1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2012 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 while (*bufp
++ == 'm') /* reply contains one or more TID */
2766 new_thread
= read_ptid (bufp
, &bufp
);
2767 if (!ptid_equal (new_thread
, null_ptid
))
2769 /* In non-stop mode, we assume new found threads
2770 are running until proven otherwise with a
2771 stop reply. In all-stop, we can only get
2772 here if all threads are stopped. */
2773 int running
= non_stop
? 1 : 0;
2775 remote_notice_new_inferior (new_thread
, running
);
2778 while (*bufp
++ == ','); /* comma-separated list */
2779 putpkt ("qsThreadInfo");
2780 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2787 /* Only qfThreadInfo is supported in non-stop mode. */
2791 /* Else fall back to old method based on jmetzler protocol. */
2792 use_threadinfo_query
= 0;
2793 remote_find_new_threads ();
2798 * Collect a descriptive string about the given thread.
2799 * The target may say anything it wants to about the thread
2800 * (typically info about its blocked / runnable state, name, etc.).
2801 * This string will appear in the info threads display.
2803 * Optional: targets are not required to implement this function.
2807 remote_threads_extra_info (struct thread_info
*tp
)
2809 struct remote_state
*rs
= get_remote_state ();
2813 struct gdb_ext_thread_info threadinfo
;
2814 static char display_buf
[100]; /* arbitrary... */
2815 int n
= 0; /* position in display_buf */
2817 if (remote_desc
== 0) /* paranoia */
2818 internal_error (__FILE__
, __LINE__
,
2819 _("remote_threads_extra_info"));
2821 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2822 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2823 /* This is the main thread which was added by GDB. The remote
2824 server doesn't know about it. */
2827 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2829 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2831 if (info
&& info
->private)
2832 return info
->private->extra
;
2837 if (use_threadextra_query
)
2840 char *endb
= rs
->buf
+ get_remote_packet_size ();
2842 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2844 write_ptid (b
, endb
, tp
->ptid
);
2847 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2848 if (rs
->buf
[0] != 0)
2850 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2851 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2852 display_buf
[result
] = '\0';
2857 /* If the above query fails, fall back to the old method. */
2858 use_threadextra_query
= 0;
2859 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2860 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2861 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2862 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2863 if (threadinfo
.active
)
2865 if (*threadinfo
.shortname
)
2866 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2867 " Name: %s,", threadinfo
.shortname
);
2868 if (*threadinfo
.display
)
2869 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2870 " State: %s,", threadinfo
.display
);
2871 if (*threadinfo
.more_display
)
2872 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2873 " Priority: %s", threadinfo
.more_display
);
2877 /* For purely cosmetic reasons, clear up trailing commas. */
2878 if (',' == display_buf
[n
-1])
2879 display_buf
[n
-1] = ' ';
2888 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2889 struct static_tracepoint_marker
*marker
)
2891 struct remote_state
*rs
= get_remote_state ();
2894 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2896 p
+= hexnumstr (p
, addr
);
2898 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2902 error (_("Remote failure reply: %s"), p
);
2906 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2913 static VEC(static_tracepoint_marker_p
) *
2914 remote_static_tracepoint_markers_by_strid (const char *strid
)
2916 struct remote_state
*rs
= get_remote_state ();
2917 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2918 struct static_tracepoint_marker
*marker
= NULL
;
2919 struct cleanup
*old_chain
;
2922 /* Ask for a first packet of static tracepoint marker
2925 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2928 error (_("Remote failure reply: %s"), p
);
2930 old_chain
= make_cleanup (free_current_marker
, &marker
);
2935 marker
= XCNEW (struct static_tracepoint_marker
);
2939 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2941 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2943 VEC_safe_push (static_tracepoint_marker_p
,
2949 release_static_tracepoint_marker (marker
);
2950 memset (marker
, 0, sizeof (*marker
));
2953 while (*p
++ == ','); /* comma-separated list */
2954 /* Ask for another packet of static tracepoint definition. */
2956 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2960 do_cleanups (old_chain
);
2965 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2968 remote_get_ada_task_ptid (long lwp
, long thread
)
2970 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2974 /* Restart the remote side; this is an extended protocol operation. */
2977 extended_remote_restart (void)
2979 struct remote_state
*rs
= get_remote_state ();
2981 /* Send the restart command; for reasons I don't understand the
2982 remote side really expects a number after the "R". */
2983 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2986 remote_fileio_reset ();
2989 /* Clean up connection to a remote debugger. */
2992 remote_close (int quitting
)
2994 if (remote_desc
== NULL
)
2995 return; /* already closed */
2997 /* Make sure we leave stdin registered in the event loop, and we
2998 don't leave the async SIGINT signal handler installed. */
2999 remote_terminal_ours ();
3001 serial_close (remote_desc
);
3004 /* We don't have a connection to the remote stub anymore. Get rid
3005 of all the inferiors and their threads we were controlling.
3006 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3007 will be unable to find the thread corresponding to (pid, 0, 0). */
3008 inferior_ptid
= null_ptid
;
3009 discard_all_inferiors ();
3011 /* Stop replies may from inferiors which are still unknown to GDB.
3012 We are closing the remote target, so we should discard
3013 everything, including the stop replies from GDB-unknown
3015 discard_pending_stop_replies (NULL
);
3017 if (remote_async_inferior_event_token
)
3018 delete_async_event_handler (&remote_async_inferior_event_token
);
3020 remote_notif_unregister_async_event_handler ();
3023 /* Query the remote side for the text, data and bss offsets. */
3028 struct remote_state
*rs
= get_remote_state ();
3031 int lose
, num_segments
= 0, do_sections
, do_segments
;
3032 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3033 struct section_offsets
*offs
;
3034 struct symfile_segment_data
*data
;
3036 if (symfile_objfile
== NULL
)
3039 putpkt ("qOffsets");
3040 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3043 if (buf
[0] == '\000')
3044 return; /* Return silently. Stub doesn't support
3048 warning (_("Remote failure reply: %s"), buf
);
3052 /* Pick up each field in turn. This used to be done with scanf, but
3053 scanf will make trouble if CORE_ADDR size doesn't match
3054 conversion directives correctly. The following code will work
3055 with any size of CORE_ADDR. */
3056 text_addr
= data_addr
= bss_addr
= 0;
3060 if (strncmp (ptr
, "Text=", 5) == 0)
3063 /* Don't use strtol, could lose on big values. */
3064 while (*ptr
&& *ptr
!= ';')
3065 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3067 if (strncmp (ptr
, ";Data=", 6) == 0)
3070 while (*ptr
&& *ptr
!= ';')
3071 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3076 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3079 while (*ptr
&& *ptr
!= ';')
3080 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3082 if (bss_addr
!= data_addr
)
3083 warning (_("Target reported unsupported offsets: %s"), buf
);
3088 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3091 /* Don't use strtol, could lose on big values. */
3092 while (*ptr
&& *ptr
!= ';')
3093 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3096 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3099 while (*ptr
&& *ptr
!= ';')
3100 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3108 error (_("Malformed response to offset query, %s"), buf
);
3109 else if (*ptr
!= '\0')
3110 warning (_("Target reported unsupported offsets: %s"), buf
);
3112 offs
= ((struct section_offsets
*)
3113 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3114 memcpy (offs
, symfile_objfile
->section_offsets
,
3115 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3117 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3118 do_segments
= (data
!= NULL
);
3119 do_sections
= num_segments
== 0;
3121 if (num_segments
> 0)
3123 segments
[0] = text_addr
;
3124 segments
[1] = data_addr
;
3126 /* If we have two segments, we can still try to relocate everything
3127 by assuming that the .text and .data offsets apply to the whole
3128 text and data segments. Convert the offsets given in the packet
3129 to base addresses for symfile_map_offsets_to_segments. */
3130 else if (data
&& data
->num_segments
== 2)
3132 segments
[0] = data
->segment_bases
[0] + text_addr
;
3133 segments
[1] = data
->segment_bases
[1] + data_addr
;
3136 /* If the object file has only one segment, assume that it is text
3137 rather than data; main programs with no writable data are rare,
3138 but programs with no code are useless. Of course the code might
3139 have ended up in the data segment... to detect that we would need
3140 the permissions here. */
3141 else if (data
&& data
->num_segments
== 1)
3143 segments
[0] = data
->segment_bases
[0] + text_addr
;
3146 /* There's no way to relocate by segment. */
3152 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3153 offs
, num_segments
, segments
);
3155 if (ret
== 0 && !do_sections
)
3156 error (_("Can not handle qOffsets TextSeg "
3157 "response with this symbol file"));
3164 free_symfile_segment_data (data
);
3168 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3170 /* This is a temporary kludge to force data and bss to use the
3171 same offsets because that's what nlmconv does now. The real
3172 solution requires changes to the stub and remote.c that I
3173 don't have time to do right now. */
3175 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3176 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3179 objfile_relocate (symfile_objfile
, offs
);
3182 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3183 threads we know are stopped already. This is used during the
3184 initial remote connection in non-stop mode --- threads that are
3185 reported as already being stopped are left stopped. */
3188 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3190 /* If we have a stop reply for this thread, it must be stopped. */
3191 if (peek_stop_reply (thread
->ptid
))
3192 set_stop_requested (thread
->ptid
, 1);
3197 /* Send interrupt_sequence to remote target. */
3199 send_interrupt_sequence (void)
3201 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3202 serial_write (remote_desc
, "\x03", 1);
3203 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3204 serial_send_break (remote_desc
);
3205 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3207 serial_send_break (remote_desc
);
3208 serial_write (remote_desc
, "g", 1);
3211 internal_error (__FILE__
, __LINE__
,
3212 _("Invalid value for interrupt_sequence_mode: %s."),
3213 interrupt_sequence_mode
);
3216 /* Query the remote target for which is the current thread/process,
3217 add it to our tables, and update INFERIOR_PTID. The caller is
3218 responsible for setting the state such that the remote end is ready
3219 to return the current thread. */
3222 add_current_inferior_and_thread (void)
3224 struct remote_state
*rs
= get_remote_state ();
3228 inferior_ptid
= null_ptid
;
3230 /* Now, if we have thread information, update inferior_ptid. */
3231 ptid
= remote_current_thread (inferior_ptid
);
3232 if (!ptid_equal (ptid
, null_ptid
))
3234 if (!remote_multi_process_p (rs
))
3237 inferior_ptid
= ptid
;
3241 /* Without this, some commands which require an active target
3242 (such as kill) won't work. This variable serves (at least)
3243 double duty as both the pid of the target process (if it has
3244 such), and as a flag indicating that a target is active. */
3245 inferior_ptid
= magic_null_ptid
;
3249 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3251 /* Add the main thread. */
3252 add_thread_silent (inferior_ptid
);
3256 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3258 struct remote_state
*rs
= get_remote_state ();
3259 struct packet_config
*noack_config
;
3260 char *wait_status
= NULL
;
3262 immediate_quit
++; /* Allow user to interrupt it. */
3265 if (interrupt_on_connect
)
3266 send_interrupt_sequence ();
3268 /* Ack any packet which the remote side has already sent. */
3269 serial_write (remote_desc
, "+", 1);
3271 /* Signal other parts that we're going through the initial setup,
3272 and so things may not be stable yet. */
3273 rs
->starting_up
= 1;
3275 /* The first packet we send to the target is the optional "supported
3276 packets" request. If the target can answer this, it will tell us
3277 which later probes to skip. */
3278 remote_query_supported ();
3280 /* If the stub wants to get a QAllow, compose one and send it. */
3281 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3282 remote_set_permissions ();
3284 /* Next, we possibly activate noack mode.
3286 If the QStartNoAckMode packet configuration is set to AUTO,
3287 enable noack mode if the stub reported a wish for it with
3290 If set to TRUE, then enable noack mode even if the stub didn't
3291 report it in qSupported. If the stub doesn't reply OK, the
3292 session ends with an error.
3294 If FALSE, then don't activate noack mode, regardless of what the
3295 stub claimed should be the default with qSupported. */
3297 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3299 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3300 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3301 && noack_config
->support
== PACKET_ENABLE
))
3303 putpkt ("QStartNoAckMode");
3304 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3305 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3311 /* Tell the remote that we are using the extended protocol. */
3313 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3316 /* Let the target know which signals it is allowed to pass down to
3318 update_signals_program_target ();
3320 /* Next, if the target can specify a description, read it. We do
3321 this before anything involving memory or registers. */
3322 target_find_description ();
3324 /* Next, now that we know something about the target, update the
3325 address spaces in the program spaces. */
3326 update_address_spaces ();
3328 /* On OSs where the list of libraries is global to all
3329 processes, we fetch them early. */
3330 if (gdbarch_has_global_solist (target_gdbarch ()))
3331 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3335 if (!rs
->non_stop_aware
)
3336 error (_("Non-stop mode requested, but remote "
3337 "does not support non-stop"));
3339 putpkt ("QNonStop:1");
3340 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3342 if (strcmp (rs
->buf
, "OK") != 0)
3343 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3345 /* Find about threads and processes the stub is already
3346 controlling. We default to adding them in the running state.
3347 The '?' query below will then tell us about which threads are
3349 remote_threads_info (target
);
3351 else if (rs
->non_stop_aware
)
3353 /* Don't assume that the stub can operate in all-stop mode.
3354 Request it explicitly. */
3355 putpkt ("QNonStop:0");
3356 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3358 if (strcmp (rs
->buf
, "OK") != 0)
3359 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3362 /* Check whether the target is running now. */
3364 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3370 struct inferior
*inf
;
3372 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3375 error (_("The target is not running (try extended-remote?)"));
3377 /* We're connected, but not running. Drop out before we
3378 call start_remote. */
3379 rs
->starting_up
= 0;
3384 /* Save the reply for later. */
3385 wait_status
= alloca (strlen (rs
->buf
) + 1);
3386 strcpy (wait_status
, rs
->buf
);
3389 /* Let the stub know that we want it to return the thread. */
3390 set_continue_thread (minus_one_ptid
);
3392 add_current_inferior_and_thread ();
3394 /* init_wait_for_inferior should be called before get_offsets in order
3395 to manage `inserted' flag in bp loc in a correct state.
3396 breakpoint_init_inferior, called from init_wait_for_inferior, set
3397 `inserted' flag to 0, while before breakpoint_re_set, called from
3398 start_remote, set `inserted' flag to 1. In the initialization of
3399 inferior, breakpoint_init_inferior should be called first, and then
3400 breakpoint_re_set can be called. If this order is broken, state of
3401 `inserted' flag is wrong, and cause some problems on breakpoint
3403 init_wait_for_inferior ();
3405 get_offsets (); /* Get text, data & bss offsets. */
3407 /* If we could not find a description using qXfer, and we know
3408 how to do it some other way, try again. This is not
3409 supported for non-stop; it could be, but it is tricky if
3410 there are no stopped threads when we connect. */
3411 if (remote_read_description_p (target
)
3412 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3414 target_clear_description ();
3415 target_find_description ();
3418 /* Use the previously fetched status. */
3419 gdb_assert (wait_status
!= NULL
);
3420 strcpy (rs
->buf
, wait_status
);
3421 rs
->cached_wait_status
= 1;
3424 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3428 /* Clear WFI global state. Do this before finding about new
3429 threads and inferiors, and setting the current inferior.
3430 Otherwise we would clear the proceed status of the current
3431 inferior when we want its stop_soon state to be preserved
3432 (see notice_new_inferior). */
3433 init_wait_for_inferior ();
3435 /* In non-stop, we will either get an "OK", meaning that there
3436 are no stopped threads at this time; or, a regular stop
3437 reply. In the latter case, there may be more than one thread
3438 stopped --- we pull them all out using the vStopped
3440 if (strcmp (rs
->buf
, "OK") != 0)
3442 struct notif_client
*notif
= ¬if_client_stop
;
3444 /* remote_notif_get_pending_replies acks this one, and gets
3446 notif_client_stop
.pending_event
3447 = remote_notif_parse (notif
, rs
->buf
);
3448 remote_notif_get_pending_events (notif
);
3450 /* Make sure that threads that were stopped remain
3452 iterate_over_threads (set_stop_requested_callback
, NULL
);
3455 if (target_can_async_p ())
3456 target_async (inferior_event_handler
, 0);
3458 if (thread_count () == 0)
3461 error (_("The target is not running (try extended-remote?)"));
3463 /* We're connected, but not running. Drop out before we
3464 call start_remote. */
3465 rs
->starting_up
= 0;
3469 /* Let the stub know that we want it to return the thread. */
3471 /* Force the stub to choose a thread. */
3472 set_general_thread (null_ptid
);
3475 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3476 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3477 error (_("remote didn't report the current thread in non-stop mode"));
3479 get_offsets (); /* Get text, data & bss offsets. */
3481 /* In non-stop mode, any cached wait status will be stored in
3482 the stop reply queue. */
3483 gdb_assert (wait_status
== NULL
);
3485 /* Report all signals during attach/startup. */
3486 remote_pass_signals (0, NULL
);
3489 /* If we connected to a live target, do some additional setup. */
3490 if (target_has_execution
)
3492 if (exec_bfd
) /* No use without an exec file. */
3493 remote_check_symbols (symfile_objfile
);
3496 /* Possibly the target has been engaged in a trace run started
3497 previously; find out where things are at. */
3498 if (remote_get_trace_status (current_trace_status ()) != -1)
3500 struct uploaded_tp
*uploaded_tps
= NULL
;
3501 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3503 if (current_trace_status ()->running
)
3504 printf_filtered (_("Trace is already running on the target.\n"));
3506 /* Get trace state variables first, they may be checked when
3507 parsing uploaded commands. */
3509 remote_upload_trace_state_variables (&uploaded_tsvs
);
3511 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3513 remote_upload_tracepoints (&uploaded_tps
);
3515 merge_uploaded_tracepoints (&uploaded_tps
);
3518 /* The thread and inferior lists are now synchronized with the
3519 target, our symbols have been relocated, and we're merged the
3520 target's tracepoints with ours. We're done with basic start
3522 rs
->starting_up
= 0;
3524 /* If breakpoints are global, insert them now. */
3525 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3526 && breakpoints_always_inserted_mode ())
3527 insert_breakpoints ();
3530 /* Open a connection to a remote debugger.
3531 NAME is the filename used for communication. */
3534 remote_open (char *name
, int from_tty
)
3536 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3539 /* Open a connection to a remote debugger using the extended
3540 remote gdb protocol. NAME is the filename used for communication. */
3543 extended_remote_open (char *name
, int from_tty
)
3545 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3548 /* Generic code for opening a connection to a remote target. */
3551 init_all_packet_configs (void)
3555 for (i
= 0; i
< PACKET_MAX
; i
++)
3556 update_packet_config (&remote_protocol_packets
[i
]);
3559 /* Symbol look-up. */
3562 remote_check_symbols (struct objfile
*objfile
)
3564 struct remote_state
*rs
= get_remote_state ();
3565 char *msg
, *reply
, *tmp
;
3566 struct minimal_symbol
*sym
;
3569 /* The remote side has no concept of inferiors that aren't running
3570 yet, it only knows about running processes. If we're connected
3571 but our current inferior is not running, we should not invite the
3572 remote target to request symbol lookups related to its
3573 (unrelated) current process. */
3574 if (!target_has_execution
)
3577 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3580 /* Make sure the remote is pointing at the right process. Note
3581 there's no way to select "no process". */
3582 set_general_process ();
3584 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3585 because we need both at the same time. */
3586 msg
= alloca (get_remote_packet_size ());
3588 /* Invite target to request symbol lookups. */
3590 putpkt ("qSymbol::");
3591 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3592 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3595 while (strncmp (reply
, "qSymbol:", 8) == 0)
3598 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3600 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3602 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3605 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3606 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3608 /* If this is a function address, return the start of code
3609 instead of any data function descriptor. */
3610 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3614 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3615 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3619 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3624 static struct serial
*
3625 remote_serial_open (char *name
)
3627 static int udp_warning
= 0;
3629 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3630 of in ser-tcp.c, because it is the remote protocol assuming that the
3631 serial connection is reliable and not the serial connection promising
3633 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3635 warning (_("The remote protocol may be unreliable over UDP.\n"
3636 "Some events may be lost, rendering further debugging "
3641 return serial_open (name
);
3644 /* Inform the target of our permission settings. The permission flags
3645 work without this, but if the target knows the settings, it can do
3646 a couple things. First, it can add its own check, to catch cases
3647 that somehow manage to get by the permissions checks in target
3648 methods. Second, if the target is wired to disallow particular
3649 settings (for instance, a system in the field that is not set up to
3650 be able to stop at a breakpoint), it can object to any unavailable
3654 remote_set_permissions (void)
3656 struct remote_state
*rs
= get_remote_state ();
3658 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3659 "WriteReg:%x;WriteMem:%x;"
3660 "InsertBreak:%x;InsertTrace:%x;"
3661 "InsertFastTrace:%x;Stop:%x",
3662 may_write_registers
, may_write_memory
,
3663 may_insert_breakpoints
, may_insert_tracepoints
,
3664 may_insert_fast_tracepoints
, may_stop
);
3666 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3668 /* If the target didn't like the packet, warn the user. Do not try
3669 to undo the user's settings, that would just be maddening. */
3670 if (strcmp (rs
->buf
, "OK") != 0)
3671 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3674 /* This type describes each known response to the qSupported
3676 struct protocol_feature
3678 /* The name of this protocol feature. */
3681 /* The default for this protocol feature. */
3682 enum packet_support default_support
;
3684 /* The function to call when this feature is reported, or after
3685 qSupported processing if the feature is not supported.
3686 The first argument points to this structure. The second
3687 argument indicates whether the packet requested support be
3688 enabled, disabled, or probed (or the default, if this function
3689 is being called at the end of processing and this feature was
3690 not reported). The third argument may be NULL; if not NULL, it
3691 is a NUL-terminated string taken from the packet following
3692 this feature's name and an equals sign. */
3693 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3696 /* The corresponding packet for this feature. Only used if
3697 FUNC is remote_supported_packet. */
3702 remote_supported_packet (const struct protocol_feature
*feature
,
3703 enum packet_support support
,
3704 const char *argument
)
3708 warning (_("Remote qSupported response supplied an unexpected value for"
3709 " \"%s\"."), feature
->name
);
3713 if (remote_protocol_packets
[feature
->packet
].support
3714 == PACKET_SUPPORT_UNKNOWN
)
3715 remote_protocol_packets
[feature
->packet
].support
= support
;
3719 remote_packet_size (const struct protocol_feature
*feature
,
3720 enum packet_support support
, const char *value
)
3722 struct remote_state
*rs
= get_remote_state ();
3727 if (support
!= PACKET_ENABLE
)
3730 if (value
== NULL
|| *value
== '\0')
3732 warning (_("Remote target reported \"%s\" without a size."),
3738 packet_size
= strtol (value
, &value_end
, 16);
3739 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3741 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3742 feature
->name
, value
);
3746 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3748 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3749 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3750 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3753 /* Record the new maximum packet size. */
3754 rs
->explicit_packet_size
= packet_size
;
3758 remote_multi_process_feature (const struct protocol_feature
*feature
,
3759 enum packet_support support
, const char *value
)
3761 struct remote_state
*rs
= get_remote_state ();
3763 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3767 remote_non_stop_feature (const struct protocol_feature
*feature
,
3768 enum packet_support support
, const char *value
)
3770 struct remote_state
*rs
= get_remote_state ();
3772 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3776 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3777 enum packet_support support
,
3780 struct remote_state
*rs
= get_remote_state ();
3782 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3786 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3787 enum packet_support support
,
3790 struct remote_state
*rs
= get_remote_state ();
3792 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3796 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3797 enum packet_support support
,
3800 struct remote_state
*rs
= get_remote_state ();
3802 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3806 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3807 enum packet_support support
,
3810 struct remote_state
*rs
= get_remote_state ();
3812 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3816 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3817 enum packet_support support
,
3820 struct remote_state
*rs
= get_remote_state ();
3822 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3826 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3827 enum packet_support support
,
3830 struct remote_state
*rs
= get_remote_state ();
3832 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3836 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3837 enum packet_support support
,
3840 struct remote_state
*rs
= get_remote_state ();
3842 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3846 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3847 enum packet_support support
,
3850 struct remote_state
*rs
= get_remote_state ();
3852 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3856 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3857 enum packet_support support
,
3860 struct remote_state
*rs
= get_remote_state ();
3862 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3865 static struct protocol_feature remote_protocol_features
[] = {
3866 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3867 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3868 PACKET_qXfer_auxv
},
3869 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3870 PACKET_qXfer_features
},
3871 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3872 PACKET_qXfer_libraries
},
3873 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3874 PACKET_qXfer_libraries_svr4
},
3875 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3876 PACKET_qXfer_memory_map
},
3877 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3878 PACKET_qXfer_spu_read
},
3879 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3880 PACKET_qXfer_spu_write
},
3881 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3882 PACKET_qXfer_osdata
},
3883 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3884 PACKET_qXfer_threads
},
3885 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3886 PACKET_qXfer_traceframe_info
},
3887 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3888 PACKET_QPassSignals
},
3889 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3890 PACKET_QProgramSignals
},
3891 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3892 PACKET_QStartNoAckMode
},
3893 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3894 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3895 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3896 PACKET_qXfer_siginfo_read
},
3897 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3898 PACKET_qXfer_siginfo_write
},
3899 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3900 PACKET_ConditionalTracepoints
},
3901 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3902 PACKET_ConditionalBreakpoints
},
3903 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3904 PACKET_BreakpointCommands
},
3905 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3906 PACKET_FastTracepoints
},
3907 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3908 PACKET_StaticTracepoints
},
3909 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3910 PACKET_InstallInTrace
},
3911 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3913 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3915 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3917 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3918 PACKET_TracepointSource
},
3919 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3921 { "EnableDisableTracepoints", PACKET_DISABLE
,
3922 remote_enable_disable_tracepoint_feature
, -1 },
3923 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3924 PACKET_qXfer_fdpic
},
3925 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3927 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3928 PACKET_QDisableRandomization
},
3929 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3930 { "tracenz", PACKET_DISABLE
,
3931 remote_string_tracing_feature
, -1 },
3934 static char *remote_support_xml
;
3936 /* Register string appended to "xmlRegisters=" in qSupported query. */
3939 register_remote_support_xml (const char *xml
)
3941 #if defined(HAVE_LIBEXPAT)
3942 if (remote_support_xml
== NULL
)
3943 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3946 char *copy
= xstrdup (remote_support_xml
+ 13);
3947 char *p
= strtok (copy
, ",");
3951 if (strcmp (p
, xml
) == 0)
3958 while ((p
= strtok (NULL
, ",")) != NULL
);
3961 remote_support_xml
= reconcat (remote_support_xml
,
3962 remote_support_xml
, ",", xml
,
3969 remote_query_supported_append (char *msg
, const char *append
)
3972 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3974 return xstrdup (append
);
3978 remote_query_supported (void)
3980 struct remote_state
*rs
= get_remote_state ();
3983 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3985 /* The packet support flags are handled differently for this packet
3986 than for most others. We treat an error, a disabled packet, and
3987 an empty response identically: any features which must be reported
3988 to be used will be automatically disabled. An empty buffer
3989 accomplishes this, since that is also the representation for a list
3990 containing no features. */
3993 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3996 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3998 q
= remote_query_supported_append (q
, "multiprocess+");
4000 if (remote_support_xml
)
4001 q
= remote_query_supported_append (q
, remote_support_xml
);
4003 q
= remote_query_supported_append (q
, "qRelocInsn+");
4005 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4008 do_cleanups (old_chain
);
4010 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4012 /* If an error occured, warn, but do not return - just reset the
4013 buffer to empty and go on to disable features. */
4014 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4017 warning (_("Remote failure reply: %s"), rs
->buf
);
4022 memset (seen
, 0, sizeof (seen
));
4027 enum packet_support is_supported
;
4028 char *p
, *end
, *name_end
, *value
;
4030 /* First separate out this item from the rest of the packet. If
4031 there's another item after this, we overwrite the separator
4032 (terminated strings are much easier to work with). */
4034 end
= strchr (p
, ';');
4037 end
= p
+ strlen (p
);
4047 warning (_("empty item in \"qSupported\" response"));
4052 name_end
= strchr (p
, '=');
4055 /* This is a name=value entry. */
4056 is_supported
= PACKET_ENABLE
;
4057 value
= name_end
+ 1;
4066 is_supported
= PACKET_ENABLE
;
4070 is_supported
= PACKET_DISABLE
;
4074 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4078 warning (_("unrecognized item \"%s\" "
4079 "in \"qSupported\" response"), p
);
4085 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4086 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4088 const struct protocol_feature
*feature
;
4091 feature
= &remote_protocol_features
[i
];
4092 feature
->func (feature
, is_supported
, value
);
4097 /* If we increased the packet size, make sure to increase the global
4098 buffer size also. We delay this until after parsing the entire
4099 qSupported packet, because this is the same buffer we were
4101 if (rs
->buf_size
< rs
->explicit_packet_size
)
4103 rs
->buf_size
= rs
->explicit_packet_size
;
4104 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4107 /* Handle the defaults for unmentioned features. */
4108 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4111 const struct protocol_feature
*feature
;
4113 feature
= &remote_protocol_features
[i
];
4114 feature
->func (feature
, feature
->default_support
, NULL
);
4120 remote_open_1 (char *name
, int from_tty
,
4121 struct target_ops
*target
, int extended_p
)
4123 struct remote_state
*rs
= get_remote_state ();
4126 error (_("To open a remote debug connection, you need to specify what\n"
4127 "serial device is attached to the remote system\n"
4128 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4130 /* See FIXME above. */
4131 if (!target_async_permitted
)
4132 wait_forever_enabled_p
= 1;
4134 /* If we're connected to a running target, target_preopen will kill it.
4135 But if we're connected to a target system with no running process,
4136 then we will still be connected when it returns. Ask this question
4137 first, before target_preopen has a chance to kill anything. */
4138 if (remote_desc
!= NULL
&& !have_inferiors ())
4141 || query (_("Already connected to a remote target. Disconnect? ")))
4144 error (_("Still connected."));
4147 target_preopen (from_tty
);
4149 unpush_target (target
);
4151 /* This time without a query. If we were connected to an
4152 extended-remote target and target_preopen killed the running
4153 process, we may still be connected. If we are starting "target
4154 remote" now, the extended-remote target will not have been
4155 removed by unpush_target. */
4156 if (remote_desc
!= NULL
&& !have_inferiors ())
4159 /* Make sure we send the passed signals list the next time we resume. */
4160 xfree (last_pass_packet
);
4161 last_pass_packet
= NULL
;
4163 /* Make sure we send the program signals list the next time we
4165 xfree (last_program_signals_packet
);
4166 last_program_signals_packet
= NULL
;
4168 remote_fileio_reset ();
4169 reopen_exec_file ();
4172 remote_desc
= remote_serial_open (name
);
4174 perror_with_name (name
);
4176 if (baud_rate
!= -1)
4178 if (serial_setbaudrate (remote_desc
, baud_rate
))
4180 /* The requested speed could not be set. Error out to
4181 top level after closing remote_desc. Take care to
4182 set remote_desc to NULL to avoid closing remote_desc
4184 serial_close (remote_desc
);
4186 perror_with_name (name
);
4190 serial_raw (remote_desc
);
4192 /* If there is something sitting in the buffer we might take it as a
4193 response to a command, which would be bad. */
4194 serial_flush_input (remote_desc
);
4198 puts_filtered ("Remote debugging using ");
4199 puts_filtered (name
);
4200 puts_filtered ("\n");
4202 push_target (target
); /* Switch to using remote target now. */
4204 /* Register extra event sources in the event loop. */
4205 remote_async_inferior_event_token
4206 = create_async_event_handler (remote_async_inferior_event_handler
,
4208 remote_notif_register_async_event_handler ();
4210 /* Reset the target state; these things will be queried either by
4211 remote_query_supported or as they are needed. */
4212 init_all_packet_configs ();
4213 rs
->cached_wait_status
= 0;
4214 rs
->explicit_packet_size
= 0;
4216 rs
->multi_process_aware
= 0;
4217 rs
->extended
= extended_p
;
4218 rs
->non_stop_aware
= 0;
4219 rs
->waiting_for_stop_reply
= 0;
4220 rs
->ctrlc_pending_p
= 0;
4222 general_thread
= not_sent_ptid
;
4223 continue_thread
= not_sent_ptid
;
4224 remote_traceframe_number
= -1;
4226 /* Probe for ability to use "ThreadInfo" query, as required. */
4227 use_threadinfo_query
= 1;
4228 use_threadextra_query
= 1;
4230 if (target_async_permitted
)
4232 /* With this target we start out by owning the terminal. */
4233 remote_async_terminal_ours_p
= 1;
4235 /* FIXME: cagney/1999-09-23: During the initial connection it is
4236 assumed that the target is already ready and able to respond to
4237 requests. Unfortunately remote_start_remote() eventually calls
4238 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4239 around this. Eventually a mechanism that allows
4240 wait_for_inferior() to expect/get timeouts will be
4242 wait_forever_enabled_p
= 0;
4245 /* First delete any symbols previously loaded from shared libraries. */
4246 no_shared_libraries (NULL
, 0);
4249 init_thread_list ();
4251 /* Start the remote connection. If error() or QUIT, discard this
4252 target (we'd otherwise be in an inconsistent state) and then
4253 propogate the error on up the exception chain. This ensures that
4254 the caller doesn't stumble along blindly assuming that the
4255 function succeeded. The CLI doesn't have this problem but other
4256 UI's, such as MI do.
4258 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4259 this function should return an error indication letting the
4260 caller restore the previous state. Unfortunately the command
4261 ``target remote'' is directly wired to this function making that
4262 impossible. On a positive note, the CLI side of this problem has
4263 been fixed - the function set_cmd_context() makes it possible for
4264 all the ``target ....'' commands to share a common callback
4265 function. See cli-dump.c. */
4267 volatile struct gdb_exception ex
;
4269 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4271 remote_start_remote (from_tty
, target
, extended_p
);
4275 /* Pop the partially set up target - unless something else did
4276 already before throwing the exception. */
4277 if (remote_desc
!= NULL
)
4279 if (target_async_permitted
)
4280 wait_forever_enabled_p
= 1;
4281 throw_exception (ex
);
4285 if (target_async_permitted
)
4286 wait_forever_enabled_p
= 1;
4289 /* This takes a program previously attached to and detaches it. After
4290 this is done, GDB can be used to debug some other program. We
4291 better not have left any breakpoints in the target program or it'll
4292 die when it hits one. */
4295 remote_detach_1 (char *args
, int from_tty
, int extended
)
4297 int pid
= ptid_get_pid (inferior_ptid
);
4298 struct remote_state
*rs
= get_remote_state ();
4301 error (_("Argument given to \"detach\" when remotely debugging."));
4303 if (!target_has_execution
)
4304 error (_("No process to detach from."));
4308 char *exec_file
= get_exec_file (0);
4309 if (exec_file
== NULL
)
4311 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4312 target_pid_to_str (pid_to_ptid (pid
)));
4313 gdb_flush (gdb_stdout
);
4316 /* Tell the remote target to detach. */
4317 if (remote_multi_process_p (rs
))
4318 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4320 strcpy (rs
->buf
, "D");
4323 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4325 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4327 else if (rs
->buf
[0] == '\0')
4328 error (_("Remote doesn't know how to detach"));
4330 error (_("Can't detach process."));
4332 if (from_tty
&& !extended
)
4333 puts_filtered (_("Ending remote debugging.\n"));
4335 target_mourn_inferior ();
4339 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4341 remote_detach_1 (args
, from_tty
, 0);
4345 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4347 remote_detach_1 (args
, from_tty
, 1);
4350 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4353 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4356 error (_("Argument given to \"disconnect\" when remotely debugging."));
4358 /* Make sure we unpush even the extended remote targets; mourn
4359 won't do it. So call remote_mourn_1 directly instead of
4360 target_mourn_inferior. */
4361 remote_mourn_1 (target
);
4364 puts_filtered ("Ending remote debugging.\n");
4367 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4368 be chatty about it. */
4371 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4373 struct remote_state
*rs
= get_remote_state ();
4375 char *wait_status
= NULL
;
4377 pid
= parse_pid_to_attach (args
);
4379 /* Remote PID can be freely equal to getpid, do not check it here the same
4380 way as in other targets. */
4382 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4383 error (_("This target does not support attaching to a process"));
4387 char *exec_file
= get_exec_file (0);
4390 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4391 target_pid_to_str (pid_to_ptid (pid
)));
4393 printf_unfiltered (_("Attaching to %s\n"),
4394 target_pid_to_str (pid_to_ptid (pid
)));
4396 gdb_flush (gdb_stdout
);
4399 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4401 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4403 if (packet_ok (rs
->buf
,
4404 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4408 /* Save the reply for later. */
4409 wait_status
= alloca (strlen (rs
->buf
) + 1);
4410 strcpy (wait_status
, rs
->buf
);
4412 else if (strcmp (rs
->buf
, "OK") != 0)
4413 error (_("Attaching to %s failed with: %s"),
4414 target_pid_to_str (pid_to_ptid (pid
)),
4417 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4418 error (_("This target does not support attaching to a process"));
4420 error (_("Attaching to %s failed"),
4421 target_pid_to_str (pid_to_ptid (pid
)));
4423 set_current_inferior (remote_add_inferior (0, pid
, 1));
4425 inferior_ptid
= pid_to_ptid (pid
);
4429 struct thread_info
*thread
;
4431 /* Get list of threads. */
4432 remote_threads_info (target
);
4434 thread
= first_thread_of_process (pid
);
4436 inferior_ptid
= thread
->ptid
;
4438 inferior_ptid
= pid_to_ptid (pid
);
4440 /* Invalidate our notion of the remote current thread. */
4441 record_currthread (minus_one_ptid
);
4445 /* Now, if we have thread information, update inferior_ptid. */
4446 inferior_ptid
= remote_current_thread (inferior_ptid
);
4448 /* Add the main thread to the thread list. */
4449 add_thread_silent (inferior_ptid
);
4452 /* Next, if the target can specify a description, read it. We do
4453 this before anything involving memory or registers. */
4454 target_find_description ();
4458 /* Use the previously fetched status. */
4459 gdb_assert (wait_status
!= NULL
);
4461 if (target_can_async_p ())
4463 struct notif_event
*reply
4464 = remote_notif_parse (¬if_client_stop
, wait_status
);
4466 push_stop_reply ((struct stop_reply
*) reply
);
4468 target_async (inferior_event_handler
, 0);
4472 gdb_assert (wait_status
!= NULL
);
4473 strcpy (rs
->buf
, wait_status
);
4474 rs
->cached_wait_status
= 1;
4478 gdb_assert (wait_status
== NULL
);
4482 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4484 extended_remote_attach_1 (ops
, args
, from_tty
);
4487 /* Convert hex digit A to a number. */
4492 if (a
>= '0' && a
<= '9')
4494 else if (a
>= 'a' && a
<= 'f')
4495 return a
- 'a' + 10;
4496 else if (a
>= 'A' && a
<= 'F')
4497 return a
- 'A' + 10;
4499 error (_("Reply contains invalid hex digit %d"), a
);
4503 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4507 for (i
= 0; i
< count
; i
++)
4509 if (hex
[0] == 0 || hex
[1] == 0)
4511 /* Hex string is short, or of uneven length.
4512 Return the count that has been converted so far. */
4515 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4521 /* Convert number NIB to a hex digit. */
4529 return 'a' + nib
- 10;
4533 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4537 /* May use a length, or a nul-terminated string as input. */
4539 count
= strlen ((char *) bin
);
4541 for (i
= 0; i
< count
; i
++)
4543 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4544 *hex
++ = tohex (*bin
++ & 0xf);
4550 /* Check for the availability of vCont. This function should also check
4554 remote_vcont_probe (struct remote_state
*rs
)
4558 strcpy (rs
->buf
, "vCont?");
4560 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4563 /* Make sure that the features we assume are supported. */
4564 if (strncmp (buf
, "vCont", 5) == 0)
4567 int support_s
, support_S
, support_c
, support_C
;
4573 rs
->support_vCont_t
= 0;
4574 while (p
&& *p
== ';')
4577 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4579 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4581 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4583 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4585 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4586 rs
->support_vCont_t
= 1;
4588 p
= strchr (p
, ';');
4591 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4592 BUF will make packet_ok disable the packet. */
4593 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4597 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4600 /* Helper function for building "vCont" resumptions. Write a
4601 resumption to P. ENDP points to one-passed-the-end of the buffer
4602 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4603 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4604 resumed thread should be single-stepped and/or signalled. If PTID
4605 equals minus_one_ptid, then all threads are resumed; if PTID
4606 represents a process, then all threads of the process are resumed;
4607 the thread to be stepped and/or signalled is given in the global
4611 append_resumption (char *p
, char *endp
,
4612 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4614 struct remote_state
*rs
= get_remote_state ();
4616 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4617 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4619 p
+= xsnprintf (p
, endp
- p
, ";s");
4620 else if (siggnal
!= GDB_SIGNAL_0
)
4621 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4623 p
+= xsnprintf (p
, endp
- p
, ";c");
4625 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4629 /* All (-1) threads of process. */
4630 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4632 p
+= xsnprintf (p
, endp
- p
, ":");
4633 p
= write_ptid (p
, endp
, nptid
);
4635 else if (!ptid_equal (ptid
, minus_one_ptid
))
4637 p
+= xsnprintf (p
, endp
- p
, ":");
4638 p
= write_ptid (p
, endp
, ptid
);
4644 /* Append a vCont continue-with-signal action for threads that have a
4645 non-zero stop signal. */
4648 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4650 struct thread_info
*thread
;
4652 ALL_THREADS (thread
)
4653 if (ptid_match (thread
->ptid
, ptid
)
4654 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4655 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4656 && signal_pass_state (thread
->suspend
.stop_signal
))
4658 p
= append_resumption (p
, endp
, thread
->ptid
,
4659 0, thread
->suspend
.stop_signal
);
4660 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4666 /* Resume the remote inferior by using a "vCont" packet. The thread
4667 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4668 resumed thread should be single-stepped and/or signalled. If PTID
4669 equals minus_one_ptid, then all threads are resumed; the thread to
4670 be stepped and/or signalled is given in the global INFERIOR_PTID.
4671 This function returns non-zero iff it resumes the inferior.
4673 This function issues a strict subset of all possible vCont commands at the
4677 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4679 struct remote_state
*rs
= get_remote_state ();
4683 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4684 remote_vcont_probe (rs
);
4686 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4690 endp
= rs
->buf
+ get_remote_packet_size ();
4692 /* If we could generate a wider range of packets, we'd have to worry
4693 about overflowing BUF. Should there be a generic
4694 "multi-part-packet" packet? */
4696 p
+= xsnprintf (p
, endp
- p
, "vCont");
4698 if (ptid_equal (ptid
, magic_null_ptid
))
4700 /* MAGIC_NULL_PTID means that we don't have any active threads,
4701 so we don't have any TID numbers the inferior will
4702 understand. Make sure to only send forms that do not specify
4704 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4706 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4708 /* Resume all threads (of all processes, or of a single
4709 process), with preference for INFERIOR_PTID. This assumes
4710 inferior_ptid belongs to the set of all threads we are about
4712 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4714 /* Step inferior_ptid, with or without signal. */
4715 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4718 /* Also pass down any pending signaled resumption for other
4719 threads not the current. */
4720 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4722 /* And continue others without a signal. */
4723 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4727 /* Scheduler locking; resume only PTID. */
4728 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4731 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4736 /* In non-stop, the stub replies to vCont with "OK". The stop
4737 reply will be reported asynchronously by means of a `%Stop'
4739 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4740 if (strcmp (rs
->buf
, "OK") != 0)
4741 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4747 /* Tell the remote machine to resume. */
4749 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4751 static int last_sent_step
;
4754 remote_resume (struct target_ops
*ops
,
4755 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4757 struct remote_state
*rs
= get_remote_state ();
4760 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4761 (explained in remote-notif.c:handle_notification) so
4762 remote_notif_process is not called. We need find a place where
4763 it is safe to start a 'vNotif' sequence. It is good to do it
4764 before resuming inferior, because inferior was stopped and no RSP
4765 traffic at that moment. */
4767 remote_notif_process (¬if_client_stop
);
4769 last_sent_signal
= siggnal
;
4770 last_sent_step
= step
;
4772 /* The vCont packet doesn't need to specify threads via Hc. */
4773 /* No reverse support (yet) for vCont. */
4774 if (execution_direction
!= EXEC_REVERSE
)
4775 if (remote_vcont_resume (ptid
, step
, siggnal
))
4778 /* All other supported resume packets do use Hc, so set the continue
4780 if (ptid_equal (ptid
, minus_one_ptid
))
4781 set_continue_thread (any_thread_ptid
);
4783 set_continue_thread (ptid
);
4786 if (execution_direction
== EXEC_REVERSE
)
4788 /* We don't pass signals to the target in reverse exec mode. */
4789 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4790 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4794 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4795 error (_("Remote reverse-step not supported."));
4797 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4798 error (_("Remote reverse-continue not supported."));
4800 strcpy (buf
, step
? "bs" : "bc");
4802 else if (siggnal
!= GDB_SIGNAL_0
)
4804 buf
[0] = step
? 'S' : 'C';
4805 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4806 buf
[2] = tohex (((int) siggnal
) & 0xf);
4810 strcpy (buf
, step
? "s" : "c");
4815 /* We are about to start executing the inferior, let's register it
4816 with the event loop. NOTE: this is the one place where all the
4817 execution commands end up. We could alternatively do this in each
4818 of the execution commands in infcmd.c. */
4819 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4820 into infcmd.c in order to allow inferior function calls to work
4821 NOT asynchronously. */
4822 if (target_can_async_p ())
4823 target_async (inferior_event_handler
, 0);
4825 /* We've just told the target to resume. The remote server will
4826 wait for the inferior to stop, and then send a stop reply. In
4827 the mean time, we can't start another command/query ourselves
4828 because the stub wouldn't be ready to process it. This applies
4829 only to the base all-stop protocol, however. In non-stop (which
4830 only supports vCont), the stub replies with an "OK", and is
4831 immediate able to process further serial input. */
4833 rs
->waiting_for_stop_reply
= 1;
4837 /* Set up the signal handler for SIGINT, while the target is
4838 executing, ovewriting the 'regular' SIGINT signal handler. */
4840 initialize_sigint_signal_handler (void)
4842 signal (SIGINT
, handle_remote_sigint
);
4845 /* Signal handler for SIGINT, while the target is executing. */
4847 handle_remote_sigint (int sig
)
4849 signal (sig
, handle_remote_sigint_twice
);
4850 mark_async_signal_handler (sigint_remote_token
);
4853 /* Signal handler for SIGINT, installed after SIGINT has already been
4854 sent once. It will take effect the second time that the user sends
4857 handle_remote_sigint_twice (int sig
)
4859 signal (sig
, handle_remote_sigint
);
4860 mark_async_signal_handler (sigint_remote_twice_token
);
4863 /* Perform the real interruption of the target execution, in response
4866 async_remote_interrupt (gdb_client_data arg
)
4869 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4871 target_stop (inferior_ptid
);
4874 /* Perform interrupt, if the first attempt did not succeed. Just give
4875 up on the target alltogether. */
4877 async_remote_interrupt_twice (gdb_client_data arg
)
4880 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4885 /* Reinstall the usual SIGINT handlers, after the target has
4888 cleanup_sigint_signal_handler (void *dummy
)
4890 signal (SIGINT
, handle_sigint
);
4893 /* Send ^C to target to halt it. Target will respond, and send us a
4895 static void (*ofunc
) (int);
4897 /* The command line interface's stop routine. This function is installed
4898 as a signal handler for SIGINT. The first time a user requests a
4899 stop, we call remote_stop to send a break or ^C. If there is no
4900 response from the target (it didn't stop when the user requested it),
4901 we ask the user if he'd like to detach from the target. */
4903 remote_interrupt (int signo
)
4905 /* If this doesn't work, try more severe steps. */
4906 signal (signo
, remote_interrupt_twice
);
4908 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4911 /* The user typed ^C twice. */
4914 remote_interrupt_twice (int signo
)
4916 signal (signo
, ofunc
);
4917 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4918 signal (signo
, remote_interrupt
);
4921 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4922 thread, all threads of a remote process, or all threads of all
4926 remote_stop_ns (ptid_t ptid
)
4928 struct remote_state
*rs
= get_remote_state ();
4930 char *endp
= rs
->buf
+ get_remote_packet_size ();
4932 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4933 remote_vcont_probe (rs
);
4935 if (!rs
->support_vCont_t
)
4936 error (_("Remote server does not support stopping threads"));
4938 if (ptid_equal (ptid
, minus_one_ptid
)
4939 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4940 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4945 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4947 if (ptid_is_pid (ptid
))
4948 /* All (-1) threads of process. */
4949 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4952 /* Small optimization: if we already have a stop reply for
4953 this thread, no use in telling the stub we want this
4955 if (peek_stop_reply (ptid
))
4961 write_ptid (p
, endp
, nptid
);
4964 /* In non-stop, we get an immediate OK reply. The stop reply will
4965 come in asynchronously by notification. */
4967 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4968 if (strcmp (rs
->buf
, "OK") != 0)
4969 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4972 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4973 remote target. It is undefined which thread of which process
4974 reports the stop. */
4977 remote_stop_as (ptid_t ptid
)
4979 struct remote_state
*rs
= get_remote_state ();
4981 rs
->ctrlc_pending_p
= 1;
4983 /* If the inferior is stopped already, but the core didn't know
4984 about it yet, just ignore the request. The cached wait status
4985 will be collected in remote_wait. */
4986 if (rs
->cached_wait_status
)
4989 /* Send interrupt_sequence to remote target. */
4990 send_interrupt_sequence ();
4993 /* This is the generic stop called via the target vector. When a target
4994 interrupt is requested, either by the command line or the GUI, we
4995 will eventually end up here. */
4998 remote_stop (ptid_t ptid
)
5001 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5004 remote_stop_ns (ptid
);
5006 remote_stop_as (ptid
);
5009 /* Ask the user what to do when an interrupt is received. */
5012 interrupt_query (void)
5014 target_terminal_ours ();
5016 if (target_can_async_p ())
5018 signal (SIGINT
, handle_sigint
);
5019 deprecated_throw_reason (RETURN_QUIT
);
5023 if (query (_("Interrupted while waiting for the program.\n\
5024 Give up (and stop debugging it)? ")))
5027 deprecated_throw_reason (RETURN_QUIT
);
5031 target_terminal_inferior ();
5034 /* Enable/disable target terminal ownership. Most targets can use
5035 terminal groups to control terminal ownership. Remote targets are
5036 different in that explicit transfer of ownership to/from GDB/target
5040 remote_terminal_inferior (void)
5042 if (!target_async_permitted
)
5043 /* Nothing to do. */
5046 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5047 idempotent. The event-loop GDB talking to an asynchronous target
5048 with a synchronous command calls this function from both
5049 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5050 transfer the terminal to the target when it shouldn't this guard
5052 if (!remote_async_terminal_ours_p
)
5054 delete_file_handler (input_fd
);
5055 remote_async_terminal_ours_p
= 0;
5056 initialize_sigint_signal_handler ();
5057 /* NOTE: At this point we could also register our selves as the
5058 recipient of all input. Any characters typed could then be
5059 passed on down to the target. */
5063 remote_terminal_ours (void)
5065 if (!target_async_permitted
)
5066 /* Nothing to do. */
5069 /* See FIXME in remote_terminal_inferior. */
5070 if (remote_async_terminal_ours_p
)
5072 cleanup_sigint_signal_handler (NULL
);
5073 add_file_handler (input_fd
, stdin_event_handler
, 0);
5074 remote_async_terminal_ours_p
= 1;
5078 remote_console_output (char *msg
)
5082 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5085 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5089 fputs_unfiltered (tb
, gdb_stdtarg
);
5091 gdb_flush (gdb_stdtarg
);
5094 typedef struct cached_reg
5097 gdb_byte data
[MAX_REGISTER_SIZE
];
5100 DEF_VEC_O(cached_reg_t
);
5102 typedef struct stop_reply
5104 struct notif_event base
;
5106 /* The identifier of the thread about this event */
5109 struct target_waitstatus ws
;
5111 /* Expedited registers. This makes remote debugging a bit more
5112 efficient for those targets that provide critical registers as
5113 part of their normal status mechanism (as another roundtrip to
5114 fetch them is avoided). */
5115 VEC(cached_reg_t
) *regcache
;
5117 int stopped_by_watchpoint_p
;
5118 CORE_ADDR watch_data_address
;
5126 DECLARE_QUEUE_P (stop_reply_p
);
5127 DEFINE_QUEUE_P (stop_reply_p
);
5128 /* The list of already fetched and acknowledged stop events. This
5129 queue is used for notification Stop, and other notifications
5130 don't need queue for their events, because the notification events
5131 of Stop can't be consumed immediately, so that events should be
5132 queued first, and be consumed by remote_wait_{ns,as} one per
5133 time. Other notifications can consume their events immediately,
5134 so queue is not needed for them. */
5135 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5138 stop_reply_xfree (struct stop_reply
*r
)
5142 VEC_free (cached_reg_t
, r
->regcache
);
5148 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5149 struct notif_event
*event
)
5151 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5155 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5156 struct notif_event
*event
)
5158 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5161 putpkt ((char *) self
->ack_command
);
5163 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5164 /* We got an unknown stop reply. */
5165 error (_("Unknown stop reply"));
5167 push_stop_reply (stop_reply
);
5171 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5173 /* We can't get pending events in remote_notif_process for
5174 notification stop, and we have to do this in remote_wait_ns
5175 instead. If we fetch all queued events from stub, remote stub
5176 may exit and we have no chance to process them back in
5178 mark_async_event_handler (remote_async_inferior_event_token
);
5183 stop_reply_dtr (struct notif_event
*event
)
5185 struct stop_reply
*r
= (struct stop_reply
*) event
;
5187 VEC_free (cached_reg_t
, r
->regcache
);
5190 static struct notif_event
*
5191 remote_notif_stop_alloc_reply (void)
5193 struct notif_event
*r
5194 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5196 r
->dtr
= stop_reply_dtr
;
5201 /* A client of notification Stop. */
5203 struct notif_client notif_client_stop
=
5207 remote_notif_stop_parse
,
5208 remote_notif_stop_ack
,
5209 remote_notif_stop_can_get_pending_events
,
5210 remote_notif_stop_alloc_reply
,
5214 /* A parameter to pass data in and out. */
5216 struct queue_iter_param
5219 struct stop_reply
*output
;
5222 /* Remove all queue elements meet the condition it checks. */
5225 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5226 QUEUE_ITER (stop_reply_p
) *iter
,
5230 struct queue_iter_param
*param
= data
;
5231 struct inferior
*inf
= param
->input
;
5233 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5235 stop_reply_xfree (event
);
5236 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5242 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5243 discard everything. */
5246 discard_pending_stop_replies (struct inferior
*inf
)
5249 struct queue_iter_param param
;
5250 struct stop_reply
*reply
5251 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5253 /* Discard the in-flight notification. */
5256 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5258 stop_reply_xfree (reply
);
5259 notif_client_stop
.pending_event
= NULL
;
5263 param
.output
= NULL
;
5264 /* Discard the stop replies we have already pulled with
5266 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5267 remote_notif_remove_all
, ¶m
);
5270 /* A parameter to pass data in and out. */
5273 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5274 QUEUE_ITER (stop_reply_p
) *iter
,
5278 struct queue_iter_param
*param
= data
;
5279 ptid_t
*ptid
= param
->input
;
5281 if (ptid_match (event
->ptid
, *ptid
))
5283 param
->output
= event
;
5284 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5291 /* Remove the first reply in 'stop_reply_queue' which matches
5294 static struct stop_reply
*
5295 remote_notif_remove_queued_reply (ptid_t ptid
)
5297 struct queue_iter_param param
;
5299 param
.input
= &ptid
;
5300 param
.output
= NULL
;
5302 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5303 remote_notif_remove_once_on_match
, ¶m
);
5305 fprintf_unfiltered (gdb_stdlog
,
5306 "notif: discard queued event: 'Stop' in %s\n",
5307 target_pid_to_str (ptid
));
5309 return param
.output
;
5312 /* Look for a queued stop reply belonging to PTID. If one is found,
5313 remove it from the queue, and return it. Returns NULL if none is
5314 found. If there are still queued events left to process, tell the
5315 event loop to get back to target_wait soon. */
5317 static struct stop_reply
*
5318 queued_stop_reply (ptid_t ptid
)
5320 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5322 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5323 /* There's still at least an event left. */
5324 mark_async_event_handler (remote_async_inferior_event_token
);
5329 /* Push a fully parsed stop reply in the stop reply queue. Since we
5330 know that we now have at least one queued event left to pass to the
5331 core side, tell the event loop to get back to target_wait soon. */
5334 push_stop_reply (struct stop_reply
*new_event
)
5336 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5339 fprintf_unfiltered (gdb_stdlog
,
5340 "notif: push 'Stop' %s to queue %d\n",
5341 target_pid_to_str (new_event
->ptid
),
5342 QUEUE_length (stop_reply_p
,
5345 mark_async_event_handler (remote_async_inferior_event_token
);
5349 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5350 QUEUE_ITER (stop_reply_p
) *iter
,
5351 struct stop_reply
*event
,
5354 ptid_t
*ptid
= data
;
5356 return !(ptid_equal (*ptid
, event
->ptid
)
5357 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5360 /* Returns true if we have a stop reply for PTID. */
5363 peek_stop_reply (ptid_t ptid
)
5365 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5366 stop_reply_match_ptid_and_ws
, &ptid
);
5369 /* Parse the stop reply in BUF. Either the function succeeds, and the
5370 result is stored in EVENT, or throws an error. */
5373 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5375 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5379 event
->ptid
= null_ptid
;
5380 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5381 event
->ws
.value
.integer
= 0;
5382 event
->solibs_changed
= 0;
5383 event
->replay_event
= 0;
5384 event
->stopped_by_watchpoint_p
= 0;
5385 event
->regcache
= NULL
;
5390 case 'T': /* Status with PC, SP, FP, ... */
5391 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5392 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5394 n... = register number
5395 r... = register contents
5398 p
= &buf
[3]; /* after Txx */
5406 /* If the packet contains a register number, save it in
5407 pnum and set p1 to point to the character following it.
5408 Otherwise p1 points to p. */
5410 /* If this packet is an awatch packet, don't parse the 'a'
5411 as a register number. */
5413 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5414 && strncmp (p
, "core", strlen ("core") != 0))
5416 /* Read the ``P'' register number. */
5417 pnum
= strtol (p
, &p_temp
, 16);
5423 if (p1
== p
) /* No register number present here. */
5425 p1
= strchr (p
, ':');
5427 error (_("Malformed packet(a) (missing colon): %s\n\
5430 if (strncmp (p
, "thread", p1
- p
) == 0)
5431 event
->ptid
= read_ptid (++p1
, &p
);
5432 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5433 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5434 || (strncmp (p
, "awatch", p1
- p
) == 0))
5436 event
->stopped_by_watchpoint_p
= 1;
5437 p
= unpack_varlen_hex (++p1
, &addr
);
5438 event
->watch_data_address
= (CORE_ADDR
) addr
;
5440 else if (strncmp (p
, "library", p1
- p
) == 0)
5444 while (*p_temp
&& *p_temp
!= ';')
5447 event
->solibs_changed
= 1;
5450 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5452 /* NO_HISTORY event.
5453 p1 will indicate "begin" or "end", but
5454 it makes no difference for now, so ignore it. */
5455 event
->replay_event
= 1;
5456 p_temp
= strchr (p1
+ 1, ';');
5460 else if (strncmp (p
, "core", p1
- p
) == 0)
5464 p
= unpack_varlen_hex (++p1
, &c
);
5469 /* Silently skip unknown optional info. */
5470 p_temp
= strchr (p1
+ 1, ';');
5477 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5478 cached_reg_t cached_reg
;
5483 error (_("Malformed packet(b) (missing colon): %s\n\
5489 error (_("Remote sent bad register number %s: %s\n\
5491 hex_string (pnum
), p
, buf
);
5493 cached_reg
.num
= reg
->regnum
;
5495 fieldsize
= hex2bin (p
, cached_reg
.data
,
5496 register_size (target_gdbarch (),
5499 if (fieldsize
< register_size (target_gdbarch (),
5501 warning (_("Remote reply is too short: %s"), buf
);
5503 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5507 error (_("Remote register badly formatted: %s\nhere: %s"),
5512 case 'S': /* Old style status, just signal only. */
5513 if (event
->solibs_changed
)
5514 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5515 else if (event
->replay_event
)
5516 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5519 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5520 event
->ws
.value
.sig
= (enum gdb_signal
)
5521 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5524 case 'W': /* Target exited. */
5531 /* GDB used to accept only 2 hex chars here. Stubs should
5532 only send more if they detect GDB supports multi-process
5534 p
= unpack_varlen_hex (&buf
[1], &value
);
5538 /* The remote process exited. */
5539 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5540 event
->ws
.value
.integer
= value
;
5544 /* The remote process exited with a signal. */
5545 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5546 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5549 /* If no process is specified, assume inferior_ptid. */
5550 pid
= ptid_get_pid (inferior_ptid
);
5559 else if (strncmp (p
,
5560 "process:", sizeof ("process:") - 1) == 0)
5564 p
+= sizeof ("process:") - 1;
5565 unpack_varlen_hex (p
, &upid
);
5569 error (_("unknown stop reply packet: %s"), buf
);
5572 error (_("unknown stop reply packet: %s"), buf
);
5573 event
->ptid
= pid_to_ptid (pid
);
5578 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5579 error (_("No process or thread specified in stop reply: %s"), buf
);
5582 /* When the stub wants to tell GDB about a new notification reply, it
5583 sends a notification (%Stop, for example). Those can come it at
5584 any time, hence, we have to make sure that any pending
5585 putpkt/getpkt sequence we're making is finished, before querying
5586 the stub for more events with the corresponding ack command
5587 (vStopped, for example). E.g., if we started a vStopped sequence
5588 immediately upon receiving the notification, something like this
5596 1.6) <-- (registers reply to step #1.3)
5598 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5601 To solve this, whenever we parse a %Stop notification sucessfully,
5602 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5603 doing whatever we were doing:
5609 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5610 2.5) <-- (registers reply to step #2.3)
5612 Eventualy after step #2.5, we return to the event loop, which
5613 notices there's an event on the
5614 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5615 associated callback --- the function below. At this point, we're
5616 always safe to start a vStopped sequence. :
5619 2.7) <-- T05 thread:2
5625 remote_notif_get_pending_events (struct notif_client
*nc
)
5627 struct remote_state
*rs
= get_remote_state ();
5629 if (nc
->pending_event
)
5632 fprintf_unfiltered (gdb_stdlog
,
5633 "notif: process: '%s' ack pending event\n",
5637 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5638 nc
->pending_event
= NULL
;
5642 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5643 if (strcmp (rs
->buf
, "OK") == 0)
5646 remote_notif_ack (nc
, rs
->buf
);
5652 fprintf_unfiltered (gdb_stdlog
,
5653 "notif: process: '%s' no pending reply\n",
5658 /* Called when it is decided that STOP_REPLY holds the info of the
5659 event that is to be returned to the core. This function always
5660 destroys STOP_REPLY. */
5663 process_stop_reply (struct stop_reply
*stop_reply
,
5664 struct target_waitstatus
*status
)
5668 *status
= stop_reply
->ws
;
5669 ptid
= stop_reply
->ptid
;
5671 /* If no thread/process was reported by the stub, assume the current
5673 if (ptid_equal (ptid
, null_ptid
))
5674 ptid
= inferior_ptid
;
5676 if (status
->kind
!= TARGET_WAITKIND_EXITED
5677 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5679 /* Expedited registers. */
5680 if (stop_reply
->regcache
)
5682 struct regcache
*regcache
5683 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5688 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5690 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5691 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5694 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5695 remote_watch_data_address
= stop_reply
->watch_data_address
;
5697 remote_notice_new_inferior (ptid
, 0);
5698 demand_private_info (ptid
)->core
= stop_reply
->core
;
5701 stop_reply_xfree (stop_reply
);
5705 /* The non-stop mode version of target_wait. */
5708 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5710 struct remote_state
*rs
= get_remote_state ();
5711 struct stop_reply
*stop_reply
;
5715 /* If in non-stop mode, get out of getpkt even if a
5716 notification is received. */
5718 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5719 0 /* forever */, &is_notif
);
5722 if (ret
!= -1 && !is_notif
)
5725 case 'E': /* Error of some sort. */
5726 /* We're out of sync with the target now. Did it continue
5727 or not? We can't tell which thread it was in non-stop,
5728 so just ignore this. */
5729 warning (_("Remote failure reply: %s"), rs
->buf
);
5731 case 'O': /* Console output. */
5732 remote_console_output (rs
->buf
+ 1);
5735 warning (_("Invalid remote reply: %s"), rs
->buf
);
5739 /* Acknowledge a pending stop reply that may have arrived in the
5741 if (notif_client_stop
.pending_event
!= NULL
)
5742 remote_notif_get_pending_events (¬if_client_stop
);
5744 /* If indeed we noticed a stop reply, we're done. */
5745 stop_reply
= queued_stop_reply (ptid
);
5746 if (stop_reply
!= NULL
)
5747 return process_stop_reply (stop_reply
, status
);
5749 /* Still no event. If we're just polling for an event, then
5750 return to the event loop. */
5751 if (options
& TARGET_WNOHANG
)
5753 status
->kind
= TARGET_WAITKIND_IGNORE
;
5754 return minus_one_ptid
;
5757 /* Otherwise do a blocking wait. */
5758 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5759 1 /* forever */, &is_notif
);
5763 /* Wait until the remote machine stops, then return, storing status in
5764 STATUS just as `wait' would. */
5767 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5769 struct remote_state
*rs
= get_remote_state ();
5770 ptid_t event_ptid
= null_ptid
;
5772 struct stop_reply
*stop_reply
;
5776 status
->kind
= TARGET_WAITKIND_IGNORE
;
5777 status
->value
.integer
= 0;
5779 stop_reply
= queued_stop_reply (ptid
);
5780 if (stop_reply
!= NULL
)
5781 return process_stop_reply (stop_reply
, status
);
5783 if (rs
->cached_wait_status
)
5784 /* Use the cached wait status, but only once. */
5785 rs
->cached_wait_status
= 0;
5791 if (!target_is_async_p ())
5793 ofunc
= signal (SIGINT
, remote_interrupt
);
5794 /* If the user hit C-c before this packet, or between packets,
5795 pretend that it was hit right here. */
5796 if (check_quit_flag ())
5799 remote_interrupt (SIGINT
);
5803 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5804 _never_ wait for ever -> test on target_is_async_p().
5805 However, before we do that we need to ensure that the caller
5806 knows how to take the target into/out of async mode. */
5807 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5808 wait_forever_enabled_p
, &is_notif
);
5810 /* GDB gets a notification. Return to core as this event is
5812 if (ret
!= -1 && is_notif
)
5813 return minus_one_ptid
;
5815 if (!target_is_async_p ())
5816 signal (SIGINT
, ofunc
);
5821 remote_stopped_by_watchpoint_p
= 0;
5823 /* We got something. */
5824 rs
->waiting_for_stop_reply
= 0;
5826 /* Assume that the target has acknowledged Ctrl-C unless we receive
5827 an 'F' or 'O' packet. */
5828 if (buf
[0] != 'F' && buf
[0] != 'O')
5829 rs
->ctrlc_pending_p
= 0;
5833 case 'E': /* Error of some sort. */
5834 /* We're out of sync with the target now. Did it continue or
5835 not? Not is more likely, so report a stop. */
5836 warning (_("Remote failure reply: %s"), buf
);
5837 status
->kind
= TARGET_WAITKIND_STOPPED
;
5838 status
->value
.sig
= GDB_SIGNAL_0
;
5840 case 'F': /* File-I/O request. */
5841 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5842 rs
->ctrlc_pending_p
= 0;
5844 case 'T': case 'S': case 'X': case 'W':
5846 struct stop_reply
*stop_reply
5847 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5850 event_ptid
= process_stop_reply (stop_reply
, status
);
5853 case 'O': /* Console output. */
5854 remote_console_output (buf
+ 1);
5856 /* The target didn't really stop; keep waiting. */
5857 rs
->waiting_for_stop_reply
= 1;
5861 if (last_sent_signal
!= GDB_SIGNAL_0
)
5863 /* Zero length reply means that we tried 'S' or 'C' and the
5864 remote system doesn't support it. */
5865 target_terminal_ours_for_output ();
5867 ("Can't send signals to this remote system. %s not sent.\n",
5868 gdb_signal_to_name (last_sent_signal
));
5869 last_sent_signal
= GDB_SIGNAL_0
;
5870 target_terminal_inferior ();
5872 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5873 putpkt ((char *) buf
);
5875 /* We just told the target to resume, so a stop reply is in
5877 rs
->waiting_for_stop_reply
= 1;
5880 /* else fallthrough */
5882 warning (_("Invalid remote reply: %s"), buf
);
5884 rs
->waiting_for_stop_reply
= 1;
5888 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5890 /* Nothing interesting happened. If we're doing a non-blocking
5891 poll, we're done. Otherwise, go back to waiting. */
5892 if (options
& TARGET_WNOHANG
)
5893 return minus_one_ptid
;
5897 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5898 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5900 if (!ptid_equal (event_ptid
, null_ptid
))
5901 record_currthread (event_ptid
);
5903 event_ptid
= inferior_ptid
;
5906 /* A process exit. Invalidate our notion of current thread. */
5907 record_currthread (minus_one_ptid
);
5912 /* Wait until the remote machine stops, then return, storing status in
5913 STATUS just as `wait' would. */
5916 remote_wait (struct target_ops
*ops
,
5917 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5922 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5924 event_ptid
= remote_wait_as (ptid
, status
, options
);
5926 if (target_can_async_p ())
5928 /* If there are are events left in the queue tell the event loop
5930 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5931 mark_async_event_handler (remote_async_inferior_event_token
);
5937 /* Fetch a single register using a 'p' packet. */
5940 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5942 struct remote_state
*rs
= get_remote_state ();
5944 char regp
[MAX_REGISTER_SIZE
];
5947 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5950 if (reg
->pnum
== -1)
5955 p
+= hexnumstr (p
, reg
->pnum
);
5958 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5962 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5966 case PACKET_UNKNOWN
:
5969 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5970 gdbarch_register_name (get_regcache_arch (regcache
),
5975 /* If this register is unfetchable, tell the regcache. */
5978 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5982 /* Otherwise, parse and supply the value. */
5988 error (_("fetch_register_using_p: early buf termination"));
5990 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5993 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5997 /* Fetch the registers included in the target's 'g' packet. */
6000 send_g_packet (void)
6002 struct remote_state
*rs
= get_remote_state ();
6005 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6006 remote_send (&rs
->buf
, &rs
->buf_size
);
6008 /* We can get out of synch in various cases. If the first character
6009 in the buffer is not a hex character, assume that has happened
6010 and try to fetch another packet to read. */
6011 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6012 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6013 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6014 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6017 fprintf_unfiltered (gdb_stdlog
,
6018 "Bad register packet; fetching a new packet\n");
6019 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6022 buf_len
= strlen (rs
->buf
);
6024 /* Sanity check the received packet. */
6025 if (buf_len
% 2 != 0)
6026 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6032 process_g_packet (struct regcache
*regcache
)
6034 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6035 struct remote_state
*rs
= get_remote_state ();
6036 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6041 buf_len
= strlen (rs
->buf
);
6043 /* Further sanity checks, with knowledge of the architecture. */
6044 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6045 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6047 /* Save the size of the packet sent to us by the target. It is used
6048 as a heuristic when determining the max size of packets that the
6049 target can safely receive. */
6050 if (rsa
->actual_register_packet_size
== 0)
6051 rsa
->actual_register_packet_size
= buf_len
;
6053 /* If this is smaller than we guessed the 'g' packet would be,
6054 update our records. A 'g' reply that doesn't include a register's
6055 value implies either that the register is not available, or that
6056 the 'p' packet must be used. */
6057 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6059 rsa
->sizeof_g_packet
= buf_len
/ 2;
6061 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6063 if (rsa
->regs
[i
].pnum
== -1)
6066 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6067 rsa
->regs
[i
].in_g_packet
= 0;
6069 rsa
->regs
[i
].in_g_packet
= 1;
6073 regs
= alloca (rsa
->sizeof_g_packet
);
6075 /* Unimplemented registers read as all bits zero. */
6076 memset (regs
, 0, rsa
->sizeof_g_packet
);
6078 /* Reply describes registers byte by byte, each byte encoded as two
6079 hex characters. Suck them all up, then supply them to the
6080 register cacheing/storage mechanism. */
6083 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6085 if (p
[0] == 0 || p
[1] == 0)
6086 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6087 internal_error (__FILE__
, __LINE__
,
6088 _("unexpected end of 'g' packet reply"));
6090 if (p
[0] == 'x' && p
[1] == 'x')
6091 regs
[i
] = 0; /* 'x' */
6093 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6097 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6099 struct packet_reg
*r
= &rsa
->regs
[i
];
6103 if (r
->offset
* 2 >= strlen (rs
->buf
))
6104 /* This shouldn't happen - we adjusted in_g_packet above. */
6105 internal_error (__FILE__
, __LINE__
,
6106 _("unexpected end of 'g' packet reply"));
6107 else if (rs
->buf
[r
->offset
* 2] == 'x')
6109 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6110 /* The register isn't available, mark it as such (at
6111 the same time setting the value to zero). */
6112 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6115 regcache_raw_supply (regcache
, r
->regnum
,
6122 fetch_registers_using_g (struct regcache
*regcache
)
6125 process_g_packet (regcache
);
6128 /* Make the remote selected traceframe match GDB's selected
6132 set_remote_traceframe (void)
6136 if (remote_traceframe_number
== get_traceframe_number ())
6139 /* Avoid recursion, remote_trace_find calls us again. */
6140 remote_traceframe_number
= get_traceframe_number ();
6142 newnum
= target_trace_find (tfind_number
,
6143 get_traceframe_number (), 0, 0, NULL
);
6145 /* Should not happen. If it does, all bets are off. */
6146 if (newnum
!= get_traceframe_number ())
6147 warning (_("could not set remote traceframe"));
6151 remote_fetch_registers (struct target_ops
*ops
,
6152 struct regcache
*regcache
, int regnum
)
6154 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6157 set_remote_traceframe ();
6158 set_general_thread (inferior_ptid
);
6162 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6164 gdb_assert (reg
!= NULL
);
6166 /* If this register might be in the 'g' packet, try that first -
6167 we are likely to read more than one register. If this is the
6168 first 'g' packet, we might be overly optimistic about its
6169 contents, so fall back to 'p'. */
6170 if (reg
->in_g_packet
)
6172 fetch_registers_using_g (regcache
);
6173 if (reg
->in_g_packet
)
6177 if (fetch_register_using_p (regcache
, reg
))
6180 /* This register is not available. */
6181 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6186 fetch_registers_using_g (regcache
);
6188 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6189 if (!rsa
->regs
[i
].in_g_packet
)
6190 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6192 /* This register is not available. */
6193 regcache_raw_supply (regcache
, i
, NULL
);
6197 /* Prepare to store registers. Since we may send them all (using a
6198 'G' request), we have to read out the ones we don't want to change
6202 remote_prepare_to_store (struct regcache
*regcache
)
6204 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6206 gdb_byte buf
[MAX_REGISTER_SIZE
];
6208 /* Make sure the entire registers array is valid. */
6209 switch (remote_protocol_packets
[PACKET_P
].support
)
6211 case PACKET_DISABLE
:
6212 case PACKET_SUPPORT_UNKNOWN
:
6213 /* Make sure all the necessary registers are cached. */
6214 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6215 if (rsa
->regs
[i
].in_g_packet
)
6216 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6223 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6224 packet was not recognized. */
6227 store_register_using_P (const struct regcache
*regcache
,
6228 struct packet_reg
*reg
)
6230 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6231 struct remote_state
*rs
= get_remote_state ();
6232 /* Try storing a single register. */
6233 char *buf
= rs
->buf
;
6234 gdb_byte regp
[MAX_REGISTER_SIZE
];
6237 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6240 if (reg
->pnum
== -1)
6243 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6244 p
= buf
+ strlen (buf
);
6245 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6246 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6248 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6250 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6255 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6256 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6257 case PACKET_UNKNOWN
:
6260 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6264 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6265 contents of the register cache buffer. FIXME: ignores errors. */
6268 store_registers_using_G (const struct regcache
*regcache
)
6270 struct remote_state
*rs
= get_remote_state ();
6271 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6275 /* Extract all the registers in the regcache copying them into a
6280 regs
= alloca (rsa
->sizeof_g_packet
);
6281 memset (regs
, 0, rsa
->sizeof_g_packet
);
6282 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6284 struct packet_reg
*r
= &rsa
->regs
[i
];
6287 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6291 /* Command describes registers byte by byte,
6292 each byte encoded as two hex characters. */
6295 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6297 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6299 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6300 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6301 error (_("Could not write registers; remote failure reply '%s'"),
6305 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6306 of the register cache buffer. FIXME: ignores errors. */
6309 remote_store_registers (struct target_ops
*ops
,
6310 struct regcache
*regcache
, int regnum
)
6312 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6315 set_remote_traceframe ();
6316 set_general_thread (inferior_ptid
);
6320 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6322 gdb_assert (reg
!= NULL
);
6324 /* Always prefer to store registers using the 'P' packet if
6325 possible; we often change only a small number of registers.
6326 Sometimes we change a larger number; we'd need help from a
6327 higher layer to know to use 'G'. */
6328 if (store_register_using_P (regcache
, reg
))
6331 /* For now, don't complain if we have no way to write the
6332 register. GDB loses track of unavailable registers too
6333 easily. Some day, this may be an error. We don't have
6334 any way to read the register, either... */
6335 if (!reg
->in_g_packet
)
6338 store_registers_using_G (regcache
);
6342 store_registers_using_G (regcache
);
6344 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6345 if (!rsa
->regs
[i
].in_g_packet
)
6346 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6347 /* See above for why we do not issue an error here. */
6352 /* Return the number of hex digits in num. */
6355 hexnumlen (ULONGEST num
)
6359 for (i
= 0; num
!= 0; i
++)
6365 /* Set BUF to the minimum number of hex digits representing NUM. */
6368 hexnumstr (char *buf
, ULONGEST num
)
6370 int len
= hexnumlen (num
);
6372 return hexnumnstr (buf
, num
, len
);
6376 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6379 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6385 for (i
= width
- 1; i
>= 0; i
--)
6387 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6394 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6397 remote_address_masked (CORE_ADDR addr
)
6399 unsigned int address_size
= remote_address_size
;
6401 /* If "remoteaddresssize" was not set, default to target address size. */
6403 address_size
= gdbarch_addr_bit (target_gdbarch ());
6405 if (address_size
> 0
6406 && address_size
< (sizeof (ULONGEST
) * 8))
6408 /* Only create a mask when that mask can safely be constructed
6409 in a ULONGEST variable. */
6412 mask
= (mask
<< address_size
) - 1;
6418 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6419 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6420 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6421 (which may be more than *OUT_LEN due to escape characters). The
6422 total number of bytes in the output buffer will be at most
6426 remote_escape_output (const gdb_byte
*buffer
, int len
,
6427 gdb_byte
*out_buf
, int *out_len
,
6430 int input_index
, output_index
;
6433 for (input_index
= 0; input_index
< len
; input_index
++)
6435 gdb_byte b
= buffer
[input_index
];
6437 if (b
== '$' || b
== '#' || b
== '}')
6439 /* These must be escaped. */
6440 if (output_index
+ 2 > out_maxlen
)
6442 out_buf
[output_index
++] = '}';
6443 out_buf
[output_index
++] = b
^ 0x20;
6447 if (output_index
+ 1 > out_maxlen
)
6449 out_buf
[output_index
++] = b
;
6453 *out_len
= input_index
;
6454 return output_index
;
6457 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6458 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6459 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6461 This function reverses remote_escape_output. It allows more
6462 escaped characters than that function does, in particular because
6463 '*' must be escaped to avoid the run-length encoding processing
6464 in reading packets. */
6467 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6468 gdb_byte
*out_buf
, int out_maxlen
)
6470 int input_index
, output_index
;
6475 for (input_index
= 0; input_index
< len
; input_index
++)
6477 gdb_byte b
= buffer
[input_index
];
6479 if (output_index
+ 1 > out_maxlen
)
6481 warning (_("Received too much data from remote target;"
6482 " ignoring overflow."));
6483 return output_index
;
6488 out_buf
[output_index
++] = b
^ 0x20;
6494 out_buf
[output_index
++] = b
;
6498 error (_("Unmatched escape character in target response."));
6500 return output_index
;
6503 /* Determine whether the remote target supports binary downloading.
6504 This is accomplished by sending a no-op memory write of zero length
6505 to the target at the specified address. It does not suffice to send
6506 the whole packet, since many stubs strip the eighth bit and
6507 subsequently compute a wrong checksum, which causes real havoc with
6510 NOTE: This can still lose if the serial line is not eight-bit
6511 clean. In cases like this, the user should clear "remote
6515 check_binary_download (CORE_ADDR addr
)
6517 struct remote_state
*rs
= get_remote_state ();
6519 switch (remote_protocol_packets
[PACKET_X
].support
)
6521 case PACKET_DISABLE
:
6525 case PACKET_SUPPORT_UNKNOWN
:
6531 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6533 p
+= hexnumstr (p
, (ULONGEST
) 0);
6537 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6538 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6540 if (rs
->buf
[0] == '\0')
6543 fprintf_unfiltered (gdb_stdlog
,
6544 "binary downloading NOT "
6545 "supported by target\n");
6546 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6551 fprintf_unfiltered (gdb_stdlog
,
6552 "binary downloading supported by target\n");
6553 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6560 /* Write memory data directly to the remote machine.
6561 This does not inform the data cache; the data cache uses this.
6562 HEADER is the starting part of the packet.
6563 MEMADDR is the address in the remote memory space.
6564 MYADDR is the address of the buffer in our space.
6565 LEN is the number of bytes.
6566 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6567 should send data as binary ('X'), or hex-encoded ('M').
6569 The function creates packet of the form
6570 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6572 where encoding of <DATA> is termined by PACKET_FORMAT.
6574 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6577 Returns the number of bytes transferred, or 0 (setting errno) for
6578 error. Only transfer a single packet. */
6581 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6582 const gdb_byte
*myaddr
, ssize_t len
,
6583 char packet_format
, int use_length
)
6585 struct remote_state
*rs
= get_remote_state ();
6595 if (packet_format
!= 'X' && packet_format
!= 'M')
6596 internal_error (__FILE__
, __LINE__
,
6597 _("remote_write_bytes_aux: bad packet format"));
6602 payload_size
= get_memory_write_packet_size ();
6604 /* The packet buffer will be large enough for the payload;
6605 get_memory_packet_size ensures this. */
6608 /* Compute the size of the actual payload by subtracting out the
6609 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6611 payload_size
-= strlen ("$,:#NN");
6613 /* The comma won't be used. */
6615 header_length
= strlen (header
);
6616 payload_size
-= header_length
;
6617 payload_size
-= hexnumlen (memaddr
);
6619 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6621 strcat (rs
->buf
, header
);
6622 p
= rs
->buf
+ strlen (header
);
6624 /* Compute a best guess of the number of bytes actually transfered. */
6625 if (packet_format
== 'X')
6627 /* Best guess at number of bytes that will fit. */
6628 todo
= min (len
, payload_size
);
6630 payload_size
-= hexnumlen (todo
);
6631 todo
= min (todo
, payload_size
);
6635 /* Num bytes that will fit. */
6636 todo
= min (len
, payload_size
/ 2);
6638 payload_size
-= hexnumlen (todo
);
6639 todo
= min (todo
, payload_size
/ 2);
6643 internal_error (__FILE__
, __LINE__
,
6644 _("minimum packet size too small to write data"));
6646 /* If we already need another packet, then try to align the end
6647 of this packet to a useful boundary. */
6648 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6649 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6651 /* Append "<memaddr>". */
6652 memaddr
= remote_address_masked (memaddr
);
6653 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6660 /* Append <len>. Retain the location/size of <len>. It may need to
6661 be adjusted once the packet body has been created. */
6663 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6671 /* Append the packet body. */
6672 if (packet_format
== 'X')
6674 /* Binary mode. Send target system values byte by byte, in
6675 increasing byte addresses. Only escape certain critical
6677 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6680 /* If not all TODO bytes fit, then we'll need another packet. Make
6681 a second try to keep the end of the packet aligned. Don't do
6682 this if the packet is tiny. */
6683 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6687 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6689 if (new_nr_bytes
!= nr_bytes
)
6690 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6695 p
+= payload_length
;
6696 if (use_length
&& nr_bytes
< todo
)
6698 /* Escape chars have filled up the buffer prematurely,
6699 and we have actually sent fewer bytes than planned.
6700 Fix-up the length field of the packet. Use the same
6701 number of characters as before. */
6702 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6703 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6708 /* Normal mode: Send target system values byte by byte, in
6709 increasing byte addresses. Each byte is encoded as a two hex
6711 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6715 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6716 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6718 if (rs
->buf
[0] == 'E')
6720 /* There is no correspondance between what the remote protocol
6721 uses for errors and errno codes. We would like a cleaner way
6722 of representing errors (big enough to include errno codes,
6723 bfd_error codes, and others). But for now just return EIO. */
6728 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6729 fewer bytes than we'd planned. */
6733 /* Write memory data directly to the remote machine.
6734 This does not inform the data cache; the data cache uses this.
6735 MEMADDR is the address in the remote memory space.
6736 MYADDR is the address of the buffer in our space.
6737 LEN is the number of bytes.
6739 Returns number of bytes transferred, or 0 (setting errno) for
6740 error. Only transfer a single packet. */
6743 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6745 char *packet_format
= 0;
6747 /* Check whether the target supports binary download. */
6748 check_binary_download (memaddr
);
6750 switch (remote_protocol_packets
[PACKET_X
].support
)
6753 packet_format
= "X";
6755 case PACKET_DISABLE
:
6756 packet_format
= "M";
6758 case PACKET_SUPPORT_UNKNOWN
:
6759 internal_error (__FILE__
, __LINE__
,
6760 _("remote_write_bytes: bad internal state"));
6762 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6765 return remote_write_bytes_aux (packet_format
,
6766 memaddr
, myaddr
, len
, packet_format
[0], 1);
6769 /* Read memory data directly from the remote machine.
6770 This does not use the data cache; the data cache uses this.
6771 MEMADDR is the address in the remote memory space.
6772 MYADDR is the address of the buffer in our space.
6773 LEN is the number of bytes.
6775 Returns number of bytes transferred, or 0 for error. */
6778 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6780 struct remote_state
*rs
= get_remote_state ();
6781 int max_buf_size
; /* Max size of packet output buffer. */
6789 max_buf_size
= get_memory_read_packet_size ();
6790 /* The packet buffer will be large enough for the payload;
6791 get_memory_packet_size ensures this. */
6793 /* Number if bytes that will fit. */
6794 todo
= min (len
, max_buf_size
/ 2);
6796 /* Construct "m"<memaddr>","<len>". */
6797 memaddr
= remote_address_masked (memaddr
);
6800 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6802 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6805 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6806 if (rs
->buf
[0] == 'E'
6807 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6808 && rs
->buf
[3] == '\0')
6810 /* There is no correspondance between what the remote protocol
6811 uses for errors and errno codes. We would like a cleaner way
6812 of representing errors (big enough to include errno codes,
6813 bfd_error codes, and others). But for now just return
6818 /* Reply describes memory byte by byte, each byte encoded as two hex
6821 i
= hex2bin (p
, myaddr
, todo
);
6822 /* Return what we have. Let higher layers handle partial reads. */
6827 /* Read or write LEN bytes from inferior memory at MEMADDR,
6828 transferring to or from debugger address BUFFER. Write to inferior
6829 if SHOULD_WRITE is nonzero. Returns length of data written or
6830 read; 0 for error. TARGET is unused. */
6833 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6834 int should_write
, struct mem_attrib
*attrib
,
6835 struct target_ops
*target
)
6839 set_remote_traceframe ();
6840 set_general_thread (inferior_ptid
);
6843 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6845 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6850 /* Sends a packet with content determined by the printf format string
6851 FORMAT and the remaining arguments, then gets the reply. Returns
6852 whether the packet was a success, a failure, or unknown. */
6854 static enum packet_result
6855 remote_send_printf (const char *format
, ...)
6857 struct remote_state
*rs
= get_remote_state ();
6858 int max_size
= get_remote_packet_size ();
6861 va_start (ap
, format
);
6864 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6865 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6867 if (putpkt (rs
->buf
) < 0)
6868 error (_("Communication problem with target."));
6871 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6873 return packet_check_result (rs
->buf
);
6877 restore_remote_timeout (void *p
)
6879 int value
= *(int *)p
;
6881 remote_timeout
= value
;
6884 /* Flash writing can take quite some time. We'll set
6885 effectively infinite timeout for flash operations.
6886 In future, we'll need to decide on a better approach. */
6887 static const int remote_flash_timeout
= 1000;
6890 remote_flash_erase (struct target_ops
*ops
,
6891 ULONGEST address
, LONGEST length
)
6893 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6894 int saved_remote_timeout
= remote_timeout
;
6895 enum packet_result ret
;
6896 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6897 &saved_remote_timeout
);
6899 remote_timeout
= remote_flash_timeout
;
6901 ret
= remote_send_printf ("vFlashErase:%s,%s",
6902 phex (address
, addr_size
),
6906 case PACKET_UNKNOWN
:
6907 error (_("Remote target does not support flash erase"));
6909 error (_("Error erasing flash with vFlashErase packet"));
6914 do_cleanups (back_to
);
6918 remote_flash_write (struct target_ops
*ops
,
6919 ULONGEST address
, LONGEST length
,
6920 const gdb_byte
*data
)
6922 int saved_remote_timeout
= remote_timeout
;
6924 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6925 &saved_remote_timeout
);
6927 remote_timeout
= remote_flash_timeout
;
6928 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6929 do_cleanups (back_to
);
6935 remote_flash_done (struct target_ops
*ops
)
6937 int saved_remote_timeout
= remote_timeout
;
6939 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6940 &saved_remote_timeout
);
6942 remote_timeout
= remote_flash_timeout
;
6943 ret
= remote_send_printf ("vFlashDone");
6944 do_cleanups (back_to
);
6948 case PACKET_UNKNOWN
:
6949 error (_("Remote target does not support vFlashDone"));
6951 error (_("Error finishing flash operation"));
6958 remote_files_info (struct target_ops
*ignore
)
6960 puts_filtered ("Debugging a target over a serial line.\n");
6963 /* Stuff for dealing with the packets which are part of this protocol.
6964 See comment at top of file for details. */
6966 /* Read a single character from the remote end. */
6969 readchar (int timeout
)
6973 ch
= serial_readchar (remote_desc
, timeout
);
6978 switch ((enum serial_rc
) ch
)
6982 error (_("Remote connection closed"));
6986 perror_with_name (_("Remote communication error. "
6987 "Target disconnected."));
6989 case SERIAL_TIMEOUT
:
6995 /* Send the command in *BUF to the remote machine, and read the reply
6996 into *BUF. Report an error if we get an error reply. Resize
6997 *BUF using xrealloc if necessary to hold the result, and update
7001 remote_send (char **buf
,
7005 getpkt (buf
, sizeof_buf
, 0);
7007 if ((*buf
)[0] == 'E')
7008 error (_("Remote failure reply: %s"), *buf
);
7011 /* Return a pointer to an xmalloc'ed string representing an escaped
7012 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7013 etc. The caller is responsible for releasing the returned
7017 escape_buffer (const char *buf
, int n
)
7019 struct cleanup
*old_chain
;
7020 struct ui_file
*stb
;
7023 stb
= mem_fileopen ();
7024 old_chain
= make_cleanup_ui_file_delete (stb
);
7026 fputstrn_unfiltered (buf
, n
, 0, stb
);
7027 str
= ui_file_xstrdup (stb
, NULL
);
7028 do_cleanups (old_chain
);
7032 /* Display a null-terminated packet on stdout, for debugging, using C
7036 print_packet (char *buf
)
7038 puts_filtered ("\"");
7039 fputstr_filtered (buf
, '"', gdb_stdout
);
7040 puts_filtered ("\"");
7046 return putpkt_binary (buf
, strlen (buf
));
7049 /* Send a packet to the remote machine, with error checking. The data
7050 of the packet is in BUF. The string in BUF can be at most
7051 get_remote_packet_size () - 5 to account for the $, # and checksum,
7052 and for a possible /0 if we are debugging (remote_debug) and want
7053 to print the sent packet as a string. */
7056 putpkt_binary (char *buf
, int cnt
)
7058 struct remote_state
*rs
= get_remote_state ();
7060 unsigned char csum
= 0;
7061 char *buf2
= alloca (cnt
+ 6);
7068 /* Catch cases like trying to read memory or listing threads while
7069 we're waiting for a stop reply. The remote server wouldn't be
7070 ready to handle this request, so we'd hang and timeout. We don't
7071 have to worry about this in synchronous mode, because in that
7072 case it's not possible to issue a command while the target is
7073 running. This is not a problem in non-stop mode, because in that
7074 case, the stub is always ready to process serial input. */
7075 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7076 error (_("Cannot execute this command while the target is running."));
7078 /* We're sending out a new packet. Make sure we don't look at a
7079 stale cached response. */
7080 rs
->cached_wait_status
= 0;
7082 /* Copy the packet into buffer BUF2, encapsulating it
7083 and giving it a checksum. */
7088 for (i
= 0; i
< cnt
; i
++)
7094 *p
++ = tohex ((csum
>> 4) & 0xf);
7095 *p
++ = tohex (csum
& 0xf);
7097 /* Send it over and over until we get a positive ack. */
7101 int started_error_output
= 0;
7105 struct cleanup
*old_chain
;
7109 str
= escape_buffer (buf2
, p
- buf2
);
7110 old_chain
= make_cleanup (xfree
, str
);
7111 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7112 gdb_flush (gdb_stdlog
);
7113 do_cleanups (old_chain
);
7115 if (serial_write (remote_desc
, buf2
, p
- buf2
))
7116 perror_with_name (_("putpkt: write failed"));
7118 /* If this is a no acks version of the remote protocol, send the
7119 packet and move on. */
7123 /* Read until either a timeout occurs (-2) or '+' is read.
7124 Handle any notification that arrives in the mean time. */
7127 ch
= readchar (remote_timeout
);
7135 case SERIAL_TIMEOUT
:
7138 if (started_error_output
)
7140 putchar_unfiltered ('\n');
7141 started_error_output
= 0;
7150 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7154 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7156 case SERIAL_TIMEOUT
:
7160 break; /* Retransmit buffer. */
7164 fprintf_unfiltered (gdb_stdlog
,
7165 "Packet instead of Ack, ignoring it\n");
7166 /* It's probably an old response sent because an ACK
7167 was lost. Gobble up the packet and ack it so it
7168 doesn't get retransmitted when we resend this
7171 serial_write (remote_desc
, "+", 1);
7172 continue; /* Now, go look for +. */
7179 /* If we got a notification, handle it, and go back to looking
7181 /* We've found the start of a notification. Now
7182 collect the data. */
7183 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7188 struct cleanup
*old_chain
;
7191 str
= escape_buffer (rs
->buf
, val
);
7192 old_chain
= make_cleanup (xfree
, str
);
7193 fprintf_unfiltered (gdb_stdlog
,
7194 " Notification received: %s\n",
7196 do_cleanups (old_chain
);
7198 handle_notification (rs
->buf
);
7199 /* We're in sync now, rewait for the ack. */
7206 if (!started_error_output
)
7208 started_error_output
= 1;
7209 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7211 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7212 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7221 if (!started_error_output
)
7223 started_error_output
= 1;
7224 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7226 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7230 break; /* Here to retransmit. */
7234 /* This is wrong. If doing a long backtrace, the user should be
7235 able to get out next time we call QUIT, without anything as
7236 violent as interrupt_query. If we want to provide a way out of
7237 here without getting to the next QUIT, it should be based on
7238 hitting ^C twice as in remote_wait. */
7249 /* Come here after finding the start of a frame when we expected an
7250 ack. Do our best to discard the rest of this packet. */
7259 c
= readchar (remote_timeout
);
7262 case SERIAL_TIMEOUT
:
7263 /* Nothing we can do. */
7266 /* Discard the two bytes of checksum and stop. */
7267 c
= readchar (remote_timeout
);
7269 c
= readchar (remote_timeout
);
7272 case '*': /* Run length encoding. */
7273 /* Discard the repeat count. */
7274 c
= readchar (remote_timeout
);
7279 /* A regular character. */
7285 /* Come here after finding the start of the frame. Collect the rest
7286 into *BUF, verifying the checksum, length, and handling run-length
7287 compression. NUL terminate the buffer. If there is not enough room,
7288 expand *BUF using xrealloc.
7290 Returns -1 on error, number of characters in buffer (ignoring the
7291 trailing NULL) on success. (could be extended to return one of the
7292 SERIAL status indications). */
7295 read_frame (char **buf_p
,
7302 struct remote_state
*rs
= get_remote_state ();
7309 c
= readchar (remote_timeout
);
7312 case SERIAL_TIMEOUT
:
7314 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7318 fputs_filtered ("Saw new packet start in middle of old one\n",
7320 return -1; /* Start a new packet, count retries. */
7323 unsigned char pktcsum
;
7329 check_0
= readchar (remote_timeout
);
7331 check_1
= readchar (remote_timeout
);
7333 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7336 fputs_filtered ("Timeout in checksum, retrying\n",
7340 else if (check_0
< 0 || check_1
< 0)
7343 fputs_filtered ("Communication error in checksum\n",
7348 /* Don't recompute the checksum; with no ack packets we
7349 don't have any way to indicate a packet retransmission
7354 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7355 if (csum
== pktcsum
)
7360 struct cleanup
*old_chain
;
7363 str
= escape_buffer (buf
, bc
);
7364 old_chain
= make_cleanup (xfree
, str
);
7365 fprintf_unfiltered (gdb_stdlog
,
7366 "Bad checksum, sentsum=0x%x, "
7367 "csum=0x%x, buf=%s\n",
7368 pktcsum
, csum
, str
);
7369 do_cleanups (old_chain
);
7371 /* Number of characters in buffer ignoring trailing
7375 case '*': /* Run length encoding. */
7380 c
= readchar (remote_timeout
);
7382 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7384 /* The character before ``*'' is repeated. */
7386 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7388 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7390 /* Make some more room in the buffer. */
7391 *sizeof_buf
+= repeat
;
7392 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7396 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7402 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7406 if (bc
>= *sizeof_buf
- 1)
7408 /* Make some more room in the buffer. */
7410 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7421 /* Read a packet from the remote machine, with error checking, and
7422 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7423 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7424 rather than timing out; this is used (in synchronous mode) to wait
7425 for a target that is is executing user code to stop. */
7426 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7427 don't have to change all the calls to getpkt to deal with the
7428 return value, because at the moment I don't know what the right
7429 thing to do it for those. */
7437 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7441 /* Read a packet from the remote machine, with error checking, and
7442 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7443 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7444 rather than timing out; this is used (in synchronous mode) to wait
7445 for a target that is is executing user code to stop. If FOREVER ==
7446 0, this function is allowed to time out gracefully and return an
7447 indication of this to the caller. Otherwise return the number of
7448 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7449 enough reason to return to the caller. *IS_NOTIF is an output
7450 boolean that indicates whether *BUF holds a notification or not
7451 (a regular packet). */
7454 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7455 int expecting_notif
, int *is_notif
)
7457 struct remote_state
*rs
= get_remote_state ();
7463 /* We're reading a new response. Make sure we don't look at a
7464 previously cached response. */
7465 rs
->cached_wait_status
= 0;
7467 strcpy (*buf
, "timeout");
7470 timeout
= watchdog
> 0 ? watchdog
: -1;
7471 else if (expecting_notif
)
7472 timeout
= 0; /* There should already be a char in the buffer. If
7475 timeout
= remote_timeout
;
7479 /* Process any number of notifications, and then return when
7483 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7485 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7487 /* This can loop forever if the remote side sends us
7488 characters continuously, but if it pauses, we'll get
7489 SERIAL_TIMEOUT from readchar because of timeout. Then
7490 we'll count that as a retry.
7492 Note that even when forever is set, we will only wait
7493 forever prior to the start of a packet. After that, we
7494 expect characters to arrive at a brisk pace. They should
7495 show up within remote_timeout intervals. */
7497 c
= readchar (timeout
);
7498 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7500 if (c
== SERIAL_TIMEOUT
)
7502 if (expecting_notif
)
7503 return -1; /* Don't complain, it's normal to not get
7504 anything in this case. */
7506 if (forever
) /* Watchdog went off? Kill the target. */
7510 error (_("Watchdog timeout has expired. Target detached."));
7513 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7517 /* We've found the start of a packet or notification.
7518 Now collect the data. */
7519 val
= read_frame (buf
, sizeof_buf
);
7524 serial_write (remote_desc
, "-", 1);
7527 if (tries
> MAX_TRIES
)
7529 /* We have tried hard enough, and just can't receive the
7530 packet/notification. Give up. */
7531 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7533 /* Skip the ack char if we're in no-ack mode. */
7534 if (!rs
->noack_mode
)
7535 serial_write (remote_desc
, "+", 1);
7539 /* If we got an ordinary packet, return that to our caller. */
7544 struct cleanup
*old_chain
;
7547 str
= escape_buffer (*buf
, val
);
7548 old_chain
= make_cleanup (xfree
, str
);
7549 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7550 do_cleanups (old_chain
);
7553 /* Skip the ack char if we're in no-ack mode. */
7554 if (!rs
->noack_mode
)
7555 serial_write (remote_desc
, "+", 1);
7556 if (is_notif
!= NULL
)
7561 /* If we got a notification, handle it, and go back to looking
7565 gdb_assert (c
== '%');
7569 struct cleanup
*old_chain
;
7572 str
= escape_buffer (*buf
, val
);
7573 old_chain
= make_cleanup (xfree
, str
);
7574 fprintf_unfiltered (gdb_stdlog
,
7575 " Notification received: %s\n",
7577 do_cleanups (old_chain
);
7579 if (is_notif
!= NULL
)
7582 handle_notification (*buf
);
7584 /* Notifications require no acknowledgement. */
7586 if (expecting_notif
)
7593 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7595 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7599 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7602 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7607 /* A helper function that just calls putpkt; for type correctness. */
7610 putpkt_for_catch_errors (void *arg
)
7612 return putpkt (arg
);
7616 remote_kill (struct target_ops
*ops
)
7618 /* Use catch_errors so the user can quit from gdb even when we
7619 aren't on speaking terms with the remote system. */
7620 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7622 /* Don't wait for it to die. I'm not really sure it matters whether
7623 we do or not. For the existing stubs, kill is a noop. */
7624 target_mourn_inferior ();
7628 remote_vkill (int pid
, struct remote_state
*rs
)
7630 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7633 /* Tell the remote target to detach. */
7634 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7638 if (packet_ok (rs
->buf
,
7639 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7641 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7648 extended_remote_kill (struct target_ops
*ops
)
7651 int pid
= ptid_get_pid (inferior_ptid
);
7652 struct remote_state
*rs
= get_remote_state ();
7654 res
= remote_vkill (pid
, rs
);
7655 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7657 /* Don't try 'k' on a multi-process aware stub -- it has no way
7658 to specify the pid. */
7662 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7663 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7666 /* Don't wait for it to die. I'm not really sure it matters whether
7667 we do or not. For the existing stubs, kill is a noop. */
7673 error (_("Can't kill process"));
7675 target_mourn_inferior ();
7679 remote_mourn (struct target_ops
*ops
)
7681 remote_mourn_1 (ops
);
7684 /* Worker function for remote_mourn. */
7686 remote_mourn_1 (struct target_ops
*target
)
7688 unpush_target (target
);
7690 /* remote_close takes care of doing most of the clean up. */
7691 generic_mourn_inferior ();
7695 extended_remote_mourn_1 (struct target_ops
*target
)
7697 struct remote_state
*rs
= get_remote_state ();
7699 /* In case we got here due to an error, but we're going to stay
7701 rs
->waiting_for_stop_reply
= 0;
7703 /* If the current general thread belonged to the process we just
7704 detached from or has exited, the remote side current general
7705 thread becomes undefined. Considering a case like this:
7707 - We just got here due to a detach.
7708 - The process that we're detaching from happens to immediately
7709 report a global breakpoint being hit in non-stop mode, in the
7710 same thread we had selected before.
7711 - GDB attaches to this process again.
7712 - This event happens to be the next event we handle.
7714 GDB would consider that the current general thread didn't need to
7715 be set on the stub side (with Hg), since for all it knew,
7716 GENERAL_THREAD hadn't changed.
7718 Notice that although in all-stop mode, the remote server always
7719 sets the current thread to the thread reporting the stop event,
7720 that doesn't happen in non-stop mode; in non-stop, the stub *must
7721 not* change the current thread when reporting a breakpoint hit,
7722 due to the decoupling of event reporting and event handling.
7724 To keep things simple, we always invalidate our notion of the
7726 record_currthread (minus_one_ptid
);
7728 /* Unlike "target remote", we do not want to unpush the target; then
7729 the next time the user says "run", we won't be connected. */
7731 /* Call common code to mark the inferior as not running. */
7732 generic_mourn_inferior ();
7734 if (!have_inferiors ())
7736 if (!remote_multi_process_p (rs
))
7738 /* Check whether the target is running now - some remote stubs
7739 automatically restart after kill. */
7741 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7743 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7745 /* Assume that the target has been restarted. Set
7746 inferior_ptid so that bits of core GDB realizes
7747 there's something here, e.g., so that the user can
7748 say "kill" again. */
7749 inferior_ptid
= magic_null_ptid
;
7756 extended_remote_mourn (struct target_ops
*ops
)
7758 extended_remote_mourn_1 (ops
);
7762 extended_remote_supports_disable_randomization (void)
7764 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7769 extended_remote_disable_randomization (int val
)
7771 struct remote_state
*rs
= get_remote_state ();
7774 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7777 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7779 error (_("Target does not support QDisableRandomization."));
7780 if (strcmp (reply
, "OK") != 0)
7781 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7785 extended_remote_run (char *args
)
7787 struct remote_state
*rs
= get_remote_state ();
7790 /* If the user has disabled vRun support, or we have detected that
7791 support is not available, do not try it. */
7792 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7795 strcpy (rs
->buf
, "vRun;");
7796 len
= strlen (rs
->buf
);
7798 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7799 error (_("Remote file name too long for run packet"));
7800 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7802 gdb_assert (args
!= NULL
);
7805 struct cleanup
*back_to
;
7809 argv
= gdb_buildargv (args
);
7810 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7811 for (i
= 0; argv
[i
] != NULL
; i
++)
7813 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7814 error (_("Argument list too long for run packet"));
7815 rs
->buf
[len
++] = ';';
7816 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7818 do_cleanups (back_to
);
7821 rs
->buf
[len
++] = '\0';
7824 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7826 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7828 /* We have a wait response; we don't need it, though. All is well. */
7831 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7832 /* It wasn't disabled before, but it is now. */
7836 if (remote_exec_file
[0] == '\0')
7837 error (_("Running the default executable on the remote target failed; "
7838 "try \"set remote exec-file\"?"));
7840 error (_("Running \"%s\" on the remote target failed"),
7845 /* In the extended protocol we want to be able to do things like
7846 "run" and have them basically work as expected. So we need
7847 a special create_inferior function. We support changing the
7848 executable file and the command line arguments, but not the
7852 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7853 char **env
, int from_tty
)
7855 /* If running asynchronously, register the target file descriptor
7856 with the event loop. */
7857 if (target_can_async_p ())
7858 target_async (inferior_event_handler
, 0);
7860 /* Disable address space randomization if requested (and supported). */
7861 if (extended_remote_supports_disable_randomization ())
7862 extended_remote_disable_randomization (disable_randomization
);
7864 /* Now restart the remote server. */
7865 if (extended_remote_run (args
) == -1)
7867 /* vRun was not supported. Fail if we need it to do what the
7869 if (remote_exec_file
[0])
7870 error (_("Remote target does not support \"set remote exec-file\""));
7872 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7874 /* Fall back to "R". */
7875 extended_remote_restart ();
7878 if (!have_inferiors ())
7880 /* Clean up from the last time we ran, before we mark the target
7881 running again. This will mark breakpoints uninserted, and
7882 get_offsets may insert breakpoints. */
7883 init_thread_list ();
7884 init_wait_for_inferior ();
7887 add_current_inferior_and_thread ();
7889 /* Get updated offsets, if the stub uses qOffsets. */
7894 extended_remote_create_inferior (struct target_ops
*ops
,
7895 char *exec_file
, char *args
,
7896 char **env
, int from_tty
)
7898 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7902 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7903 the list of conditions (in agent expression bytecode format), if any, the
7904 target needs to evaluate. The output is placed into the packet buffer
7905 started from BUF and ended at BUF_END. */
7908 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7909 struct bp_target_info
*bp_tgt
, char *buf
,
7912 struct agent_expr
*aexpr
= NULL
;
7915 char *buf_start
= buf
;
7917 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7920 buf
+= strlen (buf
);
7921 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
7924 /* Send conditions to the target and free the vector. */
7926 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
7929 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
7930 buf
+= strlen (buf
);
7931 for (i
= 0; i
< aexpr
->len
; ++i
)
7932 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7936 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
7941 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
7942 struct bp_target_info
*bp_tgt
, char *buf
)
7944 struct agent_expr
*aexpr
= NULL
;
7947 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
7950 buf
+= strlen (buf
);
7952 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
7953 buf
+= strlen (buf
);
7955 /* Concatenate all the agent expressions that are commands into the
7958 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
7961 sprintf (buf
, "X%x,", aexpr
->len
);
7962 buf
+= strlen (buf
);
7963 for (i
= 0; i
< aexpr
->len
; ++i
)
7964 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7968 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
7971 /* Insert a breakpoint. On targets that have software breakpoint
7972 support, we ask the remote target to do the work; on targets
7973 which don't, we insert a traditional memory breakpoint. */
7976 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7977 struct bp_target_info
*bp_tgt
)
7979 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7980 If it succeeds, then set the support to PACKET_ENABLE. If it
7981 fails, and the user has explicitly requested the Z support then
7982 report an error, otherwise, mark it disabled and go on. */
7984 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7986 CORE_ADDR addr
= bp_tgt
->placed_address
;
7987 struct remote_state
*rs
;
7990 struct condition_list
*cond
= NULL
;
7992 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7994 rs
= get_remote_state ();
7996 endbuf
= rs
->buf
+ get_remote_packet_size ();
8001 addr
= (ULONGEST
) remote_address_masked (addr
);
8002 p
+= hexnumstr (p
, addr
);
8003 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8005 if (remote_supports_cond_breakpoints ())
8006 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8008 if (remote_can_run_breakpoint_commands ())
8009 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8012 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8014 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8019 bp_tgt
->placed_address
= addr
;
8020 bp_tgt
->placed_size
= bpsize
;
8022 case PACKET_UNKNOWN
:
8027 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8031 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8032 struct bp_target_info
*bp_tgt
)
8034 CORE_ADDR addr
= bp_tgt
->placed_address
;
8035 struct remote_state
*rs
= get_remote_state ();
8037 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8040 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8046 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8047 p
+= hexnumstr (p
, addr
);
8048 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8053 return (rs
->buf
[0] == 'E');
8056 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8060 watchpoint_to_Z_packet (int type
)
8065 return Z_PACKET_WRITE_WP
;
8068 return Z_PACKET_READ_WP
;
8071 return Z_PACKET_ACCESS_WP
;
8074 internal_error (__FILE__
, __LINE__
,
8075 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8080 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8081 struct expression
*cond
)
8083 struct remote_state
*rs
= get_remote_state ();
8084 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8086 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8088 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8091 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8092 p
= strchr (rs
->buf
, '\0');
8093 addr
= remote_address_masked (addr
);
8094 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8095 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8098 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8100 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8104 case PACKET_UNKNOWN
:
8109 internal_error (__FILE__
, __LINE__
,
8110 _("remote_insert_watchpoint: reached end of function"));
8114 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8115 CORE_ADDR start
, int length
)
8117 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8119 return diff
< length
;
8124 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8125 struct expression
*cond
)
8127 struct remote_state
*rs
= get_remote_state ();
8128 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8130 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8132 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8135 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8136 p
= strchr (rs
->buf
, '\0');
8137 addr
= remote_address_masked (addr
);
8138 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8139 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8141 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8143 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8146 case PACKET_UNKNOWN
:
8151 internal_error (__FILE__
, __LINE__
,
8152 _("remote_remove_watchpoint: reached end of function"));
8156 int remote_hw_watchpoint_limit
= -1;
8157 int remote_hw_watchpoint_length_limit
= -1;
8158 int remote_hw_breakpoint_limit
= -1;
8161 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8163 if (remote_hw_watchpoint_length_limit
== 0)
8165 else if (remote_hw_watchpoint_length_limit
< 0)
8167 else if (len
<= remote_hw_watchpoint_length_limit
)
8174 remote_check_watch_resources (int type
, int cnt
, int ot
)
8176 if (type
== bp_hardware_breakpoint
)
8178 if (remote_hw_breakpoint_limit
== 0)
8180 else if (remote_hw_breakpoint_limit
< 0)
8182 else if (cnt
<= remote_hw_breakpoint_limit
)
8187 if (remote_hw_watchpoint_limit
== 0)
8189 else if (remote_hw_watchpoint_limit
< 0)
8193 else if (cnt
<= remote_hw_watchpoint_limit
)
8200 remote_stopped_by_watchpoint (void)
8202 return remote_stopped_by_watchpoint_p
;
8206 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8210 if (remote_stopped_by_watchpoint ())
8212 *addr_p
= remote_watch_data_address
;
8221 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8222 struct bp_target_info
*bp_tgt
)
8225 struct remote_state
*rs
;
8229 /* The length field should be set to the size of a breakpoint
8230 instruction, even though we aren't inserting one ourselves. */
8232 gdbarch_remote_breakpoint_from_pc
8233 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8235 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8238 rs
= get_remote_state ();
8240 endbuf
= rs
->buf
+ get_remote_packet_size ();
8246 addr
= remote_address_masked (bp_tgt
->placed_address
);
8247 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8248 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8250 if (remote_supports_cond_breakpoints ())
8251 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8253 if (remote_can_run_breakpoint_commands ())
8254 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8257 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8259 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8262 if (rs
->buf
[1] == '.')
8264 message
= strchr (rs
->buf
+ 2, '.');
8266 error (_("Remote failure reply: %s"), message
+ 1);
8269 case PACKET_UNKNOWN
:
8274 internal_error (__FILE__
, __LINE__
,
8275 _("remote_insert_hw_breakpoint: reached end of function"));
8280 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8281 struct bp_target_info
*bp_tgt
)
8284 struct remote_state
*rs
= get_remote_state ();
8286 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8288 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8295 addr
= remote_address_masked (bp_tgt
->placed_address
);
8296 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8297 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8300 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8302 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8305 case PACKET_UNKNOWN
:
8310 internal_error (__FILE__
, __LINE__
,
8311 _("remote_remove_hw_breakpoint: reached end of function"));
8314 /* Table used by the crc32 function to calcuate the checksum. */
8316 static unsigned long crc32_table
[256] =
8319 static unsigned long
8320 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8322 if (!crc32_table
[1])
8324 /* Initialize the CRC table and the decoding table. */
8328 for (i
= 0; i
< 256; i
++)
8330 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8331 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8338 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8344 /* Verify memory using the "qCRC:" request. */
8347 remote_verify_memory (struct target_ops
*ops
,
8348 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8350 struct remote_state
*rs
= get_remote_state ();
8351 unsigned long host_crc
, target_crc
;
8354 /* FIXME: assumes lma can fit into long. */
8355 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8356 (long) lma
, (long) size
);
8359 /* Be clever; compute the host_crc before waiting for target
8361 host_crc
= crc32 (data
, size
, 0xffffffff);
8363 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8364 if (rs
->buf
[0] == 'E')
8367 if (rs
->buf
[0] != 'C')
8368 error (_("remote target does not support this operation"));
8370 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8371 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8373 return (host_crc
== target_crc
);
8376 /* compare-sections command
8378 With no arguments, compares each loadable section in the exec bfd
8379 with the same memory range on the target, and reports mismatches.
8380 Useful for verifying the image on the target against the exec file. */
8383 compare_sections_command (char *args
, int from_tty
)
8386 struct cleanup
*old_chain
;
8388 const char *sectname
;
8396 error (_("command cannot be used without an exec file"));
8398 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8400 if (!(s
->flags
& SEC_LOAD
))
8401 continue; /* Skip non-loadable section. */
8403 size
= bfd_get_section_size (s
);
8405 continue; /* Skip zero-length section. */
8407 sectname
= bfd_get_section_name (exec_bfd
, s
);
8408 if (args
&& strcmp (args
, sectname
) != 0)
8409 continue; /* Not the section selected by user. */
8411 matched
= 1; /* Do this section. */
8414 sectdata
= xmalloc (size
);
8415 old_chain
= make_cleanup (xfree
, sectdata
);
8416 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8418 res
= target_verify_memory (sectdata
, lma
, size
);
8421 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8422 paddress (target_gdbarch (), lma
),
8423 paddress (target_gdbarch (), lma
+ size
));
8425 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8426 paddress (target_gdbarch (), lma
),
8427 paddress (target_gdbarch (), lma
+ size
));
8429 printf_filtered ("matched.\n");
8432 printf_filtered ("MIS-MATCHED!\n");
8436 do_cleanups (old_chain
);
8439 warning (_("One or more sections of the remote executable does not match\n\
8440 the loaded file\n"));
8441 if (args
&& !matched
)
8442 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8445 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8446 into remote target. The number of bytes written to the remote
8447 target is returned, or -1 for error. */
8450 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8451 const char *annex
, const gdb_byte
*writebuf
,
8452 ULONGEST offset
, LONGEST len
,
8453 struct packet_config
*packet
)
8457 struct remote_state
*rs
= get_remote_state ();
8458 int max_size
= get_memory_write_packet_size ();
8460 if (packet
->support
== PACKET_DISABLE
)
8463 /* Insert header. */
8464 i
= snprintf (rs
->buf
, max_size
,
8465 "qXfer:%s:write:%s:%s:",
8466 object_name
, annex
? annex
: "",
8467 phex_nz (offset
, sizeof offset
));
8468 max_size
-= (i
+ 1);
8470 /* Escape as much data as fits into rs->buf. */
8471 buf_len
= remote_escape_output
8472 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8474 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8475 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8476 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8479 unpack_varlen_hex (rs
->buf
, &n
);
8483 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8484 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8485 number of bytes read is returned, or 0 for EOF, or -1 for error.
8486 The number of bytes read may be less than LEN without indicating an
8487 EOF. PACKET is checked and updated to indicate whether the remote
8488 target supports this object. */
8491 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8493 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8494 struct packet_config
*packet
)
8496 static char *finished_object
;
8497 static char *finished_annex
;
8498 static ULONGEST finished_offset
;
8500 struct remote_state
*rs
= get_remote_state ();
8501 LONGEST i
, n
, packet_len
;
8503 if (packet
->support
== PACKET_DISABLE
)
8506 /* Check whether we've cached an end-of-object packet that matches
8508 if (finished_object
)
8510 if (strcmp (object_name
, finished_object
) == 0
8511 && strcmp (annex
? annex
: "", finished_annex
) == 0
8512 && offset
== finished_offset
)
8515 /* Otherwise, we're now reading something different. Discard
8517 xfree (finished_object
);
8518 xfree (finished_annex
);
8519 finished_object
= NULL
;
8520 finished_annex
= NULL
;
8523 /* Request only enough to fit in a single packet. The actual data
8524 may not, since we don't know how much of it will need to be escaped;
8525 the target is free to respond with slightly less data. We subtract
8526 five to account for the response type and the protocol frame. */
8527 n
= min (get_remote_packet_size () - 5, len
);
8528 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8529 object_name
, annex
? annex
: "",
8530 phex_nz (offset
, sizeof offset
),
8531 phex_nz (n
, sizeof n
));
8532 i
= putpkt (rs
->buf
);
8537 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8538 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8541 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8542 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8544 /* 'm' means there is (or at least might be) more data after this
8545 batch. That does not make sense unless there's at least one byte
8546 of data in this reply. */
8547 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8548 error (_("Remote qXfer reply contained no data."));
8550 /* Got some data. */
8551 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8553 /* 'l' is an EOF marker, possibly including a final block of data,
8554 or possibly empty. If we have the final block of a non-empty
8555 object, record this fact to bypass a subsequent partial read. */
8556 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8558 finished_object
= xstrdup (object_name
);
8559 finished_annex
= xstrdup (annex
? annex
: "");
8560 finished_offset
= offset
+ i
;
8567 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8568 const char *annex
, gdb_byte
*readbuf
,
8569 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8571 struct remote_state
*rs
;
8576 set_remote_traceframe ();
8577 set_general_thread (inferior_ptid
);
8579 rs
= get_remote_state ();
8581 /* Handle memory using the standard memory routines. */
8582 if (object
== TARGET_OBJECT_MEMORY
)
8588 /* If the remote target is connected but not running, we should
8589 pass this request down to a lower stratum (e.g. the executable
8591 if (!target_has_execution
)
8594 if (writebuf
!= NULL
)
8595 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8597 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8601 else if (xfered
== 0 && errno
== 0)
8607 /* Handle SPU memory using qxfer packets. */
8608 if (object
== TARGET_OBJECT_SPU
)
8611 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8612 &remote_protocol_packets
8613 [PACKET_qXfer_spu_read
]);
8615 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8616 &remote_protocol_packets
8617 [PACKET_qXfer_spu_write
]);
8620 /* Handle extra signal info using qxfer packets. */
8621 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8624 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8625 &remote_protocol_packets
8626 [PACKET_qXfer_siginfo_read
]);
8628 return remote_write_qxfer (ops
, "siginfo", annex
,
8629 writebuf
, offset
, len
,
8630 &remote_protocol_packets
8631 [PACKET_qXfer_siginfo_write
]);
8634 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8637 return remote_read_qxfer (ops
, "statictrace", annex
,
8638 readbuf
, offset
, len
,
8639 &remote_protocol_packets
8640 [PACKET_qXfer_statictrace_read
]);
8645 /* Only handle flash writes. */
8646 if (writebuf
!= NULL
)
8652 case TARGET_OBJECT_FLASH
:
8653 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8657 else if (xfered
== 0 && errno
== 0)
8667 /* Map pre-existing objects onto letters. DO NOT do this for new
8668 objects!!! Instead specify new query packets. */
8671 case TARGET_OBJECT_AVR
:
8675 case TARGET_OBJECT_AUXV
:
8676 gdb_assert (annex
== NULL
);
8677 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8678 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8680 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8681 return remote_read_qxfer
8682 (ops
, "features", annex
, readbuf
, offset
, len
,
8683 &remote_protocol_packets
[PACKET_qXfer_features
]);
8685 case TARGET_OBJECT_LIBRARIES
:
8686 return remote_read_qxfer
8687 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8688 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8690 case TARGET_OBJECT_LIBRARIES_SVR4
:
8691 return remote_read_qxfer
8692 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8693 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8695 case TARGET_OBJECT_MEMORY_MAP
:
8696 gdb_assert (annex
== NULL
);
8697 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8698 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8700 case TARGET_OBJECT_OSDATA
:
8701 /* Should only get here if we're connected. */
8702 gdb_assert (remote_desc
);
8703 return remote_read_qxfer
8704 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8705 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8707 case TARGET_OBJECT_THREADS
:
8708 gdb_assert (annex
== NULL
);
8709 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8710 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8712 case TARGET_OBJECT_TRACEFRAME_INFO
:
8713 gdb_assert (annex
== NULL
);
8714 return remote_read_qxfer
8715 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8716 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8718 case TARGET_OBJECT_FDPIC
:
8719 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8720 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8722 case TARGET_OBJECT_OPENVMS_UIB
:
8723 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8724 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8730 /* Note: a zero OFFSET and LEN can be used to query the minimum
8732 if (offset
== 0 && len
== 0)
8733 return (get_remote_packet_size ());
8734 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8735 large enough let the caller deal with it. */
8736 if (len
< get_remote_packet_size ())
8738 len
= get_remote_packet_size ();
8740 /* Except for querying the minimum buffer size, target must be open. */
8742 error (_("remote query is only available after target open"));
8744 gdb_assert (annex
!= NULL
);
8745 gdb_assert (readbuf
!= NULL
);
8751 /* We used one buffer char for the remote protocol q command and
8752 another for the query type. As the remote protocol encapsulation
8753 uses 4 chars plus one extra in case we are debugging
8754 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8757 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8759 /* Bad caller may have sent forbidden characters. */
8760 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8765 gdb_assert (annex
[i
] == '\0');
8767 i
= putpkt (rs
->buf
);
8771 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8772 strcpy ((char *) readbuf
, rs
->buf
);
8774 return strlen ((char *) readbuf
);
8778 remote_search_memory (struct target_ops
* ops
,
8779 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8780 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8781 CORE_ADDR
*found_addrp
)
8783 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8784 struct remote_state
*rs
= get_remote_state ();
8785 int max_size
= get_memory_write_packet_size ();
8786 struct packet_config
*packet
=
8787 &remote_protocol_packets
[PACKET_qSearch_memory
];
8788 /* Number of packet bytes used to encode the pattern;
8789 this could be more than PATTERN_LEN due to escape characters. */
8790 int escaped_pattern_len
;
8791 /* Amount of pattern that was encodable in the packet. */
8792 int used_pattern_len
;
8795 ULONGEST found_addr
;
8797 /* Don't go to the target if we don't have to.
8798 This is done before checking packet->support to avoid the possibility that
8799 a success for this edge case means the facility works in general. */
8800 if (pattern_len
> search_space_len
)
8802 if (pattern_len
== 0)
8804 *found_addrp
= start_addr
;
8808 /* If we already know the packet isn't supported, fall back to the simple
8809 way of searching memory. */
8811 if (packet
->support
== PACKET_DISABLE
)
8813 /* Target doesn't provided special support, fall back and use the
8814 standard support (copy memory and do the search here). */
8815 return simple_search_memory (ops
, start_addr
, search_space_len
,
8816 pattern
, pattern_len
, found_addrp
);
8819 /* Insert header. */
8820 i
= snprintf (rs
->buf
, max_size
,
8821 "qSearch:memory:%s;%s;",
8822 phex_nz (start_addr
, addr_size
),
8823 phex_nz (search_space_len
, sizeof (search_space_len
)));
8824 max_size
-= (i
+ 1);
8826 /* Escape as much data as fits into rs->buf. */
8827 escaped_pattern_len
=
8828 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8829 &used_pattern_len
, max_size
);
8831 /* Bail if the pattern is too large. */
8832 if (used_pattern_len
!= pattern_len
)
8833 error (_("Pattern is too large to transmit to remote target."));
8835 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8836 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8837 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8839 /* The request may not have worked because the command is not
8840 supported. If so, fall back to the simple way. */
8841 if (packet
->support
== PACKET_DISABLE
)
8843 return simple_search_memory (ops
, start_addr
, search_space_len
,
8844 pattern
, pattern_len
, found_addrp
);
8849 if (rs
->buf
[0] == '0')
8851 else if (rs
->buf
[0] == '1')
8854 if (rs
->buf
[1] != ',')
8855 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8856 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8857 *found_addrp
= found_addr
;
8860 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8866 remote_rcmd (char *command
,
8867 struct ui_file
*outbuf
)
8869 struct remote_state
*rs
= get_remote_state ();
8873 error (_("remote rcmd is only available after target open"));
8875 /* Send a NULL command across as an empty command. */
8876 if (command
== NULL
)
8879 /* The query prefix. */
8880 strcpy (rs
->buf
, "qRcmd,");
8881 p
= strchr (rs
->buf
, '\0');
8883 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8884 > get_remote_packet_size ())
8885 error (_("\"monitor\" command ``%s'' is too long."), command
);
8887 /* Encode the actual command. */
8888 bin2hex ((gdb_byte
*) command
, p
, 0);
8890 if (putpkt (rs
->buf
) < 0)
8891 error (_("Communication problem with target."));
8893 /* get/display the response */
8898 /* XXX - see also remote_get_noisy_reply(). */
8899 QUIT
; /* Allow user to bail out with ^C. */
8901 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8903 /* Timeout. Continue to (try to) read responses.
8904 This is better than stopping with an error, assuming the stub
8905 is still executing the (long) monitor command.
8906 If needed, the user can interrupt gdb using C-c, obtaining
8907 an effect similar to stop on timeout. */
8912 error (_("Target does not support this command."));
8913 if (buf
[0] == 'O' && buf
[1] != 'K')
8915 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8918 if (strcmp (buf
, "OK") == 0)
8920 if (strlen (buf
) == 3 && buf
[0] == 'E'
8921 && isdigit (buf
[1]) && isdigit (buf
[2]))
8923 error (_("Protocol error with Rcmd"));
8925 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8927 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8929 fputc_unfiltered (c
, outbuf
);
8935 static VEC(mem_region_s
) *
8936 remote_memory_map (struct target_ops
*ops
)
8938 VEC(mem_region_s
) *result
= NULL
;
8939 char *text
= target_read_stralloc (¤t_target
,
8940 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8944 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8946 result
= parse_memory_map (text
);
8947 do_cleanups (back_to
);
8954 packet_command (char *args
, int from_tty
)
8956 struct remote_state
*rs
= get_remote_state ();
8959 error (_("command can only be used with remote target"));
8962 error (_("remote-packet command requires packet text as argument"));
8964 puts_filtered ("sending: ");
8965 print_packet (args
);
8966 puts_filtered ("\n");
8969 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8970 puts_filtered ("received: ");
8971 print_packet (rs
->buf
);
8972 puts_filtered ("\n");
8976 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8978 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8980 static void threadset_test_cmd (char *cmd
, int tty
);
8982 static void threadalive_test (char *cmd
, int tty
);
8984 static void threadlist_test_cmd (char *cmd
, int tty
);
8986 int get_and_display_threadinfo (threadref
*ref
);
8988 static void threadinfo_test_cmd (char *cmd
, int tty
);
8990 static int thread_display_step (threadref
*ref
, void *context
);
8992 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8994 static void init_remote_threadtests (void);
8996 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8999 threadset_test_cmd (char *cmd
, int tty
)
9001 int sample_thread
= SAMPLE_THREAD
;
9003 printf_filtered (_("Remote threadset test\n"));
9004 set_general_thread (sample_thread
);
9009 threadalive_test (char *cmd
, int tty
)
9011 int sample_thread
= SAMPLE_THREAD
;
9012 int pid
= ptid_get_pid (inferior_ptid
);
9013 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9015 if (remote_thread_alive (ptid
))
9016 printf_filtered ("PASS: Thread alive test\n");
9018 printf_filtered ("FAIL: Thread alive test\n");
9021 void output_threadid (char *title
, threadref
*ref
);
9024 output_threadid (char *title
, threadref
*ref
)
9028 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9030 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9034 threadlist_test_cmd (char *cmd
, int tty
)
9037 threadref nextthread
;
9038 int done
, result_count
;
9039 threadref threadlist
[3];
9041 printf_filtered ("Remote Threadlist test\n");
9042 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9043 &result_count
, &threadlist
[0]))
9044 printf_filtered ("FAIL: threadlist test\n");
9047 threadref
*scan
= threadlist
;
9048 threadref
*limit
= scan
+ result_count
;
9050 while (scan
< limit
)
9051 output_threadid (" thread ", scan
++);
9056 display_thread_info (struct gdb_ext_thread_info
*info
)
9058 output_threadid ("Threadid: ", &info
->threadid
);
9059 printf_filtered ("Name: %s\n ", info
->shortname
);
9060 printf_filtered ("State: %s\n", info
->display
);
9061 printf_filtered ("other: %s\n\n", info
->more_display
);
9065 get_and_display_threadinfo (threadref
*ref
)
9069 struct gdb_ext_thread_info threadinfo
;
9071 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9072 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9073 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9074 display_thread_info (&threadinfo
);
9079 threadinfo_test_cmd (char *cmd
, int tty
)
9081 int athread
= SAMPLE_THREAD
;
9085 int_to_threadref (&thread
, athread
);
9086 printf_filtered ("Remote Threadinfo test\n");
9087 if (!get_and_display_threadinfo (&thread
))
9088 printf_filtered ("FAIL cannot get thread info\n");
9092 thread_display_step (threadref
*ref
, void *context
)
9094 /* output_threadid(" threadstep ",ref); *//* simple test */
9095 return get_and_display_threadinfo (ref
);
9099 threadlist_update_test_cmd (char *cmd
, int tty
)
9101 printf_filtered ("Remote Threadlist update test\n");
9102 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9106 init_remote_threadtests (void)
9108 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9109 _("Fetch and print the remote list of "
9110 "thread identifiers, one pkt only"));
9111 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9112 _("Fetch and display info about one thread"));
9113 add_com ("tset", class_obscure
, threadset_test_cmd
,
9114 _("Test setting to a different thread"));
9115 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9116 _("Iterate through updating all remote thread info"));
9117 add_com ("talive", class_obscure
, threadalive_test
,
9118 _(" Remote thread alive test "));
9123 /* Convert a thread ID to a string. Returns the string in a static
9127 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9129 static char buf
[64];
9130 struct remote_state
*rs
= get_remote_state ();
9132 if (ptid_equal (ptid
, null_ptid
))
9133 return normal_pid_to_str (ptid
);
9134 else if (ptid_is_pid (ptid
))
9136 /* Printing an inferior target id. */
9138 /* When multi-process extensions are off, there's no way in the
9139 remote protocol to know the remote process id, if there's any
9140 at all. There's one exception --- when we're connected with
9141 target extended-remote, and we manually attached to a process
9142 with "attach PID". We don't record anywhere a flag that
9143 allows us to distinguish that case from the case of
9144 connecting with extended-remote and the stub already being
9145 attached to a process, and reporting yes to qAttached, hence
9146 no smart special casing here. */
9147 if (!remote_multi_process_p (rs
))
9149 xsnprintf (buf
, sizeof buf
, "Remote target");
9153 return normal_pid_to_str (ptid
);
9157 if (ptid_equal (magic_null_ptid
, ptid
))
9158 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9159 else if (rs
->extended
&& remote_multi_process_p (rs
))
9160 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9161 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9163 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9164 ptid_get_tid (ptid
));
9169 /* Get the address of the thread local variable in OBJFILE which is
9170 stored at OFFSET within the thread local storage for thread PTID. */
9173 remote_get_thread_local_address (struct target_ops
*ops
,
9174 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9176 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9178 struct remote_state
*rs
= get_remote_state ();
9180 char *endp
= rs
->buf
+ get_remote_packet_size ();
9181 enum packet_result result
;
9183 strcpy (p
, "qGetTLSAddr:");
9185 p
= write_ptid (p
, endp
, ptid
);
9187 p
+= hexnumstr (p
, offset
);
9189 p
+= hexnumstr (p
, lm
);
9193 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9194 result
= packet_ok (rs
->buf
,
9195 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9196 if (result
== PACKET_OK
)
9200 unpack_varlen_hex (rs
->buf
, &result
);
9203 else if (result
== PACKET_UNKNOWN
)
9204 throw_error (TLS_GENERIC_ERROR
,
9205 _("Remote target doesn't support qGetTLSAddr packet"));
9207 throw_error (TLS_GENERIC_ERROR
,
9208 _("Remote target failed to process qGetTLSAddr request"));
9211 throw_error (TLS_GENERIC_ERROR
,
9212 _("TLS not supported or disabled on this target"));
9217 /* Provide thread local base, i.e. Thread Information Block address.
9218 Returns 1 if ptid is found and thread_local_base is non zero. */
9221 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9223 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9225 struct remote_state
*rs
= get_remote_state ();
9227 char *endp
= rs
->buf
+ get_remote_packet_size ();
9228 enum packet_result result
;
9230 strcpy (p
, "qGetTIBAddr:");
9232 p
= write_ptid (p
, endp
, ptid
);
9236 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9237 result
= packet_ok (rs
->buf
,
9238 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9239 if (result
== PACKET_OK
)
9243 unpack_varlen_hex (rs
->buf
, &result
);
9245 *addr
= (CORE_ADDR
) result
;
9248 else if (result
== PACKET_UNKNOWN
)
9249 error (_("Remote target doesn't support qGetTIBAddr packet"));
9251 error (_("Remote target failed to process qGetTIBAddr request"));
9254 error (_("qGetTIBAddr not supported or disabled on this target"));
9259 /* Support for inferring a target description based on the current
9260 architecture and the size of a 'g' packet. While the 'g' packet
9261 can have any size (since optional registers can be left off the
9262 end), some sizes are easily recognizable given knowledge of the
9263 approximate architecture. */
9265 struct remote_g_packet_guess
9268 const struct target_desc
*tdesc
;
9270 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9271 DEF_VEC_O(remote_g_packet_guess_s
);
9273 struct remote_g_packet_data
9275 VEC(remote_g_packet_guess_s
) *guesses
;
9278 static struct gdbarch_data
*remote_g_packet_data_handle
;
9281 remote_g_packet_data_init (struct obstack
*obstack
)
9283 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9287 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9288 const struct target_desc
*tdesc
)
9290 struct remote_g_packet_data
*data
9291 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9292 struct remote_g_packet_guess new_guess
, *guess
;
9295 gdb_assert (tdesc
!= NULL
);
9298 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9300 if (guess
->bytes
== bytes
)
9301 internal_error (__FILE__
, __LINE__
,
9302 _("Duplicate g packet description added for size %d"),
9305 new_guess
.bytes
= bytes
;
9306 new_guess
.tdesc
= tdesc
;
9307 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9310 /* Return 1 if remote_read_description would do anything on this target
9311 and architecture, 0 otherwise. */
9314 remote_read_description_p (struct target_ops
*target
)
9316 struct remote_g_packet_data
*data
9317 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9319 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9325 static const struct target_desc
*
9326 remote_read_description (struct target_ops
*target
)
9328 struct remote_g_packet_data
*data
9329 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9331 /* Do not try this during initial connection, when we do not know
9332 whether there is a running but stopped thread. */
9333 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9336 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9338 struct remote_g_packet_guess
*guess
;
9340 int bytes
= send_g_packet ();
9343 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9345 if (guess
->bytes
== bytes
)
9346 return guess
->tdesc
;
9348 /* We discard the g packet. A minor optimization would be to
9349 hold on to it, and fill the register cache once we have selected
9350 an architecture, but it's too tricky to do safely. */
9356 /* Remote file transfer support. This is host-initiated I/O, not
9357 target-initiated; for target-initiated, see remote-fileio.c. */
9359 /* If *LEFT is at least the length of STRING, copy STRING to
9360 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9361 decrease *LEFT. Otherwise raise an error. */
9364 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9366 int len
= strlen (string
);
9369 error (_("Packet too long for target."));
9371 memcpy (*buffer
, string
, len
);
9375 /* NUL-terminate the buffer as a convenience, if there is
9381 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9382 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9383 decrease *LEFT. Otherwise raise an error. */
9386 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9389 if (2 * len
> *left
)
9390 error (_("Packet too long for target."));
9392 bin2hex (bytes
, *buffer
, len
);
9396 /* NUL-terminate the buffer as a convenience, if there is
9402 /* If *LEFT is large enough, convert VALUE to hex and add it to
9403 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9404 decrease *LEFT. Otherwise raise an error. */
9407 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9409 int len
= hexnumlen (value
);
9412 error (_("Packet too long for target."));
9414 hexnumstr (*buffer
, value
);
9418 /* NUL-terminate the buffer as a convenience, if there is
9424 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9425 value, *REMOTE_ERRNO to the remote error number or zero if none
9426 was included, and *ATTACHMENT to point to the start of the annex
9427 if any. The length of the packet isn't needed here; there may
9428 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9430 Return 0 if the packet could be parsed, -1 if it could not. If
9431 -1 is returned, the other variables may not be initialized. */
9434 remote_hostio_parse_result (char *buffer
, int *retcode
,
9435 int *remote_errno
, char **attachment
)
9442 if (buffer
[0] != 'F')
9446 *retcode
= strtol (&buffer
[1], &p
, 16);
9447 if (errno
!= 0 || p
== &buffer
[1])
9450 /* Check for ",errno". */
9454 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9455 if (errno
!= 0 || p
+ 1 == p2
)
9460 /* Check for ";attachment". If there is no attachment, the
9461 packet should end here. */
9464 *attachment
= p
+ 1;
9467 else if (*p
== '\0')
9473 /* Send a prepared I/O packet to the target and read its response.
9474 The prepared packet is in the global RS->BUF before this function
9475 is called, and the answer is there when we return.
9477 COMMAND_BYTES is the length of the request to send, which may include
9478 binary data. WHICH_PACKET is the packet configuration to check
9479 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9480 is set to the error number and -1 is returned. Otherwise the value
9481 returned by the function is returned.
9483 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9484 attachment is expected; an error will be reported if there's a
9485 mismatch. If one is found, *ATTACHMENT will be set to point into
9486 the packet buffer and *ATTACHMENT_LEN will be set to the
9487 attachment's length. */
9490 remote_hostio_send_command (int command_bytes
, int which_packet
,
9491 int *remote_errno
, char **attachment
,
9492 int *attachment_len
)
9494 struct remote_state
*rs
= get_remote_state ();
9495 int ret
, bytes_read
;
9496 char *attachment_tmp
;
9499 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9501 *remote_errno
= FILEIO_ENOSYS
;
9505 putpkt_binary (rs
->buf
, command_bytes
);
9506 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9508 /* If it timed out, something is wrong. Don't try to parse the
9512 *remote_errno
= FILEIO_EINVAL
;
9516 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9519 *remote_errno
= FILEIO_EINVAL
;
9521 case PACKET_UNKNOWN
:
9522 *remote_errno
= FILEIO_ENOSYS
;
9528 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9531 *remote_errno
= FILEIO_EINVAL
;
9535 /* Make sure we saw an attachment if and only if we expected one. */
9536 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9537 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9539 *remote_errno
= FILEIO_EINVAL
;
9543 /* If an attachment was found, it must point into the packet buffer;
9544 work out how many bytes there were. */
9545 if (attachment_tmp
!= NULL
)
9547 *attachment
= attachment_tmp
;
9548 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9554 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9555 remote file descriptor, or -1 if an error occurs (and set
9559 remote_hostio_open (const char *filename
, int flags
, int mode
,
9562 struct remote_state
*rs
= get_remote_state ();
9564 int left
= get_remote_packet_size () - 1;
9566 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9568 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9570 remote_buffer_add_string (&p
, &left
, ",");
9572 remote_buffer_add_int (&p
, &left
, flags
);
9573 remote_buffer_add_string (&p
, &left
, ",");
9575 remote_buffer_add_int (&p
, &left
, mode
);
9577 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9578 remote_errno
, NULL
, NULL
);
9581 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9582 Return the number of bytes written, or -1 if an error occurs (and
9583 set *REMOTE_ERRNO). */
9586 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9587 ULONGEST offset
, int *remote_errno
)
9589 struct remote_state
*rs
= get_remote_state ();
9591 int left
= get_remote_packet_size ();
9594 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9596 remote_buffer_add_int (&p
, &left
, fd
);
9597 remote_buffer_add_string (&p
, &left
, ",");
9599 remote_buffer_add_int (&p
, &left
, offset
);
9600 remote_buffer_add_string (&p
, &left
, ",");
9602 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9603 get_remote_packet_size () - (p
- rs
->buf
));
9605 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9606 remote_errno
, NULL
, NULL
);
9609 /* Read up to LEN bytes FD on the remote target into READ_BUF
9610 Return the number of bytes read, or -1 if an error occurs (and
9611 set *REMOTE_ERRNO). */
9614 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9615 ULONGEST offset
, int *remote_errno
)
9617 struct remote_state
*rs
= get_remote_state ();
9620 int left
= get_remote_packet_size ();
9621 int ret
, attachment_len
;
9624 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9626 remote_buffer_add_int (&p
, &left
, fd
);
9627 remote_buffer_add_string (&p
, &left
, ",");
9629 remote_buffer_add_int (&p
, &left
, len
);
9630 remote_buffer_add_string (&p
, &left
, ",");
9632 remote_buffer_add_int (&p
, &left
, offset
);
9634 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9635 remote_errno
, &attachment
,
9641 read_len
= remote_unescape_input (attachment
, attachment_len
,
9643 if (read_len
!= ret
)
9644 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9649 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9650 (and set *REMOTE_ERRNO). */
9653 remote_hostio_close (int fd
, int *remote_errno
)
9655 struct remote_state
*rs
= get_remote_state ();
9657 int left
= get_remote_packet_size () - 1;
9659 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9661 remote_buffer_add_int (&p
, &left
, fd
);
9663 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9664 remote_errno
, NULL
, NULL
);
9667 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9668 occurs (and set *REMOTE_ERRNO). */
9671 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9673 struct remote_state
*rs
= get_remote_state ();
9675 int left
= get_remote_packet_size () - 1;
9677 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9679 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9682 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9683 remote_errno
, NULL
, NULL
);
9686 /* Read value of symbolic link FILENAME on the remote target. Return
9687 a null-terminated string allocated via xmalloc, or NULL if an error
9688 occurs (and set *REMOTE_ERRNO). */
9691 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9693 struct remote_state
*rs
= get_remote_state ();
9696 int left
= get_remote_packet_size ();
9697 int len
, attachment_len
;
9701 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9703 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9706 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9707 remote_errno
, &attachment
,
9713 ret
= xmalloc (len
+ 1);
9715 read_len
= remote_unescape_input (attachment
, attachment_len
,
9717 if (read_len
!= len
)
9718 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9725 remote_fileio_errno_to_host (int errnum
)
9749 case FILEIO_ENOTDIR
:
9769 case FILEIO_ENAMETOOLONG
:
9770 return ENAMETOOLONG
;
9776 remote_hostio_error (int errnum
)
9778 int host_error
= remote_fileio_errno_to_host (errnum
);
9780 if (host_error
== -1)
9781 error (_("Unknown remote I/O error %d"), errnum
);
9783 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9787 remote_hostio_close_cleanup (void *opaque
)
9789 int fd
= *(int *) opaque
;
9792 remote_hostio_close (fd
, &remote_errno
);
9797 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9799 const char *filename
= bfd_get_filename (abfd
);
9800 int fd
, remote_errno
;
9803 gdb_assert (remote_filename_p (filename
));
9805 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9808 errno
= remote_fileio_errno_to_host (remote_errno
);
9809 bfd_set_error (bfd_error_system_call
);
9813 stream
= xmalloc (sizeof (int));
9819 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9821 int fd
= *(int *)stream
;
9826 /* Ignore errors on close; these may happen if the remote
9827 connection was already torn down. */
9828 remote_hostio_close (fd
, &remote_errno
);
9834 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9835 file_ptr nbytes
, file_ptr offset
)
9837 int fd
= *(int *)stream
;
9839 file_ptr pos
, bytes
;
9842 while (nbytes
> pos
)
9844 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9845 offset
+ pos
, &remote_errno
);
9847 /* Success, but no bytes, means end-of-file. */
9851 errno
= remote_fileio_errno_to_host (remote_errno
);
9852 bfd_set_error (bfd_error_system_call
);
9863 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9865 /* FIXME: We should probably implement remote_hostio_stat. */
9866 sb
->st_size
= INT_MAX
;
9871 remote_filename_p (const char *filename
)
9873 return strncmp (filename
, "remote:", 7) == 0;
9877 remote_bfd_open (const char *remote_file
, const char *target
)
9879 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9880 remote_bfd_iovec_open
, NULL
,
9881 remote_bfd_iovec_pread
,
9882 remote_bfd_iovec_close
,
9883 remote_bfd_iovec_stat
);
9889 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9891 struct cleanup
*back_to
, *close_cleanup
;
9892 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9895 int bytes_in_buffer
;
9900 error (_("command can only be used with remote target"));
9902 file
= fopen (local_file
, "rb");
9904 perror_with_name (local_file
);
9905 back_to
= make_cleanup_fclose (file
);
9907 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9909 0700, &remote_errno
);
9911 remote_hostio_error (remote_errno
);
9913 /* Send up to this many bytes at once. They won't all fit in the
9914 remote packet limit, so we'll transfer slightly fewer. */
9915 io_size
= get_remote_packet_size ();
9916 buffer
= xmalloc (io_size
);
9917 make_cleanup (xfree
, buffer
);
9919 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9921 bytes_in_buffer
= 0;
9924 while (bytes_in_buffer
|| !saw_eof
)
9928 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9929 io_size
- bytes_in_buffer
,
9934 error (_("Error reading %s."), local_file
);
9937 /* EOF. Unless there is something still in the
9938 buffer from the last iteration, we are done. */
9940 if (bytes_in_buffer
== 0)
9948 bytes
+= bytes_in_buffer
;
9949 bytes_in_buffer
= 0;
9951 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9952 offset
, &remote_errno
);
9955 remote_hostio_error (remote_errno
);
9956 else if (retcode
== 0)
9957 error (_("Remote write of %d bytes returned 0!"), bytes
);
9958 else if (retcode
< bytes
)
9960 /* Short write. Save the rest of the read data for the next
9962 bytes_in_buffer
= bytes
- retcode
;
9963 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9969 discard_cleanups (close_cleanup
);
9970 if (remote_hostio_close (fd
, &remote_errno
))
9971 remote_hostio_error (remote_errno
);
9974 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9975 do_cleanups (back_to
);
9979 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9981 struct cleanup
*back_to
, *close_cleanup
;
9982 int fd
, remote_errno
, bytes
, io_size
;
9988 error (_("command can only be used with remote target"));
9990 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9992 remote_hostio_error (remote_errno
);
9994 file
= fopen (local_file
, "wb");
9996 perror_with_name (local_file
);
9997 back_to
= make_cleanup_fclose (file
);
9999 /* Send up to this many bytes at once. They won't all fit in the
10000 remote packet limit, so we'll transfer slightly fewer. */
10001 io_size
= get_remote_packet_size ();
10002 buffer
= xmalloc (io_size
);
10003 make_cleanup (xfree
, buffer
);
10005 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10010 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10012 /* Success, but no bytes, means end-of-file. */
10015 remote_hostio_error (remote_errno
);
10019 bytes
= fwrite (buffer
, 1, bytes
, file
);
10021 perror_with_name (local_file
);
10024 discard_cleanups (close_cleanup
);
10025 if (remote_hostio_close (fd
, &remote_errno
))
10026 remote_hostio_error (remote_errno
);
10029 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10030 do_cleanups (back_to
);
10034 remote_file_delete (const char *remote_file
, int from_tty
)
10036 int retcode
, remote_errno
;
10039 error (_("command can only be used with remote target"));
10041 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10043 remote_hostio_error (remote_errno
);
10046 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10050 remote_put_command (char *args
, int from_tty
)
10052 struct cleanup
*back_to
;
10056 error_no_arg (_("file to put"));
10058 argv
= gdb_buildargv (args
);
10059 back_to
= make_cleanup_freeargv (argv
);
10060 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10061 error (_("Invalid parameters to remote put"));
10063 remote_file_put (argv
[0], argv
[1], from_tty
);
10065 do_cleanups (back_to
);
10069 remote_get_command (char *args
, int from_tty
)
10071 struct cleanup
*back_to
;
10075 error_no_arg (_("file to get"));
10077 argv
= gdb_buildargv (args
);
10078 back_to
= make_cleanup_freeargv (argv
);
10079 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10080 error (_("Invalid parameters to remote get"));
10082 remote_file_get (argv
[0], argv
[1], from_tty
);
10084 do_cleanups (back_to
);
10088 remote_delete_command (char *args
, int from_tty
)
10090 struct cleanup
*back_to
;
10094 error_no_arg (_("file to delete"));
10096 argv
= gdb_buildargv (args
);
10097 back_to
= make_cleanup_freeargv (argv
);
10098 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10099 error (_("Invalid parameters to remote delete"));
10101 remote_file_delete (argv
[0], from_tty
);
10103 do_cleanups (back_to
);
10107 remote_command (char *args
, int from_tty
)
10109 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10113 remote_can_execute_reverse (void)
10115 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10116 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10123 remote_supports_non_stop (void)
10129 remote_supports_disable_randomization (void)
10131 /* Only supported in extended mode. */
10136 remote_supports_multi_process (void)
10138 struct remote_state
*rs
= get_remote_state ();
10140 /* Only extended-remote handles being attached to multiple
10141 processes, even though plain remote can use the multi-process
10142 thread id extensions, so that GDB knows the target process's
10144 return rs
->extended
&& remote_multi_process_p (rs
);
10148 remote_supports_cond_tracepoints (void)
10150 struct remote_state
*rs
= get_remote_state ();
10152 return rs
->cond_tracepoints
;
10156 remote_supports_cond_breakpoints (void)
10158 struct remote_state
*rs
= get_remote_state ();
10160 return rs
->cond_breakpoints
;
10164 remote_supports_fast_tracepoints (void)
10166 struct remote_state
*rs
= get_remote_state ();
10168 return rs
->fast_tracepoints
;
10172 remote_supports_static_tracepoints (void)
10174 struct remote_state
*rs
= get_remote_state ();
10176 return rs
->static_tracepoints
;
10180 remote_supports_install_in_trace (void)
10182 struct remote_state
*rs
= get_remote_state ();
10184 return rs
->install_in_trace
;
10188 remote_supports_enable_disable_tracepoint (void)
10190 struct remote_state
*rs
= get_remote_state ();
10192 return rs
->enable_disable_tracepoints
;
10196 remote_supports_string_tracing (void)
10198 struct remote_state
*rs
= get_remote_state ();
10200 return rs
->string_tracing
;
10204 remote_can_run_breakpoint_commands (void)
10206 struct remote_state
*rs
= get_remote_state ();
10208 return rs
->breakpoint_commands
;
10212 remote_trace_init (void)
10215 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10216 if (strcmp (target_buf
, "OK") != 0)
10217 error (_("Target does not support this command."));
10220 static void free_actions_list (char **actions_list
);
10221 static void free_actions_list_cleanup_wrapper (void *);
10223 free_actions_list_cleanup_wrapper (void *al
)
10225 free_actions_list (al
);
10229 free_actions_list (char **actions_list
)
10233 if (actions_list
== 0)
10236 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10237 xfree (actions_list
[ndx
]);
10239 xfree (actions_list
);
10242 /* Recursive routine to walk through command list including loops, and
10243 download packets for each command. */
10246 remote_download_command_source (int num
, ULONGEST addr
,
10247 struct command_line
*cmds
)
10249 struct remote_state
*rs
= get_remote_state ();
10250 struct command_line
*cmd
;
10252 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10254 QUIT
; /* Allow user to bail out with ^C. */
10255 strcpy (rs
->buf
, "QTDPsrc:");
10256 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10257 rs
->buf
+ strlen (rs
->buf
),
10258 rs
->buf_size
- strlen (rs
->buf
));
10260 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10261 if (strcmp (target_buf
, "OK"))
10262 warning (_("Target does not support source download."));
10264 if (cmd
->control_type
== while_control
10265 || cmd
->control_type
== while_stepping_control
)
10267 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10269 QUIT
; /* Allow user to bail out with ^C. */
10270 strcpy (rs
->buf
, "QTDPsrc:");
10271 encode_source_string (num
, addr
, "cmd", "end",
10272 rs
->buf
+ strlen (rs
->buf
),
10273 rs
->buf_size
- strlen (rs
->buf
));
10275 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10276 if (strcmp (target_buf
, "OK"))
10277 warning (_("Target does not support source download."));
10283 remote_download_tracepoint (struct bp_location
*loc
)
10285 #define BUF_SIZE 2048
10289 char buf
[BUF_SIZE
];
10290 char **tdp_actions
;
10291 char **stepping_actions
;
10293 struct cleanup
*old_chain
= NULL
;
10294 struct agent_expr
*aexpr
;
10295 struct cleanup
*aexpr_chain
= NULL
;
10297 struct breakpoint
*b
= loc
->owner
;
10298 struct tracepoint
*t
= (struct tracepoint
*) b
;
10300 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10301 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10303 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10306 tpaddr
= loc
->address
;
10307 sprintf_vma (addrbuf
, tpaddr
);
10308 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10309 addrbuf
, /* address */
10310 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10311 t
->step_count
, t
->pass_count
);
10312 /* Fast tracepoints are mostly handled by the target, but we can
10313 tell the target how big of an instruction block should be moved
10315 if (b
->type
== bp_fast_tracepoint
)
10317 /* Only test for support at download time; we may not know
10318 target capabilities at definition time. */
10319 if (remote_supports_fast_tracepoints ())
10323 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10324 tpaddr
, &isize
, NULL
))
10325 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10328 /* If it passed validation at definition but fails now,
10329 something is very wrong. */
10330 internal_error (__FILE__
, __LINE__
,
10331 _("Fast tracepoint not "
10332 "valid during download"));
10335 /* Fast tracepoints are functionally identical to regular
10336 tracepoints, so don't take lack of support as a reason to
10337 give up on the trace run. */
10338 warning (_("Target does not support fast tracepoints, "
10339 "downloading %d as regular tracepoint"), b
->number
);
10341 else if (b
->type
== bp_static_tracepoint
)
10343 /* Only test for support at download time; we may not know
10344 target capabilities at definition time. */
10345 if (remote_supports_static_tracepoints ())
10347 struct static_tracepoint_marker marker
;
10349 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10350 strcat (buf
, ":S");
10352 error (_("Static tracepoint not valid during download"));
10355 /* Fast tracepoints are functionally identical to regular
10356 tracepoints, so don't take lack of support as a reason
10357 to give up on the trace run. */
10358 error (_("Target does not support static tracepoints"));
10360 /* If the tracepoint has a conditional, make it into an agent
10361 expression and append to the definition. */
10364 /* Only test support at download time, we may not know target
10365 capabilities at definition time. */
10366 if (remote_supports_cond_tracepoints ())
10368 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10369 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10370 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10372 pkt
= buf
+ strlen (buf
);
10373 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10374 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10376 do_cleanups (aexpr_chain
);
10379 warning (_("Target does not support conditional tracepoints, "
10380 "ignoring tp %d cond"), b
->number
);
10383 if (b
->commands
|| *default_collect
)
10386 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10387 if (strcmp (target_buf
, "OK"))
10388 error (_("Target does not support tracepoints."));
10390 /* do_single_steps (t); */
10393 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10395 QUIT
; /* Allow user to bail out with ^C. */
10396 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10397 b
->number
, addrbuf
, /* address */
10399 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10402 remote_get_noisy_reply (&target_buf
,
10404 if (strcmp (target_buf
, "OK"))
10405 error (_("Error on target while setting tracepoints."));
10408 if (stepping_actions
)
10410 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10412 QUIT
; /* Allow user to bail out with ^C. */
10413 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10414 b
->number
, addrbuf
, /* address */
10415 ((ndx
== 0) ? "S" : ""),
10416 stepping_actions
[ndx
],
10417 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10419 remote_get_noisy_reply (&target_buf
,
10421 if (strcmp (target_buf
, "OK"))
10422 error (_("Error on target while setting tracepoints."));
10426 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10429 if (b
->addr_string
)
10431 strcpy (buf
, "QTDPsrc:");
10432 encode_source_string (b
->number
, loc
->address
,
10433 "at", b
->addr_string
, buf
+ strlen (buf
),
10434 2048 - strlen (buf
));
10437 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10438 if (strcmp (target_buf
, "OK"))
10439 warning (_("Target does not support source download."));
10441 if (b
->cond_string
)
10443 strcpy (buf
, "QTDPsrc:");
10444 encode_source_string (b
->number
, loc
->address
,
10445 "cond", b
->cond_string
, buf
+ strlen (buf
),
10446 2048 - strlen (buf
));
10448 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10449 if (strcmp (target_buf
, "OK"))
10450 warning (_("Target does not support source download."));
10452 remote_download_command_source (b
->number
, loc
->address
,
10453 breakpoint_commands (b
));
10456 do_cleanups (old_chain
);
10460 remote_can_download_tracepoint (void)
10462 struct remote_state
*rs
= get_remote_state ();
10463 struct trace_status
*ts
;
10466 /* Don't try to install tracepoints until we've relocated our
10467 symbols, and fetched and merged the target's tracepoint list with
10469 if (rs
->starting_up
)
10472 ts
= current_trace_status ();
10473 status
= remote_get_trace_status (ts
);
10475 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10478 /* If we are in a tracing experiment, but remote stub doesn't support
10479 installing tracepoint in trace, we have to return. */
10480 if (!remote_supports_install_in_trace ())
10488 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10490 struct remote_state
*rs
= get_remote_state ();
10493 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10494 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10496 p
= rs
->buf
+ strlen (rs
->buf
);
10497 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10498 error (_("Trace state variable name too long for tsv definition packet"));
10499 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10502 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10503 if (*target_buf
== '\0')
10504 error (_("Target does not support this command."));
10505 if (strcmp (target_buf
, "OK") != 0)
10506 error (_("Error on target while downloading trace state variable."));
10510 remote_enable_tracepoint (struct bp_location
*location
)
10512 struct remote_state
*rs
= get_remote_state ();
10515 sprintf_vma (addr_buf
, location
->address
);
10516 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10517 location
->owner
->number
, addr_buf
);
10519 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10520 if (*rs
->buf
== '\0')
10521 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10522 if (strcmp (rs
->buf
, "OK") != 0)
10523 error (_("Error on target while enabling tracepoint."));
10527 remote_disable_tracepoint (struct bp_location
*location
)
10529 struct remote_state
*rs
= get_remote_state ();
10532 sprintf_vma (addr_buf
, location
->address
);
10533 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10534 location
->owner
->number
, addr_buf
);
10536 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10537 if (*rs
->buf
== '\0')
10538 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10539 if (strcmp (rs
->buf
, "OK") != 0)
10540 error (_("Error on target while disabling tracepoint."));
10544 remote_trace_set_readonly_regions (void)
10548 bfd_size_type size
;
10554 return; /* No information to give. */
10556 strcpy (target_buf
, "QTro");
10557 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10559 char tmp1
[40], tmp2
[40];
10562 if ((s
->flags
& SEC_LOAD
) == 0 ||
10563 /* (s->flags & SEC_CODE) == 0 || */
10564 (s
->flags
& SEC_READONLY
) == 0)
10568 vma
= bfd_get_section_vma (abfd
, s
);
10569 size
= bfd_get_section_size (s
);
10570 sprintf_vma (tmp1
, vma
);
10571 sprintf_vma (tmp2
, vma
+ size
);
10572 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10573 if (offset
+ sec_length
+ 1 > target_buf_size
)
10575 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10578 Too many sections for read-only sections definition packet."));
10581 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10583 offset
+= sec_length
;
10587 putpkt (target_buf
);
10588 getpkt (&target_buf
, &target_buf_size
, 0);
10593 remote_trace_start (void)
10595 putpkt ("QTStart");
10596 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10597 if (*target_buf
== '\0')
10598 error (_("Target does not support this command."));
10599 if (strcmp (target_buf
, "OK") != 0)
10600 error (_("Bogus reply from target: %s"), target_buf
);
10604 remote_get_trace_status (struct trace_status
*ts
)
10606 /* Initialize it just to avoid a GCC false warning. */
10608 /* FIXME we need to get register block size some other way. */
10609 extern int trace_regblock_size
;
10610 volatile struct gdb_exception ex
;
10612 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10614 putpkt ("qTStatus");
10616 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10618 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10622 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10626 /* If the remote target doesn't do tracing, flag it. */
10630 /* We're working with a live target. */
10634 error (_("Bogus trace status reply from target: %s"), target_buf
);
10636 /* Function 'parse_trace_status' sets default value of each field of
10637 'ts' at first, so we don't have to do it here. */
10638 parse_trace_status (p
, ts
);
10640 return ts
->running
;
10644 remote_get_tracepoint_status (struct breakpoint
*bp
,
10645 struct uploaded_tp
*utp
)
10647 struct remote_state
*rs
= get_remote_state ();
10649 struct bp_location
*loc
;
10650 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10651 size_t size
= get_remote_packet_size ();
10655 tp
->base
.hit_count
= 0;
10656 tp
->traceframe_usage
= 0;
10657 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10659 /* If the tracepoint was never downloaded, don't go asking for
10661 if (tp
->number_on_target
== 0)
10663 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10664 phex_nz (loc
->address
, 0));
10666 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10667 if (reply
&& *reply
)
10670 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10676 utp
->hit_count
= 0;
10677 utp
->traceframe_usage
= 0;
10678 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10679 phex_nz (utp
->addr
, 0));
10681 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10682 if (reply
&& *reply
)
10685 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10691 remote_trace_stop (void)
10694 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10695 if (*target_buf
== '\0')
10696 error (_("Target does not support this command."));
10697 if (strcmp (target_buf
, "OK") != 0)
10698 error (_("Bogus reply from target: %s"), target_buf
);
10702 remote_trace_find (enum trace_find_type type
, int num
,
10703 ULONGEST addr1
, ULONGEST addr2
,
10706 struct remote_state
*rs
= get_remote_state ();
10707 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10709 int target_frameno
= -1, target_tracept
= -1;
10711 /* Lookups other than by absolute frame number depend on the current
10712 trace selected, so make sure it is correct on the remote end
10714 if (type
!= tfind_number
)
10715 set_remote_traceframe ();
10718 strcpy (p
, "QTFrame:");
10719 p
= strchr (p
, '\0');
10723 xsnprintf (p
, endbuf
- p
, "%x", num
);
10726 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10729 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10732 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10733 phex_nz (addr2
, 0));
10735 case tfind_outside
:
10736 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10737 phex_nz (addr2
, 0));
10740 error (_("Unknown trace find type %d"), type
);
10744 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10745 if (*reply
== '\0')
10746 error (_("Target does not support this command."));
10748 while (reply
&& *reply
)
10753 target_frameno
= (int) strtol (p
, &reply
, 16);
10755 error (_("Unable to parse trace frame number"));
10756 /* Don't update our remote traceframe number cache on failure
10757 to select a remote traceframe. */
10758 if (target_frameno
== -1)
10763 target_tracept
= (int) strtol (p
, &reply
, 16);
10765 error (_("Unable to parse tracepoint number"));
10767 case 'O': /* "OK"? */
10768 if (reply
[1] == 'K' && reply
[2] == '\0')
10771 error (_("Bogus reply from target: %s"), reply
);
10774 error (_("Bogus reply from target: %s"), reply
);
10777 *tpp
= target_tracept
;
10779 remote_traceframe_number
= target_frameno
;
10780 return target_frameno
;
10784 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10786 struct remote_state
*rs
= get_remote_state ();
10790 set_remote_traceframe ();
10792 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10794 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10795 if (reply
&& *reply
)
10799 unpack_varlen_hex (reply
+ 1, &uval
);
10800 *val
= (LONGEST
) uval
;
10808 remote_save_trace_data (const char *filename
)
10810 struct remote_state
*rs
= get_remote_state ();
10814 strcpy (p
, "QTSave:");
10816 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10817 error (_("Remote file name too long for trace save packet"));
10818 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10821 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10822 if (*reply
== '\0')
10823 error (_("Target does not support this command."));
10824 if (strcmp (reply
, "OK") != 0)
10825 error (_("Bogus reply from target: %s"), reply
);
10829 /* This is basically a memory transfer, but needs to be its own packet
10830 because we don't know how the target actually organizes its trace
10831 memory, plus we want to be able to ask for as much as possible, but
10832 not be unhappy if we don't get as much as we ask for. */
10835 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10837 struct remote_state
*rs
= get_remote_state ();
10843 strcpy (p
, "qTBuffer:");
10845 p
+= hexnumstr (p
, offset
);
10847 p
+= hexnumstr (p
, len
);
10851 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10852 if (reply
&& *reply
)
10854 /* 'l' by itself means we're at the end of the buffer and
10855 there is nothing more to get. */
10859 /* Convert the reply into binary. Limit the number of bytes to
10860 convert according to our passed-in buffer size, rather than
10861 what was returned in the packet; if the target is
10862 unexpectedly generous and gives us a bigger reply than we
10863 asked for, we don't want to crash. */
10864 rslt
= hex2bin (target_buf
, buf
, len
);
10868 /* Something went wrong, flag as an error. */
10873 remote_set_disconnected_tracing (int val
)
10875 struct remote_state
*rs
= get_remote_state ();
10877 if (rs
->disconnected_tracing
)
10881 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10883 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10884 if (*reply
== '\0')
10885 error (_("Target does not support this command."));
10886 if (strcmp (reply
, "OK") != 0)
10887 error (_("Bogus reply from target: %s"), reply
);
10890 warning (_("Target does not support disconnected tracing."));
10894 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10896 struct thread_info
*info
= find_thread_ptid (ptid
);
10898 if (info
&& info
->private)
10899 return info
->private->core
;
10904 remote_set_circular_trace_buffer (int val
)
10906 struct remote_state
*rs
= get_remote_state ();
10909 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
10911 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10912 if (*reply
== '\0')
10913 error (_("Target does not support this command."));
10914 if (strcmp (reply
, "OK") != 0)
10915 error (_("Bogus reply from target: %s"), reply
);
10918 static struct traceframe_info
*
10919 remote_traceframe_info (void)
10923 text
= target_read_stralloc (¤t_target
,
10924 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10927 struct traceframe_info
*info
;
10928 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10930 info
= parse_traceframe_info (text
);
10931 do_cleanups (back_to
);
10938 /* Handle the qTMinFTPILen packet. Returns the minimum length of
10939 instruction on which a fast tracepoint may be placed. Returns -1
10940 if the packet is not supported, and 0 if the minimum instruction
10941 length is unknown. */
10944 remote_get_min_fast_tracepoint_insn_len (void)
10946 struct remote_state
*rs
= get_remote_state ();
10949 /* If we're not debugging a process yet, the IPA can't be
10951 if (!target_has_execution
)
10954 /* Make sure the remote is pointing at the right process. */
10955 set_general_process ();
10957 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
10959 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10960 if (*reply
== '\0')
10964 ULONGEST min_insn_len
;
10966 unpack_varlen_hex (reply
, &min_insn_len
);
10968 return (int) min_insn_len
;
10973 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
10975 struct remote_state
*rs
= get_remote_state ();
10977 char *buf
= rs
->buf
;
10978 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10981 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
10984 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
10985 nbytes
= bin2hex (user
, buf
, 0);
10991 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
10992 nbytes
= bin2hex (notes
, buf
, 0);
10998 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
10999 nbytes
= bin2hex (stop_notes
, buf
, 0);
11003 /* Ensure the buffer is terminated. */
11007 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11008 if (*reply
== '\0')
11011 if (strcmp (reply
, "OK") != 0)
11012 error (_("Bogus reply from target: %s"), reply
);
11018 remote_use_agent (int use
)
11020 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11022 struct remote_state
*rs
= get_remote_state ();
11024 /* If the stub supports QAgent. */
11025 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11027 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11029 if (strcmp (rs
->buf
, "OK") == 0)
11040 remote_can_use_agent (void)
11042 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11046 init_remote_ops (void)
11048 remote_ops
.to_shortname
= "remote";
11049 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11050 remote_ops
.to_doc
=
11051 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11052 Specify the serial device it is connected to\n\
11053 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11054 remote_ops
.to_open
= remote_open
;
11055 remote_ops
.to_close
= remote_close
;
11056 remote_ops
.to_detach
= remote_detach
;
11057 remote_ops
.to_disconnect
= remote_disconnect
;
11058 remote_ops
.to_resume
= remote_resume
;
11059 remote_ops
.to_wait
= remote_wait
;
11060 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11061 remote_ops
.to_store_registers
= remote_store_registers
;
11062 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11063 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11064 remote_ops
.to_files_info
= remote_files_info
;
11065 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11066 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11067 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11068 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11069 remote_ops
.to_watchpoint_addr_within_range
=
11070 remote_watchpoint_addr_within_range
;
11071 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11072 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11073 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11074 remote_ops
.to_region_ok_for_hw_watchpoint
11075 = remote_region_ok_for_hw_watchpoint
;
11076 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11077 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11078 remote_ops
.to_kill
= remote_kill
;
11079 remote_ops
.to_load
= generic_load
;
11080 remote_ops
.to_mourn_inferior
= remote_mourn
;
11081 remote_ops
.to_pass_signals
= remote_pass_signals
;
11082 remote_ops
.to_program_signals
= remote_program_signals
;
11083 remote_ops
.to_thread_alive
= remote_thread_alive
;
11084 remote_ops
.to_find_new_threads
= remote_threads_info
;
11085 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11086 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11087 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11088 remote_ops
.to_stop
= remote_stop
;
11089 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11090 remote_ops
.to_rcmd
= remote_rcmd
;
11091 remote_ops
.to_log_command
= serial_log_command
;
11092 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11093 remote_ops
.to_stratum
= process_stratum
;
11094 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11095 remote_ops
.to_has_memory
= default_child_has_memory
;
11096 remote_ops
.to_has_stack
= default_child_has_stack
;
11097 remote_ops
.to_has_registers
= default_child_has_registers
;
11098 remote_ops
.to_has_execution
= default_child_has_execution
;
11099 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11100 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11101 remote_ops
.to_magic
= OPS_MAGIC
;
11102 remote_ops
.to_memory_map
= remote_memory_map
;
11103 remote_ops
.to_flash_erase
= remote_flash_erase
;
11104 remote_ops
.to_flash_done
= remote_flash_done
;
11105 remote_ops
.to_read_description
= remote_read_description
;
11106 remote_ops
.to_search_memory
= remote_search_memory
;
11107 remote_ops
.to_can_async_p
= remote_can_async_p
;
11108 remote_ops
.to_is_async_p
= remote_is_async_p
;
11109 remote_ops
.to_async
= remote_async
;
11110 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11111 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11112 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11113 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11114 remote_ops
.to_supports_disable_randomization
11115 = remote_supports_disable_randomization
;
11116 remote_ops
.to_fileio_open
= remote_hostio_open
;
11117 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11118 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11119 remote_ops
.to_fileio_close
= remote_hostio_close
;
11120 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11121 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11122 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11123 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11124 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11125 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11126 remote_ops
.to_trace_init
= remote_trace_init
;
11127 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11128 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11129 remote_ops
.to_download_trace_state_variable
11130 = remote_download_trace_state_variable
;
11131 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11132 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11133 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11134 remote_ops
.to_trace_start
= remote_trace_start
;
11135 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11136 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11137 remote_ops
.to_trace_stop
= remote_trace_stop
;
11138 remote_ops
.to_trace_find
= remote_trace_find
;
11139 remote_ops
.to_get_trace_state_variable_value
11140 = remote_get_trace_state_variable_value
;
11141 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11142 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11143 remote_ops
.to_upload_trace_state_variables
11144 = remote_upload_trace_state_variables
;
11145 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11146 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11147 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11148 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11149 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11150 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11151 remote_ops
.to_verify_memory
= remote_verify_memory
;
11152 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11153 remote_ops
.to_set_permissions
= remote_set_permissions
;
11154 remote_ops
.to_static_tracepoint_marker_at
11155 = remote_static_tracepoint_marker_at
;
11156 remote_ops
.to_static_tracepoint_markers_by_strid
11157 = remote_static_tracepoint_markers_by_strid
;
11158 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11159 remote_ops
.to_use_agent
= remote_use_agent
;
11160 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11163 /* Set up the extended remote vector by making a copy of the standard
11164 remote vector and adding to it. */
11167 init_extended_remote_ops (void)
11169 extended_remote_ops
= remote_ops
;
11171 extended_remote_ops
.to_shortname
= "extended-remote";
11172 extended_remote_ops
.to_longname
=
11173 "Extended remote serial target in gdb-specific protocol";
11174 extended_remote_ops
.to_doc
=
11175 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11176 Specify the serial device it is connected to (e.g. /dev/ttya).";
11177 extended_remote_ops
.to_open
= extended_remote_open
;
11178 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11179 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11180 extended_remote_ops
.to_detach
= extended_remote_detach
;
11181 extended_remote_ops
.to_attach
= extended_remote_attach
;
11182 extended_remote_ops
.to_kill
= extended_remote_kill
;
11183 extended_remote_ops
.to_supports_disable_randomization
11184 = extended_remote_supports_disable_randomization
;
11188 remote_can_async_p (void)
11190 if (!target_async_permitted
)
11191 /* We only enable async when the user specifically asks for it. */
11194 /* We're async whenever the serial device is. */
11195 return serial_can_async_p (remote_desc
);
11199 remote_is_async_p (void)
11201 if (!target_async_permitted
)
11202 /* We only enable async when the user specifically asks for it. */
11205 /* We're async whenever the serial device is. */
11206 return serial_is_async_p (remote_desc
);
11209 /* Pass the SERIAL event on and up to the client. One day this code
11210 will be able to delay notifying the client of an event until the
11211 point where an entire packet has been received. */
11213 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11215 static void *async_client_context
;
11216 static serial_event_ftype remote_async_serial_handler
;
11219 remote_async_serial_handler (struct serial
*scb
, void *context
)
11221 /* Don't propogate error information up to the client. Instead let
11222 the client find out about the error by querying the target. */
11223 async_client_callback (INF_REG_EVENT
, async_client_context
);
11227 remote_async_inferior_event_handler (gdb_client_data data
)
11229 inferior_event_handler (INF_REG_EVENT
, NULL
);
11233 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11234 void *context
), void *context
)
11236 if (callback
!= NULL
)
11238 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11239 async_client_callback
= callback
;
11240 async_client_context
= context
;
11243 serial_async (remote_desc
, NULL
, NULL
);
11247 set_remote_cmd (char *args
, int from_tty
)
11249 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11253 show_remote_cmd (char *args
, int from_tty
)
11255 /* We can't just use cmd_show_list here, because we want to skip
11256 the redundant "show remote Z-packet" and the legacy aliases. */
11257 struct cleanup
*showlist_chain
;
11258 struct cmd_list_element
*list
= remote_show_cmdlist
;
11259 struct ui_out
*uiout
= current_uiout
;
11261 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11262 for (; list
!= NULL
; list
= list
->next
)
11263 if (strcmp (list
->name
, "Z-packet") == 0)
11265 else if (list
->type
== not_set_cmd
)
11266 /* Alias commands are exactly like the original, except they
11267 don't have the normal type. */
11271 struct cleanup
*option_chain
11272 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11274 ui_out_field_string (uiout
, "name", list
->name
);
11275 ui_out_text (uiout
, ": ");
11276 if (list
->type
== show_cmd
)
11277 do_show_command ((char *) NULL
, from_tty
, list
);
11279 cmd_func (list
, NULL
, from_tty
);
11280 /* Close the tuple. */
11281 do_cleanups (option_chain
);
11284 /* Close the tuple. */
11285 do_cleanups (showlist_chain
);
11289 /* Function to be called whenever a new objfile (shlib) is detected. */
11291 remote_new_objfile (struct objfile
*objfile
)
11293 if (remote_desc
!= 0) /* Have a remote connection. */
11294 remote_check_symbols (objfile
);
11297 /* Pull all the tracepoints defined on the target and create local
11298 data structures representing them. We don't want to create real
11299 tracepoints yet, we don't want to mess up the user's existing
11303 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11305 struct remote_state
*rs
= get_remote_state ();
11308 /* Ask for a first packet of tracepoint definition. */
11310 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11312 while (*p
&& *p
!= 'l')
11314 parse_tracepoint_definition (p
, utpp
);
11315 /* Ask for another packet of tracepoint definition. */
11317 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11324 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11326 struct remote_state
*rs
= get_remote_state ();
11329 /* Ask for a first packet of variable definition. */
11331 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11333 while (*p
&& *p
!= 'l')
11335 parse_tsv_definition (p
, utsvp
);
11336 /* Ask for another packet of variable definition. */
11338 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11345 _initialize_remote (void)
11347 struct remote_state
*rs
;
11348 struct cmd_list_element
*cmd
;
11351 /* architecture specific data */
11352 remote_gdbarch_data_handle
=
11353 gdbarch_data_register_post_init (init_remote_state
);
11354 remote_g_packet_data_handle
=
11355 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11357 /* Initialize the per-target state. At the moment there is only one
11358 of these, not one per target. Only one target is active at a
11359 time. The default buffer size is unimportant; it will be expanded
11360 whenever a larger buffer is needed. */
11361 rs
= get_remote_state_raw ();
11362 rs
->buf_size
= 400;
11363 rs
->buf
= xmalloc (rs
->buf_size
);
11365 init_remote_ops ();
11366 add_target (&remote_ops
);
11368 init_extended_remote_ops ();
11369 add_target (&extended_remote_ops
);
11371 /* Hook into new objfile notification. */
11372 observer_attach_new_objfile (remote_new_objfile
);
11373 /* We're no longer interested in notification events of an inferior
11375 observer_attach_inferior_exit (discard_pending_stop_replies
);
11377 /* Set up signal handlers. */
11378 sigint_remote_token
=
11379 create_async_signal_handler (async_remote_interrupt
, NULL
);
11380 sigint_remote_twice_token
=
11381 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11384 init_remote_threadtests ();
11387 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11388 /* set/show remote ... */
11390 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11391 Remote protocol specific variables\n\
11392 Configure various remote-protocol specific variables such as\n\
11393 the packets being used"),
11394 &remote_set_cmdlist
, "set remote ",
11395 0 /* allow-unknown */, &setlist
);
11396 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11397 Remote protocol specific variables\n\
11398 Configure various remote-protocol specific variables such as\n\
11399 the packets being used"),
11400 &remote_show_cmdlist
, "show remote ",
11401 0 /* allow-unknown */, &showlist
);
11403 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11404 Compare section data on target to the exec file.\n\
11405 Argument is a single section name (default: all loaded sections)."),
11408 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11409 Send an arbitrary packet to a remote target.\n\
11410 maintenance packet TEXT\n\
11411 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11412 this command sends the string TEXT to the inferior, and displays the\n\
11413 response packet. GDB supplies the initial `$' character, and the\n\
11414 terminating `#' character and checksum."),
11417 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11418 Set whether to send break if interrupted."), _("\
11419 Show whether to send break if interrupted."), _("\
11420 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11421 set_remotebreak
, show_remotebreak
,
11422 &setlist
, &showlist
);
11423 cmd_name
= "remotebreak";
11424 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11425 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11426 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11427 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11428 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11430 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11431 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11433 Set interrupt sequence to remote target."), _("\
11434 Show interrupt sequence to remote target."), _("\
11435 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11436 NULL
, show_interrupt_sequence
,
11437 &remote_set_cmdlist
,
11438 &remote_show_cmdlist
);
11440 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11441 &interrupt_on_connect
, _("\
11442 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11443 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11444 If set, interrupt sequence is sent to remote target."),
11446 &remote_set_cmdlist
, &remote_show_cmdlist
);
11448 /* Install commands for configuring memory read/write packets. */
11450 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11451 Set the maximum number of bytes per memory write packet (deprecated)."),
11453 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11454 Show the maximum number of bytes per memory write packet (deprecated)."),
11456 add_cmd ("memory-write-packet-size", no_class
,
11457 set_memory_write_packet_size
, _("\
11458 Set the maximum number of bytes per memory-write packet.\n\
11459 Specify the number of bytes in a packet or 0 (zero) for the\n\
11460 default packet size. The actual limit is further reduced\n\
11461 dependent on the target. Specify ``fixed'' to disable the\n\
11462 further restriction and ``limit'' to enable that restriction."),
11463 &remote_set_cmdlist
);
11464 add_cmd ("memory-read-packet-size", no_class
,
11465 set_memory_read_packet_size
, _("\
11466 Set the maximum number of bytes per memory-read packet.\n\
11467 Specify the number of bytes in a packet or 0 (zero) for the\n\
11468 default packet size. The actual limit is further reduced\n\
11469 dependent on the target. Specify ``fixed'' to disable the\n\
11470 further restriction and ``limit'' to enable that restriction."),
11471 &remote_set_cmdlist
);
11472 add_cmd ("memory-write-packet-size", no_class
,
11473 show_memory_write_packet_size
,
11474 _("Show the maximum number of bytes per memory-write packet."),
11475 &remote_show_cmdlist
);
11476 add_cmd ("memory-read-packet-size", no_class
,
11477 show_memory_read_packet_size
,
11478 _("Show the maximum number of bytes per memory-read packet."),
11479 &remote_show_cmdlist
);
11481 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11482 &remote_hw_watchpoint_limit
, _("\
11483 Set the maximum number of target hardware watchpoints."), _("\
11484 Show the maximum number of target hardware watchpoints."), _("\
11485 Specify a negative limit for unlimited."),
11486 NULL
, NULL
, /* FIXME: i18n: The maximum
11487 number of target hardware
11488 watchpoints is %s. */
11489 &remote_set_cmdlist
, &remote_show_cmdlist
);
11490 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11491 &remote_hw_watchpoint_length_limit
, _("\
11492 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11493 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11494 Specify a negative limit for unlimited."),
11495 NULL
, NULL
, /* FIXME: i18n: The maximum
11496 length (in bytes) of a target
11497 hardware watchpoint is %s. */
11498 &remote_set_cmdlist
, &remote_show_cmdlist
);
11499 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11500 &remote_hw_breakpoint_limit
, _("\
11501 Set the maximum number of target hardware breakpoints."), _("\
11502 Show the maximum number of target hardware breakpoints."), _("\
11503 Specify a negative limit for unlimited."),
11504 NULL
, NULL
, /* FIXME: i18n: The maximum
11505 number of target hardware
11506 breakpoints is %s. */
11507 &remote_set_cmdlist
, &remote_show_cmdlist
);
11509 add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure
,
11510 &remote_address_size
, _("\
11511 Set the maximum size of the address (in bits) in a memory packet."), _("\
11512 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11514 NULL
, /* FIXME: i18n: */
11515 &setlist
, &showlist
);
11517 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11518 "X", "binary-download", 1);
11520 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11521 "vCont", "verbose-resume", 0);
11523 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11524 "QPassSignals", "pass-signals", 0);
11526 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11527 "QProgramSignals", "program-signals", 0);
11529 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11530 "qSymbol", "symbol-lookup", 0);
11532 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11533 "P", "set-register", 1);
11535 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11536 "p", "fetch-register", 1);
11538 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11539 "Z0", "software-breakpoint", 0);
11541 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11542 "Z1", "hardware-breakpoint", 0);
11544 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11545 "Z2", "write-watchpoint", 0);
11547 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11548 "Z3", "read-watchpoint", 0);
11550 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11551 "Z4", "access-watchpoint", 0);
11553 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11554 "qXfer:auxv:read", "read-aux-vector", 0);
11556 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11557 "qXfer:features:read", "target-features", 0);
11559 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11560 "qXfer:libraries:read", "library-info", 0);
11562 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11563 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11565 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11566 "qXfer:memory-map:read", "memory-map", 0);
11568 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11569 "qXfer:spu:read", "read-spu-object", 0);
11571 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11572 "qXfer:spu:write", "write-spu-object", 0);
11574 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11575 "qXfer:osdata:read", "osdata", 0);
11577 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11578 "qXfer:threads:read", "threads", 0);
11580 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11581 "qXfer:siginfo:read", "read-siginfo-object", 0);
11583 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11584 "qXfer:siginfo:write", "write-siginfo-object", 0);
11586 add_packet_config_cmd
11587 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11588 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11590 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11591 "qXfer:uib:read", "unwind-info-block", 0);
11593 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11594 "qGetTLSAddr", "get-thread-local-storage-address",
11597 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11598 "qGetTIBAddr", "get-thread-information-block-address",
11601 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11602 "bc", "reverse-continue", 0);
11604 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11605 "bs", "reverse-step", 0);
11607 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11608 "qSupported", "supported-packets", 0);
11610 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11611 "qSearch:memory", "search-memory", 0);
11613 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11614 "vFile:open", "hostio-open", 0);
11616 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11617 "vFile:pread", "hostio-pread", 0);
11619 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11620 "vFile:pwrite", "hostio-pwrite", 0);
11622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11623 "vFile:close", "hostio-close", 0);
11625 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11626 "vFile:unlink", "hostio-unlink", 0);
11628 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11629 "vFile:readlink", "hostio-readlink", 0);
11631 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11632 "vAttach", "attach", 0);
11634 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11637 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11638 "QStartNoAckMode", "noack", 0);
11640 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11641 "vKill", "kill", 0);
11643 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11644 "qAttached", "query-attached", 0);
11646 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11647 "ConditionalTracepoints",
11648 "conditional-tracepoints", 0);
11650 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11651 "ConditionalBreakpoints",
11652 "conditional-breakpoints", 0);
11654 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11655 "BreakpointCommands",
11656 "breakpoint-commands", 0);
11658 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11659 "FastTracepoints", "fast-tracepoints", 0);
11661 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11662 "TracepointSource", "TracepointSource", 0);
11664 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11665 "QAllow", "allow", 0);
11667 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11668 "StaticTracepoints", "static-tracepoints", 0);
11670 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11671 "InstallInTrace", "install-in-trace", 0);
11673 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11674 "qXfer:statictrace:read", "read-sdata-object", 0);
11676 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11677 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11679 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11680 "QDisableRandomization", "disable-randomization", 0);
11682 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11683 "QAgent", "agent", 0);
11685 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11686 Z sub-packet has its own set and show commands, but users may
11687 have sets to this variable in their .gdbinit files (or in their
11689 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11690 &remote_Z_packet_detect
, _("\
11691 Set use of remote protocol `Z' packets"), _("\
11692 Show use of remote protocol `Z' packets "), _("\
11693 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11695 set_remote_protocol_Z_packet_cmd
,
11696 show_remote_protocol_Z_packet_cmd
,
11697 /* FIXME: i18n: Use of remote protocol
11698 `Z' packets is %s. */
11699 &remote_set_cmdlist
, &remote_show_cmdlist
);
11701 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11702 Manipulate files on the remote system\n\
11703 Transfer files to and from the remote target system."),
11704 &remote_cmdlist
, "remote ",
11705 0 /* allow-unknown */, &cmdlist
);
11707 add_cmd ("put", class_files
, remote_put_command
,
11708 _("Copy a local file to the remote system."),
11711 add_cmd ("get", class_files
, remote_get_command
,
11712 _("Copy a remote file to the local system."),
11715 add_cmd ("delete", class_files
, remote_delete_command
,
11716 _("Delete a remote file."),
11719 remote_exec_file
= xstrdup ("");
11720 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11721 &remote_exec_file
, _("\
11722 Set the remote pathname for \"run\""), _("\
11723 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11724 &remote_set_cmdlist
, &remote_show_cmdlist
);
11726 /* Eventually initialize fileio. See fileio.c */
11727 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11729 /* Take advantage of the fact that the LWP field is not used, to tag
11730 special ptids with it set to != 0. */
11731 magic_null_ptid
= ptid_build (42000, 1, -1);
11732 not_sent_ptid
= ptid_build (42000, 1, -2);
11733 any_thread_ptid
= ptid_build (42000, 1, 0);
11735 target_buf_size
= 2048;
11736 target_buf
= xmalloc (target_buf_size
);