1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
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"
72 /* Temp hacks for tracepoint encoding migration. */
73 static char *target_buf
;
74 static long target_buf_size
;
76 /* The size to align memory write packets, when practical. The protocol
77 does not guarantee any alignment, and gdb will generate short
78 writes and unaligned writes, but even as a best-effort attempt this
79 can improve bulk transfers. For instance, if a write is misaligned
80 relative to the target's data bus, the stub may need to make an extra
81 round trip fetching data from the target. This doesn't make a
82 huge difference, but it's easy to do, so we try to be helpful.
84 The alignment chosen is arbitrary; usually data bus width is
85 important here, not the possibly larger cache line size. */
86 enum { REMOTE_ALIGN_WRITES
= 16 };
88 /* Prototypes for local functions. */
89 static void cleanup_sigint_signal_handler (void *dummy
);
90 static void initialize_sigint_signal_handler (void);
91 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
92 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
93 int forever
, int *is_notif
);
95 static void handle_remote_sigint (int);
96 static void handle_remote_sigint_twice (int);
97 static void async_remote_interrupt (gdb_client_data
);
98 void async_remote_interrupt_twice (gdb_client_data
);
100 static void remote_files_info (struct target_ops
*ignore
);
102 static void remote_prepare_to_store (struct regcache
*regcache
);
104 static void remote_open (char *name
, int from_tty
);
106 static void extended_remote_open (char *name
, int from_tty
);
108 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
110 static void remote_close (int quitting
);
112 static void remote_mourn (struct target_ops
*ops
);
114 static void extended_remote_restart (void);
116 static void extended_remote_mourn (struct target_ops
*);
118 static void remote_mourn_1 (struct target_ops
*);
120 static void remote_send (char **buf
, long *sizeof_buf_p
);
122 static int readchar (int timeout
);
124 static void remote_kill (struct target_ops
*ops
);
126 static int tohex (int nib
);
128 static int remote_can_async_p (void);
130 static int remote_is_async_p (void);
132 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
133 void *context
), void *context
);
135 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
137 static void remote_interrupt (int signo
);
139 static void remote_interrupt_twice (int signo
);
141 static void interrupt_query (void);
143 static void set_general_thread (struct ptid ptid
);
144 static void set_continue_thread (struct ptid ptid
);
146 static void get_offsets (void);
148 static void skip_frame (void);
150 static long read_frame (char **buf_p
, long *sizeof_buf
);
152 static int hexnumlen (ULONGEST num
);
154 static void init_remote_ops (void);
156 static void init_extended_remote_ops (void);
158 static void remote_stop (ptid_t
);
160 static int ishex (int ch
, int *val
);
162 static int stubhex (int ch
);
164 static int hexnumstr (char *, ULONGEST
);
166 static int hexnumnstr (char *, ULONGEST
, int);
168 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
170 static void print_packet (char *);
172 static void compare_sections_command (char *, int);
174 static void packet_command (char *, int);
176 static int stub_unpack_int (char *buff
, int fieldlength
);
178 static ptid_t
remote_current_thread (ptid_t oldptid
);
180 static void remote_find_new_threads (void);
182 static void record_currthread (ptid_t currthread
);
184 static int fromhex (int a
);
186 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
188 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
190 static int putpkt_binary (char *buf
, int cnt
);
192 static void check_binary_download (CORE_ADDR addr
);
194 struct packet_config
;
196 static void show_packet_config_cmd (struct packet_config
*config
);
198 static void update_packet_config (struct packet_config
*config
);
200 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
201 struct cmd_list_element
*c
);
203 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
205 struct cmd_list_element
*c
,
208 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
209 static ptid_t
read_ptid (char *buf
, char **obuf
);
211 static void remote_set_permissions (void);
214 static int remote_get_trace_status (struct trace_status
*ts
);
216 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
218 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
220 static void remote_query_supported (void);
222 static void remote_check_symbols (struct objfile
*objfile
);
224 void _initialize_remote (void);
227 static void stop_reply_xfree (struct stop_reply
*);
228 static void remote_parse_stop_reply (char *, struct stop_reply
*);
229 static void push_stop_reply (struct stop_reply
*);
230 static void discard_pending_stop_replies (struct inferior
*);
231 static int peek_stop_reply (ptid_t ptid
);
233 static void remote_async_inferior_event_handler (gdb_client_data
);
235 static void remote_terminal_ours (void);
237 static int remote_read_description_p (struct target_ops
*target
);
239 static void remote_console_output (char *msg
);
241 static int remote_supports_cond_breakpoints (void);
243 static int remote_can_run_breakpoint_commands (void);
247 static struct cmd_list_element
*remote_cmdlist
;
249 /* For "set remote" and "show remote". */
251 static struct cmd_list_element
*remote_set_cmdlist
;
252 static struct cmd_list_element
*remote_show_cmdlist
;
254 /* Description of the remote protocol state for the currently
255 connected target. This is per-target state, and independent of the
256 selected architecture. */
260 /* A buffer to use for incoming packets, and its current size. The
261 buffer is grown dynamically for larger incoming packets.
262 Outgoing packets may also be constructed in this buffer.
263 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
264 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
269 /* True if we're going through initial connection setup (finding out
270 about the remote side's threads, relocating symbols, etc.). */
273 /* If we negotiated packet size explicitly (and thus can bypass
274 heuristics for the largest packet size that will not overflow
275 a buffer in the stub), this will be set to that packet size.
276 Otherwise zero, meaning to use the guessed size. */
277 long explicit_packet_size
;
279 /* remote_wait is normally called when the target is running and
280 waits for a stop reply packet. But sometimes we need to call it
281 when the target is already stopped. We can send a "?" packet
282 and have remote_wait read the response. Or, if we already have
283 the response, we can stash it in BUF and tell remote_wait to
284 skip calling getpkt. This flag is set when BUF contains a
285 stop reply packet and the target is not waiting. */
286 int cached_wait_status
;
288 /* True, if in no ack mode. That is, neither GDB nor the stub will
289 expect acks from each other. The connection is assumed to be
293 /* True if we're connected in extended remote mode. */
296 /* True if the stub reported support for multi-process
298 int multi_process_aware
;
300 /* True if we resumed the target and we're waiting for the target to
301 stop. In the mean time, we can't start another command/query.
302 The remote server wouldn't be ready to process it, so we'd
303 timeout waiting for a reply that would never come and eventually
304 we'd close the connection. This can happen in asynchronous mode
305 because we allow GDB commands while the target is running. */
306 int waiting_for_stop_reply
;
308 /* True if the stub reports support for non-stop mode. */
311 /* True if the stub reports support for vCont;t. */
314 /* True if the stub reports support for conditional tracepoints. */
315 int cond_tracepoints
;
317 /* True if the stub reports support for target-side breakpoint
319 int cond_breakpoints
;
321 /* True if the stub reports support for target-side breakpoint
323 int breakpoint_commands
;
325 /* True if the stub reports support for fast tracepoints. */
326 int fast_tracepoints
;
328 /* True if the stub reports support for static tracepoints. */
329 int static_tracepoints
;
331 /* True if the stub reports support for installing tracepoint while
333 int install_in_trace
;
335 /* True if the stub can continue running a trace while GDB is
337 int disconnected_tracing
;
339 /* True if the stub reports support for enabling and disabling
340 tracepoints while a trace experiment is running. */
341 int enable_disable_tracepoints
;
343 /* True if the stub can collect strings using tracenz bytecode. */
346 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
347 responded to that. */
351 /* Private data that we'll store in (struct thread_info)->private. */
352 struct private_thread_info
359 free_private_thread_info (struct private_thread_info
*info
)
365 /* Returns true if the multi-process extensions are in effect. */
367 remote_multi_process_p (struct remote_state
*rs
)
369 return rs
->multi_process_aware
;
372 /* This data could be associated with a target, but we do not always
373 have access to the current target when we need it, so for now it is
374 static. This will be fine for as long as only one target is in use
376 static struct remote_state remote_state
;
378 static struct remote_state
*
379 get_remote_state_raw (void)
381 return &remote_state
;
384 /* Description of the remote protocol for a given architecture. */
388 long offset
; /* Offset into G packet. */
389 long regnum
; /* GDB's internal register number. */
390 LONGEST pnum
; /* Remote protocol register number. */
391 int in_g_packet
; /* Always part of G packet. */
392 /* long size in bytes; == register_size (target_gdbarch (), regnum);
394 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
398 struct remote_arch_state
400 /* Description of the remote protocol registers. */
401 long sizeof_g_packet
;
403 /* Description of the remote protocol registers indexed by REGNUM
404 (making an array gdbarch_num_regs in size). */
405 struct packet_reg
*regs
;
407 /* This is the size (in chars) of the first response to the ``g''
408 packet. It is used as a heuristic when determining the maximum
409 size of memory-read and memory-write packets. A target will
410 typically only reserve a buffer large enough to hold the ``g''
411 packet. The size does not include packet overhead (headers and
413 long actual_register_packet_size
;
415 /* This is the maximum size (in chars) of a non read/write packet.
416 It is also used as a cap on the size of read/write packets. */
417 long remote_packet_size
;
420 long sizeof_pkt
= 2000;
422 /* Utility: generate error from an incoming stub packet. */
424 trace_error (char *buf
)
427 return; /* not an error msg */
430 case '1': /* malformed packet error */
431 if (*++buf
== '0') /* general case: */
432 error (_("remote.c: error in outgoing packet."));
434 error (_("remote.c: error in outgoing packet at field #%ld."),
435 strtol (buf
, NULL
, 16));
437 error (_("trace API error 0x%s."), ++buf
);
439 error (_("Target returns error code '%s'."), buf
);
443 /* Utility: wait for reply from stub, while accepting "O" packets. */
445 remote_get_noisy_reply (char **buf_p
,
448 do /* Loop on reply from remote stub. */
452 QUIT
; /* Allow user to bail out with ^C. */
453 getpkt (buf_p
, sizeof_buf
, 0);
457 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
460 CORE_ADDR from
, to
, org_to
;
462 int adjusted_size
= 0;
463 volatile struct gdb_exception ex
;
465 p
= buf
+ strlen ("qRelocInsn:");
466 pp
= unpack_varlen_hex (p
, &ul
);
468 error (_("invalid qRelocInsn packet: %s"), buf
);
472 unpack_varlen_hex (p
, &ul
);
477 TRY_CATCH (ex
, RETURN_MASK_ALL
)
479 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
483 adjusted_size
= to
- org_to
;
485 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
488 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
490 /* Propagate memory errors silently back to the target.
491 The stub may have limited the range of addresses we
492 can write to, for example. */
497 /* Something unexpectedly bad happened. Be verbose so
498 we can tell what, and propagate the error back to the
499 stub, so it doesn't get stuck waiting for a
501 exception_fprintf (gdb_stderr
, ex
,
502 _("warning: relocating instruction: "));
506 else if (buf
[0] == 'O' && buf
[1] != 'K')
507 remote_console_output (buf
+ 1); /* 'O' message from stub */
509 return buf
; /* Here's the actual reply. */
514 /* Handle for retreving the remote protocol data from gdbarch. */
515 static struct gdbarch_data
*remote_gdbarch_data_handle
;
517 static struct remote_arch_state
*
518 get_remote_arch_state (void)
520 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
523 /* Fetch the global remote target state. */
525 static struct remote_state
*
526 get_remote_state (void)
528 /* Make sure that the remote architecture state has been
529 initialized, because doing so might reallocate rs->buf. Any
530 function which calls getpkt also needs to be mindful of changes
531 to rs->buf, but this call limits the number of places which run
533 get_remote_arch_state ();
535 return get_remote_state_raw ();
539 compare_pnums (const void *lhs_
, const void *rhs_
)
541 const struct packet_reg
* const *lhs
= lhs_
;
542 const struct packet_reg
* const *rhs
= rhs_
;
544 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
546 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
553 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
555 int regnum
, num_remote_regs
, offset
;
556 struct packet_reg
**remote_regs
;
558 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
560 struct packet_reg
*r
= ®s
[regnum
];
562 if (register_size (gdbarch
, regnum
) == 0)
563 /* Do not try to fetch zero-sized (placeholder) registers. */
566 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
571 /* Define the g/G packet format as the contents of each register
572 with a remote protocol number, in order of ascending protocol
575 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
576 * sizeof (struct packet_reg
*));
577 for (num_remote_regs
= 0, regnum
= 0;
578 regnum
< gdbarch_num_regs (gdbarch
);
580 if (regs
[regnum
].pnum
!= -1)
581 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
583 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
586 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
588 remote_regs
[regnum
]->in_g_packet
= 1;
589 remote_regs
[regnum
]->offset
= offset
;
590 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
596 /* Given the architecture described by GDBARCH, return the remote
597 protocol register's number and the register's offset in the g/G
598 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
599 If the target does not have a mapping for REGNUM, return false,
600 otherwise, return true. */
603 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
604 int *pnum
, int *poffset
)
607 struct packet_reg
*regs
;
608 struct cleanup
*old_chain
;
610 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
612 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
613 old_chain
= make_cleanup (xfree
, regs
);
615 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
617 *pnum
= regs
[regnum
].pnum
;
618 *poffset
= regs
[regnum
].offset
;
620 do_cleanups (old_chain
);
626 init_remote_state (struct gdbarch
*gdbarch
)
628 struct remote_state
*rs
= get_remote_state_raw ();
629 struct remote_arch_state
*rsa
;
631 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
633 /* Use the architecture to build a regnum<->pnum table, which will be
634 1:1 unless a feature set specifies otherwise. */
635 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
636 gdbarch_num_regs (gdbarch
),
639 /* Record the maximum possible size of the g packet - it may turn out
641 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
643 /* Default maximum number of characters in a packet body. Many
644 remote stubs have a hardwired buffer size of 400 bytes
645 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
646 as the maximum packet-size to ensure that the packet and an extra
647 NUL character can always fit in the buffer. This stops GDB
648 trashing stubs that try to squeeze an extra NUL into what is
649 already a full buffer (As of 1999-12-04 that was most stubs). */
650 rsa
->remote_packet_size
= 400 - 1;
652 /* This one is filled in when a ``g'' packet is received. */
653 rsa
->actual_register_packet_size
= 0;
655 /* Should rsa->sizeof_g_packet needs more space than the
656 default, adjust the size accordingly. Remember that each byte is
657 encoded as two characters. 32 is the overhead for the packet
658 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
659 (``$NN:G...#NN'') is a better guess, the below has been padded a
661 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
662 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
664 /* Make sure that the packet buffer is plenty big enough for
665 this architecture. */
666 if (rs
->buf_size
< rsa
->remote_packet_size
)
668 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
669 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
675 /* Return the current allowed size of a remote packet. This is
676 inferred from the current architecture, and should be used to
677 limit the length of outgoing packets. */
679 get_remote_packet_size (void)
681 struct remote_state
*rs
= get_remote_state ();
682 struct remote_arch_state
*rsa
= get_remote_arch_state ();
684 if (rs
->explicit_packet_size
)
685 return rs
->explicit_packet_size
;
687 return rsa
->remote_packet_size
;
690 static struct packet_reg
*
691 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
693 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
697 struct packet_reg
*r
= &rsa
->regs
[regnum
];
699 gdb_assert (r
->regnum
== regnum
);
704 static struct packet_reg
*
705 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
709 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
711 struct packet_reg
*r
= &rsa
->regs
[i
];
719 /* FIXME: graces/2002-08-08: These variables should eventually be
720 bound to an instance of the target object (as in gdbarch-tdep()),
721 when such a thing exists. */
723 /* This is set to the data address of the access causing the target
724 to stop for a watchpoint. */
725 static CORE_ADDR remote_watch_data_address
;
727 /* This is non-zero if target stopped for a watchpoint. */
728 static int remote_stopped_by_watchpoint_p
;
730 static struct target_ops remote_ops
;
732 static struct target_ops extended_remote_ops
;
734 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
735 ``forever'' still use the normal timeout mechanism. This is
736 currently used by the ASYNC code to guarentee that target reads
737 during the initial connect always time-out. Once getpkt has been
738 modified to return a timeout indication and, in turn
739 remote_wait()/wait_for_inferior() have gained a timeout parameter
741 static int wait_forever_enabled_p
= 1;
743 /* Allow the user to specify what sequence to send to the remote
744 when he requests a program interruption: Although ^C is usually
745 what remote systems expect (this is the default, here), it is
746 sometimes preferable to send a break. On other systems such
747 as the Linux kernel, a break followed by g, which is Magic SysRq g
748 is required in order to interrupt the execution. */
749 const char interrupt_sequence_control_c
[] = "Ctrl-C";
750 const char interrupt_sequence_break
[] = "BREAK";
751 const char interrupt_sequence_break_g
[] = "BREAK-g";
752 static const char *const interrupt_sequence_modes
[] =
754 interrupt_sequence_control_c
,
755 interrupt_sequence_break
,
756 interrupt_sequence_break_g
,
759 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
762 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
763 struct cmd_list_element
*c
,
766 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
767 fprintf_filtered (file
,
768 _("Send the ASCII ETX character (Ctrl-c) "
769 "to the remote target to interrupt the "
770 "execution of the program.\n"));
771 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
772 fprintf_filtered (file
,
773 _("send a break signal to the remote target "
774 "to interrupt the execution of the program.\n"));
775 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
776 fprintf_filtered (file
,
777 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
778 "the remote target to interrupt the execution "
779 "of Linux kernel.\n"));
781 internal_error (__FILE__
, __LINE__
,
782 _("Invalid value for interrupt_sequence_mode: %s."),
783 interrupt_sequence_mode
);
786 /* This boolean variable specifies whether interrupt_sequence is sent
787 to the remote target when gdb connects to it.
788 This is mostly needed when you debug the Linux kernel: The Linux kernel
789 expects BREAK g which is Magic SysRq g for connecting gdb. */
790 static int interrupt_on_connect
= 0;
792 /* This variable is used to implement the "set/show remotebreak" commands.
793 Since these commands are now deprecated in favor of "set/show remote
794 interrupt-sequence", it no longer has any effect on the code. */
795 static int remote_break
;
798 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
801 interrupt_sequence_mode
= interrupt_sequence_break
;
803 interrupt_sequence_mode
= interrupt_sequence_control_c
;
807 show_remotebreak (struct ui_file
*file
, int from_tty
,
808 struct cmd_list_element
*c
,
813 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
814 remote_open knows that we don't have a file open when the program
816 static struct serial
*remote_desc
= NULL
;
818 /* This variable sets the number of bits in an address that are to be
819 sent in a memory ("M" or "m") packet. Normally, after stripping
820 leading zeros, the entire address would be sent. This variable
821 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
822 initial implementation of remote.c restricted the address sent in
823 memory packets to ``host::sizeof long'' bytes - (typically 32
824 bits). Consequently, for 64 bit targets, the upper 32 bits of an
825 address was never sent. Since fixing this bug may cause a break in
826 some remote targets this variable is principly provided to
827 facilitate backward compatibility. */
829 static unsigned int remote_address_size
;
831 /* Temporary to track who currently owns the terminal. See
832 remote_terminal_* for more details. */
834 static int remote_async_terminal_ours_p
;
836 /* The executable file to use for "run" on the remote side. */
838 static char *remote_exec_file
= "";
841 /* User configurable variables for the number of characters in a
842 memory read/write packet. MIN (rsa->remote_packet_size,
843 rsa->sizeof_g_packet) is the default. Some targets need smaller
844 values (fifo overruns, et.al.) and some users need larger values
845 (speed up transfers). The variables ``preferred_*'' (the user
846 request), ``current_*'' (what was actually set) and ``forced_*''
847 (Positive - a soft limit, negative - a hard limit). */
849 struct memory_packet_config
856 /* Compute the current size of a read/write packet. Since this makes
857 use of ``actual_register_packet_size'' the computation is dynamic. */
860 get_memory_packet_size (struct memory_packet_config
*config
)
862 struct remote_state
*rs
= get_remote_state ();
863 struct remote_arch_state
*rsa
= get_remote_arch_state ();
865 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
866 law?) that some hosts don't cope very well with large alloca()
867 calls. Eventually the alloca() code will be replaced by calls to
868 xmalloc() and make_cleanups() allowing this restriction to either
869 be lifted or removed. */
870 #ifndef MAX_REMOTE_PACKET_SIZE
871 #define MAX_REMOTE_PACKET_SIZE 16384
873 /* NOTE: 20 ensures we can write at least one byte. */
874 #ifndef MIN_REMOTE_PACKET_SIZE
875 #define MIN_REMOTE_PACKET_SIZE 20
880 if (config
->size
<= 0)
881 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
883 what_they_get
= config
->size
;
887 what_they_get
= get_remote_packet_size ();
888 /* Limit the packet to the size specified by the user. */
890 && what_they_get
> config
->size
)
891 what_they_get
= config
->size
;
893 /* Limit it to the size of the targets ``g'' response unless we have
894 permission from the stub to use a larger packet size. */
895 if (rs
->explicit_packet_size
== 0
896 && rsa
->actual_register_packet_size
> 0
897 && what_they_get
> rsa
->actual_register_packet_size
)
898 what_they_get
= rsa
->actual_register_packet_size
;
900 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
901 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
902 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
903 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
905 /* Make sure there is room in the global buffer for this packet
906 (including its trailing NUL byte). */
907 if (rs
->buf_size
< what_they_get
+ 1)
909 rs
->buf_size
= 2 * what_they_get
;
910 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
913 return what_they_get
;
916 /* Update the size of a read/write packet. If they user wants
917 something really big then do a sanity check. */
920 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
922 int fixed_p
= config
->fixed_p
;
923 long size
= config
->size
;
926 error (_("Argument required (integer, `fixed' or `limited')."));
927 else if (strcmp (args
, "hard") == 0
928 || strcmp (args
, "fixed") == 0)
930 else if (strcmp (args
, "soft") == 0
931 || strcmp (args
, "limit") == 0)
937 size
= strtoul (args
, &end
, 0);
939 error (_("Invalid %s (bad syntax)."), config
->name
);
941 /* Instead of explicitly capping the size of a packet to
942 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
943 instead allowed to set the size to something arbitrarily
945 if (size
> MAX_REMOTE_PACKET_SIZE
)
946 error (_("Invalid %s (too large)."), config
->name
);
950 if (fixed_p
&& !config
->fixed_p
)
952 if (! query (_("The target may not be able to correctly handle a %s\n"
953 "of %ld bytes. Change the packet size? "),
955 error (_("Packet size not changed."));
957 /* Update the config. */
958 config
->fixed_p
= fixed_p
;
963 show_memory_packet_size (struct memory_packet_config
*config
)
965 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
967 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
968 get_memory_packet_size (config
));
970 printf_filtered (_("Packets are limited to %ld bytes.\n"),
971 get_memory_packet_size (config
));
974 static struct memory_packet_config memory_write_packet_config
=
976 "memory-write-packet-size",
980 set_memory_write_packet_size (char *args
, int from_tty
)
982 set_memory_packet_size (args
, &memory_write_packet_config
);
986 show_memory_write_packet_size (char *args
, int from_tty
)
988 show_memory_packet_size (&memory_write_packet_config
);
992 get_memory_write_packet_size (void)
994 return get_memory_packet_size (&memory_write_packet_config
);
997 static struct memory_packet_config memory_read_packet_config
=
999 "memory-read-packet-size",
1003 set_memory_read_packet_size (char *args
, int from_tty
)
1005 set_memory_packet_size (args
, &memory_read_packet_config
);
1009 show_memory_read_packet_size (char *args
, int from_tty
)
1011 show_memory_packet_size (&memory_read_packet_config
);
1015 get_memory_read_packet_size (void)
1017 long size
= get_memory_packet_size (&memory_read_packet_config
);
1019 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1020 extra buffer size argument before the memory read size can be
1021 increased beyond this. */
1022 if (size
> get_remote_packet_size ())
1023 size
= get_remote_packet_size ();
1028 /* Generic configuration support for packets the stub optionally
1029 supports. Allows the user to specify the use of the packet as well
1030 as allowing GDB to auto-detect support in the remote stub. */
1034 PACKET_SUPPORT_UNKNOWN
= 0,
1039 struct packet_config
1043 enum auto_boolean detect
;
1044 enum packet_support support
;
1047 /* Analyze a packet's return value and update the packet config
1058 update_packet_config (struct packet_config
*config
)
1060 switch (config
->detect
)
1062 case AUTO_BOOLEAN_TRUE
:
1063 config
->support
= PACKET_ENABLE
;
1065 case AUTO_BOOLEAN_FALSE
:
1066 config
->support
= PACKET_DISABLE
;
1068 case AUTO_BOOLEAN_AUTO
:
1069 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1075 show_packet_config_cmd (struct packet_config
*config
)
1077 char *support
= "internal-error";
1079 switch (config
->support
)
1082 support
= "enabled";
1084 case PACKET_DISABLE
:
1085 support
= "disabled";
1087 case PACKET_SUPPORT_UNKNOWN
:
1088 support
= "unknown";
1091 switch (config
->detect
)
1093 case AUTO_BOOLEAN_AUTO
:
1094 printf_filtered (_("Support for the `%s' packet "
1095 "is auto-detected, currently %s.\n"),
1096 config
->name
, support
);
1098 case AUTO_BOOLEAN_TRUE
:
1099 case AUTO_BOOLEAN_FALSE
:
1100 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1101 config
->name
, support
);
1107 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1108 const char *title
, int legacy
)
1114 config
->name
= name
;
1115 config
->title
= title
;
1116 config
->detect
= AUTO_BOOLEAN_AUTO
;
1117 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1118 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1120 show_doc
= xstrprintf ("Show current use of remote "
1121 "protocol `%s' (%s) packet",
1123 /* set/show TITLE-packet {auto,on,off} */
1124 cmd_name
= xstrprintf ("%s-packet", title
);
1125 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1126 &config
->detect
, set_doc
,
1127 show_doc
, NULL
, /* help_doc */
1128 set_remote_protocol_packet_cmd
,
1129 show_remote_protocol_packet_cmd
,
1130 &remote_set_cmdlist
, &remote_show_cmdlist
);
1131 /* The command code copies the documentation strings. */
1134 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1139 legacy_name
= xstrprintf ("%s-packet", name
);
1140 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1141 &remote_set_cmdlist
);
1142 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1143 &remote_show_cmdlist
);
1147 static enum packet_result
1148 packet_check_result (const char *buf
)
1152 /* The stub recognized the packet request. Check that the
1153 operation succeeded. */
1155 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1157 /* "Enn" - definitly an error. */
1158 return PACKET_ERROR
;
1160 /* Always treat "E." as an error. This will be used for
1161 more verbose error messages, such as E.memtypes. */
1162 if (buf
[0] == 'E' && buf
[1] == '.')
1163 return PACKET_ERROR
;
1165 /* The packet may or may not be OK. Just assume it is. */
1169 /* The stub does not support the packet. */
1170 return PACKET_UNKNOWN
;
1173 static enum packet_result
1174 packet_ok (const char *buf
, struct packet_config
*config
)
1176 enum packet_result result
;
1178 result
= packet_check_result (buf
);
1183 /* The stub recognized the packet request. */
1184 switch (config
->support
)
1186 case PACKET_SUPPORT_UNKNOWN
:
1188 fprintf_unfiltered (gdb_stdlog
,
1189 "Packet %s (%s) is supported\n",
1190 config
->name
, config
->title
);
1191 config
->support
= PACKET_ENABLE
;
1193 case PACKET_DISABLE
:
1194 internal_error (__FILE__
, __LINE__
,
1195 _("packet_ok: attempt to use a disabled packet"));
1201 case PACKET_UNKNOWN
:
1202 /* The stub does not support the packet. */
1203 switch (config
->support
)
1206 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1207 /* If the stub previously indicated that the packet was
1208 supported then there is a protocol error.. */
1209 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1210 config
->name
, config
->title
);
1212 /* The user set it wrong. */
1213 error (_("Enabled packet %s (%s) not recognized by stub"),
1214 config
->name
, config
->title
);
1216 case PACKET_SUPPORT_UNKNOWN
:
1218 fprintf_unfiltered (gdb_stdlog
,
1219 "Packet %s (%s) is NOT supported\n",
1220 config
->name
, config
->title
);
1221 config
->support
= PACKET_DISABLE
;
1223 case PACKET_DISABLE
:
1245 PACKET_vFile_pwrite
,
1247 PACKET_vFile_unlink
,
1248 PACKET_vFile_readlink
,
1250 PACKET_qXfer_features
,
1251 PACKET_qXfer_libraries
,
1252 PACKET_qXfer_libraries_svr4
,
1253 PACKET_qXfer_memory_map
,
1254 PACKET_qXfer_spu_read
,
1255 PACKET_qXfer_spu_write
,
1256 PACKET_qXfer_osdata
,
1257 PACKET_qXfer_threads
,
1258 PACKET_qXfer_statictrace_read
,
1259 PACKET_qXfer_traceframe_info
,
1264 PACKET_QPassSignals
,
1265 PACKET_QProgramSignals
,
1266 PACKET_qSearch_memory
,
1269 PACKET_QStartNoAckMode
,
1271 PACKET_qXfer_siginfo_read
,
1272 PACKET_qXfer_siginfo_write
,
1274 PACKET_ConditionalTracepoints
,
1275 PACKET_ConditionalBreakpoints
,
1276 PACKET_BreakpointCommands
,
1277 PACKET_FastTracepoints
,
1278 PACKET_StaticTracepoints
,
1279 PACKET_InstallInTrace
,
1282 PACKET_TracepointSource
,
1285 PACKET_QDisableRandomization
,
1290 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1293 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1294 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 update_packet_config (packet
);
1308 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1313 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1314 struct cmd_list_element
*c
,
1317 struct packet_config
*packet
;
1319 for (packet
= remote_protocol_packets
;
1320 packet
< &remote_protocol_packets
[PACKET_MAX
];
1323 if (&packet
->detect
== c
->var
)
1325 show_packet_config_cmd (packet
);
1329 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1333 /* Should we try one of the 'Z' requests? */
1337 Z_PACKET_SOFTWARE_BP
,
1338 Z_PACKET_HARDWARE_BP
,
1345 /* For compatibility with older distributions. Provide a ``set remote
1346 Z-packet ...'' command that updates all the Z packet types. */
1348 static enum auto_boolean remote_Z_packet_detect
;
1351 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1352 struct cmd_list_element
*c
)
1356 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1358 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1359 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1364 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1365 struct cmd_list_element
*c
,
1370 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1372 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1376 /* Should we try the 'ThreadInfo' query packet?
1378 This variable (NOT available to the user: auto-detect only!)
1379 determines whether GDB will use the new, simpler "ThreadInfo"
1380 query or the older, more complex syntax for thread queries.
1381 This is an auto-detect variable (set to true at each connect,
1382 and set to false when the target fails to recognize it). */
1384 static int use_threadinfo_query
;
1385 static int use_threadextra_query
;
1387 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1388 static struct async_signal_handler
*sigint_remote_twice_token
;
1389 static struct async_signal_handler
*sigint_remote_token
;
1392 /* Asynchronous signal handle registered as event loop source for
1393 when we have pending events ready to be passed to the core. */
1395 static struct async_event_handler
*remote_async_inferior_event_token
;
1399 static ptid_t magic_null_ptid
;
1400 static ptid_t not_sent_ptid
;
1401 static ptid_t any_thread_ptid
;
1403 /* These are the threads which we last sent to the remote system. The
1404 TID member will be -1 for all or -2 for not sent yet. */
1406 static ptid_t general_thread
;
1407 static ptid_t continue_thread
;
1409 /* This is the traceframe which we last selected on the remote system.
1410 It will be -1 if no traceframe is selected. */
1411 static int remote_traceframe_number
= -1;
1413 /* Find out if the stub attached to PID (and hence GDB should offer to
1414 detach instead of killing it when bailing out). */
1417 remote_query_attached (int pid
)
1419 struct remote_state
*rs
= get_remote_state ();
1420 size_t size
= get_remote_packet_size ();
1422 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1425 if (remote_multi_process_p (rs
))
1426 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1428 xsnprintf (rs
->buf
, size
, "qAttached");
1431 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1433 switch (packet_ok (rs
->buf
,
1434 &remote_protocol_packets
[PACKET_qAttached
]))
1437 if (strcmp (rs
->buf
, "1") == 0)
1441 warning (_("Remote failure reply: %s"), rs
->buf
);
1443 case PACKET_UNKNOWN
:
1450 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1451 has been invented by GDB, instead of reported by the target. Since
1452 we can be connected to a remote system before before knowing about
1453 any inferior, mark the target with execution when we find the first
1454 inferior. If ATTACHED is 1, then we had just attached to this
1455 inferior. If it is 0, then we just created this inferior. If it
1456 is -1, then try querying the remote stub to find out if it had
1457 attached to the inferior or not. */
1459 static struct inferior
*
1460 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1462 struct inferior
*inf
;
1464 /* Check whether this process we're learning about is to be
1465 considered attached, or if is to be considered to have been
1466 spawned by the stub. */
1468 attached
= remote_query_attached (pid
);
1470 if (gdbarch_has_global_solist (target_gdbarch ()))
1472 /* If the target shares code across all inferiors, then every
1473 attach adds a new inferior. */
1474 inf
= add_inferior (pid
);
1476 /* ... and every inferior is bound to the same program space.
1477 However, each inferior may still have its own address
1479 inf
->aspace
= maybe_new_address_space ();
1480 inf
->pspace
= current_program_space
;
1484 /* In the traditional debugging scenario, there's a 1-1 match
1485 between program/address spaces. We simply bind the inferior
1486 to the program space's address space. */
1487 inf
= current_inferior ();
1488 inferior_appeared (inf
, pid
);
1491 inf
->attach_flag
= attached
;
1492 inf
->fake_pid_p
= fake_pid_p
;
1497 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1498 according to RUNNING. */
1501 remote_add_thread (ptid_t ptid
, int running
)
1505 set_executing (ptid
, running
);
1506 set_running (ptid
, running
);
1509 /* Come here when we learn about a thread id from the remote target.
1510 It may be the first time we hear about such thread, so take the
1511 opportunity to add it to GDB's thread list. In case this is the
1512 first time we're noticing its corresponding inferior, add it to
1513 GDB's inferior list as well. */
1516 remote_notice_new_inferior (ptid_t currthread
, int running
)
1518 /* If this is a new thread, add it to GDB's thread list.
1519 If we leave it up to WFI to do this, bad things will happen. */
1521 if (in_thread_list (currthread
) && is_exited (currthread
))
1523 /* We're seeing an event on a thread id we knew had exited.
1524 This has to be a new thread reusing the old id. Add it. */
1525 remote_add_thread (currthread
, running
);
1529 if (!in_thread_list (currthread
))
1531 struct inferior
*inf
= NULL
;
1532 int pid
= ptid_get_pid (currthread
);
1534 if (ptid_is_pid (inferior_ptid
)
1535 && pid
== ptid_get_pid (inferior_ptid
))
1537 /* inferior_ptid has no thread member yet. This can happen
1538 with the vAttach -> remote_wait,"TAAthread:" path if the
1539 stub doesn't support qC. This is the first stop reported
1540 after an attach, so this is the main thread. Update the
1541 ptid in the thread list. */
1542 if (in_thread_list (pid_to_ptid (pid
)))
1543 thread_change_ptid (inferior_ptid
, currthread
);
1546 remote_add_thread (currthread
, running
);
1547 inferior_ptid
= currthread
;
1552 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1554 /* inferior_ptid is not set yet. This can happen with the
1555 vRun -> remote_wait,"TAAthread:" path if the stub
1556 doesn't support qC. This is the first stop reported
1557 after an attach, so this is the main thread. Update the
1558 ptid in the thread list. */
1559 thread_change_ptid (inferior_ptid
, currthread
);
1563 /* When connecting to a target remote, or to a target
1564 extended-remote which already was debugging an inferior, we
1565 may not know about it yet. Add it before adding its child
1566 thread, so notifications are emitted in a sensible order. */
1567 if (!in_inferior_list (ptid_get_pid (currthread
)))
1569 struct remote_state
*rs
= get_remote_state ();
1570 int fake_pid_p
= !remote_multi_process_p (rs
);
1572 inf
= remote_add_inferior (fake_pid_p
,
1573 ptid_get_pid (currthread
), -1);
1576 /* This is really a new thread. Add it. */
1577 remote_add_thread (currthread
, running
);
1579 /* If we found a new inferior, let the common code do whatever
1580 it needs to with it (e.g., read shared libraries, insert
1583 notice_new_inferior (currthread
, running
, 0);
1587 /* Return the private thread data, creating it if necessary. */
1589 static struct private_thread_info
*
1590 demand_private_info (ptid_t ptid
)
1592 struct thread_info
*info
= find_thread_ptid (ptid
);
1598 info
->private = xmalloc (sizeof (*(info
->private)));
1599 info
->private_dtor
= free_private_thread_info
;
1600 info
->private->core
= -1;
1601 info
->private->extra
= 0;
1604 return info
->private;
1607 /* Call this function as a result of
1608 1) A halt indication (T packet) containing a thread id
1609 2) A direct query of currthread
1610 3) Successful execution of set thread */
1613 record_currthread (ptid_t currthread
)
1615 general_thread
= currthread
;
1618 static char *last_pass_packet
;
1620 /* If 'QPassSignals' is supported, tell the remote stub what signals
1621 it can simply pass through to the inferior without reporting. */
1624 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1626 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1628 char *pass_packet
, *p
;
1631 gdb_assert (numsigs
< 256);
1632 for (i
= 0; i
< numsigs
; i
++)
1634 if (pass_signals
[i
])
1637 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1638 strcpy (pass_packet
, "QPassSignals:");
1639 p
= pass_packet
+ strlen (pass_packet
);
1640 for (i
= 0; i
< numsigs
; i
++)
1642 if (pass_signals
[i
])
1645 *p
++ = tohex (i
>> 4);
1646 *p
++ = tohex (i
& 15);
1655 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1657 struct remote_state
*rs
= get_remote_state ();
1658 char *buf
= rs
->buf
;
1660 putpkt (pass_packet
);
1661 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1662 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1663 if (last_pass_packet
)
1664 xfree (last_pass_packet
);
1665 last_pass_packet
= pass_packet
;
1668 xfree (pass_packet
);
1672 /* The last QProgramSignals packet sent to the target. We bypass
1673 sending a new program signals list down to the target if the new
1674 packet is exactly the same as the last we sent. IOW, we only let
1675 the target know about program signals list changes. */
1677 static char *last_program_signals_packet
;
1679 /* If 'QProgramSignals' is supported, tell the remote stub what
1680 signals it should pass through to the inferior when detaching. */
1683 remote_program_signals (int numsigs
, unsigned char *signals
)
1685 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1690 gdb_assert (numsigs
< 256);
1691 for (i
= 0; i
< numsigs
; i
++)
1696 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1697 strcpy (packet
, "QProgramSignals:");
1698 p
= packet
+ strlen (packet
);
1699 for (i
= 0; i
< numsigs
; i
++)
1701 if (signal_pass_state (i
))
1704 *p
++ = tohex (i
>> 4);
1705 *p
++ = tohex (i
& 15);
1714 if (!last_program_signals_packet
1715 || strcmp (last_program_signals_packet
, packet
) != 0)
1717 struct remote_state
*rs
= get_remote_state ();
1718 char *buf
= rs
->buf
;
1721 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1722 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1723 xfree (last_program_signals_packet
);
1724 last_program_signals_packet
= packet
;
1731 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1732 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1733 thread. If GEN is set, set the general thread, if not, then set
1734 the step/continue thread. */
1736 set_thread (struct ptid ptid
, int gen
)
1738 struct remote_state
*rs
= get_remote_state ();
1739 ptid_t state
= gen
? general_thread
: continue_thread
;
1740 char *buf
= rs
->buf
;
1741 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1743 if (ptid_equal (state
, ptid
))
1747 *buf
++ = gen
? 'g' : 'c';
1748 if (ptid_equal (ptid
, magic_null_ptid
))
1749 xsnprintf (buf
, endbuf
- buf
, "0");
1750 else if (ptid_equal (ptid
, any_thread_ptid
))
1751 xsnprintf (buf
, endbuf
- buf
, "0");
1752 else if (ptid_equal (ptid
, minus_one_ptid
))
1753 xsnprintf (buf
, endbuf
- buf
, "-1");
1755 write_ptid (buf
, endbuf
, ptid
);
1757 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1759 general_thread
= ptid
;
1761 continue_thread
= ptid
;
1765 set_general_thread (struct ptid ptid
)
1767 set_thread (ptid
, 1);
1771 set_continue_thread (struct ptid ptid
)
1773 set_thread (ptid
, 0);
1776 /* Change the remote current process. Which thread within the process
1777 ends up selected isn't important, as long as it is the same process
1778 as what INFERIOR_PTID points to.
1780 This comes from that fact that there is no explicit notion of
1781 "selected process" in the protocol. The selected process for
1782 general operations is the process the selected general thread
1786 set_general_process (void)
1788 struct remote_state
*rs
= get_remote_state ();
1790 /* If the remote can't handle multiple processes, don't bother. */
1791 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1794 /* We only need to change the remote current thread if it's pointing
1795 at some other process. */
1796 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1797 set_general_thread (inferior_ptid
);
1801 /* Return nonzero if the thread PTID is still alive on the remote
1805 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1807 struct remote_state
*rs
= get_remote_state ();
1810 if (ptid_equal (ptid
, magic_null_ptid
))
1811 /* The main thread is always alive. */
1814 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1815 /* The main thread is always alive. This can happen after a
1816 vAttach, if the remote side doesn't support
1821 endp
= rs
->buf
+ get_remote_packet_size ();
1824 write_ptid (p
, endp
, ptid
);
1827 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1828 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1831 /* About these extended threadlist and threadinfo packets. They are
1832 variable length packets but, the fields within them are often fixed
1833 length. They are redundent enough to send over UDP as is the
1834 remote protocol in general. There is a matching unit test module
1837 #define OPAQUETHREADBYTES 8
1839 /* a 64 bit opaque identifier */
1840 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1842 /* WARNING: This threadref data structure comes from the remote O.S.,
1843 libstub protocol encoding, and remote.c. It is not particularly
1846 /* Right now, the internal structure is int. We want it to be bigger.
1847 Plan to fix this. */
1849 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1851 /* gdb_ext_thread_info is an internal GDB data structure which is
1852 equivalent to the reply of the remote threadinfo packet. */
1854 struct gdb_ext_thread_info
1856 threadref threadid
; /* External form of thread reference. */
1857 int active
; /* Has state interesting to GDB?
1859 char display
[256]; /* Brief state display, name,
1860 blocked/suspended. */
1861 char shortname
[32]; /* To be used to name threads. */
1862 char more_display
[256]; /* Long info, statistics, queue depth,
1866 /* The volume of remote transfers can be limited by submitting
1867 a mask containing bits specifying the desired information.
1868 Use a union of these values as the 'selection' parameter to
1869 get_thread_info. FIXME: Make these TAG names more thread specific. */
1871 #define TAG_THREADID 1
1872 #define TAG_EXISTS 2
1873 #define TAG_DISPLAY 4
1874 #define TAG_THREADNAME 8
1875 #define TAG_MOREDISPLAY 16
1877 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1879 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1881 static char *unpack_nibble (char *buf
, int *val
);
1883 static char *pack_nibble (char *buf
, int nibble
);
1885 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1887 static char *unpack_byte (char *buf
, int *value
);
1889 static char *pack_int (char *buf
, int value
);
1891 static char *unpack_int (char *buf
, int *value
);
1893 static char *unpack_string (char *src
, char *dest
, int length
);
1895 static char *pack_threadid (char *pkt
, threadref
*id
);
1897 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1899 void int_to_threadref (threadref
*id
, int value
);
1901 static int threadref_to_int (threadref
*ref
);
1903 static void copy_threadref (threadref
*dest
, threadref
*src
);
1905 static int threadmatch (threadref
*dest
, threadref
*src
);
1907 static char *pack_threadinfo_request (char *pkt
, int mode
,
1910 static int remote_unpack_thread_info_response (char *pkt
,
1911 threadref
*expectedref
,
1912 struct gdb_ext_thread_info
1916 static int remote_get_threadinfo (threadref
*threadid
,
1917 int fieldset
, /*TAG mask */
1918 struct gdb_ext_thread_info
*info
);
1920 static char *pack_threadlist_request (char *pkt
, int startflag
,
1922 threadref
*nextthread
);
1924 static int parse_threadlist_response (char *pkt
,
1926 threadref
*original_echo
,
1927 threadref
*resultlist
,
1930 static int remote_get_threadlist (int startflag
,
1931 threadref
*nextthread
,
1935 threadref
*threadlist
);
1937 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1939 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1940 void *context
, int looplimit
);
1942 static int remote_newthread_step (threadref
*ref
, void *context
);
1945 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1946 buffer we're allowed to write to. Returns
1947 BUF+CHARACTERS_WRITTEN. */
1950 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1953 struct remote_state
*rs
= get_remote_state ();
1955 if (remote_multi_process_p (rs
))
1957 pid
= ptid_get_pid (ptid
);
1959 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1961 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1963 tid
= ptid_get_tid (ptid
);
1965 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1967 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1972 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1973 passed the last parsed char. Returns null_ptid on error. */
1976 read_ptid (char *buf
, char **obuf
)
1980 ULONGEST pid
= 0, tid
= 0;
1984 /* Multi-process ptid. */
1985 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1987 error (_("invalid remote ptid: %s"), p
);
1990 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1993 return ptid_build (pid
, 0, tid
);
1996 /* No multi-process. Just a tid. */
1997 pp
= unpack_varlen_hex (p
, &tid
);
1999 /* Since the stub is not sending a process id, then default to
2000 what's in inferior_ptid, unless it's null at this point. If so,
2001 then since there's no way to know the pid of the reported
2002 threads, use the magic number. */
2003 if (ptid_equal (inferior_ptid
, null_ptid
))
2004 pid
= ptid_get_pid (magic_null_ptid
);
2006 pid
= ptid_get_pid (inferior_ptid
);
2010 return ptid_build (pid
, 0, tid
);
2013 /* Encode 64 bits in 16 chars of hex. */
2015 static const char hexchars
[] = "0123456789abcdef";
2018 ishex (int ch
, int *val
)
2020 if ((ch
>= 'a') && (ch
<= 'f'))
2022 *val
= ch
- 'a' + 10;
2025 if ((ch
>= 'A') && (ch
<= 'F'))
2027 *val
= ch
- 'A' + 10;
2030 if ((ch
>= '0') && (ch
<= '9'))
2041 if (ch
>= 'a' && ch
<= 'f')
2042 return ch
- 'a' + 10;
2043 if (ch
>= '0' && ch
<= '9')
2045 if (ch
>= 'A' && ch
<= 'F')
2046 return ch
- 'A' + 10;
2051 stub_unpack_int (char *buff
, int fieldlength
)
2058 nibble
= stubhex (*buff
++);
2062 retval
= retval
<< 4;
2068 unpack_varlen_hex (char *buff
, /* packet to parse */
2072 ULONGEST retval
= 0;
2074 while (ishex (*buff
, &nibble
))
2077 retval
= retval
<< 4;
2078 retval
|= nibble
& 0x0f;
2085 unpack_nibble (char *buf
, int *val
)
2087 *val
= fromhex (*buf
++);
2092 pack_nibble (char *buf
, int nibble
)
2094 *buf
++ = hexchars
[(nibble
& 0x0f)];
2099 pack_hex_byte (char *pkt
, int byte
)
2101 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2102 *pkt
++ = hexchars
[(byte
& 0xf)];
2107 unpack_byte (char *buf
, int *value
)
2109 *value
= stub_unpack_int (buf
, 2);
2114 pack_int (char *buf
, int value
)
2116 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2117 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2118 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2119 buf
= pack_hex_byte (buf
, (value
& 0xff));
2124 unpack_int (char *buf
, int *value
)
2126 *value
= stub_unpack_int (buf
, 8);
2130 #if 0 /* Currently unused, uncomment when needed. */
2131 static char *pack_string (char *pkt
, char *string
);
2134 pack_string (char *pkt
, char *string
)
2139 len
= strlen (string
);
2141 len
= 200; /* Bigger than most GDB packets, junk??? */
2142 pkt
= pack_hex_byte (pkt
, len
);
2146 if ((ch
== '\0') || (ch
== '#'))
2147 ch
= '*'; /* Protect encapsulation. */
2152 #endif /* 0 (unused) */
2155 unpack_string (char *src
, char *dest
, int length
)
2164 pack_threadid (char *pkt
, threadref
*id
)
2167 unsigned char *altid
;
2169 altid
= (unsigned char *) id
;
2170 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2172 pkt
= pack_hex_byte (pkt
, *altid
++);
2178 unpack_threadid (char *inbuf
, threadref
*id
)
2181 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2184 altref
= (char *) id
;
2186 while (inbuf
< limit
)
2188 x
= stubhex (*inbuf
++);
2189 y
= stubhex (*inbuf
++);
2190 *altref
++ = (x
<< 4) | y
;
2195 /* Externally, threadrefs are 64 bits but internally, they are still
2196 ints. This is due to a mismatch of specifications. We would like
2197 to use 64bit thread references internally. This is an adapter
2201 int_to_threadref (threadref
*id
, int value
)
2203 unsigned char *scan
;
2205 scan
= (unsigned char *) id
;
2211 *scan
++ = (value
>> 24) & 0xff;
2212 *scan
++ = (value
>> 16) & 0xff;
2213 *scan
++ = (value
>> 8) & 0xff;
2214 *scan
++ = (value
& 0xff);
2218 threadref_to_int (threadref
*ref
)
2221 unsigned char *scan
;
2227 value
= (value
<< 8) | ((*scan
++) & 0xff);
2232 copy_threadref (threadref
*dest
, threadref
*src
)
2235 unsigned char *csrc
, *cdest
;
2237 csrc
= (unsigned char *) src
;
2238 cdest
= (unsigned char *) dest
;
2245 threadmatch (threadref
*dest
, threadref
*src
)
2247 /* Things are broken right now, so just assume we got a match. */
2249 unsigned char *srcp
, *destp
;
2251 srcp
= (char *) src
;
2252 destp
= (char *) dest
;
2256 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2263 threadid:1, # always request threadid
2270 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2273 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2275 *pkt
++ = 'q'; /* Info Query */
2276 *pkt
++ = 'P'; /* process or thread info */
2277 pkt
= pack_int (pkt
, mode
); /* mode */
2278 pkt
= pack_threadid (pkt
, id
); /* threadid */
2279 *pkt
= '\0'; /* terminate */
2283 /* These values tag the fields in a thread info response packet. */
2284 /* Tagging the fields allows us to request specific fields and to
2285 add more fields as time goes by. */
2287 #define TAG_THREADID 1 /* Echo the thread identifier. */
2288 #define TAG_EXISTS 2 /* Is this process defined enough to
2289 fetch registers and its stack? */
2290 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2291 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2292 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2296 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2297 struct gdb_ext_thread_info
*info
)
2299 struct remote_state
*rs
= get_remote_state ();
2303 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2306 /* info->threadid = 0; FIXME: implement zero_threadref. */
2308 info
->display
[0] = '\0';
2309 info
->shortname
[0] = '\0';
2310 info
->more_display
[0] = '\0';
2312 /* Assume the characters indicating the packet type have been
2314 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2315 pkt
= unpack_threadid (pkt
, &ref
);
2318 warning (_("Incomplete response to threadinfo request."));
2319 if (!threadmatch (&ref
, expectedref
))
2320 { /* This is an answer to a different request. */
2321 warning (_("ERROR RMT Thread info mismatch."));
2324 copy_threadref (&info
->threadid
, &ref
);
2326 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2328 /* Packets are terminated with nulls. */
2329 while ((pkt
< limit
) && mask
&& *pkt
)
2331 pkt
= unpack_int (pkt
, &tag
); /* tag */
2332 pkt
= unpack_byte (pkt
, &length
); /* length */
2333 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2335 warning (_("ERROR RMT: threadinfo tag mismatch."));
2339 if (tag
== TAG_THREADID
)
2343 warning (_("ERROR RMT: length of threadid is not 16."));
2347 pkt
= unpack_threadid (pkt
, &ref
);
2348 mask
= mask
& ~TAG_THREADID
;
2351 if (tag
== TAG_EXISTS
)
2353 info
->active
= stub_unpack_int (pkt
, length
);
2355 mask
= mask
& ~(TAG_EXISTS
);
2358 warning (_("ERROR RMT: 'exists' length too long."));
2364 if (tag
== TAG_THREADNAME
)
2366 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2367 mask
= mask
& ~TAG_THREADNAME
;
2370 if (tag
== TAG_DISPLAY
)
2372 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2373 mask
= mask
& ~TAG_DISPLAY
;
2376 if (tag
== TAG_MOREDISPLAY
)
2378 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2379 mask
= mask
& ~TAG_MOREDISPLAY
;
2382 warning (_("ERROR RMT: unknown thread info tag."));
2383 break; /* Not a tag we know about. */
2389 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2390 struct gdb_ext_thread_info
*info
)
2392 struct remote_state
*rs
= get_remote_state ();
2395 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2399 if (rs
->buf
[0] == '\0')
2402 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2407 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2410 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2411 threadref
*nextthread
)
2413 *pkt
++ = 'q'; /* info query packet */
2414 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2415 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2416 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2417 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2422 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2425 parse_threadlist_response (char *pkt
, int result_limit
,
2426 threadref
*original_echo
, threadref
*resultlist
,
2429 struct remote_state
*rs
= get_remote_state ();
2431 int count
, resultcount
, done
;
2434 /* Assume the 'q' and 'M chars have been stripped. */
2435 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2436 /* done parse past here */
2437 pkt
= unpack_byte (pkt
, &count
); /* count field */
2438 pkt
= unpack_nibble (pkt
, &done
);
2439 /* The first threadid is the argument threadid. */
2440 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2441 while ((count
-- > 0) && (pkt
< limit
))
2443 pkt
= unpack_threadid (pkt
, resultlist
++);
2444 if (resultcount
++ >= result_limit
)
2453 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2454 int *done
, int *result_count
, threadref
*threadlist
)
2456 struct remote_state
*rs
= get_remote_state ();
2457 static threadref echo_nextthread
;
2460 /* Trancate result limit to be smaller than the packet size. */
2461 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2462 >= get_remote_packet_size ())
2463 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2465 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2469 if (*rs
->buf
== '\0')
2473 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2476 if (!threadmatch (&echo_nextthread
, nextthread
))
2478 /* FIXME: This is a good reason to drop the packet. */
2479 /* Possably, there is a duplicate response. */
2481 retransmit immediatly - race conditions
2482 retransmit after timeout - yes
2484 wait for packet, then exit
2486 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2487 return 0; /* I choose simply exiting. */
2489 if (*result_count
<= 0)
2493 warning (_("RMT ERROR : failed to get remote thread list."));
2496 return result
; /* break; */
2498 if (*result_count
> result_limit
)
2501 warning (_("RMT ERROR: threadlist response longer than requested."));
2507 /* This is the interface between remote and threads, remotes upper
2510 /* remote_find_new_threads retrieves the thread list and for each
2511 thread in the list, looks up the thread in GDB's internal list,
2512 adding the thread if it does not already exist. This involves
2513 getting partial thread lists from the remote target so, polling the
2514 quit_flag is required. */
2517 /* About this many threadisds fit in a packet. */
2519 #define MAXTHREADLISTRESULTS 32
2522 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2525 int done
, i
, result_count
;
2529 static threadref nextthread
;
2530 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2535 if (loopcount
++ > looplimit
)
2538 warning (_("Remote fetch threadlist -infinite loop-."));
2541 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2542 &done
, &result_count
, resultthreadlist
))
2547 /* Clear for later iterations. */
2549 /* Setup to resume next batch of thread references, set nextthread. */
2550 if (result_count
>= 1)
2551 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2553 while (result_count
--)
2554 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2561 remote_newthread_step (threadref
*ref
, void *context
)
2563 int pid
= ptid_get_pid (inferior_ptid
);
2564 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2566 if (!in_thread_list (ptid
))
2568 return 1; /* continue iterator */
2571 #define CRAZY_MAX_THREADS 1000
2574 remote_current_thread (ptid_t oldpid
)
2576 struct remote_state
*rs
= get_remote_state ();
2579 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2580 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2581 return read_ptid (&rs
->buf
[2], NULL
);
2586 /* Find new threads for info threads command.
2587 * Original version, using John Metzler's thread protocol.
2591 remote_find_new_threads (void)
2593 remote_threadlist_iterator (remote_newthread_step
, 0,
2597 #if defined(HAVE_LIBEXPAT)
2599 typedef struct thread_item
2605 DEF_VEC_O(thread_item_t
);
2607 struct threads_parsing_context
2609 VEC (thread_item_t
) *items
;
2613 start_thread (struct gdb_xml_parser
*parser
,
2614 const struct gdb_xml_element
*element
,
2615 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2617 struct threads_parsing_context
*data
= user_data
;
2619 struct thread_item item
;
2621 struct gdb_xml_value
*attr
;
2623 id
= xml_find_attribute (attributes
, "id")->value
;
2624 item
.ptid
= read_ptid (id
, NULL
);
2626 attr
= xml_find_attribute (attributes
, "core");
2628 item
.core
= *(ULONGEST
*) attr
->value
;
2634 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2638 end_thread (struct gdb_xml_parser
*parser
,
2639 const struct gdb_xml_element
*element
,
2640 void *user_data
, const char *body_text
)
2642 struct threads_parsing_context
*data
= user_data
;
2644 if (body_text
&& *body_text
)
2645 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2648 const struct gdb_xml_attribute thread_attributes
[] = {
2649 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2650 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2651 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2654 const struct gdb_xml_element thread_children
[] = {
2655 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2658 const struct gdb_xml_element threads_children
[] = {
2659 { "thread", thread_attributes
, thread_children
,
2660 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2661 start_thread
, end_thread
},
2662 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2665 const struct gdb_xml_element threads_elements
[] = {
2666 { "threads", NULL
, threads_children
,
2667 GDB_XML_EF_NONE
, NULL
, NULL
},
2668 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2671 /* Discard the contents of the constructed thread info context. */
2674 clear_threads_parsing_context (void *p
)
2676 struct threads_parsing_context
*context
= p
;
2678 struct thread_item
*item
;
2680 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2681 xfree (item
->extra
);
2683 VEC_free (thread_item_t
, context
->items
);
2689 * Find all threads for info threads command.
2690 * Uses new thread protocol contributed by Cisco.
2691 * Falls back and attempts to use the older method (above)
2692 * if the target doesn't respond to the new method.
2696 remote_threads_info (struct target_ops
*ops
)
2698 struct remote_state
*rs
= get_remote_state ();
2702 if (remote_desc
== 0) /* paranoia */
2703 error (_("Command can only be used when connected to the remote target."));
2705 #if defined(HAVE_LIBEXPAT)
2706 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2708 char *xml
= target_read_stralloc (¤t_target
,
2709 TARGET_OBJECT_THREADS
, NULL
);
2711 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2715 struct threads_parsing_context context
;
2717 context
.items
= NULL
;
2718 make_cleanup (clear_threads_parsing_context
, &context
);
2720 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2721 threads_elements
, xml
, &context
) == 0)
2724 struct thread_item
*item
;
2727 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2730 if (!ptid_equal (item
->ptid
, null_ptid
))
2732 struct private_thread_info
*info
;
2733 /* In non-stop mode, we assume new found threads
2734 are running until proven otherwise with a
2735 stop reply. In all-stop, we can only get
2736 here if all threads are stopped. */
2737 int running
= non_stop
? 1 : 0;
2739 remote_notice_new_inferior (item
->ptid
, running
);
2741 info
= demand_private_info (item
->ptid
);
2742 info
->core
= item
->core
;
2743 info
->extra
= item
->extra
;
2750 do_cleanups (back_to
);
2755 if (use_threadinfo_query
)
2757 putpkt ("qfThreadInfo");
2758 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2760 if (bufp
[0] != '\0') /* q packet recognized */
2762 struct cleanup
*old_chain
;
2765 /* remote_notice_new_inferior (in the loop below) may make
2766 new RSP calls, which clobber rs->buf. Work with a
2768 bufp
= saved_reply
= xstrdup (rs
->buf
);
2769 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2771 while (*bufp
++ == 'm') /* reply contains one or more TID */
2775 new_thread
= read_ptid (bufp
, &bufp
);
2776 if (!ptid_equal (new_thread
, null_ptid
))
2778 /* In non-stop mode, we assume new found threads
2779 are running until proven otherwise with a
2780 stop reply. In all-stop, we can only get
2781 here if all threads are stopped. */
2782 int running
= non_stop
? 1 : 0;
2784 remote_notice_new_inferior (new_thread
, running
);
2787 while (*bufp
++ == ','); /* comma-separated list */
2788 free_current_contents (&saved_reply
);
2789 putpkt ("qsThreadInfo");
2790 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2791 bufp
= saved_reply
= xstrdup (rs
->buf
);
2793 do_cleanups (old_chain
);
2798 /* Only qfThreadInfo is supported in non-stop mode. */
2802 /* Else fall back to old method based on jmetzler protocol. */
2803 use_threadinfo_query
= 0;
2804 remote_find_new_threads ();
2809 * Collect a descriptive string about the given thread.
2810 * The target may say anything it wants to about the thread
2811 * (typically info about its blocked / runnable state, name, etc.).
2812 * This string will appear in the info threads display.
2814 * Optional: targets are not required to implement this function.
2818 remote_threads_extra_info (struct thread_info
*tp
)
2820 struct remote_state
*rs
= get_remote_state ();
2824 struct gdb_ext_thread_info threadinfo
;
2825 static char display_buf
[100]; /* arbitrary... */
2826 int n
= 0; /* position in display_buf */
2828 if (remote_desc
== 0) /* paranoia */
2829 internal_error (__FILE__
, __LINE__
,
2830 _("remote_threads_extra_info"));
2832 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2833 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2834 /* This is the main thread which was added by GDB. The remote
2835 server doesn't know about it. */
2838 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2840 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2842 if (info
&& info
->private)
2843 return info
->private->extra
;
2848 if (use_threadextra_query
)
2851 char *endb
= rs
->buf
+ get_remote_packet_size ();
2853 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2855 write_ptid (b
, endb
, tp
->ptid
);
2858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2859 if (rs
->buf
[0] != 0)
2861 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2862 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2863 display_buf
[result
] = '\0';
2868 /* If the above query fails, fall back to the old method. */
2869 use_threadextra_query
= 0;
2870 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2871 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2872 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2873 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2874 if (threadinfo
.active
)
2876 if (*threadinfo
.shortname
)
2877 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2878 " Name: %s,", threadinfo
.shortname
);
2879 if (*threadinfo
.display
)
2880 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2881 " State: %s,", threadinfo
.display
);
2882 if (*threadinfo
.more_display
)
2883 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2884 " Priority: %s", threadinfo
.more_display
);
2888 /* For purely cosmetic reasons, clear up trailing commas. */
2889 if (',' == display_buf
[n
-1])
2890 display_buf
[n
-1] = ' ';
2899 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2900 struct static_tracepoint_marker
*marker
)
2902 struct remote_state
*rs
= get_remote_state ();
2905 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2907 p
+= hexnumstr (p
, addr
);
2909 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2913 error (_("Remote failure reply: %s"), p
);
2917 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2924 static VEC(static_tracepoint_marker_p
) *
2925 remote_static_tracepoint_markers_by_strid (const char *strid
)
2927 struct remote_state
*rs
= get_remote_state ();
2928 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2929 struct static_tracepoint_marker
*marker
= NULL
;
2930 struct cleanup
*old_chain
;
2933 /* Ask for a first packet of static tracepoint marker
2936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2939 error (_("Remote failure reply: %s"), p
);
2941 old_chain
= make_cleanup (free_current_marker
, &marker
);
2946 marker
= XCNEW (struct static_tracepoint_marker
);
2950 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2952 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2954 VEC_safe_push (static_tracepoint_marker_p
,
2960 release_static_tracepoint_marker (marker
);
2961 memset (marker
, 0, sizeof (*marker
));
2964 while (*p
++ == ','); /* comma-separated list */
2965 /* Ask for another packet of static tracepoint definition. */
2967 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2971 do_cleanups (old_chain
);
2976 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2979 remote_get_ada_task_ptid (long lwp
, long thread
)
2981 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2985 /* Restart the remote side; this is an extended protocol operation. */
2988 extended_remote_restart (void)
2990 struct remote_state
*rs
= get_remote_state ();
2992 /* Send the restart command; for reasons I don't understand the
2993 remote side really expects a number after the "R". */
2994 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2997 remote_fileio_reset ();
3000 /* Clean up connection to a remote debugger. */
3003 remote_close (int quitting
)
3005 if (remote_desc
== NULL
)
3006 return; /* already closed */
3008 /* Make sure we leave stdin registered in the event loop, and we
3009 don't leave the async SIGINT signal handler installed. */
3010 remote_terminal_ours ();
3012 serial_close (remote_desc
);
3015 /* We don't have a connection to the remote stub anymore. Get rid
3016 of all the inferiors and their threads we were controlling.
3017 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3018 will be unable to find the thread corresponding to (pid, 0, 0). */
3019 inferior_ptid
= null_ptid
;
3020 discard_all_inferiors ();
3022 /* Stop replies may from inferiors which are still unknown to GDB.
3023 We are closing the remote target, so we should discard
3024 everything, including the stop replies from GDB-unknown
3026 discard_pending_stop_replies (NULL
);
3028 if (remote_async_inferior_event_token
)
3029 delete_async_event_handler (&remote_async_inferior_event_token
);
3031 remote_notif_unregister_async_event_handler ();
3034 /* Query the remote side for the text, data and bss offsets. */
3039 struct remote_state
*rs
= get_remote_state ();
3042 int lose
, num_segments
= 0, do_sections
, do_segments
;
3043 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3044 struct section_offsets
*offs
;
3045 struct symfile_segment_data
*data
;
3047 if (symfile_objfile
== NULL
)
3050 putpkt ("qOffsets");
3051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3054 if (buf
[0] == '\000')
3055 return; /* Return silently. Stub doesn't support
3059 warning (_("Remote failure reply: %s"), buf
);
3063 /* Pick up each field in turn. This used to be done with scanf, but
3064 scanf will make trouble if CORE_ADDR size doesn't match
3065 conversion directives correctly. The following code will work
3066 with any size of CORE_ADDR. */
3067 text_addr
= data_addr
= bss_addr
= 0;
3071 if (strncmp (ptr
, "Text=", 5) == 0)
3074 /* Don't use strtol, could lose on big values. */
3075 while (*ptr
&& *ptr
!= ';')
3076 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3078 if (strncmp (ptr
, ";Data=", 6) == 0)
3081 while (*ptr
&& *ptr
!= ';')
3082 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3087 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3090 while (*ptr
&& *ptr
!= ';')
3091 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3093 if (bss_addr
!= data_addr
)
3094 warning (_("Target reported unsupported offsets: %s"), buf
);
3099 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3102 /* Don't use strtol, could lose on big values. */
3103 while (*ptr
&& *ptr
!= ';')
3104 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3107 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3110 while (*ptr
&& *ptr
!= ';')
3111 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3119 error (_("Malformed response to offset query, %s"), buf
);
3120 else if (*ptr
!= '\0')
3121 warning (_("Target reported unsupported offsets: %s"), buf
);
3123 offs
= ((struct section_offsets
*)
3124 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3125 memcpy (offs
, symfile_objfile
->section_offsets
,
3126 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3128 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3129 do_segments
= (data
!= NULL
);
3130 do_sections
= num_segments
== 0;
3132 if (num_segments
> 0)
3134 segments
[0] = text_addr
;
3135 segments
[1] = data_addr
;
3137 /* If we have two segments, we can still try to relocate everything
3138 by assuming that the .text and .data offsets apply to the whole
3139 text and data segments. Convert the offsets given in the packet
3140 to base addresses for symfile_map_offsets_to_segments. */
3141 else if (data
&& data
->num_segments
== 2)
3143 segments
[0] = data
->segment_bases
[0] + text_addr
;
3144 segments
[1] = data
->segment_bases
[1] + data_addr
;
3147 /* If the object file has only one segment, assume that it is text
3148 rather than data; main programs with no writable data are rare,
3149 but programs with no code are useless. Of course the code might
3150 have ended up in the data segment... to detect that we would need
3151 the permissions here. */
3152 else if (data
&& data
->num_segments
== 1)
3154 segments
[0] = data
->segment_bases
[0] + text_addr
;
3157 /* There's no way to relocate by segment. */
3163 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3164 offs
, num_segments
, segments
);
3166 if (ret
== 0 && !do_sections
)
3167 error (_("Can not handle qOffsets TextSeg "
3168 "response with this symbol file"));
3175 free_symfile_segment_data (data
);
3179 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3181 /* This is a temporary kludge to force data and bss to use the
3182 same offsets because that's what nlmconv does now. The real
3183 solution requires changes to the stub and remote.c that I
3184 don't have time to do right now. */
3186 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3187 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3190 objfile_relocate (symfile_objfile
, offs
);
3193 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3194 threads we know are stopped already. This is used during the
3195 initial remote connection in non-stop mode --- threads that are
3196 reported as already being stopped are left stopped. */
3199 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3201 /* If we have a stop reply for this thread, it must be stopped. */
3202 if (peek_stop_reply (thread
->ptid
))
3203 set_stop_requested (thread
->ptid
, 1);
3208 /* Send interrupt_sequence to remote target. */
3210 send_interrupt_sequence (void)
3212 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3213 serial_write (remote_desc
, "\x03", 1);
3214 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3215 serial_send_break (remote_desc
);
3216 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3218 serial_send_break (remote_desc
);
3219 serial_write (remote_desc
, "g", 1);
3222 internal_error (__FILE__
, __LINE__
,
3223 _("Invalid value for interrupt_sequence_mode: %s."),
3224 interrupt_sequence_mode
);
3228 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3229 and extract the PTID. Returns NULL_PTID if not found. */
3232 stop_reply_extract_thread (char *stop_reply
)
3234 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3238 /* Txx r:val ; r:val (...) */
3241 /* Look for "register" named "thread". */
3246 p1
= strchr (p
, ':');
3250 if (strncmp (p
, "thread", p1
- p
) == 0)
3251 return read_ptid (++p1
, &p
);
3253 p1
= strchr (p
, ';');
3265 /* Query the remote target for which is the current thread/process,
3266 add it to our tables, and update INFERIOR_PTID. The caller is
3267 responsible for setting the state such that the remote end is ready
3268 to return the current thread.
3270 This function is called after handling the '?' or 'vRun' packets,
3271 whose response is a stop reply from which we can also try
3272 extracting the thread. If the target doesn't support the explicit
3273 qC query, we infer the current thread from that stop reply, passed
3274 in in WAIT_STATUS, which may be NULL. */
3277 add_current_inferior_and_thread (char *wait_status
)
3279 struct remote_state
*rs
= get_remote_state ();
3281 ptid_t ptid
= null_ptid
;
3283 inferior_ptid
= null_ptid
;
3285 /* Now, if we have thread information, update inferior_ptid. First
3286 if we have a stop reply handy, maybe it's a T stop reply with a
3287 "thread" register we can extract the current thread from. If
3288 not, ask the remote which is the current thread, with qC. The
3289 former method avoids a roundtrip. Note we don't use
3290 remote_parse_stop_reply as that makes use of the target
3291 architecture, which we haven't yet fully determined at this
3293 if (wait_status
!= NULL
)
3294 ptid
= stop_reply_extract_thread (wait_status
);
3295 if (ptid_equal (ptid
, null_ptid
))
3296 ptid
= remote_current_thread (inferior_ptid
);
3298 if (!ptid_equal (ptid
, null_ptid
))
3300 if (!remote_multi_process_p (rs
))
3303 inferior_ptid
= ptid
;
3307 /* Without this, some commands which require an active target
3308 (such as kill) won't work. This variable serves (at least)
3309 double duty as both the pid of the target process (if it has
3310 such), and as a flag indicating that a target is active. */
3311 inferior_ptid
= magic_null_ptid
;
3315 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3317 /* Add the main thread. */
3318 add_thread_silent (inferior_ptid
);
3322 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3324 struct remote_state
*rs
= get_remote_state ();
3325 struct packet_config
*noack_config
;
3326 char *wait_status
= NULL
;
3328 immediate_quit
++; /* Allow user to interrupt it. */
3331 if (interrupt_on_connect
)
3332 send_interrupt_sequence ();
3334 /* Ack any packet which the remote side has already sent. */
3335 serial_write (remote_desc
, "+", 1);
3337 /* Signal other parts that we're going through the initial setup,
3338 and so things may not be stable yet. */
3339 rs
->starting_up
= 1;
3341 /* The first packet we send to the target is the optional "supported
3342 packets" request. If the target can answer this, it will tell us
3343 which later probes to skip. */
3344 remote_query_supported ();
3346 /* If the stub wants to get a QAllow, compose one and send it. */
3347 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3348 remote_set_permissions ();
3350 /* Next, we possibly activate noack mode.
3352 If the QStartNoAckMode packet configuration is set to AUTO,
3353 enable noack mode if the stub reported a wish for it with
3356 If set to TRUE, then enable noack mode even if the stub didn't
3357 report it in qSupported. If the stub doesn't reply OK, the
3358 session ends with an error.
3360 If FALSE, then don't activate noack mode, regardless of what the
3361 stub claimed should be the default with qSupported. */
3363 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3365 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3366 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3367 && noack_config
->support
== PACKET_ENABLE
))
3369 putpkt ("QStartNoAckMode");
3370 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3371 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3377 /* Tell the remote that we are using the extended protocol. */
3379 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3382 /* Let the target know which signals it is allowed to pass down to
3384 update_signals_program_target ();
3386 /* Next, if the target can specify a description, read it. We do
3387 this before anything involving memory or registers. */
3388 target_find_description ();
3390 /* Next, now that we know something about the target, update the
3391 address spaces in the program spaces. */
3392 update_address_spaces ();
3394 /* On OSs where the list of libraries is global to all
3395 processes, we fetch them early. */
3396 if (gdbarch_has_global_solist (target_gdbarch ()))
3397 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3401 if (!rs
->non_stop_aware
)
3402 error (_("Non-stop mode requested, but remote "
3403 "does not support non-stop"));
3405 putpkt ("QNonStop:1");
3406 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3408 if (strcmp (rs
->buf
, "OK") != 0)
3409 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3411 /* Find about threads and processes the stub is already
3412 controlling. We default to adding them in the running state.
3413 The '?' query below will then tell us about which threads are
3415 remote_threads_info (target
);
3417 else if (rs
->non_stop_aware
)
3419 /* Don't assume that the stub can operate in all-stop mode.
3420 Request it explicitly. */
3421 putpkt ("QNonStop:0");
3422 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3424 if (strcmp (rs
->buf
, "OK") != 0)
3425 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3428 /* Check whether the target is running now. */
3430 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3436 struct inferior
*inf
;
3438 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3441 error (_("The target is not running (try extended-remote?)"));
3443 /* We're connected, but not running. Drop out before we
3444 call start_remote. */
3445 rs
->starting_up
= 0;
3450 /* Save the reply for later. */
3451 wait_status
= alloca (strlen (rs
->buf
) + 1);
3452 strcpy (wait_status
, rs
->buf
);
3455 /* Let the stub know that we want it to return the thread. */
3456 set_continue_thread (minus_one_ptid
);
3458 add_current_inferior_and_thread (wait_status
);
3460 /* init_wait_for_inferior should be called before get_offsets in order
3461 to manage `inserted' flag in bp loc in a correct state.
3462 breakpoint_init_inferior, called from init_wait_for_inferior, set
3463 `inserted' flag to 0, while before breakpoint_re_set, called from
3464 start_remote, set `inserted' flag to 1. In the initialization of
3465 inferior, breakpoint_init_inferior should be called first, and then
3466 breakpoint_re_set can be called. If this order is broken, state of
3467 `inserted' flag is wrong, and cause some problems on breakpoint
3469 init_wait_for_inferior ();
3471 get_offsets (); /* Get text, data & bss offsets. */
3473 /* If we could not find a description using qXfer, and we know
3474 how to do it some other way, try again. This is not
3475 supported for non-stop; it could be, but it is tricky if
3476 there are no stopped threads when we connect. */
3477 if (remote_read_description_p (target
)
3478 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3480 target_clear_description ();
3481 target_find_description ();
3484 /* Use the previously fetched status. */
3485 gdb_assert (wait_status
!= NULL
);
3486 strcpy (rs
->buf
, wait_status
);
3487 rs
->cached_wait_status
= 1;
3490 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3494 /* Clear WFI global state. Do this before finding about new
3495 threads and inferiors, and setting the current inferior.
3496 Otherwise we would clear the proceed status of the current
3497 inferior when we want its stop_soon state to be preserved
3498 (see notice_new_inferior). */
3499 init_wait_for_inferior ();
3501 /* In non-stop, we will either get an "OK", meaning that there
3502 are no stopped threads at this time; or, a regular stop
3503 reply. In the latter case, there may be more than one thread
3504 stopped --- we pull them all out using the vStopped
3506 if (strcmp (rs
->buf
, "OK") != 0)
3508 struct notif_client
*notif
= ¬if_client_stop
;
3510 /* remote_notif_get_pending_replies acks this one, and gets
3512 notif_client_stop
.pending_event
3513 = remote_notif_parse (notif
, rs
->buf
);
3514 remote_notif_get_pending_events (notif
);
3516 /* Make sure that threads that were stopped remain
3518 iterate_over_threads (set_stop_requested_callback
, NULL
);
3521 if (target_can_async_p ())
3522 target_async (inferior_event_handler
, 0);
3524 if (thread_count () == 0)
3527 error (_("The target is not running (try extended-remote?)"));
3529 /* We're connected, but not running. Drop out before we
3530 call start_remote. */
3531 rs
->starting_up
= 0;
3535 /* Let the stub know that we want it to return the thread. */
3537 /* Force the stub to choose a thread. */
3538 set_general_thread (null_ptid
);
3541 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3542 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3543 error (_("remote didn't report the current thread in non-stop mode"));
3545 get_offsets (); /* Get text, data & bss offsets. */
3547 /* In non-stop mode, any cached wait status will be stored in
3548 the stop reply queue. */
3549 gdb_assert (wait_status
== NULL
);
3551 /* Report all signals during attach/startup. */
3552 remote_pass_signals (0, NULL
);
3555 /* If we connected to a live target, do some additional setup. */
3556 if (target_has_execution
)
3558 if (exec_bfd
) /* No use without an exec file. */
3559 remote_check_symbols (symfile_objfile
);
3562 /* Possibly the target has been engaged in a trace run started
3563 previously; find out where things are at. */
3564 if (remote_get_trace_status (current_trace_status ()) != -1)
3566 struct uploaded_tp
*uploaded_tps
= NULL
;
3567 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3569 if (current_trace_status ()->running
)
3570 printf_filtered (_("Trace is already running on the target.\n"));
3572 /* Get trace state variables first, they may be checked when
3573 parsing uploaded commands. */
3575 remote_upload_trace_state_variables (&uploaded_tsvs
);
3577 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3579 remote_upload_tracepoints (&uploaded_tps
);
3581 merge_uploaded_tracepoints (&uploaded_tps
);
3584 /* The thread and inferior lists are now synchronized with the
3585 target, our symbols have been relocated, and we're merged the
3586 target's tracepoints with ours. We're done with basic start
3588 rs
->starting_up
= 0;
3590 /* If breakpoints are global, insert them now. */
3591 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3592 && breakpoints_always_inserted_mode ())
3593 insert_breakpoints ();
3596 /* Open a connection to a remote debugger.
3597 NAME is the filename used for communication. */
3600 remote_open (char *name
, int from_tty
)
3602 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3605 /* Open a connection to a remote debugger using the extended
3606 remote gdb protocol. NAME is the filename used for communication. */
3609 extended_remote_open (char *name
, int from_tty
)
3611 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3614 /* Generic code for opening a connection to a remote target. */
3617 init_all_packet_configs (void)
3621 for (i
= 0; i
< PACKET_MAX
; i
++)
3622 update_packet_config (&remote_protocol_packets
[i
]);
3625 /* Symbol look-up. */
3628 remote_check_symbols (struct objfile
*objfile
)
3630 struct remote_state
*rs
= get_remote_state ();
3631 char *msg
, *reply
, *tmp
;
3632 struct minimal_symbol
*sym
;
3635 /* The remote side has no concept of inferiors that aren't running
3636 yet, it only knows about running processes. If we're connected
3637 but our current inferior is not running, we should not invite the
3638 remote target to request symbol lookups related to its
3639 (unrelated) current process. */
3640 if (!target_has_execution
)
3643 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3646 /* Make sure the remote is pointing at the right process. Note
3647 there's no way to select "no process". */
3648 set_general_process ();
3650 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3651 because we need both at the same time. */
3652 msg
= alloca (get_remote_packet_size ());
3654 /* Invite target to request symbol lookups. */
3656 putpkt ("qSymbol::");
3657 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3658 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3661 while (strncmp (reply
, "qSymbol:", 8) == 0)
3664 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3666 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3668 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3671 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3672 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3674 /* If this is a function address, return the start of code
3675 instead of any data function descriptor. */
3676 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3680 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3681 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3685 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3690 static struct serial
*
3691 remote_serial_open (char *name
)
3693 static int udp_warning
= 0;
3695 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3696 of in ser-tcp.c, because it is the remote protocol assuming that the
3697 serial connection is reliable and not the serial connection promising
3699 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3701 warning (_("The remote protocol may be unreliable over UDP.\n"
3702 "Some events may be lost, rendering further debugging "
3707 return serial_open (name
);
3710 /* Inform the target of our permission settings. The permission flags
3711 work without this, but if the target knows the settings, it can do
3712 a couple things. First, it can add its own check, to catch cases
3713 that somehow manage to get by the permissions checks in target
3714 methods. Second, if the target is wired to disallow particular
3715 settings (for instance, a system in the field that is not set up to
3716 be able to stop at a breakpoint), it can object to any unavailable
3720 remote_set_permissions (void)
3722 struct remote_state
*rs
= get_remote_state ();
3724 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3725 "WriteReg:%x;WriteMem:%x;"
3726 "InsertBreak:%x;InsertTrace:%x;"
3727 "InsertFastTrace:%x;Stop:%x",
3728 may_write_registers
, may_write_memory
,
3729 may_insert_breakpoints
, may_insert_tracepoints
,
3730 may_insert_fast_tracepoints
, may_stop
);
3732 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3734 /* If the target didn't like the packet, warn the user. Do not try
3735 to undo the user's settings, that would just be maddening. */
3736 if (strcmp (rs
->buf
, "OK") != 0)
3737 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3740 /* This type describes each known response to the qSupported
3742 struct protocol_feature
3744 /* The name of this protocol feature. */
3747 /* The default for this protocol feature. */
3748 enum packet_support default_support
;
3750 /* The function to call when this feature is reported, or after
3751 qSupported processing if the feature is not supported.
3752 The first argument points to this structure. The second
3753 argument indicates whether the packet requested support be
3754 enabled, disabled, or probed (or the default, if this function
3755 is being called at the end of processing and this feature was
3756 not reported). The third argument may be NULL; if not NULL, it
3757 is a NUL-terminated string taken from the packet following
3758 this feature's name and an equals sign. */
3759 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3762 /* The corresponding packet for this feature. Only used if
3763 FUNC is remote_supported_packet. */
3768 remote_supported_packet (const struct protocol_feature
*feature
,
3769 enum packet_support support
,
3770 const char *argument
)
3774 warning (_("Remote qSupported response supplied an unexpected value for"
3775 " \"%s\"."), feature
->name
);
3779 if (remote_protocol_packets
[feature
->packet
].support
3780 == PACKET_SUPPORT_UNKNOWN
)
3781 remote_protocol_packets
[feature
->packet
].support
= support
;
3785 remote_packet_size (const struct protocol_feature
*feature
,
3786 enum packet_support support
, const char *value
)
3788 struct remote_state
*rs
= get_remote_state ();
3793 if (support
!= PACKET_ENABLE
)
3796 if (value
== NULL
|| *value
== '\0')
3798 warning (_("Remote target reported \"%s\" without a size."),
3804 packet_size
= strtol (value
, &value_end
, 16);
3805 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3807 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3808 feature
->name
, value
);
3812 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3814 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3815 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3816 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3819 /* Record the new maximum packet size. */
3820 rs
->explicit_packet_size
= packet_size
;
3824 remote_multi_process_feature (const struct protocol_feature
*feature
,
3825 enum packet_support support
, const char *value
)
3827 struct remote_state
*rs
= get_remote_state ();
3829 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3833 remote_non_stop_feature (const struct protocol_feature
*feature
,
3834 enum packet_support support
, const char *value
)
3836 struct remote_state
*rs
= get_remote_state ();
3838 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3842 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3843 enum packet_support support
,
3846 struct remote_state
*rs
= get_remote_state ();
3848 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3852 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3853 enum packet_support support
,
3856 struct remote_state
*rs
= get_remote_state ();
3858 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3862 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3863 enum packet_support support
,
3866 struct remote_state
*rs
= get_remote_state ();
3868 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3872 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3873 enum packet_support support
,
3876 struct remote_state
*rs
= get_remote_state ();
3878 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3882 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3883 enum packet_support support
,
3886 struct remote_state
*rs
= get_remote_state ();
3888 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3892 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3893 enum packet_support support
,
3896 struct remote_state
*rs
= get_remote_state ();
3898 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3902 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3903 enum packet_support support
,
3906 struct remote_state
*rs
= get_remote_state ();
3908 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3912 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3913 enum packet_support support
,
3916 struct remote_state
*rs
= get_remote_state ();
3918 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3922 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3923 enum packet_support support
,
3926 struct remote_state
*rs
= get_remote_state ();
3928 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3931 static struct protocol_feature remote_protocol_features
[] = {
3932 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3933 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3934 PACKET_qXfer_auxv
},
3935 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3936 PACKET_qXfer_features
},
3937 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3938 PACKET_qXfer_libraries
},
3939 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3940 PACKET_qXfer_libraries_svr4
},
3941 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3942 PACKET_qXfer_memory_map
},
3943 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3944 PACKET_qXfer_spu_read
},
3945 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3946 PACKET_qXfer_spu_write
},
3947 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3948 PACKET_qXfer_osdata
},
3949 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3950 PACKET_qXfer_threads
},
3951 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3952 PACKET_qXfer_traceframe_info
},
3953 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3954 PACKET_QPassSignals
},
3955 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3956 PACKET_QProgramSignals
},
3957 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3958 PACKET_QStartNoAckMode
},
3959 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3960 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3961 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3962 PACKET_qXfer_siginfo_read
},
3963 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3964 PACKET_qXfer_siginfo_write
},
3965 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3966 PACKET_ConditionalTracepoints
},
3967 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3968 PACKET_ConditionalBreakpoints
},
3969 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3970 PACKET_BreakpointCommands
},
3971 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3972 PACKET_FastTracepoints
},
3973 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3974 PACKET_StaticTracepoints
},
3975 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3976 PACKET_InstallInTrace
},
3977 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3979 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3981 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3983 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3984 PACKET_TracepointSource
},
3985 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3987 { "EnableDisableTracepoints", PACKET_DISABLE
,
3988 remote_enable_disable_tracepoint_feature
, -1 },
3989 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3990 PACKET_qXfer_fdpic
},
3991 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3993 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3994 PACKET_QDisableRandomization
},
3995 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3996 { "tracenz", PACKET_DISABLE
,
3997 remote_string_tracing_feature
, -1 },
4000 static char *remote_support_xml
;
4002 /* Register string appended to "xmlRegisters=" in qSupported query. */
4005 register_remote_support_xml (const char *xml
)
4007 #if defined(HAVE_LIBEXPAT)
4008 if (remote_support_xml
== NULL
)
4009 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4012 char *copy
= xstrdup (remote_support_xml
+ 13);
4013 char *p
= strtok (copy
, ",");
4017 if (strcmp (p
, xml
) == 0)
4024 while ((p
= strtok (NULL
, ",")) != NULL
);
4027 remote_support_xml
= reconcat (remote_support_xml
,
4028 remote_support_xml
, ",", xml
,
4035 remote_query_supported_append (char *msg
, const char *append
)
4038 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4040 return xstrdup (append
);
4044 remote_query_supported (void)
4046 struct remote_state
*rs
= get_remote_state ();
4049 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4051 /* The packet support flags are handled differently for this packet
4052 than for most others. We treat an error, a disabled packet, and
4053 an empty response identically: any features which must be reported
4054 to be used will be automatically disabled. An empty buffer
4055 accomplishes this, since that is also the representation for a list
4056 containing no features. */
4059 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4062 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4064 q
= remote_query_supported_append (q
, "multiprocess+");
4066 if (remote_support_xml
)
4067 q
= remote_query_supported_append (q
, remote_support_xml
);
4069 q
= remote_query_supported_append (q
, "qRelocInsn+");
4071 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4074 do_cleanups (old_chain
);
4076 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4078 /* If an error occured, warn, but do not return - just reset the
4079 buffer to empty and go on to disable features. */
4080 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4083 warning (_("Remote failure reply: %s"), rs
->buf
);
4088 memset (seen
, 0, sizeof (seen
));
4093 enum packet_support is_supported
;
4094 char *p
, *end
, *name_end
, *value
;
4096 /* First separate out this item from the rest of the packet. If
4097 there's another item after this, we overwrite the separator
4098 (terminated strings are much easier to work with). */
4100 end
= strchr (p
, ';');
4103 end
= p
+ strlen (p
);
4113 warning (_("empty item in \"qSupported\" response"));
4118 name_end
= strchr (p
, '=');
4121 /* This is a name=value entry. */
4122 is_supported
= PACKET_ENABLE
;
4123 value
= name_end
+ 1;
4132 is_supported
= PACKET_ENABLE
;
4136 is_supported
= PACKET_DISABLE
;
4140 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4144 warning (_("unrecognized item \"%s\" "
4145 "in \"qSupported\" response"), p
);
4151 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4152 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4154 const struct protocol_feature
*feature
;
4157 feature
= &remote_protocol_features
[i
];
4158 feature
->func (feature
, is_supported
, value
);
4163 /* If we increased the packet size, make sure to increase the global
4164 buffer size also. We delay this until after parsing the entire
4165 qSupported packet, because this is the same buffer we were
4167 if (rs
->buf_size
< rs
->explicit_packet_size
)
4169 rs
->buf_size
= rs
->explicit_packet_size
;
4170 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4173 /* Handle the defaults for unmentioned features. */
4174 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4177 const struct protocol_feature
*feature
;
4179 feature
= &remote_protocol_features
[i
];
4180 feature
->func (feature
, feature
->default_support
, NULL
);
4186 remote_open_1 (char *name
, int from_tty
,
4187 struct target_ops
*target
, int extended_p
)
4189 struct remote_state
*rs
= get_remote_state ();
4192 error (_("To open a remote debug connection, you need to specify what\n"
4193 "serial device is attached to the remote system\n"
4194 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4196 /* See FIXME above. */
4197 if (!target_async_permitted
)
4198 wait_forever_enabled_p
= 1;
4200 /* If we're connected to a running target, target_preopen will kill it.
4201 But if we're connected to a target system with no running process,
4202 then we will still be connected when it returns. Ask this question
4203 first, before target_preopen has a chance to kill anything. */
4204 if (remote_desc
!= NULL
&& !have_inferiors ())
4207 || query (_("Already connected to a remote target. Disconnect? ")))
4210 error (_("Still connected."));
4213 target_preopen (from_tty
);
4215 unpush_target (target
);
4217 /* This time without a query. If we were connected to an
4218 extended-remote target and target_preopen killed the running
4219 process, we may still be connected. If we are starting "target
4220 remote" now, the extended-remote target will not have been
4221 removed by unpush_target. */
4222 if (remote_desc
!= NULL
&& !have_inferiors ())
4225 /* Make sure we send the passed signals list the next time we resume. */
4226 xfree (last_pass_packet
);
4227 last_pass_packet
= NULL
;
4229 /* Make sure we send the program signals list the next time we
4231 xfree (last_program_signals_packet
);
4232 last_program_signals_packet
= NULL
;
4234 remote_fileio_reset ();
4235 reopen_exec_file ();
4238 remote_desc
= remote_serial_open (name
);
4240 perror_with_name (name
);
4242 if (baud_rate
!= -1)
4244 if (serial_setbaudrate (remote_desc
, baud_rate
))
4246 /* The requested speed could not be set. Error out to
4247 top level after closing remote_desc. Take care to
4248 set remote_desc to NULL to avoid closing remote_desc
4250 serial_close (remote_desc
);
4252 perror_with_name (name
);
4256 serial_raw (remote_desc
);
4258 /* If there is something sitting in the buffer we might take it as a
4259 response to a command, which would be bad. */
4260 serial_flush_input (remote_desc
);
4264 puts_filtered ("Remote debugging using ");
4265 puts_filtered (name
);
4266 puts_filtered ("\n");
4268 push_target (target
); /* Switch to using remote target now. */
4270 /* Register extra event sources in the event loop. */
4271 remote_async_inferior_event_token
4272 = create_async_event_handler (remote_async_inferior_event_handler
,
4274 remote_notif_register_async_event_handler ();
4276 /* Reset the target state; these things will be queried either by
4277 remote_query_supported or as they are needed. */
4278 init_all_packet_configs ();
4279 rs
->cached_wait_status
= 0;
4280 rs
->explicit_packet_size
= 0;
4282 rs
->multi_process_aware
= 0;
4283 rs
->extended
= extended_p
;
4284 rs
->non_stop_aware
= 0;
4285 rs
->waiting_for_stop_reply
= 0;
4286 rs
->ctrlc_pending_p
= 0;
4288 general_thread
= not_sent_ptid
;
4289 continue_thread
= not_sent_ptid
;
4290 remote_traceframe_number
= -1;
4292 /* Probe for ability to use "ThreadInfo" query, as required. */
4293 use_threadinfo_query
= 1;
4294 use_threadextra_query
= 1;
4296 if (target_async_permitted
)
4298 /* With this target we start out by owning the terminal. */
4299 remote_async_terminal_ours_p
= 1;
4301 /* FIXME: cagney/1999-09-23: During the initial connection it is
4302 assumed that the target is already ready and able to respond to
4303 requests. Unfortunately remote_start_remote() eventually calls
4304 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4305 around this. Eventually a mechanism that allows
4306 wait_for_inferior() to expect/get timeouts will be
4308 wait_forever_enabled_p
= 0;
4311 /* First delete any symbols previously loaded from shared libraries. */
4312 no_shared_libraries (NULL
, 0);
4315 init_thread_list ();
4317 /* Start the remote connection. If error() or QUIT, discard this
4318 target (we'd otherwise be in an inconsistent state) and then
4319 propogate the error on up the exception chain. This ensures that
4320 the caller doesn't stumble along blindly assuming that the
4321 function succeeded. The CLI doesn't have this problem but other
4322 UI's, such as MI do.
4324 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4325 this function should return an error indication letting the
4326 caller restore the previous state. Unfortunately the command
4327 ``target remote'' is directly wired to this function making that
4328 impossible. On a positive note, the CLI side of this problem has
4329 been fixed - the function set_cmd_context() makes it possible for
4330 all the ``target ....'' commands to share a common callback
4331 function. See cli-dump.c. */
4333 volatile struct gdb_exception ex
;
4335 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4337 remote_start_remote (from_tty
, target
, extended_p
);
4341 /* Pop the partially set up target - unless something else did
4342 already before throwing the exception. */
4343 if (remote_desc
!= NULL
)
4345 if (target_async_permitted
)
4346 wait_forever_enabled_p
= 1;
4347 throw_exception (ex
);
4351 if (target_async_permitted
)
4352 wait_forever_enabled_p
= 1;
4355 /* This takes a program previously attached to and detaches it. After
4356 this is done, GDB can be used to debug some other program. We
4357 better not have left any breakpoints in the target program or it'll
4358 die when it hits one. */
4361 remote_detach_1 (char *args
, int from_tty
, int extended
)
4363 int pid
= ptid_get_pid (inferior_ptid
);
4364 struct remote_state
*rs
= get_remote_state ();
4367 error (_("Argument given to \"detach\" when remotely debugging."));
4369 if (!target_has_execution
)
4370 error (_("No process to detach from."));
4374 char *exec_file
= get_exec_file (0);
4375 if (exec_file
== NULL
)
4377 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4378 target_pid_to_str (pid_to_ptid (pid
)));
4379 gdb_flush (gdb_stdout
);
4382 /* Tell the remote target to detach. */
4383 if (remote_multi_process_p (rs
))
4384 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4386 strcpy (rs
->buf
, "D");
4389 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4391 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4393 else if (rs
->buf
[0] == '\0')
4394 error (_("Remote doesn't know how to detach"));
4396 error (_("Can't detach process."));
4398 if (from_tty
&& !extended
)
4399 puts_filtered (_("Ending remote debugging.\n"));
4401 target_mourn_inferior ();
4405 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4407 remote_detach_1 (args
, from_tty
, 0);
4411 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4413 remote_detach_1 (args
, from_tty
, 1);
4416 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4419 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4422 error (_("Argument given to \"disconnect\" when remotely debugging."));
4424 /* Make sure we unpush even the extended remote targets; mourn
4425 won't do it. So call remote_mourn_1 directly instead of
4426 target_mourn_inferior. */
4427 remote_mourn_1 (target
);
4430 puts_filtered ("Ending remote debugging.\n");
4433 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4434 be chatty about it. */
4437 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4439 struct remote_state
*rs
= get_remote_state ();
4441 char *wait_status
= NULL
;
4443 pid
= parse_pid_to_attach (args
);
4445 /* Remote PID can be freely equal to getpid, do not check it here the same
4446 way as in other targets. */
4448 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4449 error (_("This target does not support attaching to a process"));
4453 char *exec_file
= get_exec_file (0);
4456 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4457 target_pid_to_str (pid_to_ptid (pid
)));
4459 printf_unfiltered (_("Attaching to %s\n"),
4460 target_pid_to_str (pid_to_ptid (pid
)));
4462 gdb_flush (gdb_stdout
);
4465 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4469 if (packet_ok (rs
->buf
,
4470 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4474 /* Save the reply for later. */
4475 wait_status
= alloca (strlen (rs
->buf
) + 1);
4476 strcpy (wait_status
, rs
->buf
);
4478 else if (strcmp (rs
->buf
, "OK") != 0)
4479 error (_("Attaching to %s failed with: %s"),
4480 target_pid_to_str (pid_to_ptid (pid
)),
4483 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4484 error (_("This target does not support attaching to a process"));
4486 error (_("Attaching to %s failed"),
4487 target_pid_to_str (pid_to_ptid (pid
)));
4489 set_current_inferior (remote_add_inferior (0, pid
, 1));
4491 inferior_ptid
= pid_to_ptid (pid
);
4495 struct thread_info
*thread
;
4497 /* Get list of threads. */
4498 remote_threads_info (target
);
4500 thread
= first_thread_of_process (pid
);
4502 inferior_ptid
= thread
->ptid
;
4504 inferior_ptid
= pid_to_ptid (pid
);
4506 /* Invalidate our notion of the remote current thread. */
4507 record_currthread (minus_one_ptid
);
4511 /* Now, if we have thread information, update inferior_ptid. */
4512 inferior_ptid
= remote_current_thread (inferior_ptid
);
4514 /* Add the main thread to the thread list. */
4515 add_thread_silent (inferior_ptid
);
4518 /* Next, if the target can specify a description, read it. We do
4519 this before anything involving memory or registers. */
4520 target_find_description ();
4524 /* Use the previously fetched status. */
4525 gdb_assert (wait_status
!= NULL
);
4527 if (target_can_async_p ())
4529 struct notif_event
*reply
4530 = remote_notif_parse (¬if_client_stop
, wait_status
);
4532 push_stop_reply ((struct stop_reply
*) reply
);
4534 target_async (inferior_event_handler
, 0);
4538 gdb_assert (wait_status
!= NULL
);
4539 strcpy (rs
->buf
, wait_status
);
4540 rs
->cached_wait_status
= 1;
4544 gdb_assert (wait_status
== NULL
);
4548 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4550 extended_remote_attach_1 (ops
, args
, from_tty
);
4553 /* Convert hex digit A to a number. */
4558 if (a
>= '0' && a
<= '9')
4560 else if (a
>= 'a' && a
<= 'f')
4561 return a
- 'a' + 10;
4562 else if (a
>= 'A' && a
<= 'F')
4563 return a
- 'A' + 10;
4565 error (_("Reply contains invalid hex digit %d"), a
);
4569 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4573 for (i
= 0; i
< count
; i
++)
4575 if (hex
[0] == 0 || hex
[1] == 0)
4577 /* Hex string is short, or of uneven length.
4578 Return the count that has been converted so far. */
4581 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4587 /* Convert number NIB to a hex digit. */
4595 return 'a' + nib
- 10;
4599 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4603 /* May use a length, or a nul-terminated string as input. */
4605 count
= strlen ((char *) bin
);
4607 for (i
= 0; i
< count
; i
++)
4609 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4610 *hex
++ = tohex (*bin
++ & 0xf);
4616 /* Check for the availability of vCont. This function should also check
4620 remote_vcont_probe (struct remote_state
*rs
)
4624 strcpy (rs
->buf
, "vCont?");
4626 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4629 /* Make sure that the features we assume are supported. */
4630 if (strncmp (buf
, "vCont", 5) == 0)
4633 int support_s
, support_S
, support_c
, support_C
;
4639 rs
->support_vCont_t
= 0;
4640 while (p
&& *p
== ';')
4643 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4645 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4647 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4649 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4651 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4652 rs
->support_vCont_t
= 1;
4654 p
= strchr (p
, ';');
4657 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4658 BUF will make packet_ok disable the packet. */
4659 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4663 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4666 /* Helper function for building "vCont" resumptions. Write a
4667 resumption to P. ENDP points to one-passed-the-end of the buffer
4668 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4669 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4670 resumed thread should be single-stepped and/or signalled. If PTID
4671 equals minus_one_ptid, then all threads are resumed; if PTID
4672 represents a process, then all threads of the process are resumed;
4673 the thread to be stepped and/or signalled is given in the global
4677 append_resumption (char *p
, char *endp
,
4678 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4680 struct remote_state
*rs
= get_remote_state ();
4682 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4683 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4685 p
+= xsnprintf (p
, endp
- p
, ";s");
4686 else if (siggnal
!= GDB_SIGNAL_0
)
4687 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4689 p
+= xsnprintf (p
, endp
- p
, ";c");
4691 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4695 /* All (-1) threads of process. */
4696 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4698 p
+= xsnprintf (p
, endp
- p
, ":");
4699 p
= write_ptid (p
, endp
, nptid
);
4701 else if (!ptid_equal (ptid
, minus_one_ptid
))
4703 p
+= xsnprintf (p
, endp
- p
, ":");
4704 p
= write_ptid (p
, endp
, ptid
);
4710 /* Append a vCont continue-with-signal action for threads that have a
4711 non-zero stop signal. */
4714 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4716 struct thread_info
*thread
;
4718 ALL_THREADS (thread
)
4719 if (ptid_match (thread
->ptid
, ptid
)
4720 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4721 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4722 && signal_pass_state (thread
->suspend
.stop_signal
))
4724 p
= append_resumption (p
, endp
, thread
->ptid
,
4725 0, thread
->suspend
.stop_signal
);
4726 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4732 /* Resume the remote inferior by using a "vCont" packet. The thread
4733 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4734 resumed thread should be single-stepped and/or signalled. If PTID
4735 equals minus_one_ptid, then all threads are resumed; the thread to
4736 be stepped and/or signalled is given in the global INFERIOR_PTID.
4737 This function returns non-zero iff it resumes the inferior.
4739 This function issues a strict subset of all possible vCont commands at the
4743 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4745 struct remote_state
*rs
= get_remote_state ();
4749 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4750 remote_vcont_probe (rs
);
4752 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4756 endp
= rs
->buf
+ get_remote_packet_size ();
4758 /* If we could generate a wider range of packets, we'd have to worry
4759 about overflowing BUF. Should there be a generic
4760 "multi-part-packet" packet? */
4762 p
+= xsnprintf (p
, endp
- p
, "vCont");
4764 if (ptid_equal (ptid
, magic_null_ptid
))
4766 /* MAGIC_NULL_PTID means that we don't have any active threads,
4767 so we don't have any TID numbers the inferior will
4768 understand. Make sure to only send forms that do not specify
4770 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4772 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4774 /* Resume all threads (of all processes, or of a single
4775 process), with preference for INFERIOR_PTID. This assumes
4776 inferior_ptid belongs to the set of all threads we are about
4778 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4780 /* Step inferior_ptid, with or without signal. */
4781 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4784 /* Also pass down any pending signaled resumption for other
4785 threads not the current. */
4786 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4788 /* And continue others without a signal. */
4789 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4793 /* Scheduler locking; resume only PTID. */
4794 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4797 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4802 /* In non-stop, the stub replies to vCont with "OK". The stop
4803 reply will be reported asynchronously by means of a `%Stop'
4805 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4806 if (strcmp (rs
->buf
, "OK") != 0)
4807 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4813 /* Tell the remote machine to resume. */
4815 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4817 static int last_sent_step
;
4820 remote_resume (struct target_ops
*ops
,
4821 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4823 struct remote_state
*rs
= get_remote_state ();
4826 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4827 (explained in remote-notif.c:handle_notification) so
4828 remote_notif_process is not called. We need find a place where
4829 it is safe to start a 'vNotif' sequence. It is good to do it
4830 before resuming inferior, because inferior was stopped and no RSP
4831 traffic at that moment. */
4833 remote_notif_process (¬if_client_stop
);
4835 last_sent_signal
= siggnal
;
4836 last_sent_step
= step
;
4838 /* The vCont packet doesn't need to specify threads via Hc. */
4839 /* No reverse support (yet) for vCont. */
4840 if (execution_direction
!= EXEC_REVERSE
)
4841 if (remote_vcont_resume (ptid
, step
, siggnal
))
4844 /* All other supported resume packets do use Hc, so set the continue
4846 if (ptid_equal (ptid
, minus_one_ptid
))
4847 set_continue_thread (any_thread_ptid
);
4849 set_continue_thread (ptid
);
4852 if (execution_direction
== EXEC_REVERSE
)
4854 /* We don't pass signals to the target in reverse exec mode. */
4855 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4856 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4860 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4861 error (_("Remote reverse-step not supported."));
4863 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4864 error (_("Remote reverse-continue not supported."));
4866 strcpy (buf
, step
? "bs" : "bc");
4868 else if (siggnal
!= GDB_SIGNAL_0
)
4870 buf
[0] = step
? 'S' : 'C';
4871 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4872 buf
[2] = tohex (((int) siggnal
) & 0xf);
4876 strcpy (buf
, step
? "s" : "c");
4881 /* We are about to start executing the inferior, let's register it
4882 with the event loop. NOTE: this is the one place where all the
4883 execution commands end up. We could alternatively do this in each
4884 of the execution commands in infcmd.c. */
4885 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4886 into infcmd.c in order to allow inferior function calls to work
4887 NOT asynchronously. */
4888 if (target_can_async_p ())
4889 target_async (inferior_event_handler
, 0);
4891 /* We've just told the target to resume. The remote server will
4892 wait for the inferior to stop, and then send a stop reply. In
4893 the mean time, we can't start another command/query ourselves
4894 because the stub wouldn't be ready to process it. This applies
4895 only to the base all-stop protocol, however. In non-stop (which
4896 only supports vCont), the stub replies with an "OK", and is
4897 immediate able to process further serial input. */
4899 rs
->waiting_for_stop_reply
= 1;
4903 /* Set up the signal handler for SIGINT, while the target is
4904 executing, ovewriting the 'regular' SIGINT signal handler. */
4906 initialize_sigint_signal_handler (void)
4908 signal (SIGINT
, handle_remote_sigint
);
4911 /* Signal handler for SIGINT, while the target is executing. */
4913 handle_remote_sigint (int sig
)
4915 signal (sig
, handle_remote_sigint_twice
);
4916 mark_async_signal_handler (sigint_remote_token
);
4919 /* Signal handler for SIGINT, installed after SIGINT has already been
4920 sent once. It will take effect the second time that the user sends
4923 handle_remote_sigint_twice (int sig
)
4925 signal (sig
, handle_remote_sigint
);
4926 mark_async_signal_handler (sigint_remote_twice_token
);
4929 /* Perform the real interruption of the target execution, in response
4932 async_remote_interrupt (gdb_client_data arg
)
4935 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4937 target_stop (inferior_ptid
);
4940 /* Perform interrupt, if the first attempt did not succeed. Just give
4941 up on the target alltogether. */
4943 async_remote_interrupt_twice (gdb_client_data arg
)
4946 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4951 /* Reinstall the usual SIGINT handlers, after the target has
4954 cleanup_sigint_signal_handler (void *dummy
)
4956 signal (SIGINT
, handle_sigint
);
4959 /* Send ^C to target to halt it. Target will respond, and send us a
4961 static void (*ofunc
) (int);
4963 /* The command line interface's stop routine. This function is installed
4964 as a signal handler for SIGINT. The first time a user requests a
4965 stop, we call remote_stop to send a break or ^C. If there is no
4966 response from the target (it didn't stop when the user requested it),
4967 we ask the user if he'd like to detach from the target. */
4969 remote_interrupt (int signo
)
4971 /* If this doesn't work, try more severe steps. */
4972 signal (signo
, remote_interrupt_twice
);
4974 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4977 /* The user typed ^C twice. */
4980 remote_interrupt_twice (int signo
)
4982 signal (signo
, ofunc
);
4983 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4984 signal (signo
, remote_interrupt
);
4987 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4988 thread, all threads of a remote process, or all threads of all
4992 remote_stop_ns (ptid_t ptid
)
4994 struct remote_state
*rs
= get_remote_state ();
4996 char *endp
= rs
->buf
+ get_remote_packet_size ();
4998 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4999 remote_vcont_probe (rs
);
5001 if (!rs
->support_vCont_t
)
5002 error (_("Remote server does not support stopping threads"));
5004 if (ptid_equal (ptid
, minus_one_ptid
)
5005 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5006 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5011 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5013 if (ptid_is_pid (ptid
))
5014 /* All (-1) threads of process. */
5015 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5018 /* Small optimization: if we already have a stop reply for
5019 this thread, no use in telling the stub we want this
5021 if (peek_stop_reply (ptid
))
5027 write_ptid (p
, endp
, nptid
);
5030 /* In non-stop, we get an immediate OK reply. The stop reply will
5031 come in asynchronously by notification. */
5033 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5034 if (strcmp (rs
->buf
, "OK") != 0)
5035 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5038 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5039 remote target. It is undefined which thread of which process
5040 reports the stop. */
5043 remote_stop_as (ptid_t ptid
)
5045 struct remote_state
*rs
= get_remote_state ();
5047 rs
->ctrlc_pending_p
= 1;
5049 /* If the inferior is stopped already, but the core didn't know
5050 about it yet, just ignore the request. The cached wait status
5051 will be collected in remote_wait. */
5052 if (rs
->cached_wait_status
)
5055 /* Send interrupt_sequence to remote target. */
5056 send_interrupt_sequence ();
5059 /* This is the generic stop called via the target vector. When a target
5060 interrupt is requested, either by the command line or the GUI, we
5061 will eventually end up here. */
5064 remote_stop (ptid_t ptid
)
5067 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5070 remote_stop_ns (ptid
);
5072 remote_stop_as (ptid
);
5075 /* Ask the user what to do when an interrupt is received. */
5078 interrupt_query (void)
5080 target_terminal_ours ();
5082 if (target_can_async_p ())
5084 signal (SIGINT
, handle_sigint
);
5085 deprecated_throw_reason (RETURN_QUIT
);
5089 if (query (_("Interrupted while waiting for the program.\n\
5090 Give up (and stop debugging it)? ")))
5093 deprecated_throw_reason (RETURN_QUIT
);
5097 target_terminal_inferior ();
5100 /* Enable/disable target terminal ownership. Most targets can use
5101 terminal groups to control terminal ownership. Remote targets are
5102 different in that explicit transfer of ownership to/from GDB/target
5106 remote_terminal_inferior (void)
5108 if (!target_async_permitted
)
5109 /* Nothing to do. */
5112 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5113 idempotent. The event-loop GDB talking to an asynchronous target
5114 with a synchronous command calls this function from both
5115 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5116 transfer the terminal to the target when it shouldn't this guard
5118 if (!remote_async_terminal_ours_p
)
5120 delete_file_handler (input_fd
);
5121 remote_async_terminal_ours_p
= 0;
5122 initialize_sigint_signal_handler ();
5123 /* NOTE: At this point we could also register our selves as the
5124 recipient of all input. Any characters typed could then be
5125 passed on down to the target. */
5129 remote_terminal_ours (void)
5131 if (!target_async_permitted
)
5132 /* Nothing to do. */
5135 /* See FIXME in remote_terminal_inferior. */
5136 if (remote_async_terminal_ours_p
)
5138 cleanup_sigint_signal_handler (NULL
);
5139 add_file_handler (input_fd
, stdin_event_handler
, 0);
5140 remote_async_terminal_ours_p
= 1;
5144 remote_console_output (char *msg
)
5148 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5151 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5155 fputs_unfiltered (tb
, gdb_stdtarg
);
5157 gdb_flush (gdb_stdtarg
);
5160 typedef struct cached_reg
5163 gdb_byte data
[MAX_REGISTER_SIZE
];
5166 DEF_VEC_O(cached_reg_t
);
5168 typedef struct stop_reply
5170 struct notif_event base
;
5172 /* The identifier of the thread about this event */
5175 struct target_waitstatus ws
;
5177 /* Expedited registers. This makes remote debugging a bit more
5178 efficient for those targets that provide critical registers as
5179 part of their normal status mechanism (as another roundtrip to
5180 fetch them is avoided). */
5181 VEC(cached_reg_t
) *regcache
;
5183 int stopped_by_watchpoint_p
;
5184 CORE_ADDR watch_data_address
;
5192 DECLARE_QUEUE_P (stop_reply_p
);
5193 DEFINE_QUEUE_P (stop_reply_p
);
5194 /* The list of already fetched and acknowledged stop events. This
5195 queue is used for notification Stop, and other notifications
5196 don't need queue for their events, because the notification events
5197 of Stop can't be consumed immediately, so that events should be
5198 queued first, and be consumed by remote_wait_{ns,as} one per
5199 time. Other notifications can consume their events immediately,
5200 so queue is not needed for them. */
5201 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5204 stop_reply_xfree (struct stop_reply
*r
)
5208 VEC_free (cached_reg_t
, r
->regcache
);
5214 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5215 struct notif_event
*event
)
5217 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5221 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5222 struct notif_event
*event
)
5224 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5227 putpkt ((char *) self
->ack_command
);
5229 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5230 /* We got an unknown stop reply. */
5231 error (_("Unknown stop reply"));
5233 push_stop_reply (stop_reply
);
5237 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5239 /* We can't get pending events in remote_notif_process for
5240 notification stop, and we have to do this in remote_wait_ns
5241 instead. If we fetch all queued events from stub, remote stub
5242 may exit and we have no chance to process them back in
5244 mark_async_event_handler (remote_async_inferior_event_token
);
5249 stop_reply_dtr (struct notif_event
*event
)
5251 struct stop_reply
*r
= (struct stop_reply
*) event
;
5253 VEC_free (cached_reg_t
, r
->regcache
);
5256 static struct notif_event
*
5257 remote_notif_stop_alloc_reply (void)
5259 struct notif_event
*r
5260 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5262 r
->dtr
= stop_reply_dtr
;
5267 /* A client of notification Stop. */
5269 struct notif_client notif_client_stop
=
5273 remote_notif_stop_parse
,
5274 remote_notif_stop_ack
,
5275 remote_notif_stop_can_get_pending_events
,
5276 remote_notif_stop_alloc_reply
,
5280 /* A parameter to pass data in and out. */
5282 struct queue_iter_param
5285 struct stop_reply
*output
;
5288 /* Remove all queue elements meet the condition it checks. */
5291 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5292 QUEUE_ITER (stop_reply_p
) *iter
,
5296 struct queue_iter_param
*param
= data
;
5297 struct inferior
*inf
= param
->input
;
5299 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5301 stop_reply_xfree (event
);
5302 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5308 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5309 discard everything. */
5312 discard_pending_stop_replies (struct inferior
*inf
)
5315 struct queue_iter_param param
;
5316 struct stop_reply
*reply
5317 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5319 /* Discard the in-flight notification. */
5322 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5324 stop_reply_xfree (reply
);
5325 notif_client_stop
.pending_event
= NULL
;
5329 param
.output
= NULL
;
5330 /* Discard the stop replies we have already pulled with
5332 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5333 remote_notif_remove_all
, ¶m
);
5336 /* A parameter to pass data in and out. */
5339 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5340 QUEUE_ITER (stop_reply_p
) *iter
,
5344 struct queue_iter_param
*param
= data
;
5345 ptid_t
*ptid
= param
->input
;
5347 if (ptid_match (event
->ptid
, *ptid
))
5349 param
->output
= event
;
5350 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5357 /* Remove the first reply in 'stop_reply_queue' which matches
5360 static struct stop_reply
*
5361 remote_notif_remove_queued_reply (ptid_t ptid
)
5363 struct queue_iter_param param
;
5365 param
.input
= &ptid
;
5366 param
.output
= NULL
;
5368 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5369 remote_notif_remove_once_on_match
, ¶m
);
5371 fprintf_unfiltered (gdb_stdlog
,
5372 "notif: discard queued event: 'Stop' in %s\n",
5373 target_pid_to_str (ptid
));
5375 return param
.output
;
5378 /* Look for a queued stop reply belonging to PTID. If one is found,
5379 remove it from the queue, and return it. Returns NULL if none is
5380 found. If there are still queued events left to process, tell the
5381 event loop to get back to target_wait soon. */
5383 static struct stop_reply
*
5384 queued_stop_reply (ptid_t ptid
)
5386 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5388 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5389 /* There's still at least an event left. */
5390 mark_async_event_handler (remote_async_inferior_event_token
);
5395 /* Push a fully parsed stop reply in the stop reply queue. Since we
5396 know that we now have at least one queued event left to pass to the
5397 core side, tell the event loop to get back to target_wait soon. */
5400 push_stop_reply (struct stop_reply
*new_event
)
5402 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5405 fprintf_unfiltered (gdb_stdlog
,
5406 "notif: push 'Stop' %s to queue %d\n",
5407 target_pid_to_str (new_event
->ptid
),
5408 QUEUE_length (stop_reply_p
,
5411 mark_async_event_handler (remote_async_inferior_event_token
);
5415 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5416 QUEUE_ITER (stop_reply_p
) *iter
,
5417 struct stop_reply
*event
,
5420 ptid_t
*ptid
= data
;
5422 return !(ptid_equal (*ptid
, event
->ptid
)
5423 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5426 /* Returns true if we have a stop reply for PTID. */
5429 peek_stop_reply (ptid_t ptid
)
5431 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5432 stop_reply_match_ptid_and_ws
, &ptid
);
5435 /* Parse the stop reply in BUF. Either the function succeeds, and the
5436 result is stored in EVENT, or throws an error. */
5439 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5441 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5445 event
->ptid
= null_ptid
;
5446 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5447 event
->ws
.value
.integer
= 0;
5448 event
->solibs_changed
= 0;
5449 event
->replay_event
= 0;
5450 event
->stopped_by_watchpoint_p
= 0;
5451 event
->regcache
= NULL
;
5456 case 'T': /* Status with PC, SP, FP, ... */
5457 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5458 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5460 n... = register number
5461 r... = register contents
5464 p
= &buf
[3]; /* after Txx */
5472 /* If the packet contains a register number, save it in
5473 pnum and set p1 to point to the character following it.
5474 Otherwise p1 points to p. */
5476 /* If this packet is an awatch packet, don't parse the 'a'
5477 as a register number. */
5479 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5480 && strncmp (p
, "core", strlen ("core") != 0))
5482 /* Read the ``P'' register number. */
5483 pnum
= strtol (p
, &p_temp
, 16);
5489 if (p1
== p
) /* No register number present here. */
5491 p1
= strchr (p
, ':');
5493 error (_("Malformed packet(a) (missing colon): %s\n\
5496 if (strncmp (p
, "thread", p1
- p
) == 0)
5497 event
->ptid
= read_ptid (++p1
, &p
);
5498 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5499 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5500 || (strncmp (p
, "awatch", p1
- p
) == 0))
5502 event
->stopped_by_watchpoint_p
= 1;
5503 p
= unpack_varlen_hex (++p1
, &addr
);
5504 event
->watch_data_address
= (CORE_ADDR
) addr
;
5506 else if (strncmp (p
, "library", p1
- p
) == 0)
5510 while (*p_temp
&& *p_temp
!= ';')
5513 event
->solibs_changed
= 1;
5516 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5518 /* NO_HISTORY event.
5519 p1 will indicate "begin" or "end", but
5520 it makes no difference for now, so ignore it. */
5521 event
->replay_event
= 1;
5522 p_temp
= strchr (p1
+ 1, ';');
5526 else if (strncmp (p
, "core", p1
- p
) == 0)
5530 p
= unpack_varlen_hex (++p1
, &c
);
5535 /* Silently skip unknown optional info. */
5536 p_temp
= strchr (p1
+ 1, ';');
5543 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5544 cached_reg_t cached_reg
;
5549 error (_("Malformed packet(b) (missing colon): %s\n\
5555 error (_("Remote sent bad register number %s: %s\n\
5557 hex_string (pnum
), p
, buf
);
5559 cached_reg
.num
= reg
->regnum
;
5561 fieldsize
= hex2bin (p
, cached_reg
.data
,
5562 register_size (target_gdbarch (),
5565 if (fieldsize
< register_size (target_gdbarch (),
5567 warning (_("Remote reply is too short: %s"), buf
);
5569 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5573 error (_("Remote register badly formatted: %s\nhere: %s"),
5578 case 'S': /* Old style status, just signal only. */
5579 if (event
->solibs_changed
)
5580 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5581 else if (event
->replay_event
)
5582 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5585 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5586 event
->ws
.value
.sig
= (enum gdb_signal
)
5587 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5590 case 'W': /* Target exited. */
5597 /* GDB used to accept only 2 hex chars here. Stubs should
5598 only send more if they detect GDB supports multi-process
5600 p
= unpack_varlen_hex (&buf
[1], &value
);
5604 /* The remote process exited. */
5605 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5606 event
->ws
.value
.integer
= value
;
5610 /* The remote process exited with a signal. */
5611 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5612 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5615 /* If no process is specified, assume inferior_ptid. */
5616 pid
= ptid_get_pid (inferior_ptid
);
5625 else if (strncmp (p
,
5626 "process:", sizeof ("process:") - 1) == 0)
5630 p
+= sizeof ("process:") - 1;
5631 unpack_varlen_hex (p
, &upid
);
5635 error (_("unknown stop reply packet: %s"), buf
);
5638 error (_("unknown stop reply packet: %s"), buf
);
5639 event
->ptid
= pid_to_ptid (pid
);
5644 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5645 error (_("No process or thread specified in stop reply: %s"), buf
);
5648 /* When the stub wants to tell GDB about a new notification reply, it
5649 sends a notification (%Stop, for example). Those can come it at
5650 any time, hence, we have to make sure that any pending
5651 putpkt/getpkt sequence we're making is finished, before querying
5652 the stub for more events with the corresponding ack command
5653 (vStopped, for example). E.g., if we started a vStopped sequence
5654 immediately upon receiving the notification, something like this
5662 1.6) <-- (registers reply to step #1.3)
5664 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5667 To solve this, whenever we parse a %Stop notification successfully,
5668 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5669 doing whatever we were doing:
5675 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5676 2.5) <-- (registers reply to step #2.3)
5678 Eventualy after step #2.5, we return to the event loop, which
5679 notices there's an event on the
5680 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5681 associated callback --- the function below. At this point, we're
5682 always safe to start a vStopped sequence. :
5685 2.7) <-- T05 thread:2
5691 remote_notif_get_pending_events (struct notif_client
*nc
)
5693 struct remote_state
*rs
= get_remote_state ();
5695 if (nc
->pending_event
)
5698 fprintf_unfiltered (gdb_stdlog
,
5699 "notif: process: '%s' ack pending event\n",
5703 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5704 nc
->pending_event
= NULL
;
5708 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5709 if (strcmp (rs
->buf
, "OK") == 0)
5712 remote_notif_ack (nc
, rs
->buf
);
5718 fprintf_unfiltered (gdb_stdlog
,
5719 "notif: process: '%s' no pending reply\n",
5724 /* Called when it is decided that STOP_REPLY holds the info of the
5725 event that is to be returned to the core. This function always
5726 destroys STOP_REPLY. */
5729 process_stop_reply (struct stop_reply
*stop_reply
,
5730 struct target_waitstatus
*status
)
5734 *status
= stop_reply
->ws
;
5735 ptid
= stop_reply
->ptid
;
5737 /* If no thread/process was reported by the stub, assume the current
5739 if (ptid_equal (ptid
, null_ptid
))
5740 ptid
= inferior_ptid
;
5742 if (status
->kind
!= TARGET_WAITKIND_EXITED
5743 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5745 /* Expedited registers. */
5746 if (stop_reply
->regcache
)
5748 struct regcache
*regcache
5749 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5754 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5756 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5757 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5760 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5761 remote_watch_data_address
= stop_reply
->watch_data_address
;
5763 remote_notice_new_inferior (ptid
, 0);
5764 demand_private_info (ptid
)->core
= stop_reply
->core
;
5767 stop_reply_xfree (stop_reply
);
5771 /* The non-stop mode version of target_wait. */
5774 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5776 struct remote_state
*rs
= get_remote_state ();
5777 struct stop_reply
*stop_reply
;
5781 /* If in non-stop mode, get out of getpkt even if a
5782 notification is received. */
5784 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5785 0 /* forever */, &is_notif
);
5788 if (ret
!= -1 && !is_notif
)
5791 case 'E': /* Error of some sort. */
5792 /* We're out of sync with the target now. Did it continue
5793 or not? We can't tell which thread it was in non-stop,
5794 so just ignore this. */
5795 warning (_("Remote failure reply: %s"), rs
->buf
);
5797 case 'O': /* Console output. */
5798 remote_console_output (rs
->buf
+ 1);
5801 warning (_("Invalid remote reply: %s"), rs
->buf
);
5805 /* Acknowledge a pending stop reply that may have arrived in the
5807 if (notif_client_stop
.pending_event
!= NULL
)
5808 remote_notif_get_pending_events (¬if_client_stop
);
5810 /* If indeed we noticed a stop reply, we're done. */
5811 stop_reply
= queued_stop_reply (ptid
);
5812 if (stop_reply
!= NULL
)
5813 return process_stop_reply (stop_reply
, status
);
5815 /* Still no event. If we're just polling for an event, then
5816 return to the event loop. */
5817 if (options
& TARGET_WNOHANG
)
5819 status
->kind
= TARGET_WAITKIND_IGNORE
;
5820 return minus_one_ptid
;
5823 /* Otherwise do a blocking wait. */
5824 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5825 1 /* forever */, &is_notif
);
5829 /* Wait until the remote machine stops, then return, storing status in
5830 STATUS just as `wait' would. */
5833 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5835 struct remote_state
*rs
= get_remote_state ();
5836 ptid_t event_ptid
= null_ptid
;
5838 struct stop_reply
*stop_reply
;
5842 status
->kind
= TARGET_WAITKIND_IGNORE
;
5843 status
->value
.integer
= 0;
5845 stop_reply
= queued_stop_reply (ptid
);
5846 if (stop_reply
!= NULL
)
5847 return process_stop_reply (stop_reply
, status
);
5849 if (rs
->cached_wait_status
)
5850 /* Use the cached wait status, but only once. */
5851 rs
->cached_wait_status
= 0;
5857 if (!target_is_async_p ())
5859 ofunc
= signal (SIGINT
, remote_interrupt
);
5860 /* If the user hit C-c before this packet, or between packets,
5861 pretend that it was hit right here. */
5862 if (check_quit_flag ())
5865 remote_interrupt (SIGINT
);
5869 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5870 _never_ wait for ever -> test on target_is_async_p().
5871 However, before we do that we need to ensure that the caller
5872 knows how to take the target into/out of async mode. */
5873 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5874 wait_forever_enabled_p
, &is_notif
);
5876 /* GDB gets a notification. Return to core as this event is
5878 if (ret
!= -1 && is_notif
)
5879 return minus_one_ptid
;
5881 if (!target_is_async_p ())
5882 signal (SIGINT
, ofunc
);
5887 remote_stopped_by_watchpoint_p
= 0;
5889 /* We got something. */
5890 rs
->waiting_for_stop_reply
= 0;
5892 /* Assume that the target has acknowledged Ctrl-C unless we receive
5893 an 'F' or 'O' packet. */
5894 if (buf
[0] != 'F' && buf
[0] != 'O')
5895 rs
->ctrlc_pending_p
= 0;
5899 case 'E': /* Error of some sort. */
5900 /* We're out of sync with the target now. Did it continue or
5901 not? Not is more likely, so report a stop. */
5902 warning (_("Remote failure reply: %s"), buf
);
5903 status
->kind
= TARGET_WAITKIND_STOPPED
;
5904 status
->value
.sig
= GDB_SIGNAL_0
;
5906 case 'F': /* File-I/O request. */
5907 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5908 rs
->ctrlc_pending_p
= 0;
5910 case 'T': case 'S': case 'X': case 'W':
5912 struct stop_reply
*stop_reply
5913 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5916 event_ptid
= process_stop_reply (stop_reply
, status
);
5919 case 'O': /* Console output. */
5920 remote_console_output (buf
+ 1);
5922 /* The target didn't really stop; keep waiting. */
5923 rs
->waiting_for_stop_reply
= 1;
5927 if (last_sent_signal
!= GDB_SIGNAL_0
)
5929 /* Zero length reply means that we tried 'S' or 'C' and the
5930 remote system doesn't support it. */
5931 target_terminal_ours_for_output ();
5933 ("Can't send signals to this remote system. %s not sent.\n",
5934 gdb_signal_to_name (last_sent_signal
));
5935 last_sent_signal
= GDB_SIGNAL_0
;
5936 target_terminal_inferior ();
5938 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5939 putpkt ((char *) buf
);
5941 /* We just told the target to resume, so a stop reply is in
5943 rs
->waiting_for_stop_reply
= 1;
5946 /* else fallthrough */
5948 warning (_("Invalid remote reply: %s"), buf
);
5950 rs
->waiting_for_stop_reply
= 1;
5954 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5956 /* Nothing interesting happened. If we're doing a non-blocking
5957 poll, we're done. Otherwise, go back to waiting. */
5958 if (options
& TARGET_WNOHANG
)
5959 return minus_one_ptid
;
5963 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5964 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5966 if (!ptid_equal (event_ptid
, null_ptid
))
5967 record_currthread (event_ptid
);
5969 event_ptid
= inferior_ptid
;
5972 /* A process exit. Invalidate our notion of current thread. */
5973 record_currthread (minus_one_ptid
);
5978 /* Wait until the remote machine stops, then return, storing status in
5979 STATUS just as `wait' would. */
5982 remote_wait (struct target_ops
*ops
,
5983 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5988 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5990 event_ptid
= remote_wait_as (ptid
, status
, options
);
5992 if (target_can_async_p ())
5994 /* If there are are events left in the queue tell the event loop
5996 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5997 mark_async_event_handler (remote_async_inferior_event_token
);
6003 /* Fetch a single register using a 'p' packet. */
6006 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6008 struct remote_state
*rs
= get_remote_state ();
6010 char regp
[MAX_REGISTER_SIZE
];
6013 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6016 if (reg
->pnum
== -1)
6021 p
+= hexnumstr (p
, reg
->pnum
);
6024 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6028 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6032 case PACKET_UNKNOWN
:
6035 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6036 gdbarch_register_name (get_regcache_arch (regcache
),
6041 /* If this register is unfetchable, tell the regcache. */
6044 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6048 /* Otherwise, parse and supply the value. */
6054 error (_("fetch_register_using_p: early buf termination"));
6056 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6059 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6063 /* Fetch the registers included in the target's 'g' packet. */
6066 send_g_packet (void)
6068 struct remote_state
*rs
= get_remote_state ();
6071 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6072 remote_send (&rs
->buf
, &rs
->buf_size
);
6074 /* We can get out of synch in various cases. If the first character
6075 in the buffer is not a hex character, assume that has happened
6076 and try to fetch another packet to read. */
6077 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6078 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6079 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6080 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6083 fprintf_unfiltered (gdb_stdlog
,
6084 "Bad register packet; fetching a new packet\n");
6085 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6088 buf_len
= strlen (rs
->buf
);
6090 /* Sanity check the received packet. */
6091 if (buf_len
% 2 != 0)
6092 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6098 process_g_packet (struct regcache
*regcache
)
6100 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6101 struct remote_state
*rs
= get_remote_state ();
6102 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6107 buf_len
= strlen (rs
->buf
);
6109 /* Further sanity checks, with knowledge of the architecture. */
6110 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6111 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6113 /* Save the size of the packet sent to us by the target. It is used
6114 as a heuristic when determining the max size of packets that the
6115 target can safely receive. */
6116 if (rsa
->actual_register_packet_size
== 0)
6117 rsa
->actual_register_packet_size
= buf_len
;
6119 /* If this is smaller than we guessed the 'g' packet would be,
6120 update our records. A 'g' reply that doesn't include a register's
6121 value implies either that the register is not available, or that
6122 the 'p' packet must be used. */
6123 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6125 rsa
->sizeof_g_packet
= buf_len
/ 2;
6127 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6129 if (rsa
->regs
[i
].pnum
== -1)
6132 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6133 rsa
->regs
[i
].in_g_packet
= 0;
6135 rsa
->regs
[i
].in_g_packet
= 1;
6139 regs
= alloca (rsa
->sizeof_g_packet
);
6141 /* Unimplemented registers read as all bits zero. */
6142 memset (regs
, 0, rsa
->sizeof_g_packet
);
6144 /* Reply describes registers byte by byte, each byte encoded as two
6145 hex characters. Suck them all up, then supply them to the
6146 register cacheing/storage mechanism. */
6149 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6151 if (p
[0] == 0 || p
[1] == 0)
6152 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6153 internal_error (__FILE__
, __LINE__
,
6154 _("unexpected end of 'g' packet reply"));
6156 if (p
[0] == 'x' && p
[1] == 'x')
6157 regs
[i
] = 0; /* 'x' */
6159 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6163 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6165 struct packet_reg
*r
= &rsa
->regs
[i
];
6169 if (r
->offset
* 2 >= strlen (rs
->buf
))
6170 /* This shouldn't happen - we adjusted in_g_packet above. */
6171 internal_error (__FILE__
, __LINE__
,
6172 _("unexpected end of 'g' packet reply"));
6173 else if (rs
->buf
[r
->offset
* 2] == 'x')
6175 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6176 /* The register isn't available, mark it as such (at
6177 the same time setting the value to zero). */
6178 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6181 regcache_raw_supply (regcache
, r
->regnum
,
6188 fetch_registers_using_g (struct regcache
*regcache
)
6191 process_g_packet (regcache
);
6194 /* Make the remote selected traceframe match GDB's selected
6198 set_remote_traceframe (void)
6202 if (remote_traceframe_number
== get_traceframe_number ())
6205 /* Avoid recursion, remote_trace_find calls us again. */
6206 remote_traceframe_number
= get_traceframe_number ();
6208 newnum
= target_trace_find (tfind_number
,
6209 get_traceframe_number (), 0, 0, NULL
);
6211 /* Should not happen. If it does, all bets are off. */
6212 if (newnum
!= get_traceframe_number ())
6213 warning (_("could not set remote traceframe"));
6217 remote_fetch_registers (struct target_ops
*ops
,
6218 struct regcache
*regcache
, int regnum
)
6220 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6223 set_remote_traceframe ();
6224 set_general_thread (inferior_ptid
);
6228 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6230 gdb_assert (reg
!= NULL
);
6232 /* If this register might be in the 'g' packet, try that first -
6233 we are likely to read more than one register. If this is the
6234 first 'g' packet, we might be overly optimistic about its
6235 contents, so fall back to 'p'. */
6236 if (reg
->in_g_packet
)
6238 fetch_registers_using_g (regcache
);
6239 if (reg
->in_g_packet
)
6243 if (fetch_register_using_p (regcache
, reg
))
6246 /* This register is not available. */
6247 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6252 fetch_registers_using_g (regcache
);
6254 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6255 if (!rsa
->regs
[i
].in_g_packet
)
6256 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6258 /* This register is not available. */
6259 regcache_raw_supply (regcache
, i
, NULL
);
6263 /* Prepare to store registers. Since we may send them all (using a
6264 'G' request), we have to read out the ones we don't want to change
6268 remote_prepare_to_store (struct regcache
*regcache
)
6270 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6272 gdb_byte buf
[MAX_REGISTER_SIZE
];
6274 /* Make sure the entire registers array is valid. */
6275 switch (remote_protocol_packets
[PACKET_P
].support
)
6277 case PACKET_DISABLE
:
6278 case PACKET_SUPPORT_UNKNOWN
:
6279 /* Make sure all the necessary registers are cached. */
6280 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6281 if (rsa
->regs
[i
].in_g_packet
)
6282 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6289 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6290 packet was not recognized. */
6293 store_register_using_P (const struct regcache
*regcache
,
6294 struct packet_reg
*reg
)
6296 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6297 struct remote_state
*rs
= get_remote_state ();
6298 /* Try storing a single register. */
6299 char *buf
= rs
->buf
;
6300 gdb_byte regp
[MAX_REGISTER_SIZE
];
6303 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6306 if (reg
->pnum
== -1)
6309 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6310 p
= buf
+ strlen (buf
);
6311 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6312 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6314 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6316 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6321 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6322 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6323 case PACKET_UNKNOWN
:
6326 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6330 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6331 contents of the register cache buffer. FIXME: ignores errors. */
6334 store_registers_using_G (const struct regcache
*regcache
)
6336 struct remote_state
*rs
= get_remote_state ();
6337 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6341 /* Extract all the registers in the regcache copying them into a
6346 regs
= alloca (rsa
->sizeof_g_packet
);
6347 memset (regs
, 0, rsa
->sizeof_g_packet
);
6348 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6350 struct packet_reg
*r
= &rsa
->regs
[i
];
6353 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6357 /* Command describes registers byte by byte,
6358 each byte encoded as two hex characters. */
6361 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6363 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6365 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6366 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6367 error (_("Could not write registers; remote failure reply '%s'"),
6371 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6372 of the register cache buffer. FIXME: ignores errors. */
6375 remote_store_registers (struct target_ops
*ops
,
6376 struct regcache
*regcache
, int regnum
)
6378 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6381 set_remote_traceframe ();
6382 set_general_thread (inferior_ptid
);
6386 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6388 gdb_assert (reg
!= NULL
);
6390 /* Always prefer to store registers using the 'P' packet if
6391 possible; we often change only a small number of registers.
6392 Sometimes we change a larger number; we'd need help from a
6393 higher layer to know to use 'G'. */
6394 if (store_register_using_P (regcache
, reg
))
6397 /* For now, don't complain if we have no way to write the
6398 register. GDB loses track of unavailable registers too
6399 easily. Some day, this may be an error. We don't have
6400 any way to read the register, either... */
6401 if (!reg
->in_g_packet
)
6404 store_registers_using_G (regcache
);
6408 store_registers_using_G (regcache
);
6410 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6411 if (!rsa
->regs
[i
].in_g_packet
)
6412 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6413 /* See above for why we do not issue an error here. */
6418 /* Return the number of hex digits in num. */
6421 hexnumlen (ULONGEST num
)
6425 for (i
= 0; num
!= 0; i
++)
6431 /* Set BUF to the minimum number of hex digits representing NUM. */
6434 hexnumstr (char *buf
, ULONGEST num
)
6436 int len
= hexnumlen (num
);
6438 return hexnumnstr (buf
, num
, len
);
6442 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6445 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6451 for (i
= width
- 1; i
>= 0; i
--)
6453 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6460 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6463 remote_address_masked (CORE_ADDR addr
)
6465 unsigned int address_size
= remote_address_size
;
6467 /* If "remoteaddresssize" was not set, default to target address size. */
6469 address_size
= gdbarch_addr_bit (target_gdbarch ());
6471 if (address_size
> 0
6472 && address_size
< (sizeof (ULONGEST
) * 8))
6474 /* Only create a mask when that mask can safely be constructed
6475 in a ULONGEST variable. */
6478 mask
= (mask
<< address_size
) - 1;
6484 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6485 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6486 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6487 (which may be more than *OUT_LEN due to escape characters). The
6488 total number of bytes in the output buffer will be at most
6492 remote_escape_output (const gdb_byte
*buffer
, int len
,
6493 gdb_byte
*out_buf
, int *out_len
,
6496 int input_index
, output_index
;
6499 for (input_index
= 0; input_index
< len
; input_index
++)
6501 gdb_byte b
= buffer
[input_index
];
6503 if (b
== '$' || b
== '#' || b
== '}')
6505 /* These must be escaped. */
6506 if (output_index
+ 2 > out_maxlen
)
6508 out_buf
[output_index
++] = '}';
6509 out_buf
[output_index
++] = b
^ 0x20;
6513 if (output_index
+ 1 > out_maxlen
)
6515 out_buf
[output_index
++] = b
;
6519 *out_len
= input_index
;
6520 return output_index
;
6523 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6524 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6525 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6527 This function reverses remote_escape_output. It allows more
6528 escaped characters than that function does, in particular because
6529 '*' must be escaped to avoid the run-length encoding processing
6530 in reading packets. */
6533 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6534 gdb_byte
*out_buf
, int out_maxlen
)
6536 int input_index
, output_index
;
6541 for (input_index
= 0; input_index
< len
; input_index
++)
6543 gdb_byte b
= buffer
[input_index
];
6545 if (output_index
+ 1 > out_maxlen
)
6547 warning (_("Received too much data from remote target;"
6548 " ignoring overflow."));
6549 return output_index
;
6554 out_buf
[output_index
++] = b
^ 0x20;
6560 out_buf
[output_index
++] = b
;
6564 error (_("Unmatched escape character in target response."));
6566 return output_index
;
6569 /* Determine whether the remote target supports binary downloading.
6570 This is accomplished by sending a no-op memory write of zero length
6571 to the target at the specified address. It does not suffice to send
6572 the whole packet, since many stubs strip the eighth bit and
6573 subsequently compute a wrong checksum, which causes real havoc with
6576 NOTE: This can still lose if the serial line is not eight-bit
6577 clean. In cases like this, the user should clear "remote
6581 check_binary_download (CORE_ADDR addr
)
6583 struct remote_state
*rs
= get_remote_state ();
6585 switch (remote_protocol_packets
[PACKET_X
].support
)
6587 case PACKET_DISABLE
:
6591 case PACKET_SUPPORT_UNKNOWN
:
6597 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6599 p
+= hexnumstr (p
, (ULONGEST
) 0);
6603 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6604 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6606 if (rs
->buf
[0] == '\0')
6609 fprintf_unfiltered (gdb_stdlog
,
6610 "binary downloading NOT "
6611 "supported by target\n");
6612 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6617 fprintf_unfiltered (gdb_stdlog
,
6618 "binary downloading supported by target\n");
6619 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6626 /* Write memory data directly to the remote machine.
6627 This does not inform the data cache; the data cache uses this.
6628 HEADER is the starting part of the packet.
6629 MEMADDR is the address in the remote memory space.
6630 MYADDR is the address of the buffer in our space.
6631 LEN is the number of bytes.
6632 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6633 should send data as binary ('X'), or hex-encoded ('M').
6635 The function creates packet of the form
6636 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6638 where encoding of <DATA> is termined by PACKET_FORMAT.
6640 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6643 Returns the number of bytes transferred, or 0 (setting errno) for
6644 error. Only transfer a single packet. */
6647 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6648 const gdb_byte
*myaddr
, ssize_t len
,
6649 char packet_format
, int use_length
)
6651 struct remote_state
*rs
= get_remote_state ();
6661 if (packet_format
!= 'X' && packet_format
!= 'M')
6662 internal_error (__FILE__
, __LINE__
,
6663 _("remote_write_bytes_aux: bad packet format"));
6668 payload_size
= get_memory_write_packet_size ();
6670 /* The packet buffer will be large enough for the payload;
6671 get_memory_packet_size ensures this. */
6674 /* Compute the size of the actual payload by subtracting out the
6675 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6677 payload_size
-= strlen ("$,:#NN");
6679 /* The comma won't be used. */
6681 header_length
= strlen (header
);
6682 payload_size
-= header_length
;
6683 payload_size
-= hexnumlen (memaddr
);
6685 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6687 strcat (rs
->buf
, header
);
6688 p
= rs
->buf
+ strlen (header
);
6690 /* Compute a best guess of the number of bytes actually transfered. */
6691 if (packet_format
== 'X')
6693 /* Best guess at number of bytes that will fit. */
6694 todo
= min (len
, payload_size
);
6696 payload_size
-= hexnumlen (todo
);
6697 todo
= min (todo
, payload_size
);
6701 /* Num bytes that will fit. */
6702 todo
= min (len
, payload_size
/ 2);
6704 payload_size
-= hexnumlen (todo
);
6705 todo
= min (todo
, payload_size
/ 2);
6709 internal_error (__FILE__
, __LINE__
,
6710 _("minimum packet size too small to write data"));
6712 /* If we already need another packet, then try to align the end
6713 of this packet to a useful boundary. */
6714 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6715 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6717 /* Append "<memaddr>". */
6718 memaddr
= remote_address_masked (memaddr
);
6719 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6726 /* Append <len>. Retain the location/size of <len>. It may need to
6727 be adjusted once the packet body has been created. */
6729 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6737 /* Append the packet body. */
6738 if (packet_format
== 'X')
6740 /* Binary mode. Send target system values byte by byte, in
6741 increasing byte addresses. Only escape certain critical
6743 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6746 /* If not all TODO bytes fit, then we'll need another packet. Make
6747 a second try to keep the end of the packet aligned. Don't do
6748 this if the packet is tiny. */
6749 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6753 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6755 if (new_nr_bytes
!= nr_bytes
)
6756 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6761 p
+= payload_length
;
6762 if (use_length
&& nr_bytes
< todo
)
6764 /* Escape chars have filled up the buffer prematurely,
6765 and we have actually sent fewer bytes than planned.
6766 Fix-up the length field of the packet. Use the same
6767 number of characters as before. */
6768 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6769 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6774 /* Normal mode: Send target system values byte by byte, in
6775 increasing byte addresses. Each byte is encoded as a two hex
6777 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6781 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6782 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6784 if (rs
->buf
[0] == 'E')
6786 /* There is no correspondance between what the remote protocol
6787 uses for errors and errno codes. We would like a cleaner way
6788 of representing errors (big enough to include errno codes,
6789 bfd_error codes, and others). But for now just return EIO. */
6794 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6795 fewer bytes than we'd planned. */
6799 /* Write memory data directly to the remote machine.
6800 This does not inform the data cache; the data cache uses this.
6801 MEMADDR is the address in the remote memory space.
6802 MYADDR is the address of the buffer in our space.
6803 LEN is the number of bytes.
6805 Returns number of bytes transferred, or 0 (setting errno) for
6806 error. Only transfer a single packet. */
6809 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6811 char *packet_format
= 0;
6813 /* Check whether the target supports binary download. */
6814 check_binary_download (memaddr
);
6816 switch (remote_protocol_packets
[PACKET_X
].support
)
6819 packet_format
= "X";
6821 case PACKET_DISABLE
:
6822 packet_format
= "M";
6824 case PACKET_SUPPORT_UNKNOWN
:
6825 internal_error (__FILE__
, __LINE__
,
6826 _("remote_write_bytes: bad internal state"));
6828 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6831 return remote_write_bytes_aux (packet_format
,
6832 memaddr
, myaddr
, len
, packet_format
[0], 1);
6835 /* Read memory data directly from the remote machine.
6836 This does not use the data cache; the data cache uses this.
6837 MEMADDR is the address in the remote memory space.
6838 MYADDR is the address of the buffer in our space.
6839 LEN is the number of bytes.
6841 Returns number of bytes transferred, or 0 for error. */
6844 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6846 struct remote_state
*rs
= get_remote_state ();
6847 int max_buf_size
; /* Max size of packet output buffer. */
6855 max_buf_size
= get_memory_read_packet_size ();
6856 /* The packet buffer will be large enough for the payload;
6857 get_memory_packet_size ensures this. */
6859 /* Number if bytes that will fit. */
6860 todo
= min (len
, max_buf_size
/ 2);
6862 /* Construct "m"<memaddr>","<len>". */
6863 memaddr
= remote_address_masked (memaddr
);
6866 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6868 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6871 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6872 if (rs
->buf
[0] == 'E'
6873 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6874 && rs
->buf
[3] == '\0')
6876 /* There is no correspondance between what the remote protocol
6877 uses for errors and errno codes. We would like a cleaner way
6878 of representing errors (big enough to include errno codes,
6879 bfd_error codes, and others). But for now just return
6884 /* Reply describes memory byte by byte, each byte encoded as two hex
6887 i
= hex2bin (p
, myaddr
, todo
);
6888 /* Return what we have. Let higher layers handle partial reads. */
6893 /* Read or write LEN bytes from inferior memory at MEMADDR,
6894 transferring to or from debugger address BUFFER. Write to inferior
6895 if SHOULD_WRITE is nonzero. Returns length of data written or
6896 read; 0 for error. TARGET is unused. */
6899 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6900 int should_write
, struct mem_attrib
*attrib
,
6901 struct target_ops
*target
)
6905 set_remote_traceframe ();
6906 set_general_thread (inferior_ptid
);
6909 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6911 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6916 /* Sends a packet with content determined by the printf format string
6917 FORMAT and the remaining arguments, then gets the reply. Returns
6918 whether the packet was a success, a failure, or unknown. */
6920 static enum packet_result
6921 remote_send_printf (const char *format
, ...)
6923 struct remote_state
*rs
= get_remote_state ();
6924 int max_size
= get_remote_packet_size ();
6927 va_start (ap
, format
);
6930 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6931 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6933 if (putpkt (rs
->buf
) < 0)
6934 error (_("Communication problem with target."));
6937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6939 return packet_check_result (rs
->buf
);
6943 restore_remote_timeout (void *p
)
6945 int value
= *(int *)p
;
6947 remote_timeout
= value
;
6950 /* Flash writing can take quite some time. We'll set
6951 effectively infinite timeout for flash operations.
6952 In future, we'll need to decide on a better approach. */
6953 static const int remote_flash_timeout
= 1000;
6956 remote_flash_erase (struct target_ops
*ops
,
6957 ULONGEST address
, LONGEST length
)
6959 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6960 int saved_remote_timeout
= remote_timeout
;
6961 enum packet_result ret
;
6962 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6963 &saved_remote_timeout
);
6965 remote_timeout
= remote_flash_timeout
;
6967 ret
= remote_send_printf ("vFlashErase:%s,%s",
6968 phex (address
, addr_size
),
6972 case PACKET_UNKNOWN
:
6973 error (_("Remote target does not support flash erase"));
6975 error (_("Error erasing flash with vFlashErase packet"));
6980 do_cleanups (back_to
);
6984 remote_flash_write (struct target_ops
*ops
,
6985 ULONGEST address
, LONGEST length
,
6986 const gdb_byte
*data
)
6988 int saved_remote_timeout
= remote_timeout
;
6990 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6991 &saved_remote_timeout
);
6993 remote_timeout
= remote_flash_timeout
;
6994 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6995 do_cleanups (back_to
);
7001 remote_flash_done (struct target_ops
*ops
)
7003 int saved_remote_timeout
= remote_timeout
;
7005 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7006 &saved_remote_timeout
);
7008 remote_timeout
= remote_flash_timeout
;
7009 ret
= remote_send_printf ("vFlashDone");
7010 do_cleanups (back_to
);
7014 case PACKET_UNKNOWN
:
7015 error (_("Remote target does not support vFlashDone"));
7017 error (_("Error finishing flash operation"));
7024 remote_files_info (struct target_ops
*ignore
)
7026 puts_filtered ("Debugging a target over a serial line.\n");
7029 /* Stuff for dealing with the packets which are part of this protocol.
7030 See comment at top of file for details. */
7032 /* Read a single character from the remote end. */
7035 readchar (int timeout
)
7039 ch
= serial_readchar (remote_desc
, timeout
);
7044 switch ((enum serial_rc
) ch
)
7048 error (_("Remote connection closed"));
7052 perror_with_name (_("Remote communication error. "
7053 "Target disconnected."));
7055 case SERIAL_TIMEOUT
:
7061 /* Send the command in *BUF to the remote machine, and read the reply
7062 into *BUF. Report an error if we get an error reply. Resize
7063 *BUF using xrealloc if necessary to hold the result, and update
7067 remote_send (char **buf
,
7071 getpkt (buf
, sizeof_buf
, 0);
7073 if ((*buf
)[0] == 'E')
7074 error (_("Remote failure reply: %s"), *buf
);
7077 /* Return a pointer to an xmalloc'ed string representing an escaped
7078 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7079 etc. The caller is responsible for releasing the returned
7083 escape_buffer (const char *buf
, int n
)
7085 struct cleanup
*old_chain
;
7086 struct ui_file
*stb
;
7089 stb
= mem_fileopen ();
7090 old_chain
= make_cleanup_ui_file_delete (stb
);
7092 fputstrn_unfiltered (buf
, n
, 0, stb
);
7093 str
= ui_file_xstrdup (stb
, NULL
);
7094 do_cleanups (old_chain
);
7098 /* Display a null-terminated packet on stdout, for debugging, using C
7102 print_packet (char *buf
)
7104 puts_filtered ("\"");
7105 fputstr_filtered (buf
, '"', gdb_stdout
);
7106 puts_filtered ("\"");
7112 return putpkt_binary (buf
, strlen (buf
));
7115 /* Send a packet to the remote machine, with error checking. The data
7116 of the packet is in BUF. The string in BUF can be at most
7117 get_remote_packet_size () - 5 to account for the $, # and checksum,
7118 and for a possible /0 if we are debugging (remote_debug) and want
7119 to print the sent packet as a string. */
7122 putpkt_binary (char *buf
, int cnt
)
7124 struct remote_state
*rs
= get_remote_state ();
7126 unsigned char csum
= 0;
7127 char *buf2
= alloca (cnt
+ 6);
7134 /* Catch cases like trying to read memory or listing threads while
7135 we're waiting for a stop reply. The remote server wouldn't be
7136 ready to handle this request, so we'd hang and timeout. We don't
7137 have to worry about this in synchronous mode, because in that
7138 case it's not possible to issue a command while the target is
7139 running. This is not a problem in non-stop mode, because in that
7140 case, the stub is always ready to process serial input. */
7141 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7142 error (_("Cannot execute this command while the target is running."));
7144 /* We're sending out a new packet. Make sure we don't look at a
7145 stale cached response. */
7146 rs
->cached_wait_status
= 0;
7148 /* Copy the packet into buffer BUF2, encapsulating it
7149 and giving it a checksum. */
7154 for (i
= 0; i
< cnt
; i
++)
7160 *p
++ = tohex ((csum
>> 4) & 0xf);
7161 *p
++ = tohex (csum
& 0xf);
7163 /* Send it over and over until we get a positive ack. */
7167 int started_error_output
= 0;
7171 struct cleanup
*old_chain
;
7175 str
= escape_buffer (buf2
, p
- buf2
);
7176 old_chain
= make_cleanup (xfree
, str
);
7177 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7178 gdb_flush (gdb_stdlog
);
7179 do_cleanups (old_chain
);
7181 if (serial_write (remote_desc
, buf2
, p
- buf2
))
7182 perror_with_name (_("putpkt: write failed"));
7184 /* If this is a no acks version of the remote protocol, send the
7185 packet and move on. */
7189 /* Read until either a timeout occurs (-2) or '+' is read.
7190 Handle any notification that arrives in the mean time. */
7193 ch
= readchar (remote_timeout
);
7201 case SERIAL_TIMEOUT
:
7204 if (started_error_output
)
7206 putchar_unfiltered ('\n');
7207 started_error_output
= 0;
7216 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7220 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7222 case SERIAL_TIMEOUT
:
7226 break; /* Retransmit buffer. */
7230 fprintf_unfiltered (gdb_stdlog
,
7231 "Packet instead of Ack, ignoring it\n");
7232 /* It's probably an old response sent because an ACK
7233 was lost. Gobble up the packet and ack it so it
7234 doesn't get retransmitted when we resend this
7237 serial_write (remote_desc
, "+", 1);
7238 continue; /* Now, go look for +. */
7245 /* If we got a notification, handle it, and go back to looking
7247 /* We've found the start of a notification. Now
7248 collect the data. */
7249 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7254 struct cleanup
*old_chain
;
7257 str
= escape_buffer (rs
->buf
, val
);
7258 old_chain
= make_cleanup (xfree
, str
);
7259 fprintf_unfiltered (gdb_stdlog
,
7260 " Notification received: %s\n",
7262 do_cleanups (old_chain
);
7264 handle_notification (rs
->buf
);
7265 /* We're in sync now, rewait for the ack. */
7272 if (!started_error_output
)
7274 started_error_output
= 1;
7275 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7277 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7278 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7287 if (!started_error_output
)
7289 started_error_output
= 1;
7290 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7292 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7296 break; /* Here to retransmit. */
7300 /* This is wrong. If doing a long backtrace, the user should be
7301 able to get out next time we call QUIT, without anything as
7302 violent as interrupt_query. If we want to provide a way out of
7303 here without getting to the next QUIT, it should be based on
7304 hitting ^C twice as in remote_wait. */
7315 /* Come here after finding the start of a frame when we expected an
7316 ack. Do our best to discard the rest of this packet. */
7325 c
= readchar (remote_timeout
);
7328 case SERIAL_TIMEOUT
:
7329 /* Nothing we can do. */
7332 /* Discard the two bytes of checksum and stop. */
7333 c
= readchar (remote_timeout
);
7335 c
= readchar (remote_timeout
);
7338 case '*': /* Run length encoding. */
7339 /* Discard the repeat count. */
7340 c
= readchar (remote_timeout
);
7345 /* A regular character. */
7351 /* Come here after finding the start of the frame. Collect the rest
7352 into *BUF, verifying the checksum, length, and handling run-length
7353 compression. NUL terminate the buffer. If there is not enough room,
7354 expand *BUF using xrealloc.
7356 Returns -1 on error, number of characters in buffer (ignoring the
7357 trailing NULL) on success. (could be extended to return one of the
7358 SERIAL status indications). */
7361 read_frame (char **buf_p
,
7368 struct remote_state
*rs
= get_remote_state ();
7375 c
= readchar (remote_timeout
);
7378 case SERIAL_TIMEOUT
:
7380 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7384 fputs_filtered ("Saw new packet start in middle of old one\n",
7386 return -1; /* Start a new packet, count retries. */
7389 unsigned char pktcsum
;
7395 check_0
= readchar (remote_timeout
);
7397 check_1
= readchar (remote_timeout
);
7399 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7402 fputs_filtered ("Timeout in checksum, retrying\n",
7406 else if (check_0
< 0 || check_1
< 0)
7409 fputs_filtered ("Communication error in checksum\n",
7414 /* Don't recompute the checksum; with no ack packets we
7415 don't have any way to indicate a packet retransmission
7420 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7421 if (csum
== pktcsum
)
7426 struct cleanup
*old_chain
;
7429 str
= escape_buffer (buf
, bc
);
7430 old_chain
= make_cleanup (xfree
, str
);
7431 fprintf_unfiltered (gdb_stdlog
,
7432 "Bad checksum, sentsum=0x%x, "
7433 "csum=0x%x, buf=%s\n",
7434 pktcsum
, csum
, str
);
7435 do_cleanups (old_chain
);
7437 /* Number of characters in buffer ignoring trailing
7441 case '*': /* Run length encoding. */
7446 c
= readchar (remote_timeout
);
7448 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7450 /* The character before ``*'' is repeated. */
7452 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7454 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7456 /* Make some more room in the buffer. */
7457 *sizeof_buf
+= repeat
;
7458 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7462 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7468 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7472 if (bc
>= *sizeof_buf
- 1)
7474 /* Make some more room in the buffer. */
7476 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7487 /* Read a packet from the remote machine, with error checking, and
7488 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7489 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7490 rather than timing out; this is used (in synchronous mode) to wait
7491 for a target that is is executing user code to stop. */
7492 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7493 don't have to change all the calls to getpkt to deal with the
7494 return value, because at the moment I don't know what the right
7495 thing to do it for those. */
7503 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7507 /* Read a packet from the remote machine, with error checking, and
7508 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7509 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7510 rather than timing out; this is used (in synchronous mode) to wait
7511 for a target that is is executing user code to stop. If FOREVER ==
7512 0, this function is allowed to time out gracefully and return an
7513 indication of this to the caller. Otherwise return the number of
7514 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7515 enough reason to return to the caller. *IS_NOTIF is an output
7516 boolean that indicates whether *BUF holds a notification or not
7517 (a regular packet). */
7520 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7521 int expecting_notif
, int *is_notif
)
7523 struct remote_state
*rs
= get_remote_state ();
7529 /* We're reading a new response. Make sure we don't look at a
7530 previously cached response. */
7531 rs
->cached_wait_status
= 0;
7533 strcpy (*buf
, "timeout");
7536 timeout
= watchdog
> 0 ? watchdog
: -1;
7537 else if (expecting_notif
)
7538 timeout
= 0; /* There should already be a char in the buffer. If
7541 timeout
= remote_timeout
;
7545 /* Process any number of notifications, and then return when
7549 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7551 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7553 /* This can loop forever if the remote side sends us
7554 characters continuously, but if it pauses, we'll get
7555 SERIAL_TIMEOUT from readchar because of timeout. Then
7556 we'll count that as a retry.
7558 Note that even when forever is set, we will only wait
7559 forever prior to the start of a packet. After that, we
7560 expect characters to arrive at a brisk pace. They should
7561 show up within remote_timeout intervals. */
7563 c
= readchar (timeout
);
7564 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7566 if (c
== SERIAL_TIMEOUT
)
7568 if (expecting_notif
)
7569 return -1; /* Don't complain, it's normal to not get
7570 anything in this case. */
7572 if (forever
) /* Watchdog went off? Kill the target. */
7576 error (_("Watchdog timeout has expired. Target detached."));
7579 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7583 /* We've found the start of a packet or notification.
7584 Now collect the data. */
7585 val
= read_frame (buf
, sizeof_buf
);
7590 serial_write (remote_desc
, "-", 1);
7593 if (tries
> MAX_TRIES
)
7595 /* We have tried hard enough, and just can't receive the
7596 packet/notification. Give up. */
7597 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7599 /* Skip the ack char if we're in no-ack mode. */
7600 if (!rs
->noack_mode
)
7601 serial_write (remote_desc
, "+", 1);
7605 /* If we got an ordinary packet, return that to our caller. */
7610 struct cleanup
*old_chain
;
7613 str
= escape_buffer (*buf
, val
);
7614 old_chain
= make_cleanup (xfree
, str
);
7615 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7616 do_cleanups (old_chain
);
7619 /* Skip the ack char if we're in no-ack mode. */
7620 if (!rs
->noack_mode
)
7621 serial_write (remote_desc
, "+", 1);
7622 if (is_notif
!= NULL
)
7627 /* If we got a notification, handle it, and go back to looking
7631 gdb_assert (c
== '%');
7635 struct cleanup
*old_chain
;
7638 str
= escape_buffer (*buf
, val
);
7639 old_chain
= make_cleanup (xfree
, str
);
7640 fprintf_unfiltered (gdb_stdlog
,
7641 " Notification received: %s\n",
7643 do_cleanups (old_chain
);
7645 if (is_notif
!= NULL
)
7648 handle_notification (*buf
);
7650 /* Notifications require no acknowledgement. */
7652 if (expecting_notif
)
7659 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7661 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7665 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7668 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7673 /* A helper function that just calls putpkt; for type correctness. */
7676 putpkt_for_catch_errors (void *arg
)
7678 return putpkt (arg
);
7682 remote_kill (struct target_ops
*ops
)
7684 /* Use catch_errors so the user can quit from gdb even when we
7685 aren't on speaking terms with the remote system. */
7686 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7688 /* Don't wait for it to die. I'm not really sure it matters whether
7689 we do or not. For the existing stubs, kill is a noop. */
7690 target_mourn_inferior ();
7694 remote_vkill (int pid
, struct remote_state
*rs
)
7696 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7699 /* Tell the remote target to detach. */
7700 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7704 if (packet_ok (rs
->buf
,
7705 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7707 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7714 extended_remote_kill (struct target_ops
*ops
)
7717 int pid
= ptid_get_pid (inferior_ptid
);
7718 struct remote_state
*rs
= get_remote_state ();
7720 res
= remote_vkill (pid
, rs
);
7721 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7723 /* Don't try 'k' on a multi-process aware stub -- it has no way
7724 to specify the pid. */
7728 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7729 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7732 /* Don't wait for it to die. I'm not really sure it matters whether
7733 we do or not. For the existing stubs, kill is a noop. */
7739 error (_("Can't kill process"));
7741 target_mourn_inferior ();
7745 remote_mourn (struct target_ops
*ops
)
7747 remote_mourn_1 (ops
);
7750 /* Worker function for remote_mourn. */
7752 remote_mourn_1 (struct target_ops
*target
)
7754 unpush_target (target
);
7756 /* remote_close takes care of doing most of the clean up. */
7757 generic_mourn_inferior ();
7761 extended_remote_mourn_1 (struct target_ops
*target
)
7763 struct remote_state
*rs
= get_remote_state ();
7765 /* In case we got here due to an error, but we're going to stay
7767 rs
->waiting_for_stop_reply
= 0;
7769 /* If the current general thread belonged to the process we just
7770 detached from or has exited, the remote side current general
7771 thread becomes undefined. Considering a case like this:
7773 - We just got here due to a detach.
7774 - The process that we're detaching from happens to immediately
7775 report a global breakpoint being hit in non-stop mode, in the
7776 same thread we had selected before.
7777 - GDB attaches to this process again.
7778 - This event happens to be the next event we handle.
7780 GDB would consider that the current general thread didn't need to
7781 be set on the stub side (with Hg), since for all it knew,
7782 GENERAL_THREAD hadn't changed.
7784 Notice that although in all-stop mode, the remote server always
7785 sets the current thread to the thread reporting the stop event,
7786 that doesn't happen in non-stop mode; in non-stop, the stub *must
7787 not* change the current thread when reporting a breakpoint hit,
7788 due to the decoupling of event reporting and event handling.
7790 To keep things simple, we always invalidate our notion of the
7792 record_currthread (minus_one_ptid
);
7794 /* Unlike "target remote", we do not want to unpush the target; then
7795 the next time the user says "run", we won't be connected. */
7797 /* Call common code to mark the inferior as not running. */
7798 generic_mourn_inferior ();
7800 if (!have_inferiors ())
7802 if (!remote_multi_process_p (rs
))
7804 /* Check whether the target is running now - some remote stubs
7805 automatically restart after kill. */
7807 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7809 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7811 /* Assume that the target has been restarted. Set
7812 inferior_ptid so that bits of core GDB realizes
7813 there's something here, e.g., so that the user can
7814 say "kill" again. */
7815 inferior_ptid
= magic_null_ptid
;
7822 extended_remote_mourn (struct target_ops
*ops
)
7824 extended_remote_mourn_1 (ops
);
7828 extended_remote_supports_disable_randomization (void)
7830 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7835 extended_remote_disable_randomization (int val
)
7837 struct remote_state
*rs
= get_remote_state ();
7840 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7843 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7845 error (_("Target does not support QDisableRandomization."));
7846 if (strcmp (reply
, "OK") != 0)
7847 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7851 extended_remote_run (char *args
)
7853 struct remote_state
*rs
= get_remote_state ();
7856 /* If the user has disabled vRun support, or we have detected that
7857 support is not available, do not try it. */
7858 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7861 strcpy (rs
->buf
, "vRun;");
7862 len
= strlen (rs
->buf
);
7864 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7865 error (_("Remote file name too long for run packet"));
7866 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7868 gdb_assert (args
!= NULL
);
7871 struct cleanup
*back_to
;
7875 argv
= gdb_buildargv (args
);
7876 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7877 for (i
= 0; argv
[i
] != NULL
; i
++)
7879 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7880 error (_("Argument list too long for run packet"));
7881 rs
->buf
[len
++] = ';';
7882 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7884 do_cleanups (back_to
);
7887 rs
->buf
[len
++] = '\0';
7890 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7892 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7894 /* We have a wait response. All is well. */
7897 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7898 /* It wasn't disabled before, but it is now. */
7902 if (remote_exec_file
[0] == '\0')
7903 error (_("Running the default executable on the remote target failed; "
7904 "try \"set remote exec-file\"?"));
7906 error (_("Running \"%s\" on the remote target failed"),
7911 /* In the extended protocol we want to be able to do things like
7912 "run" and have them basically work as expected. So we need
7913 a special create_inferior function. We support changing the
7914 executable file and the command line arguments, but not the
7918 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7919 char **env
, int from_tty
)
7923 struct remote_state
*rs
= get_remote_state ();
7925 /* If running asynchronously, register the target file descriptor
7926 with the event loop. */
7927 if (target_can_async_p ())
7928 target_async (inferior_event_handler
, 0);
7930 /* Disable address space randomization if requested (and supported). */
7931 if (extended_remote_supports_disable_randomization ())
7932 extended_remote_disable_randomization (disable_randomization
);
7934 /* Now restart the remote server. */
7935 run_worked
= extended_remote_run (args
) != -1;
7938 /* vRun was not supported. Fail if we need it to do what the
7940 if (remote_exec_file
[0])
7941 error (_("Remote target does not support \"set remote exec-file\""));
7943 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7945 /* Fall back to "R". */
7946 extended_remote_restart ();
7949 if (!have_inferiors ())
7951 /* Clean up from the last time we ran, before we mark the target
7952 running again. This will mark breakpoints uninserted, and
7953 get_offsets may insert breakpoints. */
7954 init_thread_list ();
7955 init_wait_for_inferior ();
7958 /* vRun's success return is a stop reply. */
7959 stop_reply
= run_worked
? rs
->buf
: NULL
;
7960 add_current_inferior_and_thread (stop_reply
);
7962 /* Get updated offsets, if the stub uses qOffsets. */
7967 extended_remote_create_inferior (struct target_ops
*ops
,
7968 char *exec_file
, char *args
,
7969 char **env
, int from_tty
)
7971 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7975 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7976 the list of conditions (in agent expression bytecode format), if any, the
7977 target needs to evaluate. The output is placed into the packet buffer
7978 started from BUF and ended at BUF_END. */
7981 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7982 struct bp_target_info
*bp_tgt
, char *buf
,
7985 struct agent_expr
*aexpr
= NULL
;
7988 char *buf_start
= buf
;
7990 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7993 buf
+= strlen (buf
);
7994 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
7997 /* Send conditions to the target and free the vector. */
7999 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8002 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8003 buf
+= strlen (buf
);
8004 for (i
= 0; i
< aexpr
->len
; ++i
)
8005 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8009 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8014 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8015 struct bp_target_info
*bp_tgt
, char *buf
)
8017 struct agent_expr
*aexpr
= NULL
;
8020 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8023 buf
+= strlen (buf
);
8025 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8026 buf
+= strlen (buf
);
8028 /* Concatenate all the agent expressions that are commands into the
8031 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8034 sprintf (buf
, "X%x,", aexpr
->len
);
8035 buf
+= strlen (buf
);
8036 for (i
= 0; i
< aexpr
->len
; ++i
)
8037 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8041 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8044 /* Insert a breakpoint. On targets that have software breakpoint
8045 support, we ask the remote target to do the work; on targets
8046 which don't, we insert a traditional memory breakpoint. */
8049 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8050 struct bp_target_info
*bp_tgt
)
8052 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8053 If it succeeds, then set the support to PACKET_ENABLE. If it
8054 fails, and the user has explicitly requested the Z support then
8055 report an error, otherwise, mark it disabled and go on. */
8057 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8059 CORE_ADDR addr
= bp_tgt
->placed_address
;
8060 struct remote_state
*rs
;
8063 struct condition_list
*cond
= NULL
;
8065 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8067 rs
= get_remote_state ();
8069 endbuf
= rs
->buf
+ get_remote_packet_size ();
8074 addr
= (ULONGEST
) remote_address_masked (addr
);
8075 p
+= hexnumstr (p
, addr
);
8076 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8078 if (remote_supports_cond_breakpoints ())
8079 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8081 if (remote_can_run_breakpoint_commands ())
8082 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8085 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8087 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8092 bp_tgt
->placed_address
= addr
;
8093 bp_tgt
->placed_size
= bpsize
;
8095 case PACKET_UNKNOWN
:
8100 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8104 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8105 struct bp_target_info
*bp_tgt
)
8107 CORE_ADDR addr
= bp_tgt
->placed_address
;
8108 struct remote_state
*rs
= get_remote_state ();
8110 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8113 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8119 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8120 p
+= hexnumstr (p
, addr
);
8121 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8124 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8126 return (rs
->buf
[0] == 'E');
8129 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8133 watchpoint_to_Z_packet (int type
)
8138 return Z_PACKET_WRITE_WP
;
8141 return Z_PACKET_READ_WP
;
8144 return Z_PACKET_ACCESS_WP
;
8147 internal_error (__FILE__
, __LINE__
,
8148 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8153 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8154 struct expression
*cond
)
8156 struct remote_state
*rs
= get_remote_state ();
8157 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8159 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8161 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8164 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8165 p
= strchr (rs
->buf
, '\0');
8166 addr
= remote_address_masked (addr
);
8167 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8168 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8171 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8173 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8177 case PACKET_UNKNOWN
:
8182 internal_error (__FILE__
, __LINE__
,
8183 _("remote_insert_watchpoint: reached end of function"));
8187 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8188 CORE_ADDR start
, int length
)
8190 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8192 return diff
< length
;
8197 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8198 struct expression
*cond
)
8200 struct remote_state
*rs
= get_remote_state ();
8201 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8203 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8205 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8208 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8209 p
= strchr (rs
->buf
, '\0');
8210 addr
= remote_address_masked (addr
);
8211 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8212 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8214 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8216 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8219 case PACKET_UNKNOWN
:
8224 internal_error (__FILE__
, __LINE__
,
8225 _("remote_remove_watchpoint: reached end of function"));
8229 int remote_hw_watchpoint_limit
= -1;
8230 int remote_hw_watchpoint_length_limit
= -1;
8231 int remote_hw_breakpoint_limit
= -1;
8234 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8236 if (remote_hw_watchpoint_length_limit
== 0)
8238 else if (remote_hw_watchpoint_length_limit
< 0)
8240 else if (len
<= remote_hw_watchpoint_length_limit
)
8247 remote_check_watch_resources (int type
, int cnt
, int ot
)
8249 if (type
== bp_hardware_breakpoint
)
8251 if (remote_hw_breakpoint_limit
== 0)
8253 else if (remote_hw_breakpoint_limit
< 0)
8255 else if (cnt
<= remote_hw_breakpoint_limit
)
8260 if (remote_hw_watchpoint_limit
== 0)
8262 else if (remote_hw_watchpoint_limit
< 0)
8266 else if (cnt
<= remote_hw_watchpoint_limit
)
8273 remote_stopped_by_watchpoint (void)
8275 return remote_stopped_by_watchpoint_p
;
8279 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8283 if (remote_stopped_by_watchpoint ())
8285 *addr_p
= remote_watch_data_address
;
8294 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8295 struct bp_target_info
*bp_tgt
)
8298 struct remote_state
*rs
;
8302 /* The length field should be set to the size of a breakpoint
8303 instruction, even though we aren't inserting one ourselves. */
8305 gdbarch_remote_breakpoint_from_pc
8306 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8308 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8311 rs
= get_remote_state ();
8313 endbuf
= rs
->buf
+ get_remote_packet_size ();
8319 addr
= remote_address_masked (bp_tgt
->placed_address
);
8320 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8321 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8323 if (remote_supports_cond_breakpoints ())
8324 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8326 if (remote_can_run_breakpoint_commands ())
8327 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8330 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8332 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8335 if (rs
->buf
[1] == '.')
8337 message
= strchr (rs
->buf
+ 2, '.');
8339 error (_("Remote failure reply: %s"), message
+ 1);
8342 case PACKET_UNKNOWN
:
8347 internal_error (__FILE__
, __LINE__
,
8348 _("remote_insert_hw_breakpoint: reached end of function"));
8353 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8354 struct bp_target_info
*bp_tgt
)
8357 struct remote_state
*rs
= get_remote_state ();
8359 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8361 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8368 addr
= remote_address_masked (bp_tgt
->placed_address
);
8369 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8370 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8373 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8375 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8378 case PACKET_UNKNOWN
:
8383 internal_error (__FILE__
, __LINE__
,
8384 _("remote_remove_hw_breakpoint: reached end of function"));
8387 /* Table used by the crc32 function to calcuate the checksum. */
8389 static unsigned long crc32_table
[256] =
8392 static unsigned long
8393 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8395 if (!crc32_table
[1])
8397 /* Initialize the CRC table and the decoding table. */
8401 for (i
= 0; i
< 256; i
++)
8403 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8404 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8411 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8417 /* Verify memory using the "qCRC:" request. */
8420 remote_verify_memory (struct target_ops
*ops
,
8421 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8423 struct remote_state
*rs
= get_remote_state ();
8424 unsigned long host_crc
, target_crc
;
8427 /* FIXME: assumes lma can fit into long. */
8428 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8429 (long) lma
, (long) size
);
8432 /* Be clever; compute the host_crc before waiting for target
8434 host_crc
= crc32 (data
, size
, 0xffffffff);
8436 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8437 if (rs
->buf
[0] == 'E')
8440 if (rs
->buf
[0] != 'C')
8441 error (_("remote target does not support this operation"));
8443 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8444 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8446 return (host_crc
== target_crc
);
8449 /* compare-sections command
8451 With no arguments, compares each loadable section in the exec bfd
8452 with the same memory range on the target, and reports mismatches.
8453 Useful for verifying the image on the target against the exec file. */
8456 compare_sections_command (char *args
, int from_tty
)
8459 struct cleanup
*old_chain
;
8461 const char *sectname
;
8469 error (_("command cannot be used without an exec file"));
8471 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8473 if (!(s
->flags
& SEC_LOAD
))
8474 continue; /* Skip non-loadable section. */
8476 size
= bfd_get_section_size (s
);
8478 continue; /* Skip zero-length section. */
8480 sectname
= bfd_get_section_name (exec_bfd
, s
);
8481 if (args
&& strcmp (args
, sectname
) != 0)
8482 continue; /* Not the section selected by user. */
8484 matched
= 1; /* Do this section. */
8487 sectdata
= xmalloc (size
);
8488 old_chain
= make_cleanup (xfree
, sectdata
);
8489 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8491 res
= target_verify_memory (sectdata
, lma
, size
);
8494 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8495 paddress (target_gdbarch (), lma
),
8496 paddress (target_gdbarch (), lma
+ size
));
8498 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8499 paddress (target_gdbarch (), lma
),
8500 paddress (target_gdbarch (), lma
+ size
));
8502 printf_filtered ("matched.\n");
8505 printf_filtered ("MIS-MATCHED!\n");
8509 do_cleanups (old_chain
);
8512 warning (_("One or more sections of the remote executable does not match\n\
8513 the loaded file\n"));
8514 if (args
&& !matched
)
8515 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8518 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8519 into remote target. The number of bytes written to the remote
8520 target is returned, or -1 for error. */
8523 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8524 const char *annex
, const gdb_byte
*writebuf
,
8525 ULONGEST offset
, LONGEST len
,
8526 struct packet_config
*packet
)
8530 struct remote_state
*rs
= get_remote_state ();
8531 int max_size
= get_memory_write_packet_size ();
8533 if (packet
->support
== PACKET_DISABLE
)
8536 /* Insert header. */
8537 i
= snprintf (rs
->buf
, max_size
,
8538 "qXfer:%s:write:%s:%s:",
8539 object_name
, annex
? annex
: "",
8540 phex_nz (offset
, sizeof offset
));
8541 max_size
-= (i
+ 1);
8543 /* Escape as much data as fits into rs->buf. */
8544 buf_len
= remote_escape_output
8545 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8547 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8548 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8549 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8552 unpack_varlen_hex (rs
->buf
, &n
);
8556 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8557 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8558 number of bytes read is returned, or 0 for EOF, or -1 for error.
8559 The number of bytes read may be less than LEN without indicating an
8560 EOF. PACKET is checked and updated to indicate whether the remote
8561 target supports this object. */
8564 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8566 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8567 struct packet_config
*packet
)
8569 static char *finished_object
;
8570 static char *finished_annex
;
8571 static ULONGEST finished_offset
;
8573 struct remote_state
*rs
= get_remote_state ();
8574 LONGEST i
, n
, packet_len
;
8576 if (packet
->support
== PACKET_DISABLE
)
8579 /* Check whether we've cached an end-of-object packet that matches
8581 if (finished_object
)
8583 if (strcmp (object_name
, finished_object
) == 0
8584 && strcmp (annex
? annex
: "", finished_annex
) == 0
8585 && offset
== finished_offset
)
8588 /* Otherwise, we're now reading something different. Discard
8590 xfree (finished_object
);
8591 xfree (finished_annex
);
8592 finished_object
= NULL
;
8593 finished_annex
= NULL
;
8596 /* Request only enough to fit in a single packet. The actual data
8597 may not, since we don't know how much of it will need to be escaped;
8598 the target is free to respond with slightly less data. We subtract
8599 five to account for the response type and the protocol frame. */
8600 n
= min (get_remote_packet_size () - 5, len
);
8601 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8602 object_name
, annex
? annex
: "",
8603 phex_nz (offset
, sizeof offset
),
8604 phex_nz (n
, sizeof n
));
8605 i
= putpkt (rs
->buf
);
8610 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8611 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8614 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8615 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8617 /* 'm' means there is (or at least might be) more data after this
8618 batch. That does not make sense unless there's at least one byte
8619 of data in this reply. */
8620 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8621 error (_("Remote qXfer reply contained no data."));
8623 /* Got some data. */
8624 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8626 /* 'l' is an EOF marker, possibly including a final block of data,
8627 or possibly empty. If we have the final block of a non-empty
8628 object, record this fact to bypass a subsequent partial read. */
8629 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8631 finished_object
= xstrdup (object_name
);
8632 finished_annex
= xstrdup (annex
? annex
: "");
8633 finished_offset
= offset
+ i
;
8640 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8641 const char *annex
, gdb_byte
*readbuf
,
8642 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8644 struct remote_state
*rs
;
8649 set_remote_traceframe ();
8650 set_general_thread (inferior_ptid
);
8652 rs
= get_remote_state ();
8654 /* Handle memory using the standard memory routines. */
8655 if (object
== TARGET_OBJECT_MEMORY
)
8661 /* If the remote target is connected but not running, we should
8662 pass this request down to a lower stratum (e.g. the executable
8664 if (!target_has_execution
)
8667 if (writebuf
!= NULL
)
8668 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8670 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8674 else if (xfered
== 0 && errno
== 0)
8680 /* Handle SPU memory using qxfer packets. */
8681 if (object
== TARGET_OBJECT_SPU
)
8684 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8685 &remote_protocol_packets
8686 [PACKET_qXfer_spu_read
]);
8688 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8689 &remote_protocol_packets
8690 [PACKET_qXfer_spu_write
]);
8693 /* Handle extra signal info using qxfer packets. */
8694 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8697 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8698 &remote_protocol_packets
8699 [PACKET_qXfer_siginfo_read
]);
8701 return remote_write_qxfer (ops
, "siginfo", annex
,
8702 writebuf
, offset
, len
,
8703 &remote_protocol_packets
8704 [PACKET_qXfer_siginfo_write
]);
8707 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8710 return remote_read_qxfer (ops
, "statictrace", annex
,
8711 readbuf
, offset
, len
,
8712 &remote_protocol_packets
8713 [PACKET_qXfer_statictrace_read
]);
8718 /* Only handle flash writes. */
8719 if (writebuf
!= NULL
)
8725 case TARGET_OBJECT_FLASH
:
8726 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8730 else if (xfered
== 0 && errno
== 0)
8740 /* Map pre-existing objects onto letters. DO NOT do this for new
8741 objects!!! Instead specify new query packets. */
8744 case TARGET_OBJECT_AVR
:
8748 case TARGET_OBJECT_AUXV
:
8749 gdb_assert (annex
== NULL
);
8750 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8751 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8753 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8754 return remote_read_qxfer
8755 (ops
, "features", annex
, readbuf
, offset
, len
,
8756 &remote_protocol_packets
[PACKET_qXfer_features
]);
8758 case TARGET_OBJECT_LIBRARIES
:
8759 return remote_read_qxfer
8760 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8761 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8763 case TARGET_OBJECT_LIBRARIES_SVR4
:
8764 return remote_read_qxfer
8765 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8766 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8768 case TARGET_OBJECT_MEMORY_MAP
:
8769 gdb_assert (annex
== NULL
);
8770 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8771 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8773 case TARGET_OBJECT_OSDATA
:
8774 /* Should only get here if we're connected. */
8775 gdb_assert (remote_desc
);
8776 return remote_read_qxfer
8777 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8778 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8780 case TARGET_OBJECT_THREADS
:
8781 gdb_assert (annex
== NULL
);
8782 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8783 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8785 case TARGET_OBJECT_TRACEFRAME_INFO
:
8786 gdb_assert (annex
== NULL
);
8787 return remote_read_qxfer
8788 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8789 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8791 case TARGET_OBJECT_FDPIC
:
8792 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8793 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8795 case TARGET_OBJECT_OPENVMS_UIB
:
8796 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8797 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8803 /* Note: a zero OFFSET and LEN can be used to query the minimum
8805 if (offset
== 0 && len
== 0)
8806 return (get_remote_packet_size ());
8807 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8808 large enough let the caller deal with it. */
8809 if (len
< get_remote_packet_size ())
8811 len
= get_remote_packet_size ();
8813 /* Except for querying the minimum buffer size, target must be open. */
8815 error (_("remote query is only available after target open"));
8817 gdb_assert (annex
!= NULL
);
8818 gdb_assert (readbuf
!= NULL
);
8824 /* We used one buffer char for the remote protocol q command and
8825 another for the query type. As the remote protocol encapsulation
8826 uses 4 chars plus one extra in case we are debugging
8827 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8830 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8832 /* Bad caller may have sent forbidden characters. */
8833 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8838 gdb_assert (annex
[i
] == '\0');
8840 i
= putpkt (rs
->buf
);
8844 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8845 strcpy ((char *) readbuf
, rs
->buf
);
8847 return strlen ((char *) readbuf
);
8851 remote_search_memory (struct target_ops
* ops
,
8852 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8853 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8854 CORE_ADDR
*found_addrp
)
8856 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8857 struct remote_state
*rs
= get_remote_state ();
8858 int max_size
= get_memory_write_packet_size ();
8859 struct packet_config
*packet
=
8860 &remote_protocol_packets
[PACKET_qSearch_memory
];
8861 /* Number of packet bytes used to encode the pattern;
8862 this could be more than PATTERN_LEN due to escape characters. */
8863 int escaped_pattern_len
;
8864 /* Amount of pattern that was encodable in the packet. */
8865 int used_pattern_len
;
8868 ULONGEST found_addr
;
8870 /* Don't go to the target if we don't have to.
8871 This is done before checking packet->support to avoid the possibility that
8872 a success for this edge case means the facility works in general. */
8873 if (pattern_len
> search_space_len
)
8875 if (pattern_len
== 0)
8877 *found_addrp
= start_addr
;
8881 /* If we already know the packet isn't supported, fall back to the simple
8882 way of searching memory. */
8884 if (packet
->support
== PACKET_DISABLE
)
8886 /* Target doesn't provided special support, fall back and use the
8887 standard support (copy memory and do the search here). */
8888 return simple_search_memory (ops
, start_addr
, search_space_len
,
8889 pattern
, pattern_len
, found_addrp
);
8892 /* Insert header. */
8893 i
= snprintf (rs
->buf
, max_size
,
8894 "qSearch:memory:%s;%s;",
8895 phex_nz (start_addr
, addr_size
),
8896 phex_nz (search_space_len
, sizeof (search_space_len
)));
8897 max_size
-= (i
+ 1);
8899 /* Escape as much data as fits into rs->buf. */
8900 escaped_pattern_len
=
8901 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8902 &used_pattern_len
, max_size
);
8904 /* Bail if the pattern is too large. */
8905 if (used_pattern_len
!= pattern_len
)
8906 error (_("Pattern is too large to transmit to remote target."));
8908 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8909 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8910 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8912 /* The request may not have worked because the command is not
8913 supported. If so, fall back to the simple way. */
8914 if (packet
->support
== PACKET_DISABLE
)
8916 return simple_search_memory (ops
, start_addr
, search_space_len
,
8917 pattern
, pattern_len
, found_addrp
);
8922 if (rs
->buf
[0] == '0')
8924 else if (rs
->buf
[0] == '1')
8927 if (rs
->buf
[1] != ',')
8928 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8929 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8930 *found_addrp
= found_addr
;
8933 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8939 remote_rcmd (char *command
,
8940 struct ui_file
*outbuf
)
8942 struct remote_state
*rs
= get_remote_state ();
8946 error (_("remote rcmd is only available after target open"));
8948 /* Send a NULL command across as an empty command. */
8949 if (command
== NULL
)
8952 /* The query prefix. */
8953 strcpy (rs
->buf
, "qRcmd,");
8954 p
= strchr (rs
->buf
, '\0');
8956 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8957 > get_remote_packet_size ())
8958 error (_("\"monitor\" command ``%s'' is too long."), command
);
8960 /* Encode the actual command. */
8961 bin2hex ((gdb_byte
*) command
, p
, 0);
8963 if (putpkt (rs
->buf
) < 0)
8964 error (_("Communication problem with target."));
8966 /* get/display the response */
8971 /* XXX - see also remote_get_noisy_reply(). */
8972 QUIT
; /* Allow user to bail out with ^C. */
8974 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8976 /* Timeout. Continue to (try to) read responses.
8977 This is better than stopping with an error, assuming the stub
8978 is still executing the (long) monitor command.
8979 If needed, the user can interrupt gdb using C-c, obtaining
8980 an effect similar to stop on timeout. */
8985 error (_("Target does not support this command."));
8986 if (buf
[0] == 'O' && buf
[1] != 'K')
8988 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8991 if (strcmp (buf
, "OK") == 0)
8993 if (strlen (buf
) == 3 && buf
[0] == 'E'
8994 && isdigit (buf
[1]) && isdigit (buf
[2]))
8996 error (_("Protocol error with Rcmd"));
8998 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9000 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9002 fputc_unfiltered (c
, outbuf
);
9008 static VEC(mem_region_s
) *
9009 remote_memory_map (struct target_ops
*ops
)
9011 VEC(mem_region_s
) *result
= NULL
;
9012 char *text
= target_read_stralloc (¤t_target
,
9013 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9017 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9019 result
= parse_memory_map (text
);
9020 do_cleanups (back_to
);
9027 packet_command (char *args
, int from_tty
)
9029 struct remote_state
*rs
= get_remote_state ();
9032 error (_("command can only be used with remote target"));
9035 error (_("remote-packet command requires packet text as argument"));
9037 puts_filtered ("sending: ");
9038 print_packet (args
);
9039 puts_filtered ("\n");
9042 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9043 puts_filtered ("received: ");
9044 print_packet (rs
->buf
);
9045 puts_filtered ("\n");
9049 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9051 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9053 static void threadset_test_cmd (char *cmd
, int tty
);
9055 static void threadalive_test (char *cmd
, int tty
);
9057 static void threadlist_test_cmd (char *cmd
, int tty
);
9059 int get_and_display_threadinfo (threadref
*ref
);
9061 static void threadinfo_test_cmd (char *cmd
, int tty
);
9063 static int thread_display_step (threadref
*ref
, void *context
);
9065 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9067 static void init_remote_threadtests (void);
9069 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9072 threadset_test_cmd (char *cmd
, int tty
)
9074 int sample_thread
= SAMPLE_THREAD
;
9076 printf_filtered (_("Remote threadset test\n"));
9077 set_general_thread (sample_thread
);
9082 threadalive_test (char *cmd
, int tty
)
9084 int sample_thread
= SAMPLE_THREAD
;
9085 int pid
= ptid_get_pid (inferior_ptid
);
9086 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9088 if (remote_thread_alive (ptid
))
9089 printf_filtered ("PASS: Thread alive test\n");
9091 printf_filtered ("FAIL: Thread alive test\n");
9094 void output_threadid (char *title
, threadref
*ref
);
9097 output_threadid (char *title
, threadref
*ref
)
9101 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9103 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9107 threadlist_test_cmd (char *cmd
, int tty
)
9110 threadref nextthread
;
9111 int done
, result_count
;
9112 threadref threadlist
[3];
9114 printf_filtered ("Remote Threadlist test\n");
9115 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9116 &result_count
, &threadlist
[0]))
9117 printf_filtered ("FAIL: threadlist test\n");
9120 threadref
*scan
= threadlist
;
9121 threadref
*limit
= scan
+ result_count
;
9123 while (scan
< limit
)
9124 output_threadid (" thread ", scan
++);
9129 display_thread_info (struct gdb_ext_thread_info
*info
)
9131 output_threadid ("Threadid: ", &info
->threadid
);
9132 printf_filtered ("Name: %s\n ", info
->shortname
);
9133 printf_filtered ("State: %s\n", info
->display
);
9134 printf_filtered ("other: %s\n\n", info
->more_display
);
9138 get_and_display_threadinfo (threadref
*ref
)
9142 struct gdb_ext_thread_info threadinfo
;
9144 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9145 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9146 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9147 display_thread_info (&threadinfo
);
9152 threadinfo_test_cmd (char *cmd
, int tty
)
9154 int athread
= SAMPLE_THREAD
;
9158 int_to_threadref (&thread
, athread
);
9159 printf_filtered ("Remote Threadinfo test\n");
9160 if (!get_and_display_threadinfo (&thread
))
9161 printf_filtered ("FAIL cannot get thread info\n");
9165 thread_display_step (threadref
*ref
, void *context
)
9167 /* output_threadid(" threadstep ",ref); *//* simple test */
9168 return get_and_display_threadinfo (ref
);
9172 threadlist_update_test_cmd (char *cmd
, int tty
)
9174 printf_filtered ("Remote Threadlist update test\n");
9175 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9179 init_remote_threadtests (void)
9181 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9182 _("Fetch and print the remote list of "
9183 "thread identifiers, one pkt only"));
9184 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9185 _("Fetch and display info about one thread"));
9186 add_com ("tset", class_obscure
, threadset_test_cmd
,
9187 _("Test setting to a different thread"));
9188 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9189 _("Iterate through updating all remote thread info"));
9190 add_com ("talive", class_obscure
, threadalive_test
,
9191 _(" Remote thread alive test "));
9196 /* Convert a thread ID to a string. Returns the string in a static
9200 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9202 static char buf
[64];
9203 struct remote_state
*rs
= get_remote_state ();
9205 if (ptid_equal (ptid
, null_ptid
))
9206 return normal_pid_to_str (ptid
);
9207 else if (ptid_is_pid (ptid
))
9209 /* Printing an inferior target id. */
9211 /* When multi-process extensions are off, there's no way in the
9212 remote protocol to know the remote process id, if there's any
9213 at all. There's one exception --- when we're connected with
9214 target extended-remote, and we manually attached to a process
9215 with "attach PID". We don't record anywhere a flag that
9216 allows us to distinguish that case from the case of
9217 connecting with extended-remote and the stub already being
9218 attached to a process, and reporting yes to qAttached, hence
9219 no smart special casing here. */
9220 if (!remote_multi_process_p (rs
))
9222 xsnprintf (buf
, sizeof buf
, "Remote target");
9226 return normal_pid_to_str (ptid
);
9230 if (ptid_equal (magic_null_ptid
, ptid
))
9231 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9232 else if (rs
->extended
&& remote_multi_process_p (rs
))
9233 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9234 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9236 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9237 ptid_get_tid (ptid
));
9242 /* Get the address of the thread local variable in OBJFILE which is
9243 stored at OFFSET within the thread local storage for thread PTID. */
9246 remote_get_thread_local_address (struct target_ops
*ops
,
9247 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9249 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9251 struct remote_state
*rs
= get_remote_state ();
9253 char *endp
= rs
->buf
+ get_remote_packet_size ();
9254 enum packet_result result
;
9256 strcpy (p
, "qGetTLSAddr:");
9258 p
= write_ptid (p
, endp
, ptid
);
9260 p
+= hexnumstr (p
, offset
);
9262 p
+= hexnumstr (p
, lm
);
9266 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9267 result
= packet_ok (rs
->buf
,
9268 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9269 if (result
== PACKET_OK
)
9273 unpack_varlen_hex (rs
->buf
, &result
);
9276 else if (result
== PACKET_UNKNOWN
)
9277 throw_error (TLS_GENERIC_ERROR
,
9278 _("Remote target doesn't support qGetTLSAddr packet"));
9280 throw_error (TLS_GENERIC_ERROR
,
9281 _("Remote target failed to process qGetTLSAddr request"));
9284 throw_error (TLS_GENERIC_ERROR
,
9285 _("TLS not supported or disabled on this target"));
9290 /* Provide thread local base, i.e. Thread Information Block address.
9291 Returns 1 if ptid is found and thread_local_base is non zero. */
9294 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9296 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9298 struct remote_state
*rs
= get_remote_state ();
9300 char *endp
= rs
->buf
+ get_remote_packet_size ();
9301 enum packet_result result
;
9303 strcpy (p
, "qGetTIBAddr:");
9305 p
= write_ptid (p
, endp
, ptid
);
9309 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9310 result
= packet_ok (rs
->buf
,
9311 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9312 if (result
== PACKET_OK
)
9316 unpack_varlen_hex (rs
->buf
, &result
);
9318 *addr
= (CORE_ADDR
) result
;
9321 else if (result
== PACKET_UNKNOWN
)
9322 error (_("Remote target doesn't support qGetTIBAddr packet"));
9324 error (_("Remote target failed to process qGetTIBAddr request"));
9327 error (_("qGetTIBAddr not supported or disabled on this target"));
9332 /* Support for inferring a target description based on the current
9333 architecture and the size of a 'g' packet. While the 'g' packet
9334 can have any size (since optional registers can be left off the
9335 end), some sizes are easily recognizable given knowledge of the
9336 approximate architecture. */
9338 struct remote_g_packet_guess
9341 const struct target_desc
*tdesc
;
9343 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9344 DEF_VEC_O(remote_g_packet_guess_s
);
9346 struct remote_g_packet_data
9348 VEC(remote_g_packet_guess_s
) *guesses
;
9351 static struct gdbarch_data
*remote_g_packet_data_handle
;
9354 remote_g_packet_data_init (struct obstack
*obstack
)
9356 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9360 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9361 const struct target_desc
*tdesc
)
9363 struct remote_g_packet_data
*data
9364 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9365 struct remote_g_packet_guess new_guess
, *guess
;
9368 gdb_assert (tdesc
!= NULL
);
9371 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9373 if (guess
->bytes
== bytes
)
9374 internal_error (__FILE__
, __LINE__
,
9375 _("Duplicate g packet description added for size %d"),
9378 new_guess
.bytes
= bytes
;
9379 new_guess
.tdesc
= tdesc
;
9380 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9383 /* Return 1 if remote_read_description would do anything on this target
9384 and architecture, 0 otherwise. */
9387 remote_read_description_p (struct target_ops
*target
)
9389 struct remote_g_packet_data
*data
9390 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9392 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9398 static const struct target_desc
*
9399 remote_read_description (struct target_ops
*target
)
9401 struct remote_g_packet_data
*data
9402 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9404 /* Do not try this during initial connection, when we do not know
9405 whether there is a running but stopped thread. */
9406 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9409 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9411 struct remote_g_packet_guess
*guess
;
9413 int bytes
= send_g_packet ();
9416 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9418 if (guess
->bytes
== bytes
)
9419 return guess
->tdesc
;
9421 /* We discard the g packet. A minor optimization would be to
9422 hold on to it, and fill the register cache once we have selected
9423 an architecture, but it's too tricky to do safely. */
9429 /* Remote file transfer support. This is host-initiated I/O, not
9430 target-initiated; for target-initiated, see remote-fileio.c. */
9432 /* If *LEFT is at least the length of STRING, copy STRING to
9433 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9434 decrease *LEFT. Otherwise raise an error. */
9437 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9439 int len
= strlen (string
);
9442 error (_("Packet too long for target."));
9444 memcpy (*buffer
, string
, len
);
9448 /* NUL-terminate the buffer as a convenience, if there is
9454 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9455 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9456 decrease *LEFT. Otherwise raise an error. */
9459 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9462 if (2 * len
> *left
)
9463 error (_("Packet too long for target."));
9465 bin2hex (bytes
, *buffer
, len
);
9469 /* NUL-terminate the buffer as a convenience, if there is
9475 /* If *LEFT is large enough, convert VALUE to hex and add it to
9476 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9477 decrease *LEFT. Otherwise raise an error. */
9480 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9482 int len
= hexnumlen (value
);
9485 error (_("Packet too long for target."));
9487 hexnumstr (*buffer
, value
);
9491 /* NUL-terminate the buffer as a convenience, if there is
9497 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9498 value, *REMOTE_ERRNO to the remote error number or zero if none
9499 was included, and *ATTACHMENT to point to the start of the annex
9500 if any. The length of the packet isn't needed here; there may
9501 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9503 Return 0 if the packet could be parsed, -1 if it could not. If
9504 -1 is returned, the other variables may not be initialized. */
9507 remote_hostio_parse_result (char *buffer
, int *retcode
,
9508 int *remote_errno
, char **attachment
)
9515 if (buffer
[0] != 'F')
9519 *retcode
= strtol (&buffer
[1], &p
, 16);
9520 if (errno
!= 0 || p
== &buffer
[1])
9523 /* Check for ",errno". */
9527 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9528 if (errno
!= 0 || p
+ 1 == p2
)
9533 /* Check for ";attachment". If there is no attachment, the
9534 packet should end here. */
9537 *attachment
= p
+ 1;
9540 else if (*p
== '\0')
9546 /* Send a prepared I/O packet to the target and read its response.
9547 The prepared packet is in the global RS->BUF before this function
9548 is called, and the answer is there when we return.
9550 COMMAND_BYTES is the length of the request to send, which may include
9551 binary data. WHICH_PACKET is the packet configuration to check
9552 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9553 is set to the error number and -1 is returned. Otherwise the value
9554 returned by the function is returned.
9556 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9557 attachment is expected; an error will be reported if there's a
9558 mismatch. If one is found, *ATTACHMENT will be set to point into
9559 the packet buffer and *ATTACHMENT_LEN will be set to the
9560 attachment's length. */
9563 remote_hostio_send_command (int command_bytes
, int which_packet
,
9564 int *remote_errno
, char **attachment
,
9565 int *attachment_len
)
9567 struct remote_state
*rs
= get_remote_state ();
9568 int ret
, bytes_read
;
9569 char *attachment_tmp
;
9572 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9574 *remote_errno
= FILEIO_ENOSYS
;
9578 putpkt_binary (rs
->buf
, command_bytes
);
9579 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9581 /* If it timed out, something is wrong. Don't try to parse the
9585 *remote_errno
= FILEIO_EINVAL
;
9589 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9592 *remote_errno
= FILEIO_EINVAL
;
9594 case PACKET_UNKNOWN
:
9595 *remote_errno
= FILEIO_ENOSYS
;
9601 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9604 *remote_errno
= FILEIO_EINVAL
;
9608 /* Make sure we saw an attachment if and only if we expected one. */
9609 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9610 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9612 *remote_errno
= FILEIO_EINVAL
;
9616 /* If an attachment was found, it must point into the packet buffer;
9617 work out how many bytes there were. */
9618 if (attachment_tmp
!= NULL
)
9620 *attachment
= attachment_tmp
;
9621 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9627 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9628 remote file descriptor, or -1 if an error occurs (and set
9632 remote_hostio_open (const char *filename
, int flags
, int mode
,
9635 struct remote_state
*rs
= get_remote_state ();
9637 int left
= get_remote_packet_size () - 1;
9639 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9641 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9643 remote_buffer_add_string (&p
, &left
, ",");
9645 remote_buffer_add_int (&p
, &left
, flags
);
9646 remote_buffer_add_string (&p
, &left
, ",");
9648 remote_buffer_add_int (&p
, &left
, mode
);
9650 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9651 remote_errno
, NULL
, NULL
);
9654 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9655 Return the number of bytes written, or -1 if an error occurs (and
9656 set *REMOTE_ERRNO). */
9659 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9660 ULONGEST offset
, int *remote_errno
)
9662 struct remote_state
*rs
= get_remote_state ();
9664 int left
= get_remote_packet_size ();
9667 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9669 remote_buffer_add_int (&p
, &left
, fd
);
9670 remote_buffer_add_string (&p
, &left
, ",");
9672 remote_buffer_add_int (&p
, &left
, offset
);
9673 remote_buffer_add_string (&p
, &left
, ",");
9675 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9676 get_remote_packet_size () - (p
- rs
->buf
));
9678 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9679 remote_errno
, NULL
, NULL
);
9682 /* Read up to LEN bytes FD on the remote target into READ_BUF
9683 Return the number of bytes read, or -1 if an error occurs (and
9684 set *REMOTE_ERRNO). */
9687 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9688 ULONGEST offset
, int *remote_errno
)
9690 struct remote_state
*rs
= get_remote_state ();
9693 int left
= get_remote_packet_size ();
9694 int ret
, attachment_len
;
9697 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9699 remote_buffer_add_int (&p
, &left
, fd
);
9700 remote_buffer_add_string (&p
, &left
, ",");
9702 remote_buffer_add_int (&p
, &left
, len
);
9703 remote_buffer_add_string (&p
, &left
, ",");
9705 remote_buffer_add_int (&p
, &left
, offset
);
9707 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9708 remote_errno
, &attachment
,
9714 read_len
= remote_unescape_input (attachment
, attachment_len
,
9716 if (read_len
!= ret
)
9717 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9722 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9723 (and set *REMOTE_ERRNO). */
9726 remote_hostio_close (int fd
, int *remote_errno
)
9728 struct remote_state
*rs
= get_remote_state ();
9730 int left
= get_remote_packet_size () - 1;
9732 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9734 remote_buffer_add_int (&p
, &left
, fd
);
9736 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9737 remote_errno
, NULL
, NULL
);
9740 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9741 occurs (and set *REMOTE_ERRNO). */
9744 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9746 struct remote_state
*rs
= get_remote_state ();
9748 int left
= get_remote_packet_size () - 1;
9750 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9752 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9755 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9756 remote_errno
, NULL
, NULL
);
9759 /* Read value of symbolic link FILENAME on the remote target. Return
9760 a null-terminated string allocated via xmalloc, or NULL if an error
9761 occurs (and set *REMOTE_ERRNO). */
9764 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9766 struct remote_state
*rs
= get_remote_state ();
9769 int left
= get_remote_packet_size ();
9770 int len
, attachment_len
;
9774 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9776 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9779 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9780 remote_errno
, &attachment
,
9786 ret
= xmalloc (len
+ 1);
9788 read_len
= remote_unescape_input (attachment
, attachment_len
,
9790 if (read_len
!= len
)
9791 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9798 remote_fileio_errno_to_host (int errnum
)
9822 case FILEIO_ENOTDIR
:
9842 case FILEIO_ENAMETOOLONG
:
9843 return ENAMETOOLONG
;
9849 remote_hostio_error (int errnum
)
9851 int host_error
= remote_fileio_errno_to_host (errnum
);
9853 if (host_error
== -1)
9854 error (_("Unknown remote I/O error %d"), errnum
);
9856 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9860 remote_hostio_close_cleanup (void *opaque
)
9862 int fd
= *(int *) opaque
;
9865 remote_hostio_close (fd
, &remote_errno
);
9870 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9872 const char *filename
= bfd_get_filename (abfd
);
9873 int fd
, remote_errno
;
9876 gdb_assert (remote_filename_p (filename
));
9878 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9881 errno
= remote_fileio_errno_to_host (remote_errno
);
9882 bfd_set_error (bfd_error_system_call
);
9886 stream
= xmalloc (sizeof (int));
9892 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9894 int fd
= *(int *)stream
;
9899 /* Ignore errors on close; these may happen if the remote
9900 connection was already torn down. */
9901 remote_hostio_close (fd
, &remote_errno
);
9907 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9908 file_ptr nbytes
, file_ptr offset
)
9910 int fd
= *(int *)stream
;
9912 file_ptr pos
, bytes
;
9915 while (nbytes
> pos
)
9917 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9918 offset
+ pos
, &remote_errno
);
9920 /* Success, but no bytes, means end-of-file. */
9924 errno
= remote_fileio_errno_to_host (remote_errno
);
9925 bfd_set_error (bfd_error_system_call
);
9936 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9938 /* FIXME: We should probably implement remote_hostio_stat. */
9939 sb
->st_size
= INT_MAX
;
9944 remote_filename_p (const char *filename
)
9946 return strncmp (filename
, "remote:", 7) == 0;
9950 remote_bfd_open (const char *remote_file
, const char *target
)
9952 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9953 remote_bfd_iovec_open
, NULL
,
9954 remote_bfd_iovec_pread
,
9955 remote_bfd_iovec_close
,
9956 remote_bfd_iovec_stat
);
9962 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9964 struct cleanup
*back_to
, *close_cleanup
;
9965 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9968 int bytes_in_buffer
;
9973 error (_("command can only be used with remote target"));
9975 file
= fopen (local_file
, "rb");
9977 perror_with_name (local_file
);
9978 back_to
= make_cleanup_fclose (file
);
9980 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9982 0700, &remote_errno
);
9984 remote_hostio_error (remote_errno
);
9986 /* Send up to this many bytes at once. They won't all fit in the
9987 remote packet limit, so we'll transfer slightly fewer. */
9988 io_size
= get_remote_packet_size ();
9989 buffer
= xmalloc (io_size
);
9990 make_cleanup (xfree
, buffer
);
9992 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9994 bytes_in_buffer
= 0;
9997 while (bytes_in_buffer
|| !saw_eof
)
10001 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10002 io_size
- bytes_in_buffer
,
10007 error (_("Error reading %s."), local_file
);
10010 /* EOF. Unless there is something still in the
10011 buffer from the last iteration, we are done. */
10013 if (bytes_in_buffer
== 0)
10021 bytes
+= bytes_in_buffer
;
10022 bytes_in_buffer
= 0;
10024 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10025 offset
, &remote_errno
);
10028 remote_hostio_error (remote_errno
);
10029 else if (retcode
== 0)
10030 error (_("Remote write of %d bytes returned 0!"), bytes
);
10031 else if (retcode
< bytes
)
10033 /* Short write. Save the rest of the read data for the next
10035 bytes_in_buffer
= bytes
- retcode
;
10036 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10042 discard_cleanups (close_cleanup
);
10043 if (remote_hostio_close (fd
, &remote_errno
))
10044 remote_hostio_error (remote_errno
);
10047 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10048 do_cleanups (back_to
);
10052 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10054 struct cleanup
*back_to
, *close_cleanup
;
10055 int fd
, remote_errno
, bytes
, io_size
;
10061 error (_("command can only be used with remote target"));
10063 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10065 remote_hostio_error (remote_errno
);
10067 file
= fopen (local_file
, "wb");
10069 perror_with_name (local_file
);
10070 back_to
= make_cleanup_fclose (file
);
10072 /* Send up to this many bytes at once. They won't all fit in the
10073 remote packet limit, so we'll transfer slightly fewer. */
10074 io_size
= get_remote_packet_size ();
10075 buffer
= xmalloc (io_size
);
10076 make_cleanup (xfree
, buffer
);
10078 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10083 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10085 /* Success, but no bytes, means end-of-file. */
10088 remote_hostio_error (remote_errno
);
10092 bytes
= fwrite (buffer
, 1, bytes
, file
);
10094 perror_with_name (local_file
);
10097 discard_cleanups (close_cleanup
);
10098 if (remote_hostio_close (fd
, &remote_errno
))
10099 remote_hostio_error (remote_errno
);
10102 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10103 do_cleanups (back_to
);
10107 remote_file_delete (const char *remote_file
, int from_tty
)
10109 int retcode
, remote_errno
;
10112 error (_("command can only be used with remote target"));
10114 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10116 remote_hostio_error (remote_errno
);
10119 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10123 remote_put_command (char *args
, int from_tty
)
10125 struct cleanup
*back_to
;
10129 error_no_arg (_("file to put"));
10131 argv
= gdb_buildargv (args
);
10132 back_to
= make_cleanup_freeargv (argv
);
10133 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10134 error (_("Invalid parameters to remote put"));
10136 remote_file_put (argv
[0], argv
[1], from_tty
);
10138 do_cleanups (back_to
);
10142 remote_get_command (char *args
, int from_tty
)
10144 struct cleanup
*back_to
;
10148 error_no_arg (_("file to get"));
10150 argv
= gdb_buildargv (args
);
10151 back_to
= make_cleanup_freeargv (argv
);
10152 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10153 error (_("Invalid parameters to remote get"));
10155 remote_file_get (argv
[0], argv
[1], from_tty
);
10157 do_cleanups (back_to
);
10161 remote_delete_command (char *args
, int from_tty
)
10163 struct cleanup
*back_to
;
10167 error_no_arg (_("file to delete"));
10169 argv
= gdb_buildargv (args
);
10170 back_to
= make_cleanup_freeargv (argv
);
10171 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10172 error (_("Invalid parameters to remote delete"));
10174 remote_file_delete (argv
[0], from_tty
);
10176 do_cleanups (back_to
);
10180 remote_command (char *args
, int from_tty
)
10182 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10186 remote_can_execute_reverse (void)
10188 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10189 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10196 remote_supports_non_stop (void)
10202 remote_supports_disable_randomization (void)
10204 /* Only supported in extended mode. */
10209 remote_supports_multi_process (void)
10211 struct remote_state
*rs
= get_remote_state ();
10213 /* Only extended-remote handles being attached to multiple
10214 processes, even though plain remote can use the multi-process
10215 thread id extensions, so that GDB knows the target process's
10217 return rs
->extended
&& remote_multi_process_p (rs
);
10221 remote_supports_cond_tracepoints (void)
10223 struct remote_state
*rs
= get_remote_state ();
10225 return rs
->cond_tracepoints
;
10229 remote_supports_cond_breakpoints (void)
10231 struct remote_state
*rs
= get_remote_state ();
10233 return rs
->cond_breakpoints
;
10237 remote_supports_fast_tracepoints (void)
10239 struct remote_state
*rs
= get_remote_state ();
10241 return rs
->fast_tracepoints
;
10245 remote_supports_static_tracepoints (void)
10247 struct remote_state
*rs
= get_remote_state ();
10249 return rs
->static_tracepoints
;
10253 remote_supports_install_in_trace (void)
10255 struct remote_state
*rs
= get_remote_state ();
10257 return rs
->install_in_trace
;
10261 remote_supports_enable_disable_tracepoint (void)
10263 struct remote_state
*rs
= get_remote_state ();
10265 return rs
->enable_disable_tracepoints
;
10269 remote_supports_string_tracing (void)
10271 struct remote_state
*rs
= get_remote_state ();
10273 return rs
->string_tracing
;
10277 remote_can_run_breakpoint_commands (void)
10279 struct remote_state
*rs
= get_remote_state ();
10281 return rs
->breakpoint_commands
;
10285 remote_trace_init (void)
10288 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10289 if (strcmp (target_buf
, "OK") != 0)
10290 error (_("Target does not support this command."));
10293 static void free_actions_list (char **actions_list
);
10294 static void free_actions_list_cleanup_wrapper (void *);
10296 free_actions_list_cleanup_wrapper (void *al
)
10298 free_actions_list (al
);
10302 free_actions_list (char **actions_list
)
10306 if (actions_list
== 0)
10309 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10310 xfree (actions_list
[ndx
]);
10312 xfree (actions_list
);
10315 /* Recursive routine to walk through command list including loops, and
10316 download packets for each command. */
10319 remote_download_command_source (int num
, ULONGEST addr
,
10320 struct command_line
*cmds
)
10322 struct remote_state
*rs
= get_remote_state ();
10323 struct command_line
*cmd
;
10325 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10327 QUIT
; /* Allow user to bail out with ^C. */
10328 strcpy (rs
->buf
, "QTDPsrc:");
10329 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10330 rs
->buf
+ strlen (rs
->buf
),
10331 rs
->buf_size
- strlen (rs
->buf
));
10333 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10334 if (strcmp (target_buf
, "OK"))
10335 warning (_("Target does not support source download."));
10337 if (cmd
->control_type
== while_control
10338 || cmd
->control_type
== while_stepping_control
)
10340 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10342 QUIT
; /* Allow user to bail out with ^C. */
10343 strcpy (rs
->buf
, "QTDPsrc:");
10344 encode_source_string (num
, addr
, "cmd", "end",
10345 rs
->buf
+ strlen (rs
->buf
),
10346 rs
->buf_size
- strlen (rs
->buf
));
10348 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10349 if (strcmp (target_buf
, "OK"))
10350 warning (_("Target does not support source download."));
10356 remote_download_tracepoint (struct bp_location
*loc
)
10358 #define BUF_SIZE 2048
10362 char buf
[BUF_SIZE
];
10363 char **tdp_actions
;
10364 char **stepping_actions
;
10366 struct cleanup
*old_chain
= NULL
;
10367 struct agent_expr
*aexpr
;
10368 struct cleanup
*aexpr_chain
= NULL
;
10370 struct breakpoint
*b
= loc
->owner
;
10371 struct tracepoint
*t
= (struct tracepoint
*) b
;
10373 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10374 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10376 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10379 tpaddr
= loc
->address
;
10380 sprintf_vma (addrbuf
, tpaddr
);
10381 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10382 addrbuf
, /* address */
10383 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10384 t
->step_count
, t
->pass_count
);
10385 /* Fast tracepoints are mostly handled by the target, but we can
10386 tell the target how big of an instruction block should be moved
10388 if (b
->type
== bp_fast_tracepoint
)
10390 /* Only test for support at download time; we may not know
10391 target capabilities at definition time. */
10392 if (remote_supports_fast_tracepoints ())
10396 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10397 tpaddr
, &isize
, NULL
))
10398 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10401 /* If it passed validation at definition but fails now,
10402 something is very wrong. */
10403 internal_error (__FILE__
, __LINE__
,
10404 _("Fast tracepoint not "
10405 "valid during download"));
10408 /* Fast tracepoints are functionally identical to regular
10409 tracepoints, so don't take lack of support as a reason to
10410 give up on the trace run. */
10411 warning (_("Target does not support fast tracepoints, "
10412 "downloading %d as regular tracepoint"), b
->number
);
10414 else if (b
->type
== bp_static_tracepoint
)
10416 /* Only test for support at download time; we may not know
10417 target capabilities at definition time. */
10418 if (remote_supports_static_tracepoints ())
10420 struct static_tracepoint_marker marker
;
10422 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10423 strcat (buf
, ":S");
10425 error (_("Static tracepoint not valid during download"));
10428 /* Fast tracepoints are functionally identical to regular
10429 tracepoints, so don't take lack of support as a reason
10430 to give up on the trace run. */
10431 error (_("Target does not support static tracepoints"));
10433 /* If the tracepoint has a conditional, make it into an agent
10434 expression and append to the definition. */
10437 /* Only test support at download time, we may not know target
10438 capabilities at definition time. */
10439 if (remote_supports_cond_tracepoints ())
10441 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10442 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10443 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10445 pkt
= buf
+ strlen (buf
);
10446 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10447 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10449 do_cleanups (aexpr_chain
);
10452 warning (_("Target does not support conditional tracepoints, "
10453 "ignoring tp %d cond"), b
->number
);
10456 if (b
->commands
|| *default_collect
)
10459 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10460 if (strcmp (target_buf
, "OK"))
10461 error (_("Target does not support tracepoints."));
10463 /* do_single_steps (t); */
10466 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10468 QUIT
; /* Allow user to bail out with ^C. */
10469 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10470 b
->number
, addrbuf
, /* address */
10472 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10475 remote_get_noisy_reply (&target_buf
,
10477 if (strcmp (target_buf
, "OK"))
10478 error (_("Error on target while setting tracepoints."));
10481 if (stepping_actions
)
10483 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10485 QUIT
; /* Allow user to bail out with ^C. */
10486 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10487 b
->number
, addrbuf
, /* address */
10488 ((ndx
== 0) ? "S" : ""),
10489 stepping_actions
[ndx
],
10490 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10492 remote_get_noisy_reply (&target_buf
,
10494 if (strcmp (target_buf
, "OK"))
10495 error (_("Error on target while setting tracepoints."));
10499 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10502 if (b
->addr_string
)
10504 strcpy (buf
, "QTDPsrc:");
10505 encode_source_string (b
->number
, loc
->address
,
10506 "at", b
->addr_string
, buf
+ strlen (buf
),
10507 2048 - strlen (buf
));
10510 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10511 if (strcmp (target_buf
, "OK"))
10512 warning (_("Target does not support source download."));
10514 if (b
->cond_string
)
10516 strcpy (buf
, "QTDPsrc:");
10517 encode_source_string (b
->number
, loc
->address
,
10518 "cond", b
->cond_string
, buf
+ strlen (buf
),
10519 2048 - strlen (buf
));
10521 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10522 if (strcmp (target_buf
, "OK"))
10523 warning (_("Target does not support source download."));
10525 remote_download_command_source (b
->number
, loc
->address
,
10526 breakpoint_commands (b
));
10529 do_cleanups (old_chain
);
10533 remote_can_download_tracepoint (void)
10535 struct remote_state
*rs
= get_remote_state ();
10536 struct trace_status
*ts
;
10539 /* Don't try to install tracepoints until we've relocated our
10540 symbols, and fetched and merged the target's tracepoint list with
10542 if (rs
->starting_up
)
10545 ts
= current_trace_status ();
10546 status
= remote_get_trace_status (ts
);
10548 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10551 /* If we are in a tracing experiment, but remote stub doesn't support
10552 installing tracepoint in trace, we have to return. */
10553 if (!remote_supports_install_in_trace ())
10561 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10563 struct remote_state
*rs
= get_remote_state ();
10566 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10567 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10569 p
= rs
->buf
+ strlen (rs
->buf
);
10570 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10571 error (_("Trace state variable name too long for tsv definition packet"));
10572 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10575 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10576 if (*target_buf
== '\0')
10577 error (_("Target does not support this command."));
10578 if (strcmp (target_buf
, "OK") != 0)
10579 error (_("Error on target while downloading trace state variable."));
10583 remote_enable_tracepoint (struct bp_location
*location
)
10585 struct remote_state
*rs
= get_remote_state ();
10588 sprintf_vma (addr_buf
, location
->address
);
10589 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10590 location
->owner
->number
, addr_buf
);
10592 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10593 if (*rs
->buf
== '\0')
10594 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10595 if (strcmp (rs
->buf
, "OK") != 0)
10596 error (_("Error on target while enabling tracepoint."));
10600 remote_disable_tracepoint (struct bp_location
*location
)
10602 struct remote_state
*rs
= get_remote_state ();
10605 sprintf_vma (addr_buf
, location
->address
);
10606 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10607 location
->owner
->number
, addr_buf
);
10609 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10610 if (*rs
->buf
== '\0')
10611 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10612 if (strcmp (rs
->buf
, "OK") != 0)
10613 error (_("Error on target while disabling tracepoint."));
10617 remote_trace_set_readonly_regions (void)
10621 bfd_size_type size
;
10627 return; /* No information to give. */
10629 strcpy (target_buf
, "QTro");
10630 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10632 char tmp1
[40], tmp2
[40];
10635 if ((s
->flags
& SEC_LOAD
) == 0 ||
10636 /* (s->flags & SEC_CODE) == 0 || */
10637 (s
->flags
& SEC_READONLY
) == 0)
10641 vma
= bfd_get_section_vma (abfd
, s
);
10642 size
= bfd_get_section_size (s
);
10643 sprintf_vma (tmp1
, vma
);
10644 sprintf_vma (tmp2
, vma
+ size
);
10645 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10646 if (offset
+ sec_length
+ 1 > target_buf_size
)
10648 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10651 Too many sections for read-only sections definition packet."));
10654 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10656 offset
+= sec_length
;
10660 putpkt (target_buf
);
10661 getpkt (&target_buf
, &target_buf_size
, 0);
10666 remote_trace_start (void)
10668 putpkt ("QTStart");
10669 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10670 if (*target_buf
== '\0')
10671 error (_("Target does not support this command."));
10672 if (strcmp (target_buf
, "OK") != 0)
10673 error (_("Bogus reply from target: %s"), target_buf
);
10677 remote_get_trace_status (struct trace_status
*ts
)
10679 /* Initialize it just to avoid a GCC false warning. */
10681 /* FIXME we need to get register block size some other way. */
10682 extern int trace_regblock_size
;
10683 volatile struct gdb_exception ex
;
10685 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10687 putpkt ("qTStatus");
10689 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10691 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10695 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10699 /* If the remote target doesn't do tracing, flag it. */
10703 /* We're working with a live target. */
10704 ts
->filename
= NULL
;
10707 error (_("Bogus trace status reply from target: %s"), target_buf
);
10709 /* Function 'parse_trace_status' sets default value of each field of
10710 'ts' at first, so we don't have to do it here. */
10711 parse_trace_status (p
, ts
);
10713 return ts
->running
;
10717 remote_get_tracepoint_status (struct breakpoint
*bp
,
10718 struct uploaded_tp
*utp
)
10720 struct remote_state
*rs
= get_remote_state ();
10722 struct bp_location
*loc
;
10723 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10724 size_t size
= get_remote_packet_size ();
10728 tp
->base
.hit_count
= 0;
10729 tp
->traceframe_usage
= 0;
10730 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10732 /* If the tracepoint was never downloaded, don't go asking for
10734 if (tp
->number_on_target
== 0)
10736 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10737 phex_nz (loc
->address
, 0));
10739 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10740 if (reply
&& *reply
)
10743 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10749 utp
->hit_count
= 0;
10750 utp
->traceframe_usage
= 0;
10751 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10752 phex_nz (utp
->addr
, 0));
10754 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10755 if (reply
&& *reply
)
10758 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10764 remote_trace_stop (void)
10767 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10768 if (*target_buf
== '\0')
10769 error (_("Target does not support this command."));
10770 if (strcmp (target_buf
, "OK") != 0)
10771 error (_("Bogus reply from target: %s"), target_buf
);
10775 remote_trace_find (enum trace_find_type type
, int num
,
10776 ULONGEST addr1
, ULONGEST addr2
,
10779 struct remote_state
*rs
= get_remote_state ();
10780 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10782 int target_frameno
= -1, target_tracept
= -1;
10784 /* Lookups other than by absolute frame number depend on the current
10785 trace selected, so make sure it is correct on the remote end
10787 if (type
!= tfind_number
)
10788 set_remote_traceframe ();
10791 strcpy (p
, "QTFrame:");
10792 p
= strchr (p
, '\0');
10796 xsnprintf (p
, endbuf
- p
, "%x", num
);
10799 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10802 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10805 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10806 phex_nz (addr2
, 0));
10808 case tfind_outside
:
10809 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10810 phex_nz (addr2
, 0));
10813 error (_("Unknown trace find type %d"), type
);
10817 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10818 if (*reply
== '\0')
10819 error (_("Target does not support this command."));
10821 while (reply
&& *reply
)
10826 target_frameno
= (int) strtol (p
, &reply
, 16);
10828 error (_("Unable to parse trace frame number"));
10829 /* Don't update our remote traceframe number cache on failure
10830 to select a remote traceframe. */
10831 if (target_frameno
== -1)
10836 target_tracept
= (int) strtol (p
, &reply
, 16);
10838 error (_("Unable to parse tracepoint number"));
10840 case 'O': /* "OK"? */
10841 if (reply
[1] == 'K' && reply
[2] == '\0')
10844 error (_("Bogus reply from target: %s"), reply
);
10847 error (_("Bogus reply from target: %s"), reply
);
10850 *tpp
= target_tracept
;
10852 remote_traceframe_number
= target_frameno
;
10853 return target_frameno
;
10857 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10859 struct remote_state
*rs
= get_remote_state ();
10863 set_remote_traceframe ();
10865 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10867 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10868 if (reply
&& *reply
)
10872 unpack_varlen_hex (reply
+ 1, &uval
);
10873 *val
= (LONGEST
) uval
;
10881 remote_save_trace_data (const char *filename
)
10883 struct remote_state
*rs
= get_remote_state ();
10887 strcpy (p
, "QTSave:");
10889 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10890 error (_("Remote file name too long for trace save packet"));
10891 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10894 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10895 if (*reply
== '\0')
10896 error (_("Target does not support this command."));
10897 if (strcmp (reply
, "OK") != 0)
10898 error (_("Bogus reply from target: %s"), reply
);
10902 /* This is basically a memory transfer, but needs to be its own packet
10903 because we don't know how the target actually organizes its trace
10904 memory, plus we want to be able to ask for as much as possible, but
10905 not be unhappy if we don't get as much as we ask for. */
10908 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10910 struct remote_state
*rs
= get_remote_state ();
10916 strcpy (p
, "qTBuffer:");
10918 p
+= hexnumstr (p
, offset
);
10920 p
+= hexnumstr (p
, len
);
10924 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10925 if (reply
&& *reply
)
10927 /* 'l' by itself means we're at the end of the buffer and
10928 there is nothing more to get. */
10932 /* Convert the reply into binary. Limit the number of bytes to
10933 convert according to our passed-in buffer size, rather than
10934 what was returned in the packet; if the target is
10935 unexpectedly generous and gives us a bigger reply than we
10936 asked for, we don't want to crash. */
10937 rslt
= hex2bin (target_buf
, buf
, len
);
10941 /* Something went wrong, flag as an error. */
10946 remote_set_disconnected_tracing (int val
)
10948 struct remote_state
*rs
= get_remote_state ();
10950 if (rs
->disconnected_tracing
)
10954 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10956 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10957 if (*reply
== '\0')
10958 error (_("Target does not support this command."));
10959 if (strcmp (reply
, "OK") != 0)
10960 error (_("Bogus reply from target: %s"), reply
);
10963 warning (_("Target does not support disconnected tracing."));
10967 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10969 struct thread_info
*info
= find_thread_ptid (ptid
);
10971 if (info
&& info
->private)
10972 return info
->private->core
;
10977 remote_set_circular_trace_buffer (int val
)
10979 struct remote_state
*rs
= get_remote_state ();
10982 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
10984 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10985 if (*reply
== '\0')
10986 error (_("Target does not support this command."));
10987 if (strcmp (reply
, "OK") != 0)
10988 error (_("Bogus reply from target: %s"), reply
);
10991 static struct traceframe_info
*
10992 remote_traceframe_info (void)
10996 text
= target_read_stralloc (¤t_target
,
10997 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11000 struct traceframe_info
*info
;
11001 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11003 info
= parse_traceframe_info (text
);
11004 do_cleanups (back_to
);
11011 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11012 instruction on which a fast tracepoint may be placed. Returns -1
11013 if the packet is not supported, and 0 if the minimum instruction
11014 length is unknown. */
11017 remote_get_min_fast_tracepoint_insn_len (void)
11019 struct remote_state
*rs
= get_remote_state ();
11022 /* If we're not debugging a process yet, the IPA can't be
11024 if (!target_has_execution
)
11027 /* Make sure the remote is pointing at the right process. */
11028 set_general_process ();
11030 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11032 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11033 if (*reply
== '\0')
11037 ULONGEST min_insn_len
;
11039 unpack_varlen_hex (reply
, &min_insn_len
);
11041 return (int) min_insn_len
;
11046 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
11048 struct remote_state
*rs
= get_remote_state ();
11050 char *buf
= rs
->buf
;
11051 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11054 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11057 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11058 nbytes
= bin2hex (user
, buf
, 0);
11064 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11065 nbytes
= bin2hex (notes
, buf
, 0);
11071 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11072 nbytes
= bin2hex (stop_notes
, buf
, 0);
11076 /* Ensure the buffer is terminated. */
11080 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11081 if (*reply
== '\0')
11084 if (strcmp (reply
, "OK") != 0)
11085 error (_("Bogus reply from target: %s"), reply
);
11091 remote_use_agent (int use
)
11093 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11095 struct remote_state
*rs
= get_remote_state ();
11097 /* If the stub supports QAgent. */
11098 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11100 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11102 if (strcmp (rs
->buf
, "OK") == 0)
11113 remote_can_use_agent (void)
11115 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11119 init_remote_ops (void)
11121 remote_ops
.to_shortname
= "remote";
11122 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11123 remote_ops
.to_doc
=
11124 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11125 Specify the serial device it is connected to\n\
11126 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11127 remote_ops
.to_open
= remote_open
;
11128 remote_ops
.to_close
= remote_close
;
11129 remote_ops
.to_detach
= remote_detach
;
11130 remote_ops
.to_disconnect
= remote_disconnect
;
11131 remote_ops
.to_resume
= remote_resume
;
11132 remote_ops
.to_wait
= remote_wait
;
11133 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11134 remote_ops
.to_store_registers
= remote_store_registers
;
11135 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11136 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11137 remote_ops
.to_files_info
= remote_files_info
;
11138 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11139 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11140 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11141 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11142 remote_ops
.to_watchpoint_addr_within_range
=
11143 remote_watchpoint_addr_within_range
;
11144 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11145 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11146 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11147 remote_ops
.to_region_ok_for_hw_watchpoint
11148 = remote_region_ok_for_hw_watchpoint
;
11149 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11150 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11151 remote_ops
.to_kill
= remote_kill
;
11152 remote_ops
.to_load
= generic_load
;
11153 remote_ops
.to_mourn_inferior
= remote_mourn
;
11154 remote_ops
.to_pass_signals
= remote_pass_signals
;
11155 remote_ops
.to_program_signals
= remote_program_signals
;
11156 remote_ops
.to_thread_alive
= remote_thread_alive
;
11157 remote_ops
.to_find_new_threads
= remote_threads_info
;
11158 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11159 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11160 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11161 remote_ops
.to_stop
= remote_stop
;
11162 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11163 remote_ops
.to_rcmd
= remote_rcmd
;
11164 remote_ops
.to_log_command
= serial_log_command
;
11165 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11166 remote_ops
.to_stratum
= process_stratum
;
11167 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11168 remote_ops
.to_has_memory
= default_child_has_memory
;
11169 remote_ops
.to_has_stack
= default_child_has_stack
;
11170 remote_ops
.to_has_registers
= default_child_has_registers
;
11171 remote_ops
.to_has_execution
= default_child_has_execution
;
11172 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11173 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11174 remote_ops
.to_magic
= OPS_MAGIC
;
11175 remote_ops
.to_memory_map
= remote_memory_map
;
11176 remote_ops
.to_flash_erase
= remote_flash_erase
;
11177 remote_ops
.to_flash_done
= remote_flash_done
;
11178 remote_ops
.to_read_description
= remote_read_description
;
11179 remote_ops
.to_search_memory
= remote_search_memory
;
11180 remote_ops
.to_can_async_p
= remote_can_async_p
;
11181 remote_ops
.to_is_async_p
= remote_is_async_p
;
11182 remote_ops
.to_async
= remote_async
;
11183 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11184 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11185 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11186 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11187 remote_ops
.to_supports_disable_randomization
11188 = remote_supports_disable_randomization
;
11189 remote_ops
.to_fileio_open
= remote_hostio_open
;
11190 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11191 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11192 remote_ops
.to_fileio_close
= remote_hostio_close
;
11193 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11194 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11195 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11196 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11197 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11198 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11199 remote_ops
.to_trace_init
= remote_trace_init
;
11200 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11201 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11202 remote_ops
.to_download_trace_state_variable
11203 = remote_download_trace_state_variable
;
11204 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11205 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11206 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11207 remote_ops
.to_trace_start
= remote_trace_start
;
11208 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11209 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11210 remote_ops
.to_trace_stop
= remote_trace_stop
;
11211 remote_ops
.to_trace_find
= remote_trace_find
;
11212 remote_ops
.to_get_trace_state_variable_value
11213 = remote_get_trace_state_variable_value
;
11214 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11215 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11216 remote_ops
.to_upload_trace_state_variables
11217 = remote_upload_trace_state_variables
;
11218 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11219 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11220 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11221 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11222 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11223 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11224 remote_ops
.to_verify_memory
= remote_verify_memory
;
11225 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11226 remote_ops
.to_set_permissions
= remote_set_permissions
;
11227 remote_ops
.to_static_tracepoint_marker_at
11228 = remote_static_tracepoint_marker_at
;
11229 remote_ops
.to_static_tracepoint_markers_by_strid
11230 = remote_static_tracepoint_markers_by_strid
;
11231 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11232 remote_ops
.to_use_agent
= remote_use_agent
;
11233 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11236 /* Set up the extended remote vector by making a copy of the standard
11237 remote vector and adding to it. */
11240 init_extended_remote_ops (void)
11242 extended_remote_ops
= remote_ops
;
11244 extended_remote_ops
.to_shortname
= "extended-remote";
11245 extended_remote_ops
.to_longname
=
11246 "Extended remote serial target in gdb-specific protocol";
11247 extended_remote_ops
.to_doc
=
11248 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11249 Specify the serial device it is connected to (e.g. /dev/ttya).";
11250 extended_remote_ops
.to_open
= extended_remote_open
;
11251 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11252 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11253 extended_remote_ops
.to_detach
= extended_remote_detach
;
11254 extended_remote_ops
.to_attach
= extended_remote_attach
;
11255 extended_remote_ops
.to_kill
= extended_remote_kill
;
11256 extended_remote_ops
.to_supports_disable_randomization
11257 = extended_remote_supports_disable_randomization
;
11261 remote_can_async_p (void)
11263 if (!target_async_permitted
)
11264 /* We only enable async when the user specifically asks for it. */
11267 /* We're async whenever the serial device is. */
11268 return serial_can_async_p (remote_desc
);
11272 remote_is_async_p (void)
11274 if (!target_async_permitted
)
11275 /* We only enable async when the user specifically asks for it. */
11278 /* We're async whenever the serial device is. */
11279 return serial_is_async_p (remote_desc
);
11282 /* Pass the SERIAL event on and up to the client. One day this code
11283 will be able to delay notifying the client of an event until the
11284 point where an entire packet has been received. */
11286 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11288 static void *async_client_context
;
11289 static serial_event_ftype remote_async_serial_handler
;
11292 remote_async_serial_handler (struct serial
*scb
, void *context
)
11294 /* Don't propogate error information up to the client. Instead let
11295 the client find out about the error by querying the target. */
11296 async_client_callback (INF_REG_EVENT
, async_client_context
);
11300 remote_async_inferior_event_handler (gdb_client_data data
)
11302 inferior_event_handler (INF_REG_EVENT
, NULL
);
11306 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11307 void *context
), void *context
)
11309 if (callback
!= NULL
)
11311 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11312 async_client_callback
= callback
;
11313 async_client_context
= context
;
11316 serial_async (remote_desc
, NULL
, NULL
);
11320 set_remote_cmd (char *args
, int from_tty
)
11322 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11326 show_remote_cmd (char *args
, int from_tty
)
11328 /* We can't just use cmd_show_list here, because we want to skip
11329 the redundant "show remote Z-packet" and the legacy aliases. */
11330 struct cleanup
*showlist_chain
;
11331 struct cmd_list_element
*list
= remote_show_cmdlist
;
11332 struct ui_out
*uiout
= current_uiout
;
11334 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11335 for (; list
!= NULL
; list
= list
->next
)
11336 if (strcmp (list
->name
, "Z-packet") == 0)
11338 else if (list
->type
== not_set_cmd
)
11339 /* Alias commands are exactly like the original, except they
11340 don't have the normal type. */
11344 struct cleanup
*option_chain
11345 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11347 ui_out_field_string (uiout
, "name", list
->name
);
11348 ui_out_text (uiout
, ": ");
11349 if (list
->type
== show_cmd
)
11350 do_show_command ((char *) NULL
, from_tty
, list
);
11352 cmd_func (list
, NULL
, from_tty
);
11353 /* Close the tuple. */
11354 do_cleanups (option_chain
);
11357 /* Close the tuple. */
11358 do_cleanups (showlist_chain
);
11362 /* Function to be called whenever a new objfile (shlib) is detected. */
11364 remote_new_objfile (struct objfile
*objfile
)
11366 if (remote_desc
!= 0) /* Have a remote connection. */
11367 remote_check_symbols (objfile
);
11370 /* Pull all the tracepoints defined on the target and create local
11371 data structures representing them. We don't want to create real
11372 tracepoints yet, we don't want to mess up the user's existing
11376 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11378 struct remote_state
*rs
= get_remote_state ();
11381 /* Ask for a first packet of tracepoint definition. */
11383 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11385 while (*p
&& *p
!= 'l')
11387 parse_tracepoint_definition (p
, utpp
);
11388 /* Ask for another packet of tracepoint definition. */
11390 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11397 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11399 struct remote_state
*rs
= get_remote_state ();
11402 /* Ask for a first packet of variable definition. */
11404 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11406 while (*p
&& *p
!= 'l')
11408 parse_tsv_definition (p
, utsvp
);
11409 /* Ask for another packet of variable definition. */
11411 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11418 _initialize_remote (void)
11420 struct remote_state
*rs
;
11421 struct cmd_list_element
*cmd
;
11424 /* architecture specific data */
11425 remote_gdbarch_data_handle
=
11426 gdbarch_data_register_post_init (init_remote_state
);
11427 remote_g_packet_data_handle
=
11428 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11430 /* Initialize the per-target state. At the moment there is only one
11431 of these, not one per target. Only one target is active at a
11432 time. The default buffer size is unimportant; it will be expanded
11433 whenever a larger buffer is needed. */
11434 rs
= get_remote_state_raw ();
11435 rs
->buf_size
= 400;
11436 rs
->buf
= xmalloc (rs
->buf_size
);
11438 init_remote_ops ();
11439 add_target (&remote_ops
);
11441 init_extended_remote_ops ();
11442 add_target (&extended_remote_ops
);
11444 /* Hook into new objfile notification. */
11445 observer_attach_new_objfile (remote_new_objfile
);
11446 /* We're no longer interested in notification events of an inferior
11448 observer_attach_inferior_exit (discard_pending_stop_replies
);
11450 /* Set up signal handlers. */
11451 sigint_remote_token
=
11452 create_async_signal_handler (async_remote_interrupt
, NULL
);
11453 sigint_remote_twice_token
=
11454 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11457 init_remote_threadtests ();
11460 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11461 /* set/show remote ... */
11463 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11464 Remote protocol specific variables\n\
11465 Configure various remote-protocol specific variables such as\n\
11466 the packets being used"),
11467 &remote_set_cmdlist
, "set remote ",
11468 0 /* allow-unknown */, &setlist
);
11469 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11470 Remote protocol specific variables\n\
11471 Configure various remote-protocol specific variables such as\n\
11472 the packets being used"),
11473 &remote_show_cmdlist
, "show remote ",
11474 0 /* allow-unknown */, &showlist
);
11476 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11477 Compare section data on target to the exec file.\n\
11478 Argument is a single section name (default: all loaded sections)."),
11481 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11482 Send an arbitrary packet to a remote target.\n\
11483 maintenance packet TEXT\n\
11484 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11485 this command sends the string TEXT to the inferior, and displays the\n\
11486 response packet. GDB supplies the initial `$' character, and the\n\
11487 terminating `#' character and checksum."),
11490 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11491 Set whether to send break if interrupted."), _("\
11492 Show whether to send break if interrupted."), _("\
11493 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11494 set_remotebreak
, show_remotebreak
,
11495 &setlist
, &showlist
);
11496 cmd_name
= "remotebreak";
11497 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11498 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11499 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11500 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11501 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11503 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11504 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11506 Set interrupt sequence to remote target."), _("\
11507 Show interrupt sequence to remote target."), _("\
11508 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11509 NULL
, show_interrupt_sequence
,
11510 &remote_set_cmdlist
,
11511 &remote_show_cmdlist
);
11513 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11514 &interrupt_on_connect
, _("\
11515 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11516 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11517 If set, interrupt sequence is sent to remote target."),
11519 &remote_set_cmdlist
, &remote_show_cmdlist
);
11521 /* Install commands for configuring memory read/write packets. */
11523 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11524 Set the maximum number of bytes per memory write packet (deprecated)."),
11526 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11527 Show the maximum number of bytes per memory write packet (deprecated)."),
11529 add_cmd ("memory-write-packet-size", no_class
,
11530 set_memory_write_packet_size
, _("\
11531 Set the maximum number of bytes per memory-write packet.\n\
11532 Specify the number of bytes in a packet or 0 (zero) for the\n\
11533 default packet size. The actual limit is further reduced\n\
11534 dependent on the target. Specify ``fixed'' to disable the\n\
11535 further restriction and ``limit'' to enable that restriction."),
11536 &remote_set_cmdlist
);
11537 add_cmd ("memory-read-packet-size", no_class
,
11538 set_memory_read_packet_size
, _("\
11539 Set the maximum number of bytes per memory-read packet.\n\
11540 Specify the number of bytes in a packet or 0 (zero) for the\n\
11541 default packet size. The actual limit is further reduced\n\
11542 dependent on the target. Specify ``fixed'' to disable the\n\
11543 further restriction and ``limit'' to enable that restriction."),
11544 &remote_set_cmdlist
);
11545 add_cmd ("memory-write-packet-size", no_class
,
11546 show_memory_write_packet_size
,
11547 _("Show the maximum number of bytes per memory-write packet."),
11548 &remote_show_cmdlist
);
11549 add_cmd ("memory-read-packet-size", no_class
,
11550 show_memory_read_packet_size
,
11551 _("Show the maximum number of bytes per memory-read packet."),
11552 &remote_show_cmdlist
);
11554 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11555 &remote_hw_watchpoint_limit
, _("\
11556 Set the maximum number of target hardware watchpoints."), _("\
11557 Show the maximum number of target hardware watchpoints."), _("\
11558 Specify a negative limit for unlimited."),
11559 NULL
, NULL
, /* FIXME: i18n: The maximum
11560 number of target hardware
11561 watchpoints is %s. */
11562 &remote_set_cmdlist
, &remote_show_cmdlist
);
11563 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11564 &remote_hw_watchpoint_length_limit
, _("\
11565 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11566 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11567 Specify a negative limit for unlimited."),
11568 NULL
, NULL
, /* FIXME: i18n: The maximum
11569 length (in bytes) of a target
11570 hardware watchpoint is %s. */
11571 &remote_set_cmdlist
, &remote_show_cmdlist
);
11572 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11573 &remote_hw_breakpoint_limit
, _("\
11574 Set the maximum number of target hardware breakpoints."), _("\
11575 Show the maximum number of target hardware breakpoints."), _("\
11576 Specify a negative limit for unlimited."),
11577 NULL
, NULL
, /* FIXME: i18n: The maximum
11578 number of target hardware
11579 breakpoints is %s. */
11580 &remote_set_cmdlist
, &remote_show_cmdlist
);
11582 add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure
,
11583 &remote_address_size
, _("\
11584 Set the maximum size of the address (in bits) in a memory packet."), _("\
11585 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11587 NULL
, /* FIXME: i18n: */
11588 &setlist
, &showlist
);
11590 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11591 "X", "binary-download", 1);
11593 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11594 "vCont", "verbose-resume", 0);
11596 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11597 "QPassSignals", "pass-signals", 0);
11599 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11600 "QProgramSignals", "program-signals", 0);
11602 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11603 "qSymbol", "symbol-lookup", 0);
11605 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11606 "P", "set-register", 1);
11608 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11609 "p", "fetch-register", 1);
11611 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11612 "Z0", "software-breakpoint", 0);
11614 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11615 "Z1", "hardware-breakpoint", 0);
11617 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11618 "Z2", "write-watchpoint", 0);
11620 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11621 "Z3", "read-watchpoint", 0);
11623 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11624 "Z4", "access-watchpoint", 0);
11626 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11627 "qXfer:auxv:read", "read-aux-vector", 0);
11629 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11630 "qXfer:features:read", "target-features", 0);
11632 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11633 "qXfer:libraries:read", "library-info", 0);
11635 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11636 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11638 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11639 "qXfer:memory-map:read", "memory-map", 0);
11641 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11642 "qXfer:spu:read", "read-spu-object", 0);
11644 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11645 "qXfer:spu:write", "write-spu-object", 0);
11647 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11648 "qXfer:osdata:read", "osdata", 0);
11650 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11651 "qXfer:threads:read", "threads", 0);
11653 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11654 "qXfer:siginfo:read", "read-siginfo-object", 0);
11656 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11657 "qXfer:siginfo:write", "write-siginfo-object", 0);
11659 add_packet_config_cmd
11660 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11661 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11663 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11664 "qXfer:uib:read", "unwind-info-block", 0);
11666 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11667 "qGetTLSAddr", "get-thread-local-storage-address",
11670 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11671 "qGetTIBAddr", "get-thread-information-block-address",
11674 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11675 "bc", "reverse-continue", 0);
11677 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11678 "bs", "reverse-step", 0);
11680 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11681 "qSupported", "supported-packets", 0);
11683 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11684 "qSearch:memory", "search-memory", 0);
11686 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11687 "vFile:open", "hostio-open", 0);
11689 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11690 "vFile:pread", "hostio-pread", 0);
11692 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11693 "vFile:pwrite", "hostio-pwrite", 0);
11695 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11696 "vFile:close", "hostio-close", 0);
11698 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11699 "vFile:unlink", "hostio-unlink", 0);
11701 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11702 "vFile:readlink", "hostio-readlink", 0);
11704 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11705 "vAttach", "attach", 0);
11707 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11710 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11711 "QStartNoAckMode", "noack", 0);
11713 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11714 "vKill", "kill", 0);
11716 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11717 "qAttached", "query-attached", 0);
11719 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11720 "ConditionalTracepoints",
11721 "conditional-tracepoints", 0);
11723 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11724 "ConditionalBreakpoints",
11725 "conditional-breakpoints", 0);
11727 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11728 "BreakpointCommands",
11729 "breakpoint-commands", 0);
11731 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11732 "FastTracepoints", "fast-tracepoints", 0);
11734 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11735 "TracepointSource", "TracepointSource", 0);
11737 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11738 "QAllow", "allow", 0);
11740 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11741 "StaticTracepoints", "static-tracepoints", 0);
11743 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11744 "InstallInTrace", "install-in-trace", 0);
11746 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11747 "qXfer:statictrace:read", "read-sdata-object", 0);
11749 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11750 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11752 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11753 "QDisableRandomization", "disable-randomization", 0);
11755 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11756 "QAgent", "agent", 0);
11758 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11759 Z sub-packet has its own set and show commands, but users may
11760 have sets to this variable in their .gdbinit files (or in their
11762 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11763 &remote_Z_packet_detect
, _("\
11764 Set use of remote protocol `Z' packets"), _("\
11765 Show use of remote protocol `Z' packets "), _("\
11766 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11768 set_remote_protocol_Z_packet_cmd
,
11769 show_remote_protocol_Z_packet_cmd
,
11770 /* FIXME: i18n: Use of remote protocol
11771 `Z' packets is %s. */
11772 &remote_set_cmdlist
, &remote_show_cmdlist
);
11774 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11775 Manipulate files on the remote system\n\
11776 Transfer files to and from the remote target system."),
11777 &remote_cmdlist
, "remote ",
11778 0 /* allow-unknown */, &cmdlist
);
11780 add_cmd ("put", class_files
, remote_put_command
,
11781 _("Copy a local file to the remote system."),
11784 add_cmd ("get", class_files
, remote_get_command
,
11785 _("Copy a remote file to the local system."),
11788 add_cmd ("delete", class_files
, remote_delete_command
,
11789 _("Delete a remote file."),
11792 remote_exec_file
= xstrdup ("");
11793 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11794 &remote_exec_file
, _("\
11795 Set the remote pathname for \"run\""), _("\
11796 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11797 &remote_set_cmdlist
, &remote_show_cmdlist
);
11799 /* Eventually initialize fileio. See fileio.c */
11800 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11802 /* Take advantage of the fact that the LWP field is not used, to tag
11803 special ptids with it set to != 0. */
11804 magic_null_ptid
= ptid_build (42000, 1, -1);
11805 not_sent_ptid
= ptid_build (42000, 1, -2);
11806 any_thread_ptid
= ptid_build (42000, 1, 0);
11808 target_buf_size
= 2048;
11809 target_buf
= xmalloc (target_buf_size
);