1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 2010 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
31 #include "exceptions.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "xml-support.h"
65 #include "memory-map.h"
67 #include "tracepoint.h"
71 /* temp hacks for tracepoint encoding migration */
72 static char *target_buf
;
73 static long target_buf_size
;
75 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
76 char ***tdp_actions
, char ***stepping_actions
);
78 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void cleanup_sigint_signal_handler (void *dummy
);
92 static void initialize_sigint_signal_handler (void);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
97 static void handle_remote_sigint (int);
98 static void handle_remote_sigint_twice (int);
99 static void async_remote_interrupt (gdb_client_data
);
100 void async_remote_interrupt_twice (gdb_client_data
);
102 static void remote_files_info (struct target_ops
*ignore
);
104 static void remote_prepare_to_store (struct regcache
*regcache
);
106 static void remote_open (char *name
, int from_tty
);
108 static void extended_remote_open (char *name
, int from_tty
);
110 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
112 static void remote_close (int quitting
);
114 static void remote_mourn (struct target_ops
*ops
);
116 static void extended_remote_restart (void);
118 static void extended_remote_mourn (struct target_ops
*);
120 static void remote_mourn_1 (struct target_ops
*);
122 static void remote_send (char **buf
, long *sizeof_buf_p
);
124 static int readchar (int timeout
);
126 static void remote_kill (struct target_ops
*ops
);
128 static int tohex (int nib
);
130 static int remote_can_async_p (void);
132 static int remote_is_async_p (void);
134 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
135 void *context
), void *context
);
137 static int remote_async_mask (int new_mask
);
139 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
141 static void remote_interrupt (int signo
);
143 static void remote_interrupt_twice (int signo
);
145 static void interrupt_query (void);
147 static void set_general_thread (struct ptid ptid
);
148 static void set_continue_thread (struct ptid ptid
);
150 static void get_offsets (void);
152 static void skip_frame (void);
154 static long read_frame (char **buf_p
, long *sizeof_buf
);
156 static int hexnumlen (ULONGEST num
);
158 static void init_remote_ops (void);
160 static void init_extended_remote_ops (void);
162 static void remote_stop (ptid_t
);
164 static int ishex (int ch
, int *val
);
166 static int stubhex (int ch
);
168 static int hexnumstr (char *, ULONGEST
);
170 static int hexnumnstr (char *, ULONGEST
, int);
172 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
174 static void print_packet (char *);
176 static void compare_sections_command (char *, int);
178 static void packet_command (char *, int);
180 static int stub_unpack_int (char *buff
, int fieldlength
);
182 static ptid_t
remote_current_thread (ptid_t oldptid
);
184 static void remote_find_new_threads (void);
186 static void record_currthread (ptid_t currthread
);
188 static int fromhex (int a
);
190 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
192 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
194 static int putpkt_binary (char *buf
, int cnt
);
196 static void check_binary_download (CORE_ADDR addr
);
198 struct packet_config
;
200 static void show_packet_config_cmd (struct packet_config
*config
);
202 static void update_packet_config (struct packet_config
*config
);
204 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
205 struct cmd_list_element
*c
);
207 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
209 struct cmd_list_element
*c
,
212 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
213 static ptid_t
read_ptid (char *buf
, char **obuf
);
216 static int remote_get_trace_status (struct trace_status
*ts
);
218 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
220 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
222 static void remote_query_supported (void);
224 static void remote_check_symbols (struct objfile
*objfile
);
226 void _initialize_remote (void);
229 static struct stop_reply
*stop_reply_xmalloc (void);
230 static void stop_reply_xfree (struct stop_reply
*);
231 static void do_stop_reply_xfree (void *arg
);
232 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
233 static void push_stop_reply (struct stop_reply
*);
234 static void remote_get_pending_stop_replies (void);
235 static void discard_pending_stop_replies (int pid
);
236 static int peek_stop_reply (ptid_t ptid
);
238 static void remote_async_inferior_event_handler (gdb_client_data
);
239 static void remote_async_get_pending_events_handler (gdb_client_data
);
241 static void remote_terminal_ours (void);
243 static int remote_read_description_p (struct target_ops
*target
);
245 /* The non-stop remote protocol provisions for one pending stop reply.
246 This is where we keep it until it is acknowledged. */
248 static struct stop_reply
*pending_stop_reply
= NULL
;
252 static struct cmd_list_element
*remote_cmdlist
;
254 /* For "set remote" and "show remote". */
256 static struct cmd_list_element
*remote_set_cmdlist
;
257 static struct cmd_list_element
*remote_show_cmdlist
;
259 /* Description of the remote protocol state for the currently
260 connected target. This is per-target state, and independent of the
261 selected architecture. */
265 /* A buffer to use for incoming packets, and its current size. The
266 buffer is grown dynamically for larger incoming packets.
267 Outgoing packets may also be constructed in this buffer.
268 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
269 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
274 /* If we negotiated packet size explicitly (and thus can bypass
275 heuristics for the largest packet size that will not overflow
276 a buffer in the stub), this will be set to that packet size.
277 Otherwise zero, meaning to use the guessed size. */
278 long explicit_packet_size
;
280 /* remote_wait is normally called when the target is running and
281 waits for a stop reply packet. But sometimes we need to call it
282 when the target is already stopped. We can send a "?" packet
283 and have remote_wait read the response. Or, if we already have
284 the response, we can stash it in BUF and tell remote_wait to
285 skip calling getpkt. This flag is set when BUF contains a
286 stop reply packet and the target is not waiting. */
287 int cached_wait_status
;
289 /* True, if in no ack mode. That is, neither GDB nor the stub will
290 expect acks from each other. The connection is assumed to be
294 /* True if we're connected in extended remote mode. */
297 /* True if the stub reported support for multi-process
299 int multi_process_aware
;
301 /* True if we resumed the target and we're waiting for the target to
302 stop. In the mean time, we can't start another command/query.
303 The remote server wouldn't be ready to process it, so we'd
304 timeout waiting for a reply that would never come and eventually
305 we'd close the connection. This can happen in asynchronous mode
306 because we allow GDB commands while the target is running. */
307 int waiting_for_stop_reply
;
309 /* True if the stub reports support for non-stop mode. */
312 /* True if the stub reports support for vCont;t. */
315 /* True if the stub reports support for conditional tracepoints. */
316 int cond_tracepoints
;
318 /* True if the stub reports support for fast tracepoints. */
319 int fast_tracepoints
;
321 /* True if the stub can continue running a trace while GDB is
323 int disconnected_tracing
;
325 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
326 responded to that. */
330 /* Private data that we'll store in (struct thread_info)->private. */
331 struct private_thread_info
338 free_private_thread_info (struct private_thread_info
*info
)
344 /* Returns true if the multi-process extensions are in effect. */
346 remote_multi_process_p (struct remote_state
*rs
)
348 return rs
->extended
&& rs
->multi_process_aware
;
351 /* This data could be associated with a target, but we do not always
352 have access to the current target when we need it, so for now it is
353 static. This will be fine for as long as only one target is in use
355 static struct remote_state remote_state
;
357 static struct remote_state
*
358 get_remote_state_raw (void)
360 return &remote_state
;
363 /* Description of the remote protocol for a given architecture. */
367 long offset
; /* Offset into G packet. */
368 long regnum
; /* GDB's internal register number. */
369 LONGEST pnum
; /* Remote protocol register number. */
370 int in_g_packet
; /* Always part of G packet. */
371 /* long size in bytes; == register_size (target_gdbarch, regnum);
373 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
377 struct remote_arch_state
379 /* Description of the remote protocol registers. */
380 long sizeof_g_packet
;
382 /* Description of the remote protocol registers indexed by REGNUM
383 (making an array gdbarch_num_regs in size). */
384 struct packet_reg
*regs
;
386 /* This is the size (in chars) of the first response to the ``g''
387 packet. It is used as a heuristic when determining the maximum
388 size of memory-read and memory-write packets. A target will
389 typically only reserve a buffer large enough to hold the ``g''
390 packet. The size does not include packet overhead (headers and
392 long actual_register_packet_size
;
394 /* This is the maximum size (in chars) of a non read/write packet.
395 It is also used as a cap on the size of read/write packets. */
396 long remote_packet_size
;
399 long sizeof_pkt
= 2000;
401 /* Utility: generate error from an incoming stub packet. */
403 trace_error (char *buf
)
406 return; /* not an error msg */
409 case '1': /* malformed packet error */
410 if (*++buf
== '0') /* general case: */
411 error (_("remote.c: error in outgoing packet."));
413 error (_("remote.c: error in outgoing packet at field #%ld."),
414 strtol (buf
, NULL
, 16));
416 error (_("trace API error 0x%s."), ++buf
);
418 error (_("Target returns error code '%s'."), buf
);
422 /* Utility: wait for reply from stub, while accepting "O" packets. */
424 remote_get_noisy_reply (char **buf_p
,
427 do /* Loop on reply from remote stub. */
430 QUIT
; /* allow user to bail out with ^C */
431 getpkt (buf_p
, sizeof_buf
, 0);
435 else if (buf
[0] == 'O' && buf
[1] != 'K')
436 remote_console_output (buf
+ 1); /* 'O' message from stub */
438 return buf
; /* here's the actual reply */
443 /* Handle for retreving the remote protocol data from gdbarch. */
444 static struct gdbarch_data
*remote_gdbarch_data_handle
;
446 static struct remote_arch_state
*
447 get_remote_arch_state (void)
449 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
452 /* Fetch the global remote target state. */
454 static struct remote_state
*
455 get_remote_state (void)
457 /* Make sure that the remote architecture state has been
458 initialized, because doing so might reallocate rs->buf. Any
459 function which calls getpkt also needs to be mindful of changes
460 to rs->buf, but this call limits the number of places which run
462 get_remote_arch_state ();
464 return get_remote_state_raw ();
468 compare_pnums (const void *lhs_
, const void *rhs_
)
470 const struct packet_reg
* const *lhs
= lhs_
;
471 const struct packet_reg
* const *rhs
= rhs_
;
473 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
475 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
482 init_remote_state (struct gdbarch
*gdbarch
)
484 int regnum
, num_remote_regs
, offset
;
485 struct remote_state
*rs
= get_remote_state_raw ();
486 struct remote_arch_state
*rsa
;
487 struct packet_reg
**remote_regs
;
489 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
491 /* Use the architecture to build a regnum<->pnum table, which will be
492 1:1 unless a feature set specifies otherwise. */
493 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
494 gdbarch_num_regs (gdbarch
),
496 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
498 struct packet_reg
*r
= &rsa
->regs
[regnum
];
500 if (register_size (gdbarch
, regnum
) == 0)
501 /* Do not try to fetch zero-sized (placeholder) registers. */
504 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
509 /* Define the g/G packet format as the contents of each register
510 with a remote protocol number, in order of ascending protocol
513 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
514 * sizeof (struct packet_reg
*));
515 for (num_remote_regs
= 0, regnum
= 0;
516 regnum
< gdbarch_num_regs (gdbarch
);
518 if (rsa
->regs
[regnum
].pnum
!= -1)
519 remote_regs
[num_remote_regs
++] = &rsa
->regs
[regnum
];
521 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
524 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
526 remote_regs
[regnum
]->in_g_packet
= 1;
527 remote_regs
[regnum
]->offset
= offset
;
528 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
531 /* Record the maximum possible size of the g packet - it may turn out
533 rsa
->sizeof_g_packet
= offset
;
535 /* Default maximum number of characters in a packet body. Many
536 remote stubs have a hardwired buffer size of 400 bytes
537 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
538 as the maximum packet-size to ensure that the packet and an extra
539 NUL character can always fit in the buffer. This stops GDB
540 trashing stubs that try to squeeze an extra NUL into what is
541 already a full buffer (As of 1999-12-04 that was most stubs). */
542 rsa
->remote_packet_size
= 400 - 1;
544 /* This one is filled in when a ``g'' packet is received. */
545 rsa
->actual_register_packet_size
= 0;
547 /* Should rsa->sizeof_g_packet needs more space than the
548 default, adjust the size accordingly. Remember that each byte is
549 encoded as two characters. 32 is the overhead for the packet
550 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
551 (``$NN:G...#NN'') is a better guess, the below has been padded a
553 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
554 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
556 /* Make sure that the packet buffer is plenty big enough for
557 this architecture. */
558 if (rs
->buf_size
< rsa
->remote_packet_size
)
560 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
561 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
567 /* Return the current allowed size of a remote packet. This is
568 inferred from the current architecture, and should be used to
569 limit the length of outgoing packets. */
571 get_remote_packet_size (void)
573 struct remote_state
*rs
= get_remote_state ();
574 struct remote_arch_state
*rsa
= get_remote_arch_state ();
576 if (rs
->explicit_packet_size
)
577 return rs
->explicit_packet_size
;
579 return rsa
->remote_packet_size
;
582 static struct packet_reg
*
583 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
585 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
589 struct packet_reg
*r
= &rsa
->regs
[regnum
];
590 gdb_assert (r
->regnum
== regnum
);
595 static struct packet_reg
*
596 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
599 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
601 struct packet_reg
*r
= &rsa
->regs
[i
];
608 /* FIXME: graces/2002-08-08: These variables should eventually be
609 bound to an instance of the target object (as in gdbarch-tdep()),
610 when such a thing exists. */
612 /* This is set to the data address of the access causing the target
613 to stop for a watchpoint. */
614 static CORE_ADDR remote_watch_data_address
;
616 /* This is non-zero if target stopped for a watchpoint. */
617 static int remote_stopped_by_watchpoint_p
;
619 static struct target_ops remote_ops
;
621 static struct target_ops extended_remote_ops
;
623 static int remote_async_mask_value
= 1;
625 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
626 ``forever'' still use the normal timeout mechanism. This is
627 currently used by the ASYNC code to guarentee that target reads
628 during the initial connect always time-out. Once getpkt has been
629 modified to return a timeout indication and, in turn
630 remote_wait()/wait_for_inferior() have gained a timeout parameter
632 static int wait_forever_enabled_p
= 1;
634 /* Allow the user to specify what sequence to send to the remote
635 when he requests a program interruption: Although ^C is usually
636 what remote systems expect (this is the default, here), it is
637 sometimes preferable to send a break. On other systems such
638 as the Linux kernel, a break followed by g, which is Magic SysRq g
639 is required in order to interrupt the execution. */
640 const char interrupt_sequence_control_c
[] = "Ctrl-C";
641 const char interrupt_sequence_break
[] = "BREAK";
642 const char interrupt_sequence_break_g
[] = "BREAK-g";
643 static const char *interrupt_sequence_modes
[] =
645 interrupt_sequence_control_c
,
646 interrupt_sequence_break
,
647 interrupt_sequence_break_g
,
650 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
653 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
654 struct cmd_list_element
*c
,
657 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
658 fprintf_filtered (file
,
659 _("Send the ASCII ETX character (Ctrl-c) "
660 "to the remote target to interrupt the "
661 "execution of the program.\n"));
662 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
663 fprintf_filtered (file
,
664 _("send a break signal to the remote target "
665 "to interrupt the execution of the program.\n"));
666 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
667 fprintf_filtered (file
,
668 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
669 "the remote target to interrupt the execution "
670 "of Linux kernel.\n"));
672 internal_error (__FILE__
, __LINE__
,
673 _("Invalid value for interrupt_sequence_mode: %s."),
674 interrupt_sequence_mode
);
677 /* This boolean variable specifies whether interrupt_sequence is sent
678 to the remote target when gdb connects to it.
679 This is mostly needed when you debug the Linux kernel: The Linux kernel
680 expects BREAK g which is Magic SysRq g for connecting gdb. */
681 static int interrupt_on_connect
= 0;
683 /* This variable is used to implement the "set/show remotebreak" commands.
684 Since these commands are now deprecated in favor of "set/show remote
685 interrupt-sequence", it no longer has any effect on the code. */
686 static int remote_break
;
689 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
692 interrupt_sequence_mode
= interrupt_sequence_break
;
694 interrupt_sequence_mode
= interrupt_sequence_control_c
;
698 show_remotebreak (struct ui_file
*file
, int from_tty
,
699 struct cmd_list_element
*c
,
704 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
705 remote_open knows that we don't have a file open when the program
707 static struct serial
*remote_desc
= NULL
;
709 /* This variable sets the number of bits in an address that are to be
710 sent in a memory ("M" or "m") packet. Normally, after stripping
711 leading zeros, the entire address would be sent. This variable
712 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
713 initial implementation of remote.c restricted the address sent in
714 memory packets to ``host::sizeof long'' bytes - (typically 32
715 bits). Consequently, for 64 bit targets, the upper 32 bits of an
716 address was never sent. Since fixing this bug may cause a break in
717 some remote targets this variable is principly provided to
718 facilitate backward compatibility. */
720 static int remote_address_size
;
722 /* Temporary to track who currently owns the terminal. See
723 remote_terminal_* for more details. */
725 static int remote_async_terminal_ours_p
;
727 /* The executable file to use for "run" on the remote side. */
729 static char *remote_exec_file
= "";
732 /* User configurable variables for the number of characters in a
733 memory read/write packet. MIN (rsa->remote_packet_size,
734 rsa->sizeof_g_packet) is the default. Some targets need smaller
735 values (fifo overruns, et.al.) and some users need larger values
736 (speed up transfers). The variables ``preferred_*'' (the user
737 request), ``current_*'' (what was actually set) and ``forced_*''
738 (Positive - a soft limit, negative - a hard limit). */
740 struct memory_packet_config
747 /* Compute the current size of a read/write packet. Since this makes
748 use of ``actual_register_packet_size'' the computation is dynamic. */
751 get_memory_packet_size (struct memory_packet_config
*config
)
753 struct remote_state
*rs
= get_remote_state ();
754 struct remote_arch_state
*rsa
= get_remote_arch_state ();
756 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
757 law?) that some hosts don't cope very well with large alloca()
758 calls. Eventually the alloca() code will be replaced by calls to
759 xmalloc() and make_cleanups() allowing this restriction to either
760 be lifted or removed. */
761 #ifndef MAX_REMOTE_PACKET_SIZE
762 #define MAX_REMOTE_PACKET_SIZE 16384
764 /* NOTE: 20 ensures we can write at least one byte. */
765 #ifndef MIN_REMOTE_PACKET_SIZE
766 #define MIN_REMOTE_PACKET_SIZE 20
771 if (config
->size
<= 0)
772 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
774 what_they_get
= config
->size
;
778 what_they_get
= get_remote_packet_size ();
779 /* Limit the packet to the size specified by the user. */
781 && what_they_get
> config
->size
)
782 what_they_get
= config
->size
;
784 /* Limit it to the size of the targets ``g'' response unless we have
785 permission from the stub to use a larger packet size. */
786 if (rs
->explicit_packet_size
== 0
787 && rsa
->actual_register_packet_size
> 0
788 && what_they_get
> rsa
->actual_register_packet_size
)
789 what_they_get
= rsa
->actual_register_packet_size
;
791 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
792 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
793 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
794 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
796 /* Make sure there is room in the global buffer for this packet
797 (including its trailing NUL byte). */
798 if (rs
->buf_size
< what_they_get
+ 1)
800 rs
->buf_size
= 2 * what_they_get
;
801 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
804 return what_they_get
;
807 /* Update the size of a read/write packet. If they user wants
808 something really big then do a sanity check. */
811 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
813 int fixed_p
= config
->fixed_p
;
814 long size
= config
->size
;
816 error (_("Argument required (integer, `fixed' or `limited')."));
817 else if (strcmp (args
, "hard") == 0
818 || strcmp (args
, "fixed") == 0)
820 else if (strcmp (args
, "soft") == 0
821 || strcmp (args
, "limit") == 0)
826 size
= strtoul (args
, &end
, 0);
828 error (_("Invalid %s (bad syntax)."), config
->name
);
830 /* Instead of explicitly capping the size of a packet to
831 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
832 instead allowed to set the size to something arbitrarily
834 if (size
> MAX_REMOTE_PACKET_SIZE
)
835 error (_("Invalid %s (too large)."), config
->name
);
839 if (fixed_p
&& !config
->fixed_p
)
841 if (! query (_("The target may not be able to correctly handle a %s\n"
842 "of %ld bytes. Change the packet size? "),
844 error (_("Packet size not changed."));
846 /* Update the config. */
847 config
->fixed_p
= fixed_p
;
852 show_memory_packet_size (struct memory_packet_config
*config
)
854 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
856 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
857 get_memory_packet_size (config
));
859 printf_filtered (_("Packets are limited to %ld bytes.\n"),
860 get_memory_packet_size (config
));
863 static struct memory_packet_config memory_write_packet_config
=
865 "memory-write-packet-size",
869 set_memory_write_packet_size (char *args
, int from_tty
)
871 set_memory_packet_size (args
, &memory_write_packet_config
);
875 show_memory_write_packet_size (char *args
, int from_tty
)
877 show_memory_packet_size (&memory_write_packet_config
);
881 get_memory_write_packet_size (void)
883 return get_memory_packet_size (&memory_write_packet_config
);
886 static struct memory_packet_config memory_read_packet_config
=
888 "memory-read-packet-size",
892 set_memory_read_packet_size (char *args
, int from_tty
)
894 set_memory_packet_size (args
, &memory_read_packet_config
);
898 show_memory_read_packet_size (char *args
, int from_tty
)
900 show_memory_packet_size (&memory_read_packet_config
);
904 get_memory_read_packet_size (void)
906 long size
= get_memory_packet_size (&memory_read_packet_config
);
907 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
908 extra buffer size argument before the memory read size can be
909 increased beyond this. */
910 if (size
> get_remote_packet_size ())
911 size
= get_remote_packet_size ();
916 /* Generic configuration support for packets the stub optionally
917 supports. Allows the user to specify the use of the packet as well
918 as allowing GDB to auto-detect support in the remote stub. */
922 PACKET_SUPPORT_UNKNOWN
= 0,
931 enum auto_boolean detect
;
932 enum packet_support support
;
935 /* Analyze a packet's return value and update the packet config
946 update_packet_config (struct packet_config
*config
)
948 switch (config
->detect
)
950 case AUTO_BOOLEAN_TRUE
:
951 config
->support
= PACKET_ENABLE
;
953 case AUTO_BOOLEAN_FALSE
:
954 config
->support
= PACKET_DISABLE
;
956 case AUTO_BOOLEAN_AUTO
:
957 config
->support
= PACKET_SUPPORT_UNKNOWN
;
963 show_packet_config_cmd (struct packet_config
*config
)
965 char *support
= "internal-error";
966 switch (config
->support
)
972 support
= "disabled";
974 case PACKET_SUPPORT_UNKNOWN
:
978 switch (config
->detect
)
980 case AUTO_BOOLEAN_AUTO
:
981 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
982 config
->name
, support
);
984 case AUTO_BOOLEAN_TRUE
:
985 case AUTO_BOOLEAN_FALSE
:
986 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
987 config
->name
, support
);
993 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
994 const char *title
, int legacy
)
1000 config
->name
= name
;
1001 config
->title
= title
;
1002 config
->detect
= AUTO_BOOLEAN_AUTO
;
1003 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1004 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1006 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
1008 /* set/show TITLE-packet {auto,on,off} */
1009 cmd_name
= xstrprintf ("%s-packet", title
);
1010 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1011 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
1012 set_remote_protocol_packet_cmd
,
1013 show_remote_protocol_packet_cmd
,
1014 &remote_set_cmdlist
, &remote_show_cmdlist
);
1015 /* The command code copies the documentation strings. */
1018 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1022 legacy_name
= xstrprintf ("%s-packet", name
);
1023 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1024 &remote_set_cmdlist
);
1025 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1026 &remote_show_cmdlist
);
1030 static enum packet_result
1031 packet_check_result (const char *buf
)
1035 /* The stub recognized the packet request. Check that the
1036 operation succeeded. */
1038 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1040 /* "Enn" - definitly an error. */
1041 return PACKET_ERROR
;
1043 /* Always treat "E." as an error. This will be used for
1044 more verbose error messages, such as E.memtypes. */
1045 if (buf
[0] == 'E' && buf
[1] == '.')
1046 return PACKET_ERROR
;
1048 /* The packet may or may not be OK. Just assume it is. */
1052 /* The stub does not support the packet. */
1053 return PACKET_UNKNOWN
;
1056 static enum packet_result
1057 packet_ok (const char *buf
, struct packet_config
*config
)
1059 enum packet_result result
;
1061 result
= packet_check_result (buf
);
1066 /* The stub recognized the packet request. */
1067 switch (config
->support
)
1069 case PACKET_SUPPORT_UNKNOWN
:
1071 fprintf_unfiltered (gdb_stdlog
,
1072 "Packet %s (%s) is supported\n",
1073 config
->name
, config
->title
);
1074 config
->support
= PACKET_ENABLE
;
1076 case PACKET_DISABLE
:
1077 internal_error (__FILE__
, __LINE__
,
1078 _("packet_ok: attempt to use a disabled packet"));
1084 case PACKET_UNKNOWN
:
1085 /* The stub does not support the packet. */
1086 switch (config
->support
)
1089 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1090 /* If the stub previously indicated that the packet was
1091 supported then there is a protocol error.. */
1092 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1093 config
->name
, config
->title
);
1095 /* The user set it wrong. */
1096 error (_("Enabled packet %s (%s) not recognized by stub"),
1097 config
->name
, config
->title
);
1099 case PACKET_SUPPORT_UNKNOWN
:
1101 fprintf_unfiltered (gdb_stdlog
,
1102 "Packet %s (%s) is NOT supported\n",
1103 config
->name
, config
->title
);
1104 config
->support
= PACKET_DISABLE
;
1106 case PACKET_DISABLE
:
1128 PACKET_vFile_pwrite
,
1130 PACKET_vFile_unlink
,
1132 PACKET_qXfer_features
,
1133 PACKET_qXfer_libraries
,
1134 PACKET_qXfer_memory_map
,
1135 PACKET_qXfer_spu_read
,
1136 PACKET_qXfer_spu_write
,
1137 PACKET_qXfer_osdata
,
1138 PACKET_qXfer_threads
,
1142 PACKET_QPassSignals
,
1143 PACKET_qSearch_memory
,
1146 PACKET_QStartNoAckMode
,
1148 PACKET_qXfer_siginfo_read
,
1149 PACKET_qXfer_siginfo_write
,
1151 PACKET_ConditionalTracepoints
,
1152 PACKET_FastTracepoints
,
1155 PACKET_TracepointSource
,
1159 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1162 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1163 struct cmd_list_element
*c
)
1165 struct packet_config
*packet
;
1167 for (packet
= remote_protocol_packets
;
1168 packet
< &remote_protocol_packets
[PACKET_MAX
];
1171 if (&packet
->detect
== c
->var
)
1173 update_packet_config (packet
);
1177 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1182 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1183 struct cmd_list_element
*c
,
1186 struct packet_config
*packet
;
1188 for (packet
= remote_protocol_packets
;
1189 packet
< &remote_protocol_packets
[PACKET_MAX
];
1192 if (&packet
->detect
== c
->var
)
1194 show_packet_config_cmd (packet
);
1198 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1202 /* Should we try one of the 'Z' requests? */
1206 Z_PACKET_SOFTWARE_BP
,
1207 Z_PACKET_HARDWARE_BP
,
1214 /* For compatibility with older distributions. Provide a ``set remote
1215 Z-packet ...'' command that updates all the Z packet types. */
1217 static enum auto_boolean remote_Z_packet_detect
;
1220 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1221 struct cmd_list_element
*c
)
1224 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1226 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1227 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1232 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1233 struct cmd_list_element
*c
,
1237 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1239 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1243 /* Should we try the 'ThreadInfo' query packet?
1245 This variable (NOT available to the user: auto-detect only!)
1246 determines whether GDB will use the new, simpler "ThreadInfo"
1247 query or the older, more complex syntax for thread queries.
1248 This is an auto-detect variable (set to true at each connect,
1249 and set to false when the target fails to recognize it). */
1251 static int use_threadinfo_query
;
1252 static int use_threadextra_query
;
1254 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1255 static struct async_signal_handler
*sigint_remote_twice_token
;
1256 static struct async_signal_handler
*sigint_remote_token
;
1259 /* Asynchronous signal handle registered as event loop source for
1260 when we have pending events ready to be passed to the core. */
1262 static struct async_event_handler
*remote_async_inferior_event_token
;
1264 /* Asynchronous signal handle registered as event loop source for when
1265 the remote sent us a %Stop notification. The registered callback
1266 will do a vStopped sequence to pull the rest of the events out of
1267 the remote side into our event queue. */
1269 static struct async_event_handler
*remote_async_get_pending_events_token
;
1272 static ptid_t magic_null_ptid
;
1273 static ptid_t not_sent_ptid
;
1274 static ptid_t any_thread_ptid
;
1276 /* These are the threads which we last sent to the remote system. The
1277 TID member will be -1 for all or -2 for not sent yet. */
1279 static ptid_t general_thread
;
1280 static ptid_t continue_thread
;
1282 /* Find out if the stub attached to PID (and hence GDB should offer to
1283 detach instead of killing it when bailing out). */
1286 remote_query_attached (int pid
)
1288 struct remote_state
*rs
= get_remote_state ();
1290 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1293 if (remote_multi_process_p (rs
))
1294 sprintf (rs
->buf
, "qAttached:%x", pid
);
1296 sprintf (rs
->buf
, "qAttached");
1299 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1301 switch (packet_ok (rs
->buf
,
1302 &remote_protocol_packets
[PACKET_qAttached
]))
1305 if (strcmp (rs
->buf
, "1") == 0)
1309 warning (_("Remote failure reply: %s"), rs
->buf
);
1311 case PACKET_UNKNOWN
:
1318 /* Add PID to GDB's inferior table. Since we can be connected to a
1319 remote system before before knowing about any inferior, mark the
1320 target with execution when we find the first inferior. If ATTACHED
1321 is 1, then we had just attached to this inferior. If it is 0, then
1322 we just created this inferior. If it is -1, then try querying the
1323 remote stub to find out if it had attached to the inferior or
1326 static struct inferior
*
1327 remote_add_inferior (int pid
, int attached
)
1329 struct inferior
*inf
;
1331 /* Check whether this process we're learning about is to be
1332 considered attached, or if is to be considered to have been
1333 spawned by the stub. */
1335 attached
= remote_query_attached (pid
);
1337 if (gdbarch_has_global_solist (target_gdbarch
))
1339 /* If the target shares code across all inferiors, then every
1340 attach adds a new inferior. */
1341 inf
= add_inferior (pid
);
1343 /* ... and every inferior is bound to the same program space.
1344 However, each inferior may still have its own address
1346 inf
->aspace
= maybe_new_address_space ();
1347 inf
->pspace
= current_program_space
;
1351 /* In the traditional debugging scenario, there's a 1-1 match
1352 between program/address spaces. We simply bind the inferior
1353 to the program space's address space. */
1354 inf
= current_inferior ();
1355 inferior_appeared (inf
, pid
);
1358 inf
->attach_flag
= attached
;
1363 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1364 according to RUNNING. */
1367 remote_add_thread (ptid_t ptid
, int running
)
1371 set_executing (ptid
, running
);
1372 set_running (ptid
, running
);
1375 /* Come here when we learn about a thread id from the remote target.
1376 It may be the first time we hear about such thread, so take the
1377 opportunity to add it to GDB's thread list. In case this is the
1378 first time we're noticing its corresponding inferior, add it to
1379 GDB's inferior list as well. */
1382 remote_notice_new_inferior (ptid_t currthread
, int running
)
1384 /* If this is a new thread, add it to GDB's thread list.
1385 If we leave it up to WFI to do this, bad things will happen. */
1387 if (in_thread_list (currthread
) && is_exited (currthread
))
1389 /* We're seeing an event on a thread id we knew had exited.
1390 This has to be a new thread reusing the old id. Add it. */
1391 remote_add_thread (currthread
, running
);
1395 if (!in_thread_list (currthread
))
1397 struct inferior
*inf
= NULL
;
1398 int pid
= ptid_get_pid (currthread
);
1400 if (ptid_is_pid (inferior_ptid
)
1401 && pid
== ptid_get_pid (inferior_ptid
))
1403 /* inferior_ptid has no thread member yet. This can happen
1404 with the vAttach -> remote_wait,"TAAthread:" path if the
1405 stub doesn't support qC. This is the first stop reported
1406 after an attach, so this is the main thread. Update the
1407 ptid in the thread list. */
1408 if (in_thread_list (pid_to_ptid (pid
)))
1409 thread_change_ptid (inferior_ptid
, currthread
);
1412 remote_add_thread (currthread
, running
);
1413 inferior_ptid
= currthread
;
1418 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1420 /* inferior_ptid is not set yet. This can happen with the
1421 vRun -> remote_wait,"TAAthread:" path if the stub
1422 doesn't support qC. This is the first stop reported
1423 after an attach, so this is the main thread. Update the
1424 ptid in the thread list. */
1425 thread_change_ptid (inferior_ptid
, currthread
);
1429 /* When connecting to a target remote, or to a target
1430 extended-remote which already was debugging an inferior, we
1431 may not know about it yet. Add it before adding its child
1432 thread, so notifications are emitted in a sensible order. */
1433 if (!in_inferior_list (ptid_get_pid (currthread
)))
1434 inf
= remote_add_inferior (ptid_get_pid (currthread
), -1);
1436 /* This is really a new thread. Add it. */
1437 remote_add_thread (currthread
, running
);
1439 /* If we found a new inferior, let the common code do whatever
1440 it needs to with it (e.g., read shared libraries, insert
1443 notice_new_inferior (currthread
, running
, 0);
1447 /* Return the private thread data, creating it if necessary. */
1449 struct private_thread_info
*
1450 demand_private_info (ptid_t ptid
)
1452 struct thread_info
*info
= find_thread_ptid (ptid
);
1458 info
->private = xmalloc (sizeof (*(info
->private)));
1459 info
->private_dtor
= free_private_thread_info
;
1460 info
->private->core
= -1;
1461 info
->private->extra
= 0;
1464 return info
->private;
1467 /* Call this function as a result of
1468 1) A halt indication (T packet) containing a thread id
1469 2) A direct query of currthread
1470 3) Successful execution of set thread
1474 record_currthread (ptid_t currthread
)
1476 general_thread
= currthread
;
1479 static char *last_pass_packet
;
1481 /* If 'QPassSignals' is supported, tell the remote stub what signals
1482 it can simply pass through to the inferior without reporting. */
1485 remote_pass_signals (void)
1487 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1489 char *pass_packet
, *p
;
1490 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1493 gdb_assert (numsigs
< 256);
1494 for (i
= 0; i
< numsigs
; i
++)
1496 if (signal_stop_state (i
) == 0
1497 && signal_print_state (i
) == 0
1498 && signal_pass_state (i
) == 1)
1501 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1502 strcpy (pass_packet
, "QPassSignals:");
1503 p
= pass_packet
+ strlen (pass_packet
);
1504 for (i
= 0; i
< numsigs
; i
++)
1506 if (signal_stop_state (i
) == 0
1507 && signal_print_state (i
) == 0
1508 && signal_pass_state (i
) == 1)
1511 *p
++ = tohex (i
>> 4);
1512 *p
++ = tohex (i
& 15);
1521 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1523 struct remote_state
*rs
= get_remote_state ();
1524 char *buf
= rs
->buf
;
1526 putpkt (pass_packet
);
1527 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1528 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1529 if (last_pass_packet
)
1530 xfree (last_pass_packet
);
1531 last_pass_packet
= pass_packet
;
1534 xfree (pass_packet
);
1539 remote_notice_signals (ptid_t ptid
)
1541 /* Update the remote on signals to silently pass, if they've
1543 remote_pass_signals ();
1546 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1547 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1548 thread. If GEN is set, set the general thread, if not, then set
1549 the step/continue thread. */
1551 set_thread (struct ptid ptid
, int gen
)
1553 struct remote_state
*rs
= get_remote_state ();
1554 ptid_t state
= gen
? general_thread
: continue_thread
;
1555 char *buf
= rs
->buf
;
1556 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1558 if (ptid_equal (state
, ptid
))
1562 *buf
++ = gen
? 'g' : 'c';
1563 if (ptid_equal (ptid
, magic_null_ptid
))
1564 xsnprintf (buf
, endbuf
- buf
, "0");
1565 else if (ptid_equal (ptid
, any_thread_ptid
))
1566 xsnprintf (buf
, endbuf
- buf
, "0");
1567 else if (ptid_equal (ptid
, minus_one_ptid
))
1568 xsnprintf (buf
, endbuf
- buf
, "-1");
1570 write_ptid (buf
, endbuf
, ptid
);
1572 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1574 general_thread
= ptid
;
1576 continue_thread
= ptid
;
1580 set_general_thread (struct ptid ptid
)
1582 set_thread (ptid
, 1);
1586 set_continue_thread (struct ptid ptid
)
1588 set_thread (ptid
, 0);
1591 /* Change the remote current process. Which thread within the process
1592 ends up selected isn't important, as long as it is the same process
1593 as what INFERIOR_PTID points to.
1595 This comes from that fact that there is no explicit notion of
1596 "selected process" in the protocol. The selected process for
1597 general operations is the process the selected general thread
1601 set_general_process (void)
1603 struct remote_state
*rs
= get_remote_state ();
1605 /* If the remote can't handle multiple processes, don't bother. */
1606 if (!remote_multi_process_p (rs
))
1609 /* We only need to change the remote current thread if it's pointing
1610 at some other process. */
1611 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1612 set_general_thread (inferior_ptid
);
1616 /* Return nonzero if the thread PTID is still alive on the remote
1620 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1622 struct remote_state
*rs
= get_remote_state ();
1625 if (ptid_equal (ptid
, magic_null_ptid
))
1626 /* The main thread is always alive. */
1629 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1630 /* The main thread is always alive. This can happen after a
1631 vAttach, if the remote side doesn't support
1636 endp
= rs
->buf
+ get_remote_packet_size ();
1639 write_ptid (p
, endp
, ptid
);
1642 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1643 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1646 /* About these extended threadlist and threadinfo packets. They are
1647 variable length packets but, the fields within them are often fixed
1648 length. They are redundent enough to send over UDP as is the
1649 remote protocol in general. There is a matching unit test module
1652 #define OPAQUETHREADBYTES 8
1654 /* a 64 bit opaque identifier */
1655 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1657 /* WARNING: This threadref data structure comes from the remote O.S.,
1658 libstub protocol encoding, and remote.c. it is not particularly
1661 /* Right now, the internal structure is int. We want it to be bigger.
1665 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1667 /* gdb_ext_thread_info is an internal GDB data structure which is
1668 equivalent to the reply of the remote threadinfo packet. */
1670 struct gdb_ext_thread_info
1672 threadref threadid
; /* External form of thread reference. */
1673 int active
; /* Has state interesting to GDB?
1675 char display
[256]; /* Brief state display, name,
1676 blocked/suspended. */
1677 char shortname
[32]; /* To be used to name threads. */
1678 char more_display
[256]; /* Long info, statistics, queue depth,
1682 /* The volume of remote transfers can be limited by submitting
1683 a mask containing bits specifying the desired information.
1684 Use a union of these values as the 'selection' parameter to
1685 get_thread_info. FIXME: Make these TAG names more thread specific.
1688 #define TAG_THREADID 1
1689 #define TAG_EXISTS 2
1690 #define TAG_DISPLAY 4
1691 #define TAG_THREADNAME 8
1692 #define TAG_MOREDISPLAY 16
1694 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1696 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1698 static char *unpack_nibble (char *buf
, int *val
);
1700 static char *pack_nibble (char *buf
, int nibble
);
1702 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1704 static char *unpack_byte (char *buf
, int *value
);
1706 static char *pack_int (char *buf
, int value
);
1708 static char *unpack_int (char *buf
, int *value
);
1710 static char *unpack_string (char *src
, char *dest
, int length
);
1712 static char *pack_threadid (char *pkt
, threadref
*id
);
1714 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1716 void int_to_threadref (threadref
*id
, int value
);
1718 static int threadref_to_int (threadref
*ref
);
1720 static void copy_threadref (threadref
*dest
, threadref
*src
);
1722 static int threadmatch (threadref
*dest
, threadref
*src
);
1724 static char *pack_threadinfo_request (char *pkt
, int mode
,
1727 static int remote_unpack_thread_info_response (char *pkt
,
1728 threadref
*expectedref
,
1729 struct gdb_ext_thread_info
1733 static int remote_get_threadinfo (threadref
*threadid
,
1734 int fieldset
, /*TAG mask */
1735 struct gdb_ext_thread_info
*info
);
1737 static char *pack_threadlist_request (char *pkt
, int startflag
,
1739 threadref
*nextthread
);
1741 static int parse_threadlist_response (char *pkt
,
1743 threadref
*original_echo
,
1744 threadref
*resultlist
,
1747 static int remote_get_threadlist (int startflag
,
1748 threadref
*nextthread
,
1752 threadref
*threadlist
);
1754 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1756 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1757 void *context
, int looplimit
);
1759 static int remote_newthread_step (threadref
*ref
, void *context
);
1762 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1763 buffer we're allowed to write to. Returns
1764 BUF+CHARACTERS_WRITTEN. */
1767 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1770 struct remote_state
*rs
= get_remote_state ();
1772 if (remote_multi_process_p (rs
))
1774 pid
= ptid_get_pid (ptid
);
1776 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1778 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1780 tid
= ptid_get_tid (ptid
);
1782 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1784 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1789 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1790 passed the last parsed char. Returns null_ptid on error. */
1793 read_ptid (char *buf
, char **obuf
)
1797 ULONGEST pid
= 0, tid
= 0;
1801 /* Multi-process ptid. */
1802 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1804 error (_("invalid remote ptid: %s\n"), p
);
1807 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1810 return ptid_build (pid
, 0, tid
);
1813 /* No multi-process. Just a tid. */
1814 pp
= unpack_varlen_hex (p
, &tid
);
1816 /* Since the stub is not sending a process id, then default to
1817 what's in inferior_ptid, unless it's null at this point. If so,
1818 then since there's no way to know the pid of the reported
1819 threads, use the magic number. */
1820 if (ptid_equal (inferior_ptid
, null_ptid
))
1821 pid
= ptid_get_pid (magic_null_ptid
);
1823 pid
= ptid_get_pid (inferior_ptid
);
1827 return ptid_build (pid
, 0, tid
);
1830 /* Encode 64 bits in 16 chars of hex. */
1832 static const char hexchars
[] = "0123456789abcdef";
1835 ishex (int ch
, int *val
)
1837 if ((ch
>= 'a') && (ch
<= 'f'))
1839 *val
= ch
- 'a' + 10;
1842 if ((ch
>= 'A') && (ch
<= 'F'))
1844 *val
= ch
- 'A' + 10;
1847 if ((ch
>= '0') && (ch
<= '9'))
1858 if (ch
>= 'a' && ch
<= 'f')
1859 return ch
- 'a' + 10;
1860 if (ch
>= '0' && ch
<= '9')
1862 if (ch
>= 'A' && ch
<= 'F')
1863 return ch
- 'A' + 10;
1868 stub_unpack_int (char *buff
, int fieldlength
)
1875 nibble
= stubhex (*buff
++);
1879 retval
= retval
<< 4;
1885 unpack_varlen_hex (char *buff
, /* packet to parse */
1889 ULONGEST retval
= 0;
1891 while (ishex (*buff
, &nibble
))
1894 retval
= retval
<< 4;
1895 retval
|= nibble
& 0x0f;
1902 unpack_nibble (char *buf
, int *val
)
1904 *val
= fromhex (*buf
++);
1909 pack_nibble (char *buf
, int nibble
)
1911 *buf
++ = hexchars
[(nibble
& 0x0f)];
1916 pack_hex_byte (char *pkt
, int byte
)
1918 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1919 *pkt
++ = hexchars
[(byte
& 0xf)];
1924 unpack_byte (char *buf
, int *value
)
1926 *value
= stub_unpack_int (buf
, 2);
1931 pack_int (char *buf
, int value
)
1933 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1934 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1935 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1936 buf
= pack_hex_byte (buf
, (value
& 0xff));
1941 unpack_int (char *buf
, int *value
)
1943 *value
= stub_unpack_int (buf
, 8);
1947 #if 0 /* Currently unused, uncomment when needed. */
1948 static char *pack_string (char *pkt
, char *string
);
1951 pack_string (char *pkt
, char *string
)
1956 len
= strlen (string
);
1958 len
= 200; /* Bigger than most GDB packets, junk??? */
1959 pkt
= pack_hex_byte (pkt
, len
);
1963 if ((ch
== '\0') || (ch
== '#'))
1964 ch
= '*'; /* Protect encapsulation. */
1969 #endif /* 0 (unused) */
1972 unpack_string (char *src
, char *dest
, int length
)
1981 pack_threadid (char *pkt
, threadref
*id
)
1984 unsigned char *altid
;
1986 altid
= (unsigned char *) id
;
1987 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1989 pkt
= pack_hex_byte (pkt
, *altid
++);
1995 unpack_threadid (char *inbuf
, threadref
*id
)
1998 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2001 altref
= (char *) id
;
2003 while (inbuf
< limit
)
2005 x
= stubhex (*inbuf
++);
2006 y
= stubhex (*inbuf
++);
2007 *altref
++ = (x
<< 4) | y
;
2012 /* Externally, threadrefs are 64 bits but internally, they are still
2013 ints. This is due to a mismatch of specifications. We would like
2014 to use 64bit thread references internally. This is an adapter
2018 int_to_threadref (threadref
*id
, int value
)
2020 unsigned char *scan
;
2022 scan
= (unsigned char *) id
;
2028 *scan
++ = (value
>> 24) & 0xff;
2029 *scan
++ = (value
>> 16) & 0xff;
2030 *scan
++ = (value
>> 8) & 0xff;
2031 *scan
++ = (value
& 0xff);
2035 threadref_to_int (threadref
*ref
)
2038 unsigned char *scan
;
2044 value
= (value
<< 8) | ((*scan
++) & 0xff);
2049 copy_threadref (threadref
*dest
, threadref
*src
)
2052 unsigned char *csrc
, *cdest
;
2054 csrc
= (unsigned char *) src
;
2055 cdest
= (unsigned char *) dest
;
2062 threadmatch (threadref
*dest
, threadref
*src
)
2064 /* Things are broken right now, so just assume we got a match. */
2066 unsigned char *srcp
, *destp
;
2068 srcp
= (char *) src
;
2069 destp
= (char *) dest
;
2073 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2080 threadid:1, # always request threadid
2087 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2090 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2092 *pkt
++ = 'q'; /* Info Query */
2093 *pkt
++ = 'P'; /* process or thread info */
2094 pkt
= pack_int (pkt
, mode
); /* mode */
2095 pkt
= pack_threadid (pkt
, id
); /* threadid */
2096 *pkt
= '\0'; /* terminate */
2100 /* These values tag the fields in a thread info response packet. */
2101 /* Tagging the fields allows us to request specific fields and to
2102 add more fields as time goes by. */
2104 #define TAG_THREADID 1 /* Echo the thread identifier. */
2105 #define TAG_EXISTS 2 /* Is this process defined enough to
2106 fetch registers and its stack? */
2107 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2108 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2109 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2113 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2114 struct gdb_ext_thread_info
*info
)
2116 struct remote_state
*rs
= get_remote_state ();
2120 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2123 /* info->threadid = 0; FIXME: implement zero_threadref. */
2125 info
->display
[0] = '\0';
2126 info
->shortname
[0] = '\0';
2127 info
->more_display
[0] = '\0';
2129 /* Assume the characters indicating the packet type have been
2131 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2132 pkt
= unpack_threadid (pkt
, &ref
);
2135 warning (_("Incomplete response to threadinfo request."));
2136 if (!threadmatch (&ref
, expectedref
))
2137 { /* This is an answer to a different request. */
2138 warning (_("ERROR RMT Thread info mismatch."));
2141 copy_threadref (&info
->threadid
, &ref
);
2143 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2145 /* Packets are terminated with nulls. */
2146 while ((pkt
< limit
) && mask
&& *pkt
)
2148 pkt
= unpack_int (pkt
, &tag
); /* tag */
2149 pkt
= unpack_byte (pkt
, &length
); /* length */
2150 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2152 warning (_("ERROR RMT: threadinfo tag mismatch."));
2156 if (tag
== TAG_THREADID
)
2160 warning (_("ERROR RMT: length of threadid is not 16."));
2164 pkt
= unpack_threadid (pkt
, &ref
);
2165 mask
= mask
& ~TAG_THREADID
;
2168 if (tag
== TAG_EXISTS
)
2170 info
->active
= stub_unpack_int (pkt
, length
);
2172 mask
= mask
& ~(TAG_EXISTS
);
2175 warning (_("ERROR RMT: 'exists' length too long."));
2181 if (tag
== TAG_THREADNAME
)
2183 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2184 mask
= mask
& ~TAG_THREADNAME
;
2187 if (tag
== TAG_DISPLAY
)
2189 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2190 mask
= mask
& ~TAG_DISPLAY
;
2193 if (tag
== TAG_MOREDISPLAY
)
2195 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2196 mask
= mask
& ~TAG_MOREDISPLAY
;
2199 warning (_("ERROR RMT: unknown thread info tag."));
2200 break; /* Not a tag we know about. */
2206 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2207 struct gdb_ext_thread_info
*info
)
2209 struct remote_state
*rs
= get_remote_state ();
2212 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2214 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2216 if (rs
->buf
[0] == '\0')
2219 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2224 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2227 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2228 threadref
*nextthread
)
2230 *pkt
++ = 'q'; /* info query packet */
2231 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2232 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2233 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2234 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2239 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2242 parse_threadlist_response (char *pkt
, int result_limit
,
2243 threadref
*original_echo
, threadref
*resultlist
,
2246 struct remote_state
*rs
= get_remote_state ();
2248 int count
, resultcount
, done
;
2251 /* Assume the 'q' and 'M chars have been stripped. */
2252 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2253 /* done parse past here */
2254 pkt
= unpack_byte (pkt
, &count
); /* count field */
2255 pkt
= unpack_nibble (pkt
, &done
);
2256 /* The first threadid is the argument threadid. */
2257 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2258 while ((count
-- > 0) && (pkt
< limit
))
2260 pkt
= unpack_threadid (pkt
, resultlist
++);
2261 if (resultcount
++ >= result_limit
)
2270 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2271 int *done
, int *result_count
, threadref
*threadlist
)
2273 struct remote_state
*rs
= get_remote_state ();
2274 static threadref echo_nextthread
;
2277 /* Trancate result limit to be smaller than the packet size. */
2278 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= get_remote_packet_size ())
2279 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2281 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2283 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2285 if (*rs
->buf
== '\0')
2289 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2292 if (!threadmatch (&echo_nextthread
, nextthread
))
2294 /* FIXME: This is a good reason to drop the packet. */
2295 /* Possably, there is a duplicate response. */
2297 retransmit immediatly - race conditions
2298 retransmit after timeout - yes
2300 wait for packet, then exit
2302 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2303 return 0; /* I choose simply exiting. */
2305 if (*result_count
<= 0)
2309 warning (_("RMT ERROR : failed to get remote thread list."));
2312 return result
; /* break; */
2314 if (*result_count
> result_limit
)
2317 warning (_("RMT ERROR: threadlist response longer than requested."));
2323 /* This is the interface between remote and threads, remotes upper
2326 /* remote_find_new_threads retrieves the thread list and for each
2327 thread in the list, looks up the thread in GDB's internal list,
2328 adding the thread if it does not already exist. This involves
2329 getting partial thread lists from the remote target so, polling the
2330 quit_flag is required. */
2333 /* About this many threadisds fit in a packet. */
2335 #define MAXTHREADLISTRESULTS 32
2338 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2341 int done
, i
, result_count
;
2345 static threadref nextthread
;
2346 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2351 if (loopcount
++ > looplimit
)
2354 warning (_("Remote fetch threadlist -infinite loop-."));
2357 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2358 &done
, &result_count
, resultthreadlist
))
2363 /* Clear for later iterations. */
2365 /* Setup to resume next batch of thread references, set nextthread. */
2366 if (result_count
>= 1)
2367 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2369 while (result_count
--)
2370 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2377 remote_newthread_step (threadref
*ref
, void *context
)
2379 int pid
= ptid_get_pid (inferior_ptid
);
2380 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2382 if (!in_thread_list (ptid
))
2384 return 1; /* continue iterator */
2387 #define CRAZY_MAX_THREADS 1000
2390 remote_current_thread (ptid_t oldpid
)
2392 struct remote_state
*rs
= get_remote_state ();
2395 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2396 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2397 return read_ptid (&rs
->buf
[2], NULL
);
2402 /* Find new threads for info threads command.
2403 * Original version, using John Metzler's thread protocol.
2407 remote_find_new_threads (void)
2409 remote_threadlist_iterator (remote_newthread_step
, 0,
2413 #if defined(HAVE_LIBEXPAT)
2415 typedef struct thread_item
2421 DEF_VEC_O(thread_item_t
);
2423 struct threads_parsing_context
2425 VEC (thread_item_t
) *items
;
2429 start_thread (struct gdb_xml_parser
*parser
,
2430 const struct gdb_xml_element
*element
,
2431 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2433 struct threads_parsing_context
*data
= user_data
;
2435 struct thread_item item
;
2438 id
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
2439 item
.ptid
= read_ptid (id
, NULL
);
2441 if (VEC_length (gdb_xml_value_s
, attributes
) > 1)
2442 item
.core
= *(ULONGEST
*) VEC_index (gdb_xml_value_s
, attributes
, 1)->value
;
2448 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2452 end_thread (struct gdb_xml_parser
*parser
,
2453 const struct gdb_xml_element
*element
,
2454 void *user_data
, const char *body_text
)
2456 struct threads_parsing_context
*data
= user_data
;
2458 if (body_text
&& *body_text
)
2459 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2462 const struct gdb_xml_attribute thread_attributes
[] = {
2463 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2464 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2465 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2468 const struct gdb_xml_element thread_children
[] = {
2469 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2472 const struct gdb_xml_element threads_children
[] = {
2473 { "thread", thread_attributes
, thread_children
,
2474 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2475 start_thread
, end_thread
},
2476 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2479 const struct gdb_xml_element threads_elements
[] = {
2480 { "threads", NULL
, threads_children
,
2481 GDB_XML_EF_NONE
, NULL
, NULL
},
2482 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2485 /* Discard the contents of the constructed thread info context. */
2488 clear_threads_parsing_context (void *p
)
2490 struct threads_parsing_context
*context
= p
;
2492 struct thread_item
*item
;
2494 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2495 xfree (item
->extra
);
2497 VEC_free (thread_item_t
, context
->items
);
2503 * Find all threads for info threads command.
2504 * Uses new thread protocol contributed by Cisco.
2505 * Falls back and attempts to use the older method (above)
2506 * if the target doesn't respond to the new method.
2510 remote_threads_info (struct target_ops
*ops
)
2512 struct remote_state
*rs
= get_remote_state ();
2516 if (remote_desc
== 0) /* paranoia */
2517 error (_("Command can only be used when connected to the remote target."));
2519 #if defined(HAVE_LIBEXPAT)
2520 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2522 char *xml
= target_read_stralloc (¤t_target
,
2523 TARGET_OBJECT_THREADS
, NULL
);
2525 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2528 struct gdb_xml_parser
*parser
;
2529 struct threads_parsing_context context
;
2530 struct cleanup
*clear_parsing_context
;
2533 /* Note: this parser cleanup is already guarded by BACK_TO
2535 parser
= gdb_xml_create_parser_and_cleanup (_("threads"),
2539 gdb_xml_use_dtd (parser
, "threads.dtd");
2541 clear_parsing_context
2542 = make_cleanup (clear_threads_parsing_context
, &context
);
2544 if (gdb_xml_parse (parser
, xml
) == 0)
2547 struct thread_item
*item
;
2549 for (i
= 0; VEC_iterate (thread_item_t
, context
.items
, i
, item
); ++i
)
2551 if (!ptid_equal (item
->ptid
, null_ptid
))
2553 struct private_thread_info
*info
;
2554 /* In non-stop mode, we assume new found threads
2555 are running until proven otherwise with a
2556 stop reply. In all-stop, we can only get
2557 here if all threads are stopped. */
2558 int running
= non_stop
? 1 : 0;
2560 remote_notice_new_inferior (item
->ptid
, running
);
2562 info
= demand_private_info (item
->ptid
);
2563 info
->core
= item
->core
;
2564 info
->extra
= item
->extra
;
2570 do_cleanups (clear_parsing_context
);
2573 do_cleanups (back_to
);
2578 if (use_threadinfo_query
)
2580 putpkt ("qfThreadInfo");
2581 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2583 if (bufp
[0] != '\0') /* q packet recognized */
2585 while (*bufp
++ == 'm') /* reply contains one or more TID */
2589 new_thread
= read_ptid (bufp
, &bufp
);
2590 if (!ptid_equal (new_thread
, null_ptid
))
2592 /* In non-stop mode, we assume new found threads
2593 are running until proven otherwise with a
2594 stop reply. In all-stop, we can only get
2595 here if all threads are stopped. */
2596 int running
= non_stop
? 1 : 0;
2598 remote_notice_new_inferior (new_thread
, running
);
2601 while (*bufp
++ == ','); /* comma-separated list */
2602 putpkt ("qsThreadInfo");
2603 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2610 /* Only qfThreadInfo is supported in non-stop mode. */
2614 /* Else fall back to old method based on jmetzler protocol. */
2615 use_threadinfo_query
= 0;
2616 remote_find_new_threads ();
2621 * Collect a descriptive string about the given thread.
2622 * The target may say anything it wants to about the thread
2623 * (typically info about its blocked / runnable state, name, etc.).
2624 * This string will appear in the info threads display.
2626 * Optional: targets are not required to implement this function.
2630 remote_threads_extra_info (struct thread_info
*tp
)
2632 struct remote_state
*rs
= get_remote_state ();
2636 struct gdb_ext_thread_info threadinfo
;
2637 static char display_buf
[100]; /* arbitrary... */
2638 int n
= 0; /* position in display_buf */
2640 if (remote_desc
== 0) /* paranoia */
2641 internal_error (__FILE__
, __LINE__
,
2642 _("remote_threads_extra_info"));
2644 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2645 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2646 /* This is the main thread which was added by GDB. The remote
2647 server doesn't know about it. */
2650 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2652 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2653 if (info
&& info
->private)
2654 return info
->private->extra
;
2659 if (use_threadextra_query
)
2662 char *endb
= rs
->buf
+ get_remote_packet_size ();
2664 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2666 write_ptid (b
, endb
, tp
->ptid
);
2669 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2670 if (rs
->buf
[0] != 0)
2672 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2673 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2674 display_buf
[result
] = '\0';
2679 /* If the above query fails, fall back to the old method. */
2680 use_threadextra_query
= 0;
2681 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2682 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2683 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2684 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2685 if (threadinfo
.active
)
2687 if (*threadinfo
.shortname
)
2688 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2689 " Name: %s,", threadinfo
.shortname
);
2690 if (*threadinfo
.display
)
2691 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2692 " State: %s,", threadinfo
.display
);
2693 if (*threadinfo
.more_display
)
2694 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2695 " Priority: %s", threadinfo
.more_display
);
2699 /* For purely cosmetic reasons, clear up trailing commas. */
2700 if (',' == display_buf
[n
-1])
2701 display_buf
[n
-1] = ' ';
2709 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2712 remote_get_ada_task_ptid (long lwp
, long thread
)
2714 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2718 /* Restart the remote side; this is an extended protocol operation. */
2721 extended_remote_restart (void)
2723 struct remote_state
*rs
= get_remote_state ();
2725 /* Send the restart command; for reasons I don't understand the
2726 remote side really expects a number after the "R". */
2727 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2730 remote_fileio_reset ();
2733 /* Clean up connection to a remote debugger. */
2736 remote_close (int quitting
)
2738 if (remote_desc
== NULL
)
2739 return; /* already closed */
2741 /* Make sure we leave stdin registered in the event loop, and we
2742 don't leave the async SIGINT signal handler installed. */
2743 remote_terminal_ours ();
2745 serial_close (remote_desc
);
2748 /* We don't have a connection to the remote stub anymore. Get rid
2749 of all the inferiors and their threads we were controlling. */
2750 discard_all_inferiors ();
2752 /* We're no longer interested in any of these events. */
2753 discard_pending_stop_replies (-1);
2755 if (remote_async_inferior_event_token
)
2756 delete_async_event_handler (&remote_async_inferior_event_token
);
2757 if (remote_async_get_pending_events_token
)
2758 delete_async_event_handler (&remote_async_get_pending_events_token
);
2761 /* Query the remote side for the text, data and bss offsets. */
2766 struct remote_state
*rs
= get_remote_state ();
2769 int lose
, num_segments
= 0, do_sections
, do_segments
;
2770 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2771 struct section_offsets
*offs
;
2772 struct symfile_segment_data
*data
;
2774 if (symfile_objfile
== NULL
)
2777 putpkt ("qOffsets");
2778 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2781 if (buf
[0] == '\000')
2782 return; /* Return silently. Stub doesn't support
2786 warning (_("Remote failure reply: %s"), buf
);
2790 /* Pick up each field in turn. This used to be done with scanf, but
2791 scanf will make trouble if CORE_ADDR size doesn't match
2792 conversion directives correctly. The following code will work
2793 with any size of CORE_ADDR. */
2794 text_addr
= data_addr
= bss_addr
= 0;
2798 if (strncmp (ptr
, "Text=", 5) == 0)
2801 /* Don't use strtol, could lose on big values. */
2802 while (*ptr
&& *ptr
!= ';')
2803 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2805 if (strncmp (ptr
, ";Data=", 6) == 0)
2808 while (*ptr
&& *ptr
!= ';')
2809 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2814 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2817 while (*ptr
&& *ptr
!= ';')
2818 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2820 if (bss_addr
!= data_addr
)
2821 warning (_("Target reported unsupported offsets: %s"), buf
);
2826 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2829 /* Don't use strtol, could lose on big values. */
2830 while (*ptr
&& *ptr
!= ';')
2831 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2834 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
2837 while (*ptr
&& *ptr
!= ';')
2838 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2846 error (_("Malformed response to offset query, %s"), buf
);
2847 else if (*ptr
!= '\0')
2848 warning (_("Target reported unsupported offsets: %s"), buf
);
2850 offs
= ((struct section_offsets
*)
2851 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
2852 memcpy (offs
, symfile_objfile
->section_offsets
,
2853 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2855 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
2856 do_segments
= (data
!= NULL
);
2857 do_sections
= num_segments
== 0;
2859 if (num_segments
> 0)
2861 segments
[0] = text_addr
;
2862 segments
[1] = data_addr
;
2864 /* If we have two segments, we can still try to relocate everything
2865 by assuming that the .text and .data offsets apply to the whole
2866 text and data segments. Convert the offsets given in the packet
2867 to base addresses for symfile_map_offsets_to_segments. */
2868 else if (data
&& data
->num_segments
== 2)
2870 segments
[0] = data
->segment_bases
[0] + text_addr
;
2871 segments
[1] = data
->segment_bases
[1] + data_addr
;
2874 /* If the object file has only one segment, assume that it is text
2875 rather than data; main programs with no writable data are rare,
2876 but programs with no code are useless. Of course the code might
2877 have ended up in the data segment... to detect that we would need
2878 the permissions here. */
2879 else if (data
&& data
->num_segments
== 1)
2881 segments
[0] = data
->segment_bases
[0] + text_addr
;
2884 /* There's no way to relocate by segment. */
2890 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
2891 offs
, num_segments
, segments
);
2893 if (ret
== 0 && !do_sections
)
2894 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
2901 free_symfile_segment_data (data
);
2905 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
2907 /* This is a temporary kludge to force data and bss to use the same offsets
2908 because that's what nlmconv does now. The real solution requires changes
2909 to the stub and remote.c that I don't have time to do right now. */
2911 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2912 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2915 objfile_relocate (symfile_objfile
, offs
);
2918 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
2919 threads we know are stopped already. This is used during the
2920 initial remote connection in non-stop mode --- threads that are
2921 reported as already being stopped are left stopped. */
2924 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
2926 /* If we have a stop reply for this thread, it must be stopped. */
2927 if (peek_stop_reply (thread
->ptid
))
2928 set_stop_requested (thread
->ptid
, 1);
2933 /* Stub for catch_exception. */
2935 struct start_remote_args
2939 /* The current target. */
2940 struct target_ops
*target
;
2942 /* Non-zero if this is an extended-remote target. */
2946 /* Send interrupt_sequence to remote target. */
2948 send_interrupt_sequence ()
2950 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
2951 serial_write (remote_desc
, "\x03", 1);
2952 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
2953 serial_send_break (remote_desc
);
2954 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
2956 serial_send_break (remote_desc
);
2957 serial_write (remote_desc
, "g", 1);
2960 internal_error (__FILE__
, __LINE__
,
2961 _("Invalid value for interrupt_sequence_mode: %s."),
2962 interrupt_sequence_mode
);
2966 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
2968 struct start_remote_args
*args
= opaque
;
2969 struct remote_state
*rs
= get_remote_state ();
2970 struct packet_config
*noack_config
;
2971 char *wait_status
= NULL
;
2973 immediate_quit
++; /* Allow user to interrupt it. */
2975 /* Ack any packet which the remote side has already sent. */
2976 serial_write (remote_desc
, "+", 1);
2978 if (interrupt_on_connect
)
2979 send_interrupt_sequence ();
2981 /* The first packet we send to the target is the optional "supported
2982 packets" request. If the target can answer this, it will tell us
2983 which later probes to skip. */
2984 remote_query_supported ();
2986 /* Next, we possibly activate noack mode.
2988 If the QStartNoAckMode packet configuration is set to AUTO,
2989 enable noack mode if the stub reported a wish for it with
2992 If set to TRUE, then enable noack mode even if the stub didn't
2993 report it in qSupported. If the stub doesn't reply OK, the
2994 session ends with an error.
2996 If FALSE, then don't activate noack mode, regardless of what the
2997 stub claimed should be the default with qSupported. */
2999 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3001 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3002 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3003 && noack_config
->support
== PACKET_ENABLE
))
3005 putpkt ("QStartNoAckMode");
3006 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3007 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3011 if (args
->extended_p
)
3013 /* Tell the remote that we are using the extended protocol. */
3015 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3018 /* Next, if the target can specify a description, read it. We do
3019 this before anything involving memory or registers. */
3020 target_find_description ();
3022 /* Next, now that we know something about the target, update the
3023 address spaces in the program spaces. */
3024 update_address_spaces ();
3026 /* On OSs where the list of libraries is global to all
3027 processes, we fetch them early. */
3028 if (gdbarch_has_global_solist (target_gdbarch
))
3029 solib_add (NULL
, args
->from_tty
, args
->target
, auto_solib_add
);
3033 if (!rs
->non_stop_aware
)
3034 error (_("Non-stop mode requested, but remote does not support non-stop"));
3036 putpkt ("QNonStop:1");
3037 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3039 if (strcmp (rs
->buf
, "OK") != 0)
3040 error ("Remote refused setting non-stop mode with: %s", rs
->buf
);
3042 /* Find about threads and processes the stub is already
3043 controlling. We default to adding them in the running state.
3044 The '?' query below will then tell us about which threads are
3046 remote_threads_info (args
->target
);
3048 else if (rs
->non_stop_aware
)
3050 /* Don't assume that the stub can operate in all-stop mode.
3051 Request it explicitely. */
3052 putpkt ("QNonStop:0");
3053 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3055 if (strcmp (rs
->buf
, "OK") != 0)
3056 error ("Remote refused setting all-stop mode with: %s", rs
->buf
);
3059 /* Check whether the target is running now. */
3061 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3065 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3067 if (!args
->extended_p
)
3068 error (_("The target is not running (try extended-remote?)"));
3070 /* We're connected, but not running. Drop out before we
3071 call start_remote. */
3076 /* Save the reply for later. */
3077 wait_status
= alloca (strlen (rs
->buf
) + 1);
3078 strcpy (wait_status
, rs
->buf
);
3081 /* Let the stub know that we want it to return the thread. */
3082 set_continue_thread (minus_one_ptid
);
3084 /* Without this, some commands which require an active target
3085 (such as kill) won't work. This variable serves (at least)
3086 double duty as both the pid of the target process (if it has
3087 such), and as a flag indicating that a target is active.
3088 These functions should be split out into seperate variables,
3089 especially since GDB will someday have a notion of debugging
3090 several processes. */
3091 inferior_ptid
= magic_null_ptid
;
3093 /* Now, if we have thread information, update inferior_ptid. */
3094 inferior_ptid
= remote_current_thread (inferior_ptid
);
3096 remote_add_inferior (ptid_get_pid (inferior_ptid
), -1);
3098 /* Always add the main thread. */
3099 add_thread_silent (inferior_ptid
);
3101 get_offsets (); /* Get text, data & bss offsets. */
3103 /* If we could not find a description using qXfer, and we know
3104 how to do it some other way, try again. This is not
3105 supported for non-stop; it could be, but it is tricky if
3106 there are no stopped threads when we connect. */
3107 if (remote_read_description_p (args
->target
)
3108 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3110 target_clear_description ();
3111 target_find_description ();
3114 /* Use the previously fetched status. */
3115 gdb_assert (wait_status
!= NULL
);
3116 strcpy (rs
->buf
, wait_status
);
3117 rs
->cached_wait_status
= 1;
3120 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
3124 /* Clear WFI global state. Do this before finding about new
3125 threads and inferiors, and setting the current inferior.
3126 Otherwise we would clear the proceed status of the current
3127 inferior when we want its stop_soon state to be preserved
3128 (see notice_new_inferior). */
3129 init_wait_for_inferior ();
3131 /* In non-stop, we will either get an "OK", meaning that there
3132 are no stopped threads at this time; or, a regular stop
3133 reply. In the latter case, there may be more than one thread
3134 stopped --- we pull them all out using the vStopped
3136 if (strcmp (rs
->buf
, "OK") != 0)
3138 struct stop_reply
*stop_reply
;
3139 struct cleanup
*old_chain
;
3141 stop_reply
= stop_reply_xmalloc ();
3142 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3144 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3145 discard_cleanups (old_chain
);
3147 /* get_pending_stop_replies acks this one, and gets the rest
3149 pending_stop_reply
= stop_reply
;
3150 remote_get_pending_stop_replies ();
3152 /* Make sure that threads that were stopped remain
3154 iterate_over_threads (set_stop_requested_callback
, NULL
);
3157 if (target_can_async_p ())
3158 target_async (inferior_event_handler
, 0);
3160 if (thread_count () == 0)
3162 if (!args
->extended_p
)
3163 error (_("The target is not running (try extended-remote?)"));
3165 /* We're connected, but not running. Drop out before we
3166 call start_remote. */
3170 /* Let the stub know that we want it to return the thread. */
3172 /* Force the stub to choose a thread. */
3173 set_general_thread (null_ptid
);
3176 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3177 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3178 error (_("remote didn't report the current thread in non-stop mode"));
3180 get_offsets (); /* Get text, data & bss offsets. */
3182 /* In non-stop mode, any cached wait status will be stored in
3183 the stop reply queue. */
3184 gdb_assert (wait_status
== NULL
);
3186 /* Update the remote on signals to silently pass, or more
3187 importantly, which to not ignore, in case a previous session
3188 had set some different set of signals to be ignored. */
3189 remote_pass_signals ();
3192 /* If we connected to a live target, do some additional setup. */
3193 if (target_has_execution
)
3195 if (exec_bfd
) /* No use without an exec file. */
3196 remote_check_symbols (symfile_objfile
);
3199 /* Possibly the target has been engaged in a trace run started
3200 previously; find out where things are at. */
3201 if (remote_get_trace_status (current_trace_status ()) != -1)
3203 struct uploaded_tp
*uploaded_tps
= NULL
;
3204 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3206 if (current_trace_status ()->running
)
3207 printf_filtered (_("Trace is already running on the target.\n"));
3209 /* Get trace state variables first, they may be checked when
3210 parsing uploaded commands. */
3212 remote_upload_trace_state_variables (&uploaded_tsvs
);
3214 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3216 remote_upload_tracepoints (&uploaded_tps
);
3218 merge_uploaded_tracepoints (&uploaded_tps
);
3221 /* If breakpoints are global, insert them now. */
3222 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3223 && breakpoints_always_inserted_mode ())
3224 insert_breakpoints ();
3227 /* Open a connection to a remote debugger.
3228 NAME is the filename used for communication. */
3231 remote_open (char *name
, int from_tty
)
3233 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3236 /* Open a connection to a remote debugger using the extended
3237 remote gdb protocol. NAME is the filename used for communication. */
3240 extended_remote_open (char *name
, int from_tty
)
3242 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3245 /* Generic code for opening a connection to a remote target. */
3248 init_all_packet_configs (void)
3251 for (i
= 0; i
< PACKET_MAX
; i
++)
3252 update_packet_config (&remote_protocol_packets
[i
]);
3255 /* Symbol look-up. */
3258 remote_check_symbols (struct objfile
*objfile
)
3260 struct remote_state
*rs
= get_remote_state ();
3261 char *msg
, *reply
, *tmp
;
3262 struct minimal_symbol
*sym
;
3265 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3268 /* Make sure the remote is pointing at the right process. */
3269 set_general_process ();
3271 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3272 because we need both at the same time. */
3273 msg
= alloca (get_remote_packet_size ());
3275 /* Invite target to request symbol lookups. */
3277 putpkt ("qSymbol::");
3278 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3279 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3282 while (strncmp (reply
, "qSymbol:", 8) == 0)
3285 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3287 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3289 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3292 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3293 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3295 /* If this is a function address, return the start of code
3296 instead of any data function descriptor. */
3297 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3301 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3302 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3306 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3311 static struct serial
*
3312 remote_serial_open (char *name
)
3314 static int udp_warning
= 0;
3316 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3317 of in ser-tcp.c, because it is the remote protocol assuming that the
3318 serial connection is reliable and not the serial connection promising
3320 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3323 The remote protocol may be unreliable over UDP.\n\
3324 Some events may be lost, rendering further debugging impossible."));
3328 return serial_open (name
);
3331 /* This type describes each known response to the qSupported
3333 struct protocol_feature
3335 /* The name of this protocol feature. */
3338 /* The default for this protocol feature. */
3339 enum packet_support default_support
;
3341 /* The function to call when this feature is reported, or after
3342 qSupported processing if the feature is not supported.
3343 The first argument points to this structure. The second
3344 argument indicates whether the packet requested support be
3345 enabled, disabled, or probed (or the default, if this function
3346 is being called at the end of processing and this feature was
3347 not reported). The third argument may be NULL; if not NULL, it
3348 is a NUL-terminated string taken from the packet following
3349 this feature's name and an equals sign. */
3350 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3353 /* The corresponding packet for this feature. Only used if
3354 FUNC is remote_supported_packet. */
3359 remote_supported_packet (const struct protocol_feature
*feature
,
3360 enum packet_support support
,
3361 const char *argument
)
3365 warning (_("Remote qSupported response supplied an unexpected value for"
3366 " \"%s\"."), feature
->name
);
3370 if (remote_protocol_packets
[feature
->packet
].support
3371 == PACKET_SUPPORT_UNKNOWN
)
3372 remote_protocol_packets
[feature
->packet
].support
= support
;
3376 remote_packet_size (const struct protocol_feature
*feature
,
3377 enum packet_support support
, const char *value
)
3379 struct remote_state
*rs
= get_remote_state ();
3384 if (support
!= PACKET_ENABLE
)
3387 if (value
== NULL
|| *value
== '\0')
3389 warning (_("Remote target reported \"%s\" without a size."),
3395 packet_size
= strtol (value
, &value_end
, 16);
3396 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3398 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3399 feature
->name
, value
);
3403 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3405 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3406 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3407 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3410 /* Record the new maximum packet size. */
3411 rs
->explicit_packet_size
= packet_size
;
3415 remote_multi_process_feature (const struct protocol_feature
*feature
,
3416 enum packet_support support
, const char *value
)
3418 struct remote_state
*rs
= get_remote_state ();
3419 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3423 remote_non_stop_feature (const struct protocol_feature
*feature
,
3424 enum packet_support support
, const char *value
)
3426 struct remote_state
*rs
= get_remote_state ();
3427 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3431 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3432 enum packet_support support
,
3435 struct remote_state
*rs
= get_remote_state ();
3436 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3440 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3441 enum packet_support support
,
3444 struct remote_state
*rs
= get_remote_state ();
3445 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3449 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3450 enum packet_support support
,
3453 struct remote_state
*rs
= get_remote_state ();
3454 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3457 static struct protocol_feature remote_protocol_features
[] = {
3458 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3459 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3460 PACKET_qXfer_auxv
},
3461 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3462 PACKET_qXfer_features
},
3463 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3464 PACKET_qXfer_libraries
},
3465 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3466 PACKET_qXfer_memory_map
},
3467 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3468 PACKET_qXfer_spu_read
},
3469 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3470 PACKET_qXfer_spu_write
},
3471 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3472 PACKET_qXfer_osdata
},
3473 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3474 PACKET_qXfer_threads
},
3475 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3476 PACKET_QPassSignals
},
3477 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3478 PACKET_QStartNoAckMode
},
3479 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3480 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3481 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3482 PACKET_qXfer_siginfo_read
},
3483 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3484 PACKET_qXfer_siginfo_write
},
3485 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3486 PACKET_ConditionalTracepoints
},
3487 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3488 PACKET_FastTracepoints
},
3489 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3491 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3493 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3495 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3496 PACKET_TracepointSource
},
3499 static char *remote_support_xml
;
3501 /* Register string appended to "xmlRegisters=" in qSupported query. */
3504 register_remote_support_xml (const char *xml
)
3506 #if defined(HAVE_LIBEXPAT)
3507 if (remote_support_xml
== NULL
)
3508 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3511 char *copy
= xstrdup (remote_support_xml
+ 13);
3512 char *p
= strtok (copy
, ",");
3516 if (strcmp (p
, xml
) == 0)
3523 while ((p
= strtok (NULL
, ",")) != NULL
);
3526 p
= concat (remote_support_xml
, ",", xml
, (char *) NULL
);
3527 xfree (remote_support_xml
);
3528 remote_support_xml
= p
;
3534 remote_query_supported_append (char *msg
, const char *append
)
3538 char *p
= concat (msg
, ";", append
, (char *) NULL
);
3543 return xstrdup (append
);
3547 remote_query_supported (void)
3549 struct remote_state
*rs
= get_remote_state ();
3552 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3554 /* The packet support flags are handled differently for this packet
3555 than for most others. We treat an error, a disabled packet, and
3556 an empty response identically: any features which must be reported
3557 to be used will be automatically disabled. An empty buffer
3558 accomplishes this, since that is also the representation for a list
3559 containing no features. */
3562 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3565 const char *qsupported
= gdbarch_qsupported (target_gdbarch
);
3568 q
= remote_query_supported_append (q
, "multiprocess+");
3571 q
= remote_query_supported_append (q
, qsupported
);
3573 if (remote_support_xml
)
3574 q
= remote_query_supported_append (q
, remote_support_xml
);
3578 char *p
= concat ("qSupported:", q
, (char *) NULL
);
3584 putpkt ("qSupported");
3586 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3588 /* If an error occured, warn, but do not return - just reset the
3589 buffer to empty and go on to disable features. */
3590 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3593 warning (_("Remote failure reply: %s"), rs
->buf
);
3598 memset (seen
, 0, sizeof (seen
));
3603 enum packet_support is_supported
;
3604 char *p
, *end
, *name_end
, *value
;
3606 /* First separate out this item from the rest of the packet. If
3607 there's another item after this, we overwrite the separator
3608 (terminated strings are much easier to work with). */
3610 end
= strchr (p
, ';');
3613 end
= p
+ strlen (p
);
3623 warning (_("empty item in \"qSupported\" response"));
3628 name_end
= strchr (p
, '=');
3631 /* This is a name=value entry. */
3632 is_supported
= PACKET_ENABLE
;
3633 value
= name_end
+ 1;
3642 is_supported
= PACKET_ENABLE
;
3646 is_supported
= PACKET_DISABLE
;
3650 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3654 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
3660 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3661 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3663 const struct protocol_feature
*feature
;
3666 feature
= &remote_protocol_features
[i
];
3667 feature
->func (feature
, is_supported
, value
);
3672 /* If we increased the packet size, make sure to increase the global
3673 buffer size also. We delay this until after parsing the entire
3674 qSupported packet, because this is the same buffer we were
3676 if (rs
->buf_size
< rs
->explicit_packet_size
)
3678 rs
->buf_size
= rs
->explicit_packet_size
;
3679 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3682 /* Handle the defaults for unmentioned features. */
3683 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3686 const struct protocol_feature
*feature
;
3688 feature
= &remote_protocol_features
[i
];
3689 feature
->func (feature
, feature
->default_support
, NULL
);
3695 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
, int extended_p
)
3697 struct remote_state
*rs
= get_remote_state ();
3700 error (_("To open a remote debug connection, you need to specify what\n"
3701 "serial device is attached to the remote system\n"
3702 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3704 /* See FIXME above. */
3705 if (!target_async_permitted
)
3706 wait_forever_enabled_p
= 1;
3708 /* If we're connected to a running target, target_preopen will kill it.
3709 But if we're connected to a target system with no running process,
3710 then we will still be connected when it returns. Ask this question
3711 first, before target_preopen has a chance to kill anything. */
3712 if (remote_desc
!= NULL
&& !have_inferiors ())
3715 || query (_("Already connected to a remote target. Disconnect? ")))
3718 error (_("Still connected."));
3721 target_preopen (from_tty
);
3723 unpush_target (target
);
3725 /* This time without a query. If we were connected to an
3726 extended-remote target and target_preopen killed the running
3727 process, we may still be connected. If we are starting "target
3728 remote" now, the extended-remote target will not have been
3729 removed by unpush_target. */
3730 if (remote_desc
!= NULL
&& !have_inferiors ())
3733 /* Make sure we send the passed signals list the next time we resume. */
3734 xfree (last_pass_packet
);
3735 last_pass_packet
= NULL
;
3737 remote_fileio_reset ();
3738 reopen_exec_file ();
3741 remote_desc
= remote_serial_open (name
);
3743 perror_with_name (name
);
3745 if (baud_rate
!= -1)
3747 if (serial_setbaudrate (remote_desc
, baud_rate
))
3749 /* The requested speed could not be set. Error out to
3750 top level after closing remote_desc. Take care to
3751 set remote_desc to NULL to avoid closing remote_desc
3753 serial_close (remote_desc
);
3755 perror_with_name (name
);
3759 serial_raw (remote_desc
);
3761 /* If there is something sitting in the buffer we might take it as a
3762 response to a command, which would be bad. */
3763 serial_flush_input (remote_desc
);
3767 puts_filtered ("Remote debugging using ");
3768 puts_filtered (name
);
3769 puts_filtered ("\n");
3771 push_target (target
); /* Switch to using remote target now. */
3773 /* Register extra event sources in the event loop. */
3774 remote_async_inferior_event_token
3775 = create_async_event_handler (remote_async_inferior_event_handler
,
3777 remote_async_get_pending_events_token
3778 = create_async_event_handler (remote_async_get_pending_events_handler
,
3781 /* Reset the target state; these things will be queried either by
3782 remote_query_supported or as they are needed. */
3783 init_all_packet_configs ();
3784 rs
->cached_wait_status
= 0;
3785 rs
->explicit_packet_size
= 0;
3787 rs
->multi_process_aware
= 0;
3788 rs
->extended
= extended_p
;
3789 rs
->non_stop_aware
= 0;
3790 rs
->waiting_for_stop_reply
= 0;
3791 rs
->ctrlc_pending_p
= 0;
3793 general_thread
= not_sent_ptid
;
3794 continue_thread
= not_sent_ptid
;
3796 /* Probe for ability to use "ThreadInfo" query, as required. */
3797 use_threadinfo_query
= 1;
3798 use_threadextra_query
= 1;
3800 if (target_async_permitted
)
3802 /* With this target we start out by owning the terminal. */
3803 remote_async_terminal_ours_p
= 1;
3805 /* FIXME: cagney/1999-09-23: During the initial connection it is
3806 assumed that the target is already ready and able to respond to
3807 requests. Unfortunately remote_start_remote() eventually calls
3808 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
3809 around this. Eventually a mechanism that allows
3810 wait_for_inferior() to expect/get timeouts will be
3812 wait_forever_enabled_p
= 0;
3815 /* First delete any symbols previously loaded from shared libraries. */
3816 no_shared_libraries (NULL
, 0);
3819 init_thread_list ();
3821 /* Start the remote connection. If error() or QUIT, discard this
3822 target (we'd otherwise be in an inconsistent state) and then
3823 propogate the error on up the exception chain. This ensures that
3824 the caller doesn't stumble along blindly assuming that the
3825 function succeeded. The CLI doesn't have this problem but other
3826 UI's, such as MI do.
3828 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
3829 this function should return an error indication letting the
3830 caller restore the previous state. Unfortunately the command
3831 ``target remote'' is directly wired to this function making that
3832 impossible. On a positive note, the CLI side of this problem has
3833 been fixed - the function set_cmd_context() makes it possible for
3834 all the ``target ....'' commands to share a common callback
3835 function. See cli-dump.c. */
3837 struct gdb_exception ex
;
3838 struct start_remote_args args
;
3840 args
.from_tty
= from_tty
;
3841 args
.target
= target
;
3842 args
.extended_p
= extended_p
;
3844 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
3847 /* Pop the partially set up target - unless something else did
3848 already before throwing the exception. */
3849 if (remote_desc
!= NULL
)
3851 if (target_async_permitted
)
3852 wait_forever_enabled_p
= 1;
3853 throw_exception (ex
);
3857 if (target_async_permitted
)
3858 wait_forever_enabled_p
= 1;
3861 /* This takes a program previously attached to and detaches it. After
3862 this is done, GDB can be used to debug some other program. We
3863 better not have left any breakpoints in the target program or it'll
3864 die when it hits one. */
3867 remote_detach_1 (char *args
, int from_tty
, int extended
)
3869 int pid
= ptid_get_pid (inferior_ptid
);
3870 struct remote_state
*rs
= get_remote_state ();
3873 error (_("Argument given to \"detach\" when remotely debugging."));
3875 if (!target_has_execution
)
3876 error (_("No process to detach from."));
3878 /* Tell the remote target to detach. */
3879 if (remote_multi_process_p (rs
))
3880 sprintf (rs
->buf
, "D;%x", pid
);
3882 strcpy (rs
->buf
, "D");
3885 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3887 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
3889 else if (rs
->buf
[0] == '\0')
3890 error (_("Remote doesn't know how to detach"));
3892 error (_("Can't detach process."));
3896 if (remote_multi_process_p (rs
))
3897 printf_filtered (_("Detached from remote %s.\n"),
3898 target_pid_to_str (pid_to_ptid (pid
)));
3902 puts_filtered (_("Detached from remote process.\n"));
3904 puts_filtered (_("Ending remote debugging.\n"));
3908 discard_pending_stop_replies (pid
);
3909 target_mourn_inferior ();
3913 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3915 remote_detach_1 (args
, from_tty
, 0);
3919 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3921 remote_detach_1 (args
, from_tty
, 1);
3924 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
3927 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
3930 error (_("Argument given to \"disconnect\" when remotely debugging."));
3932 /* Make sure we unpush even the extended remote targets; mourn
3933 won't do it. So call remote_mourn_1 directly instead of
3934 target_mourn_inferior. */
3935 remote_mourn_1 (target
);
3938 puts_filtered ("Ending remote debugging.\n");
3941 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
3942 be chatty about it. */
3945 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
3947 struct remote_state
*rs
= get_remote_state ();
3949 char *wait_status
= NULL
;
3951 pid
= parse_pid_to_attach (args
);
3953 /* Remote PID can be freely equal to getpid, do not check it here the same
3954 way as in other targets. */
3956 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3957 error (_("This target does not support attaching to a process"));
3959 sprintf (rs
->buf
, "vAttach;%x", pid
);
3961 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3963 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
3966 printf_unfiltered (_("Attached to %s\n"),
3967 target_pid_to_str (pid_to_ptid (pid
)));
3971 /* Save the reply for later. */
3972 wait_status
= alloca (strlen (rs
->buf
) + 1);
3973 strcpy (wait_status
, rs
->buf
);
3975 else if (strcmp (rs
->buf
, "OK") != 0)
3976 error (_("Attaching to %s failed with: %s"),
3977 target_pid_to_str (pid_to_ptid (pid
)),
3980 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3981 error (_("This target does not support attaching to a process"));
3983 error (_("Attaching to %s failed"),
3984 target_pid_to_str (pid_to_ptid (pid
)));
3986 set_current_inferior (remote_add_inferior (pid
, 1));
3988 inferior_ptid
= pid_to_ptid (pid
);
3992 struct thread_info
*thread
;
3994 /* Get list of threads. */
3995 remote_threads_info (target
);
3997 thread
= first_thread_of_process (pid
);
3999 inferior_ptid
= thread
->ptid
;
4001 inferior_ptid
= pid_to_ptid (pid
);
4003 /* Invalidate our notion of the remote current thread. */
4004 record_currthread (minus_one_ptid
);
4008 /* Now, if we have thread information, update inferior_ptid. */
4009 inferior_ptid
= remote_current_thread (inferior_ptid
);
4011 /* Add the main thread to the thread list. */
4012 add_thread_silent (inferior_ptid
);
4015 /* Next, if the target can specify a description, read it. We do
4016 this before anything involving memory or registers. */
4017 target_find_description ();
4021 /* Use the previously fetched status. */
4022 gdb_assert (wait_status
!= NULL
);
4024 if (target_can_async_p ())
4026 struct stop_reply
*stop_reply
;
4027 struct cleanup
*old_chain
;
4029 stop_reply
= stop_reply_xmalloc ();
4030 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4031 remote_parse_stop_reply (wait_status
, stop_reply
);
4032 discard_cleanups (old_chain
);
4033 push_stop_reply (stop_reply
);
4035 target_async (inferior_event_handler
, 0);
4039 gdb_assert (wait_status
!= NULL
);
4040 strcpy (rs
->buf
, wait_status
);
4041 rs
->cached_wait_status
= 1;
4045 gdb_assert (wait_status
== NULL
);
4049 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4051 extended_remote_attach_1 (ops
, args
, from_tty
);
4054 /* Convert hex digit A to a number. */
4059 if (a
>= '0' && a
<= '9')
4061 else if (a
>= 'a' && a
<= 'f')
4062 return a
- 'a' + 10;
4063 else if (a
>= 'A' && a
<= 'F')
4064 return a
- 'A' + 10;
4066 error (_("Reply contains invalid hex digit %d"), a
);
4070 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4074 for (i
= 0; i
< count
; i
++)
4076 if (hex
[0] == 0 || hex
[1] == 0)
4078 /* Hex string is short, or of uneven length.
4079 Return the count that has been converted so far. */
4082 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4088 /* Convert number NIB to a hex digit. */
4096 return 'a' + nib
- 10;
4100 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4103 /* May use a length, or a nul-terminated string as input. */
4105 count
= strlen ((char *) bin
);
4107 for (i
= 0; i
< count
; i
++)
4109 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4110 *hex
++ = tohex (*bin
++ & 0xf);
4116 /* Check for the availability of vCont. This function should also check
4120 remote_vcont_probe (struct remote_state
*rs
)
4124 strcpy (rs
->buf
, "vCont?");
4126 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4129 /* Make sure that the features we assume are supported. */
4130 if (strncmp (buf
, "vCont", 5) == 0)
4133 int support_s
, support_S
, support_c
, support_C
;
4139 rs
->support_vCont_t
= 0;
4140 while (p
&& *p
== ';')
4143 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4145 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4147 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4149 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4151 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4152 rs
->support_vCont_t
= 1;
4154 p
= strchr (p
, ';');
4157 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4158 BUF will make packet_ok disable the packet. */
4159 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4163 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4166 /* Helper function for building "vCont" resumptions. Write a
4167 resumption to P. ENDP points to one-passed-the-end of the buffer
4168 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4169 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4170 resumed thread should be single-stepped and/or signalled. If PTID
4171 equals minus_one_ptid, then all threads are resumed; if PTID
4172 represents a process, then all threads of the process are resumed;
4173 the thread to be stepped and/or signalled is given in the global
4177 append_resumption (char *p
, char *endp
,
4178 ptid_t ptid
, int step
, enum target_signal siggnal
)
4180 struct remote_state
*rs
= get_remote_state ();
4182 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4183 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4185 p
+= xsnprintf (p
, endp
- p
, ";s");
4186 else if (siggnal
!= TARGET_SIGNAL_0
)
4187 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4189 p
+= xsnprintf (p
, endp
- p
, ";c");
4191 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4195 /* All (-1) threads of process. */
4196 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4198 p
+= xsnprintf (p
, endp
- p
, ":");
4199 p
= write_ptid (p
, endp
, nptid
);
4201 else if (!ptid_equal (ptid
, minus_one_ptid
))
4203 p
+= xsnprintf (p
, endp
- p
, ":");
4204 p
= write_ptid (p
, endp
, ptid
);
4210 /* Resume the remote inferior by using a "vCont" packet. The thread
4211 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4212 resumed thread should be single-stepped and/or signalled. If PTID
4213 equals minus_one_ptid, then all threads are resumed; the thread to
4214 be stepped and/or signalled is given in the global INFERIOR_PTID.
4215 This function returns non-zero iff it resumes the inferior.
4217 This function issues a strict subset of all possible vCont commands at the
4221 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4223 struct remote_state
*rs
= get_remote_state ();
4227 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4228 remote_vcont_probe (rs
);
4230 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4234 endp
= rs
->buf
+ get_remote_packet_size ();
4236 /* If we could generate a wider range of packets, we'd have to worry
4237 about overflowing BUF. Should there be a generic
4238 "multi-part-packet" packet? */
4240 p
+= xsnprintf (p
, endp
- p
, "vCont");
4242 if (ptid_equal (ptid
, magic_null_ptid
))
4244 /* MAGIC_NULL_PTID means that we don't have any active threads,
4245 so we don't have any TID numbers the inferior will
4246 understand. Make sure to only send forms that do not specify
4248 p
= append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4250 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4252 /* Resume all threads (of all processes, or of a single
4253 process), with preference for INFERIOR_PTID. This assumes
4254 inferior_ptid belongs to the set of all threads we are about
4256 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4258 /* Step inferior_ptid, with or without signal. */
4259 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4262 /* And continue others without a signal. */
4263 p
= append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4267 /* Scheduler locking; resume only PTID. */
4268 p
= append_resumption (p
, endp
, ptid
, step
, siggnal
);
4271 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4276 /* In non-stop, the stub replies to vCont with "OK". The stop
4277 reply will be reported asynchronously by means of a `%Stop'
4279 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4280 if (strcmp (rs
->buf
, "OK") != 0)
4281 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4287 /* Tell the remote machine to resume. */
4289 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4291 static int last_sent_step
;
4294 remote_resume (struct target_ops
*ops
,
4295 ptid_t ptid
, int step
, enum target_signal siggnal
)
4297 struct remote_state
*rs
= get_remote_state ();
4300 last_sent_signal
= siggnal
;
4301 last_sent_step
= step
;
4303 /* Update the inferior on signals to silently pass, if they've changed. */
4304 remote_pass_signals ();
4306 /* The vCont packet doesn't need to specify threads via Hc. */
4307 /* No reverse support (yet) for vCont. */
4308 if (execution_direction
!= EXEC_REVERSE
)
4309 if (remote_vcont_resume (ptid
, step
, siggnal
))
4312 /* All other supported resume packets do use Hc, so set the continue
4314 if (ptid_equal (ptid
, minus_one_ptid
))
4315 set_continue_thread (any_thread_ptid
);
4317 set_continue_thread (ptid
);
4320 if (execution_direction
== EXEC_REVERSE
)
4322 /* We don't pass signals to the target in reverse exec mode. */
4323 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4324 warning (" - Can't pass signal %d to target in reverse: ignored.\n",
4328 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4329 error (_("Remote reverse-step not supported."));
4331 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4332 error (_("Remote reverse-continue not supported."));
4334 strcpy (buf
, step
? "bs" : "bc");
4336 else if (siggnal
!= TARGET_SIGNAL_0
)
4338 buf
[0] = step
? 'S' : 'C';
4339 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4340 buf
[2] = tohex (((int) siggnal
) & 0xf);
4344 strcpy (buf
, step
? "s" : "c");
4349 /* We are about to start executing the inferior, let's register it
4350 with the event loop. NOTE: this is the one place where all the
4351 execution commands end up. We could alternatively do this in each
4352 of the execution commands in infcmd.c. */
4353 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4354 into infcmd.c in order to allow inferior function calls to work
4355 NOT asynchronously. */
4356 if (target_can_async_p ())
4357 target_async (inferior_event_handler
, 0);
4359 /* We've just told the target to resume. The remote server will
4360 wait for the inferior to stop, and then send a stop reply. In
4361 the mean time, we can't start another command/query ourselves
4362 because the stub wouldn't be ready to process it. This applies
4363 only to the base all-stop protocol, however. In non-stop (which
4364 only supports vCont), the stub replies with an "OK", and is
4365 immediate able to process further serial input. */
4367 rs
->waiting_for_stop_reply
= 1;
4371 /* Set up the signal handler for SIGINT, while the target is
4372 executing, ovewriting the 'regular' SIGINT signal handler. */
4374 initialize_sigint_signal_handler (void)
4376 signal (SIGINT
, handle_remote_sigint
);
4379 /* Signal handler for SIGINT, while the target is executing. */
4381 handle_remote_sigint (int sig
)
4383 signal (sig
, handle_remote_sigint_twice
);
4384 mark_async_signal_handler_wrapper (sigint_remote_token
);
4387 /* Signal handler for SIGINT, installed after SIGINT has already been
4388 sent once. It will take effect the second time that the user sends
4391 handle_remote_sigint_twice (int sig
)
4393 signal (sig
, handle_remote_sigint
);
4394 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4397 /* Perform the real interruption of the target execution, in response
4400 async_remote_interrupt (gdb_client_data arg
)
4403 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4405 target_stop (inferior_ptid
);
4408 /* Perform interrupt, if the first attempt did not succeed. Just give
4409 up on the target alltogether. */
4411 async_remote_interrupt_twice (gdb_client_data arg
)
4414 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4419 /* Reinstall the usual SIGINT handlers, after the target has
4422 cleanup_sigint_signal_handler (void *dummy
)
4424 signal (SIGINT
, handle_sigint
);
4427 /* Send ^C to target to halt it. Target will respond, and send us a
4429 static void (*ofunc
) (int);
4431 /* The command line interface's stop routine. This function is installed
4432 as a signal handler for SIGINT. The first time a user requests a
4433 stop, we call remote_stop to send a break or ^C. If there is no
4434 response from the target (it didn't stop when the user requested it),
4435 we ask the user if he'd like to detach from the target. */
4437 remote_interrupt (int signo
)
4439 /* If this doesn't work, try more severe steps. */
4440 signal (signo
, remote_interrupt_twice
);
4442 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4445 /* The user typed ^C twice. */
4448 remote_interrupt_twice (int signo
)
4450 signal (signo
, ofunc
);
4451 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4452 signal (signo
, remote_interrupt
);
4455 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4456 thread, all threads of a remote process, or all threads of all
4460 remote_stop_ns (ptid_t ptid
)
4462 struct remote_state
*rs
= get_remote_state ();
4464 char *endp
= rs
->buf
+ get_remote_packet_size ();
4466 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4467 remote_vcont_probe (rs
);
4469 if (!rs
->support_vCont_t
)
4470 error (_("Remote server does not support stopping threads"));
4472 if (ptid_equal (ptid
, minus_one_ptid
)
4473 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4474 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4479 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4481 if (ptid_is_pid (ptid
))
4482 /* All (-1) threads of process. */
4483 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4486 /* Small optimization: if we already have a stop reply for
4487 this thread, no use in telling the stub we want this
4489 if (peek_stop_reply (ptid
))
4495 p
= write_ptid (p
, endp
, nptid
);
4498 /* In non-stop, we get an immediate OK reply. The stop reply will
4499 come in asynchronously by notification. */
4501 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4502 if (strcmp (rs
->buf
, "OK") != 0)
4503 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4506 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4507 remote target. It is undefined which thread of which process
4508 reports the stop. */
4511 remote_stop_as (ptid_t ptid
)
4513 struct remote_state
*rs
= get_remote_state ();
4515 rs
->ctrlc_pending_p
= 1;
4517 /* If the inferior is stopped already, but the core didn't know
4518 about it yet, just ignore the request. The cached wait status
4519 will be collected in remote_wait. */
4520 if (rs
->cached_wait_status
)
4523 /* Send interrupt_sequence to remote target. */
4524 send_interrupt_sequence ();
4527 /* This is the generic stop called via the target vector. When a target
4528 interrupt is requested, either by the command line or the GUI, we
4529 will eventually end up here. */
4532 remote_stop (ptid_t ptid
)
4535 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4538 remote_stop_ns (ptid
);
4540 remote_stop_as (ptid
);
4543 /* Ask the user what to do when an interrupt is received. */
4546 interrupt_query (void)
4548 target_terminal_ours ();
4550 if (target_can_async_p ())
4552 signal (SIGINT
, handle_sigint
);
4553 deprecated_throw_reason (RETURN_QUIT
);
4557 if (query (_("Interrupted while waiting for the program.\n\
4558 Give up (and stop debugging it)? ")))
4561 deprecated_throw_reason (RETURN_QUIT
);
4565 target_terminal_inferior ();
4568 /* Enable/disable target terminal ownership. Most targets can use
4569 terminal groups to control terminal ownership. Remote targets are
4570 different in that explicit transfer of ownership to/from GDB/target
4574 remote_terminal_inferior (void)
4576 if (!target_async_permitted
)
4577 /* Nothing to do. */
4580 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4581 idempotent. The event-loop GDB talking to an asynchronous target
4582 with a synchronous command calls this function from both
4583 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4584 transfer the terminal to the target when it shouldn't this guard
4586 if (!remote_async_terminal_ours_p
)
4588 delete_file_handler (input_fd
);
4589 remote_async_terminal_ours_p
= 0;
4590 initialize_sigint_signal_handler ();
4591 /* NOTE: At this point we could also register our selves as the
4592 recipient of all input. Any characters typed could then be
4593 passed on down to the target. */
4597 remote_terminal_ours (void)
4599 if (!target_async_permitted
)
4600 /* Nothing to do. */
4603 /* See FIXME in remote_terminal_inferior. */
4604 if (remote_async_terminal_ours_p
)
4606 cleanup_sigint_signal_handler (NULL
);
4607 add_file_handler (input_fd
, stdin_event_handler
, 0);
4608 remote_async_terminal_ours_p
= 1;
4612 remote_console_output (char *msg
)
4616 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4619 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4622 fputs_unfiltered (tb
, gdb_stdtarg
);
4624 gdb_flush (gdb_stdtarg
);
4627 typedef struct cached_reg
4630 gdb_byte data
[MAX_REGISTER_SIZE
];
4633 DEF_VEC_O(cached_reg_t
);
4637 struct stop_reply
*next
;
4641 struct target_waitstatus ws
;
4643 VEC(cached_reg_t
) *regcache
;
4645 int stopped_by_watchpoint_p
;
4646 CORE_ADDR watch_data_address
;
4654 /* The list of already fetched and acknowledged stop events. */
4655 static struct stop_reply
*stop_reply_queue
;
4657 static struct stop_reply
*
4658 stop_reply_xmalloc (void)
4660 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
4666 stop_reply_xfree (struct stop_reply
*r
)
4670 VEC_free (cached_reg_t
, r
->regcache
);
4675 /* Discard all pending stop replies of inferior PID. If PID is -1,
4676 discard everything. */
4679 discard_pending_stop_replies (int pid
)
4681 struct stop_reply
*prev
= NULL
, *reply
, *next
;
4683 /* Discard the in-flight notification. */
4684 if (pending_stop_reply
!= NULL
4686 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
4688 stop_reply_xfree (pending_stop_reply
);
4689 pending_stop_reply
= NULL
;
4692 /* Discard the stop replies we have already pulled with
4694 for (reply
= stop_reply_queue
; reply
; reply
= next
)
4698 || ptid_get_pid (reply
->ptid
) == pid
)
4700 if (reply
== stop_reply_queue
)
4701 stop_reply_queue
= reply
->next
;
4703 prev
->next
= reply
->next
;
4705 stop_reply_xfree (reply
);
4712 /* Cleanup wrapper. */
4715 do_stop_reply_xfree (void *arg
)
4717 struct stop_reply
*r
= arg
;
4718 stop_reply_xfree (r
);
4721 /* Look for a queued stop reply belonging to PTID. If one is found,
4722 remove it from the queue, and return it. Returns NULL if none is
4723 found. If there are still queued events left to process, tell the
4724 event loop to get back to target_wait soon. */
4726 static struct stop_reply
*
4727 queued_stop_reply (ptid_t ptid
)
4729 struct stop_reply
*it
;
4730 struct stop_reply
**it_link
;
4732 it
= stop_reply_queue
;
4733 it_link
= &stop_reply_queue
;
4736 if (ptid_match (it
->ptid
, ptid
))
4738 *it_link
= it
->next
;
4743 it_link
= &it
->next
;
4747 if (stop_reply_queue
)
4748 /* There's still at least an event left. */
4749 mark_async_event_handler (remote_async_inferior_event_token
);
4754 /* Push a fully parsed stop reply in the stop reply queue. Since we
4755 know that we now have at least one queued event left to pass to the
4756 core side, tell the event loop to get back to target_wait soon. */
4759 push_stop_reply (struct stop_reply
*new_event
)
4761 struct stop_reply
*event
;
4763 if (stop_reply_queue
)
4765 for (event
= stop_reply_queue
;
4766 event
&& event
->next
;
4767 event
= event
->next
)
4770 event
->next
= new_event
;
4773 stop_reply_queue
= new_event
;
4775 mark_async_event_handler (remote_async_inferior_event_token
);
4778 /* Returns true if we have a stop reply for PTID. */
4781 peek_stop_reply (ptid_t ptid
)
4783 struct stop_reply
*it
;
4785 for (it
= stop_reply_queue
; it
; it
= it
->next
)
4786 if (ptid_equal (ptid
, it
->ptid
))
4788 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
4795 /* Parse the stop reply in BUF. Either the function succeeds, and the
4796 result is stored in EVENT, or throws an error. */
4799 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
4801 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4805 event
->ptid
= null_ptid
;
4806 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
4807 event
->ws
.value
.integer
= 0;
4808 event
->solibs_changed
= 0;
4809 event
->replay_event
= 0;
4810 event
->stopped_by_watchpoint_p
= 0;
4811 event
->regcache
= NULL
;
4816 case 'T': /* Status with PC, SP, FP, ... */
4817 /* Expedited reply, containing Signal, {regno, reg} repeat. */
4818 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
4820 n... = register number
4821 r... = register contents
4824 p
= &buf
[3]; /* after Txx */
4832 /* If the packet contains a register number, save it in
4833 pnum and set p1 to point to the character following it.
4834 Otherwise p1 points to p. */
4836 /* If this packet is an awatch packet, don't parse the 'a'
4837 as a register number. */
4839 if (strncmp (p
, "awatch", strlen("awatch")) != 0
4840 && strncmp (p
, "core", strlen ("core") != 0))
4842 /* Read the ``P'' register number. */
4843 pnum
= strtol (p
, &p_temp
, 16);
4849 if (p1
== p
) /* No register number present here. */
4851 p1
= strchr (p
, ':');
4853 error (_("Malformed packet(a) (missing colon): %s\n\
4856 if (strncmp (p
, "thread", p1
- p
) == 0)
4857 event
->ptid
= read_ptid (++p1
, &p
);
4858 else if ((strncmp (p
, "watch", p1
- p
) == 0)
4859 || (strncmp (p
, "rwatch", p1
- p
) == 0)
4860 || (strncmp (p
, "awatch", p1
- p
) == 0))
4862 event
->stopped_by_watchpoint_p
= 1;
4863 p
= unpack_varlen_hex (++p1
, &addr
);
4864 event
->watch_data_address
= (CORE_ADDR
) addr
;
4866 else if (strncmp (p
, "library", p1
- p
) == 0)
4870 while (*p_temp
&& *p_temp
!= ';')
4873 event
->solibs_changed
= 1;
4876 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
4878 /* NO_HISTORY event.
4879 p1 will indicate "begin" or "end", but
4880 it makes no difference for now, so ignore it. */
4881 event
->replay_event
= 1;
4882 p_temp
= strchr (p1
+ 1, ';');
4886 else if (strncmp (p
, "core", p1
- p
) == 0)
4889 p
= unpack_varlen_hex (++p1
, &c
);
4894 /* Silently skip unknown optional info. */
4895 p_temp
= strchr (p1
+ 1, ';');
4902 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
4903 cached_reg_t cached_reg
;
4908 error (_("Malformed packet(b) (missing colon): %s\n\
4914 error (_("Remote sent bad register number %s: %s\n\
4916 hex_string (pnum
), p
, buf
);
4918 cached_reg
.num
= reg
->regnum
;
4920 fieldsize
= hex2bin (p
, cached_reg
.data
,
4921 register_size (target_gdbarch
,
4924 if (fieldsize
< register_size (target_gdbarch
,
4926 warning (_("Remote reply is too short: %s"), buf
);
4928 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
4932 error (_("Remote register badly formatted: %s\nhere: %s"),
4937 case 'S': /* Old style status, just signal only. */
4938 if (event
->solibs_changed
)
4939 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
4940 else if (event
->replay_event
)
4941 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
4944 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
4945 event
->ws
.value
.sig
= (enum target_signal
)
4946 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
4949 case 'W': /* Target exited. */
4956 /* GDB used to accept only 2 hex chars here. Stubs should
4957 only send more if they detect GDB supports multi-process
4959 p
= unpack_varlen_hex (&buf
[1], &value
);
4963 /* The remote process exited. */
4964 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
4965 event
->ws
.value
.integer
= value
;
4969 /* The remote process exited with a signal. */
4970 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
4971 event
->ws
.value
.sig
= (enum target_signal
) value
;
4974 /* If no process is specified, assume inferior_ptid. */
4975 pid
= ptid_get_pid (inferior_ptid
);
4984 else if (strncmp (p
,
4985 "process:", sizeof ("process:") - 1) == 0)
4988 p
+= sizeof ("process:") - 1;
4989 unpack_varlen_hex (p
, &upid
);
4993 error (_("unknown stop reply packet: %s"), buf
);
4996 error (_("unknown stop reply packet: %s"), buf
);
4997 event
->ptid
= pid_to_ptid (pid
);
5002 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5003 error (_("No process or thread specified in stop reply: %s"), buf
);
5006 /* When the stub wants to tell GDB about a new stop reply, it sends a
5007 stop notification (%Stop). Those can come it at any time, hence,
5008 we have to make sure that any pending putpkt/getpkt sequence we're
5009 making is finished, before querying the stub for more events with
5010 vStopped. E.g., if we started a vStopped sequence immediatelly
5011 upon receiving the %Stop notification, something like this could
5019 1.6) <-- (registers reply to step #1.3)
5021 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5024 To solve this, whenever we parse a %Stop notification sucessfully,
5025 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5026 doing whatever we were doing:
5032 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5033 2.5) <-- (registers reply to step #2.3)
5035 Eventualy after step #2.5, we return to the event loop, which
5036 notices there's an event on the
5037 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5038 associated callback --- the function below. At this point, we're
5039 always safe to start a vStopped sequence. :
5042 2.7) <-- T05 thread:2
5048 remote_get_pending_stop_replies (void)
5050 struct remote_state
*rs
= get_remote_state ();
5052 if (pending_stop_reply
)
5055 putpkt ("vStopped");
5057 /* Now we can rely on it. */
5058 push_stop_reply (pending_stop_reply
);
5059 pending_stop_reply
= NULL
;
5063 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5064 if (strcmp (rs
->buf
, "OK") == 0)
5068 struct cleanup
*old_chain
;
5069 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5071 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5072 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5075 putpkt ("vStopped");
5077 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5079 /* Now we can rely on it. */
5080 discard_cleanups (old_chain
);
5081 push_stop_reply (stop_reply
);
5084 /* We got an unknown stop reply. */
5085 do_cleanups (old_chain
);
5092 /* Called when it is decided that STOP_REPLY holds the info of the
5093 event that is to be returned to the core. This function always
5094 destroys STOP_REPLY. */
5097 process_stop_reply (struct stop_reply
*stop_reply
,
5098 struct target_waitstatus
*status
)
5102 *status
= stop_reply
->ws
;
5103 ptid
= stop_reply
->ptid
;
5105 /* If no thread/process was reported by the stub, assume the current
5107 if (ptid_equal (ptid
, null_ptid
))
5108 ptid
= inferior_ptid
;
5110 if (status
->kind
!= TARGET_WAITKIND_EXITED
5111 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5113 /* Expedited registers. */
5114 if (stop_reply
->regcache
)
5116 struct regcache
*regcache
5117 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5122 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5124 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5125 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5128 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5129 remote_watch_data_address
= stop_reply
->watch_data_address
;
5131 remote_notice_new_inferior (ptid
, 0);
5132 demand_private_info (ptid
)->core
= stop_reply
->core
;
5135 stop_reply_xfree (stop_reply
);
5139 /* The non-stop mode version of target_wait. */
5142 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5144 struct remote_state
*rs
= get_remote_state ();
5145 struct stop_reply
*stop_reply
;
5148 /* If in non-stop mode, get out of getpkt even if a
5149 notification is received. */
5151 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5158 case 'E': /* Error of some sort. */
5159 /* We're out of sync with the target now. Did it continue
5160 or not? We can't tell which thread it was in non-stop,
5161 so just ignore this. */
5162 warning (_("Remote failure reply: %s"), rs
->buf
);
5164 case 'O': /* Console output. */
5165 remote_console_output (rs
->buf
+ 1);
5168 warning (_("Invalid remote reply: %s"), rs
->buf
);
5172 /* Acknowledge a pending stop reply that may have arrived in the
5174 if (pending_stop_reply
!= NULL
)
5175 remote_get_pending_stop_replies ();
5177 /* If indeed we noticed a stop reply, we're done. */
5178 stop_reply
= queued_stop_reply (ptid
);
5179 if (stop_reply
!= NULL
)
5180 return process_stop_reply (stop_reply
, status
);
5182 /* Still no event. If we're just polling for an event, then
5183 return to the event loop. */
5184 if (options
& TARGET_WNOHANG
)
5186 status
->kind
= TARGET_WAITKIND_IGNORE
;
5187 return minus_one_ptid
;
5190 /* Otherwise do a blocking wait. */
5191 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5196 /* Wait until the remote machine stops, then return, storing status in
5197 STATUS just as `wait' would. */
5200 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5202 struct remote_state
*rs
= get_remote_state ();
5203 ptid_t event_ptid
= null_ptid
;
5205 struct stop_reply
*stop_reply
;
5209 status
->kind
= TARGET_WAITKIND_IGNORE
;
5210 status
->value
.integer
= 0;
5212 stop_reply
= queued_stop_reply (ptid
);
5213 if (stop_reply
!= NULL
)
5214 return process_stop_reply (stop_reply
, status
);
5216 if (rs
->cached_wait_status
)
5217 /* Use the cached wait status, but only once. */
5218 rs
->cached_wait_status
= 0;
5223 if (!target_is_async_p ())
5225 ofunc
= signal (SIGINT
, remote_interrupt
);
5226 /* If the user hit C-c before this packet, or between packets,
5227 pretend that it was hit right here. */
5231 remote_interrupt (SIGINT
);
5235 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5236 _never_ wait for ever -> test on target_is_async_p().
5237 However, before we do that we need to ensure that the caller
5238 knows how to take the target into/out of async mode. */
5239 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5240 if (!target_is_async_p ())
5241 signal (SIGINT
, ofunc
);
5246 remote_stopped_by_watchpoint_p
= 0;
5248 /* We got something. */
5249 rs
->waiting_for_stop_reply
= 0;
5251 /* Assume that the target has acknowledged Ctrl-C unless we receive
5252 an 'F' or 'O' packet. */
5253 if (buf
[0] != 'F' && buf
[0] != 'O')
5254 rs
->ctrlc_pending_p
= 0;
5258 case 'E': /* Error of some sort. */
5259 /* We're out of sync with the target now. Did it continue or
5260 not? Not is more likely, so report a stop. */
5261 warning (_("Remote failure reply: %s"), buf
);
5262 status
->kind
= TARGET_WAITKIND_STOPPED
;
5263 status
->value
.sig
= TARGET_SIGNAL_0
;
5265 case 'F': /* File-I/O request. */
5266 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5267 rs
->ctrlc_pending_p
= 0;
5269 case 'T': case 'S': case 'X': case 'W':
5271 struct stop_reply
*stop_reply
;
5272 struct cleanup
*old_chain
;
5274 stop_reply
= stop_reply_xmalloc ();
5275 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5276 remote_parse_stop_reply (buf
, stop_reply
);
5277 discard_cleanups (old_chain
);
5278 event_ptid
= process_stop_reply (stop_reply
, status
);
5281 case 'O': /* Console output. */
5282 remote_console_output (buf
+ 1);
5284 /* The target didn't really stop; keep waiting. */
5285 rs
->waiting_for_stop_reply
= 1;
5289 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5291 /* Zero length reply means that we tried 'S' or 'C' and the
5292 remote system doesn't support it. */
5293 target_terminal_ours_for_output ();
5295 ("Can't send signals to this remote system. %s not sent.\n",
5296 target_signal_to_name (last_sent_signal
));
5297 last_sent_signal
= TARGET_SIGNAL_0
;
5298 target_terminal_inferior ();
5300 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5301 putpkt ((char *) buf
);
5303 /* We just told the target to resume, so a stop reply is in
5305 rs
->waiting_for_stop_reply
= 1;
5308 /* else fallthrough */
5310 warning (_("Invalid remote reply: %s"), buf
);
5312 rs
->waiting_for_stop_reply
= 1;
5316 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5318 /* Nothing interesting happened. If we're doing a non-blocking
5319 poll, we're done. Otherwise, go back to waiting. */
5320 if (options
& TARGET_WNOHANG
)
5321 return minus_one_ptid
;
5325 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5326 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5328 if (!ptid_equal (event_ptid
, null_ptid
))
5329 record_currthread (event_ptid
);
5331 event_ptid
= inferior_ptid
;
5334 /* A process exit. Invalidate our notion of current thread. */
5335 record_currthread (minus_one_ptid
);
5340 /* Wait until the remote machine stops, then return, storing status in
5341 STATUS just as `wait' would. */
5344 remote_wait (struct target_ops
*ops
,
5345 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5350 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5352 event_ptid
= remote_wait_as (ptid
, status
, options
);
5354 if (target_can_async_p ())
5356 /* If there are are events left in the queue tell the event loop
5358 if (stop_reply_queue
)
5359 mark_async_event_handler (remote_async_inferior_event_token
);
5365 /* Fetch a single register using a 'p' packet. */
5368 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5370 struct remote_state
*rs
= get_remote_state ();
5372 char regp
[MAX_REGISTER_SIZE
];
5375 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5378 if (reg
->pnum
== -1)
5383 p
+= hexnumstr (p
, reg
->pnum
);
5386 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5390 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5394 case PACKET_UNKNOWN
:
5397 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5398 gdbarch_register_name (get_regcache_arch (regcache
),
5403 /* If this register is unfetchable, tell the regcache. */
5406 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5410 /* Otherwise, parse and supply the value. */
5416 error (_("fetch_register_using_p: early buf termination"));
5418 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5421 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5425 /* Fetch the registers included in the target's 'g' packet. */
5428 send_g_packet (void)
5430 struct remote_state
*rs
= get_remote_state ();
5433 sprintf (rs
->buf
, "g");
5434 remote_send (&rs
->buf
, &rs
->buf_size
);
5436 /* We can get out of synch in various cases. If the first character
5437 in the buffer is not a hex character, assume that has happened
5438 and try to fetch another packet to read. */
5439 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5440 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5441 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5442 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5445 fprintf_unfiltered (gdb_stdlog
,
5446 "Bad register packet; fetching a new packet\n");
5447 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5450 buf_len
= strlen (rs
->buf
);
5452 /* Sanity check the received packet. */
5453 if (buf_len
% 2 != 0)
5454 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5460 process_g_packet (struct regcache
*regcache
)
5462 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5463 struct remote_state
*rs
= get_remote_state ();
5464 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5469 buf_len
= strlen (rs
->buf
);
5471 /* Further sanity checks, with knowledge of the architecture. */
5472 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5473 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5475 /* Save the size of the packet sent to us by the target. It is used
5476 as a heuristic when determining the max size of packets that the
5477 target can safely receive. */
5478 if (rsa
->actual_register_packet_size
== 0)
5479 rsa
->actual_register_packet_size
= buf_len
;
5481 /* If this is smaller than we guessed the 'g' packet would be,
5482 update our records. A 'g' reply that doesn't include a register's
5483 value implies either that the register is not available, or that
5484 the 'p' packet must be used. */
5485 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5487 rsa
->sizeof_g_packet
= buf_len
/ 2;
5489 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5491 if (rsa
->regs
[i
].pnum
== -1)
5494 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5495 rsa
->regs
[i
].in_g_packet
= 0;
5497 rsa
->regs
[i
].in_g_packet
= 1;
5501 regs
= alloca (rsa
->sizeof_g_packet
);
5503 /* Unimplemented registers read as all bits zero. */
5504 memset (regs
, 0, rsa
->sizeof_g_packet
);
5506 /* Reply describes registers byte by byte, each byte encoded as two
5507 hex characters. Suck them all up, then supply them to the
5508 register cacheing/storage mechanism. */
5511 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5513 if (p
[0] == 0 || p
[1] == 0)
5514 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5515 internal_error (__FILE__
, __LINE__
,
5516 "unexpected end of 'g' packet reply");
5518 if (p
[0] == 'x' && p
[1] == 'x')
5519 regs
[i
] = 0; /* 'x' */
5521 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5527 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5529 struct packet_reg
*r
= &rsa
->regs
[i
];
5532 if (r
->offset
* 2 >= strlen (rs
->buf
))
5533 /* This shouldn't happen - we adjusted in_g_packet above. */
5534 internal_error (__FILE__
, __LINE__
,
5535 "unexpected end of 'g' packet reply");
5536 else if (rs
->buf
[r
->offset
* 2] == 'x')
5538 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5539 /* The register isn't available, mark it as such (at
5540 the same time setting the value to zero). */
5541 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5544 regcache_raw_supply (regcache
, r
->regnum
,
5552 fetch_registers_using_g (struct regcache
*regcache
)
5555 process_g_packet (regcache
);
5559 remote_fetch_registers (struct target_ops
*ops
,
5560 struct regcache
*regcache
, int regnum
)
5562 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5565 set_general_thread (inferior_ptid
);
5569 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5570 gdb_assert (reg
!= NULL
);
5572 /* If this register might be in the 'g' packet, try that first -
5573 we are likely to read more than one register. If this is the
5574 first 'g' packet, we might be overly optimistic about its
5575 contents, so fall back to 'p'. */
5576 if (reg
->in_g_packet
)
5578 fetch_registers_using_g (regcache
);
5579 if (reg
->in_g_packet
)
5583 if (fetch_register_using_p (regcache
, reg
))
5586 /* This register is not available. */
5587 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5592 fetch_registers_using_g (regcache
);
5594 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5595 if (!rsa
->regs
[i
].in_g_packet
)
5596 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5598 /* This register is not available. */
5599 regcache_raw_supply (regcache
, i
, NULL
);
5603 /* Prepare to store registers. Since we may send them all (using a
5604 'G' request), we have to read out the ones we don't want to change
5608 remote_prepare_to_store (struct regcache
*regcache
)
5610 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5612 gdb_byte buf
[MAX_REGISTER_SIZE
];
5614 /* Make sure the entire registers array is valid. */
5615 switch (remote_protocol_packets
[PACKET_P
].support
)
5617 case PACKET_DISABLE
:
5618 case PACKET_SUPPORT_UNKNOWN
:
5619 /* Make sure all the necessary registers are cached. */
5620 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5621 if (rsa
->regs
[i
].in_g_packet
)
5622 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5629 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5630 packet was not recognized. */
5633 store_register_using_P (const struct regcache
*regcache
,
5634 struct packet_reg
*reg
)
5636 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5637 struct remote_state
*rs
= get_remote_state ();
5638 /* Try storing a single register. */
5639 char *buf
= rs
->buf
;
5640 gdb_byte regp
[MAX_REGISTER_SIZE
];
5643 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
5646 if (reg
->pnum
== -1)
5649 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
5650 p
= buf
+ strlen (buf
);
5651 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
5652 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
5654 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5656 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
5661 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5662 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
5663 case PACKET_UNKNOWN
:
5666 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
5670 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5671 contents of the register cache buffer. FIXME: ignores errors. */
5674 store_registers_using_G (const struct regcache
*regcache
)
5676 struct remote_state
*rs
= get_remote_state ();
5677 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5681 /* Extract all the registers in the regcache copying them into a
5685 regs
= alloca (rsa
->sizeof_g_packet
);
5686 memset (regs
, 0, rsa
->sizeof_g_packet
);
5687 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5689 struct packet_reg
*r
= &rsa
->regs
[i
];
5691 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
5695 /* Command describes registers byte by byte,
5696 each byte encoded as two hex characters. */
5699 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5701 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
5703 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5704 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
5705 error (_("Could not write registers; remote failure reply '%s'"),
5709 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
5710 of the register cache buffer. FIXME: ignores errors. */
5713 remote_store_registers (struct target_ops
*ops
,
5714 struct regcache
*regcache
, int regnum
)
5716 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5719 set_general_thread (inferior_ptid
);
5723 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5724 gdb_assert (reg
!= NULL
);
5726 /* Always prefer to store registers using the 'P' packet if
5727 possible; we often change only a small number of registers.
5728 Sometimes we change a larger number; we'd need help from a
5729 higher layer to know to use 'G'. */
5730 if (store_register_using_P (regcache
, reg
))
5733 /* For now, don't complain if we have no way to write the
5734 register. GDB loses track of unavailable registers too
5735 easily. Some day, this may be an error. We don't have
5736 any way to read the register, either... */
5737 if (!reg
->in_g_packet
)
5740 store_registers_using_G (regcache
);
5744 store_registers_using_G (regcache
);
5746 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5747 if (!rsa
->regs
[i
].in_g_packet
)
5748 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
5749 /* See above for why we do not issue an error here. */
5754 /* Return the number of hex digits in num. */
5757 hexnumlen (ULONGEST num
)
5761 for (i
= 0; num
!= 0; i
++)
5767 /* Set BUF to the minimum number of hex digits representing NUM. */
5770 hexnumstr (char *buf
, ULONGEST num
)
5772 int len
= hexnumlen (num
);
5773 return hexnumnstr (buf
, num
, len
);
5777 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
5780 hexnumnstr (char *buf
, ULONGEST num
, int width
)
5786 for (i
= width
- 1; i
>= 0; i
--)
5788 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
5795 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
5798 remote_address_masked (CORE_ADDR addr
)
5800 int address_size
= remote_address_size
;
5801 /* If "remoteaddresssize" was not set, default to target address size. */
5803 address_size
= gdbarch_addr_bit (target_gdbarch
);
5805 if (address_size
> 0
5806 && address_size
< (sizeof (ULONGEST
) * 8))
5808 /* Only create a mask when that mask can safely be constructed
5809 in a ULONGEST variable. */
5811 mask
= (mask
<< address_size
) - 1;
5817 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
5818 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
5819 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
5820 (which may be more than *OUT_LEN due to escape characters). The
5821 total number of bytes in the output buffer will be at most
5825 remote_escape_output (const gdb_byte
*buffer
, int len
,
5826 gdb_byte
*out_buf
, int *out_len
,
5829 int input_index
, output_index
;
5832 for (input_index
= 0; input_index
< len
; input_index
++)
5834 gdb_byte b
= buffer
[input_index
];
5836 if (b
== '$' || b
== '#' || b
== '}')
5838 /* These must be escaped. */
5839 if (output_index
+ 2 > out_maxlen
)
5841 out_buf
[output_index
++] = '}';
5842 out_buf
[output_index
++] = b
^ 0x20;
5846 if (output_index
+ 1 > out_maxlen
)
5848 out_buf
[output_index
++] = b
;
5852 *out_len
= input_index
;
5853 return output_index
;
5856 /* Convert BUFFER, escaped data LEN bytes long, into binary data
5857 in OUT_BUF. Return the number of bytes written to OUT_BUF.
5858 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
5860 This function reverses remote_escape_output. It allows more
5861 escaped characters than that function does, in particular because
5862 '*' must be escaped to avoid the run-length encoding processing
5863 in reading packets. */
5866 remote_unescape_input (const gdb_byte
*buffer
, int len
,
5867 gdb_byte
*out_buf
, int out_maxlen
)
5869 int input_index
, output_index
;
5874 for (input_index
= 0; input_index
< len
; input_index
++)
5876 gdb_byte b
= buffer
[input_index
];
5878 if (output_index
+ 1 > out_maxlen
)
5880 warning (_("Received too much data from remote target;"
5881 " ignoring overflow."));
5882 return output_index
;
5887 out_buf
[output_index
++] = b
^ 0x20;
5893 out_buf
[output_index
++] = b
;
5897 error (_("Unmatched escape character in target response."));
5899 return output_index
;
5902 /* Determine whether the remote target supports binary downloading.
5903 This is accomplished by sending a no-op memory write of zero length
5904 to the target at the specified address. It does not suffice to send
5905 the whole packet, since many stubs strip the eighth bit and
5906 subsequently compute a wrong checksum, which causes real havoc with
5909 NOTE: This can still lose if the serial line is not eight-bit
5910 clean. In cases like this, the user should clear "remote
5914 check_binary_download (CORE_ADDR addr
)
5916 struct remote_state
*rs
= get_remote_state ();
5918 switch (remote_protocol_packets
[PACKET_X
].support
)
5920 case PACKET_DISABLE
:
5924 case PACKET_SUPPORT_UNKNOWN
:
5930 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5932 p
+= hexnumstr (p
, (ULONGEST
) 0);
5936 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
5937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5939 if (rs
->buf
[0] == '\0')
5942 fprintf_unfiltered (gdb_stdlog
,
5943 "binary downloading NOT suppported by target\n");
5944 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
5949 fprintf_unfiltered (gdb_stdlog
,
5950 "binary downloading suppported by target\n");
5951 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
5958 /* Write memory data directly to the remote machine.
5959 This does not inform the data cache; the data cache uses this.
5960 HEADER is the starting part of the packet.
5961 MEMADDR is the address in the remote memory space.
5962 MYADDR is the address of the buffer in our space.
5963 LEN is the number of bytes.
5964 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
5965 should send data as binary ('X'), or hex-encoded ('M').
5967 The function creates packet of the form
5968 <HEADER><ADDRESS>,<LENGTH>:<DATA>
5970 where encoding of <DATA> is termined by PACKET_FORMAT.
5972 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
5975 Returns the number of bytes transferred, or 0 (setting errno) for
5976 error. Only transfer a single packet. */
5979 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
5980 const gdb_byte
*myaddr
, int len
,
5981 char packet_format
, int use_length
)
5983 struct remote_state
*rs
= get_remote_state ();
5993 if (packet_format
!= 'X' && packet_format
!= 'M')
5994 internal_error (__FILE__
, __LINE__
,
5995 "remote_write_bytes_aux: bad packet format");
6000 payload_size
= get_memory_write_packet_size ();
6002 /* The packet buffer will be large enough for the payload;
6003 get_memory_packet_size ensures this. */
6006 /* Compute the size of the actual payload by subtracting out the
6007 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
6009 payload_size
-= strlen ("$,:#NN");
6011 /* The comma won't be used. */
6013 header_length
= strlen (header
);
6014 payload_size
-= header_length
;
6015 payload_size
-= hexnumlen (memaddr
);
6017 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6019 strcat (rs
->buf
, header
);
6020 p
= rs
->buf
+ strlen (header
);
6022 /* Compute a best guess of the number of bytes actually transfered. */
6023 if (packet_format
== 'X')
6025 /* Best guess at number of bytes that will fit. */
6026 todo
= min (len
, payload_size
);
6028 payload_size
-= hexnumlen (todo
);
6029 todo
= min (todo
, payload_size
);
6033 /* Num bytes that will fit. */
6034 todo
= min (len
, payload_size
/ 2);
6036 payload_size
-= hexnumlen (todo
);
6037 todo
= min (todo
, payload_size
/ 2);
6041 internal_error (__FILE__
, __LINE__
,
6042 _("minumum packet size too small to write data"));
6044 /* If we already need another packet, then try to align the end
6045 of this packet to a useful boundary. */
6046 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6047 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6049 /* Append "<memaddr>". */
6050 memaddr
= remote_address_masked (memaddr
);
6051 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6058 /* Append <len>. Retain the location/size of <len>. It may need to
6059 be adjusted once the packet body has been created. */
6061 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6069 /* Append the packet body. */
6070 if (packet_format
== 'X')
6072 /* Binary mode. Send target system values byte by byte, in
6073 increasing byte addresses. Only escape certain critical
6075 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6078 /* If not all TODO bytes fit, then we'll need another packet. Make
6079 a second try to keep the end of the packet aligned. Don't do
6080 this if the packet is tiny. */
6081 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6085 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6087 if (new_nr_bytes
!= nr_bytes
)
6088 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6093 p
+= payload_length
;
6094 if (use_length
&& nr_bytes
< todo
)
6096 /* Escape chars have filled up the buffer prematurely,
6097 and we have actually sent fewer bytes than planned.
6098 Fix-up the length field of the packet. Use the same
6099 number of characters as before. */
6100 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6101 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6106 /* Normal mode: Send target system values byte by byte, in
6107 increasing byte addresses. Each byte is encoded as a two hex
6109 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6113 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6114 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6116 if (rs
->buf
[0] == 'E')
6118 /* There is no correspondance between what the remote protocol
6119 uses for errors and errno codes. We would like a cleaner way
6120 of representing errors (big enough to include errno codes,
6121 bfd_error codes, and others). But for now just return EIO. */
6126 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6127 fewer bytes than we'd planned. */
6131 /* Write memory data directly to the remote machine.
6132 This does not inform the data cache; the data cache uses this.
6133 MEMADDR is the address in the remote memory space.
6134 MYADDR is the address of the buffer in our space.
6135 LEN is the number of bytes.
6137 Returns number of bytes transferred, or 0 (setting errno) for
6138 error. Only transfer a single packet. */
6141 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6143 char *packet_format
= 0;
6145 /* Check whether the target supports binary download. */
6146 check_binary_download (memaddr
);
6148 switch (remote_protocol_packets
[PACKET_X
].support
)
6151 packet_format
= "X";
6153 case PACKET_DISABLE
:
6154 packet_format
= "M";
6156 case PACKET_SUPPORT_UNKNOWN
:
6157 internal_error (__FILE__
, __LINE__
,
6158 _("remote_write_bytes: bad internal state"));
6160 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6163 return remote_write_bytes_aux (packet_format
,
6164 memaddr
, myaddr
, len
, packet_format
[0], 1);
6167 /* Read memory data directly from the remote machine.
6168 This does not use the data cache; the data cache uses this.
6169 MEMADDR is the address in the remote memory space.
6170 MYADDR is the address of the buffer in our space.
6171 LEN is the number of bytes.
6173 Returns number of bytes transferred, or 0 for error. */
6175 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
6176 remote targets) shouldn't attempt to read the entire buffer.
6177 Instead it should read a single packet worth of data and then
6178 return the byte size of that packet to the caller. The caller (its
6179 caller and its callers caller ;-) already contains code for
6180 handling partial reads. */
6183 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6185 struct remote_state
*rs
= get_remote_state ();
6186 int max_buf_size
; /* Max size of packet output buffer. */
6192 max_buf_size
= get_memory_read_packet_size ();
6193 /* The packet buffer will be large enough for the payload;
6194 get_memory_packet_size ensures this. */
6203 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
6205 /* construct "m"<memaddr>","<len>" */
6206 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
6207 memaddr
= remote_address_masked (memaddr
);
6210 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6212 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6216 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6218 if (rs
->buf
[0] == 'E'
6219 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6220 && rs
->buf
[3] == '\0')
6222 /* There is no correspondance between what the remote
6223 protocol uses for errors and errno codes. We would like
6224 a cleaner way of representing errors (big enough to
6225 include errno codes, bfd_error codes, and others). But
6226 for now just return EIO. */
6231 /* Reply describes memory byte by byte,
6232 each byte encoded as two hex characters. */
6235 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
6237 /* Reply is short. This means that we were able to read
6238 only part of what we wanted to. */
6239 return i
+ (origlen
- len
);
6249 /* Remote notification handler. */
6252 handle_notification (char *buf
, size_t length
)
6254 if (strncmp (buf
, "Stop:", 5) == 0)
6256 if (pending_stop_reply
)
6258 /* We've already parsed the in-flight stop-reply, but the
6259 stub for some reason thought we didn't, possibly due to
6260 timeout on its side. Just ignore it. */
6262 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6266 struct cleanup
*old_chain
;
6267 struct stop_reply
*reply
= stop_reply_xmalloc ();
6268 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6270 remote_parse_stop_reply (buf
+ 5, reply
);
6272 discard_cleanups (old_chain
);
6274 /* Be careful to only set it after parsing, since an error
6275 may be thrown then. */
6276 pending_stop_reply
= reply
;
6278 /* Notify the event loop there's a stop reply to acknowledge
6279 and that there may be more events to fetch. */
6280 mark_async_event_handler (remote_async_get_pending_events_token
);
6283 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6287 /* We ignore notifications we don't recognize, for compatibility
6288 with newer stubs. */
6293 /* Read or write LEN bytes from inferior memory at MEMADDR,
6294 transferring to or from debugger address BUFFER. Write to inferior
6295 if SHOULD_WRITE is nonzero. Returns length of data written or
6296 read; 0 for error. TARGET is unused. */
6299 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6300 int should_write
, struct mem_attrib
*attrib
,
6301 struct target_ops
*target
)
6305 set_general_thread (inferior_ptid
);
6308 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6310 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6315 /* Sends a packet with content determined by the printf format string
6316 FORMAT and the remaining arguments, then gets the reply. Returns
6317 whether the packet was a success, a failure, or unknown. */
6319 static enum packet_result
6320 remote_send_printf (const char *format
, ...)
6322 struct remote_state
*rs
= get_remote_state ();
6323 int max_size
= get_remote_packet_size ();
6326 va_start (ap
, format
);
6329 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6330 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
6332 if (putpkt (rs
->buf
) < 0)
6333 error (_("Communication problem with target."));
6336 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6338 return packet_check_result (rs
->buf
);
6342 restore_remote_timeout (void *p
)
6344 int value
= *(int *)p
;
6345 remote_timeout
= value
;
6348 /* Flash writing can take quite some time. We'll set
6349 effectively infinite timeout for flash operations.
6350 In future, we'll need to decide on a better approach. */
6351 static const int remote_flash_timeout
= 1000;
6354 remote_flash_erase (struct target_ops
*ops
,
6355 ULONGEST address
, LONGEST length
)
6357 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6358 int saved_remote_timeout
= remote_timeout
;
6359 enum packet_result ret
;
6361 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6362 &saved_remote_timeout
);
6363 remote_timeout
= remote_flash_timeout
;
6365 ret
= remote_send_printf ("vFlashErase:%s,%s",
6366 phex (address
, addr_size
),
6370 case PACKET_UNKNOWN
:
6371 error (_("Remote target does not support flash erase"));
6373 error (_("Error erasing flash with vFlashErase packet"));
6378 do_cleanups (back_to
);
6382 remote_flash_write (struct target_ops
*ops
,
6383 ULONGEST address
, LONGEST length
,
6384 const gdb_byte
*data
)
6386 int saved_remote_timeout
= remote_timeout
;
6388 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6389 &saved_remote_timeout
);
6391 remote_timeout
= remote_flash_timeout
;
6392 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6393 do_cleanups (back_to
);
6399 remote_flash_done (struct target_ops
*ops
)
6401 int saved_remote_timeout
= remote_timeout
;
6403 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6404 &saved_remote_timeout
);
6406 remote_timeout
= remote_flash_timeout
;
6407 ret
= remote_send_printf ("vFlashDone");
6408 do_cleanups (back_to
);
6412 case PACKET_UNKNOWN
:
6413 error (_("Remote target does not support vFlashDone"));
6415 error (_("Error finishing flash operation"));
6422 remote_files_info (struct target_ops
*ignore
)
6424 puts_filtered ("Debugging a target over a serial line.\n");
6427 /* Stuff for dealing with the packets which are part of this protocol.
6428 See comment at top of file for details. */
6430 /* Read a single character from the remote end. */
6433 readchar (int timeout
)
6437 ch
= serial_readchar (remote_desc
, timeout
);
6442 switch ((enum serial_rc
) ch
)
6446 error (_("Remote connection closed"));
6449 perror_with_name (_("Remote communication error"));
6451 case SERIAL_TIMEOUT
:
6457 /* Send the command in *BUF to the remote machine, and read the reply
6458 into *BUF. Report an error if we get an error reply. Resize
6459 *BUF using xrealloc if necessary to hold the result, and update
6463 remote_send (char **buf
,
6467 getpkt (buf
, sizeof_buf
, 0);
6469 if ((*buf
)[0] == 'E')
6470 error (_("Remote failure reply: %s"), *buf
);
6473 /* Return a pointer to an xmalloc'ed string representing an escaped
6474 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6475 etc. The caller is responsible for releasing the returned
6479 escape_buffer (const char *buf
, int n
)
6481 struct cleanup
*old_chain
;
6482 struct ui_file
*stb
;
6485 stb
= mem_fileopen ();
6486 old_chain
= make_cleanup_ui_file_delete (stb
);
6488 fputstrn_unfiltered (buf
, n
, 0, stb
);
6489 str
= ui_file_xstrdup (stb
, NULL
);
6490 do_cleanups (old_chain
);
6494 /* Display a null-terminated packet on stdout, for debugging, using C
6498 print_packet (char *buf
)
6500 puts_filtered ("\"");
6501 fputstr_filtered (buf
, '"', gdb_stdout
);
6502 puts_filtered ("\"");
6508 return putpkt_binary (buf
, strlen (buf
));
6511 /* Send a packet to the remote machine, with error checking. The data
6512 of the packet is in BUF. The string in BUF can be at most
6513 get_remote_packet_size () - 5 to account for the $, # and checksum,
6514 and for a possible /0 if we are debugging (remote_debug) and want
6515 to print the sent packet as a string. */
6518 putpkt_binary (char *buf
, int cnt
)
6520 struct remote_state
*rs
= get_remote_state ();
6522 unsigned char csum
= 0;
6523 char *buf2
= alloca (cnt
+ 6);
6529 /* Catch cases like trying to read memory or listing threads while
6530 we're waiting for a stop reply. The remote server wouldn't be
6531 ready to handle this request, so we'd hang and timeout. We don't
6532 have to worry about this in synchronous mode, because in that
6533 case it's not possible to issue a command while the target is
6534 running. This is not a problem in non-stop mode, because in that
6535 case, the stub is always ready to process serial input. */
6536 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6537 error (_("Cannot execute this command while the target is running."));
6539 /* We're sending out a new packet. Make sure we don't look at a
6540 stale cached response. */
6541 rs
->cached_wait_status
= 0;
6543 /* Copy the packet into buffer BUF2, encapsulating it
6544 and giving it a checksum. */
6549 for (i
= 0; i
< cnt
; i
++)
6555 *p
++ = tohex ((csum
>> 4) & 0xf);
6556 *p
++ = tohex (csum
& 0xf);
6558 /* Send it over and over until we get a positive ack. */
6562 int started_error_output
= 0;
6566 struct cleanup
*old_chain
;
6570 str
= escape_buffer (buf2
, p
- buf2
);
6571 old_chain
= make_cleanup (xfree
, str
);
6572 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6573 gdb_flush (gdb_stdlog
);
6574 do_cleanups (old_chain
);
6576 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6577 perror_with_name (_("putpkt: write failed"));
6579 /* If this is a no acks version of the remote protocol, send the
6580 packet and move on. */
6584 /* Read until either a timeout occurs (-2) or '+' is read.
6585 Handle any notification that arrives in the mean time. */
6588 ch
= readchar (remote_timeout
);
6596 case SERIAL_TIMEOUT
:
6599 if (started_error_output
)
6601 putchar_unfiltered ('\n');
6602 started_error_output
= 0;
6611 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6615 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6616 case SERIAL_TIMEOUT
:
6620 break; /* Retransmit buffer. */
6624 fprintf_unfiltered (gdb_stdlog
,
6625 "Packet instead of Ack, ignoring it\n");
6626 /* It's probably an old response sent because an ACK
6627 was lost. Gobble up the packet and ack it so it
6628 doesn't get retransmitted when we resend this
6631 serial_write (remote_desc
, "+", 1);
6632 continue; /* Now, go look for +. */
6639 /* If we got a notification, handle it, and go back to looking
6641 /* We've found the start of a notification. Now
6642 collect the data. */
6643 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6648 struct cleanup
*old_chain
;
6651 str
= escape_buffer (rs
->buf
, val
);
6652 old_chain
= make_cleanup (xfree
, str
);
6653 fprintf_unfiltered (gdb_stdlog
,
6654 " Notification received: %s\n",
6656 do_cleanups (old_chain
);
6658 handle_notification (rs
->buf
, val
);
6659 /* We're in sync now, rewait for the ack. */
6666 if (!started_error_output
)
6668 started_error_output
= 1;
6669 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6671 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6672 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6681 if (!started_error_output
)
6683 started_error_output
= 1;
6684 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6686 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6690 break; /* Here to retransmit. */
6694 /* This is wrong. If doing a long backtrace, the user should be
6695 able to get out next time we call QUIT, without anything as
6696 violent as interrupt_query. If we want to provide a way out of
6697 here without getting to the next QUIT, it should be based on
6698 hitting ^C twice as in remote_wait. */
6709 /* Come here after finding the start of a frame when we expected an
6710 ack. Do our best to discard the rest of this packet. */
6719 c
= readchar (remote_timeout
);
6722 case SERIAL_TIMEOUT
:
6723 /* Nothing we can do. */
6726 /* Discard the two bytes of checksum and stop. */
6727 c
= readchar (remote_timeout
);
6729 c
= readchar (remote_timeout
);
6732 case '*': /* Run length encoding. */
6733 /* Discard the repeat count. */
6734 c
= readchar (remote_timeout
);
6739 /* A regular character. */
6745 /* Come here after finding the start of the frame. Collect the rest
6746 into *BUF, verifying the checksum, length, and handling run-length
6747 compression. NUL terminate the buffer. If there is not enough room,
6748 expand *BUF using xrealloc.
6750 Returns -1 on error, number of characters in buffer (ignoring the
6751 trailing NULL) on success. (could be extended to return one of the
6752 SERIAL status indications). */
6755 read_frame (char **buf_p
,
6762 struct remote_state
*rs
= get_remote_state ();
6769 c
= readchar (remote_timeout
);
6772 case SERIAL_TIMEOUT
:
6774 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
6778 fputs_filtered ("Saw new packet start in middle of old one\n",
6780 return -1; /* Start a new packet, count retries. */
6783 unsigned char pktcsum
;
6789 check_0
= readchar (remote_timeout
);
6791 check_1
= readchar (remote_timeout
);
6793 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
6796 fputs_filtered ("Timeout in checksum, retrying\n",
6800 else if (check_0
< 0 || check_1
< 0)
6803 fputs_filtered ("Communication error in checksum\n",
6808 /* Don't recompute the checksum; with no ack packets we
6809 don't have any way to indicate a packet retransmission
6814 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
6815 if (csum
== pktcsum
)
6820 struct cleanup
*old_chain
;
6823 str
= escape_buffer (buf
, bc
);
6824 old_chain
= make_cleanup (xfree
, str
);
6825 fprintf_unfiltered (gdb_stdlog
,
6827 Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
6828 pktcsum
, csum
, str
);
6829 do_cleanups (old_chain
);
6831 /* Number of characters in buffer ignoring trailing
6835 case '*': /* Run length encoding. */
6840 c
= readchar (remote_timeout
);
6842 repeat
= c
- ' ' + 3; /* Compute repeat count. */
6844 /* The character before ``*'' is repeated. */
6846 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
6848 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
6850 /* Make some more room in the buffer. */
6851 *sizeof_buf
+= repeat
;
6852 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6856 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
6862 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
6866 if (bc
>= *sizeof_buf
- 1)
6868 /* Make some more room in the buffer. */
6870 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6881 /* Read a packet from the remote machine, with error checking, and
6882 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6883 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6884 rather than timing out; this is used (in synchronous mode) to wait
6885 for a target that is is executing user code to stop. */
6886 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
6887 don't have to change all the calls to getpkt to deal with the
6888 return value, because at the moment I don't know what the right
6889 thing to do it for those. */
6897 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
6901 /* Read a packet from the remote machine, with error checking, and
6902 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6903 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6904 rather than timing out; this is used (in synchronous mode) to wait
6905 for a target that is is executing user code to stop. If FOREVER ==
6906 0, this function is allowed to time out gracefully and return an
6907 indication of this to the caller. Otherwise return the number of
6908 bytes read. If EXPECTING_NOTIF, consider receiving a notification
6909 enough reason to return to the caller. */
6912 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
6913 int expecting_notif
)
6915 struct remote_state
*rs
= get_remote_state ();
6921 /* We're reading a new response. Make sure we don't look at a
6922 previously cached response. */
6923 rs
->cached_wait_status
= 0;
6925 strcpy (*buf
, "timeout");
6928 timeout
= watchdog
> 0 ? watchdog
: -1;
6929 else if (expecting_notif
)
6930 timeout
= 0; /* There should already be a char in the buffer. If
6933 timeout
= remote_timeout
;
6937 /* Process any number of notifications, and then return when
6941 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
6943 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
6945 /* This can loop forever if the remote side sends us
6946 characters continuously, but if it pauses, we'll get
6947 SERIAL_TIMEOUT from readchar because of timeout. Then
6948 we'll count that as a retry.
6950 Note that even when forever is set, we will only wait
6951 forever prior to the start of a packet. After that, we
6952 expect characters to arrive at a brisk pace. They should
6953 show up within remote_timeout intervals. */
6955 c
= readchar (timeout
);
6956 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
6958 if (c
== SERIAL_TIMEOUT
)
6960 if (expecting_notif
)
6961 return -1; /* Don't complain, it's normal to not get
6962 anything in this case. */
6964 if (forever
) /* Watchdog went off? Kill the target. */
6968 error (_("Watchdog timeout has expired. Target detached."));
6971 fputs_filtered ("Timed out.\n", gdb_stdlog
);
6975 /* We've found the start of a packet or notification.
6976 Now collect the data. */
6977 val
= read_frame (buf
, sizeof_buf
);
6982 serial_write (remote_desc
, "-", 1);
6985 if (tries
> MAX_TRIES
)
6987 /* We have tried hard enough, and just can't receive the
6988 packet/notification. Give up. */
6989 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
6991 /* Skip the ack char if we're in no-ack mode. */
6992 if (!rs
->noack_mode
)
6993 serial_write (remote_desc
, "+", 1);
6997 /* If we got an ordinary packet, return that to our caller. */
7002 struct cleanup
*old_chain
;
7005 str
= escape_buffer (*buf
, val
);
7006 old_chain
= make_cleanup (xfree
, str
);
7007 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7008 do_cleanups (old_chain
);
7011 /* Skip the ack char if we're in no-ack mode. */
7012 if (!rs
->noack_mode
)
7013 serial_write (remote_desc
, "+", 1);
7017 /* If we got a notification, handle it, and go back to looking
7021 gdb_assert (c
== '%');
7025 struct cleanup
*old_chain
;
7028 str
= escape_buffer (*buf
, val
);
7029 old_chain
= make_cleanup (xfree
, str
);
7030 fprintf_unfiltered (gdb_stdlog
,
7031 " Notification received: %s\n",
7033 do_cleanups (old_chain
);
7036 handle_notification (*buf
, val
);
7038 /* Notifications require no acknowledgement. */
7040 if (expecting_notif
)
7047 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7049 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7053 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7055 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7060 remote_kill (struct target_ops
*ops
)
7062 /* Use catch_errors so the user can quit from gdb even when we
7063 aren't on speaking terms with the remote system. */
7064 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
7066 /* Don't wait for it to die. I'm not really sure it matters whether
7067 we do or not. For the existing stubs, kill is a noop. */
7068 target_mourn_inferior ();
7072 remote_vkill (int pid
, struct remote_state
*rs
)
7074 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7077 /* Tell the remote target to detach. */
7078 sprintf (rs
->buf
, "vKill;%x", pid
);
7080 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7082 if (packet_ok (rs
->buf
,
7083 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7085 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7092 extended_remote_kill (struct target_ops
*ops
)
7095 int pid
= ptid_get_pid (inferior_ptid
);
7096 struct remote_state
*rs
= get_remote_state ();
7098 res
= remote_vkill (pid
, rs
);
7099 if (res
== -1 && !remote_multi_process_p (rs
))
7101 /* Don't try 'k' on a multi-process aware stub -- it has no way
7102 to specify the pid. */
7106 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7107 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7110 /* Don't wait for it to die. I'm not really sure it matters whether
7111 we do or not. For the existing stubs, kill is a noop. */
7117 error (_("Can't kill process"));
7119 target_mourn_inferior ();
7123 remote_mourn (struct target_ops
*ops
)
7125 remote_mourn_1 (ops
);
7128 /* Worker function for remote_mourn. */
7130 remote_mourn_1 (struct target_ops
*target
)
7132 unpush_target (target
);
7134 /* remote_close takes care of doing most of the clean up. */
7135 generic_mourn_inferior ();
7139 extended_remote_mourn_1 (struct target_ops
*target
)
7141 struct remote_state
*rs
= get_remote_state ();
7143 /* In case we got here due to an error, but we're going to stay
7145 rs
->waiting_for_stop_reply
= 0;
7147 /* We're no longer interested in these events. */
7148 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7150 /* If the current general thread belonged to the process we just
7151 detached from or has exited, the remote side current general
7152 thread becomes undefined. Considering a case like this:
7154 - We just got here due to a detach.
7155 - The process that we're detaching from happens to immediately
7156 report a global breakpoint being hit in non-stop mode, in the
7157 same thread we had selected before.
7158 - GDB attaches to this process again.
7159 - This event happens to be the next event we handle.
7161 GDB would consider that the current general thread didn't need to
7162 be set on the stub side (with Hg), since for all it knew,
7163 GENERAL_THREAD hadn't changed.
7165 Notice that although in all-stop mode, the remote server always
7166 sets the current thread to the thread reporting the stop event,
7167 that doesn't happen in non-stop mode; in non-stop, the stub *must
7168 not* change the current thread when reporting a breakpoint hit,
7169 due to the decoupling of event reporting and event handling.
7171 To keep things simple, we always invalidate our notion of the
7173 record_currthread (minus_one_ptid
);
7175 /* Unlike "target remote", we do not want to unpush the target; then
7176 the next time the user says "run", we won't be connected. */
7178 /* Call common code to mark the inferior as not running. */
7179 generic_mourn_inferior ();
7181 if (!have_inferiors ())
7183 if (!remote_multi_process_p (rs
))
7185 /* Check whether the target is running now - some remote stubs
7186 automatically restart after kill. */
7188 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7190 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7192 /* Assume that the target has been restarted. Set inferior_ptid
7193 so that bits of core GDB realizes there's something here, e.g.,
7194 so that the user can say "kill" again. */
7195 inferior_ptid
= magic_null_ptid
;
7202 extended_remote_mourn (struct target_ops
*ops
)
7204 extended_remote_mourn_1 (ops
);
7208 extended_remote_run (char *args
)
7210 struct remote_state
*rs
= get_remote_state ();
7213 /* If the user has disabled vRun support, or we have detected that
7214 support is not available, do not try it. */
7215 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7218 strcpy (rs
->buf
, "vRun;");
7219 len
= strlen (rs
->buf
);
7221 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7222 error (_("Remote file name too long for run packet"));
7223 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7225 gdb_assert (args
!= NULL
);
7228 struct cleanup
*back_to
;
7232 argv
= gdb_buildargv (args
);
7233 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7234 for (i
= 0; argv
[i
] != NULL
; i
++)
7236 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7237 error (_("Argument list too long for run packet"));
7238 rs
->buf
[len
++] = ';';
7239 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7241 do_cleanups (back_to
);
7244 rs
->buf
[len
++] = '\0';
7247 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7249 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7251 /* We have a wait response; we don't need it, though. All is well. */
7254 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7255 /* It wasn't disabled before, but it is now. */
7259 if (remote_exec_file
[0] == '\0')
7260 error (_("Running the default executable on the remote target failed; "
7261 "try \"set remote exec-file\"?"));
7263 error (_("Running \"%s\" on the remote target failed"),
7268 /* In the extended protocol we want to be able to do things like
7269 "run" and have them basically work as expected. So we need
7270 a special create_inferior function. We support changing the
7271 executable file and the command line arguments, but not the
7275 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7276 char **env
, int from_tty
)
7278 /* If running asynchronously, register the target file descriptor
7279 with the event loop. */
7280 if (target_can_async_p ())
7281 target_async (inferior_event_handler
, 0);
7283 /* Now restart the remote server. */
7284 if (extended_remote_run (args
) == -1)
7286 /* vRun was not supported. Fail if we need it to do what the
7288 if (remote_exec_file
[0])
7289 error (_("Remote target does not support \"set remote exec-file\""));
7291 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7293 /* Fall back to "R". */
7294 extended_remote_restart ();
7297 if (!have_inferiors ())
7299 /* Clean up from the last time we ran, before we mark the target
7300 running again. This will mark breakpoints uninserted, and
7301 get_offsets may insert breakpoints. */
7302 init_thread_list ();
7303 init_wait_for_inferior ();
7306 /* Now mark the inferior as running before we do anything else. */
7307 inferior_ptid
= magic_null_ptid
;
7309 /* Now, if we have thread information, update inferior_ptid. */
7310 inferior_ptid
= remote_current_thread (inferior_ptid
);
7312 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7313 add_thread_silent (inferior_ptid
);
7315 /* Get updated offsets, if the stub uses qOffsets. */
7320 extended_remote_create_inferior (struct target_ops
*ops
,
7321 char *exec_file
, char *args
,
7322 char **env
, int from_tty
)
7324 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7328 /* Insert a breakpoint. On targets that have software breakpoint
7329 support, we ask the remote target to do the work; on targets
7330 which don't, we insert a traditional memory breakpoint. */
7333 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7334 struct bp_target_info
*bp_tgt
)
7336 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7337 If it succeeds, then set the support to PACKET_ENABLE. If it
7338 fails, and the user has explicitly requested the Z support then
7339 report an error, otherwise, mark it disabled and go on. */
7341 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7343 CORE_ADDR addr
= bp_tgt
->placed_address
;
7344 struct remote_state
*rs
;
7348 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7350 rs
= get_remote_state ();
7356 addr
= (ULONGEST
) remote_address_masked (addr
);
7357 p
+= hexnumstr (p
, addr
);
7358 sprintf (p
, ",%d", bpsize
);
7361 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7363 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7368 bp_tgt
->placed_address
= addr
;
7369 bp_tgt
->placed_size
= bpsize
;
7371 case PACKET_UNKNOWN
:
7376 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7380 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7381 struct bp_target_info
*bp_tgt
)
7383 CORE_ADDR addr
= bp_tgt
->placed_address
;
7384 struct remote_state
*rs
= get_remote_state ();
7386 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7394 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7395 p
+= hexnumstr (p
, addr
);
7396 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7399 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7401 return (rs
->buf
[0] == 'E');
7404 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7408 watchpoint_to_Z_packet (int type
)
7413 return Z_PACKET_WRITE_WP
;
7416 return Z_PACKET_READ_WP
;
7419 return Z_PACKET_ACCESS_WP
;
7422 internal_error (__FILE__
, __LINE__
,
7423 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7428 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
7430 struct remote_state
*rs
= get_remote_state ();
7432 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7434 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7437 sprintf (rs
->buf
, "Z%x,", packet
);
7438 p
= strchr (rs
->buf
, '\0');
7439 addr
= remote_address_masked (addr
);
7440 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7441 sprintf (p
, ",%x", len
);
7444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7446 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7450 case PACKET_UNKNOWN
:
7455 internal_error (__FILE__
, __LINE__
,
7456 _("remote_insert_watchpoint: reached end of function"));
7461 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
7463 struct remote_state
*rs
= get_remote_state ();
7465 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7467 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7470 sprintf (rs
->buf
, "z%x,", packet
);
7471 p
= strchr (rs
->buf
, '\0');
7472 addr
= remote_address_masked (addr
);
7473 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7474 sprintf (p
, ",%x", len
);
7476 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7478 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7481 case PACKET_UNKNOWN
:
7486 internal_error (__FILE__
, __LINE__
,
7487 _("remote_remove_watchpoint: reached end of function"));
7491 int remote_hw_watchpoint_limit
= -1;
7492 int remote_hw_breakpoint_limit
= -1;
7495 remote_check_watch_resources (int type
, int cnt
, int ot
)
7497 if (type
== bp_hardware_breakpoint
)
7499 if (remote_hw_breakpoint_limit
== 0)
7501 else if (remote_hw_breakpoint_limit
< 0)
7503 else if (cnt
<= remote_hw_breakpoint_limit
)
7508 if (remote_hw_watchpoint_limit
== 0)
7510 else if (remote_hw_watchpoint_limit
< 0)
7514 else if (cnt
<= remote_hw_watchpoint_limit
)
7521 remote_stopped_by_watchpoint (void)
7523 return remote_stopped_by_watchpoint_p
;
7527 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7530 if (remote_stopped_by_watchpoint ())
7532 *addr_p
= remote_watch_data_address
;
7541 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7542 struct bp_target_info
*bp_tgt
)
7545 struct remote_state
*rs
;
7548 /* The length field should be set to the size of a breakpoint
7549 instruction, even though we aren't inserting one ourselves. */
7551 gdbarch_remote_breakpoint_from_pc
7552 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7554 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7557 rs
= get_remote_state ();
7564 addr
= remote_address_masked (bp_tgt
->placed_address
);
7565 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7566 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7569 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7571 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7574 case PACKET_UNKNOWN
:
7579 internal_error (__FILE__
, __LINE__
,
7580 _("remote_insert_hw_breakpoint: reached end of function"));
7585 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7586 struct bp_target_info
*bp_tgt
)
7589 struct remote_state
*rs
= get_remote_state ();
7592 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7599 addr
= remote_address_masked (bp_tgt
->placed_address
);
7600 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7601 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7604 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7606 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7609 case PACKET_UNKNOWN
:
7614 internal_error (__FILE__
, __LINE__
,
7615 _("remote_remove_hw_breakpoint: reached end of function"));
7618 /* Table used by the crc32 function to calcuate the checksum. */
7620 static unsigned long crc32_table
[256] =
7623 static unsigned long
7624 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
7626 if (!crc32_table
[1])
7628 /* Initialize the CRC table and the decoding table. */
7632 for (i
= 0; i
< 256; i
++)
7634 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7635 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7642 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7648 /* Verify memory using the "qCRC:" request. */
7651 remote_verify_memory (struct target_ops
*ops
,
7652 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
7654 struct remote_state
*rs
= get_remote_state ();
7655 unsigned long host_crc
, target_crc
;
7658 /* FIXME: assumes lma can fit into long. */
7659 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7660 (long) lma
, (long) size
);
7663 /* Be clever; compute the host_crc before waiting for target
7665 host_crc
= crc32 (data
, size
, 0xffffffff);
7667 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7668 if (rs
->buf
[0] == 'E')
7671 if (rs
->buf
[0] != 'C')
7672 error (_("remote target does not support this operation"));
7674 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7675 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7677 return (host_crc
== target_crc
);
7680 /* compare-sections command
7682 With no arguments, compares each loadable section in the exec bfd
7683 with the same memory range on the target, and reports mismatches.
7684 Useful for verifying the image on the target against the exec file. */
7687 compare_sections_command (char *args
, int from_tty
)
7690 struct cleanup
*old_chain
;
7692 const char *sectname
;
7700 error (_("command cannot be used without an exec file"));
7702 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
7704 if (!(s
->flags
& SEC_LOAD
))
7705 continue; /* skip non-loadable section */
7707 size
= bfd_get_section_size (s
);
7709 continue; /* skip zero-length section */
7711 sectname
= bfd_get_section_name (exec_bfd
, s
);
7712 if (args
&& strcmp (args
, sectname
) != 0)
7713 continue; /* not the section selected by user */
7715 matched
= 1; /* do this section */
7718 sectdata
= xmalloc (size
);
7719 old_chain
= make_cleanup (xfree
, sectdata
);
7720 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
7722 res
= target_verify_memory (sectdata
, lma
, size
);
7725 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
7726 paddress (target_gdbarch
, lma
),
7727 paddress (target_gdbarch
, lma
+ size
));
7729 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
7730 paddress (target_gdbarch
, lma
),
7731 paddress (target_gdbarch
, lma
+ size
));
7733 printf_filtered ("matched.\n");
7736 printf_filtered ("MIS-MATCHED!\n");
7740 do_cleanups (old_chain
);
7743 warning (_("One or more sections of the remote executable does not match\n\
7744 the loaded file\n"));
7745 if (args
&& !matched
)
7746 printf_filtered (_("No loaded section named '%s'.\n"), args
);
7749 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7750 into remote target. The number of bytes written to the remote
7751 target is returned, or -1 for error. */
7754 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
7755 const char *annex
, const gdb_byte
*writebuf
,
7756 ULONGEST offset
, LONGEST len
,
7757 struct packet_config
*packet
)
7761 struct remote_state
*rs
= get_remote_state ();
7762 int max_size
= get_memory_write_packet_size ();
7764 if (packet
->support
== PACKET_DISABLE
)
7767 /* Insert header. */
7768 i
= snprintf (rs
->buf
, max_size
,
7769 "qXfer:%s:write:%s:%s:",
7770 object_name
, annex
? annex
: "",
7771 phex_nz (offset
, sizeof offset
));
7772 max_size
-= (i
+ 1);
7774 /* Escape as much data as fits into rs->buf. */
7775 buf_len
= remote_escape_output
7776 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
7778 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
7779 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
7780 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7783 unpack_varlen_hex (rs
->buf
, &n
);
7787 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
7788 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
7789 number of bytes read is returned, or 0 for EOF, or -1 for error.
7790 The number of bytes read may be less than LEN without indicating an
7791 EOF. PACKET is checked and updated to indicate whether the remote
7792 target supports this object. */
7795 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
7797 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
7798 struct packet_config
*packet
)
7800 static char *finished_object
;
7801 static char *finished_annex
;
7802 static ULONGEST finished_offset
;
7804 struct remote_state
*rs
= get_remote_state ();
7805 LONGEST i
, n
, packet_len
;
7807 if (packet
->support
== PACKET_DISABLE
)
7810 /* Check whether we've cached an end-of-object packet that matches
7812 if (finished_object
)
7814 if (strcmp (object_name
, finished_object
) == 0
7815 && strcmp (annex
? annex
: "", finished_annex
) == 0
7816 && offset
== finished_offset
)
7819 /* Otherwise, we're now reading something different. Discard
7821 xfree (finished_object
);
7822 xfree (finished_annex
);
7823 finished_object
= NULL
;
7824 finished_annex
= NULL
;
7827 /* Request only enough to fit in a single packet. The actual data
7828 may not, since we don't know how much of it will need to be escaped;
7829 the target is free to respond with slightly less data. We subtract
7830 five to account for the response type and the protocol frame. */
7831 n
= min (get_remote_packet_size () - 5, len
);
7832 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
7833 object_name
, annex
? annex
: "",
7834 phex_nz (offset
, sizeof offset
),
7835 phex_nz (n
, sizeof n
));
7836 i
= putpkt (rs
->buf
);
7841 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
7842 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7845 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
7846 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
7848 /* 'm' means there is (or at least might be) more data after this
7849 batch. That does not make sense unless there's at least one byte
7850 of data in this reply. */
7851 if (rs
->buf
[0] == 'm' && packet_len
== 1)
7852 error (_("Remote qXfer reply contained no data."));
7854 /* Got some data. */
7855 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
7857 /* 'l' is an EOF marker, possibly including a final block of data,
7858 or possibly empty. If we have the final block of a non-empty
7859 object, record this fact to bypass a subsequent partial read. */
7860 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
7862 finished_object
= xstrdup (object_name
);
7863 finished_annex
= xstrdup (annex
? annex
: "");
7864 finished_offset
= offset
+ i
;
7871 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
7872 const char *annex
, gdb_byte
*readbuf
,
7873 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
7875 struct remote_state
*rs
;
7880 set_general_thread (inferior_ptid
);
7882 rs
= get_remote_state ();
7884 /* Handle memory using the standard memory routines. */
7885 if (object
== TARGET_OBJECT_MEMORY
)
7890 /* If the remote target is connected but not running, we should
7891 pass this request down to a lower stratum (e.g. the executable
7893 if (!target_has_execution
)
7896 if (writebuf
!= NULL
)
7897 xfered
= remote_write_bytes (offset
, writebuf
, len
);
7899 xfered
= remote_read_bytes (offset
, readbuf
, len
);
7903 else if (xfered
== 0 && errno
== 0)
7909 /* Handle SPU memory using qxfer packets. */
7910 if (object
== TARGET_OBJECT_SPU
)
7913 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
7914 &remote_protocol_packets
7915 [PACKET_qXfer_spu_read
]);
7917 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
7918 &remote_protocol_packets
7919 [PACKET_qXfer_spu_write
]);
7922 /* Handle extra signal info using qxfer packets. */
7923 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
7926 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
7927 &remote_protocol_packets
7928 [PACKET_qXfer_siginfo_read
]);
7930 return remote_write_qxfer (ops
, "siginfo", annex
, writebuf
, offset
, len
,
7931 &remote_protocol_packets
7932 [PACKET_qXfer_siginfo_write
]);
7935 /* Only handle flash writes. */
7936 if (writebuf
!= NULL
)
7942 case TARGET_OBJECT_FLASH
:
7943 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
7947 else if (xfered
== 0 && errno
== 0)
7957 /* Map pre-existing objects onto letters. DO NOT do this for new
7958 objects!!! Instead specify new query packets. */
7961 case TARGET_OBJECT_AVR
:
7965 case TARGET_OBJECT_AUXV
:
7966 gdb_assert (annex
== NULL
);
7967 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
7968 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
7970 case TARGET_OBJECT_AVAILABLE_FEATURES
:
7971 return remote_read_qxfer
7972 (ops
, "features", annex
, readbuf
, offset
, len
,
7973 &remote_protocol_packets
[PACKET_qXfer_features
]);
7975 case TARGET_OBJECT_LIBRARIES
:
7976 return remote_read_qxfer
7977 (ops
, "libraries", annex
, readbuf
, offset
, len
,
7978 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
7980 case TARGET_OBJECT_MEMORY_MAP
:
7981 gdb_assert (annex
== NULL
);
7982 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
7983 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
7985 case TARGET_OBJECT_OSDATA
:
7986 /* Should only get here if we're connected. */
7987 gdb_assert (remote_desc
);
7988 return remote_read_qxfer
7989 (ops
, "osdata", annex
, readbuf
, offset
, len
,
7990 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
7992 case TARGET_OBJECT_THREADS
:
7993 gdb_assert (annex
== NULL
);
7994 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
7995 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8001 /* Note: a zero OFFSET and LEN can be used to query the minimum
8003 if (offset
== 0 && len
== 0)
8004 return (get_remote_packet_size ());
8005 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8006 large enough let the caller deal with it. */
8007 if (len
< get_remote_packet_size ())
8009 len
= get_remote_packet_size ();
8011 /* Except for querying the minimum buffer size, target must be open. */
8013 error (_("remote query is only available after target open"));
8015 gdb_assert (annex
!= NULL
);
8016 gdb_assert (readbuf
!= NULL
);
8022 /* We used one buffer char for the remote protocol q command and
8023 another for the query type. As the remote protocol encapsulation
8024 uses 4 chars plus one extra in case we are debugging
8025 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8028 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8030 /* Bad caller may have sent forbidden characters. */
8031 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8036 gdb_assert (annex
[i
] == '\0');
8038 i
= putpkt (rs
->buf
);
8042 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8043 strcpy ((char *) readbuf
, rs
->buf
);
8045 return strlen ((char *) readbuf
);
8049 remote_search_memory (struct target_ops
* ops
,
8050 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8051 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8052 CORE_ADDR
*found_addrp
)
8054 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8055 struct remote_state
*rs
= get_remote_state ();
8056 int max_size
= get_memory_write_packet_size ();
8057 struct packet_config
*packet
=
8058 &remote_protocol_packets
[PACKET_qSearch_memory
];
8059 /* number of packet bytes used to encode the pattern,
8060 this could be more than PATTERN_LEN due to escape characters */
8061 int escaped_pattern_len
;
8062 /* amount of pattern that was encodable in the packet */
8063 int used_pattern_len
;
8066 ULONGEST found_addr
;
8068 /* Don't go to the target if we don't have to.
8069 This is done before checking packet->support to avoid the possibility that
8070 a success for this edge case means the facility works in general. */
8071 if (pattern_len
> search_space_len
)
8073 if (pattern_len
== 0)
8075 *found_addrp
= start_addr
;
8079 /* If we already know the packet isn't supported, fall back to the simple
8080 way of searching memory. */
8082 if (packet
->support
== PACKET_DISABLE
)
8084 /* Target doesn't provided special support, fall back and use the
8085 standard support (copy memory and do the search here). */
8086 return simple_search_memory (ops
, start_addr
, search_space_len
,
8087 pattern
, pattern_len
, found_addrp
);
8090 /* Insert header. */
8091 i
= snprintf (rs
->buf
, max_size
,
8092 "qSearch:memory:%s;%s;",
8093 phex_nz (start_addr
, addr_size
),
8094 phex_nz (search_space_len
, sizeof (search_space_len
)));
8095 max_size
-= (i
+ 1);
8097 /* Escape as much data as fits into rs->buf. */
8098 escaped_pattern_len
=
8099 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8100 &used_pattern_len
, max_size
);
8102 /* Bail if the pattern is too large. */
8103 if (used_pattern_len
!= pattern_len
)
8104 error ("Pattern is too large to transmit to remote target.");
8106 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8107 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8108 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8110 /* The request may not have worked because the command is not
8111 supported. If so, fall back to the simple way. */
8112 if (packet
->support
== PACKET_DISABLE
)
8114 return simple_search_memory (ops
, start_addr
, search_space_len
,
8115 pattern
, pattern_len
, found_addrp
);
8120 if (rs
->buf
[0] == '0')
8122 else if (rs
->buf
[0] == '1')
8125 if (rs
->buf
[1] != ',')
8126 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8127 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8128 *found_addrp
= found_addr
;
8131 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8137 remote_rcmd (char *command
,
8138 struct ui_file
*outbuf
)
8140 struct remote_state
*rs
= get_remote_state ();
8144 error (_("remote rcmd is only available after target open"));
8146 /* Send a NULL command across as an empty command. */
8147 if (command
== NULL
)
8150 /* The query prefix. */
8151 strcpy (rs
->buf
, "qRcmd,");
8152 p
= strchr (rs
->buf
, '\0');
8154 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
8155 error (_("\"monitor\" command ``%s'' is too long."), command
);
8157 /* Encode the actual command. */
8158 bin2hex ((gdb_byte
*) command
, p
, 0);
8160 if (putpkt (rs
->buf
) < 0)
8161 error (_("Communication problem with target."));
8163 /* get/display the response */
8168 /* XXX - see also remote_get_noisy_reply(). */
8170 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8173 error (_("Target does not support this command."));
8174 if (buf
[0] == 'O' && buf
[1] != 'K')
8176 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8179 if (strcmp (buf
, "OK") == 0)
8181 if (strlen (buf
) == 3 && buf
[0] == 'E'
8182 && isdigit (buf
[1]) && isdigit (buf
[2]))
8184 error (_("Protocol error with Rcmd"));
8186 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8188 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8189 fputc_unfiltered (c
, outbuf
);
8195 static VEC(mem_region_s
) *
8196 remote_memory_map (struct target_ops
*ops
)
8198 VEC(mem_region_s
) *result
= NULL
;
8199 char *text
= target_read_stralloc (¤t_target
,
8200 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8204 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8205 result
= parse_memory_map (text
);
8206 do_cleanups (back_to
);
8213 packet_command (char *args
, int from_tty
)
8215 struct remote_state
*rs
= get_remote_state ();
8218 error (_("command can only be used with remote target"));
8221 error (_("remote-packet command requires packet text as argument"));
8223 puts_filtered ("sending: ");
8224 print_packet (args
);
8225 puts_filtered ("\n");
8228 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8229 puts_filtered ("received: ");
8230 print_packet (rs
->buf
);
8231 puts_filtered ("\n");
8235 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8237 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8239 static void threadset_test_cmd (char *cmd
, int tty
);
8241 static void threadalive_test (char *cmd
, int tty
);
8243 static void threadlist_test_cmd (char *cmd
, int tty
);
8245 int get_and_display_threadinfo (threadref
*ref
);
8247 static void threadinfo_test_cmd (char *cmd
, int tty
);
8249 static int thread_display_step (threadref
*ref
, void *context
);
8251 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8253 static void init_remote_threadtests (void);
8255 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8258 threadset_test_cmd (char *cmd
, int tty
)
8260 int sample_thread
= SAMPLE_THREAD
;
8262 printf_filtered (_("Remote threadset test\n"));
8263 set_general_thread (sample_thread
);
8268 threadalive_test (char *cmd
, int tty
)
8270 int sample_thread
= SAMPLE_THREAD
;
8271 int pid
= ptid_get_pid (inferior_ptid
);
8272 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8274 if (remote_thread_alive (ptid
))
8275 printf_filtered ("PASS: Thread alive test\n");
8277 printf_filtered ("FAIL: Thread alive test\n");
8280 void output_threadid (char *title
, threadref
*ref
);
8283 output_threadid (char *title
, threadref
*ref
)
8287 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8289 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8293 threadlist_test_cmd (char *cmd
, int tty
)
8296 threadref nextthread
;
8297 int done
, result_count
;
8298 threadref threadlist
[3];
8300 printf_filtered ("Remote Threadlist test\n");
8301 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8302 &result_count
, &threadlist
[0]))
8303 printf_filtered ("FAIL: threadlist test\n");
8306 threadref
*scan
= threadlist
;
8307 threadref
*limit
= scan
+ result_count
;
8309 while (scan
< limit
)
8310 output_threadid (" thread ", scan
++);
8315 display_thread_info (struct gdb_ext_thread_info
*info
)
8317 output_threadid ("Threadid: ", &info
->threadid
);
8318 printf_filtered ("Name: %s\n ", info
->shortname
);
8319 printf_filtered ("State: %s\n", info
->display
);
8320 printf_filtered ("other: %s\n\n", info
->more_display
);
8324 get_and_display_threadinfo (threadref
*ref
)
8328 struct gdb_ext_thread_info threadinfo
;
8330 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8331 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8332 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8333 display_thread_info (&threadinfo
);
8338 threadinfo_test_cmd (char *cmd
, int tty
)
8340 int athread
= SAMPLE_THREAD
;
8344 int_to_threadref (&thread
, athread
);
8345 printf_filtered ("Remote Threadinfo test\n");
8346 if (!get_and_display_threadinfo (&thread
))
8347 printf_filtered ("FAIL cannot get thread info\n");
8351 thread_display_step (threadref
*ref
, void *context
)
8353 /* output_threadid(" threadstep ",ref); *//* simple test */
8354 return get_and_display_threadinfo (ref
);
8358 threadlist_update_test_cmd (char *cmd
, int tty
)
8360 printf_filtered ("Remote Threadlist update test\n");
8361 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8365 init_remote_threadtests (void)
8367 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
8368 Fetch and print the remote list of thread identifiers, one pkt only"));
8369 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8370 _("Fetch and display info about one thread"));
8371 add_com ("tset", class_obscure
, threadset_test_cmd
,
8372 _("Test setting to a different thread"));
8373 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8374 _("Iterate through updating all remote thread info"));
8375 add_com ("talive", class_obscure
, threadalive_test
,
8376 _(" Remote thread alive test "));
8381 /* Convert a thread ID to a string. Returns the string in a static
8385 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8387 static char buf
[64];
8388 struct remote_state
*rs
= get_remote_state ();
8390 if (ptid_is_pid (ptid
))
8392 /* Printing an inferior target id. */
8394 /* When multi-process extensions are off, there's no way in the
8395 remote protocol to know the remote process id, if there's any
8396 at all. There's one exception --- when we're connected with
8397 target extended-remote, and we manually attached to a process
8398 with "attach PID". We don't record anywhere a flag that
8399 allows us to distinguish that case from the case of
8400 connecting with extended-remote and the stub already being
8401 attached to a process, and reporting yes to qAttached, hence
8402 no smart special casing here. */
8403 if (!remote_multi_process_p (rs
))
8405 xsnprintf (buf
, sizeof buf
, "Remote target");
8409 return normal_pid_to_str (ptid
);
8413 if (ptid_equal (magic_null_ptid
, ptid
))
8414 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8415 else if (remote_multi_process_p (rs
))
8416 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8417 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8419 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8420 ptid_get_tid (ptid
));
8425 /* Get the address of the thread local variable in OBJFILE which is
8426 stored at OFFSET within the thread local storage for thread PTID. */
8429 remote_get_thread_local_address (struct target_ops
*ops
,
8430 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8432 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8434 struct remote_state
*rs
= get_remote_state ();
8436 char *endp
= rs
->buf
+ get_remote_packet_size ();
8437 enum packet_result result
;
8439 strcpy (p
, "qGetTLSAddr:");
8441 p
= write_ptid (p
, endp
, ptid
);
8443 p
+= hexnumstr (p
, offset
);
8445 p
+= hexnumstr (p
, lm
);
8449 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8450 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8451 if (result
== PACKET_OK
)
8455 unpack_varlen_hex (rs
->buf
, &result
);
8458 else if (result
== PACKET_UNKNOWN
)
8459 throw_error (TLS_GENERIC_ERROR
,
8460 _("Remote target doesn't support qGetTLSAddr packet"));
8462 throw_error (TLS_GENERIC_ERROR
,
8463 _("Remote target failed to process qGetTLSAddr request"));
8466 throw_error (TLS_GENERIC_ERROR
,
8467 _("TLS not supported or disabled on this target"));
8472 /* Provide thread local base, i.e. Thread Information Block address.
8473 Returns 1 if ptid is found and thread_local_base is non zero. */
8476 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
8478 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
8480 struct remote_state
*rs
= get_remote_state ();
8482 char *endp
= rs
->buf
+ get_remote_packet_size ();
8483 enum packet_result result
;
8485 strcpy (p
, "qGetTIBAddr:");
8487 p
= write_ptid (p
, endp
, ptid
);
8491 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8492 result
= packet_ok (rs
->buf
,
8493 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
8494 if (result
== PACKET_OK
)
8498 unpack_varlen_hex (rs
->buf
, &result
);
8500 *addr
= (CORE_ADDR
) result
;
8503 else if (result
== PACKET_UNKNOWN
)
8504 error (_("Remote target doesn't support qGetTIBAddr packet"));
8506 error (_("Remote target failed to process qGetTIBAddr request"));
8509 error (_("qGetTIBAddr not supported or disabled on this target"));
8514 /* Support for inferring a target description based on the current
8515 architecture and the size of a 'g' packet. While the 'g' packet
8516 can have any size (since optional registers can be left off the
8517 end), some sizes are easily recognizable given knowledge of the
8518 approximate architecture. */
8520 struct remote_g_packet_guess
8523 const struct target_desc
*tdesc
;
8525 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8526 DEF_VEC_O(remote_g_packet_guess_s
);
8528 struct remote_g_packet_data
8530 VEC(remote_g_packet_guess_s
) *guesses
;
8533 static struct gdbarch_data
*remote_g_packet_data_handle
;
8536 remote_g_packet_data_init (struct obstack
*obstack
)
8538 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8542 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8543 const struct target_desc
*tdesc
)
8545 struct remote_g_packet_data
*data
8546 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8547 struct remote_g_packet_guess new_guess
, *guess
;
8550 gdb_assert (tdesc
!= NULL
);
8553 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8555 if (guess
->bytes
== bytes
)
8556 internal_error (__FILE__
, __LINE__
,
8557 "Duplicate g packet description added for size %d",
8560 new_guess
.bytes
= bytes
;
8561 new_guess
.tdesc
= tdesc
;
8562 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8565 /* Return 1 if remote_read_description would do anything on this target
8566 and architecture, 0 otherwise. */
8569 remote_read_description_p (struct target_ops
*target
)
8571 struct remote_g_packet_data
*data
8572 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8574 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8580 static const struct target_desc
*
8581 remote_read_description (struct target_ops
*target
)
8583 struct remote_g_packet_data
*data
8584 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8586 /* Do not try this during initial connection, when we do not know
8587 whether there is a running but stopped thread. */
8588 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8591 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8593 struct remote_g_packet_guess
*guess
;
8595 int bytes
= send_g_packet ();
8598 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8600 if (guess
->bytes
== bytes
)
8601 return guess
->tdesc
;
8603 /* We discard the g packet. A minor optimization would be to
8604 hold on to it, and fill the register cache once we have selected
8605 an architecture, but it's too tricky to do safely. */
8611 /* Remote file transfer support. This is host-initiated I/O, not
8612 target-initiated; for target-initiated, see remote-fileio.c. */
8614 /* If *LEFT is at least the length of STRING, copy STRING to
8615 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8616 decrease *LEFT. Otherwise raise an error. */
8619 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8621 int len
= strlen (string
);
8624 error (_("Packet too long for target."));
8626 memcpy (*buffer
, string
, len
);
8630 /* NUL-terminate the buffer as a convenience, if there is
8636 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8637 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8638 decrease *LEFT. Otherwise raise an error. */
8641 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8644 if (2 * len
> *left
)
8645 error (_("Packet too long for target."));
8647 bin2hex (bytes
, *buffer
, len
);
8651 /* NUL-terminate the buffer as a convenience, if there is
8657 /* If *LEFT is large enough, convert VALUE to hex and add it to
8658 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8659 decrease *LEFT. Otherwise raise an error. */
8662 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8664 int len
= hexnumlen (value
);
8667 error (_("Packet too long for target."));
8669 hexnumstr (*buffer
, value
);
8673 /* NUL-terminate the buffer as a convenience, if there is
8679 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8680 value, *REMOTE_ERRNO to the remote error number or zero if none
8681 was included, and *ATTACHMENT to point to the start of the annex
8682 if any. The length of the packet isn't needed here; there may
8683 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8685 Return 0 if the packet could be parsed, -1 if it could not. If
8686 -1 is returned, the other variables may not be initialized. */
8689 remote_hostio_parse_result (char *buffer
, int *retcode
,
8690 int *remote_errno
, char **attachment
)
8697 if (buffer
[0] != 'F')
8701 *retcode
= strtol (&buffer
[1], &p
, 16);
8702 if (errno
!= 0 || p
== &buffer
[1])
8705 /* Check for ",errno". */
8709 *remote_errno
= strtol (p
+ 1, &p2
, 16);
8710 if (errno
!= 0 || p
+ 1 == p2
)
8715 /* Check for ";attachment". If there is no attachment, the
8716 packet should end here. */
8719 *attachment
= p
+ 1;
8722 else if (*p
== '\0')
8728 /* Send a prepared I/O packet to the target and read its response.
8729 The prepared packet is in the global RS->BUF before this function
8730 is called, and the answer is there when we return.
8732 COMMAND_BYTES is the length of the request to send, which may include
8733 binary data. WHICH_PACKET is the packet configuration to check
8734 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8735 is set to the error number and -1 is returned. Otherwise the value
8736 returned by the function is returned.
8738 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8739 attachment is expected; an error will be reported if there's a
8740 mismatch. If one is found, *ATTACHMENT will be set to point into
8741 the packet buffer and *ATTACHMENT_LEN will be set to the
8742 attachment's length. */
8745 remote_hostio_send_command (int command_bytes
, int which_packet
,
8746 int *remote_errno
, char **attachment
,
8747 int *attachment_len
)
8749 struct remote_state
*rs
= get_remote_state ();
8750 int ret
, bytes_read
;
8751 char *attachment_tmp
;
8754 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
8756 *remote_errno
= FILEIO_ENOSYS
;
8760 putpkt_binary (rs
->buf
, command_bytes
);
8761 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8763 /* If it timed out, something is wrong. Don't try to parse the
8767 *remote_errno
= FILEIO_EINVAL
;
8771 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
8774 *remote_errno
= FILEIO_EINVAL
;
8776 case PACKET_UNKNOWN
:
8777 *remote_errno
= FILEIO_ENOSYS
;
8783 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
8786 *remote_errno
= FILEIO_EINVAL
;
8790 /* Make sure we saw an attachment if and only if we expected one. */
8791 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
8792 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
8794 *remote_errno
= FILEIO_EINVAL
;
8798 /* If an attachment was found, it must point into the packet buffer;
8799 work out how many bytes there were. */
8800 if (attachment_tmp
!= NULL
)
8802 *attachment
= attachment_tmp
;
8803 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
8809 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
8810 remote file descriptor, or -1 if an error occurs (and set
8814 remote_hostio_open (const char *filename
, int flags
, int mode
,
8817 struct remote_state
*rs
= get_remote_state ();
8819 int left
= get_remote_packet_size () - 1;
8821 remote_buffer_add_string (&p
, &left
, "vFile:open:");
8823 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8825 remote_buffer_add_string (&p
, &left
, ",");
8827 remote_buffer_add_int (&p
, &left
, flags
);
8828 remote_buffer_add_string (&p
, &left
, ",");
8830 remote_buffer_add_int (&p
, &left
, mode
);
8832 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
8833 remote_errno
, NULL
, NULL
);
8836 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
8837 Return the number of bytes written, or -1 if an error occurs (and
8838 set *REMOTE_ERRNO). */
8841 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
8842 ULONGEST offset
, int *remote_errno
)
8844 struct remote_state
*rs
= get_remote_state ();
8846 int left
= get_remote_packet_size ();
8849 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
8851 remote_buffer_add_int (&p
, &left
, fd
);
8852 remote_buffer_add_string (&p
, &left
, ",");
8854 remote_buffer_add_int (&p
, &left
, offset
);
8855 remote_buffer_add_string (&p
, &left
, ",");
8857 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
8858 get_remote_packet_size () - (p
- rs
->buf
));
8860 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
8861 remote_errno
, NULL
, NULL
);
8864 /* Read up to LEN bytes FD on the remote target into READ_BUF
8865 Return the number of bytes read, or -1 if an error occurs (and
8866 set *REMOTE_ERRNO). */
8869 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
8870 ULONGEST offset
, int *remote_errno
)
8872 struct remote_state
*rs
= get_remote_state ();
8875 int left
= get_remote_packet_size ();
8876 int ret
, attachment_len
;
8879 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
8881 remote_buffer_add_int (&p
, &left
, fd
);
8882 remote_buffer_add_string (&p
, &left
, ",");
8884 remote_buffer_add_int (&p
, &left
, len
);
8885 remote_buffer_add_string (&p
, &left
, ",");
8887 remote_buffer_add_int (&p
, &left
, offset
);
8889 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
8890 remote_errno
, &attachment
,
8896 read_len
= remote_unescape_input (attachment
, attachment_len
,
8898 if (read_len
!= ret
)
8899 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
8904 /* Close FD on the remote target. Return 0, or -1 if an error occurs
8905 (and set *REMOTE_ERRNO). */
8908 remote_hostio_close (int fd
, int *remote_errno
)
8910 struct remote_state
*rs
= get_remote_state ();
8912 int left
= get_remote_packet_size () - 1;
8914 remote_buffer_add_string (&p
, &left
, "vFile:close:");
8916 remote_buffer_add_int (&p
, &left
, fd
);
8918 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
8919 remote_errno
, NULL
, NULL
);
8922 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
8923 occurs (and set *REMOTE_ERRNO). */
8926 remote_hostio_unlink (const char *filename
, int *remote_errno
)
8928 struct remote_state
*rs
= get_remote_state ();
8930 int left
= get_remote_packet_size () - 1;
8932 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
8934 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8937 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
8938 remote_errno
, NULL
, NULL
);
8942 remote_fileio_errno_to_host (int errnum
)
8966 case FILEIO_ENOTDIR
:
8986 case FILEIO_ENAMETOOLONG
:
8987 return ENAMETOOLONG
;
8993 remote_hostio_error (int errnum
)
8995 int host_error
= remote_fileio_errno_to_host (errnum
);
8997 if (host_error
== -1)
8998 error (_("Unknown remote I/O error %d"), errnum
);
9000 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9004 remote_hostio_close_cleanup (void *opaque
)
9006 int fd
= *(int *) opaque
;
9009 remote_hostio_close (fd
, &remote_errno
);
9014 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9016 const char *filename
= bfd_get_filename (abfd
);
9017 int fd
, remote_errno
;
9020 gdb_assert (remote_filename_p (filename
));
9022 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9025 errno
= remote_fileio_errno_to_host (remote_errno
);
9026 bfd_set_error (bfd_error_system_call
);
9030 stream
= xmalloc (sizeof (int));
9036 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9038 int fd
= *(int *)stream
;
9043 /* Ignore errors on close; these may happen if the remote
9044 connection was already torn down. */
9045 remote_hostio_close (fd
, &remote_errno
);
9051 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9052 file_ptr nbytes
, file_ptr offset
)
9054 int fd
= *(int *)stream
;
9056 file_ptr pos
, bytes
;
9059 while (nbytes
> pos
)
9061 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9062 offset
+ pos
, &remote_errno
);
9064 /* Success, but no bytes, means end-of-file. */
9068 errno
= remote_fileio_errno_to_host (remote_errno
);
9069 bfd_set_error (bfd_error_system_call
);
9080 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9082 /* FIXME: We should probably implement remote_hostio_stat. */
9083 sb
->st_size
= INT_MAX
;
9088 remote_filename_p (const char *filename
)
9090 return strncmp (filename
, "remote:", 7) == 0;
9094 remote_bfd_open (const char *remote_file
, const char *target
)
9096 return bfd_openr_iovec (remote_file
, target
,
9097 remote_bfd_iovec_open
, NULL
,
9098 remote_bfd_iovec_pread
,
9099 remote_bfd_iovec_close
,
9100 remote_bfd_iovec_stat
);
9104 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9106 struct cleanup
*back_to
, *close_cleanup
;
9107 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9110 int bytes_in_buffer
;
9115 error (_("command can only be used with remote target"));
9117 file
= fopen (local_file
, "rb");
9119 perror_with_name (local_file
);
9120 back_to
= make_cleanup_fclose (file
);
9122 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9124 0700, &remote_errno
);
9126 remote_hostio_error (remote_errno
);
9128 /* Send up to this many bytes at once. They won't all fit in the
9129 remote packet limit, so we'll transfer slightly fewer. */
9130 io_size
= get_remote_packet_size ();
9131 buffer
= xmalloc (io_size
);
9132 make_cleanup (xfree
, buffer
);
9134 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9136 bytes_in_buffer
= 0;
9139 while (bytes_in_buffer
|| !saw_eof
)
9143 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
9148 error (_("Error reading %s."), local_file
);
9151 /* EOF. Unless there is something still in the
9152 buffer from the last iteration, we are done. */
9154 if (bytes_in_buffer
== 0)
9162 bytes
+= bytes_in_buffer
;
9163 bytes_in_buffer
= 0;
9165 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
9168 remote_hostio_error (remote_errno
);
9169 else if (retcode
== 0)
9170 error (_("Remote write of %d bytes returned 0!"), bytes
);
9171 else if (retcode
< bytes
)
9173 /* Short write. Save the rest of the read data for the next
9175 bytes_in_buffer
= bytes
- retcode
;
9176 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9182 discard_cleanups (close_cleanup
);
9183 if (remote_hostio_close (fd
, &remote_errno
))
9184 remote_hostio_error (remote_errno
);
9187 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9188 do_cleanups (back_to
);
9192 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9194 struct cleanup
*back_to
, *close_cleanup
;
9195 int fd
, remote_errno
, bytes
, io_size
;
9201 error (_("command can only be used with remote target"));
9203 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9205 remote_hostio_error (remote_errno
);
9207 file
= fopen (local_file
, "wb");
9209 perror_with_name (local_file
);
9210 back_to
= make_cleanup_fclose (file
);
9212 /* Send up to this many bytes at once. They won't all fit in the
9213 remote packet limit, so we'll transfer slightly fewer. */
9214 io_size
= get_remote_packet_size ();
9215 buffer
= xmalloc (io_size
);
9216 make_cleanup (xfree
, buffer
);
9218 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9223 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9225 /* Success, but no bytes, means end-of-file. */
9228 remote_hostio_error (remote_errno
);
9232 bytes
= fwrite (buffer
, 1, bytes
, file
);
9234 perror_with_name (local_file
);
9237 discard_cleanups (close_cleanup
);
9238 if (remote_hostio_close (fd
, &remote_errno
))
9239 remote_hostio_error (remote_errno
);
9242 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9243 do_cleanups (back_to
);
9247 remote_file_delete (const char *remote_file
, int from_tty
)
9249 int retcode
, remote_errno
;
9252 error (_("command can only be used with remote target"));
9254 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9256 remote_hostio_error (remote_errno
);
9259 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9263 remote_put_command (char *args
, int from_tty
)
9265 struct cleanup
*back_to
;
9269 error_no_arg (_("file to put"));
9271 argv
= gdb_buildargv (args
);
9272 back_to
= make_cleanup_freeargv (argv
);
9273 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9274 error (_("Invalid parameters to remote put"));
9276 remote_file_put (argv
[0], argv
[1], from_tty
);
9278 do_cleanups (back_to
);
9282 remote_get_command (char *args
, int from_tty
)
9284 struct cleanup
*back_to
;
9288 error_no_arg (_("file to get"));
9290 argv
= gdb_buildargv (args
);
9291 back_to
= make_cleanup_freeargv (argv
);
9292 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9293 error (_("Invalid parameters to remote get"));
9295 remote_file_get (argv
[0], argv
[1], from_tty
);
9297 do_cleanups (back_to
);
9301 remote_delete_command (char *args
, int from_tty
)
9303 struct cleanup
*back_to
;
9307 error_no_arg (_("file to delete"));
9309 argv
= gdb_buildargv (args
);
9310 back_to
= make_cleanup_freeargv (argv
);
9311 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9312 error (_("Invalid parameters to remote delete"));
9314 remote_file_delete (argv
[0], from_tty
);
9316 do_cleanups (back_to
);
9320 remote_command (char *args
, int from_tty
)
9322 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9326 remote_can_execute_reverse (void)
9328 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9329 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9336 remote_supports_non_stop (void)
9342 remote_supports_multi_process (void)
9344 struct remote_state
*rs
= get_remote_state ();
9345 return remote_multi_process_p (rs
);
9349 remote_supports_cond_tracepoints (void)
9351 struct remote_state
*rs
= get_remote_state ();
9352 return rs
->cond_tracepoints
;
9356 remote_supports_fast_tracepoints (void)
9358 struct remote_state
*rs
= get_remote_state ();
9359 return rs
->fast_tracepoints
;
9363 remote_trace_init (void)
9366 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9367 if (strcmp (target_buf
, "OK") != 0)
9368 error (_("Target does not support this command."));
9371 static void free_actions_list (char **actions_list
);
9372 static void free_actions_list_cleanup_wrapper (void *);
9374 free_actions_list_cleanup_wrapper (void *al
)
9376 free_actions_list (al
);
9380 free_actions_list (char **actions_list
)
9384 if (actions_list
== 0)
9387 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9388 xfree (actions_list
[ndx
]);
9390 xfree (actions_list
);
9393 /* Recursive routine to walk through command list including loops, and
9394 download packets for each command. */
9397 remote_download_command_source (int num
, ULONGEST addr
,
9398 struct command_line
*cmds
)
9400 struct remote_state
*rs
= get_remote_state ();
9401 struct command_line
*cmd
;
9403 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
9405 QUIT
; /* allow user to bail out with ^C */
9406 strcpy (rs
->buf
, "QTDPsrc:");
9407 encode_source_string (num
, addr
, "cmd", cmd
->line
,
9408 rs
->buf
+ strlen (rs
->buf
),
9409 rs
->buf_size
- strlen (rs
->buf
));
9411 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9412 if (strcmp (target_buf
, "OK"))
9413 warning (_("Target does not support source download."));
9415 if (cmd
->control_type
== while_control
9416 || cmd
->control_type
== while_stepping_control
)
9418 remote_download_command_source (num
, addr
, *cmd
->body_list
);
9420 QUIT
; /* allow user to bail out with ^C */
9421 strcpy (rs
->buf
, "QTDPsrc:");
9422 encode_source_string (num
, addr
, "cmd", "end",
9423 rs
->buf
+ strlen (rs
->buf
),
9424 rs
->buf_size
- strlen (rs
->buf
));
9426 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9427 if (strcmp (target_buf
, "OK"))
9428 warning (_("Target does not support source download."));
9434 remote_download_tracepoint (struct breakpoint
*t
)
9436 struct bp_location
*loc
;
9441 char **stepping_actions
;
9443 struct cleanup
*old_chain
= NULL
;
9444 struct agent_expr
*aexpr
;
9445 struct cleanup
*aexpr_chain
= NULL
;
9448 /* Iterate over all the tracepoint locations. It's up to the target to
9449 notice multiple tracepoint packets with the same number but different
9450 addresses, and treat them as multiple locations. */
9451 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
9453 encode_actions (t
, loc
, &tdp_actions
, &stepping_actions
);
9454 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9456 (void) make_cleanup (free_actions_list_cleanup_wrapper
, stepping_actions
);
9458 tpaddr
= loc
->address
;
9459 sprintf_vma (addrbuf
, tpaddr
);
9460 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", t
->number
,
9461 addrbuf
, /* address */
9462 (t
->enable_state
== bp_enabled
? 'E' : 'D'),
9463 t
->step_count
, t
->pass_count
);
9464 /* Fast tracepoints are mostly handled by the target, but we can
9465 tell the target how big of an instruction block should be moved
9467 if (t
->type
== bp_fast_tracepoint
)
9469 /* Only test for support at download time; we may not know
9470 target capabilities at definition time. */
9471 if (remote_supports_fast_tracepoints ())
9475 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9476 tpaddr
, &isize
, NULL
))
9477 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9479 /* If it passed validation at definition but fails now,
9480 something is very wrong. */
9481 internal_error (__FILE__
, __LINE__
,
9482 "Fast tracepoint not valid during download");
9485 /* Fast tracepoints are functionally identical to regular
9486 tracepoints, so don't take lack of support as a reason to
9487 give up on the trace run. */
9488 warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t
->number
);
9490 /* If the tracepoint has a conditional, make it into an agent
9491 expression and append to the definition. */
9494 /* Only test support at download time, we may not know target
9495 capabilities at definition time. */
9496 if (remote_supports_cond_tracepoints ())
9498 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
9499 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9500 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9501 pkt
= buf
+ strlen (buf
);
9502 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9503 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9505 do_cleanups (aexpr_chain
);
9508 warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t
->number
);
9511 if (t
->commands
|| *default_collect
)
9514 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9515 if (strcmp (target_buf
, "OK"))
9516 error (_("Target does not support tracepoints."));
9518 /* do_single_steps (t); */
9521 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9523 QUIT
; /* allow user to bail out with ^C */
9524 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9525 t
->number
, addrbuf
, /* address */
9527 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9530 remote_get_noisy_reply (&target_buf
,
9532 if (strcmp (target_buf
, "OK"))
9533 error (_("Error on target while setting tracepoints."));
9536 if (stepping_actions
)
9538 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9540 QUIT
; /* allow user to bail out with ^C */
9541 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9542 t
->number
, addrbuf
, /* address */
9543 ((ndx
== 0) ? "S" : ""),
9544 stepping_actions
[ndx
],
9545 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9547 remote_get_noisy_reply (&target_buf
,
9549 if (strcmp (target_buf
, "OK"))
9550 error (_("Error on target while setting tracepoints."));
9554 if (remote_protocol_packets
[PACKET_TracepointSource
].support
== PACKET_ENABLE
)
9558 strcpy (buf
, "QTDPsrc:");
9559 encode_source_string (t
->number
, loc
->address
,
9560 "at", t
->addr_string
, buf
+ strlen (buf
),
9561 2048 - strlen (buf
));
9564 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9565 if (strcmp (target_buf
, "OK"))
9566 warning (_("Target does not support source download."));
9570 strcpy (buf
, "QTDPsrc:");
9571 encode_source_string (t
->number
, loc
->address
,
9572 "cond", t
->cond_string
, buf
+ strlen (buf
),
9573 2048 - strlen (buf
));
9575 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9576 if (strcmp (target_buf
, "OK"))
9577 warning (_("Target does not support source download."));
9579 remote_download_command_source (t
->number
, loc
->address
,
9580 breakpoint_commands (t
));
9583 do_cleanups (old_chain
);
9588 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9590 struct remote_state
*rs
= get_remote_state ();
9593 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9594 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9595 p
= rs
->buf
+ strlen (rs
->buf
);
9596 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9597 error (_("Trace state variable name too long for tsv definition packet"));
9598 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9601 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9602 if (*target_buf
== '\0')
9603 error (_("Target does not support this command."));
9604 if (strcmp (target_buf
, "OK") != 0)
9605 error (_("Error on target while downloading trace state variable."));
9609 remote_trace_set_readonly_regions (void)
9617 return; /* No information to give. */
9619 strcpy (target_buf
, "QTro");
9620 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9622 char tmp1
[40], tmp2
[40];
9624 if ((s
->flags
& SEC_LOAD
) == 0 ||
9625 /* (s->flags & SEC_CODE) == 0 || */
9626 (s
->flags
& SEC_READONLY
) == 0)
9631 size
= bfd_get_section_size (s
);
9632 sprintf_vma (tmp1
, lma
);
9633 sprintf_vma (tmp2
, lma
+ size
);
9634 sprintf (target_buf
+ strlen (target_buf
),
9635 ":%s,%s", tmp1
, tmp2
);
9639 putpkt (target_buf
);
9640 getpkt (&target_buf
, &target_buf_size
, 0);
9645 remote_trace_start (void)
9648 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9649 if (*target_buf
== '\0')
9650 error (_("Target does not support this command."));
9651 if (strcmp (target_buf
, "OK") != 0)
9652 error (_("Bogus reply from target: %s"), target_buf
);
9656 remote_get_trace_status (struct trace_status
*ts
)
9659 /* FIXME we need to get register block size some other way */
9660 extern int trace_regblock_size
;
9661 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
9663 putpkt ("qTStatus");
9664 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9666 /* If the remote target doesn't do tracing, flag it. */
9670 /* We're working with a live target. */
9673 /* Set some defaults. */
9674 ts
->running_known
= 0;
9675 ts
->stop_reason
= trace_stop_reason_unknown
;
9676 ts
->traceframe_count
= -1;
9677 ts
->buffer_free
= 0;
9680 error (_("Bogus trace status reply from target: %s"), target_buf
);
9682 parse_trace_status (p
, ts
);
9688 remote_trace_stop (void)
9691 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9692 if (*target_buf
== '\0')
9693 error (_("Target does not support this command."));
9694 if (strcmp (target_buf
, "OK") != 0)
9695 error (_("Bogus reply from target: %s"), target_buf
);
9699 remote_trace_find (enum trace_find_type type
, int num
,
9700 ULONGEST addr1
, ULONGEST addr2
,
9703 struct remote_state
*rs
= get_remote_state ();
9705 int target_frameno
= -1, target_tracept
= -1;
9708 strcpy (p
, "QTFrame:");
9709 p
= strchr (p
, '\0');
9713 sprintf (p
, "%x", num
);
9716 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
9719 sprintf (p
, "tdp:%x", num
);
9722 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9725 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9728 error ("Unknown trace find type %d", type
);
9732 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
9734 error (_("Target does not support this command."));
9736 while (reply
&& *reply
)
9741 target_frameno
= (int) strtol (p
, &reply
, 16);
9743 error (_("Unable to parse trace frame number"));
9744 if (target_frameno
== -1)
9749 target_tracept
= (int) strtol (p
, &reply
, 16);
9751 error (_("Unable to parse tracepoint number"));
9753 case 'O': /* "OK"? */
9754 if (reply
[1] == 'K' && reply
[2] == '\0')
9757 error (_("Bogus reply from target: %s"), reply
);
9760 error (_("Bogus reply from target: %s"), reply
);
9763 *tpp
= target_tracept
;
9764 return target_frameno
;
9768 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
9770 struct remote_state
*rs
= get_remote_state ();
9774 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
9776 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9777 if (reply
&& *reply
)
9781 unpack_varlen_hex (reply
+ 1, &uval
);
9782 *val
= (LONGEST
) uval
;
9790 remote_save_trace_data (const char *filename
)
9792 struct remote_state
*rs
= get_remote_state ();
9796 strcpy (p
, "QTSave:");
9798 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
9799 error (_("Remote file name too long for trace save packet"));
9800 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
9803 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9805 error (_("Target does not support this command."));
9806 if (strcmp (reply
, "OK") != 0)
9807 error (_("Bogus reply from target: %s"), reply
);
9811 /* This is basically a memory transfer, but needs to be its own packet
9812 because we don't know how the target actually organizes its trace
9813 memory, plus we want to be able to ask for as much as possible, but
9814 not be unhappy if we don't get as much as we ask for. */
9817 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
9819 struct remote_state
*rs
= get_remote_state ();
9825 strcpy (p
, "qTBuffer:");
9827 p
+= hexnumstr (p
, offset
);
9829 p
+= hexnumstr (p
, len
);
9833 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9834 if (reply
&& *reply
)
9836 /* 'l' by itself means we're at the end of the buffer and
9837 there is nothing more to get. */
9841 /* Convert the reply into binary. Limit the number of bytes to
9842 convert according to our passed-in buffer size, rather than
9843 what was returned in the packet; if the target is
9844 unexpectedly generous and gives us a bigger reply than we
9845 asked for, we don't want to crash. */
9846 rslt
= hex2bin (target_buf
, buf
, len
);
9850 /* Something went wrong, flag as an error. */
9855 remote_set_disconnected_tracing (int val
)
9857 struct remote_state
*rs
= get_remote_state ();
9859 if (rs
->disconnected_tracing
)
9863 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
9865 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9867 error (_("Target does not support this command."));
9868 if (strcmp (reply
, "OK") != 0)
9869 error (_("Bogus reply from target: %s"), reply
);
9872 warning (_("Target does not support disconnected tracing."));
9876 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
9878 struct thread_info
*info
= find_thread_ptid (ptid
);
9879 if (info
&& info
->private)
9880 return info
->private->core
;
9885 remote_set_circular_trace_buffer (int val
)
9887 struct remote_state
*rs
= get_remote_state ();
9890 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
9892 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9894 error (_("Target does not support this command."));
9895 if (strcmp (reply
, "OK") != 0)
9896 error (_("Bogus reply from target: %s"), reply
);
9900 init_remote_ops (void)
9902 remote_ops
.to_shortname
= "remote";
9903 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
9905 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9906 Specify the serial device it is connected to\n\
9907 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
9908 remote_ops
.to_open
= remote_open
;
9909 remote_ops
.to_close
= remote_close
;
9910 remote_ops
.to_detach
= remote_detach
;
9911 remote_ops
.to_disconnect
= remote_disconnect
;
9912 remote_ops
.to_resume
= remote_resume
;
9913 remote_ops
.to_wait
= remote_wait
;
9914 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
9915 remote_ops
.to_store_registers
= remote_store_registers
;
9916 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
9917 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
9918 remote_ops
.to_files_info
= remote_files_info
;
9919 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
9920 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
9921 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
9922 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
9923 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
9924 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
9925 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
9926 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
9927 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
9928 remote_ops
.to_kill
= remote_kill
;
9929 remote_ops
.to_load
= generic_load
;
9930 remote_ops
.to_mourn_inferior
= remote_mourn
;
9931 remote_ops
.to_notice_signals
= remote_notice_signals
;
9932 remote_ops
.to_thread_alive
= remote_thread_alive
;
9933 remote_ops
.to_find_new_threads
= remote_threads_info
;
9934 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
9935 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
9936 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
9937 remote_ops
.to_stop
= remote_stop
;
9938 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
9939 remote_ops
.to_rcmd
= remote_rcmd
;
9940 remote_ops
.to_log_command
= serial_log_command
;
9941 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
9942 remote_ops
.to_stratum
= process_stratum
;
9943 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
9944 remote_ops
.to_has_memory
= default_child_has_memory
;
9945 remote_ops
.to_has_stack
= default_child_has_stack
;
9946 remote_ops
.to_has_registers
= default_child_has_registers
;
9947 remote_ops
.to_has_execution
= default_child_has_execution
;
9948 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
9949 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
9950 remote_ops
.to_magic
= OPS_MAGIC
;
9951 remote_ops
.to_memory_map
= remote_memory_map
;
9952 remote_ops
.to_flash_erase
= remote_flash_erase
;
9953 remote_ops
.to_flash_done
= remote_flash_done
;
9954 remote_ops
.to_read_description
= remote_read_description
;
9955 remote_ops
.to_search_memory
= remote_search_memory
;
9956 remote_ops
.to_can_async_p
= remote_can_async_p
;
9957 remote_ops
.to_is_async_p
= remote_is_async_p
;
9958 remote_ops
.to_async
= remote_async
;
9959 remote_ops
.to_async_mask
= remote_async_mask
;
9960 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
9961 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
9962 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
9963 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
9964 remote_ops
.to_trace_init
= remote_trace_init
;
9965 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
9966 remote_ops
.to_download_trace_state_variable
= remote_download_trace_state_variable
;
9967 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
9968 remote_ops
.to_trace_start
= remote_trace_start
;
9969 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
9970 remote_ops
.to_trace_stop
= remote_trace_stop
;
9971 remote_ops
.to_trace_find
= remote_trace_find
;
9972 remote_ops
.to_get_trace_state_variable_value
= remote_get_trace_state_variable_value
;
9973 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
9974 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
9975 remote_ops
.to_upload_trace_state_variables
= remote_upload_trace_state_variables
;
9976 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
9977 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
9978 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
9979 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
9980 remote_ops
.to_verify_memory
= remote_verify_memory
;
9981 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
9984 /* Set up the extended remote vector by making a copy of the standard
9985 remote vector and adding to it. */
9988 init_extended_remote_ops (void)
9990 extended_remote_ops
= remote_ops
;
9992 extended_remote_ops
.to_shortname
= "extended-remote";
9993 extended_remote_ops
.to_longname
=
9994 "Extended remote serial target in gdb-specific protocol";
9995 extended_remote_ops
.to_doc
=
9996 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9997 Specify the serial device it is connected to (e.g. /dev/ttya).";
9998 extended_remote_ops
.to_open
= extended_remote_open
;
9999 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
10000 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
10001 extended_remote_ops
.to_detach
= extended_remote_detach
;
10002 extended_remote_ops
.to_attach
= extended_remote_attach
;
10003 extended_remote_ops
.to_kill
= extended_remote_kill
;
10007 remote_can_async_p (void)
10009 if (!target_async_permitted
)
10010 /* We only enable async when the user specifically asks for it. */
10013 /* We're async whenever the serial device is. */
10014 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
10018 remote_is_async_p (void)
10020 if (!target_async_permitted
)
10021 /* We only enable async when the user specifically asks for it. */
10024 /* We're async whenever the serial device is. */
10025 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
10028 /* Pass the SERIAL event on and up to the client. One day this code
10029 will be able to delay notifying the client of an event until the
10030 point where an entire packet has been received. */
10032 static void (*async_client_callback
) (enum inferior_event_type event_type
,
10034 static void *async_client_context
;
10035 static serial_event_ftype remote_async_serial_handler
;
10038 remote_async_serial_handler (struct serial
*scb
, void *context
)
10040 /* Don't propogate error information up to the client. Instead let
10041 the client find out about the error by querying the target. */
10042 async_client_callback (INF_REG_EVENT
, async_client_context
);
10046 remote_async_inferior_event_handler (gdb_client_data data
)
10048 inferior_event_handler (INF_REG_EVENT
, NULL
);
10052 remote_async_get_pending_events_handler (gdb_client_data data
)
10054 remote_get_pending_stop_replies ();
10058 remote_async (void (*callback
) (enum inferior_event_type event_type
,
10059 void *context
), void *context
)
10061 if (remote_async_mask_value
== 0)
10062 internal_error (__FILE__
, __LINE__
,
10063 _("Calling remote_async when async is masked"));
10065 if (callback
!= NULL
)
10067 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
10068 async_client_callback
= callback
;
10069 async_client_context
= context
;
10072 serial_async (remote_desc
, NULL
, NULL
);
10076 remote_async_mask (int new_mask
)
10078 int curr_mask
= remote_async_mask_value
;
10079 remote_async_mask_value
= new_mask
;
10084 set_remote_cmd (char *args
, int from_tty
)
10086 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
10090 show_remote_cmd (char *args
, int from_tty
)
10092 /* We can't just use cmd_show_list here, because we want to skip
10093 the redundant "show remote Z-packet" and the legacy aliases. */
10094 struct cleanup
*showlist_chain
;
10095 struct cmd_list_element
*list
= remote_show_cmdlist
;
10097 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
10098 for (; list
!= NULL
; list
= list
->next
)
10099 if (strcmp (list
->name
, "Z-packet") == 0)
10101 else if (list
->type
== not_set_cmd
)
10102 /* Alias commands are exactly like the original, except they
10103 don't have the normal type. */
10107 struct cleanup
*option_chain
10108 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
10109 ui_out_field_string (uiout
, "name", list
->name
);
10110 ui_out_text (uiout
, ": ");
10111 if (list
->type
== show_cmd
)
10112 do_setshow_command ((char *) NULL
, from_tty
, list
);
10114 cmd_func (list
, NULL
, from_tty
);
10115 /* Close the tuple. */
10116 do_cleanups (option_chain
);
10119 /* Close the tuple. */
10120 do_cleanups (showlist_chain
);
10124 /* Function to be called whenever a new objfile (shlib) is detected. */
10126 remote_new_objfile (struct objfile
*objfile
)
10128 if (remote_desc
!= 0) /* Have a remote connection. */
10129 remote_check_symbols (objfile
);
10132 /* Pull all the tracepoints defined on the target and create local
10133 data structures representing them. We don't want to create real
10134 tracepoints yet, we don't want to mess up the user's existing
10138 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
10140 struct remote_state
*rs
= get_remote_state ();
10143 /* Ask for a first packet of tracepoint definition. */
10145 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10147 while (*p
&& *p
!= 'l')
10149 parse_tracepoint_definition (p
, utpp
);
10150 /* Ask for another packet of tracepoint definition. */
10152 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10159 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
10161 struct remote_state
*rs
= get_remote_state ();
10164 /* Ask for a first packet of variable definition. */
10166 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10168 while (*p
&& *p
!= 'l')
10170 parse_tsv_definition (p
, utsvp
);
10171 /* Ask for another packet of variable definition. */
10173 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10180 _initialize_remote (void)
10182 struct remote_state
*rs
;
10183 struct cmd_list_element
*cmd
;
10186 /* architecture specific data */
10187 remote_gdbarch_data_handle
=
10188 gdbarch_data_register_post_init (init_remote_state
);
10189 remote_g_packet_data_handle
=
10190 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
10192 /* Initialize the per-target state. At the moment there is only one
10193 of these, not one per target. Only one target is active at a
10194 time. The default buffer size is unimportant; it will be expanded
10195 whenever a larger buffer is needed. */
10196 rs
= get_remote_state_raw ();
10197 rs
->buf_size
= 400;
10198 rs
->buf
= xmalloc (rs
->buf_size
);
10200 init_remote_ops ();
10201 add_target (&remote_ops
);
10203 init_extended_remote_ops ();
10204 add_target (&extended_remote_ops
);
10206 /* Hook into new objfile notification. */
10207 observer_attach_new_objfile (remote_new_objfile
);
10209 /* Set up signal handlers. */
10210 sigint_remote_token
=
10211 create_async_signal_handler (async_remote_interrupt
, NULL
);
10212 sigint_remote_twice_token
=
10213 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
10216 init_remote_threadtests ();
10219 /* set/show remote ... */
10221 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
10222 Remote protocol specific variables\n\
10223 Configure various remote-protocol specific variables such as\n\
10224 the packets being used"),
10225 &remote_set_cmdlist
, "set remote ",
10226 0 /* allow-unknown */, &setlist
);
10227 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
10228 Remote protocol specific variables\n\
10229 Configure various remote-protocol specific variables such as\n\
10230 the packets being used"),
10231 &remote_show_cmdlist
, "show remote ",
10232 0 /* allow-unknown */, &showlist
);
10234 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
10235 Compare section data on target to the exec file.\n\
10236 Argument is a single section name (default: all loaded sections)."),
10239 add_cmd ("packet", class_maintenance
, packet_command
, _("\
10240 Send an arbitrary packet to a remote target.\n\
10241 maintenance packet TEXT\n\
10242 If GDB is talking to an inferior via the GDB serial protocol, then\n\
10243 this command sends the string TEXT to the inferior, and displays the\n\
10244 response packet. GDB supplies the initial `$' character, and the\n\
10245 terminating `#' character and checksum."),
10248 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
10249 Set whether to send break if interrupted."), _("\
10250 Show whether to send break if interrupted."), _("\
10251 If set, a break, instead of a cntrl-c, is sent to the remote target."),
10252 set_remotebreak
, show_remotebreak
,
10253 &setlist
, &showlist
);
10254 cmd_name
= "remotebreak";
10255 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
10256 deprecate_cmd (cmd
, "set remote interrupt-sequence");
10257 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
10258 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
10259 deprecate_cmd (cmd
, "show remote interrupt-sequence");
10261 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
10262 interrupt_sequence_modes
, &interrupt_sequence_mode
, _("\
10263 Set interrupt sequence to remote target."), _("\
10264 Show interrupt sequence to remote target."), _("\
10265 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10266 NULL
, show_interrupt_sequence
,
10267 &remote_set_cmdlist
,
10268 &remote_show_cmdlist
);
10270 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10271 &interrupt_on_connect
, _("\
10272 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10273 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10274 If set, interrupt sequence is sent to remote target."),
10276 &remote_set_cmdlist
, &remote_show_cmdlist
);
10278 /* Install commands for configuring memory read/write packets. */
10280 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10281 Set the maximum number of bytes per memory write packet (deprecated)."),
10283 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10284 Show the maximum number of bytes per memory write packet (deprecated)."),
10286 add_cmd ("memory-write-packet-size", no_class
,
10287 set_memory_write_packet_size
, _("\
10288 Set the maximum number of bytes per memory-write packet.\n\
10289 Specify the number of bytes in a packet or 0 (zero) for the\n\
10290 default packet size. The actual limit is further reduced\n\
10291 dependent on the target. Specify ``fixed'' to disable the\n\
10292 further restriction and ``limit'' to enable that restriction."),
10293 &remote_set_cmdlist
);
10294 add_cmd ("memory-read-packet-size", no_class
,
10295 set_memory_read_packet_size
, _("\
10296 Set the maximum number of bytes per memory-read packet.\n\
10297 Specify the number of bytes in a packet or 0 (zero) for the\n\
10298 default packet size. The actual limit is further reduced\n\
10299 dependent on the target. Specify ``fixed'' to disable the\n\
10300 further restriction and ``limit'' to enable that restriction."),
10301 &remote_set_cmdlist
);
10302 add_cmd ("memory-write-packet-size", no_class
,
10303 show_memory_write_packet_size
,
10304 _("Show the maximum number of bytes per memory-write packet."),
10305 &remote_show_cmdlist
);
10306 add_cmd ("memory-read-packet-size", no_class
,
10307 show_memory_read_packet_size
,
10308 _("Show the maximum number of bytes per memory-read packet."),
10309 &remote_show_cmdlist
);
10311 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10312 &remote_hw_watchpoint_limit
, _("\
10313 Set the maximum number of target hardware watchpoints."), _("\
10314 Show the maximum number of target hardware watchpoints."), _("\
10315 Specify a negative limit for unlimited."),
10316 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
10317 &remote_set_cmdlist
, &remote_show_cmdlist
);
10318 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10319 &remote_hw_breakpoint_limit
, _("\
10320 Set the maximum number of target hardware breakpoints."), _("\
10321 Show the maximum number of target hardware breakpoints."), _("\
10322 Specify a negative limit for unlimited."),
10323 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
10324 &remote_set_cmdlist
, &remote_show_cmdlist
);
10326 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
10327 &remote_address_size
, _("\
10328 Set the maximum size of the address (in bits) in a memory packet."), _("\
10329 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
10331 NULL
, /* FIXME: i18n: */
10332 &setlist
, &showlist
);
10334 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
10335 "X", "binary-download", 1);
10337 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
10338 "vCont", "verbose-resume", 0);
10340 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
10341 "QPassSignals", "pass-signals", 0);
10343 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
10344 "qSymbol", "symbol-lookup", 0);
10346 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
10347 "P", "set-register", 1);
10349 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
10350 "p", "fetch-register", 1);
10352 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
10353 "Z0", "software-breakpoint", 0);
10355 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
10356 "Z1", "hardware-breakpoint", 0);
10358 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
10359 "Z2", "write-watchpoint", 0);
10361 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
10362 "Z3", "read-watchpoint", 0);
10364 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
10365 "Z4", "access-watchpoint", 0);
10367 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
10368 "qXfer:auxv:read", "read-aux-vector", 0);
10370 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
10371 "qXfer:features:read", "target-features", 0);
10373 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
10374 "qXfer:libraries:read", "library-info", 0);
10376 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
10377 "qXfer:memory-map:read", "memory-map", 0);
10379 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
10380 "qXfer:spu:read", "read-spu-object", 0);
10382 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
10383 "qXfer:spu:write", "write-spu-object", 0);
10385 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
10386 "qXfer:osdata:read", "osdata", 0);
10388 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
10389 "qXfer:threads:read", "threads", 0);
10391 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
10392 "qXfer:siginfo:read", "read-siginfo-object", 0);
10394 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
10395 "qXfer:siginfo:write", "write-siginfo-object", 0);
10397 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
10398 "qGetTLSAddr", "get-thread-local-storage-address",
10401 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
10402 "qGetTIBAddr", "get-thread-information-block-address",
10405 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
10406 "bc", "reverse-continue", 0);
10408 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
10409 "bs", "reverse-step", 0);
10411 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
10412 "qSupported", "supported-packets", 0);
10414 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
10415 "qSearch:memory", "search-memory", 0);
10417 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
10418 "vFile:open", "hostio-open", 0);
10420 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
10421 "vFile:pread", "hostio-pread", 0);
10423 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
10424 "vFile:pwrite", "hostio-pwrite", 0);
10426 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
10427 "vFile:close", "hostio-close", 0);
10429 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
10430 "vFile:unlink", "hostio-unlink", 0);
10432 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
10433 "vAttach", "attach", 0);
10435 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
10438 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
10439 "QStartNoAckMode", "noack", 0);
10441 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
10442 "vKill", "kill", 0);
10444 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
10445 "qAttached", "query-attached", 0);
10447 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
10448 "ConditionalTracepoints", "conditional-tracepoints", 0);
10449 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10450 "FastTracepoints", "fast-tracepoints", 0);
10452 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
10453 "TracepointSource", "TracepointSource", 0);
10455 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10456 Z sub-packet has its own set and show commands, but users may
10457 have sets to this variable in their .gdbinit files (or in their
10459 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10460 &remote_Z_packet_detect
, _("\
10461 Set use of remote protocol `Z' packets"), _("\
10462 Show use of remote protocol `Z' packets "), _("\
10463 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10465 set_remote_protocol_Z_packet_cmd
,
10466 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
10467 &remote_set_cmdlist
, &remote_show_cmdlist
);
10469 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10470 Manipulate files on the remote system\n\
10471 Transfer files to and from the remote target system."),
10472 &remote_cmdlist
, "remote ",
10473 0 /* allow-unknown */, &cmdlist
);
10475 add_cmd ("put", class_files
, remote_put_command
,
10476 _("Copy a local file to the remote system."),
10479 add_cmd ("get", class_files
, remote_get_command
,
10480 _("Copy a remote file to the local system."),
10483 add_cmd ("delete", class_files
, remote_delete_command
,
10484 _("Delete a remote file."),
10487 remote_exec_file
= xstrdup ("");
10488 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10489 &remote_exec_file
, _("\
10490 Set the remote pathname for \"run\""), _("\
10491 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10492 &remote_set_cmdlist
, &remote_show_cmdlist
);
10494 /* Eventually initialize fileio. See fileio.c */
10495 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10497 /* Take advantage of the fact that the LWP field is not used, to tag
10498 special ptids with it set to != 0. */
10499 magic_null_ptid
= ptid_build (42000, 1, -1);
10500 not_sent_ptid
= ptid_build (42000, 1, -2);
10501 any_thread_ptid
= ptid_build (42000, 1, 0);
10503 target_buf_size
= 2048;
10504 target_buf
= xmalloc (target_buf_size
);