_qxfer
8287 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8288 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8290 case TARGET_OBJECT_MEMORY_MAP
:
8291 gdb_assert (annex
== NULL
);
8292 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8293 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8295 case TARGET_OBJECT_OSDATA
:
8296 /* Should only get here if we're connected. */
8297 gdb_assert (remote_desc
);
8298 return remote_read_qxfer
8299 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8300 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8302 case TARGET_OBJECT_THREADS
:
8303 gdb_assert (annex
== NULL
);
8304 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8305 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8307 case TARGET_OBJECT_TRACEFRAME_INFO
:
8308 gdb_assert (annex
== NULL
);
8309 return remote_read_qxfer
8310 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8311 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8313 case TARGET_OBJECT_FDPIC
:
8314 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8315 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8320 /* Note: a zero OFFSET and LEN can be used to query the minimum
8322 if (offset
== 0 && len
== 0)
8323 return (get_remote_packet_size ());
8324 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8325 large enough let the caller deal with it. */
8326 if (len
< get_remote_packet_size ())
8328 len
= get_remote_packet_size ();
8330 /* Except for querying the minimum buffer size, target must be open. */
8332 error (_("remote query is only available after target open"));
8334 gdb_assert (annex
!= NULL
);
8335 gdb_assert (readbuf
!= NULL
);
8341 /* We used one buffer char for the remote protocol q command and
8342 another for the query type. As the remote protocol encapsulation
8343 uses 4 chars plus one extra in case we are debugging
8344 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8347 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8349 /* Bad caller may have sent forbidden characters. */
8350 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8355 gdb_assert (annex
[i
] == '\0');
8357 i
= putpkt (rs
->buf
);
8361 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8362 strcpy ((char *) readbuf
, rs
->buf
);
8364 return strlen ((char *) readbuf
);
8368 remote_search_memory (struct target_ops
* ops
,
8369 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8370 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8371 CORE_ADDR
*found_addrp
)
8373 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8374 struct remote_state
*rs
= get_remote_state ();
8375 int max_size
= get_memory_write_packet_size ();
8376 struct packet_config
*packet
=
8377 &remote_protocol_packets
[PACKET_qSearch_memory
];
8378 /* Number of packet bytes used to encode the pattern;
8379 this could be more than PATTERN_LEN due to escape characters. */
8380 int escaped_pattern_len
;
8381 /* Amount of pattern that was encodable in the packet. */
8382 int used_pattern_len
;
8385 ULONGEST found_addr
;
8387 /* Don't go to the target if we don't have to.
8388 This is done before checking packet->support to avoid the possibility that
8389 a success for this edge case means the facility works in general. */
8390 if (pattern_len
> search_space_len
)
8392 if (pattern_len
== 0)
8394 *found_addrp
= start_addr
;
8398 /* If we already know the packet isn't supported, fall back to the simple
8399 way of searching memory. */
8401 if (packet
->support
== PACKET_DISABLE
)
8403 /* Target doesn't provided special support, fall back and use the
8404 standard support (copy memory and do the search here). */
8405 return simple_search_memory (ops
, start_addr
, search_space_len
,
8406 pattern
, pattern_len
, found_addrp
);
8409 /* Insert header. */
8410 i
= snprintf (rs
->buf
, max_size
,
8411 "qSearch:memory:%s;%s;",
8412 phex_nz (start_addr
, addr_size
),
8413 phex_nz (search_space_len
, sizeof (search_space_len
)));
8414 max_size
-= (i
+ 1);
8416 /* Escape as much data as fits into rs->buf. */
8417 escaped_pattern_len
=
8418 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8419 &used_pattern_len
, max_size
);
8421 /* Bail if the pattern is too large. */
8422 if (used_pattern_len
!= pattern_len
)
8423 error (_("Pattern is too large to transmit to remote target."));
8425 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8426 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8427 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8429 /* The request may not have worked because the command is not
8430 supported. If so, fall back to the simple way. */
8431 if (packet
->support
== PACKET_DISABLE
)
8433 return simple_search_memory (ops
, start_addr
, search_space_len
,
8434 pattern
, pattern_len
, found_addrp
);
8439 if (rs
->buf
[0] == '0')
8441 else if (rs
->buf
[0] == '1')
8444 if (rs
->buf
[1] != ',')
8445 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8446 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8447 *found_addrp
= found_addr
;
8450 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8456 remote_rcmd (char *command
,
8457 struct ui_file
*outbuf
)
8459 struct remote_state
*rs
= get_remote_state ();
8463 error (_("remote rcmd is only available after target open"));
8465 /* Send a NULL command across as an empty command. */
8466 if (command
== NULL
)
8469 /* The query prefix. */
8470 strcpy (rs
->buf
, "qRcmd,");
8471 p
= strchr (rs
->buf
, '\0');
8473 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8474 > get_remote_packet_size ())
8475 error (_("\"monitor\" command ``%s'' is too long."), command
);
8477 /* Encode the actual command. */
8478 bin2hex ((gdb_byte
*) command
, p
, 0);
8480 if (putpkt (rs
->buf
) < 0)
8481 error (_("Communication problem with target."));
8483 /* get/display the response */
8488 /* XXX - see also remote_get_noisy_reply(). */
8490 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8493 error (_("Target does not support this command."));
8494 if (buf
[0] == 'O' && buf
[1] != 'K')
8496 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8499 if (strcmp (buf
, "OK") == 0)
8501 if (strlen (buf
) == 3 && buf
[0] == 'E'
8502 && isdigit (buf
[1]) && isdigit (buf
[2]))
8504 error (_("Protocol error with Rcmd"));
8506 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8508 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8510 fputc_unfiltered (c
, outbuf
);
8516 static VEC(mem_region_s
) *
8517 remote_memory_map (struct target_ops
*ops
)
8519 VEC(mem_region_s
) *result
= NULL
;
8520 char *text
= target_read_stralloc (¤t_target
,
8521 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8525 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8527 result
= parse_memory_map (text
);
8528 do_cleanups (back_to
);
8535 packet_command (char *args
, int from_tty
)
8537 struct remote_state
*rs
= get_remote_state ();
8540 error (_("command can only be used with remote target"));
8543 error (_("remote-packet command requires packet text as argument"));
8545 puts_filtered ("sending: ");
8546 print_packet (args
);
8547 puts_filtered ("\n");
8550 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8551 puts_filtered ("received: ");
8552 print_packet (rs
->buf
);
8553 puts_filtered ("\n");
8557 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8559 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8561 static void threadset_test_cmd (char *cmd
, int tty
);
8563 static void threadalive_test (char *cmd
, int tty
);
8565 static void threadlist_test_cmd (char *cmd
, int tty
);
8567 int get_and_display_threadinfo (threadref
*ref
);
8569 static void threadinfo_test_cmd (char *cmd
, int tty
);
8571 static int thread_display_step (threadref
*ref
, void *context
);
8573 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8575 static void init_remote_threadtests (void);
8577 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8580 threadset_test_cmd (char *cmd
, int tty
)
8582 int sample_thread
= SAMPLE_THREAD
;
8584 printf_filtered (_("Remote threadset test\n"));
8585 set_general_thread (sample_thread
);
8590 threadalive_test (char *cmd
, int tty
)
8592 int sample_thread
= SAMPLE_THREAD
;
8593 int pid
= ptid_get_pid (inferior_ptid
);
8594 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8596 if (remote_thread_alive (ptid
))
8597 printf_filtered ("PASS: Thread alive test\n");
8599 printf_filtered ("FAIL: Thread alive test\n");
8602 void output_threadid (char *title
, threadref
*ref
);
8605 output_threadid (char *title
, threadref
*ref
)
8609 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8611 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8615 threadlist_test_cmd (char *cmd
, int tty
)
8618 threadref nextthread
;
8619 int done
, result_count
;
8620 threadref threadlist
[3];
8622 printf_filtered ("Remote Threadlist test\n");
8623 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8624 &result_count
, &threadlist
[0]))
8625 printf_filtered ("FAIL: threadlist test\n");
8628 threadref
*scan
= threadlist
;
8629 threadref
*limit
= scan
+ result_count
;
8631 while (scan
< limit
)
8632 output_threadid (" thread ", scan
++);
8637 display_thread_info (struct gdb_ext_thread_info
*info
)
8639 output_threadid ("Threadid: ", &info
->threadid
);
8640 printf_filtered ("Name: %s\n ", info
->shortname
);
8641 printf_filtered ("State: %s\n", info
->display
);
8642 printf_filtered ("other: %s\n\n", info
->more_display
);
8646 get_and_display_threadinfo (threadref
*ref
)
8650 struct gdb_ext_thread_info threadinfo
;
8652 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8653 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8654 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8655 display_thread_info (&threadinfo
);
8660 threadinfo_test_cmd (char *cmd
, int tty
)
8662 int athread
= SAMPLE_THREAD
;
8666 int_to_threadref (&thread
, athread
);
8667 printf_filtered ("Remote Threadinfo test\n");
8668 if (!get_and_display_threadinfo (&thread
))
8669 printf_filtered ("FAIL cannot get thread info\n");
8673 thread_display_step (threadref
*ref
, void *context
)
8675 /* output_threadid(" threadstep ",ref); *//* simple test */
8676 return get_and_display_threadinfo (ref
);
8680 threadlist_update_test_cmd (char *cmd
, int tty
)
8682 printf_filtered ("Remote Threadlist update test\n");
8683 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8687 init_remote_threadtests (void)
8689 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
8690 _("Fetch and print the remote list of "
8691 "thread identifiers, one pkt only"));
8692 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8693 _("Fetch and display info about one thread"));
8694 add_com ("tset", class_obscure
, threadset_test_cmd
,
8695 _("Test setting to a different thread"));
8696 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8697 _("Iterate through updating all remote thread info"));
8698 add_com ("talive", class_obscure
, threadalive_test
,
8699 _(" Remote thread alive test "));
8704 /* Convert a thread ID to a string. Returns the string in a static
8708 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8710 static char buf
[64];
8711 struct remote_state
*rs
= get_remote_state ();
8713 if (ptid_is_pid (ptid
))
8715 /* Printing an inferior target id. */
8717 /* When multi-process extensions are off, there's no way in the
8718 remote protocol to know the remote process id, if there's any
8719 at all. There's one exception --- when we're connected with
8720 target extended-remote, and we manually attached to a process
8721 with "attach PID". We don't record anywhere a flag that
8722 allows us to distinguish that case from the case of
8723 connecting with extended-remote and the stub already being
8724 attached to a process, and reporting yes to qAttached, hence
8725 no smart special casing here. */
8726 if (!remote_multi_process_p (rs
))
8728 xsnprintf (buf
, sizeof buf
, "Remote target");
8732 return normal_pid_to_str (ptid
);
8736 if (ptid_equal (magic_null_ptid
, ptid
))
8737 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8738 else if (remote_multi_process_p (rs
))
8739 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8740 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8742 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8743 ptid_get_tid (ptid
));
8748 /* Get the address of the thread local variable in OBJFILE which is
8749 stored at OFFSET within the thread local storage for thread PTID. */
8752 remote_get_thread_local_address (struct target_ops
*ops
,
8753 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8755 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8757 struct remote_state
*rs
= get_remote_state ();
8759 char *endp
= rs
->buf
+ get_remote_packet_size ();
8760 enum packet_result result
;
8762 strcpy (p
, "qGetTLSAddr:");
8764 p
= write_ptid (p
, endp
, ptid
);
8766 p
+= hexnumstr (p
, offset
);
8768 p
+= hexnumstr (p
, lm
);
8772 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8773 result
= packet_ok (rs
->buf
,
8774 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8775 if (result
== PACKET_OK
)
8779 unpack_varlen_hex (rs
->buf
, &result
);
8782 else if (result
== PACKET_UNKNOWN
)
8783 throw_error (TLS_GENERIC_ERROR
,
8784 _("Remote target doesn't support qGetTLSAddr packet"));
8786 throw_error (TLS_GENERIC_ERROR
,
8787 _("Remote target failed to process qGetTLSAddr request"));
8790 throw_error (TLS_GENERIC_ERROR
,
8791 _("TLS not supported or disabled on this target"));
8796 /* Provide thread local base, i.e. Thread Information Block address.
8797 Returns 1 if ptid is found and thread_local_base is non zero. */
8800 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
8802 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
8804 struct remote_state
*rs
= get_remote_state ();
8806 char *endp
= rs
->buf
+ get_remote_packet_size ();
8807 enum packet_result result
;
8809 strcpy (p
, "qGetTIBAddr:");
8811 p
= write_ptid (p
, endp
, ptid
);
8815 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8816 result
= packet_ok (rs
->buf
,
8817 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
8818 if (result
== PACKET_OK
)
8822 unpack_varlen_hex (rs
->buf
, &result
);
8824 *addr
= (CORE_ADDR
) result
;
8827 else if (result
== PACKET_UNKNOWN
)
8828 error (_("Remote target doesn't support qGetTIBAddr packet"));
8830 error (_("Remote target failed to process qGetTIBAddr request"));
8833 error (_("qGetTIBAddr not supported or disabled on this target"));
8838 /* Support for inferring a target description based on the current
8839 architecture and the size of a 'g' packet. While the 'g' packet
8840 can have any size (since optional registers can be left off the
8841 end), some sizes are easily recognizable given knowledge of the
8842 approximate architecture. */
8844 struct remote_g_packet_guess
8847 const struct target_desc
*tdesc
;
8849 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8850 DEF_VEC_O(remote_g_packet_guess_s
);
8852 struct remote_g_packet_data
8854 VEC(remote_g_packet_guess_s
) *guesses
;
8857 static struct gdbarch_data
*remote_g_packet_data_handle
;
8860 remote_g_packet_data_init (struct obstack
*obstack
)
8862 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8866 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8867 const struct target_desc
*tdesc
)
8869 struct remote_g_packet_data
*data
8870 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8871 struct remote_g_packet_guess new_guess
, *guess
;
8874 gdb_assert (tdesc
!= NULL
);
8877 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8879 if (guess
->bytes
== bytes
)
8880 internal_error (__FILE__
, __LINE__
,
8881 _("Duplicate g packet description added for size %d"),
8884 new_guess
.bytes
= bytes
;
8885 new_guess
.tdesc
= tdesc
;
8886 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8889 /* Return 1 if remote_read_description would do anything on this target
8890 and architecture, 0 otherwise. */
8893 remote_read_description_p (struct target_ops
*target
)
8895 struct remote_g_packet_data
*data
8896 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8898 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8904 static const struct target_desc
*
8905 remote_read_description (struct target_ops
*target
)
8907 struct remote_g_packet_data
*data
8908 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8910 /* Do not try this during initial connection, when we do not know
8911 whether there is a running but stopped thread. */
8912 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8915 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8917 struct remote_g_packet_guess
*guess
;
8919 int bytes
= send_g_packet ();
8922 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8924 if (guess
->bytes
== bytes
)
8925 return guess
->tdesc
;
8927 /* We discard the g packet. A minor optimization would be to
8928 hold on to it, and fill the register cache once we have selected
8929 an architecture, but it's too tricky to do safely. */
8935 /* Remote file transfer support. This is host-initiated I/O, not
8936 target-initiated; for target-initiated, see remote-fileio.c. */
8938 /* If *LEFT is at least the length of STRING, copy STRING to
8939 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8940 decrease *LEFT. Otherwise raise an error. */
8943 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8945 int len
= strlen (string
);
8948 error (_("Packet too long for target."));
8950 memcpy (*buffer
, string
, len
);
8954 /* NUL-terminate the buffer as a convenience, if there is
8960 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8961 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8962 decrease *LEFT. Otherwise raise an error. */
8965 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8968 if (2 * len
> *left
)
8969 error (_("Packet too long for target."));
8971 bin2hex (bytes
, *buffer
, len
);
8975 /* NUL-terminate the buffer as a convenience, if there is
8981 /* If *LEFT is large enough, convert VALUE to hex and add it to
8982 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8983 decrease *LEFT. Otherwise raise an error. */
8986 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8988 int len
= hexnumlen (value
);
8991 error (_("Packet too long for target."));
8993 hexnumstr (*buffer
, value
);
8997 /* NUL-terminate the buffer as a convenience, if there is
9003 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9004 value, *REMOTE_ERRNO to the remote error number or zero if none
9005 was included, and *ATTACHMENT to point to the start of the annex
9006 if any. The length of the packet isn't needed here; there may
9007 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9009 Return 0 if the packet could be parsed, -1 if it could not. If
9010 -1 is returned, the other variables may not be initialized. */
9013 remote_hostio_parse_result (char *buffer
, int *retcode
,
9014 int *remote_errno
, char **attachment
)
9021 if (buffer
[0] != 'F')
9025 *retcode
= strtol (&buffer
[1], &p
, 16);
9026 if (errno
!= 0 || p
== &buffer
[1])
9029 /* Check for ",errno". */
9033 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9034 if (errno
!= 0 || p
+ 1 == p2
)
9039 /* Check for ";attachment". If there is no attachment, the
9040 packet should end here. */
9043 *attachment
= p
+ 1;
9046 else if (*p
== '\0')
9052 /* Send a prepared I/O packet to the target and read its response.
9053 The prepared packet is in the global RS->BUF before this function
9054 is called, and the answer is there when we return.
9056 COMMAND_BYTES is the length of the request to send, which may include
9057 binary data. WHICH_PACKET is the packet configuration to check
9058 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9059 is set to the error number and -1 is returned. Otherwise the value
9060 returned by the function is returned.
9062 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9063 attachment is expected; an error will be reported if there's a
9064 mismatch. If one is found, *ATTACHMENT will be set to point into
9065 the packet buffer and *ATTACHMENT_LEN will be set to the
9066 attachment's length. */
9069 remote_hostio_send_command (int command_bytes
, int which_packet
,
9070 int *remote_errno
, char **attachment
,
9071 int *attachment_len
)
9073 struct remote_state
*rs
= get_remote_state ();
9074 int ret
, bytes_read
;
9075 char *attachment_tmp
;
9078 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9080 *remote_errno
= FILEIO_ENOSYS
;
9084 putpkt_binary (rs
->buf
, command_bytes
);
9085 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9087 /* If it timed out, something is wrong. Don't try to parse the
9091 *remote_errno
= FILEIO_EINVAL
;
9095 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9098 *remote_errno
= FILEIO_EINVAL
;
9100 case PACKET_UNKNOWN
:
9101 *remote_errno
= FILEIO_ENOSYS
;
9107 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9110 *remote_errno
= FILEIO_EINVAL
;
9114 /* Make sure we saw an attachment if and only if we expected one. */
9115 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9116 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9118 *remote_errno
= FILEIO_EINVAL
;
9122 /* If an attachment was found, it must point into the packet buffer;
9123 work out how many bytes there were. */
9124 if (attachment_tmp
!= NULL
)
9126 *attachment
= attachment_tmp
;
9127 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9133 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9134 remote file descriptor, or -1 if an error occurs (and set
9138 remote_hostio_open (const char *filename
, int flags
, int mode
,
9141 struct remote_state
*rs
= get_remote_state ();
9143 int left
= get_remote_packet_size () - 1;
9145 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9147 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9149 remote_buffer_add_string (&p
, &left
, ",");
9151 remote_buffer_add_int (&p
, &left
, flags
);
9152 remote_buffer_add_string (&p
, &left
, ",");
9154 remote_buffer_add_int (&p
, &left
, mode
);
9156 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9157 remote_errno
, NULL
, NULL
);
9160 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9161 Return the number of bytes written, or -1 if an error occurs (and
9162 set *REMOTE_ERRNO). */
9165 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9166 ULONGEST offset
, int *remote_errno
)
9168 struct remote_state
*rs
= get_remote_state ();
9170 int left
= get_remote_packet_size ();
9173 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9175 remote_buffer_add_int (&p
, &left
, fd
);
9176 remote_buffer_add_string (&p
, &left
, ",");
9178 remote_buffer_add_int (&p
, &left
, offset
);
9179 remote_buffer_add_string (&p
, &left
, ",");
9181 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9182 get_remote_packet_size () - (p
- rs
->buf
));
9184 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9185 remote_errno
, NULL
, NULL
);
9188 /* Read up to LEN bytes FD on the remote target into READ_BUF
9189 Return the number of bytes read, or -1 if an error occurs (and
9190 set *REMOTE_ERRNO). */
9193 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9194 ULONGEST offset
, int *remote_errno
)
9196 struct remote_state
*rs
= get_remote_state ();
9199 int left
= get_remote_packet_size ();
9200 int ret
, attachment_len
;
9203 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9205 remote_buffer_add_int (&p
, &left
, fd
);
9206 remote_buffer_add_string (&p
, &left
, ",");
9208 remote_buffer_add_int (&p
, &left
, len
);
9209 remote_buffer_add_string (&p
, &left
, ",");
9211 remote_buffer_add_int (&p
, &left
, offset
);
9213 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9214 remote_errno
, &attachment
,
9220 read_len
= remote_unescape_input (attachment
, attachment_len
,
9222 if (read_len
!= ret
)
9223 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9228 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9229 (and set *REMOTE_ERRNO). */
9232 remote_hostio_close (int fd
, int *remote_errno
)
9234 struct remote_state
*rs
= get_remote_state ();
9236 int left
= get_remote_packet_size () - 1;
9238 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9240 remote_buffer_add_int (&p
, &left
, fd
);
9242 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9243 remote_errno
, NULL
, NULL
);
9246 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9247 occurs (and set *REMOTE_ERRNO). */
9250 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9252 struct remote_state
*rs
= get_remote_state ();
9254 int left
= get_remote_packet_size () - 1;
9256 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9258 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9261 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9262 remote_errno
, NULL
, NULL
);
9266 remote_fileio_errno_to_host (int errnum
)
9290 case FILEIO_ENOTDIR
:
9310 case FILEIO_ENAMETOOLONG
:
9311 return ENAMETOOLONG
;
9317 remote_hostio_error (int errnum
)
9319 int host_error
= remote_fileio_errno_to_host (errnum
);
9321 if (host_error
== -1)
9322 error (_("Unknown remote I/O error %d"), errnum
);
9324 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9328 remote_hostio_close_cleanup (void *opaque
)
9330 int fd
= *(int *) opaque
;
9333 remote_hostio_close (fd
, &remote_errno
);
9338 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9340 const char *filename
= bfd_get_filename (abfd
);
9341 int fd
, remote_errno
;
9344 gdb_assert (remote_filename_p (filename
));
9346 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9349 errno
= remote_fileio_errno_to_host (remote_errno
);
9350 bfd_set_error (bfd_error_system_call
);
9354 stream
= xmalloc (sizeof (int));
9360 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9362 int fd
= *(int *)stream
;
9367 /* Ignore errors on close; these may happen if the remote
9368 connection was already torn down. */
9369 remote_hostio_close (fd
, &remote_errno
);
9375 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9376 file_ptr nbytes
, file_ptr offset
)
9378 int fd
= *(int *)stream
;
9380 file_ptr pos
, bytes
;
9383 while (nbytes
> pos
)
9385 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9386 offset
+ pos
, &remote_errno
);
9388 /* Success, but no bytes, means end-of-file. */
9392 errno
= remote_fileio_errno_to_host (remote_errno
);
9393 bfd_set_error (bfd_error_system_call
);
9404 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9406 /* FIXME: We should probably implement remote_hostio_stat. */
9407 sb
->st_size
= INT_MAX
;
9412 remote_filename_p (const char *filename
)
9414 return strncmp (filename
, "remote:", 7) == 0;
9418 remote_bfd_open (const char *remote_file
, const char *target
)
9420 return bfd_openr_iovec (remote_file
, target
,
9421 remote_bfd_iovec_open
, NULL
,
9422 remote_bfd_iovec_pread
,
9423 remote_bfd_iovec_close
,
9424 remote_bfd_iovec_stat
);
9428 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9430 struct cleanup
*back_to
, *close_cleanup
;
9431 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9434 int bytes_in_buffer
;
9439 error (_("command can only be used with remote target"));
9441 file
= fopen (local_file
, "rb");
9443 perror_with_name (local_file
);
9444 back_to
= make_cleanup_fclose (file
);
9446 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9448 0700, &remote_errno
);
9450 remote_hostio_error (remote_errno
);
9452 /* Send up to this many bytes at once. They won't all fit in the
9453 remote packet limit, so we'll transfer slightly fewer. */
9454 io_size
= get_remote_packet_size ();
9455 buffer
= xmalloc (io_size
);
9456 make_cleanup (xfree
, buffer
);
9458 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9460 bytes_in_buffer
= 0;
9463 while (bytes_in_buffer
|| !saw_eof
)
9467 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9468 io_size
- bytes_in_buffer
,
9473 error (_("Error reading %s."), local_file
);
9476 /* EOF. Unless there is something still in the
9477 buffer from the last iteration, we are done. */
9479 if (bytes_in_buffer
== 0)
9487 bytes
+= bytes_in_buffer
;
9488 bytes_in_buffer
= 0;
9490 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9491 offset
, &remote_errno
);
9494 remote_hostio_error (remote_errno
);
9495 else if (retcode
== 0)
9496 error (_("Remote write of %d bytes returned 0!"), bytes
);
9497 else if (retcode
< bytes
)
9499 /* Short write. Save the rest of the read data for the next
9501 bytes_in_buffer
= bytes
- retcode
;
9502 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9508 discard_cleanups (close_cleanup
);
9509 if (remote_hostio_close (fd
, &remote_errno
))
9510 remote_hostio_error (remote_errno
);
9513 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9514 do_cleanups (back_to
);
9518 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9520 struct cleanup
*back_to
, *close_cleanup
;
9521 int fd
, remote_errno
, bytes
, io_size
;
9527 error (_("command can only be used with remote target"));
9529 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9531 remote_hostio_error (remote_errno
);
9533 file
= fopen (local_file
, "wb");
9535 perror_with_name (local_file
);
9536 back_to
= make_cleanup_fclose (file
);
9538 /* Send up to this many bytes at once. They won't all fit in the
9539 remote packet limit, so we'll transfer slightly fewer. */
9540 io_size
= get_remote_packet_size ();
9541 buffer
= xmalloc (io_size
);
9542 make_cleanup (xfree
, buffer
);
9544 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9549 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9551 /* Success, but no bytes, means end-of-file. */
9554 remote_hostio_error (remote_errno
);
9558 bytes
= fwrite (buffer
, 1, bytes
, file
);
9560 perror_with_name (local_file
);
9563 discard_cleanups (close_cleanup
);
9564 if (remote_hostio_close (fd
, &remote_errno
))
9565 remote_hostio_error (remote_errno
);
9568 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9569 do_cleanups (back_to
);
9573 remote_file_delete (const char *remote_file
, int from_tty
)
9575 int retcode
, remote_errno
;
9578 error (_("command can only be used with remote target"));
9580 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9582 remote_hostio_error (remote_errno
);
9585 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9589 remote_put_command (char *args
, int from_tty
)
9591 struct cleanup
*back_to
;
9595 error_no_arg (_("file to put"));
9597 argv
= gdb_buildargv (args
);
9598 back_to
= make_cleanup_freeargv (argv
);
9599 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9600 error (_("Invalid parameters to remote put"));
9602 remote_file_put (argv
[0], argv
[1], from_tty
);
9604 do_cleanups (back_to
);
9608 remote_get_command (char *args
, int from_tty
)
9610 struct cleanup
*back_to
;
9614 error_no_arg (_("file to get"));
9616 argv
= gdb_buildargv (args
);
9617 back_to
= make_cleanup_freeargv (argv
);
9618 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9619 error (_("Invalid parameters to remote get"));
9621 remote_file_get (argv
[0], argv
[1], from_tty
);
9623 do_cleanups (back_to
);
9627 remote_delete_command (char *args
, int from_tty
)
9629 struct cleanup
*back_to
;
9633 error_no_arg (_("file to delete"));
9635 argv
= gdb_buildargv (args
);
9636 back_to
= make_cleanup_freeargv (argv
);
9637 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9638 error (_("Invalid parameters to remote delete"));
9640 remote_file_delete (argv
[0], from_tty
);
9642 do_cleanups (back_to
);
9646 remote_command (char *args
, int from_tty
)
9648 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9652 remote_can_execute_reverse (void)
9654 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9655 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9662 remote_supports_non_stop (void)
9668 remote_supports_multi_process (void)
9670 struct remote_state
*rs
= get_remote_state ();
9672 return remote_multi_process_p (rs
);
9676 remote_supports_cond_tracepoints (void)
9678 struct remote_state
*rs
= get_remote_state ();
9680 return rs
->cond_tracepoints
;
9684 remote_supports_fast_tracepoints (void)
9686 struct remote_state
*rs
= get_remote_state ();
9688 return rs
->fast_tracepoints
;
9692 remote_supports_static_tracepoints (void)
9694 struct remote_state
*rs
= get_remote_state ();
9696 return rs
->static_tracepoints
;
9700 remote_supports_enable_disable_tracepoint (void)
9702 struct remote_state
*rs
= get_remote_state ();
9704 return rs
->enable_disable_tracepoints
;
9708 remote_trace_init (void)
9711 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9712 if (strcmp (target_buf
, "OK") != 0)
9713 error (_("Target does not support this command."));
9716 static void free_actions_list (char **actions_list
);
9717 static void free_actions_list_cleanup_wrapper (void *);
9719 free_actions_list_cleanup_wrapper (void *al
)
9721 free_actions_list (al
);
9725 free_actions_list (char **actions_list
)
9729 if (actions_list
== 0)
9732 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9733 xfree (actions_list
[ndx
]);
9735 xfree (actions_list
);
9738 /* Recursive routine to walk through command list including loops, and
9739 download packets for each command. */
9742 remote_download_command_source (int num
, ULONGEST addr
,
9743 struct command_line
*cmds
)
9745 struct remote_state
*rs
= get_remote_state ();
9746 struct command_line
*cmd
;
9748 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
9750 QUIT
; /* Allow user to bail out with ^C. */
9751 strcpy (rs
->buf
, "QTDPsrc:");
9752 encode_source_string (num
, addr
, "cmd", cmd
->line
,
9753 rs
->buf
+ strlen (rs
->buf
),
9754 rs
->buf_size
- strlen (rs
->buf
));
9756 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9757 if (strcmp (target_buf
, "OK"))
9758 warning (_("Target does not support source download."));
9760 if (cmd
->control_type
== while_control
9761 || cmd
->control_type
== while_stepping_control
)
9763 remote_download_command_source (num
, addr
, *cmd
->body_list
);
9765 QUIT
; /* Allow user to bail out with ^C. */
9766 strcpy (rs
->buf
, "QTDPsrc:");
9767 encode_source_string (num
, addr
, "cmd", "end",
9768 rs
->buf
+ strlen (rs
->buf
),
9769 rs
->buf_size
- strlen (rs
->buf
));
9771 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9772 if (strcmp (target_buf
, "OK"))
9773 warning (_("Target does not support source download."));
9779 remote_download_tracepoint (struct breakpoint
*b
)
9781 struct bp_location
*loc
;
9786 char **stepping_actions
;
9788 struct cleanup
*old_chain
= NULL
;
9789 struct agent_expr
*aexpr
;
9790 struct cleanup
*aexpr_chain
= NULL
;
9792 struct tracepoint
*t
= (struct tracepoint
*) b
;
9794 /* Iterate over all the tracepoint locations. It's up to the target to
9795 notice multiple tracepoint packets with the same number but different
9796 addresses, and treat them as multiple locations. */
9797 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
9799 encode_actions (b
, loc
, &tdp_actions
, &stepping_actions
);
9800 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9802 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
9805 tpaddr
= loc
->address
;
9806 sprintf_vma (addrbuf
, tpaddr
);
9807 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
9808 addrbuf
, /* address */
9809 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
9810 t
->step_count
, t
->pass_count
);
9811 /* Fast tracepoints are mostly handled by the target, but we can
9812 tell the target how big of an instruction block should be moved
9814 if (b
->type
== bp_fast_tracepoint
)
9816 /* Only test for support at download time; we may not know
9817 target capabilities at definition time. */
9818 if (remote_supports_fast_tracepoints ())
9822 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9823 tpaddr
, &isize
, NULL
))
9824 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9826 /* If it passed validation at definition but fails now,
9827 something is very wrong. */
9828 internal_error (__FILE__
, __LINE__
,
9829 _("Fast tracepoint not "
9830 "valid during download"));
9833 /* Fast tracepoints are functionally identical to regular
9834 tracepoints, so don't take lack of support as a reason to
9835 give up on the trace run. */
9836 warning (_("Target does not support fast tracepoints, "
9837 "downloading %d as regular tracepoint"), b
->number
);
9839 else if (b
->type
== bp_static_tracepoint
)
9841 /* Only test for support at download time; we may not know
9842 target capabilities at definition time. */
9843 if (remote_supports_static_tracepoints ())
9845 struct static_tracepoint_marker marker
;
9847 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
9850 error (_("Static tracepoint not valid during download"));
9853 /* Fast tracepoints are functionally identical to regular
9854 tracepoints, so don't take lack of support as a reason
9855 to give up on the trace run. */
9856 error (_("Target does not support static tracepoints"));
9858 /* If the tracepoint has a conditional, make it into an agent
9859 expression and append to the definition. */
9862 /* Only test support at download time, we may not know target
9863 capabilities at definition time. */
9864 if (remote_supports_cond_tracepoints ())
9866 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
9867 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9868 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9869 pkt
= buf
+ strlen (buf
);
9870 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9871 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9873 do_cleanups (aexpr_chain
);
9876 warning (_("Target does not support conditional tracepoints, "
9877 "ignoring tp %d cond"), b
->number
);
9880 if (b
->commands
|| *default_collect
)
9883 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9884 if (strcmp (target_buf
, "OK"))
9885 error (_("Target does not support tracepoints."));
9887 /* do_single_steps (t); */
9890 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9892 QUIT
; /* Allow user to bail out with ^C. */
9893 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9894 b
->number
, addrbuf
, /* address */
9896 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9899 remote_get_noisy_reply (&target_buf
,
9901 if (strcmp (target_buf
, "OK"))
9902 error (_("Error on target while setting tracepoints."));
9905 if (stepping_actions
)
9907 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9909 QUIT
; /* Allow user to bail out with ^C. */
9910 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9911 b
->number
, addrbuf
, /* address */
9912 ((ndx
== 0) ? "S" : ""),
9913 stepping_actions
[ndx
],
9914 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9916 remote_get_noisy_reply (&target_buf
,
9918 if (strcmp (target_buf
, "OK"))
9919 error (_("Error on target while setting tracepoints."));
9923 if (remote_protocol_packets
[PACKET_TracepointSource
].support
9928 strcpy (buf
, "QTDPsrc:");
9929 encode_source_string (b
->number
, loc
->address
,
9930 "at", b
->addr_string
, buf
+ strlen (buf
),
9931 2048 - strlen (buf
));
9934 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9935 if (strcmp (target_buf
, "OK"))
9936 warning (_("Target does not support source download."));
9940 strcpy (buf
, "QTDPsrc:");
9941 encode_source_string (b
->number
, loc
->address
,
9942 "cond", b
->cond_string
, buf
+ strlen (buf
),
9943 2048 - strlen (buf
));
9945 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9946 if (strcmp (target_buf
, "OK"))
9947 warning (_("Target does not support source download."));
9949 remote_download_command_source (b
->number
, loc
->address
,
9950 breakpoint_commands (b
));
9953 do_cleanups (old_chain
);
9958 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9960 struct remote_state
*rs
= get_remote_state ();
9963 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9964 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9965 p
= rs
->buf
+ strlen (rs
->buf
);
9966 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9967 error (_("Trace state variable name too long for tsv definition packet"));
9968 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9971 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9972 if (*target_buf
== '\0')
9973 error (_("Target does not support this command."));
9974 if (strcmp (target_buf
, "OK") != 0)
9975 error (_("Error on target while downloading trace state variable."));
9979 remote_enable_tracepoint (struct bp_location
*location
)
9981 struct remote_state
*rs
= get_remote_state ();
9984 sprintf_vma (addr_buf
, location
->address
);
9985 sprintf (rs
->buf
, "QTEnable:%x:%s", location
->owner
->number
, addr_buf
);
9987 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
9988 if (*rs
->buf
== '\0')
9989 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
9990 if (strcmp (rs
->buf
, "OK") != 0)
9991 error (_("Error on target while enabling tracepoint."));
9995 remote_disable_tracepoint (struct bp_location
*location
)
9997 struct remote_state
*rs
= get_remote_state ();
10000 sprintf_vma (addr_buf
, location
->address
);
10001 sprintf (rs
->buf
, "QTDisable:%x:%s", location
->owner
->number
, addr_buf
);
10003 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10004 if (*rs
->buf
== '\0')
10005 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10006 if (strcmp (rs
->buf
, "OK") != 0)
10007 error (_("Error on target while disabling tracepoint."));
10011 remote_trace_set_readonly_regions (void)
10014 bfd_size_type size
;
10020 return; /* No information to give. */
10022 strcpy (target_buf
, "QTro");
10023 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10025 char tmp1
[40], tmp2
[40];
10028 if ((s
->flags
& SEC_LOAD
) == 0 ||
10029 /* (s->flags & SEC_CODE) == 0 || */
10030 (s
->flags
& SEC_READONLY
) == 0)
10034 vma
= bfd_get_section_vma (,s
);
10035 size
= bfd_get_section_size (s
);
10036 sprintf_vma (tmp1
, vma
);
10037 sprintf_vma (tmp2
, vma
+ size
);
10038 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10039 if (offset
+ sec_length
+ 1 > target_buf_size
)
10041 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10044 Too many sections for read-only sections definition packet."));
10047 sprintf (target_buf
+ offset
, ":%s,%s", tmp1
, tmp2
);
10048 offset
+= sec_length
;
10052 putpkt (target_buf
);
10053 getpkt (&target_buf
, &target_buf_size
, 0);
10058 remote_trace_start (void)
10060 putpkt ("QTStart");
10061 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10062 if (*target_buf
== '\0')
10063 error (_("Target does not support this command."));
10064 if (strcmp (target_buf
, "OK") != 0)
10065 error (_("Bogus reply from target: %s"), target_buf
);
10069 remote_get_trace_status (struct trace_status
*ts
)
10071 /* Initialize it just to avoid a GCC false warning. */
10073 /* FIXME we need to get register block size some other way. */
10074 extern int trace_regblock_size
;
10075 volatile struct gdb_exception ex
;
10077 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10079 putpkt ("qTStatus");
10081 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10083 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10087 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10091 /* If the remote target doesn't do tracing, flag it. */
10095 /* We're working with a live target. */
10098 /* Set some defaults. */
10099 ts
->running_known
= 0;
10100 ts
->stop_reason
= trace_stop_reason_unknown
;
10101 ts
->traceframe_count
= -1;
10102 ts
->buffer_free
= 0;
10105 error (_("Bogus trace status reply from target: %s"), target_buf
);
10107 parse_trace_status (p
, ts
);
10109 return ts
->running
;
10113 remote_trace_stop (void)
10116 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10117 if (*target_buf
== '\0')
10118 error (_("Target does not support this command."));
10119 if (strcmp (target_buf
, "OK") != 0)
10120 error (_("Bogus reply from target: %s"), target_buf
);
10124 remote_trace_find (enum trace_find_type type
, int num
,
10125 ULONGEST addr1
, ULONGEST addr2
,
10128 struct remote_state
*rs
= get_remote_state ();
10130 int target_frameno
= -1, target_tracept
= -1;
10132 /* Lookups other than by absolute frame number depend on the current
10133 trace selected, so make sure it is correct on the remote end
10135 if (type
!= tfind_number
)
10136 set_remote_traceframe ();
10139 strcpy (p
, "QTFrame:");
10140 p
= strchr (p
, '\0');
10144 sprintf (p
, "%x", num
);
10147 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
10150 sprintf (p
, "tdp:%x", num
);
10153 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
10155 case tfind_outside
:
10156 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
10159 error (_("Unknown trace find type %d"), type
);
10163 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10164 if (*reply
== '\0')
10165 error (_("Target does not support this command."));
10167 while (reply
&& *reply
)
10172 target_frameno
= (int) strtol (p
, &reply
, 16);
10174 error (_("Unable to parse trace frame number"));
10175 /* Don't update our remote traceframe number cache on failure
10176 to select a remote traceframe. */
10177 if (target_frameno
== -1)
10182 target_tracept
= (int) strtol (p
, &reply
, 16);
10184 error (_("Unable to parse tracepoint number"));
10186 case 'O': /* "OK"? */
10187 if (reply
[1] == 'K' && reply
[2] == '\0')
10190 error (_("Bogus reply from target: %s"), reply
);
10193 error (_("Bogus reply from target: %s"), reply
);
10196 *tpp
= target_tracept
;
10198 remote_traceframe_number
= target_frameno
;
10199 return target_frameno
;
10203 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10205 struct remote_state
*rs
= get_remote_state ();
10209 set_remote_traceframe ();
10211 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
10213 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10214 if (reply
&& *reply
)
10218 unpack_varlen_hex (reply
+ 1, &uval
);
10219 *val
= (LONGEST
) uval
;
10227 remote_save_trace_data (const char *filename
)
10229 struct remote_state
*rs
= get_remote_state ();
10233 strcpy (p
, "QTSave:");
10235 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10236 error (_("Remote file name too long for trace save packet"));
10237 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10240 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10241 if (*reply
!= '\0')
10242 error (_("Target does not support this command."));
10243 if (strcmp (reply
, "OK") != 0)
10244 error (_("Bogus reply from target: %s"), reply
);
10248 /* This is basically a memory transfer, but needs to be its own packet
10249 because we don't know how the target actually organizes its trace
10250 memory, plus we want to be able to ask for as much as possible, but
10251 not be unhappy if we don't get as much as we ask for. */
10254 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10256 struct remote_state
*rs
= get_remote_state ();
10262 strcpy (p
, "qTBuffer:");
10264 p
+= hexnumstr (p
, offset
);
10266 p
+= hexnumstr (p
, len
);
10270 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10271 if (reply
&& *reply
)
10273 /* 'l' by itself means we're at the end of the buffer and
10274 there is nothing more to get. */
10278 /* Convert the reply into binary. Limit the number of bytes to
10279 convert according to our passed-in buffer size, rather than
10280 what was returned in the packet; if the target is
10281 unexpectedly generous and gives us a bigger reply than we
10282 asked for, we don't want to crash. */
10283 rslt
= hex2bin (target_buf
, buf
, len
);
10287 /* Something went wrong, flag as an error. */
10292 remote_set_disconnected_tracing (int val
)
10294 struct remote_state
*rs
= get_remote_state ();
10296 if (rs
->disconnected_tracing
)
10300 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
10302 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10303 if (*reply
== '\0')
10304 error (_("Target does not support this command."));
10305 if (strcmp (reply
, "OK") != 0)
10306 error (_("Bogus reply from target: %s"), reply
);
10309 warning (_("Target does not support disconnected tracing."));
10313 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10315 struct thread_info
*info
= find_thread_ptid (ptid
);
10317 if (info
&& info
->private)
10318 return info
->private->core
;
10323 remote_set_circular_trace_buffer (int val
)
10325 struct remote_state
*rs
= get_remote_state ();
10328 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
10330 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10331 if (*reply
== '\0')
10332 error (_("Target does not support this command."));
10333 if (strcmp (reply
, "OK") != 0)
10334 error (_("Bogus reply from target: %s"), reply
);
10337 static struct traceframe_info
*
10338 remote_traceframe_info (void)
10342 text
= target_read_stralloc (¤t_target
,
10343 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10346 struct traceframe_info
*info
;
10347 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10349 info
= parse_traceframe_info (text
);
10350 do_cleanups (back_to
);
10358 init_remote_ops (void)
10360 remote_ops
.to_shortname
= "remote";
10361 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
10362 remote_ops
.to_doc
=
10363 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10364 Specify the serial device it is connected to\n\
10365 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
10366 remote_ops
.to_open
= remote_open
;
10367 remote_ops
.to_close
= remote_close
;
10368 remote_ops
.to_detach
= remote_detach
;
10369 remote_ops
.to_disconnect
= remote_disconnect
;
10370 remote_ops
.to_resume
= remote_resume
;
10371 remote_ops
.to_wait
= remote_wait
;
10372 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
10373 remote_ops
.to_store_registers
= remote_store_registers
;
10374 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
10375 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
10376 remote_ops
.to_files_info
= remote_files_info
;
10377 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
10378 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
10379 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
10380 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
10381 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
10382 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
10383 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
10384 remote_ops
.to_region_ok_for_hw_watchpoint
10385 = remote_region_ok_for_hw_watchpoint
;
10386 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
10387 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
10388 remote_ops
.to_kill
= remote_kill
;
10389 remote_ops
.to_load
= generic_load
;
10390 remote_ops
.to_mourn_inferior
= remote_mourn
;
10391 remote_ops
.to_pass_signals
= remote_pass_signals
;
10392 remote_ops
.to_thread_alive
= remote_thread_alive
;
10393 remote_ops
.to_find_new_threads
= remote_threads_info
;
10394 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
10395 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
10396 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
10397 remote_ops
.to_stop
= remote_stop
;
10398 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
10399 remote_ops
.to_rcmd
= remote_rcmd
;
10400 remote_ops
.to_log_command
= serial_log_command
;
10401 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
10402 remote_ops
.to_stratum
= process_stratum
;
10403 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
10404 remote_ops
.to_has_memory
= default_child_has_memory
;
10405 remote_ops
.to_has_stack
= default_child_has_stack
;
10406 remote_ops
.to_has_registers
= default_child_has_registers
;
10407 remote_ops
.to_has_execution
= default_child_has_execution
;
10408 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
10409 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
10410 remote_ops
.to_magic
= OPS_MAGIC
;
10411 remote_ops
.to_memory_map
= remote_memory_map
;
10412 remote_ops
.to_flash_erase
= remote_flash_erase
;
10413 remote_ops
.to_flash_done
= remote_flash_done
;
10414 remote_ops
.to_read_description
= remote_read_description
;
10415 remote_ops
.to_search_memory
= remote_search_memory
;
10416 remote_ops
.to_can_async_p
= remote_can_async_p
;
10417 remote_ops
.to_is_async_p
= remote_is_async_p
;
10418 remote_ops
.to_async
= remote_async
;
10419 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
10420 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
10421 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
10422 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
10423 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
10424 remote_ops
.to_trace_init
= remote_trace_init
;
10425 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
10426 remote_ops
.to_download_trace_state_variable
10427 = remote_download_trace_state_variable
;
10428 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
10429 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
10430 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
10431 remote_ops
.to_trace_start
= remote_trace_start
;
10432 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
10433 remote_ops
.to_trace_stop
= remote_trace_stop
;
10434 remote_ops
.to_trace_find
= remote_trace_find
;
10435 remote_ops
.to_get_trace_state_variable_value
10436 = remote_get_trace_state_variable_value
;
10437 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
10438 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
10439 remote_ops
.to_upload_trace_state_variables
10440 = remote_upload_trace_state_variables
;
10441 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
10442 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
10443 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
10444 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
10445 remote_ops
.to_verify_memory
= remote_verify_memory
;
10446 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
10447 remote_ops
.to_set_permissions
= remote_set_permissions
;
10448 remote_ops
.to_static_tracepoint_marker_at
10449 = remote_static_tracepoint_marker_at
;
10450 remote_ops
.to_static_tracepoint_markers_by_strid
10451 = remote_static_tracepoint_markers_by_strid
;
10452 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
10455 /* Set up the extended remote vector by making a copy of the standard
10456 remote vector and adding to it. */
10459 init_extended_remote_ops (void)
10461 extended_remote_ops
= remote_ops
;
10463 extended_remote_ops
.to_shortname
= "extended-remote";
10464 extended_remote_ops
.to_longname
=
10465 "Extended remote serial target in gdb-specific protocol";
10466 extended_remote_ops
.to_doc
=
10467 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10468 Specify the serial device it is connected to (e.g. /dev/ttya).";
10469 extended_remote_ops
.to_open
= extended_remote_open
;
10470 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
10471 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
10472 extended_remote_ops
.to_detach
= extended_remote_detach
;
10473 extended_remote_ops
.to_attach
= extended_remote_attach
;
10474 extended_remote_ops
.to_kill
= extended_remote_kill
;
10478 remote_can_async_p (void)
10480 if (!target_async_permitted
)
10481 /* We only enable async when the user specifically asks for it. */
10484 /* We're async whenever the serial device is. */
10485 return serial_can_async_p (remote_desc
);
10489 remote_is_async_p (void)
10491 if (!target_async_permitted
)
10492 /* We only enable async when the user specifically asks for it. */
10495 /* We're async whenever the serial device is. */
10496 return serial_is_async_p (remote_desc
);
10499 /* Pass the SERIAL event on and up to the client. One day this code
10500 will be able to delay notifying the client of an event until the
10501 point where an entire packet has been received. */
10503 static void (*async_client_callback
) (enum inferior_event_type event_type
,
10505 static void *async_client_context
;
10506 static serial_event_ftype remote_async_serial_handler
;
10509 remote_async_serial_handler (struct serial
*scb
, void *context
)
10511 /* Don't propogate error information up to the client. Instead let
10512 the client find out about the error by querying the target. */
10513 async_client_callback (INF_REG_EVENT
, async_client_context
);
10517 remote_async_inferior_event_handler (gdb_client_data data
)
10519 inferior_event_handler (INF_REG_EVENT
, NULL
);
10523 remote_async_get_pending_events_handler (gdb_client_data data
)
10525 remote_get_pending_stop_replies ();
10529 remote_async (void (*callback
) (enum inferior_event_type event_type
,
10530 void *context
), void *context
)
10532 if (callback
!= NULL
)
10534 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
10535 async_client_callback
= callback
;
10536 async_client_context
= context
;
10539 serial_async (remote_desc
, NULL
, NULL
);
10543 set_remote_cmd (char *args
, int from_tty
)
10545 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
10549 show_remote_cmd (char *args
, int from_tty
)
10551 /* We can't just use cmd_show_list here, because we want to skip
10552 the redundant "show remote Z-packet" and the legacy aliases. */
10553 struct cleanup
*showlist_chain
;
10554 struct cmd_list_element
*list
= remote_show_cmdlist
;
10555 struct ui_out
*uiout
= current_uiout
;
10557 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
10558 for (; list
!= NULL
; list
= list
->next
)
10559 if (strcmp (list
->name
, "Z-packet") == 0)
10561 else if (list
->type
== not_set_cmd
)
10562 /* Alias commands are exactly like the original, except they
10563 don't have the normal type. */
10567 struct cleanup
*option_chain
10568 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
10570 ui_out_field_string (uiout
, "name", list
->name
);
10571 ui_out_text (uiout
, ": ");
10572 if (list
->type
== show_cmd
)
10573 do_setshow_command ((char *) NULL
, from_tty
, list
);
10575 cmd_func (list
, NULL
, from_tty
);
10576 /* Close the tuple. */
10577 do_cleanups (option_chain
);
10580 /* Close the tuple. */
10581 do_cleanups (showlist_chain
);
10585 /* Function to be called whenever a new objfile (shlib) is detected. */
10587 remote_new_objfile (struct objfile
*objfile
)
10589 if (remote_desc
!= 0) /* Have a remote connection. */
10590 remote_check_symbols (objfile
);
10593 /* Pull all the tracepoints defined on the target and create local
10594 data structures representing them. We don't want to create real
10595 tracepoints yet, we don't want to mess up the user's existing
10599 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
10601 struct remote_state
*rs
= get_remote_state ();
10604 /* Ask for a first packet of tracepoint definition. */
10606 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10608 while (*p
&& *p
!= 'l')
10610 parse_tracepoint_definition (p
, utpp
);
10611 /* Ask for another packet of tracepoint definition. */
10613 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10620 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
10622 struct remote_state
*rs
= get_remote_state ();
10625 /* Ask for a first packet of variable definition. */
10627 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10629 while (*p
&& *p
!= 'l')
10631 parse_tsv_definition (p
, utsvp
);
10632 /* Ask for another packet of variable definition. */
10634 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10641 _initialize_remote (void)
10643 struct remote_state
*rs
;
10644 struct cmd_list_element
*cmd
;
10647 /* architecture specific data */
10648 remote_gdbarch_data_handle
=
10649 gdbarch_data_register_post_init (init_remote_state
);
10650 remote_g_packet_data_handle
=
10651 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
10653 /* Initialize the per-target state. At the moment there is only one
10654 of these, not one per target. Only one target is active at a
10655 time. The default buffer size is unimportant; it will be expanded
10656 whenever a larger buffer is needed. */
10657 rs
= get_remote_state_raw ();
10658 rs
->buf_size
= 400;
10659 rs
->buf
= xmalloc (rs
->buf_size
);
10661 init_remote_ops ();
10662 add_target (&remote_ops
);
10664 init_extended_remote_ops ();
10665 add_target (&extended_remote_ops
);
10667 /* Hook into new objfile notification. */
10668 observer_attach_new_objfile (remote_new_objfile
);
10670 /* Set up signal handlers. */
10671 sigint_remote_token
=
10672 create_async_signal_handler (async_remote_interrupt
, NULL
);
10673 sigint_remote_twice_token
=
10674 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
10677 init_remote_threadtests ();
10680 /* set/show remote ... */
10682 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
10683 Remote protocol specific variables\n\
10684 Configure various remote-protocol specific variables such as\n\
10685 the packets being used"),
10686 &remote_set_cmdlist
, "set remote ",
10687 0 /* allow-unknown */, &setlist
);
10688 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
10689 Remote protocol specific variables\n\
10690 Configure various remote-protocol specific variables such as\n\
10691 the packets being used"),
10692 &remote_show_cmdlist
, "show remote ",
10693 0 /* allow-unknown */, &showlist
);
10695 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
10696 Compare section data on target to the exec file.\n\
10697 Argument is a single section name (default: all loaded sections)."),
10700 add_cmd ("packet", class_maintenance
, packet_command
, _("\
10701 Send an arbitrary packet to a remote target.\n\
10702 maintenance packet TEXT\n\
10703 If GDB is talking to an inferior via the GDB serial protocol, then\n\
10704 this command sends the string TEXT to the inferior, and displays the\n\
10705 response packet. GDB supplies the initial `$' character, and the\n\
10706 terminating `#' character and checksum."),
10709 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
10710 Set whether to send break if interrupted."), _("\
10711 Show whether to send break if interrupted."), _("\
10712 If set, a break, instead of a cntrl-c, is sent to the remote target."),
10713 set_remotebreak
, show_remotebreak
,
10714 &setlist
, &showlist
);
10715 cmd_name
= "remotebreak";
10716 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
10717 deprecate_cmd (cmd
, "set remote interrupt-sequence");
10718 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
10719 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
10720 deprecate_cmd (cmd
, "show remote interrupt-sequence");
10722 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
10723 interrupt_sequence_modes
, &interrupt_sequence_mode
,
10725 Set interrupt sequence to remote target."), _("\
10726 Show interrupt sequence to remote target."), _("\
10727 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10728 NULL
, show_interrupt_sequence
,
10729 &remote_set_cmdlist
,
10730 &remote_show_cmdlist
);
10732 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10733 &interrupt_on_connect
, _("\
10734 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10735 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10736 If set, interrupt sequence is sent to remote target."),
10738 &remote_set_cmdlist
, &remote_show_cmdlist
);
10740 /* Install commands for configuring memory read/write packets. */
10742 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10743 Set the maximum number of bytes per memory write packet (deprecated)."),
10745 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10746 Show the maximum number of bytes per memory write packet (deprecated)."),
10748 add_cmd ("memory-write-packet-size", no_class
,
10749 set_memory_write_packet_size
, _("\
10750 Set the maximum number of bytes per memory-write packet.\n\
10751 Specify the number of bytes in a packet or 0 (zero) for the\n\
10752 default packet size. The actual limit is further reduced\n\
10753 dependent on the target. Specify ``fixed'' to disable the\n\
10754 further restriction and ``limit'' to enable that restriction."),
10755 &remote_set_cmdlist
);
10756 add_cmd ("memory-read-packet-size", no_class
,
10757 set_memory_read_packet_size
, _("\
10758 Set the maximum number of bytes per memory-read packet.\n\
10759 Specify the number of bytes in a packet or 0 (zero) for the\n\
10760 default packet size. The actual limit is further reduced\n\
10761 dependent on the target. Specify ``fixed'' to disable the\n\
10762 further restriction and ``limit'' to enable that restriction."),
10763 &remote_set_cmdlist
);
10764 add_cmd ("memory-write-packet-size", no_class
,
10765 show_memory_write_packet_size
,
10766 _("Show the maximum number of bytes per memory-write packet."),
10767 &remote_show_cmdlist
);
10768 add_cmd ("memory-read-packet-size", no_class
,
10769 show_memory_read_packet_size
,
10770 _("Show the maximum number of bytes per memory-read packet."),
10771 &remote_show_cmdlist
);
10773 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10774 &remote_hw_watchpoint_limit
, _("\
10775 Set the maximum number of target hardware watchpoints."), _("\
10776 Show the maximum number of target hardware watchpoints."), _("\
10777 Specify a negative limit for unlimited."),
10778 NULL
, NULL
, /* FIXME: i18n: The maximum
10779 number of target hardware
10780 watchpoints is %s. */
10781 &remote_set_cmdlist
, &remote_show_cmdlist
);
10782 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
10783 &remote_hw_watchpoint_length_limit
, _("\
10784 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
10785 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
10786 Specify a negative limit for unlimited."),
10787 NULL
, NULL
, /* FIXME: i18n: The maximum
10788 length (in bytes) of a target
10789 hardware watchpoint is %s. */
10790 &remote_set_cmdlist
, &remote_show_cmdlist
);
10791 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10792 &remote_hw_breakpoint_limit
, _("\
10793 Set the maximum number of target hardware breakpoints."), _("\
10794 Show the maximum number of target hardware breakpoints."), _("\
10795 Specify a negative limit for unlimited."),
10796 NULL
, NULL
, /* FIXME: i18n: The maximum
10797 number of target hardware
10798 breakpoints is %s. */
10799 &remote_set_cmdlist
, &remote_show_cmdlist
);
10801 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
10802 &remote_address_size
, _("\
10803 Set the maximum size of the address (in bits) in a memory packet."), _("\
10804 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
10806 NULL
, /* FIXME: i18n: */
10807 &setlist
, &showlist
);
10809 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
10810 "X", "binary-download", 1);
10812 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
10813 "vCont", "verbose-resume", 0);
10815 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
10816 "QPassSignals", "pass-signals", 0);
10818 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
10819 "qSymbol", "symbol-lookup", 0);
10821 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
10822 "P", "set-register", 1);
10824 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
10825 "p", "fetch-register", 1);
10827 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
10828 "Z0", "software-breakpoint", 0);
10830 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
10831 "Z1", "hardware-breakpoint", 0);
10833 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
10834 "Z2", "write-watchpoint", 0);
10836 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
10837 "Z3", "read-watchpoint", 0);
10839 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
10840 "Z4", "access-watchpoint", 0);
10842 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
10843 "qXfer:auxv:read", "read-aux-vector", 0);
10845 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
10846 "qXfer:features:read", "target-features", 0);
10848 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
10849 "qXfer:libraries:read", "library-info", 0);
10851 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
10852 "qXfer:memory-map:read", "memory-map", 0);
10854 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
10855 "qXfer:spu:read", "read-spu-object", 0);
10857 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
10858 "qXfer:spu:write", "write-spu-object", 0);
10860 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
10861 "qXfer:osdata:read", "osdata", 0);
10863 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
10864 "qXfer:threads:read", "threads", 0);
10866 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
10867 "qXfer:siginfo:read", "read-siginfo-object", 0);
10869 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
10870 "qXfer:siginfo:write", "write-siginfo-object", 0);
10872 add_packet_config_cmd
10873 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
10874 "qXfer:trace-frame-info:read", "traceframe-info", 0);
10876 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
10877 "qGetTLSAddr", "get-thread-local-storage-address",
10880 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
10881 "qGetTIBAddr", "get-thread-information-block-address",
10884 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
10885 "bc", "reverse-continue", 0);
10887 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
10888 "bs", "reverse-step", 0);
10890 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
10891 "qSupported", "supported-packets", 0);
10893 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
10894 "qSearch:memory", "search-memory", 0);
10896 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
10897 "vFile:open", "hostio-open", 0);
10899 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
10900 "vFile:pread", "hostio-pread", 0);
10902 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
10903 "vFile:pwrite", "hostio-pwrite", 0);
10905 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
10906 "vFile:close", "hostio-close", 0);
10908 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
10909 "vFile:unlink", "hostio-unlink", 0);
10911 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
10912 "vAttach", "attach", 0);
10914 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
10917 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
10918 "QStartNoAckMode", "noack", 0);
10920 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
10921 "vKill", "kill", 0);
10923 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
10924 "qAttached", "query-attached", 0);
10926 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
10927 "ConditionalTracepoints",
10928 "conditional-tracepoints", 0);
10929 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10930 "FastTracepoints", "fast-tracepoints", 0);
10932 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
10933 "TracepointSource", "TracepointSource", 0);
10935 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
10936 "QAllow", "allow", 0);
10938 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
10939 "StaticTracepoints", "static-tracepoints", 0);
10941 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
10942 "qXfer:statictrace:read", "read-sdata-object", 0);
10944 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
10945 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
10947 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10948 Z sub-packet has its own set and show commands, but users may
10949 have sets to this variable in their .gdbinit files (or in their
10951 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10952 &remote_Z_packet_detect
, _("\
10953 Set use of remote protocol `Z' packets"), _("\
10954 Show use of remote protocol `Z' packets "), _("\
10955 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10957 set_remote_protocol_Z_packet_cmd
,
10958 show_remote_protocol_Z_packet_cmd
,
10959 /* FIXME: i18n: Use of remote protocol
10960 `Z' packets is %s. */
10961 &remote_set_cmdlist
, &remote_show_cmdlist
);
10963 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10964 Manipulate files on the remote system\n\
10965 Transfer files to and from the remote target system."),
10966 &remote_cmdlist
, "remote ",
10967 0 /* allow-unknown */, &cmdlist
);
10969 add_cmd ("put", class_files
, remote_put_command
,
10970 _("Copy a local file to the remote system."),
10973 add_cmd ("get", class_files
, remote_get_command
,
10974 _("Copy a remote file to the local system."),
10977 add_cmd ("delete", class_files
, remote_delete_command
,
10978 _("Delete a remote file."),
10981 remote_exec_file
= xstrdup ("");
10982 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10983 &remote_exec_file
, _("\
10984 Set the remote pathname for \"run\""), _("\
10985 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10986 &remote_set_cmdlist
, &remote_show_cmdlist
);
10988 /* Eventually initialize fileio. See fileio.c */
10989 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10991 /* Take advantage of the fact that the LWP field is not used, to tag
10992 special ptids with it set to != 0. */
10993 magic_null_ptid
= ptid_build (42000, 1, -1);
10994 not_sent_ptid
= ptid_build (42000, 1, -2);
10995 any_thread_ptid
= ptid_build (42000, 1, 0);
10997 target_buf_size
= 2048;
10998 target_buf
= xmalloc (target_buf_size
);