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);
434 error (_("Target does not support this command."));
435 else if (buf
[0] == 'E')
437 else if (buf
[0] == 'O' &&
439 remote_console_output (buf
+ 1); /* 'O' message from stub */
441 return buf
; /* here's the actual reply */
446 /* Handle for retreving the remote protocol data from gdbarch. */
447 static struct gdbarch_data
*remote_gdbarch_data_handle
;
449 static struct remote_arch_state
*
450 get_remote_arch_state (void)
452 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
455 /* Fetch the global remote target state. */
457 static struct remote_state
*
458 get_remote_state (void)
460 /* Make sure that the remote architecture state has been
461 initialized, because doing so might reallocate rs->buf. Any
462 function which calls getpkt also needs to be mindful of changes
463 to rs->buf, but this call limits the number of places which run
465 get_remote_arch_state ();
467 return get_remote_state_raw ();
471 compare_pnums (const void *lhs_
, const void *rhs_
)
473 const struct packet_reg
* const *lhs
= lhs_
;
474 const struct packet_reg
* const *rhs
= rhs_
;
476 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
478 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
485 init_remote_state (struct gdbarch
*gdbarch
)
487 int regnum
, num_remote_regs
, offset
;
488 struct remote_state
*rs
= get_remote_state_raw ();
489 struct remote_arch_state
*rsa
;
490 struct packet_reg
**remote_regs
;
492 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
494 /* Use the architecture to build a regnum<->pnum table, which will be
495 1:1 unless a feature set specifies otherwise. */
496 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
497 gdbarch_num_regs (gdbarch
),
499 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
501 struct packet_reg
*r
= &rsa
->regs
[regnum
];
503 if (register_size (gdbarch
, regnum
) == 0)
504 /* Do not try to fetch zero-sized (placeholder) registers. */
507 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
512 /* Define the g/G packet format as the contents of each register
513 with a remote protocol number, in order of ascending protocol
516 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
517 * sizeof (struct packet_reg
*));
518 for (num_remote_regs
= 0, regnum
= 0;
519 regnum
< gdbarch_num_regs (gdbarch
);
521 if (rsa
->regs
[regnum
].pnum
!= -1)
522 remote_regs
[num_remote_regs
++] = &rsa
->regs
[regnum
];
524 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
527 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
529 remote_regs
[regnum
]->in_g_packet
= 1;
530 remote_regs
[regnum
]->offset
= offset
;
531 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
534 /* Record the maximum possible size of the g packet - it may turn out
536 rsa
->sizeof_g_packet
= offset
;
538 /* Default maximum number of characters in a packet body. Many
539 remote stubs have a hardwired buffer size of 400 bytes
540 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
541 as the maximum packet-size to ensure that the packet and an extra
542 NUL character can always fit in the buffer. This stops GDB
543 trashing stubs that try to squeeze an extra NUL into what is
544 already a full buffer (As of 1999-12-04 that was most stubs). */
545 rsa
->remote_packet_size
= 400 - 1;
547 /* This one is filled in when a ``g'' packet is received. */
548 rsa
->actual_register_packet_size
= 0;
550 /* Should rsa->sizeof_g_packet needs more space than the
551 default, adjust the size accordingly. Remember that each byte is
552 encoded as two characters. 32 is the overhead for the packet
553 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
554 (``$NN:G...#NN'') is a better guess, the below has been padded a
556 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
557 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
559 /* Make sure that the packet buffer is plenty big enough for
560 this architecture. */
561 if (rs
->buf_size
< rsa
->remote_packet_size
)
563 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
564 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
570 /* Return the current allowed size of a remote packet. This is
571 inferred from the current architecture, and should be used to
572 limit the length of outgoing packets. */
574 get_remote_packet_size (void)
576 struct remote_state
*rs
= get_remote_state ();
577 struct remote_arch_state
*rsa
= get_remote_arch_state ();
579 if (rs
->explicit_packet_size
)
580 return rs
->explicit_packet_size
;
582 return rsa
->remote_packet_size
;
585 static struct packet_reg
*
586 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
588 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
592 struct packet_reg
*r
= &rsa
->regs
[regnum
];
593 gdb_assert (r
->regnum
== regnum
);
598 static struct packet_reg
*
599 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
602 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
604 struct packet_reg
*r
= &rsa
->regs
[i
];
611 /* FIXME: graces/2002-08-08: These variables should eventually be
612 bound to an instance of the target object (as in gdbarch-tdep()),
613 when such a thing exists. */
615 /* This is set to the data address of the access causing the target
616 to stop for a watchpoint. */
617 static CORE_ADDR remote_watch_data_address
;
619 /* This is non-zero if target stopped for a watchpoint. */
620 static int remote_stopped_by_watchpoint_p
;
622 static struct target_ops remote_ops
;
624 static struct target_ops extended_remote_ops
;
626 static int remote_async_mask_value
= 1;
628 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
629 ``forever'' still use the normal timeout mechanism. This is
630 currently used by the ASYNC code to guarentee that target reads
631 during the initial connect always time-out. Once getpkt has been
632 modified to return a timeout indication and, in turn
633 remote_wait()/wait_for_inferior() have gained a timeout parameter
635 static int wait_forever_enabled_p
= 1;
637 /* Allow the user to specify what sequence to send to the remote
638 when he requests a program interruption: Although ^C is usually
639 what remote systems expect (this is the default, here), it is
640 sometimes preferable to send a break. On other systems such
641 as the Linux kernel, a break followed by g, which is Magic SysRq g
642 is required in order to interrupt the execution. */
643 const char interrupt_sequence_control_c
[] = "Ctrl-C";
644 const char interrupt_sequence_break
[] = "BREAK";
645 const char interrupt_sequence_break_g
[] = "BREAK-g";
646 static const char *interrupt_sequence_modes
[] =
648 interrupt_sequence_control_c
,
649 interrupt_sequence_break
,
650 interrupt_sequence_break_g
,
653 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
656 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
657 struct cmd_list_element
*c
,
660 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
661 fprintf_filtered (file
,
662 _("Send the ASCII ETX character (Ctrl-c) "
663 "to the remote target to interrupt the "
664 "execution of the program.\n"));
665 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
666 fprintf_filtered (file
,
667 _("send a break signal to the remote target "
668 "to interrupt the execution of the program.\n"));
669 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
670 fprintf_filtered (file
,
671 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
672 "the remote target to interrupt the execution "
673 "of Linux kernel.\n"));
675 internal_error (__FILE__
, __LINE__
,
676 _("Invalid value for interrupt_sequence_mode: %s."),
677 interrupt_sequence_mode
);
680 /* This boolean variable specifies whether interrupt_sequence is sent
681 to the remote target when gdb connects to it.
682 This is mostly needed when you debug the Linux kernel: The Linux kernel
683 expects BREAK g which is Magic SysRq g for connecting gdb. */
684 static int interrupt_on_connect
= 0;
686 /* This variable is used to implement the "set/show remotebreak" commands.
687 Since these commands are now deprecated in favor of "set/show remote
688 interrupt-sequence", it no longer has any effect on the code. */
689 static int remote_break
;
692 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
695 interrupt_sequence_mode
= interrupt_sequence_break
;
697 interrupt_sequence_mode
= interrupt_sequence_control_c
;
701 show_remotebreak (struct ui_file
*file
, int from_tty
,
702 struct cmd_list_element
*c
,
707 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
708 remote_open knows that we don't have a file open when the program
710 static struct serial
*remote_desc
= NULL
;
712 /* This variable sets the number of bits in an address that are to be
713 sent in a memory ("M" or "m") packet. Normally, after stripping
714 leading zeros, the entire address would be sent. This variable
715 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
716 initial implementation of remote.c restricted the address sent in
717 memory packets to ``host::sizeof long'' bytes - (typically 32
718 bits). Consequently, for 64 bit targets, the upper 32 bits of an
719 address was never sent. Since fixing this bug may cause a break in
720 some remote targets this variable is principly provided to
721 facilitate backward compatibility. */
723 static int remote_address_size
;
725 /* Temporary to track who currently owns the terminal. See
726 remote_terminal_* for more details. */
728 static int remote_async_terminal_ours_p
;
730 /* The executable file to use for "run" on the remote side. */
732 static char *remote_exec_file
= "";
735 /* User configurable variables for the number of characters in a
736 memory read/write packet. MIN (rsa->remote_packet_size,
737 rsa->sizeof_g_packet) is the default. Some targets need smaller
738 values (fifo overruns, et.al.) and some users need larger values
739 (speed up transfers). The variables ``preferred_*'' (the user
740 request), ``current_*'' (what was actually set) and ``forced_*''
741 (Positive - a soft limit, negative - a hard limit). */
743 struct memory_packet_config
750 /* Compute the current size of a read/write packet. Since this makes
751 use of ``actual_register_packet_size'' the computation is dynamic. */
754 get_memory_packet_size (struct memory_packet_config
*config
)
756 struct remote_state
*rs
= get_remote_state ();
757 struct remote_arch_state
*rsa
= get_remote_arch_state ();
759 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
760 law?) that some hosts don't cope very well with large alloca()
761 calls. Eventually the alloca() code will be replaced by calls to
762 xmalloc() and make_cleanups() allowing this restriction to either
763 be lifted or removed. */
764 #ifndef MAX_REMOTE_PACKET_SIZE
765 #define MAX_REMOTE_PACKET_SIZE 16384
767 /* NOTE: 20 ensures we can write at least one byte. */
768 #ifndef MIN_REMOTE_PACKET_SIZE
769 #define MIN_REMOTE_PACKET_SIZE 20
774 if (config
->size
<= 0)
775 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
777 what_they_get
= config
->size
;
781 what_they_get
= get_remote_packet_size ();
782 /* Limit the packet to the size specified by the user. */
784 && what_they_get
> config
->size
)
785 what_they_get
= config
->size
;
787 /* Limit it to the size of the targets ``g'' response unless we have
788 permission from the stub to use a larger packet size. */
789 if (rs
->explicit_packet_size
== 0
790 && rsa
->actual_register_packet_size
> 0
791 && what_they_get
> rsa
->actual_register_packet_size
)
792 what_they_get
= rsa
->actual_register_packet_size
;
794 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
795 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
796 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
797 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
799 /* Make sure there is room in the global buffer for this packet
800 (including its trailing NUL byte). */
801 if (rs
->buf_size
< what_they_get
+ 1)
803 rs
->buf_size
= 2 * what_they_get
;
804 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
807 return what_they_get
;
810 /* Update the size of a read/write packet. If they user wants
811 something really big then do a sanity check. */
814 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
816 int fixed_p
= config
->fixed_p
;
817 long size
= config
->size
;
819 error (_("Argument required (integer, `fixed' or `limited')."));
820 else if (strcmp (args
, "hard") == 0
821 || strcmp (args
, "fixed") == 0)
823 else if (strcmp (args
, "soft") == 0
824 || strcmp (args
, "limit") == 0)
829 size
= strtoul (args
, &end
, 0);
831 error (_("Invalid %s (bad syntax)."), config
->name
);
833 /* Instead of explicitly capping the size of a packet to
834 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
835 instead allowed to set the size to something arbitrarily
837 if (size
> MAX_REMOTE_PACKET_SIZE
)
838 error (_("Invalid %s (too large)."), config
->name
);
842 if (fixed_p
&& !config
->fixed_p
)
844 if (! query (_("The target may not be able to correctly handle a %s\n"
845 "of %ld bytes. Change the packet size? "),
847 error (_("Packet size not changed."));
849 /* Update the config. */
850 config
->fixed_p
= fixed_p
;
855 show_memory_packet_size (struct memory_packet_config
*config
)
857 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
859 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
860 get_memory_packet_size (config
));
862 printf_filtered (_("Packets are limited to %ld bytes.\n"),
863 get_memory_packet_size (config
));
866 static struct memory_packet_config memory_write_packet_config
=
868 "memory-write-packet-size",
872 set_memory_write_packet_size (char *args
, int from_tty
)
874 set_memory_packet_size (args
, &memory_write_packet_config
);
878 show_memory_write_packet_size (char *args
, int from_tty
)
880 show_memory_packet_size (&memory_write_packet_config
);
884 get_memory_write_packet_size (void)
886 return get_memory_packet_size (&memory_write_packet_config
);
889 static struct memory_packet_config memory_read_packet_config
=
891 "memory-read-packet-size",
895 set_memory_read_packet_size (char *args
, int from_tty
)
897 set_memory_packet_size (args
, &memory_read_packet_config
);
901 show_memory_read_packet_size (char *args
, int from_tty
)
903 show_memory_packet_size (&memory_read_packet_config
);
907 get_memory_read_packet_size (void)
909 long size
= get_memory_packet_size (&memory_read_packet_config
);
910 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
911 extra buffer size argument before the memory read size can be
912 increased beyond this. */
913 if (size
> get_remote_packet_size ())
914 size
= get_remote_packet_size ();
919 /* Generic configuration support for packets the stub optionally
920 supports. Allows the user to specify the use of the packet as well
921 as allowing GDB to auto-detect support in the remote stub. */
925 PACKET_SUPPORT_UNKNOWN
= 0,
934 enum auto_boolean detect
;
935 enum packet_support support
;
938 /* Analyze a packet's return value and update the packet config
949 update_packet_config (struct packet_config
*config
)
951 switch (config
->detect
)
953 case AUTO_BOOLEAN_TRUE
:
954 config
->support
= PACKET_ENABLE
;
956 case AUTO_BOOLEAN_FALSE
:
957 config
->support
= PACKET_DISABLE
;
959 case AUTO_BOOLEAN_AUTO
:
960 config
->support
= PACKET_SUPPORT_UNKNOWN
;
966 show_packet_config_cmd (struct packet_config
*config
)
968 char *support
= "internal-error";
969 switch (config
->support
)
975 support
= "disabled";
977 case PACKET_SUPPORT_UNKNOWN
:
981 switch (config
->detect
)
983 case AUTO_BOOLEAN_AUTO
:
984 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
985 config
->name
, support
);
987 case AUTO_BOOLEAN_TRUE
:
988 case AUTO_BOOLEAN_FALSE
:
989 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
990 config
->name
, support
);
996 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
997 const char *title
, int legacy
)
1003 config
->name
= name
;
1004 config
->title
= title
;
1005 config
->detect
= AUTO_BOOLEAN_AUTO
;
1006 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1007 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1009 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
1011 /* set/show TITLE-packet {auto,on,off} */
1012 cmd_name
= xstrprintf ("%s-packet", title
);
1013 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1014 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
1015 set_remote_protocol_packet_cmd
,
1016 show_remote_protocol_packet_cmd
,
1017 &remote_set_cmdlist
, &remote_show_cmdlist
);
1018 /* The command code copies the documentation strings. */
1021 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1025 legacy_name
= xstrprintf ("%s-packet", name
);
1026 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1027 &remote_set_cmdlist
);
1028 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1029 &remote_show_cmdlist
);
1033 static enum packet_result
1034 packet_check_result (const char *buf
)
1038 /* The stub recognized the packet request. Check that the
1039 operation succeeded. */
1041 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1043 /* "Enn" - definitly an error. */
1044 return PACKET_ERROR
;
1046 /* Always treat "E." as an error. This will be used for
1047 more verbose error messages, such as E.memtypes. */
1048 if (buf
[0] == 'E' && buf
[1] == '.')
1049 return PACKET_ERROR
;
1051 /* The packet may or may not be OK. Just assume it is. */
1055 /* The stub does not support the packet. */
1056 return PACKET_UNKNOWN
;
1059 static enum packet_result
1060 packet_ok (const char *buf
, struct packet_config
*config
)
1062 enum packet_result result
;
1064 result
= packet_check_result (buf
);
1069 /* The stub recognized the packet request. */
1070 switch (config
->support
)
1072 case PACKET_SUPPORT_UNKNOWN
:
1074 fprintf_unfiltered (gdb_stdlog
,
1075 "Packet %s (%s) is supported\n",
1076 config
->name
, config
->title
);
1077 config
->support
= PACKET_ENABLE
;
1079 case PACKET_DISABLE
:
1080 internal_error (__FILE__
, __LINE__
,
1081 _("packet_ok: attempt to use a disabled packet"));
1087 case PACKET_UNKNOWN
:
1088 /* The stub does not support the packet. */
1089 switch (config
->support
)
1092 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1093 /* If the stub previously indicated that the packet was
1094 supported then there is a protocol error.. */
1095 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1096 config
->name
, config
->title
);
1098 /* The user set it wrong. */
1099 error (_("Enabled packet %s (%s) not recognized by stub"),
1100 config
->name
, config
->title
);
1102 case PACKET_SUPPORT_UNKNOWN
:
1104 fprintf_unfiltered (gdb_stdlog
,
1105 "Packet %s (%s) is NOT supported\n",
1106 config
->name
, config
->title
);
1107 config
->support
= PACKET_DISABLE
;
1109 case PACKET_DISABLE
:
1131 PACKET_vFile_pwrite
,
1133 PACKET_vFile_unlink
,
1135 PACKET_qXfer_features
,
1136 PACKET_qXfer_libraries
,
1137 PACKET_qXfer_memory_map
,
1138 PACKET_qXfer_spu_read
,
1139 PACKET_qXfer_spu_write
,
1140 PACKET_qXfer_osdata
,
1141 PACKET_qXfer_threads
,
1144 PACKET_QPassSignals
,
1145 PACKET_qSearch_memory
,
1148 PACKET_QStartNoAckMode
,
1150 PACKET_qXfer_siginfo_read
,
1151 PACKET_qXfer_siginfo_write
,
1153 PACKET_ConditionalTracepoints
,
1154 PACKET_FastTracepoints
,
1157 PACKET_TracepointSource
,
1161 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1164 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1165 struct cmd_list_element
*c
)
1167 struct packet_config
*packet
;
1169 for (packet
= remote_protocol_packets
;
1170 packet
< &remote_protocol_packets
[PACKET_MAX
];
1173 if (&packet
->detect
== c
->var
)
1175 update_packet_config (packet
);
1179 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1184 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1185 struct cmd_list_element
*c
,
1188 struct packet_config
*packet
;
1190 for (packet
= remote_protocol_packets
;
1191 packet
< &remote_protocol_packets
[PACKET_MAX
];
1194 if (&packet
->detect
== c
->var
)
1196 show_packet_config_cmd (packet
);
1200 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1204 /* Should we try one of the 'Z' requests? */
1208 Z_PACKET_SOFTWARE_BP
,
1209 Z_PACKET_HARDWARE_BP
,
1216 /* For compatibility with older distributions. Provide a ``set remote
1217 Z-packet ...'' command that updates all the Z packet types. */
1219 static enum auto_boolean remote_Z_packet_detect
;
1222 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1223 struct cmd_list_element
*c
)
1226 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1228 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1229 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1234 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1235 struct cmd_list_element
*c
,
1239 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1241 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1245 /* Should we try the 'ThreadInfo' query packet?
1247 This variable (NOT available to the user: auto-detect only!)
1248 determines whether GDB will use the new, simpler "ThreadInfo"
1249 query or the older, more complex syntax for thread queries.
1250 This is an auto-detect variable (set to true at each connect,
1251 and set to false when the target fails to recognize it). */
1253 static int use_threadinfo_query
;
1254 static int use_threadextra_query
;
1256 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1257 static struct async_signal_handler
*sigint_remote_twice_token
;
1258 static struct async_signal_handler
*sigint_remote_token
;
1261 /* Asynchronous signal handle registered as event loop source for
1262 when we have pending events ready to be passed to the core. */
1264 static struct async_event_handler
*remote_async_inferior_event_token
;
1266 /* Asynchronous signal handle registered as event loop source for when
1267 the remote sent us a %Stop notification. The registered callback
1268 will do a vStopped sequence to pull the rest of the events out of
1269 the remote side into our event queue. */
1271 static struct async_event_handler
*remote_async_get_pending_events_token
;
1274 static ptid_t magic_null_ptid
;
1275 static ptid_t not_sent_ptid
;
1276 static ptid_t any_thread_ptid
;
1278 /* These are the threads which we last sent to the remote system. The
1279 TID member will be -1 for all or -2 for not sent yet. */
1281 static ptid_t general_thread
;
1282 static ptid_t continue_thread
;
1284 /* Find out if the stub attached to PID (and hence GDB should offer to
1285 detach instead of killing it when bailing out). */
1288 remote_query_attached (int pid
)
1290 struct remote_state
*rs
= get_remote_state ();
1292 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1295 if (remote_multi_process_p (rs
))
1296 sprintf (rs
->buf
, "qAttached:%x", pid
);
1298 sprintf (rs
->buf
, "qAttached");
1301 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1303 switch (packet_ok (rs
->buf
,
1304 &remote_protocol_packets
[PACKET_qAttached
]))
1307 if (strcmp (rs
->buf
, "1") == 0)
1311 warning (_("Remote failure reply: %s"), rs
->buf
);
1313 case PACKET_UNKNOWN
:
1320 /* Add PID to GDB's inferior table. Since we can be connected to a
1321 remote system before before knowing about any inferior, mark the
1322 target with execution when we find the first inferior. If ATTACHED
1323 is 1, then we had just attached to this inferior. If it is 0, then
1324 we just created this inferior. If it is -1, then try querying the
1325 remote stub to find out if it had attached to the inferior or
1328 static struct inferior
*
1329 remote_add_inferior (int pid
, int attached
)
1331 struct inferior
*inf
;
1333 /* Check whether this process we're learning about is to be
1334 considered attached, or if is to be considered to have been
1335 spawned by the stub. */
1337 attached
= remote_query_attached (pid
);
1339 if (gdbarch_has_global_solist (target_gdbarch
))
1341 /* If the target shares code across all inferiors, then every
1342 attach adds a new inferior. */
1343 inf
= add_inferior (pid
);
1345 /* ... and every inferior is bound to the same program space.
1346 However, each inferior may still have its own address
1348 inf
->aspace
= maybe_new_address_space ();
1349 inf
->pspace
= current_program_space
;
1353 /* In the traditional debugging scenario, there's a 1-1 match
1354 between program/address spaces. We simply bind the inferior
1355 to the program space's address space. */
1356 inf
= current_inferior ();
1357 inferior_appeared (inf
, pid
);
1360 inf
->attach_flag
= attached
;
1365 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1366 according to RUNNING. */
1369 remote_add_thread (ptid_t ptid
, int running
)
1373 set_executing (ptid
, running
);
1374 set_running (ptid
, running
);
1377 /* Come here when we learn about a thread id from the remote target.
1378 It may be the first time we hear about such thread, so take the
1379 opportunity to add it to GDB's thread list. In case this is the
1380 first time we're noticing its corresponding inferior, add it to
1381 GDB's inferior list as well. */
1384 remote_notice_new_inferior (ptid_t currthread
, int running
)
1386 /* If this is a new thread, add it to GDB's thread list.
1387 If we leave it up to WFI to do this, bad things will happen. */
1389 if (in_thread_list (currthread
) && is_exited (currthread
))
1391 /* We're seeing an event on a thread id we knew had exited.
1392 This has to be a new thread reusing the old id. Add it. */
1393 remote_add_thread (currthread
, running
);
1397 if (!in_thread_list (currthread
))
1399 struct inferior
*inf
= NULL
;
1400 int pid
= ptid_get_pid (currthread
);
1402 if (ptid_is_pid (inferior_ptid
)
1403 && pid
== ptid_get_pid (inferior_ptid
))
1405 /* inferior_ptid has no thread member yet. This can happen
1406 with the vAttach -> remote_wait,"TAAthread:" path if the
1407 stub doesn't support qC. This is the first stop reported
1408 after an attach, so this is the main thread. Update the
1409 ptid in the thread list. */
1410 if (in_thread_list (pid_to_ptid (pid
)))
1411 thread_change_ptid (inferior_ptid
, currthread
);
1414 remote_add_thread (currthread
, running
);
1415 inferior_ptid
= currthread
;
1420 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1422 /* inferior_ptid is not set yet. This can happen with the
1423 vRun -> remote_wait,"TAAthread:" path if the stub
1424 doesn't support qC. This is the first stop reported
1425 after an attach, so this is the main thread. Update the
1426 ptid in the thread list. */
1427 thread_change_ptid (inferior_ptid
, currthread
);
1431 /* When connecting to a target remote, or to a target
1432 extended-remote which already was debugging an inferior, we
1433 may not know about it yet. Add it before adding its child
1434 thread, so notifications are emitted in a sensible order. */
1435 if (!in_inferior_list (ptid_get_pid (currthread
)))
1436 inf
= remote_add_inferior (ptid_get_pid (currthread
), -1);
1438 /* This is really a new thread. Add it. */
1439 remote_add_thread (currthread
, running
);
1441 /* If we found a new inferior, let the common code do whatever
1442 it needs to with it (e.g., read shared libraries, insert
1445 notice_new_inferior (currthread
, running
, 0);
1449 /* Return the private thread data, creating it if necessary. */
1451 struct private_thread_info
*
1452 demand_private_info (ptid_t ptid
)
1454 struct thread_info
*info
= find_thread_ptid (ptid
);
1460 info
->private = xmalloc (sizeof (*(info
->private)));
1461 info
->private_dtor
= free_private_thread_info
;
1462 info
->private->core
= -1;
1463 info
->private->extra
= 0;
1466 return info
->private;
1469 /* Call this function as a result of
1470 1) A halt indication (T packet) containing a thread id
1471 2) A direct query of currthread
1472 3) Successful execution of set thread
1476 record_currthread (ptid_t currthread
)
1478 general_thread
= currthread
;
1481 static char *last_pass_packet
;
1483 /* If 'QPassSignals' is supported, tell the remote stub what signals
1484 it can simply pass through to the inferior without reporting. */
1487 remote_pass_signals (void)
1489 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1491 char *pass_packet
, *p
;
1492 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1495 gdb_assert (numsigs
< 256);
1496 for (i
= 0; i
< numsigs
; i
++)
1498 if (signal_stop_state (i
) == 0
1499 && signal_print_state (i
) == 0
1500 && signal_pass_state (i
) == 1)
1503 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1504 strcpy (pass_packet
, "QPassSignals:");
1505 p
= pass_packet
+ strlen (pass_packet
);
1506 for (i
= 0; i
< numsigs
; i
++)
1508 if (signal_stop_state (i
) == 0
1509 && signal_print_state (i
) == 0
1510 && signal_pass_state (i
) == 1)
1513 *p
++ = tohex (i
>> 4);
1514 *p
++ = tohex (i
& 15);
1523 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1525 struct remote_state
*rs
= get_remote_state ();
1526 char *buf
= rs
->buf
;
1528 putpkt (pass_packet
);
1529 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1530 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1531 if (last_pass_packet
)
1532 xfree (last_pass_packet
);
1533 last_pass_packet
= pass_packet
;
1536 xfree (pass_packet
);
1540 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1541 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1542 thread. If GEN is set, set the general thread, if not, then set
1543 the step/continue thread. */
1545 set_thread (struct ptid ptid
, int gen
)
1547 struct remote_state
*rs
= get_remote_state ();
1548 ptid_t state
= gen
? general_thread
: continue_thread
;
1549 char *buf
= rs
->buf
;
1550 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1552 if (ptid_equal (state
, ptid
))
1556 *buf
++ = gen
? 'g' : 'c';
1557 if (ptid_equal (ptid
, magic_null_ptid
))
1558 xsnprintf (buf
, endbuf
- buf
, "0");
1559 else if (ptid_equal (ptid
, any_thread_ptid
))
1560 xsnprintf (buf
, endbuf
- buf
, "0");
1561 else if (ptid_equal (ptid
, minus_one_ptid
))
1562 xsnprintf (buf
, endbuf
- buf
, "-1");
1564 write_ptid (buf
, endbuf
, ptid
);
1566 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1568 general_thread
= ptid
;
1570 continue_thread
= ptid
;
1574 set_general_thread (struct ptid ptid
)
1576 set_thread (ptid
, 1);
1580 set_continue_thread (struct ptid ptid
)
1582 set_thread (ptid
, 0);
1585 /* Change the remote current process. Which thread within the process
1586 ends up selected isn't important, as long as it is the same process
1587 as what INFERIOR_PTID points to.
1589 This comes from that fact that there is no explicit notion of
1590 "selected process" in the protocol. The selected process for
1591 general operations is the process the selected general thread
1595 set_general_process (void)
1597 struct remote_state
*rs
= get_remote_state ();
1599 /* If the remote can't handle multiple processes, don't bother. */
1600 if (!remote_multi_process_p (rs
))
1603 /* We only need to change the remote current thread if it's pointing
1604 at some other process. */
1605 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1606 set_general_thread (inferior_ptid
);
1610 /* Return nonzero if the thread PTID is still alive on the remote
1614 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1616 struct remote_state
*rs
= get_remote_state ();
1619 if (ptid_equal (ptid
, magic_null_ptid
))
1620 /* The main thread is always alive. */
1623 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1624 /* The main thread is always alive. This can happen after a
1625 vAttach, if the remote side doesn't support
1630 endp
= rs
->buf
+ get_remote_packet_size ();
1633 write_ptid (p
, endp
, ptid
);
1636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1637 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1640 /* About these extended threadlist and threadinfo packets. They are
1641 variable length packets but, the fields within them are often fixed
1642 length. They are redundent enough to send over UDP as is the
1643 remote protocol in general. There is a matching unit test module
1646 #define OPAQUETHREADBYTES 8
1648 /* a 64 bit opaque identifier */
1649 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1651 /* WARNING: This threadref data structure comes from the remote O.S.,
1652 libstub protocol encoding, and remote.c. it is not particularly
1655 /* Right now, the internal structure is int. We want it to be bigger.
1659 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1661 /* gdb_ext_thread_info is an internal GDB data structure which is
1662 equivalent to the reply of the remote threadinfo packet. */
1664 struct gdb_ext_thread_info
1666 threadref threadid
; /* External form of thread reference. */
1667 int active
; /* Has state interesting to GDB?
1669 char display
[256]; /* Brief state display, name,
1670 blocked/suspended. */
1671 char shortname
[32]; /* To be used to name threads. */
1672 char more_display
[256]; /* Long info, statistics, queue depth,
1676 /* The volume of remote transfers can be limited by submitting
1677 a mask containing bits specifying the desired information.
1678 Use a union of these values as the 'selection' parameter to
1679 get_thread_info. FIXME: Make these TAG names more thread specific.
1682 #define TAG_THREADID 1
1683 #define TAG_EXISTS 2
1684 #define TAG_DISPLAY 4
1685 #define TAG_THREADNAME 8
1686 #define TAG_MOREDISPLAY 16
1688 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1690 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1692 static char *unpack_nibble (char *buf
, int *val
);
1694 static char *pack_nibble (char *buf
, int nibble
);
1696 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1698 static char *unpack_byte (char *buf
, int *value
);
1700 static char *pack_int (char *buf
, int value
);
1702 static char *unpack_int (char *buf
, int *value
);
1704 static char *unpack_string (char *src
, char *dest
, int length
);
1706 static char *pack_threadid (char *pkt
, threadref
*id
);
1708 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1710 void int_to_threadref (threadref
*id
, int value
);
1712 static int threadref_to_int (threadref
*ref
);
1714 static void copy_threadref (threadref
*dest
, threadref
*src
);
1716 static int threadmatch (threadref
*dest
, threadref
*src
);
1718 static char *pack_threadinfo_request (char *pkt
, int mode
,
1721 static int remote_unpack_thread_info_response (char *pkt
,
1722 threadref
*expectedref
,
1723 struct gdb_ext_thread_info
1727 static int remote_get_threadinfo (threadref
*threadid
,
1728 int fieldset
, /*TAG mask */
1729 struct gdb_ext_thread_info
*info
);
1731 static char *pack_threadlist_request (char *pkt
, int startflag
,
1733 threadref
*nextthread
);
1735 static int parse_threadlist_response (char *pkt
,
1737 threadref
*original_echo
,
1738 threadref
*resultlist
,
1741 static int remote_get_threadlist (int startflag
,
1742 threadref
*nextthread
,
1746 threadref
*threadlist
);
1748 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1750 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1751 void *context
, int looplimit
);
1753 static int remote_newthread_step (threadref
*ref
, void *context
);
1756 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1757 buffer we're allowed to write to. Returns
1758 BUF+CHARACTERS_WRITTEN. */
1761 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1764 struct remote_state
*rs
= get_remote_state ();
1766 if (remote_multi_process_p (rs
))
1768 pid
= ptid_get_pid (ptid
);
1770 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1772 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1774 tid
= ptid_get_tid (ptid
);
1776 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1778 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1783 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1784 passed the last parsed char. Returns null_ptid on error. */
1787 read_ptid (char *buf
, char **obuf
)
1791 ULONGEST pid
= 0, tid
= 0;
1795 /* Multi-process ptid. */
1796 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1798 error (_("invalid remote ptid: %s\n"), p
);
1801 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1804 return ptid_build (pid
, 0, tid
);
1807 /* No multi-process. Just a tid. */
1808 pp
= unpack_varlen_hex (p
, &tid
);
1810 /* Since the stub is not sending a process id, then default to
1811 what's in inferior_ptid, unless it's null at this point. If so,
1812 then since there's no way to know the pid of the reported
1813 threads, use the magic number. */
1814 if (ptid_equal (inferior_ptid
, null_ptid
))
1815 pid
= ptid_get_pid (magic_null_ptid
);
1817 pid
= ptid_get_pid (inferior_ptid
);
1821 return ptid_build (pid
, 0, tid
);
1824 /* Encode 64 bits in 16 chars of hex. */
1826 static const char hexchars
[] = "0123456789abcdef";
1829 ishex (int ch
, int *val
)
1831 if ((ch
>= 'a') && (ch
<= 'f'))
1833 *val
= ch
- 'a' + 10;
1836 if ((ch
>= 'A') && (ch
<= 'F'))
1838 *val
= ch
- 'A' + 10;
1841 if ((ch
>= '0') && (ch
<= '9'))
1852 if (ch
>= 'a' && ch
<= 'f')
1853 return ch
- 'a' + 10;
1854 if (ch
>= '0' && ch
<= '9')
1856 if (ch
>= 'A' && ch
<= 'F')
1857 return ch
- 'A' + 10;
1862 stub_unpack_int (char *buff
, int fieldlength
)
1869 nibble
= stubhex (*buff
++);
1873 retval
= retval
<< 4;
1879 unpack_varlen_hex (char *buff
, /* packet to parse */
1883 ULONGEST retval
= 0;
1885 while (ishex (*buff
, &nibble
))
1888 retval
= retval
<< 4;
1889 retval
|= nibble
& 0x0f;
1896 unpack_nibble (char *buf
, int *val
)
1898 *val
= fromhex (*buf
++);
1903 pack_nibble (char *buf
, int nibble
)
1905 *buf
++ = hexchars
[(nibble
& 0x0f)];
1910 pack_hex_byte (char *pkt
, int byte
)
1912 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1913 *pkt
++ = hexchars
[(byte
& 0xf)];
1918 unpack_byte (char *buf
, int *value
)
1920 *value
= stub_unpack_int (buf
, 2);
1925 pack_int (char *buf
, int value
)
1927 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1928 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1929 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1930 buf
= pack_hex_byte (buf
, (value
& 0xff));
1935 unpack_int (char *buf
, int *value
)
1937 *value
= stub_unpack_int (buf
, 8);
1941 #if 0 /* Currently unused, uncomment when needed. */
1942 static char *pack_string (char *pkt
, char *string
);
1945 pack_string (char *pkt
, char *string
)
1950 len
= strlen (string
);
1952 len
= 200; /* Bigger than most GDB packets, junk??? */
1953 pkt
= pack_hex_byte (pkt
, len
);
1957 if ((ch
== '\0') || (ch
== '#'))
1958 ch
= '*'; /* Protect encapsulation. */
1963 #endif /* 0 (unused) */
1966 unpack_string (char *src
, char *dest
, int length
)
1975 pack_threadid (char *pkt
, threadref
*id
)
1978 unsigned char *altid
;
1980 altid
= (unsigned char *) id
;
1981 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1983 pkt
= pack_hex_byte (pkt
, *altid
++);
1989 unpack_threadid (char *inbuf
, threadref
*id
)
1992 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1995 altref
= (char *) id
;
1997 while (inbuf
< limit
)
1999 x
= stubhex (*inbuf
++);
2000 y
= stubhex (*inbuf
++);
2001 *altref
++ = (x
<< 4) | y
;
2006 /* Externally, threadrefs are 64 bits but internally, they are still
2007 ints. This is due to a mismatch of specifications. We would like
2008 to use 64bit thread references internally. This is an adapter
2012 int_to_threadref (threadref
*id
, int value
)
2014 unsigned char *scan
;
2016 scan
= (unsigned char *) id
;
2022 *scan
++ = (value
>> 24) & 0xff;
2023 *scan
++ = (value
>> 16) & 0xff;
2024 *scan
++ = (value
>> 8) & 0xff;
2025 *scan
++ = (value
& 0xff);
2029 threadref_to_int (threadref
*ref
)
2032 unsigned char *scan
;
2038 value
= (value
<< 8) | ((*scan
++) & 0xff);
2043 copy_threadref (threadref
*dest
, threadref
*src
)
2046 unsigned char *csrc
, *cdest
;
2048 csrc
= (unsigned char *) src
;
2049 cdest
= (unsigned char *) dest
;
2056 threadmatch (threadref
*dest
, threadref
*src
)
2058 /* Things are broken right now, so just assume we got a match. */
2060 unsigned char *srcp
, *destp
;
2062 srcp
= (char *) src
;
2063 destp
= (char *) dest
;
2067 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2074 threadid:1, # always request threadid
2081 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2084 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2086 *pkt
++ = 'q'; /* Info Query */
2087 *pkt
++ = 'P'; /* process or thread info */
2088 pkt
= pack_int (pkt
, mode
); /* mode */
2089 pkt
= pack_threadid (pkt
, id
); /* threadid */
2090 *pkt
= '\0'; /* terminate */
2094 /* These values tag the fields in a thread info response packet. */
2095 /* Tagging the fields allows us to request specific fields and to
2096 add more fields as time goes by. */
2098 #define TAG_THREADID 1 /* Echo the thread identifier. */
2099 #define TAG_EXISTS 2 /* Is this process defined enough to
2100 fetch registers and its stack? */
2101 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2102 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2103 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2107 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2108 struct gdb_ext_thread_info
*info
)
2110 struct remote_state
*rs
= get_remote_state ();
2114 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2117 /* info->threadid = 0; FIXME: implement zero_threadref. */
2119 info
->display
[0] = '\0';
2120 info
->shortname
[0] = '\0';
2121 info
->more_display
[0] = '\0';
2123 /* Assume the characters indicating the packet type have been
2125 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2126 pkt
= unpack_threadid (pkt
, &ref
);
2129 warning (_("Incomplete response to threadinfo request."));
2130 if (!threadmatch (&ref
, expectedref
))
2131 { /* This is an answer to a different request. */
2132 warning (_("ERROR RMT Thread info mismatch."));
2135 copy_threadref (&info
->threadid
, &ref
);
2137 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2139 /* Packets are terminated with nulls. */
2140 while ((pkt
< limit
) && mask
&& *pkt
)
2142 pkt
= unpack_int (pkt
, &tag
); /* tag */
2143 pkt
= unpack_byte (pkt
, &length
); /* length */
2144 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2146 warning (_("ERROR RMT: threadinfo tag mismatch."));
2150 if (tag
== TAG_THREADID
)
2154 warning (_("ERROR RMT: length of threadid is not 16."));
2158 pkt
= unpack_threadid (pkt
, &ref
);
2159 mask
= mask
& ~TAG_THREADID
;
2162 if (tag
== TAG_EXISTS
)
2164 info
->active
= stub_unpack_int (pkt
, length
);
2166 mask
= mask
& ~(TAG_EXISTS
);
2169 warning (_("ERROR RMT: 'exists' length too long."));
2175 if (tag
== TAG_THREADNAME
)
2177 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2178 mask
= mask
& ~TAG_THREADNAME
;
2181 if (tag
== TAG_DISPLAY
)
2183 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2184 mask
= mask
& ~TAG_DISPLAY
;
2187 if (tag
== TAG_MOREDISPLAY
)
2189 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2190 mask
= mask
& ~TAG_MOREDISPLAY
;
2193 warning (_("ERROR RMT: unknown thread info tag."));
2194 break; /* Not a tag we know about. */
2200 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2201 struct gdb_ext_thread_info
*info
)
2203 struct remote_state
*rs
= get_remote_state ();
2206 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2208 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2210 if (rs
->buf
[0] == '\0')
2213 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2218 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2221 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2222 threadref
*nextthread
)
2224 *pkt
++ = 'q'; /* info query packet */
2225 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2226 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2227 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2228 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2233 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2236 parse_threadlist_response (char *pkt
, int result_limit
,
2237 threadref
*original_echo
, threadref
*resultlist
,
2240 struct remote_state
*rs
= get_remote_state ();
2242 int count
, resultcount
, done
;
2245 /* Assume the 'q' and 'M chars have been stripped. */
2246 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2247 /* done parse past here */
2248 pkt
= unpack_byte (pkt
, &count
); /* count field */
2249 pkt
= unpack_nibble (pkt
, &done
);
2250 /* The first threadid is the argument threadid. */
2251 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2252 while ((count
-- > 0) && (pkt
< limit
))
2254 pkt
= unpack_threadid (pkt
, resultlist
++);
2255 if (resultcount
++ >= result_limit
)
2264 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2265 int *done
, int *result_count
, threadref
*threadlist
)
2267 struct remote_state
*rs
= get_remote_state ();
2268 static threadref echo_nextthread
;
2271 /* Trancate result limit to be smaller than the packet size. */
2272 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= get_remote_packet_size ())
2273 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2275 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2279 if (*rs
->buf
== '\0')
2283 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2286 if (!threadmatch (&echo_nextthread
, nextthread
))
2288 /* FIXME: This is a good reason to drop the packet. */
2289 /* Possably, there is a duplicate response. */
2291 retransmit immediatly - race conditions
2292 retransmit after timeout - yes
2294 wait for packet, then exit
2296 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2297 return 0; /* I choose simply exiting. */
2299 if (*result_count
<= 0)
2303 warning (_("RMT ERROR : failed to get remote thread list."));
2306 return result
; /* break; */
2308 if (*result_count
> result_limit
)
2311 warning (_("RMT ERROR: threadlist response longer than requested."));
2317 /* This is the interface between remote and threads, remotes upper
2320 /* remote_find_new_threads retrieves the thread list and for each
2321 thread in the list, looks up the thread in GDB's internal list,
2322 adding the thread if it does not already exist. This involves
2323 getting partial thread lists from the remote target so, polling the
2324 quit_flag is required. */
2327 /* About this many threadisds fit in a packet. */
2329 #define MAXTHREADLISTRESULTS 32
2332 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2335 int done
, i
, result_count
;
2339 static threadref nextthread
;
2340 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2345 if (loopcount
++ > looplimit
)
2348 warning (_("Remote fetch threadlist -infinite loop-."));
2351 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2352 &done
, &result_count
, resultthreadlist
))
2357 /* Clear for later iterations. */
2359 /* Setup to resume next batch of thread references, set nextthread. */
2360 if (result_count
>= 1)
2361 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2363 while (result_count
--)
2364 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2371 remote_newthread_step (threadref
*ref
, void *context
)
2373 int pid
= ptid_get_pid (inferior_ptid
);
2374 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2376 if (!in_thread_list (ptid
))
2378 return 1; /* continue iterator */
2381 #define CRAZY_MAX_THREADS 1000
2384 remote_current_thread (ptid_t oldpid
)
2386 struct remote_state
*rs
= get_remote_state ();
2389 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2390 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2391 return read_ptid (&rs
->buf
[2], NULL
);
2396 /* Find new threads for info threads command.
2397 * Original version, using John Metzler's thread protocol.
2401 remote_find_new_threads (void)
2403 remote_threadlist_iterator (remote_newthread_step
, 0,
2407 #if defined(HAVE_LIBEXPAT)
2409 typedef struct thread_item
2415 DEF_VEC_O(thread_item_t
);
2417 struct threads_parsing_context
2419 VEC (thread_item_t
) *items
;
2423 start_thread (struct gdb_xml_parser
*parser
,
2424 const struct gdb_xml_element
*element
,
2425 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2427 struct threads_parsing_context
*data
= user_data
;
2429 struct thread_item item
;
2432 id
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
2433 item
.ptid
= read_ptid (id
, NULL
);
2435 if (VEC_length (gdb_xml_value_s
, attributes
) > 1)
2436 item
.core
= *(ULONGEST
*) VEC_index (gdb_xml_value_s
, attributes
, 1)->value
;
2442 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2446 end_thread (struct gdb_xml_parser
*parser
,
2447 const struct gdb_xml_element
*element
,
2448 void *user_data
, const char *body_text
)
2450 struct threads_parsing_context
*data
= user_data
;
2452 if (body_text
&& *body_text
)
2453 VEC_last (thread_item_t
, data
->items
)->extra
= strdup (body_text
);
2456 const struct gdb_xml_attribute thread_attributes
[] = {
2457 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2458 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2459 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2462 const struct gdb_xml_element thread_children
[] = {
2463 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2466 const struct gdb_xml_element threads_children
[] = {
2467 { "thread", thread_attributes
, thread_children
,
2468 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2469 start_thread
, end_thread
},
2470 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2473 const struct gdb_xml_element threads_elements
[] = {
2474 { "threads", NULL
, threads_children
,
2475 GDB_XML_EF_NONE
, NULL
, NULL
},
2476 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2482 * Find all threads for info threads command.
2483 * Uses new thread protocol contributed by Cisco.
2484 * Falls back and attempts to use the older method (above)
2485 * if the target doesn't respond to the new method.
2489 remote_threads_info (struct target_ops
*ops
)
2491 struct remote_state
*rs
= get_remote_state ();
2495 if (remote_desc
== 0) /* paranoia */
2496 error (_("Command can only be used when connected to the remote target."));
2498 #if defined(HAVE_LIBEXPAT)
2499 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2501 char *xml
= target_read_stralloc (¤t_target
,
2502 TARGET_OBJECT_THREADS
, NULL
);
2504 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2507 struct gdb_xml_parser
*parser
;
2508 struct threads_parsing_context context
;
2509 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2512 parser
= gdb_xml_create_parser_and_cleanup (_("threads"),
2516 gdb_xml_use_dtd (parser
, "threads.dtd");
2518 if (gdb_xml_parse (parser
, xml
) == 0)
2521 struct thread_item
*item
;
2523 for (i
= 0; VEC_iterate (thread_item_t
, context
.items
, i
, item
); ++i
)
2525 if (!ptid_equal (item
->ptid
, null_ptid
))
2527 struct private_thread_info
*info
;
2528 /* In non-stop mode, we assume new found threads
2529 are running until proven otherwise with a
2530 stop reply. In all-stop, we can only get
2531 here if all threads are stopped. */
2532 int running
= non_stop
? 1 : 0;
2534 remote_notice_new_inferior (item
->ptid
, running
);
2536 info
= demand_private_info (item
->ptid
);
2537 info
->core
= item
->core
;
2538 info
->extra
= item
->extra
;
2541 xfree (item
->extra
);
2545 VEC_free (thread_item_t
, context
.items
);
2548 do_cleanups (back_to
);
2553 if (use_threadinfo_query
)
2555 putpkt ("qfThreadInfo");
2556 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2558 if (bufp
[0] != '\0') /* q packet recognized */
2560 while (*bufp
++ == 'm') /* reply contains one or more TID */
2564 new_thread
= read_ptid (bufp
, &bufp
);
2565 if (!ptid_equal (new_thread
, null_ptid
))
2567 /* In non-stop mode, we assume new found threads
2568 are running until proven otherwise with a
2569 stop reply. In all-stop, we can only get
2570 here if all threads are stopped. */
2571 int running
= non_stop
? 1 : 0;
2573 remote_notice_new_inferior (new_thread
, running
);
2576 while (*bufp
++ == ','); /* comma-separated list */
2577 putpkt ("qsThreadInfo");
2578 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2585 /* Only qfThreadInfo is supported in non-stop mode. */
2589 /* Else fall back to old method based on jmetzler protocol. */
2590 use_threadinfo_query
= 0;
2591 remote_find_new_threads ();
2596 * Collect a descriptive string about the given thread.
2597 * The target may say anything it wants to about the thread
2598 * (typically info about its blocked / runnable state, name, etc.).
2599 * This string will appear in the info threads display.
2601 * Optional: targets are not required to implement this function.
2605 remote_threads_extra_info (struct thread_info
*tp
)
2607 struct remote_state
*rs
= get_remote_state ();
2611 struct gdb_ext_thread_info threadinfo
;
2612 static char display_buf
[100]; /* arbitrary... */
2613 int n
= 0; /* position in display_buf */
2615 if (remote_desc
== 0) /* paranoia */
2616 internal_error (__FILE__
, __LINE__
,
2617 _("remote_threads_extra_info"));
2619 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2620 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2621 /* This is the main thread which was added by GDB. The remote
2622 server doesn't know about it. */
2625 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2627 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2628 if (info
&& info
->private)
2629 return info
->private->extra
;
2634 if (use_threadextra_query
)
2637 char *endb
= rs
->buf
+ get_remote_packet_size ();
2639 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2641 write_ptid (b
, endb
, tp
->ptid
);
2644 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2645 if (rs
->buf
[0] != 0)
2647 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2648 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2649 display_buf
[result
] = '\0';
2654 /* If the above query fails, fall back to the old method. */
2655 use_threadextra_query
= 0;
2656 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2657 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2658 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2659 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2660 if (threadinfo
.active
)
2662 if (*threadinfo
.shortname
)
2663 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2664 " Name: %s,", threadinfo
.shortname
);
2665 if (*threadinfo
.display
)
2666 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2667 " State: %s,", threadinfo
.display
);
2668 if (*threadinfo
.more_display
)
2669 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2670 " Priority: %s", threadinfo
.more_display
);
2674 /* For purely cosmetic reasons, clear up trailing commas. */
2675 if (',' == display_buf
[n
-1])
2676 display_buf
[n
-1] = ' ';
2684 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2687 remote_get_ada_task_ptid (long lwp
, long thread
)
2689 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2693 /* Restart the remote side; this is an extended protocol operation. */
2696 extended_remote_restart (void)
2698 struct remote_state
*rs
= get_remote_state ();
2700 /* Send the restart command; for reasons I don't understand the
2701 remote side really expects a number after the "R". */
2702 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2705 remote_fileio_reset ();
2708 /* Clean up connection to a remote debugger. */
2711 remote_close (int quitting
)
2713 if (remote_desc
== NULL
)
2714 return; /* already closed */
2716 /* Make sure we leave stdin registered in the event loop, and we
2717 don't leave the async SIGINT signal handler installed. */
2718 remote_terminal_ours ();
2720 serial_close (remote_desc
);
2723 /* We don't have a connection to the remote stub anymore. Get rid
2724 of all the inferiors and their threads we were controlling. */
2725 discard_all_inferiors ();
2727 /* We're no longer interested in any of these events. */
2728 discard_pending_stop_replies (-1);
2730 if (remote_async_inferior_event_token
)
2731 delete_async_event_handler (&remote_async_inferior_event_token
);
2732 if (remote_async_get_pending_events_token
)
2733 delete_async_event_handler (&remote_async_get_pending_events_token
);
2736 /* Query the remote side for the text, data and bss offsets. */
2741 struct remote_state
*rs
= get_remote_state ();
2744 int lose
, num_segments
= 0, do_sections
, do_segments
;
2745 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2746 struct section_offsets
*offs
;
2747 struct symfile_segment_data
*data
;
2749 if (symfile_objfile
== NULL
)
2752 putpkt ("qOffsets");
2753 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2756 if (buf
[0] == '\000')
2757 return; /* Return silently. Stub doesn't support
2761 warning (_("Remote failure reply: %s"), buf
);
2765 /* Pick up each field in turn. This used to be done with scanf, but
2766 scanf will make trouble if CORE_ADDR size doesn't match
2767 conversion directives correctly. The following code will work
2768 with any size of CORE_ADDR. */
2769 text_addr
= data_addr
= bss_addr
= 0;
2773 if (strncmp (ptr
, "Text=", 5) == 0)
2776 /* Don't use strtol, could lose on big values. */
2777 while (*ptr
&& *ptr
!= ';')
2778 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2780 if (strncmp (ptr
, ";Data=", 6) == 0)
2783 while (*ptr
&& *ptr
!= ';')
2784 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2789 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2792 while (*ptr
&& *ptr
!= ';')
2793 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2795 if (bss_addr
!= data_addr
)
2796 warning (_("Target reported unsupported offsets: %s"), buf
);
2801 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2804 /* Don't use strtol, could lose on big values. */
2805 while (*ptr
&& *ptr
!= ';')
2806 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2809 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
2812 while (*ptr
&& *ptr
!= ';')
2813 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2821 error (_("Malformed response to offset query, %s"), buf
);
2822 else if (*ptr
!= '\0')
2823 warning (_("Target reported unsupported offsets: %s"), buf
);
2825 offs
= ((struct section_offsets
*)
2826 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
2827 memcpy (offs
, symfile_objfile
->section_offsets
,
2828 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2830 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
2831 do_segments
= (data
!= NULL
);
2832 do_sections
= num_segments
== 0;
2834 if (num_segments
> 0)
2836 segments
[0] = text_addr
;
2837 segments
[1] = data_addr
;
2839 /* If we have two segments, we can still try to relocate everything
2840 by assuming that the .text and .data offsets apply to the whole
2841 text and data segments. Convert the offsets given in the packet
2842 to base addresses for symfile_map_offsets_to_segments. */
2843 else if (data
&& data
->num_segments
== 2)
2845 segments
[0] = data
->segment_bases
[0] + text_addr
;
2846 segments
[1] = data
->segment_bases
[1] + data_addr
;
2849 /* If the object file has only one segment, assume that it is text
2850 rather than data; main programs with no writable data are rare,
2851 but programs with no code are useless. Of course the code might
2852 have ended up in the data segment... to detect that we would need
2853 the permissions here. */
2854 else if (data
&& data
->num_segments
== 1)
2856 segments
[0] = data
->segment_bases
[0] + text_addr
;
2859 /* There's no way to relocate by segment. */
2865 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
2866 offs
, num_segments
, segments
);
2868 if (ret
== 0 && !do_sections
)
2869 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
2876 free_symfile_segment_data (data
);
2880 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
2882 /* This is a temporary kludge to force data and bss to use the same offsets
2883 because that's what nlmconv does now. The real solution requires changes
2884 to the stub and remote.c that I don't have time to do right now. */
2886 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2887 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2890 objfile_relocate (symfile_objfile
, offs
);
2893 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
2894 threads we know are stopped already. This is used during the
2895 initial remote connection in non-stop mode --- threads that are
2896 reported as already being stopped are left stopped. */
2899 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
2901 /* If we have a stop reply for this thread, it must be stopped. */
2902 if (peek_stop_reply (thread
->ptid
))
2903 set_stop_requested (thread
->ptid
, 1);
2908 /* Stub for catch_exception. */
2910 struct start_remote_args
2914 /* The current target. */
2915 struct target_ops
*target
;
2917 /* Non-zero if this is an extended-remote target. */
2921 /* Send interrupt_sequence to remote target. */
2923 send_interrupt_sequence ()
2925 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
2926 serial_write (remote_desc
, "\x03", 1);
2927 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
2928 serial_send_break (remote_desc
);
2929 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
2931 serial_send_break (remote_desc
);
2932 serial_write (remote_desc
, "g", 1);
2935 internal_error (__FILE__
, __LINE__
,
2936 _("Invalid value for interrupt_sequence_mode: %s."),
2937 interrupt_sequence_mode
);
2941 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
2943 struct start_remote_args
*args
= opaque
;
2944 struct remote_state
*rs
= get_remote_state ();
2945 struct packet_config
*noack_config
;
2946 char *wait_status
= NULL
;
2948 immediate_quit
++; /* Allow user to interrupt it. */
2950 /* Ack any packet which the remote side has already sent. */
2951 serial_write (remote_desc
, "+", 1);
2953 if (interrupt_on_connect
)
2954 send_interrupt_sequence ();
2956 /* The first packet we send to the target is the optional "supported
2957 packets" request. If the target can answer this, it will tell us
2958 which later probes to skip. */
2959 remote_query_supported ();
2961 /* Next, we possibly activate noack mode.
2963 If the QStartNoAckMode packet configuration is set to AUTO,
2964 enable noack mode if the stub reported a wish for it with
2967 If set to TRUE, then enable noack mode even if the stub didn't
2968 report it in qSupported. If the stub doesn't reply OK, the
2969 session ends with an error.
2971 If FALSE, then don't activate noack mode, regardless of what the
2972 stub claimed should be the default with qSupported. */
2974 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
2976 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
2977 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
2978 && noack_config
->support
== PACKET_ENABLE
))
2980 putpkt ("QStartNoAckMode");
2981 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2982 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
2986 if (args
->extended_p
)
2988 /* Tell the remote that we are using the extended protocol. */
2990 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2993 /* Next, if the target can specify a description, read it. We do
2994 this before anything involving memory or registers. */
2995 target_find_description ();
2997 /* Next, now that we know something about the target, update the
2998 address spaces in the program spaces. */
2999 update_address_spaces ();
3001 /* On OSs where the list of libraries is global to all
3002 processes, we fetch them early. */
3003 if (gdbarch_has_global_solist (target_gdbarch
))
3004 solib_add (NULL
, args
->from_tty
, args
->target
, auto_solib_add
);
3008 if (!rs
->non_stop_aware
)
3009 error (_("Non-stop mode requested, but remote does not support non-stop"));
3011 putpkt ("QNonStop:1");
3012 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3014 if (strcmp (rs
->buf
, "OK") != 0)
3015 error ("Remote refused setting non-stop mode with: %s", rs
->buf
);
3017 /* Find about threads and processes the stub is already
3018 controlling. We default to adding them in the running state.
3019 The '?' query below will then tell us about which threads are
3021 remote_threads_info (args
->target
);
3023 else if (rs
->non_stop_aware
)
3025 /* Don't assume that the stub can operate in all-stop mode.
3026 Request it explicitely. */
3027 putpkt ("QNonStop:0");
3028 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3030 if (strcmp (rs
->buf
, "OK") != 0)
3031 error ("Remote refused setting all-stop mode with: %s", rs
->buf
);
3034 /* Check whether the target is running now. */
3036 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3040 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3042 if (!args
->extended_p
)
3043 error (_("The target is not running (try extended-remote?)"));
3045 /* We're connected, but not running. Drop out before we
3046 call start_remote. */
3051 /* Save the reply for later. */
3052 wait_status
= alloca (strlen (rs
->buf
) + 1);
3053 strcpy (wait_status
, rs
->buf
);
3056 /* Let the stub know that we want it to return the thread. */
3057 set_continue_thread (minus_one_ptid
);
3059 /* Without this, some commands which require an active target
3060 (such as kill) won't work. This variable serves (at least)
3061 double duty as both the pid of the target process (if it has
3062 such), and as a flag indicating that a target is active.
3063 These functions should be split out into seperate variables,
3064 especially since GDB will someday have a notion of debugging
3065 several processes. */
3066 inferior_ptid
= magic_null_ptid
;
3068 /* Now, if we have thread information, update inferior_ptid. */
3069 inferior_ptid
= remote_current_thread (inferior_ptid
);
3071 remote_add_inferior (ptid_get_pid (inferior_ptid
), -1);
3073 /* Always add the main thread. */
3074 add_thread_silent (inferior_ptid
);
3076 get_offsets (); /* Get text, data & bss offsets. */
3078 /* If we could not find a description using qXfer, and we know
3079 how to do it some other way, try again. This is not
3080 supported for non-stop; it could be, but it is tricky if
3081 there are no stopped threads when we connect. */
3082 if (remote_read_description_p (args
->target
)
3083 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3085 target_clear_description ();
3086 target_find_description ();
3089 /* Use the previously fetched status. */
3090 gdb_assert (wait_status
!= NULL
);
3091 strcpy (rs
->buf
, wait_status
);
3092 rs
->cached_wait_status
= 1;
3095 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
3099 /* Clear WFI global state. Do this before finding about new
3100 threads and inferiors, and setting the current inferior.
3101 Otherwise we would clear the proceed status of the current
3102 inferior when we want its stop_soon state to be preserved
3103 (see notice_new_inferior). */
3104 init_wait_for_inferior ();
3106 /* In non-stop, we will either get an "OK", meaning that there
3107 are no stopped threads at this time; or, a regular stop
3108 reply. In the latter case, there may be more than one thread
3109 stopped --- we pull them all out using the vStopped
3111 if (strcmp (rs
->buf
, "OK") != 0)
3113 struct stop_reply
*stop_reply
;
3114 struct cleanup
*old_chain
;
3116 stop_reply
= stop_reply_xmalloc ();
3117 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3119 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3120 discard_cleanups (old_chain
);
3122 /* get_pending_stop_replies acks this one, and gets the rest
3124 pending_stop_reply
= stop_reply
;
3125 remote_get_pending_stop_replies ();
3127 /* Make sure that threads that were stopped remain
3129 iterate_over_threads (set_stop_requested_callback
, NULL
);
3132 if (target_can_async_p ())
3133 target_async (inferior_event_handler
, 0);
3135 if (thread_count () == 0)
3137 if (!args
->extended_p
)
3138 error (_("The target is not running (try extended-remote?)"));
3140 /* We're connected, but not running. Drop out before we
3141 call start_remote. */
3145 /* Let the stub know that we want it to return the thread. */
3147 /* Force the stub to choose a thread. */
3148 set_general_thread (null_ptid
);
3151 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3152 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3153 error (_("remote didn't report the current thread in non-stop mode"));
3155 get_offsets (); /* Get text, data & bss offsets. */
3157 /* In non-stop mode, any cached wait status will be stored in
3158 the stop reply queue. */
3159 gdb_assert (wait_status
== NULL
);
3162 /* If we connected to a live target, do some additional setup. */
3163 if (target_has_execution
)
3165 if (exec_bfd
) /* No use without an exec file. */
3166 remote_check_symbols (symfile_objfile
);
3169 /* Possibly the target has been engaged in a trace run started
3170 previously; find out where things are at. */
3171 if (rs
->disconnected_tracing
)
3173 struct uploaded_tp
*uploaded_tps
= NULL
;
3174 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3176 remote_get_trace_status (current_trace_status ());
3177 if (current_trace_status ()->running
)
3178 printf_filtered (_("Trace is already running on the target.\n"));
3180 /* Get trace state variables first, they may be checked when
3181 parsing uploaded commands. */
3183 remote_upload_trace_state_variables (&uploaded_tsvs
);
3185 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3187 remote_upload_tracepoints (&uploaded_tps
);
3189 merge_uploaded_tracepoints (&uploaded_tps
);
3192 /* If breakpoints are global, insert them now. */
3193 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3194 && breakpoints_always_inserted_mode ())
3195 insert_breakpoints ();
3198 /* Open a connection to a remote debugger.
3199 NAME is the filename used for communication. */
3202 remote_open (char *name
, int from_tty
)
3204 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3207 /* Open a connection to a remote debugger using the extended
3208 remote gdb protocol. NAME is the filename used for communication. */
3211 extended_remote_open (char *name
, int from_tty
)
3213 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3216 /* Generic code for opening a connection to a remote target. */
3219 init_all_packet_configs (void)
3222 for (i
= 0; i
< PACKET_MAX
; i
++)
3223 update_packet_config (&remote_protocol_packets
[i
]);
3226 /* Symbol look-up. */
3229 remote_check_symbols (struct objfile
*objfile
)
3231 struct remote_state
*rs
= get_remote_state ();
3232 char *msg
, *reply
, *tmp
;
3233 struct minimal_symbol
*sym
;
3236 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3239 /* Make sure the remote is pointing at the right process. */
3240 set_general_process ();
3242 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3243 because we need both at the same time. */
3244 msg
= alloca (get_remote_packet_size ());
3246 /* Invite target to request symbol lookups. */
3248 putpkt ("qSymbol::");
3249 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3250 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3253 while (strncmp (reply
, "qSymbol:", 8) == 0)
3256 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3258 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3260 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3263 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3264 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3266 /* If this is a function address, return the start of code
3267 instead of any data function descriptor. */
3268 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3272 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3273 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3282 static struct serial
*
3283 remote_serial_open (char *name
)
3285 static int udp_warning
= 0;
3287 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3288 of in ser-tcp.c, because it is the remote protocol assuming that the
3289 serial connection is reliable and not the serial connection promising
3291 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3294 The remote protocol may be unreliable over UDP.\n\
3295 Some events may be lost, rendering further debugging impossible."));
3299 return serial_open (name
);
3302 /* This type describes each known response to the qSupported
3304 struct protocol_feature
3306 /* The name of this protocol feature. */
3309 /* The default for this protocol feature. */
3310 enum packet_support default_support
;
3312 /* The function to call when this feature is reported, or after
3313 qSupported processing if the feature is not supported.
3314 The first argument points to this structure. The second
3315 argument indicates whether the packet requested support be
3316 enabled, disabled, or probed (or the default, if this function
3317 is being called at the end of processing and this feature was
3318 not reported). The third argument may be NULL; if not NULL, it
3319 is a NUL-terminated string taken from the packet following
3320 this feature's name and an equals sign. */
3321 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3324 /* The corresponding packet for this feature. Only used if
3325 FUNC is remote_supported_packet. */
3330 remote_supported_packet (const struct protocol_feature
*feature
,
3331 enum packet_support support
,
3332 const char *argument
)
3336 warning (_("Remote qSupported response supplied an unexpected value for"
3337 " \"%s\"."), feature
->name
);
3341 if (remote_protocol_packets
[feature
->packet
].support
3342 == PACKET_SUPPORT_UNKNOWN
)
3343 remote_protocol_packets
[feature
->packet
].support
= support
;
3347 remote_packet_size (const struct protocol_feature
*feature
,
3348 enum packet_support support
, const char *value
)
3350 struct remote_state
*rs
= get_remote_state ();
3355 if (support
!= PACKET_ENABLE
)
3358 if (value
== NULL
|| *value
== '\0')
3360 warning (_("Remote target reported \"%s\" without a size."),
3366 packet_size
= strtol (value
, &value_end
, 16);
3367 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3369 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3370 feature
->name
, value
);
3374 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3376 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3377 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3378 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3381 /* Record the new maximum packet size. */
3382 rs
->explicit_packet_size
= packet_size
;
3386 remote_multi_process_feature (const struct protocol_feature
*feature
,
3387 enum packet_support support
, const char *value
)
3389 struct remote_state
*rs
= get_remote_state ();
3390 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3394 remote_non_stop_feature (const struct protocol_feature
*feature
,
3395 enum packet_support support
, const char *value
)
3397 struct remote_state
*rs
= get_remote_state ();
3398 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3402 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3403 enum packet_support support
,
3406 struct remote_state
*rs
= get_remote_state ();
3407 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3411 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3412 enum packet_support support
,
3415 struct remote_state
*rs
= get_remote_state ();
3416 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3420 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3421 enum packet_support support
,
3424 struct remote_state
*rs
= get_remote_state ();
3425 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3428 static struct protocol_feature remote_protocol_features
[] = {
3429 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3430 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3431 PACKET_qXfer_auxv
},
3432 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3433 PACKET_qXfer_features
},
3434 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3435 PACKET_qXfer_libraries
},
3436 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3437 PACKET_qXfer_memory_map
},
3438 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3439 PACKET_qXfer_spu_read
},
3440 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3441 PACKET_qXfer_spu_write
},
3442 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3443 PACKET_qXfer_osdata
},
3444 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3445 PACKET_qXfer_threads
},
3446 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3447 PACKET_QPassSignals
},
3448 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3449 PACKET_QStartNoAckMode
},
3450 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3451 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3452 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3453 PACKET_qXfer_siginfo_read
},
3454 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3455 PACKET_qXfer_siginfo_write
},
3456 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3457 PACKET_ConditionalTracepoints
},
3458 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3459 PACKET_FastTracepoints
},
3460 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3462 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3464 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3466 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3467 PACKET_TracepointSource
},
3471 remote_query_supported (void)
3473 struct remote_state
*rs
= get_remote_state ();
3476 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3478 /* The packet support flags are handled differently for this packet
3479 than for most others. We treat an error, a disabled packet, and
3480 an empty response identically: any features which must be reported
3481 to be used will be automatically disabled. An empty buffer
3482 accomplishes this, since that is also the representation for a list
3483 containing no features. */
3486 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3488 const char *qsupported
= gdbarch_qsupported (target_gdbarch
);
3493 q
= concat ("qSupported:multiprocess+;", qsupported
, NULL
);
3495 q
= concat ("qSupported:", qsupported
, NULL
);
3502 putpkt ("qSupported:multiprocess+");
3504 putpkt ("qSupported");
3507 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3509 /* If an error occured, warn, but do not return - just reset the
3510 buffer to empty and go on to disable features. */
3511 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3514 warning (_("Remote failure reply: %s"), rs
->buf
);
3519 memset (seen
, 0, sizeof (seen
));
3524 enum packet_support is_supported
;
3525 char *p
, *end
, *name_end
, *value
;
3527 /* First separate out this item from the rest of the packet. If
3528 there's another item after this, we overwrite the separator
3529 (terminated strings are much easier to work with). */
3531 end
= strchr (p
, ';');
3534 end
= p
+ strlen (p
);
3544 warning (_("empty item in \"qSupported\" response"));
3549 name_end
= strchr (p
, '=');
3552 /* This is a name=value entry. */
3553 is_supported
= PACKET_ENABLE
;
3554 value
= name_end
+ 1;
3563 is_supported
= PACKET_ENABLE
;
3567 is_supported
= PACKET_DISABLE
;
3571 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3575 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
3581 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3582 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3584 const struct protocol_feature
*feature
;
3587 feature
= &remote_protocol_features
[i
];
3588 feature
->func (feature
, is_supported
, value
);
3593 /* If we increased the packet size, make sure to increase the global
3594 buffer size also. We delay this until after parsing the entire
3595 qSupported packet, because this is the same buffer we were
3597 if (rs
->buf_size
< rs
->explicit_packet_size
)
3599 rs
->buf_size
= rs
->explicit_packet_size
;
3600 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3603 /* Handle the defaults for unmentioned features. */
3604 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3607 const struct protocol_feature
*feature
;
3609 feature
= &remote_protocol_features
[i
];
3610 feature
->func (feature
, feature
->default_support
, NULL
);
3616 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
, int extended_p
)
3618 struct remote_state
*rs
= get_remote_state ();
3621 error (_("To open a remote debug connection, you need to specify what\n"
3622 "serial device is attached to the remote system\n"
3623 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3625 /* See FIXME above. */
3626 if (!target_async_permitted
)
3627 wait_forever_enabled_p
= 1;
3629 /* If we're connected to a running target, target_preopen will kill it.
3630 But if we're connected to a target system with no running process,
3631 then we will still be connected when it returns. Ask this question
3632 first, before target_preopen has a chance to kill anything. */
3633 if (remote_desc
!= NULL
&& !have_inferiors ())
3636 || query (_("Already connected to a remote target. Disconnect? ")))
3639 error (_("Still connected."));
3642 target_preopen (from_tty
);
3644 unpush_target (target
);
3646 /* This time without a query. If we were connected to an
3647 extended-remote target and target_preopen killed the running
3648 process, we may still be connected. If we are starting "target
3649 remote" now, the extended-remote target will not have been
3650 removed by unpush_target. */
3651 if (remote_desc
!= NULL
&& !have_inferiors ())
3654 /* Make sure we send the passed signals list the next time we resume. */
3655 xfree (last_pass_packet
);
3656 last_pass_packet
= NULL
;
3658 remote_fileio_reset ();
3659 reopen_exec_file ();
3662 remote_desc
= remote_serial_open (name
);
3664 perror_with_name (name
);
3666 if (baud_rate
!= -1)
3668 if (serial_setbaudrate (remote_desc
, baud_rate
))
3670 /* The requested speed could not be set. Error out to
3671 top level after closing remote_desc. Take care to
3672 set remote_desc to NULL to avoid closing remote_desc
3674 serial_close (remote_desc
);
3676 perror_with_name (name
);
3680 serial_raw (remote_desc
);
3682 /* If there is something sitting in the buffer we might take it as a
3683 response to a command, which would be bad. */
3684 serial_flush_input (remote_desc
);
3688 puts_filtered ("Remote debugging using ");
3689 puts_filtered (name
);
3690 puts_filtered ("\n");
3692 push_target (target
); /* Switch to using remote target now. */
3694 /* Register extra event sources in the event loop. */
3695 remote_async_inferior_event_token
3696 = create_async_event_handler (remote_async_inferior_event_handler
,
3698 remote_async_get_pending_events_token
3699 = create_async_event_handler (remote_async_get_pending_events_handler
,
3702 /* Reset the target state; these things will be queried either by
3703 remote_query_supported or as they are needed. */
3704 init_all_packet_configs ();
3705 rs
->cached_wait_status
= 0;
3706 rs
->explicit_packet_size
= 0;
3708 rs
->multi_process_aware
= 0;
3709 rs
->extended
= extended_p
;
3710 rs
->non_stop_aware
= 0;
3711 rs
->waiting_for_stop_reply
= 0;
3712 rs
->ctrlc_pending_p
= 0;
3714 general_thread
= not_sent_ptid
;
3715 continue_thread
= not_sent_ptid
;
3717 /* Probe for ability to use "ThreadInfo" query, as required. */
3718 use_threadinfo_query
= 1;
3719 use_threadextra_query
= 1;
3721 if (target_async_permitted
)
3723 /* With this target we start out by owning the terminal. */
3724 remote_async_terminal_ours_p
= 1;
3726 /* FIXME: cagney/1999-09-23: During the initial connection it is
3727 assumed that the target is already ready and able to respond to
3728 requests. Unfortunately remote_start_remote() eventually calls
3729 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
3730 around this. Eventually a mechanism that allows
3731 wait_for_inferior() to expect/get timeouts will be
3733 wait_forever_enabled_p
= 0;
3736 /* First delete any symbols previously loaded from shared libraries. */
3737 no_shared_libraries (NULL
, 0);
3740 init_thread_list ();
3742 /* Start the remote connection. If error() or QUIT, discard this
3743 target (we'd otherwise be in an inconsistent state) and then
3744 propogate the error on up the exception chain. This ensures that
3745 the caller doesn't stumble along blindly assuming that the
3746 function succeeded. The CLI doesn't have this problem but other
3747 UI's, such as MI do.
3749 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
3750 this function should return an error indication letting the
3751 caller restore the previous state. Unfortunately the command
3752 ``target remote'' is directly wired to this function making that
3753 impossible. On a positive note, the CLI side of this problem has
3754 been fixed - the function set_cmd_context() makes it possible for
3755 all the ``target ....'' commands to share a common callback
3756 function. See cli-dump.c. */
3758 struct gdb_exception ex
;
3759 struct start_remote_args args
;
3761 args
.from_tty
= from_tty
;
3762 args
.target
= target
;
3763 args
.extended_p
= extended_p
;
3765 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
3768 /* Pop the partially set up target - unless something else did
3769 already before throwing the exception. */
3770 if (remote_desc
!= NULL
)
3772 if (target_async_permitted
)
3773 wait_forever_enabled_p
= 1;
3774 throw_exception (ex
);
3778 if (target_async_permitted
)
3779 wait_forever_enabled_p
= 1;
3782 /* This takes a program previously attached to and detaches it. After
3783 this is done, GDB can be used to debug some other program. We
3784 better not have left any breakpoints in the target program or it'll
3785 die when it hits one. */
3788 remote_detach_1 (char *args
, int from_tty
, int extended
)
3790 int pid
= ptid_get_pid (inferior_ptid
);
3791 struct remote_state
*rs
= get_remote_state ();
3794 error (_("Argument given to \"detach\" when remotely debugging."));
3796 if (!target_has_execution
)
3797 error (_("No process to detach from."));
3799 /* Tell the remote target to detach. */
3800 if (remote_multi_process_p (rs
))
3801 sprintf (rs
->buf
, "D;%x", pid
);
3803 strcpy (rs
->buf
, "D");
3806 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3808 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
3810 else if (rs
->buf
[0] == '\0')
3811 error (_("Remote doesn't know how to detach"));
3813 error (_("Can't detach process."));
3817 if (remote_multi_process_p (rs
))
3818 printf_filtered (_("Detached from remote %s.\n"),
3819 target_pid_to_str (pid_to_ptid (pid
)));
3823 puts_filtered (_("Detached from remote process.\n"));
3825 puts_filtered (_("Ending remote debugging.\n"));
3829 discard_pending_stop_replies (pid
);
3830 target_mourn_inferior ();
3834 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3836 remote_detach_1 (args
, from_tty
, 0);
3840 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3842 remote_detach_1 (args
, from_tty
, 1);
3845 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
3848 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
3851 error (_("Argument given to \"disconnect\" when remotely debugging."));
3853 /* Make sure we unpush even the extended remote targets; mourn
3854 won't do it. So call remote_mourn_1 directly instead of
3855 target_mourn_inferior. */
3856 remote_mourn_1 (target
);
3859 puts_filtered ("Ending remote debugging.\n");
3862 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
3863 be chatty about it. */
3866 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
3868 struct remote_state
*rs
= get_remote_state ();
3870 char *wait_status
= NULL
;
3872 pid
= parse_pid_to_attach (args
);
3874 /* Remote PID can be freely equal to getpid, do not check it here the same
3875 way as in other targets. */
3877 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3878 error (_("This target does not support attaching to a process"));
3880 sprintf (rs
->buf
, "vAttach;%x", pid
);
3882 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3884 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
3887 printf_unfiltered (_("Attached to %s\n"),
3888 target_pid_to_str (pid_to_ptid (pid
)));
3892 /* Save the reply for later. */
3893 wait_status
= alloca (strlen (rs
->buf
) + 1);
3894 strcpy (wait_status
, rs
->buf
);
3896 else if (strcmp (rs
->buf
, "OK") != 0)
3897 error (_("Attaching to %s failed with: %s"),
3898 target_pid_to_str (pid_to_ptid (pid
)),
3901 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3902 error (_("This target does not support attaching to a process"));
3904 error (_("Attaching to %s failed"),
3905 target_pid_to_str (pid_to_ptid (pid
)));
3907 set_current_inferior (remote_add_inferior (pid
, 1));
3909 inferior_ptid
= pid_to_ptid (pid
);
3913 struct thread_info
*thread
;
3915 /* Get list of threads. */
3916 remote_threads_info (target
);
3918 thread
= first_thread_of_process (pid
);
3920 inferior_ptid
= thread
->ptid
;
3922 inferior_ptid
= pid_to_ptid (pid
);
3924 /* Invalidate our notion of the remote current thread. */
3925 record_currthread (minus_one_ptid
);
3929 /* Now, if we have thread information, update inferior_ptid. */
3930 inferior_ptid
= remote_current_thread (inferior_ptid
);
3932 /* Add the main thread to the thread list. */
3933 add_thread_silent (inferior_ptid
);
3936 /* Next, if the target can specify a description, read it. We do
3937 this before anything involving memory or registers. */
3938 target_find_description ();
3942 /* Use the previously fetched status. */
3943 gdb_assert (wait_status
!= NULL
);
3945 if (target_can_async_p ())
3947 struct stop_reply
*stop_reply
;
3948 struct cleanup
*old_chain
;
3950 stop_reply
= stop_reply_xmalloc ();
3951 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3952 remote_parse_stop_reply (wait_status
, stop_reply
);
3953 discard_cleanups (old_chain
);
3954 push_stop_reply (stop_reply
);
3956 target_async (inferior_event_handler
, 0);
3960 gdb_assert (wait_status
!= NULL
);
3961 strcpy (rs
->buf
, wait_status
);
3962 rs
->cached_wait_status
= 1;
3966 gdb_assert (wait_status
== NULL
);
3970 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3972 extended_remote_attach_1 (ops
, args
, from_tty
);
3975 /* Convert hex digit A to a number. */
3980 if (a
>= '0' && a
<= '9')
3982 else if (a
>= 'a' && a
<= 'f')
3983 return a
- 'a' + 10;
3984 else if (a
>= 'A' && a
<= 'F')
3985 return a
- 'A' + 10;
3987 error (_("Reply contains invalid hex digit %d"), a
);
3991 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
3995 for (i
= 0; i
< count
; i
++)
3997 if (hex
[0] == 0 || hex
[1] == 0)
3999 /* Hex string is short, or of uneven length.
4000 Return the count that has been converted so far. */
4003 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4009 /* Convert number NIB to a hex digit. */
4017 return 'a' + nib
- 10;
4021 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4024 /* May use a length, or a nul-terminated string as input. */
4026 count
= strlen ((char *) bin
);
4028 for (i
= 0; i
< count
; i
++)
4030 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4031 *hex
++ = tohex (*bin
++ & 0xf);
4037 /* Check for the availability of vCont. This function should also check
4041 remote_vcont_probe (struct remote_state
*rs
)
4045 strcpy (rs
->buf
, "vCont?");
4047 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4050 /* Make sure that the features we assume are supported. */
4051 if (strncmp (buf
, "vCont", 5) == 0)
4054 int support_s
, support_S
, support_c
, support_C
;
4060 rs
->support_vCont_t
= 0;
4061 while (p
&& *p
== ';')
4064 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4066 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4068 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4070 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4072 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4073 rs
->support_vCont_t
= 1;
4075 p
= strchr (p
, ';');
4078 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4079 BUF will make packet_ok disable the packet. */
4080 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4084 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4087 /* Helper function for building "vCont" resumptions. Write a
4088 resumption to P. ENDP points to one-passed-the-end of the buffer
4089 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4090 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4091 resumed thread should be single-stepped and/or signalled. If PTID
4092 equals minus_one_ptid, then all threads are resumed; if PTID
4093 represents a process, then all threads of the process are resumed;
4094 the thread to be stepped and/or signalled is given in the global
4098 append_resumption (char *p
, char *endp
,
4099 ptid_t ptid
, int step
, enum target_signal siggnal
)
4101 struct remote_state
*rs
= get_remote_state ();
4103 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4104 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4106 p
+= xsnprintf (p
, endp
- p
, ";s");
4107 else if (siggnal
!= TARGET_SIGNAL_0
)
4108 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4110 p
+= xsnprintf (p
, endp
- p
, ";c");
4112 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4116 /* All (-1) threads of process. */
4117 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4119 p
+= xsnprintf (p
, endp
- p
, ":");
4120 p
= write_ptid (p
, endp
, nptid
);
4122 else if (!ptid_equal (ptid
, minus_one_ptid
))
4124 p
+= xsnprintf (p
, endp
- p
, ":");
4125 p
= write_ptid (p
, endp
, ptid
);
4131 /* Resume the remote inferior by using a "vCont" packet. The thread
4132 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4133 resumed thread should be single-stepped and/or signalled. If PTID
4134 equals minus_one_ptid, then all threads are resumed; the thread to
4135 be stepped and/or signalled is given in the global INFERIOR_PTID.
4136 This function returns non-zero iff it resumes the inferior.
4138 This function issues a strict subset of all possible vCont commands at the
4142 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4144 struct remote_state
*rs
= get_remote_state ();
4148 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4149 remote_vcont_probe (rs
);
4151 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4155 endp
= rs
->buf
+ get_remote_packet_size ();
4157 /* If we could generate a wider range of packets, we'd have to worry
4158 about overflowing BUF. Should there be a generic
4159 "multi-part-packet" packet? */
4161 p
+= xsnprintf (p
, endp
- p
, "vCont");
4163 if (ptid_equal (ptid
, magic_null_ptid
))
4165 /* MAGIC_NULL_PTID means that we don't have any active threads,
4166 so we don't have any TID numbers the inferior will
4167 understand. Make sure to only send forms that do not specify
4169 p
= append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4171 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4173 /* Resume all threads (of all processes, or of a single
4174 process), with preference for INFERIOR_PTID. This assumes
4175 inferior_ptid belongs to the set of all threads we are about
4177 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4179 /* Step inferior_ptid, with or without signal. */
4180 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4183 /* And continue others without a signal. */
4184 p
= append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4188 /* Scheduler locking; resume only PTID. */
4189 p
= append_resumption (p
, endp
, ptid
, step
, siggnal
);
4192 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4197 /* In non-stop, the stub replies to vCont with "OK". The stop
4198 reply will be reported asynchronously by means of a `%Stop'
4200 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4201 if (strcmp (rs
->buf
, "OK") != 0)
4202 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4208 /* Tell the remote machine to resume. */
4210 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4212 static int last_sent_step
;
4215 remote_resume (struct target_ops
*ops
,
4216 ptid_t ptid
, int step
, enum target_signal siggnal
)
4218 struct remote_state
*rs
= get_remote_state ();
4221 last_sent_signal
= siggnal
;
4222 last_sent_step
= step
;
4224 /* Update the inferior on signals to silently pass, if they've changed. */
4225 remote_pass_signals ();
4227 /* The vCont packet doesn't need to specify threads via Hc. */
4228 /* No reverse support (yet) for vCont. */
4229 if (execution_direction
!= EXEC_REVERSE
)
4230 if (remote_vcont_resume (ptid
, step
, siggnal
))
4233 /* All other supported resume packets do use Hc, so set the continue
4235 if (ptid_equal (ptid
, minus_one_ptid
))
4236 set_continue_thread (any_thread_ptid
);
4238 set_continue_thread (ptid
);
4241 if (execution_direction
== EXEC_REVERSE
)
4243 /* We don't pass signals to the target in reverse exec mode. */
4244 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4245 warning (" - Can't pass signal %d to target in reverse: ignored.\n",
4249 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4250 error (_("Remote reverse-step not supported."));
4252 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4253 error (_("Remote reverse-continue not supported."));
4255 strcpy (buf
, step
? "bs" : "bc");
4257 else if (siggnal
!= TARGET_SIGNAL_0
)
4259 buf
[0] = step
? 'S' : 'C';
4260 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4261 buf
[2] = tohex (((int) siggnal
) & 0xf);
4265 strcpy (buf
, step
? "s" : "c");
4270 /* We are about to start executing the inferior, let's register it
4271 with the event loop. NOTE: this is the one place where all the
4272 execution commands end up. We could alternatively do this in each
4273 of the execution commands in infcmd.c. */
4274 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4275 into infcmd.c in order to allow inferior function calls to work
4276 NOT asynchronously. */
4277 if (target_can_async_p ())
4278 target_async (inferior_event_handler
, 0);
4280 /* We've just told the target to resume. The remote server will
4281 wait for the inferior to stop, and then send a stop reply. In
4282 the mean time, we can't start another command/query ourselves
4283 because the stub wouldn't be ready to process it. This applies
4284 only to the base all-stop protocol, however. In non-stop (which
4285 only supports vCont), the stub replies with an "OK", and is
4286 immediate able to process further serial input. */
4288 rs
->waiting_for_stop_reply
= 1;
4292 /* Set up the signal handler for SIGINT, while the target is
4293 executing, ovewriting the 'regular' SIGINT signal handler. */
4295 initialize_sigint_signal_handler (void)
4297 signal (SIGINT
, handle_remote_sigint
);
4300 /* Signal handler for SIGINT, while the target is executing. */
4302 handle_remote_sigint (int sig
)
4304 signal (sig
, handle_remote_sigint_twice
);
4305 mark_async_signal_handler_wrapper (sigint_remote_token
);
4308 /* Signal handler for SIGINT, installed after SIGINT has already been
4309 sent once. It will take effect the second time that the user sends
4312 handle_remote_sigint_twice (int sig
)
4314 signal (sig
, handle_remote_sigint
);
4315 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4318 /* Perform the real interruption of the target execution, in response
4321 async_remote_interrupt (gdb_client_data arg
)
4324 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4326 target_stop (inferior_ptid
);
4329 /* Perform interrupt, if the first attempt did not succeed. Just give
4330 up on the target alltogether. */
4332 async_remote_interrupt_twice (gdb_client_data arg
)
4335 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4340 /* Reinstall the usual SIGINT handlers, after the target has
4343 cleanup_sigint_signal_handler (void *dummy
)
4345 signal (SIGINT
, handle_sigint
);
4348 /* Send ^C to target to halt it. Target will respond, and send us a
4350 static void (*ofunc
) (int);
4352 /* The command line interface's stop routine. This function is installed
4353 as a signal handler for SIGINT. The first time a user requests a
4354 stop, we call remote_stop to send a break or ^C. If there is no
4355 response from the target (it didn't stop when the user requested it),
4356 we ask the user if he'd like to detach from the target. */
4358 remote_interrupt (int signo
)
4360 /* If this doesn't work, try more severe steps. */
4361 signal (signo
, remote_interrupt_twice
);
4363 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4366 /* The user typed ^C twice. */
4369 remote_interrupt_twice (int signo
)
4371 signal (signo
, ofunc
);
4372 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4373 signal (signo
, remote_interrupt
);
4376 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4377 thread, all threads of a remote process, or all threads of all
4381 remote_stop_ns (ptid_t ptid
)
4383 struct remote_state
*rs
= get_remote_state ();
4385 char *endp
= rs
->buf
+ get_remote_packet_size ();
4387 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4388 remote_vcont_probe (rs
);
4390 if (!rs
->support_vCont_t
)
4391 error (_("Remote server does not support stopping threads"));
4393 if (ptid_equal (ptid
, minus_one_ptid
)
4394 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4395 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4400 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4402 if (ptid_is_pid (ptid
))
4403 /* All (-1) threads of process. */
4404 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4407 /* Small optimization: if we already have a stop reply for
4408 this thread, no use in telling the stub we want this
4410 if (peek_stop_reply (ptid
))
4416 p
= write_ptid (p
, endp
, nptid
);
4419 /* In non-stop, we get an immediate OK reply. The stop reply will
4420 come in asynchronously by notification. */
4422 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4423 if (strcmp (rs
->buf
, "OK") != 0)
4424 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4427 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4428 remote target. It is undefined which thread of which process
4429 reports the stop. */
4432 remote_stop_as (ptid_t ptid
)
4434 struct remote_state
*rs
= get_remote_state ();
4436 rs
->ctrlc_pending_p
= 1;
4438 /* If the inferior is stopped already, but the core didn't know
4439 about it yet, just ignore the request. The cached wait status
4440 will be collected in remote_wait. */
4441 if (rs
->cached_wait_status
)
4444 /* Send interrupt_sequence to remote target. */
4445 send_interrupt_sequence ();
4448 /* This is the generic stop called via the target vector. When a target
4449 interrupt is requested, either by the command line or the GUI, we
4450 will eventually end up here. */
4453 remote_stop (ptid_t ptid
)
4456 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4459 remote_stop_ns (ptid
);
4461 remote_stop_as (ptid
);
4464 /* Ask the user what to do when an interrupt is received. */
4467 interrupt_query (void)
4469 target_terminal_ours ();
4471 if (target_can_async_p ())
4473 signal (SIGINT
, handle_sigint
);
4474 deprecated_throw_reason (RETURN_QUIT
);
4478 if (query (_("Interrupted while waiting for the program.\n\
4479 Give up (and stop debugging it)? ")))
4482 deprecated_throw_reason (RETURN_QUIT
);
4486 target_terminal_inferior ();
4489 /* Enable/disable target terminal ownership. Most targets can use
4490 terminal groups to control terminal ownership. Remote targets are
4491 different in that explicit transfer of ownership to/from GDB/target
4495 remote_terminal_inferior (void)
4497 if (!target_async_permitted
)
4498 /* Nothing to do. */
4501 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4502 idempotent. The event-loop GDB talking to an asynchronous target
4503 with a synchronous command calls this function from both
4504 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4505 transfer the terminal to the target when it shouldn't this guard
4507 if (!remote_async_terminal_ours_p
)
4509 delete_file_handler (input_fd
);
4510 remote_async_terminal_ours_p
= 0;
4511 initialize_sigint_signal_handler ();
4512 /* NOTE: At this point we could also register our selves as the
4513 recipient of all input. Any characters typed could then be
4514 passed on down to the target. */
4518 remote_terminal_ours (void)
4520 if (!target_async_permitted
)
4521 /* Nothing to do. */
4524 /* See FIXME in remote_terminal_inferior. */
4525 if (remote_async_terminal_ours_p
)
4527 cleanup_sigint_signal_handler (NULL
);
4528 add_file_handler (input_fd
, stdin_event_handler
, 0);
4529 remote_async_terminal_ours_p
= 1;
4533 remote_console_output (char *msg
)
4537 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4540 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4543 fputs_unfiltered (tb
, gdb_stdtarg
);
4545 gdb_flush (gdb_stdtarg
);
4548 typedef struct cached_reg
4551 gdb_byte data
[MAX_REGISTER_SIZE
];
4554 DEF_VEC_O(cached_reg_t
);
4558 struct stop_reply
*next
;
4562 struct target_waitstatus ws
;
4564 VEC(cached_reg_t
) *regcache
;
4566 int stopped_by_watchpoint_p
;
4567 CORE_ADDR watch_data_address
;
4575 /* The list of already fetched and acknowledged stop events. */
4576 static struct stop_reply
*stop_reply_queue
;
4578 static struct stop_reply
*
4579 stop_reply_xmalloc (void)
4581 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
4587 stop_reply_xfree (struct stop_reply
*r
)
4591 VEC_free (cached_reg_t
, r
->regcache
);
4596 /* Discard all pending stop replies of inferior PID. If PID is -1,
4597 discard everything. */
4600 discard_pending_stop_replies (int pid
)
4602 struct stop_reply
*prev
= NULL
, *reply
, *next
;
4604 /* Discard the in-flight notification. */
4605 if (pending_stop_reply
!= NULL
4607 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
4609 stop_reply_xfree (pending_stop_reply
);
4610 pending_stop_reply
= NULL
;
4613 /* Discard the stop replies we have already pulled with
4615 for (reply
= stop_reply_queue
; reply
; reply
= next
)
4619 || ptid_get_pid (reply
->ptid
) == pid
)
4621 if (reply
== stop_reply_queue
)
4622 stop_reply_queue
= reply
->next
;
4624 prev
->next
= reply
->next
;
4626 stop_reply_xfree (reply
);
4633 /* Cleanup wrapper. */
4636 do_stop_reply_xfree (void *arg
)
4638 struct stop_reply
*r
= arg
;
4639 stop_reply_xfree (r
);
4642 /* Look for a queued stop reply belonging to PTID. If one is found,
4643 remove it from the queue, and return it. Returns NULL if none is
4644 found. If there are still queued events left to process, tell the
4645 event loop to get back to target_wait soon. */
4647 static struct stop_reply
*
4648 queued_stop_reply (ptid_t ptid
)
4650 struct stop_reply
*it
;
4651 struct stop_reply
**it_link
;
4653 it
= stop_reply_queue
;
4654 it_link
= &stop_reply_queue
;
4657 if (ptid_match (it
->ptid
, ptid
))
4659 *it_link
= it
->next
;
4664 it_link
= &it
->next
;
4668 if (stop_reply_queue
)
4669 /* There's still at least an event left. */
4670 mark_async_event_handler (remote_async_inferior_event_token
);
4675 /* Push a fully parsed stop reply in the stop reply queue. Since we
4676 know that we now have at least one queued event left to pass to the
4677 core side, tell the event loop to get back to target_wait soon. */
4680 push_stop_reply (struct stop_reply
*new_event
)
4682 struct stop_reply
*event
;
4684 if (stop_reply_queue
)
4686 for (event
= stop_reply_queue
;
4687 event
&& event
->next
;
4688 event
= event
->next
)
4691 event
->next
= new_event
;
4694 stop_reply_queue
= new_event
;
4696 mark_async_event_handler (remote_async_inferior_event_token
);
4699 /* Returns true if we have a stop reply for PTID. */
4702 peek_stop_reply (ptid_t ptid
)
4704 struct stop_reply
*it
;
4706 for (it
= stop_reply_queue
; it
; it
= it
->next
)
4707 if (ptid_equal (ptid
, it
->ptid
))
4709 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
4716 /* Parse the stop reply in BUF. Either the function succeeds, and the
4717 result is stored in EVENT, or throws an error. */
4720 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
4722 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4726 event
->ptid
= null_ptid
;
4727 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
4728 event
->ws
.value
.integer
= 0;
4729 event
->solibs_changed
= 0;
4730 event
->replay_event
= 0;
4731 event
->stopped_by_watchpoint_p
= 0;
4732 event
->regcache
= NULL
;
4737 case 'T': /* Status with PC, SP, FP, ... */
4738 /* Expedited reply, containing Signal, {regno, reg} repeat. */
4739 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
4741 n... = register number
4742 r... = register contents
4745 p
= &buf
[3]; /* after Txx */
4753 /* If the packet contains a register number, save it in
4754 pnum and set p1 to point to the character following it.
4755 Otherwise p1 points to p. */
4757 /* If this packet is an awatch packet, don't parse the 'a'
4758 as a register number. */
4760 if (strncmp (p
, "awatch", strlen("awatch")) != 0
4761 && strncmp (p
, "core", strlen ("core") != 0))
4763 /* Read the ``P'' register number. */
4764 pnum
= strtol (p
, &p_temp
, 16);
4770 if (p1
== p
) /* No register number present here. */
4772 p1
= strchr (p
, ':');
4774 error (_("Malformed packet(a) (missing colon): %s\n\
4777 if (strncmp (p
, "thread", p1
- p
) == 0)
4778 event
->ptid
= read_ptid (++p1
, &p
);
4779 else if ((strncmp (p
, "watch", p1
- p
) == 0)
4780 || (strncmp (p
, "rwatch", p1
- p
) == 0)
4781 || (strncmp (p
, "awatch", p1
- p
) == 0))
4783 event
->stopped_by_watchpoint_p
= 1;
4784 p
= unpack_varlen_hex (++p1
, &addr
);
4785 event
->watch_data_address
= (CORE_ADDR
) addr
;
4787 else if (strncmp (p
, "library", p1
- p
) == 0)
4791 while (*p_temp
&& *p_temp
!= ';')
4794 event
->solibs_changed
= 1;
4797 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
4799 /* NO_HISTORY event.
4800 p1 will indicate "begin" or "end", but
4801 it makes no difference for now, so ignore it. */
4802 event
->replay_event
= 1;
4803 p_temp
= strchr (p1
+ 1, ';');
4807 else if (strncmp (p
, "core", p1
- p
) == 0)
4810 p
= unpack_varlen_hex (++p1
, &c
);
4815 /* Silently skip unknown optional info. */
4816 p_temp
= strchr (p1
+ 1, ';');
4823 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
4824 cached_reg_t cached_reg
;
4829 error (_("Malformed packet(b) (missing colon): %s\n\
4835 error (_("Remote sent bad register number %s: %s\n\
4837 phex_nz (pnum
, 0), p
, buf
);
4839 cached_reg
.num
= reg
->regnum
;
4841 fieldsize
= hex2bin (p
, cached_reg
.data
,
4842 register_size (target_gdbarch
,
4845 if (fieldsize
< register_size (target_gdbarch
,
4847 warning (_("Remote reply is too short: %s"), buf
);
4849 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
4853 error (_("Remote register badly formatted: %s\nhere: %s"),
4858 case 'S': /* Old style status, just signal only. */
4859 if (event
->solibs_changed
)
4860 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
4861 else if (event
->replay_event
)
4862 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
4865 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
4866 event
->ws
.value
.sig
= (enum target_signal
)
4867 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
4870 case 'W': /* Target exited. */
4877 /* GDB used to accept only 2 hex chars here. Stubs should
4878 only send more if they detect GDB supports multi-process
4880 p
= unpack_varlen_hex (&buf
[1], &value
);
4884 /* The remote process exited. */
4885 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
4886 event
->ws
.value
.integer
= value
;
4890 /* The remote process exited with a signal. */
4891 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
4892 event
->ws
.value
.sig
= (enum target_signal
) value
;
4895 /* If no process is specified, assume inferior_ptid. */
4896 pid
= ptid_get_pid (inferior_ptid
);
4905 else if (strncmp (p
,
4906 "process:", sizeof ("process:") - 1) == 0)
4909 p
+= sizeof ("process:") - 1;
4910 unpack_varlen_hex (p
, &upid
);
4914 error (_("unknown stop reply packet: %s"), buf
);
4917 error (_("unknown stop reply packet: %s"), buf
);
4918 event
->ptid
= pid_to_ptid (pid
);
4923 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
4924 error (_("No process or thread specified in stop reply: %s"), buf
);
4927 /* When the stub wants to tell GDB about a new stop reply, it sends a
4928 stop notification (%Stop). Those can come it at any time, hence,
4929 we have to make sure that any pending putpkt/getpkt sequence we're
4930 making is finished, before querying the stub for more events with
4931 vStopped. E.g., if we started a vStopped sequence immediatelly
4932 upon receiving the %Stop notification, something like this could
4940 1.6) <-- (registers reply to step #1.3)
4942 Obviously, the reply in step #1.6 would be unexpected to a vStopped
4945 To solve this, whenever we parse a %Stop notification sucessfully,
4946 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
4947 doing whatever we were doing:
4953 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
4954 2.5) <-- (registers reply to step #2.3)
4956 Eventualy after step #2.5, we return to the event loop, which
4957 notices there's an event on the
4958 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
4959 associated callback --- the function below. At this point, we're
4960 always safe to start a vStopped sequence. :
4963 2.7) <-- T05 thread:2
4969 remote_get_pending_stop_replies (void)
4971 struct remote_state
*rs
= get_remote_state ();
4973 if (pending_stop_reply
)
4976 putpkt ("vStopped");
4978 /* Now we can rely on it. */
4979 push_stop_reply (pending_stop_reply
);
4980 pending_stop_reply
= NULL
;
4984 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4985 if (strcmp (rs
->buf
, "OK") == 0)
4989 struct cleanup
*old_chain
;
4990 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
4992 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4993 remote_parse_stop_reply (rs
->buf
, stop_reply
);
4996 putpkt ("vStopped");
4998 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5000 /* Now we can rely on it. */
5001 discard_cleanups (old_chain
);
5002 push_stop_reply (stop_reply
);
5005 /* We got an unknown stop reply. */
5006 do_cleanups (old_chain
);
5013 /* Called when it is decided that STOP_REPLY holds the info of the
5014 event that is to be returned to the core. This function always
5015 destroys STOP_REPLY. */
5018 process_stop_reply (struct stop_reply
*stop_reply
,
5019 struct target_waitstatus
*status
)
5022 struct thread_info
*info
;
5024 *status
= stop_reply
->ws
;
5025 ptid
= stop_reply
->ptid
;
5027 /* If no thread/process was reported by the stub, assume the current
5029 if (ptid_equal (ptid
, null_ptid
))
5030 ptid
= inferior_ptid
;
5032 if (status
->kind
!= TARGET_WAITKIND_EXITED
5033 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5035 /* Expedited registers. */
5036 if (stop_reply
->regcache
)
5038 struct regcache
*regcache
5039 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5044 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5046 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5047 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5050 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5051 remote_watch_data_address
= stop_reply
->watch_data_address
;
5053 remote_notice_new_inferior (ptid
, 0);
5054 demand_private_info (ptid
)->core
= stop_reply
->core
;
5057 stop_reply_xfree (stop_reply
);
5061 /* The non-stop mode version of target_wait. */
5064 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5066 struct remote_state
*rs
= get_remote_state ();
5067 struct stop_reply
*stop_reply
;
5070 /* If in non-stop mode, get out of getpkt even if a
5071 notification is received. */
5073 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5080 case 'E': /* Error of some sort. */
5081 /* We're out of sync with the target now. Did it continue
5082 or not? We can't tell which thread it was in non-stop,
5083 so just ignore this. */
5084 warning (_("Remote failure reply: %s"), rs
->buf
);
5086 case 'O': /* Console output. */
5087 remote_console_output (rs
->buf
+ 1);
5090 warning (_("Invalid remote reply: %s"), rs
->buf
);
5094 /* Acknowledge a pending stop reply that may have arrived in the
5096 if (pending_stop_reply
!= NULL
)
5097 remote_get_pending_stop_replies ();
5099 /* If indeed we noticed a stop reply, we're done. */
5100 stop_reply
= queued_stop_reply (ptid
);
5101 if (stop_reply
!= NULL
)
5102 return process_stop_reply (stop_reply
, status
);
5104 /* Still no event. If we're just polling for an event, then
5105 return to the event loop. */
5106 if (options
& TARGET_WNOHANG
)
5108 status
->kind
= TARGET_WAITKIND_IGNORE
;
5109 return minus_one_ptid
;
5112 /* Otherwise do a blocking wait. */
5113 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5118 /* Wait until the remote machine stops, then return, storing status in
5119 STATUS just as `wait' would. */
5122 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5124 struct remote_state
*rs
= get_remote_state ();
5125 ptid_t event_ptid
= null_ptid
;
5127 struct stop_reply
*stop_reply
;
5131 status
->kind
= TARGET_WAITKIND_IGNORE
;
5132 status
->value
.integer
= 0;
5134 stop_reply
= queued_stop_reply (ptid
);
5135 if (stop_reply
!= NULL
)
5136 return process_stop_reply (stop_reply
, status
);
5138 if (rs
->cached_wait_status
)
5139 /* Use the cached wait status, but only once. */
5140 rs
->cached_wait_status
= 0;
5145 if (!target_is_async_p ())
5147 ofunc
= signal (SIGINT
, remote_interrupt
);
5148 /* If the user hit C-c before this packet, or between packets,
5149 pretend that it was hit right here. */
5153 remote_interrupt (SIGINT
);
5157 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5158 _never_ wait for ever -> test on target_is_async_p().
5159 However, before we do that we need to ensure that the caller
5160 knows how to take the target into/out of async mode. */
5161 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5162 if (!target_is_async_p ())
5163 signal (SIGINT
, ofunc
);
5168 remote_stopped_by_watchpoint_p
= 0;
5170 /* We got something. */
5171 rs
->waiting_for_stop_reply
= 0;
5173 /* Assume that the target has acknowledged Ctrl-C unless we receive
5174 an 'F' or 'O' packet. */
5175 if (buf
[0] != 'F' && buf
[0] != 'O')
5176 rs
->ctrlc_pending_p
= 0;
5180 case 'E': /* Error of some sort. */
5181 /* We're out of sync with the target now. Did it continue or
5182 not? Not is more likely, so report a stop. */
5183 warning (_("Remote failure reply: %s"), buf
);
5184 status
->kind
= TARGET_WAITKIND_STOPPED
;
5185 status
->value
.sig
= TARGET_SIGNAL_0
;
5187 case 'F': /* File-I/O request. */
5188 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5189 rs
->ctrlc_pending_p
= 0;
5191 case 'T': case 'S': case 'X': case 'W':
5193 struct stop_reply
*stop_reply
;
5194 struct cleanup
*old_chain
;
5196 stop_reply
= stop_reply_xmalloc ();
5197 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5198 remote_parse_stop_reply (buf
, stop_reply
);
5199 discard_cleanups (old_chain
);
5200 event_ptid
= process_stop_reply (stop_reply
, status
);
5203 case 'O': /* Console output. */
5204 remote_console_output (buf
+ 1);
5206 /* The target didn't really stop; keep waiting. */
5207 rs
->waiting_for_stop_reply
= 1;
5211 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5213 /* Zero length reply means that we tried 'S' or 'C' and the
5214 remote system doesn't support it. */
5215 target_terminal_ours_for_output ();
5217 ("Can't send signals to this remote system. %s not sent.\n",
5218 target_signal_to_name (last_sent_signal
));
5219 last_sent_signal
= TARGET_SIGNAL_0
;
5220 target_terminal_inferior ();
5222 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5223 putpkt ((char *) buf
);
5225 /* We just told the target to resume, so a stop reply is in
5227 rs
->waiting_for_stop_reply
= 1;
5230 /* else fallthrough */
5232 warning (_("Invalid remote reply: %s"), buf
);
5234 rs
->waiting_for_stop_reply
= 1;
5238 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5240 /* Nothing interesting happened. If we're doing a non-blocking
5241 poll, we're done. Otherwise, go back to waiting. */
5242 if (options
& TARGET_WNOHANG
)
5243 return minus_one_ptid
;
5247 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5248 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5250 if (!ptid_equal (event_ptid
, null_ptid
))
5251 record_currthread (event_ptid
);
5253 event_ptid
= inferior_ptid
;
5256 /* A process exit. Invalidate our notion of current thread. */
5257 record_currthread (minus_one_ptid
);
5262 /* Wait until the remote machine stops, then return, storing status in
5263 STATUS just as `wait' would. */
5266 remote_wait (struct target_ops
*ops
,
5267 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5272 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5274 event_ptid
= remote_wait_as (ptid
, status
, options
);
5276 if (target_can_async_p ())
5278 /* If there are are events left in the queue tell the event loop
5280 if (stop_reply_queue
)
5281 mark_async_event_handler (remote_async_inferior_event_token
);
5287 /* Fetch a single register using a 'p' packet. */
5290 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5292 struct remote_state
*rs
= get_remote_state ();
5294 char regp
[MAX_REGISTER_SIZE
];
5297 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5300 if (reg
->pnum
== -1)
5305 p
+= hexnumstr (p
, reg
->pnum
);
5308 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5312 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5316 case PACKET_UNKNOWN
:
5319 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5320 gdbarch_register_name (get_regcache_arch (regcache
),
5325 /* If this register is unfetchable, tell the regcache. */
5328 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5332 /* Otherwise, parse and supply the value. */
5338 error (_("fetch_register_using_p: early buf termination"));
5340 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5343 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5347 /* Fetch the registers included in the target's 'g' packet. */
5350 send_g_packet (void)
5352 struct remote_state
*rs
= get_remote_state ();
5355 sprintf (rs
->buf
, "g");
5356 remote_send (&rs
->buf
, &rs
->buf_size
);
5358 /* We can get out of synch in various cases. If the first character
5359 in the buffer is not a hex character, assume that has happened
5360 and try to fetch another packet to read. */
5361 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5362 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5363 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5364 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5367 fprintf_unfiltered (gdb_stdlog
,
5368 "Bad register packet; fetching a new packet\n");
5369 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5372 buf_len
= strlen (rs
->buf
);
5374 /* Sanity check the received packet. */
5375 if (buf_len
% 2 != 0)
5376 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5382 process_g_packet (struct regcache
*regcache
)
5384 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5385 struct remote_state
*rs
= get_remote_state ();
5386 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5391 buf_len
= strlen (rs
->buf
);
5393 /* Further sanity checks, with knowledge of the architecture. */
5394 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5395 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5397 /* Save the size of the packet sent to us by the target. It is used
5398 as a heuristic when determining the max size of packets that the
5399 target can safely receive. */
5400 if (rsa
->actual_register_packet_size
== 0)
5401 rsa
->actual_register_packet_size
= buf_len
;
5403 /* If this is smaller than we guessed the 'g' packet would be,
5404 update our records. A 'g' reply that doesn't include a register's
5405 value implies either that the register is not available, or that
5406 the 'p' packet must be used. */
5407 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5409 rsa
->sizeof_g_packet
= buf_len
/ 2;
5411 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5413 if (rsa
->regs
[i
].pnum
== -1)
5416 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5417 rsa
->regs
[i
].in_g_packet
= 0;
5419 rsa
->regs
[i
].in_g_packet
= 1;
5423 regs
= alloca (rsa
->sizeof_g_packet
);
5425 /* Unimplemented registers read as all bits zero. */
5426 memset (regs
, 0, rsa
->sizeof_g_packet
);
5428 /* Reply describes registers byte by byte, each byte encoded as two
5429 hex characters. Suck them all up, then supply them to the
5430 register cacheing/storage mechanism. */
5433 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5435 if (p
[0] == 0 || p
[1] == 0)
5436 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5437 internal_error (__FILE__
, __LINE__
,
5438 "unexpected end of 'g' packet reply");
5440 if (p
[0] == 'x' && p
[1] == 'x')
5441 regs
[i
] = 0; /* 'x' */
5443 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5449 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5451 struct packet_reg
*r
= &rsa
->regs
[i
];
5454 if (r
->offset
* 2 >= strlen (rs
->buf
))
5455 /* This shouldn't happen - we adjusted in_g_packet above. */
5456 internal_error (__FILE__
, __LINE__
,
5457 "unexpected end of 'g' packet reply");
5458 else if (rs
->buf
[r
->offset
* 2] == 'x')
5460 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5461 /* The register isn't available, mark it as such (at
5462 the same time setting the value to zero). */
5463 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5466 regcache_raw_supply (regcache
, r
->regnum
,
5474 fetch_registers_using_g (struct regcache
*regcache
)
5477 process_g_packet (regcache
);
5481 remote_fetch_registers (struct target_ops
*ops
,
5482 struct regcache
*regcache
, int regnum
)
5484 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5487 set_general_thread (inferior_ptid
);
5491 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5492 gdb_assert (reg
!= NULL
);
5494 /* If this register might be in the 'g' packet, try that first -
5495 we are likely to read more than one register. If this is the
5496 first 'g' packet, we might be overly optimistic about its
5497 contents, so fall back to 'p'. */
5498 if (reg
->in_g_packet
)
5500 fetch_registers_using_g (regcache
);
5501 if (reg
->in_g_packet
)
5505 if (fetch_register_using_p (regcache
, reg
))
5508 /* This register is not available. */
5509 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5514 fetch_registers_using_g (regcache
);
5516 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5517 if (!rsa
->regs
[i
].in_g_packet
)
5518 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5520 /* This register is not available. */
5521 regcache_raw_supply (regcache
, i
, NULL
);
5525 /* Prepare to store registers. Since we may send them all (using a
5526 'G' request), we have to read out the ones we don't want to change
5530 remote_prepare_to_store (struct regcache
*regcache
)
5532 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5534 gdb_byte buf
[MAX_REGISTER_SIZE
];
5536 /* Make sure the entire registers array is valid. */
5537 switch (remote_protocol_packets
[PACKET_P
].support
)
5539 case PACKET_DISABLE
:
5540 case PACKET_SUPPORT_UNKNOWN
:
5541 /* Make sure all the necessary registers are cached. */
5542 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5543 if (rsa
->regs
[i
].in_g_packet
)
5544 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5551 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5552 packet was not recognized. */
5555 store_register_using_P (const struct regcache
*regcache
,
5556 struct packet_reg
*reg
)
5558 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5559 struct remote_state
*rs
= get_remote_state ();
5560 /* Try storing a single register. */
5561 char *buf
= rs
->buf
;
5562 gdb_byte regp
[MAX_REGISTER_SIZE
];
5565 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
5568 if (reg
->pnum
== -1)
5571 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
5572 p
= buf
+ strlen (buf
);
5573 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
5574 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
5576 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5578 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
5583 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5584 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
5585 case PACKET_UNKNOWN
:
5588 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
5592 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5593 contents of the register cache buffer. FIXME: ignores errors. */
5596 store_registers_using_G (const struct regcache
*regcache
)
5598 struct remote_state
*rs
= get_remote_state ();
5599 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5603 /* Extract all the registers in the regcache copying them into a
5607 regs
= alloca (rsa
->sizeof_g_packet
);
5608 memset (regs
, 0, rsa
->sizeof_g_packet
);
5609 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5611 struct packet_reg
*r
= &rsa
->regs
[i
];
5613 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
5617 /* Command describes registers byte by byte,
5618 each byte encoded as two hex characters. */
5621 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5623 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
5625 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5626 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
5627 error (_("Could not write registers; remote failure reply '%s'"),
5631 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
5632 of the register cache buffer. FIXME: ignores errors. */
5635 remote_store_registers (struct target_ops
*ops
,
5636 struct regcache
*regcache
, int regnum
)
5638 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5641 set_general_thread (inferior_ptid
);
5645 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5646 gdb_assert (reg
!= NULL
);
5648 /* Always prefer to store registers using the 'P' packet if
5649 possible; we often change only a small number of registers.
5650 Sometimes we change a larger number; we'd need help from a
5651 higher layer to know to use 'G'. */
5652 if (store_register_using_P (regcache
, reg
))
5655 /* For now, don't complain if we have no way to write the
5656 register. GDB loses track of unavailable registers too
5657 easily. Some day, this may be an error. We don't have
5658 any way to read the register, either... */
5659 if (!reg
->in_g_packet
)
5662 store_registers_using_G (regcache
);
5666 store_registers_using_G (regcache
);
5668 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5669 if (!rsa
->regs
[i
].in_g_packet
)
5670 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
5671 /* See above for why we do not issue an error here. */
5676 /* Return the number of hex digits in num. */
5679 hexnumlen (ULONGEST num
)
5683 for (i
= 0; num
!= 0; i
++)
5689 /* Set BUF to the minimum number of hex digits representing NUM. */
5692 hexnumstr (char *buf
, ULONGEST num
)
5694 int len
= hexnumlen (num
);
5695 return hexnumnstr (buf
, num
, len
);
5699 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
5702 hexnumnstr (char *buf
, ULONGEST num
, int width
)
5708 for (i
= width
- 1; i
>= 0; i
--)
5710 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
5717 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
5720 remote_address_masked (CORE_ADDR addr
)
5722 int address_size
= remote_address_size
;
5723 /* If "remoteaddresssize" was not set, default to target address size. */
5725 address_size
= gdbarch_addr_bit (target_gdbarch
);
5727 if (address_size
> 0
5728 && address_size
< (sizeof (ULONGEST
) * 8))
5730 /* Only create a mask when that mask can safely be constructed
5731 in a ULONGEST variable. */
5733 mask
= (mask
<< address_size
) - 1;
5739 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
5740 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
5741 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
5742 (which may be more than *OUT_LEN due to escape characters). The
5743 total number of bytes in the output buffer will be at most
5747 remote_escape_output (const gdb_byte
*buffer
, int len
,
5748 gdb_byte
*out_buf
, int *out_len
,
5751 int input_index
, output_index
;
5754 for (input_index
= 0; input_index
< len
; input_index
++)
5756 gdb_byte b
= buffer
[input_index
];
5758 if (b
== '$' || b
== '#' || b
== '}')
5760 /* These must be escaped. */
5761 if (output_index
+ 2 > out_maxlen
)
5763 out_buf
[output_index
++] = '}';
5764 out_buf
[output_index
++] = b
^ 0x20;
5768 if (output_index
+ 1 > out_maxlen
)
5770 out_buf
[output_index
++] = b
;
5774 *out_len
= input_index
;
5775 return output_index
;
5778 /* Convert BUFFER, escaped data LEN bytes long, into binary data
5779 in OUT_BUF. Return the number of bytes written to OUT_BUF.
5780 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
5782 This function reverses remote_escape_output. It allows more
5783 escaped characters than that function does, in particular because
5784 '*' must be escaped to avoid the run-length encoding processing
5785 in reading packets. */
5788 remote_unescape_input (const gdb_byte
*buffer
, int len
,
5789 gdb_byte
*out_buf
, int out_maxlen
)
5791 int input_index
, output_index
;
5796 for (input_index
= 0; input_index
< len
; input_index
++)
5798 gdb_byte b
= buffer
[input_index
];
5800 if (output_index
+ 1 > out_maxlen
)
5802 warning (_("Received too much data from remote target;"
5803 " ignoring overflow."));
5804 return output_index
;
5809 out_buf
[output_index
++] = b
^ 0x20;
5815 out_buf
[output_index
++] = b
;
5819 error (_("Unmatched escape character in target response."));
5821 return output_index
;
5824 /* Determine whether the remote target supports binary downloading.
5825 This is accomplished by sending a no-op memory write of zero length
5826 to the target at the specified address. It does not suffice to send
5827 the whole packet, since many stubs strip the eighth bit and
5828 subsequently compute a wrong checksum, which causes real havoc with
5831 NOTE: This can still lose if the serial line is not eight-bit
5832 clean. In cases like this, the user should clear "remote
5836 check_binary_download (CORE_ADDR addr
)
5838 struct remote_state
*rs
= get_remote_state ();
5840 switch (remote_protocol_packets
[PACKET_X
].support
)
5842 case PACKET_DISABLE
:
5846 case PACKET_SUPPORT_UNKNOWN
:
5852 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5854 p
+= hexnumstr (p
, (ULONGEST
) 0);
5858 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
5859 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5861 if (rs
->buf
[0] == '\0')
5864 fprintf_unfiltered (gdb_stdlog
,
5865 "binary downloading NOT suppported by target\n");
5866 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
5871 fprintf_unfiltered (gdb_stdlog
,
5872 "binary downloading suppported by target\n");
5873 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
5880 /* Write memory data directly to the remote machine.
5881 This does not inform the data cache; the data cache uses this.
5882 HEADER is the starting part of the packet.
5883 MEMADDR is the address in the remote memory space.
5884 MYADDR is the address of the buffer in our space.
5885 LEN is the number of bytes.
5886 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
5887 should send data as binary ('X'), or hex-encoded ('M').
5889 The function creates packet of the form
5890 <HEADER><ADDRESS>,<LENGTH>:<DATA>
5892 where encoding of <DATA> is termined by PACKET_FORMAT.
5894 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
5897 Returns the number of bytes transferred, or 0 (setting errno) for
5898 error. Only transfer a single packet. */
5901 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
5902 const gdb_byte
*myaddr
, int len
,
5903 char packet_format
, int use_length
)
5905 struct remote_state
*rs
= get_remote_state ();
5915 if (packet_format
!= 'X' && packet_format
!= 'M')
5916 internal_error (__FILE__
, __LINE__
,
5917 "remote_write_bytes_aux: bad packet format");
5922 payload_size
= get_memory_write_packet_size ();
5924 /* The packet buffer will be large enough for the payload;
5925 get_memory_packet_size ensures this. */
5928 /* Compute the size of the actual payload by subtracting out the
5929 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
5931 payload_size
-= strlen ("$,:#NN");
5933 /* The comma won't be used. */
5935 header_length
= strlen (header
);
5936 payload_size
-= header_length
;
5937 payload_size
-= hexnumlen (memaddr
);
5939 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
5941 strcat (rs
->buf
, header
);
5942 p
= rs
->buf
+ strlen (header
);
5944 /* Compute a best guess of the number of bytes actually transfered. */
5945 if (packet_format
== 'X')
5947 /* Best guess at number of bytes that will fit. */
5948 todo
= min (len
, payload_size
);
5950 payload_size
-= hexnumlen (todo
);
5951 todo
= min (todo
, payload_size
);
5955 /* Num bytes that will fit. */
5956 todo
= min (len
, payload_size
/ 2);
5958 payload_size
-= hexnumlen (todo
);
5959 todo
= min (todo
, payload_size
/ 2);
5963 internal_error (__FILE__
, __LINE__
,
5964 _("minumum packet size too small to write data"));
5966 /* If we already need another packet, then try to align the end
5967 of this packet to a useful boundary. */
5968 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
5969 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
5971 /* Append "<memaddr>". */
5972 memaddr
= remote_address_masked (memaddr
);
5973 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
5980 /* Append <len>. Retain the location/size of <len>. It may need to
5981 be adjusted once the packet body has been created. */
5983 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
5991 /* Append the packet body. */
5992 if (packet_format
== 'X')
5994 /* Binary mode. Send target system values byte by byte, in
5995 increasing byte addresses. Only escape certain critical
5997 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6000 /* If not all TODO bytes fit, then we'll need another packet. Make
6001 a second try to keep the end of the packet aligned. Don't do
6002 this if the packet is tiny. */
6003 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6007 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6009 if (new_nr_bytes
!= nr_bytes
)
6010 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6015 p
+= payload_length
;
6016 if (use_length
&& nr_bytes
< todo
)
6018 /* Escape chars have filled up the buffer prematurely,
6019 and we have actually sent fewer bytes than planned.
6020 Fix-up the length field of the packet. Use the same
6021 number of characters as before. */
6022 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6023 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6028 /* Normal mode: Send target system values byte by byte, in
6029 increasing byte addresses. Each byte is encoded as a two hex
6031 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6035 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6036 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6038 if (rs
->buf
[0] == 'E')
6040 /* There is no correspondance between what the remote protocol
6041 uses for errors and errno codes. We would like a cleaner way
6042 of representing errors (big enough to include errno codes,
6043 bfd_error codes, and others). But for now just return EIO. */
6048 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6049 fewer bytes than we'd planned. */
6053 /* Write memory data directly to the remote machine.
6054 This does not inform the data cache; the data cache uses this.
6055 MEMADDR is the address in the remote memory space.
6056 MYADDR is the address of the buffer in our space.
6057 LEN is the number of bytes.
6059 Returns number of bytes transferred, or 0 (setting errno) for
6060 error. Only transfer a single packet. */
6063 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6065 char *packet_format
= 0;
6067 /* Check whether the target supports binary download. */
6068 check_binary_download (memaddr
);
6070 switch (remote_protocol_packets
[PACKET_X
].support
)
6073 packet_format
= "X";
6075 case PACKET_DISABLE
:
6076 packet_format
= "M";
6078 case PACKET_SUPPORT_UNKNOWN
:
6079 internal_error (__FILE__
, __LINE__
,
6080 _("remote_write_bytes: bad internal state"));
6082 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6085 return remote_write_bytes_aux (packet_format
,
6086 memaddr
, myaddr
, len
, packet_format
[0], 1);
6089 /* Read memory data directly from the remote machine.
6090 This does not use the data cache; the data cache uses this.
6091 MEMADDR is the address in the remote memory space.
6092 MYADDR is the address of the buffer in our space.
6093 LEN is the number of bytes.
6095 Returns number of bytes transferred, or 0 for error. */
6097 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
6098 remote targets) shouldn't attempt to read the entire buffer.
6099 Instead it should read a single packet worth of data and then
6100 return the byte size of that packet to the caller. The caller (its
6101 caller and its callers caller ;-) already contains code for
6102 handling partial reads. */
6105 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6107 struct remote_state
*rs
= get_remote_state ();
6108 int max_buf_size
; /* Max size of packet output buffer. */
6114 max_buf_size
= get_memory_read_packet_size ();
6115 /* The packet buffer will be large enough for the payload;
6116 get_memory_packet_size ensures this. */
6125 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
6127 /* construct "m"<memaddr>","<len>" */
6128 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
6129 memaddr
= remote_address_masked (memaddr
);
6132 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6134 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6138 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6140 if (rs
->buf
[0] == 'E'
6141 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6142 && rs
->buf
[3] == '\0')
6144 /* There is no correspondance between what the remote
6145 protocol uses for errors and errno codes. We would like
6146 a cleaner way of representing errors (big enough to
6147 include errno codes, bfd_error codes, and others). But
6148 for now just return EIO. */
6153 /* Reply describes memory byte by byte,
6154 each byte encoded as two hex characters. */
6157 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
6159 /* Reply is short. This means that we were able to read
6160 only part of what we wanted to. */
6161 return i
+ (origlen
- len
);
6171 /* Remote notification handler. */
6174 handle_notification (char *buf
, size_t length
)
6176 if (strncmp (buf
, "Stop:", 5) == 0)
6178 if (pending_stop_reply
)
6180 /* We've already parsed the in-flight stop-reply, but the
6181 stub for some reason thought we didn't, possibly due to
6182 timeout on its side. Just ignore it. */
6184 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6188 struct cleanup
*old_chain
;
6189 struct stop_reply
*reply
= stop_reply_xmalloc ();
6190 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6192 remote_parse_stop_reply (buf
+ 5, reply
);
6194 discard_cleanups (old_chain
);
6196 /* Be careful to only set it after parsing, since an error
6197 may be thrown then. */
6198 pending_stop_reply
= reply
;
6200 /* Notify the event loop there's a stop reply to acknowledge
6201 and that there may be more events to fetch. */
6202 mark_async_event_handler (remote_async_get_pending_events_token
);
6205 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6209 /* We ignore notifications we don't recognize, for compatibility
6210 with newer stubs. */
6215 /* Read or write LEN bytes from inferior memory at MEMADDR,
6216 transferring to or from debugger address BUFFER. Write to inferior
6217 if SHOULD_WRITE is nonzero. Returns length of data written or
6218 read; 0 for error. TARGET is unused. */
6221 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6222 int should_write
, struct mem_attrib
*attrib
,
6223 struct target_ops
*target
)
6227 set_general_thread (inferior_ptid
);
6230 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6232 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6237 /* Sends a packet with content determined by the printf format string
6238 FORMAT and the remaining arguments, then gets the reply. Returns
6239 whether the packet was a success, a failure, or unknown. */
6241 static enum packet_result
6242 remote_send_printf (const char *format
, ...)
6244 struct remote_state
*rs
= get_remote_state ();
6245 int max_size
= get_remote_packet_size ();
6248 va_start (ap
, format
);
6251 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6252 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
6254 if (putpkt (rs
->buf
) < 0)
6255 error (_("Communication problem with target."));
6258 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6260 return packet_check_result (rs
->buf
);
6264 restore_remote_timeout (void *p
)
6266 int value
= *(int *)p
;
6267 remote_timeout
= value
;
6270 /* Flash writing can take quite some time. We'll set
6271 effectively infinite timeout for flash operations.
6272 In future, we'll need to decide on a better approach. */
6273 static const int remote_flash_timeout
= 1000;
6276 remote_flash_erase (struct target_ops
*ops
,
6277 ULONGEST address
, LONGEST length
)
6279 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6280 int saved_remote_timeout
= remote_timeout
;
6281 enum packet_result ret
;
6283 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6284 &saved_remote_timeout
);
6285 remote_timeout
= remote_flash_timeout
;
6287 ret
= remote_send_printf ("vFlashErase:%s,%s",
6288 phex (address
, addr_size
),
6292 case PACKET_UNKNOWN
:
6293 error (_("Remote target does not support flash erase"));
6295 error (_("Error erasing flash with vFlashErase packet"));
6300 do_cleanups (back_to
);
6304 remote_flash_write (struct target_ops
*ops
,
6305 ULONGEST address
, LONGEST length
,
6306 const gdb_byte
*data
)
6308 int saved_remote_timeout
= remote_timeout
;
6310 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6311 &saved_remote_timeout
);
6313 remote_timeout
= remote_flash_timeout
;
6314 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6315 do_cleanups (back_to
);
6321 remote_flash_done (struct target_ops
*ops
)
6323 int saved_remote_timeout
= remote_timeout
;
6325 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6326 &saved_remote_timeout
);
6328 remote_timeout
= remote_flash_timeout
;
6329 ret
= remote_send_printf ("vFlashDone");
6330 do_cleanups (back_to
);
6334 case PACKET_UNKNOWN
:
6335 error (_("Remote target does not support vFlashDone"));
6337 error (_("Error finishing flash operation"));
6344 remote_files_info (struct target_ops
*ignore
)
6346 puts_filtered ("Debugging a target over a serial line.\n");
6349 /* Stuff for dealing with the packets which are part of this protocol.
6350 See comment at top of file for details. */
6352 /* Read a single character from the remote end. */
6355 readchar (int timeout
)
6359 ch
= serial_readchar (remote_desc
, timeout
);
6364 switch ((enum serial_rc
) ch
)
6368 error (_("Remote connection closed"));
6371 perror_with_name (_("Remote communication error"));
6373 case SERIAL_TIMEOUT
:
6379 /* Send the command in *BUF to the remote machine, and read the reply
6380 into *BUF. Report an error if we get an error reply. Resize
6381 *BUF using xrealloc if necessary to hold the result, and update
6385 remote_send (char **buf
,
6389 getpkt (buf
, sizeof_buf
, 0);
6391 if ((*buf
)[0] == 'E')
6392 error (_("Remote failure reply: %s"), *buf
);
6395 /* Return a pointer to an xmalloc'ed string representing an escaped
6396 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6397 etc. The caller is responsible for releasing the returned
6401 escape_buffer (const char *buf
, int n
)
6403 struct cleanup
*old_chain
;
6404 struct ui_file
*stb
;
6407 stb
= mem_fileopen ();
6408 old_chain
= make_cleanup_ui_file_delete (stb
);
6410 fputstrn_unfiltered (buf
, n
, 0, stb
);
6411 str
= ui_file_xstrdup (stb
, NULL
);
6412 do_cleanups (old_chain
);
6416 /* Display a null-terminated packet on stdout, for debugging, using C
6420 print_packet (char *buf
)
6422 puts_filtered ("\"");
6423 fputstr_filtered (buf
, '"', gdb_stdout
);
6424 puts_filtered ("\"");
6430 return putpkt_binary (buf
, strlen (buf
));
6433 /* Send a packet to the remote machine, with error checking. The data
6434 of the packet is in BUF. The string in BUF can be at most
6435 get_remote_packet_size () - 5 to account for the $, # and checksum,
6436 and for a possible /0 if we are debugging (remote_debug) and want
6437 to print the sent packet as a string. */
6440 putpkt_binary (char *buf
, int cnt
)
6442 struct remote_state
*rs
= get_remote_state ();
6444 unsigned char csum
= 0;
6445 char *buf2
= alloca (cnt
+ 6);
6451 /* Catch cases like trying to read memory or listing threads while
6452 we're waiting for a stop reply. The remote server wouldn't be
6453 ready to handle this request, so we'd hang and timeout. We don't
6454 have to worry about this in synchronous mode, because in that
6455 case it's not possible to issue a command while the target is
6456 running. This is not a problem in non-stop mode, because in that
6457 case, the stub is always ready to process serial input. */
6458 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6459 error (_("Cannot execute this command while the target is running."));
6461 /* We're sending out a new packet. Make sure we don't look at a
6462 stale cached response. */
6463 rs
->cached_wait_status
= 0;
6465 /* Copy the packet into buffer BUF2, encapsulating it
6466 and giving it a checksum. */
6471 for (i
= 0; i
< cnt
; i
++)
6477 *p
++ = tohex ((csum
>> 4) & 0xf);
6478 *p
++ = tohex (csum
& 0xf);
6480 /* Send it over and over until we get a positive ack. */
6484 int started_error_output
= 0;
6488 struct cleanup
*old_chain
;
6492 str
= escape_buffer (buf2
, p
- buf2
);
6493 old_chain
= make_cleanup (xfree
, str
);
6494 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6495 gdb_flush (gdb_stdlog
);
6496 do_cleanups (old_chain
);
6498 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6499 perror_with_name (_("putpkt: write failed"));
6501 /* If this is a no acks version of the remote protocol, send the
6502 packet and move on. */
6506 /* Read until either a timeout occurs (-2) or '+' is read.
6507 Handle any notification that arrives in the mean time. */
6510 ch
= readchar (remote_timeout
);
6518 case SERIAL_TIMEOUT
:
6521 if (started_error_output
)
6523 putchar_unfiltered ('\n');
6524 started_error_output
= 0;
6533 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6537 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6538 case SERIAL_TIMEOUT
:
6542 break; /* Retransmit buffer. */
6546 fprintf_unfiltered (gdb_stdlog
,
6547 "Packet instead of Ack, ignoring it\n");
6548 /* It's probably an old response sent because an ACK
6549 was lost. Gobble up the packet and ack it so it
6550 doesn't get retransmitted when we resend this
6553 serial_write (remote_desc
, "+", 1);
6554 continue; /* Now, go look for +. */
6561 /* If we got a notification, handle it, and go back to looking
6563 /* We've found the start of a notification. Now
6564 collect the data. */
6565 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6570 struct cleanup
*old_chain
;
6573 str
= escape_buffer (rs
->buf
, val
);
6574 old_chain
= make_cleanup (xfree
, str
);
6575 fprintf_unfiltered (gdb_stdlog
,
6576 " Notification received: %s\n",
6578 do_cleanups (old_chain
);
6580 handle_notification (rs
->buf
, val
);
6581 /* We're in sync now, rewait for the ack. */
6588 if (!started_error_output
)
6590 started_error_output
= 1;
6591 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6593 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6594 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6603 if (!started_error_output
)
6605 started_error_output
= 1;
6606 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6608 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6612 break; /* Here to retransmit. */
6616 /* This is wrong. If doing a long backtrace, the user should be
6617 able to get out next time we call QUIT, without anything as
6618 violent as interrupt_query. If we want to provide a way out of
6619 here without getting to the next QUIT, it should be based on
6620 hitting ^C twice as in remote_wait. */
6631 /* Come here after finding the start of a frame when we expected an
6632 ack. Do our best to discard the rest of this packet. */
6641 c
= readchar (remote_timeout
);
6644 case SERIAL_TIMEOUT
:
6645 /* Nothing we can do. */
6648 /* Discard the two bytes of checksum and stop. */
6649 c
= readchar (remote_timeout
);
6651 c
= readchar (remote_timeout
);
6654 case '*': /* Run length encoding. */
6655 /* Discard the repeat count. */
6656 c
= readchar (remote_timeout
);
6661 /* A regular character. */
6667 /* Come here after finding the start of the frame. Collect the rest
6668 into *BUF, verifying the checksum, length, and handling run-length
6669 compression. NUL terminate the buffer. If there is not enough room,
6670 expand *BUF using xrealloc.
6672 Returns -1 on error, number of characters in buffer (ignoring the
6673 trailing NULL) on success. (could be extended to return one of the
6674 SERIAL status indications). */
6677 read_frame (char **buf_p
,
6684 struct remote_state
*rs
= get_remote_state ();
6691 c
= readchar (remote_timeout
);
6694 case SERIAL_TIMEOUT
:
6696 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
6700 fputs_filtered ("Saw new packet start in middle of old one\n",
6702 return -1; /* Start a new packet, count retries. */
6705 unsigned char pktcsum
;
6711 check_0
= readchar (remote_timeout
);
6713 check_1
= readchar (remote_timeout
);
6715 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
6718 fputs_filtered ("Timeout in checksum, retrying\n",
6722 else if (check_0
< 0 || check_1
< 0)
6725 fputs_filtered ("Communication error in checksum\n",
6730 /* Don't recompute the checksum; with no ack packets we
6731 don't have any way to indicate a packet retransmission
6736 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
6737 if (csum
== pktcsum
)
6742 struct cleanup
*old_chain
;
6745 str
= escape_buffer (buf
, bc
);
6746 old_chain
= make_cleanup (xfree
, str
);
6747 fprintf_unfiltered (gdb_stdlog
,
6749 Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
6750 pktcsum
, csum
, str
);
6751 do_cleanups (old_chain
);
6753 /* Number of characters in buffer ignoring trailing
6757 case '*': /* Run length encoding. */
6762 c
= readchar (remote_timeout
);
6764 repeat
= c
- ' ' + 3; /* Compute repeat count. */
6766 /* The character before ``*'' is repeated. */
6768 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
6770 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
6772 /* Make some more room in the buffer. */
6773 *sizeof_buf
+= repeat
;
6774 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6778 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
6784 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
6788 if (bc
>= *sizeof_buf
- 1)
6790 /* Make some more room in the buffer. */
6792 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6803 /* Read a packet from the remote machine, with error checking, and
6804 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6805 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6806 rather than timing out; this is used (in synchronous mode) to wait
6807 for a target that is is executing user code to stop. */
6808 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
6809 don't have to change all the calls to getpkt to deal with the
6810 return value, because at the moment I don't know what the right
6811 thing to do it for those. */
6819 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
6823 /* Read a packet from the remote machine, with error checking, and
6824 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6825 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6826 rather than timing out; this is used (in synchronous mode) to wait
6827 for a target that is is executing user code to stop. If FOREVER ==
6828 0, this function is allowed to time out gracefully and return an
6829 indication of this to the caller. Otherwise return the number of
6830 bytes read. If EXPECTING_NOTIF, consider receiving a notification
6831 enough reason to return to the caller. */
6834 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
6835 int expecting_notif
)
6837 struct remote_state
*rs
= get_remote_state ();
6843 /* We're reading a new response. Make sure we don't look at a
6844 previously cached response. */
6845 rs
->cached_wait_status
= 0;
6847 strcpy (*buf
, "timeout");
6850 timeout
= watchdog
> 0 ? watchdog
: -1;
6851 else if (expecting_notif
)
6852 timeout
= 0; /* There should already be a char in the buffer. If
6855 timeout
= remote_timeout
;
6859 /* Process any number of notifications, and then return when
6863 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
6865 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
6867 /* This can loop forever if the remote side sends us
6868 characters continuously, but if it pauses, we'll get
6869 SERIAL_TIMEOUT from readchar because of timeout. Then
6870 we'll count that as a retry.
6872 Note that even when forever is set, we will only wait
6873 forever prior to the start of a packet. After that, we
6874 expect characters to arrive at a brisk pace. They should
6875 show up within remote_timeout intervals. */
6877 c
= readchar (timeout
);
6878 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
6880 if (c
== SERIAL_TIMEOUT
)
6882 if (expecting_notif
)
6883 return -1; /* Don't complain, it's normal to not get
6884 anything in this case. */
6886 if (forever
) /* Watchdog went off? Kill the target. */
6890 error (_("Watchdog timeout has expired. Target detached."));
6893 fputs_filtered ("Timed out.\n", gdb_stdlog
);
6897 /* We've found the start of a packet or notification.
6898 Now collect the data. */
6899 val
= read_frame (buf
, sizeof_buf
);
6904 serial_write (remote_desc
, "-", 1);
6907 if (tries
> MAX_TRIES
)
6909 /* We have tried hard enough, and just can't receive the
6910 packet/notification. Give up. */
6911 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
6913 /* Skip the ack char if we're in no-ack mode. */
6914 if (!rs
->noack_mode
)
6915 serial_write (remote_desc
, "+", 1);
6919 /* If we got an ordinary packet, return that to our caller. */
6924 struct cleanup
*old_chain
;
6927 str
= escape_buffer (*buf
, val
);
6928 old_chain
= make_cleanup (xfree
, str
);
6929 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
6930 do_cleanups (old_chain
);
6933 /* Skip the ack char if we're in no-ack mode. */
6934 if (!rs
->noack_mode
)
6935 serial_write (remote_desc
, "+", 1);
6939 /* If we got a notification, handle it, and go back to looking
6943 gdb_assert (c
== '%');
6947 struct cleanup
*old_chain
;
6950 str
= escape_buffer (*buf
, val
);
6951 old_chain
= make_cleanup (xfree
, str
);
6952 fprintf_unfiltered (gdb_stdlog
,
6953 " Notification received: %s\n",
6955 do_cleanups (old_chain
);
6958 handle_notification (*buf
, val
);
6960 /* Notifications require no acknowledgement. */
6962 if (expecting_notif
)
6969 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
6971 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
6975 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
6977 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
6982 remote_kill (struct target_ops
*ops
)
6984 /* Use catch_errors so the user can quit from gdb even when we
6985 aren't on speaking terms with the remote system. */
6986 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
6988 /* Don't wait for it to die. I'm not really sure it matters whether
6989 we do or not. For the existing stubs, kill is a noop. */
6990 target_mourn_inferior ();
6994 remote_vkill (int pid
, struct remote_state
*rs
)
6996 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
6999 /* Tell the remote target to detach. */
7000 sprintf (rs
->buf
, "vKill;%x", pid
);
7002 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7004 if (packet_ok (rs
->buf
,
7005 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7007 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7014 extended_remote_kill (struct target_ops
*ops
)
7017 int pid
= ptid_get_pid (inferior_ptid
);
7018 struct remote_state
*rs
= get_remote_state ();
7020 res
= remote_vkill (pid
, rs
);
7021 if (res
== -1 && !remote_multi_process_p (rs
))
7023 /* Don't try 'k' on a multi-process aware stub -- it has no way
7024 to specify the pid. */
7028 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7029 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7032 /* Don't wait for it to die. I'm not really sure it matters whether
7033 we do or not. For the existing stubs, kill is a noop. */
7039 error (_("Can't kill process"));
7041 target_mourn_inferior ();
7045 remote_mourn (struct target_ops
*ops
)
7047 remote_mourn_1 (ops
);
7050 /* Worker function for remote_mourn. */
7052 remote_mourn_1 (struct target_ops
*target
)
7054 unpush_target (target
);
7056 /* remote_close takes care of doing most of the clean up. */
7057 generic_mourn_inferior ();
7061 extended_remote_mourn_1 (struct target_ops
*target
)
7063 struct remote_state
*rs
= get_remote_state ();
7065 /* In case we got here due to an error, but we're going to stay
7067 rs
->waiting_for_stop_reply
= 0;
7069 /* We're no longer interested in these events. */
7070 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7072 /* If the current general thread belonged to the process we just
7073 detached from or has exited, the remote side current general
7074 thread becomes undefined. Considering a case like this:
7076 - We just got here due to a detach.
7077 - The process that we're detaching from happens to immediately
7078 report a global breakpoint being hit in non-stop mode, in the
7079 same thread we had selected before.
7080 - GDB attaches to this process again.
7081 - This event happens to be the next event we handle.
7083 GDB would consider that the current general thread didn't need to
7084 be set on the stub side (with Hg), since for all it knew,
7085 GENERAL_THREAD hadn't changed.
7087 Notice that although in all-stop mode, the remote server always
7088 sets the current thread to the thread reporting the stop event,
7089 that doesn't happen in non-stop mode; in non-stop, the stub *must
7090 not* change the current thread when reporting a breakpoint hit,
7091 due to the decoupling of event reporting and event handling.
7093 To keep things simple, we always invalidate our notion of the
7095 record_currthread (minus_one_ptid
);
7097 /* Unlike "target remote", we do not want to unpush the target; then
7098 the next time the user says "run", we won't be connected. */
7100 /* Call common code to mark the inferior as not running. */
7101 generic_mourn_inferior ();
7103 if (!have_inferiors ())
7105 if (!remote_multi_process_p (rs
))
7107 /* Check whether the target is running now - some remote stubs
7108 automatically restart after kill. */
7110 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7112 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7114 /* Assume that the target has been restarted. Set inferior_ptid
7115 so that bits of core GDB realizes there's something here, e.g.,
7116 so that the user can say "kill" again. */
7117 inferior_ptid
= magic_null_ptid
;
7124 extended_remote_mourn (struct target_ops
*ops
)
7126 extended_remote_mourn_1 (ops
);
7130 extended_remote_run (char *args
)
7132 struct remote_state
*rs
= get_remote_state ();
7135 /* If the user has disabled vRun support, or we have detected that
7136 support is not available, do not try it. */
7137 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7140 strcpy (rs
->buf
, "vRun;");
7141 len
= strlen (rs
->buf
);
7143 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7144 error (_("Remote file name too long for run packet"));
7145 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7147 gdb_assert (args
!= NULL
);
7150 struct cleanup
*back_to
;
7154 argv
= gdb_buildargv (args
);
7155 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7156 for (i
= 0; argv
[i
] != NULL
; i
++)
7158 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7159 error (_("Argument list too long for run packet"));
7160 rs
->buf
[len
++] = ';';
7161 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7163 do_cleanups (back_to
);
7166 rs
->buf
[len
++] = '\0';
7169 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7171 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7173 /* We have a wait response; we don't need it, though. All is well. */
7176 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7177 /* It wasn't disabled before, but it is now. */
7181 if (remote_exec_file
[0] == '\0')
7182 error (_("Running the default executable on the remote target failed; "
7183 "try \"set remote exec-file\"?"));
7185 error (_("Running \"%s\" on the remote target failed"),
7190 /* In the extended protocol we want to be able to do things like
7191 "run" and have them basically work as expected. So we need
7192 a special create_inferior function. We support changing the
7193 executable file and the command line arguments, but not the
7197 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7198 char **env
, int from_tty
)
7200 /* If running asynchronously, register the target file descriptor
7201 with the event loop. */
7202 if (target_can_async_p ())
7203 target_async (inferior_event_handler
, 0);
7205 /* Now restart the remote server. */
7206 if (extended_remote_run (args
) == -1)
7208 /* vRun was not supported. Fail if we need it to do what the
7210 if (remote_exec_file
[0])
7211 error (_("Remote target does not support \"set remote exec-file\""));
7213 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7215 /* Fall back to "R". */
7216 extended_remote_restart ();
7219 if (!have_inferiors ())
7221 /* Clean up from the last time we ran, before we mark the target
7222 running again. This will mark breakpoints uninserted, and
7223 get_offsets may insert breakpoints. */
7224 init_thread_list ();
7225 init_wait_for_inferior ();
7228 /* Now mark the inferior as running before we do anything else. */
7229 inferior_ptid
= magic_null_ptid
;
7231 /* Now, if we have thread information, update inferior_ptid. */
7232 inferior_ptid
= remote_current_thread (inferior_ptid
);
7234 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7235 add_thread_silent (inferior_ptid
);
7237 /* Get updated offsets, if the stub uses qOffsets. */
7242 extended_remote_create_inferior (struct target_ops
*ops
,
7243 char *exec_file
, char *args
,
7244 char **env
, int from_tty
)
7246 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7250 /* Insert a breakpoint. On targets that have software breakpoint
7251 support, we ask the remote target to do the work; on targets
7252 which don't, we insert a traditional memory breakpoint. */
7255 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7256 struct bp_target_info
*bp_tgt
)
7258 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7259 If it succeeds, then set the support to PACKET_ENABLE. If it
7260 fails, and the user has explicitly requested the Z support then
7261 report an error, otherwise, mark it disabled and go on. */
7263 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7265 CORE_ADDR addr
= bp_tgt
->placed_address
;
7266 struct remote_state
*rs
;
7270 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7272 rs
= get_remote_state ();
7278 addr
= (ULONGEST
) remote_address_masked (addr
);
7279 p
+= hexnumstr (p
, addr
);
7280 sprintf (p
, ",%d", bpsize
);
7283 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7285 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7290 bp_tgt
->placed_address
= addr
;
7291 bp_tgt
->placed_size
= bpsize
;
7293 case PACKET_UNKNOWN
:
7298 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7302 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7303 struct bp_target_info
*bp_tgt
)
7305 CORE_ADDR addr
= bp_tgt
->placed_address
;
7306 struct remote_state
*rs
= get_remote_state ();
7308 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7316 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7317 p
+= hexnumstr (p
, addr
);
7318 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7321 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7323 return (rs
->buf
[0] == 'E');
7326 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7330 watchpoint_to_Z_packet (int type
)
7335 return Z_PACKET_WRITE_WP
;
7338 return Z_PACKET_READ_WP
;
7341 return Z_PACKET_ACCESS_WP
;
7344 internal_error (__FILE__
, __LINE__
,
7345 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7350 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
7352 struct remote_state
*rs
= get_remote_state ();
7354 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7356 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7359 sprintf (rs
->buf
, "Z%x,", packet
);
7360 p
= strchr (rs
->buf
, '\0');
7361 addr
= remote_address_masked (addr
);
7362 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7363 sprintf (p
, ",%x", len
);
7366 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7368 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7372 case PACKET_UNKNOWN
:
7377 internal_error (__FILE__
, __LINE__
,
7378 _("remote_insert_watchpoint: reached end of function"));
7383 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
7385 struct remote_state
*rs
= get_remote_state ();
7387 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7389 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7392 sprintf (rs
->buf
, "z%x,", packet
);
7393 p
= strchr (rs
->buf
, '\0');
7394 addr
= remote_address_masked (addr
);
7395 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7396 sprintf (p
, ",%x", len
);
7398 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7400 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7403 case PACKET_UNKNOWN
:
7408 internal_error (__FILE__
, __LINE__
,
7409 _("remote_remove_watchpoint: reached end of function"));
7413 int remote_hw_watchpoint_limit
= -1;
7414 int remote_hw_breakpoint_limit
= -1;
7417 remote_check_watch_resources (int type
, int cnt
, int ot
)
7419 if (type
== bp_hardware_breakpoint
)
7421 if (remote_hw_breakpoint_limit
== 0)
7423 else if (remote_hw_breakpoint_limit
< 0)
7425 else if (cnt
<= remote_hw_breakpoint_limit
)
7430 if (remote_hw_watchpoint_limit
== 0)
7432 else if (remote_hw_watchpoint_limit
< 0)
7436 else if (cnt
<= remote_hw_watchpoint_limit
)
7443 remote_stopped_by_watchpoint (void)
7445 return remote_stopped_by_watchpoint_p
;
7449 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7452 if (remote_stopped_by_watchpoint ())
7454 *addr_p
= remote_watch_data_address
;
7463 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7464 struct bp_target_info
*bp_tgt
)
7467 struct remote_state
*rs
;
7470 /* The length field should be set to the size of a breakpoint
7471 instruction, even though we aren't inserting one ourselves. */
7473 gdbarch_remote_breakpoint_from_pc
7474 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7476 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7479 rs
= get_remote_state ();
7486 addr
= remote_address_masked (bp_tgt
->placed_address
);
7487 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7488 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7491 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7493 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7496 case PACKET_UNKNOWN
:
7501 internal_error (__FILE__
, __LINE__
,
7502 _("remote_insert_hw_breakpoint: reached end of function"));
7507 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7508 struct bp_target_info
*bp_tgt
)
7511 struct remote_state
*rs
= get_remote_state ();
7514 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7521 addr
= remote_address_masked (bp_tgt
->placed_address
);
7522 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7523 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7526 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7528 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7531 case PACKET_UNKNOWN
:
7536 internal_error (__FILE__
, __LINE__
,
7537 _("remote_remove_hw_breakpoint: reached end of function"));
7540 /* Table used by the crc32 function to calcuate the checksum. */
7542 static unsigned long crc32_table
[256] =
7545 static unsigned long
7546 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
7548 if (!crc32_table
[1])
7550 /* Initialize the CRC table and the decoding table. */
7554 for (i
= 0; i
< 256; i
++)
7556 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7557 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7564 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7570 /* Verify memory using the "qCRC:" request. */
7573 remote_verify_memory (struct target_ops
*ops
,
7574 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
7576 struct remote_state
*rs
= get_remote_state ();
7577 unsigned long host_crc
, target_crc
;
7580 /* FIXME: assumes lma can fit into long. */
7581 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7582 (long) lma
, (long) size
);
7585 /* Be clever; compute the host_crc before waiting for target
7587 host_crc
= crc32 (data
, size
, 0xffffffff);
7589 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7590 if (rs
->buf
[0] == 'E')
7593 if (rs
->buf
[0] != 'C')
7594 error (_("remote target does not support this operation"));
7596 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7597 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7599 return (host_crc
== target_crc
);
7602 /* compare-sections command
7604 With no arguments, compares each loadable section in the exec bfd
7605 with the same memory range on the target, and reports mismatches.
7606 Useful for verifying the image on the target against the exec file. */
7609 compare_sections_command (char *args
, int from_tty
)
7612 struct cleanup
*old_chain
;
7614 const char *sectname
;
7622 error (_("command cannot be used without an exec file"));
7624 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
7626 if (!(s
->flags
& SEC_LOAD
))
7627 continue; /* skip non-loadable section */
7629 size
= bfd_get_section_size (s
);
7631 continue; /* skip zero-length section */
7633 sectname
= bfd_get_section_name (exec_bfd
, s
);
7634 if (args
&& strcmp (args
, sectname
) != 0)
7635 continue; /* not the section selected by user */
7637 matched
= 1; /* do this section */
7640 sectdata
= xmalloc (size
);
7641 old_chain
= make_cleanup (xfree
, sectdata
);
7642 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
7644 res
= target_verify_memory (sectdata
, lma
, size
);
7647 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
7648 paddress (target_gdbarch
, lma
),
7649 paddress (target_gdbarch
, lma
+ size
));
7651 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
7652 paddress (target_gdbarch
, lma
),
7653 paddress (target_gdbarch
, lma
+ size
));
7655 printf_filtered ("matched.\n");
7658 printf_filtered ("MIS-MATCHED!\n");
7662 do_cleanups (old_chain
);
7665 warning (_("One or more sections of the remote executable does not match\n\
7666 the loaded file\n"));
7667 if (args
&& !matched
)
7668 printf_filtered (_("No loaded section named '%s'.\n"), args
);
7671 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7672 into remote target. The number of bytes written to the remote
7673 target is returned, or -1 for error. */
7676 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
7677 const char *annex
, const gdb_byte
*writebuf
,
7678 ULONGEST offset
, LONGEST len
,
7679 struct packet_config
*packet
)
7683 struct remote_state
*rs
= get_remote_state ();
7684 int max_size
= get_memory_write_packet_size ();
7686 if (packet
->support
== PACKET_DISABLE
)
7689 /* Insert header. */
7690 i
= snprintf (rs
->buf
, max_size
,
7691 "qXfer:%s:write:%s:%s:",
7692 object_name
, annex
? annex
: "",
7693 phex_nz (offset
, sizeof offset
));
7694 max_size
-= (i
+ 1);
7696 /* Escape as much data as fits into rs->buf. */
7697 buf_len
= remote_escape_output
7698 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
7700 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
7701 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
7702 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7705 unpack_varlen_hex (rs
->buf
, &n
);
7709 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
7710 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
7711 number of bytes read is returned, or 0 for EOF, or -1 for error.
7712 The number of bytes read may be less than LEN without indicating an
7713 EOF. PACKET is checked and updated to indicate whether the remote
7714 target supports this object. */
7717 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
7719 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
7720 struct packet_config
*packet
)
7722 static char *finished_object
;
7723 static char *finished_annex
;
7724 static ULONGEST finished_offset
;
7726 struct remote_state
*rs
= get_remote_state ();
7727 LONGEST i
, n
, packet_len
;
7729 if (packet
->support
== PACKET_DISABLE
)
7732 /* Check whether we've cached an end-of-object packet that matches
7734 if (finished_object
)
7736 if (strcmp (object_name
, finished_object
) == 0
7737 && strcmp (annex
? annex
: "", finished_annex
) == 0
7738 && offset
== finished_offset
)
7741 /* Otherwise, we're now reading something different. Discard
7743 xfree (finished_object
);
7744 xfree (finished_annex
);
7745 finished_object
= NULL
;
7746 finished_annex
= NULL
;
7749 /* Request only enough to fit in a single packet. The actual data
7750 may not, since we don't know how much of it will need to be escaped;
7751 the target is free to respond with slightly less data. We subtract
7752 five to account for the response type and the protocol frame. */
7753 n
= min (get_remote_packet_size () - 5, len
);
7754 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
7755 object_name
, annex
? annex
: "",
7756 phex_nz (offset
, sizeof offset
),
7757 phex_nz (n
, sizeof n
));
7758 i
= putpkt (rs
->buf
);
7763 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
7764 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7767 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
7768 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
7770 /* 'm' means there is (or at least might be) more data after this
7771 batch. That does not make sense unless there's at least one byte
7772 of data in this reply. */
7773 if (rs
->buf
[0] == 'm' && packet_len
== 1)
7774 error (_("Remote qXfer reply contained no data."));
7776 /* Got some data. */
7777 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
7779 /* 'l' is an EOF marker, possibly including a final block of data,
7780 or possibly empty. If we have the final block of a non-empty
7781 object, record this fact to bypass a subsequent partial read. */
7782 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
7784 finished_object
= xstrdup (object_name
);
7785 finished_annex
= xstrdup (annex
? annex
: "");
7786 finished_offset
= offset
+ i
;
7793 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
7794 const char *annex
, gdb_byte
*readbuf
,
7795 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
7797 struct remote_state
*rs
;
7802 set_general_thread (inferior_ptid
);
7804 rs
= get_remote_state ();
7806 /* Handle memory using the standard memory routines. */
7807 if (object
== TARGET_OBJECT_MEMORY
)
7812 /* If the remote target is connected but not running, we should
7813 pass this request down to a lower stratum (e.g. the executable
7815 if (!target_has_execution
)
7818 if (writebuf
!= NULL
)
7819 xfered
= remote_write_bytes (offset
, writebuf
, len
);
7821 xfered
= remote_read_bytes (offset
, readbuf
, len
);
7825 else if (xfered
== 0 && errno
== 0)
7831 /* Handle SPU memory using qxfer packets. */
7832 if (object
== TARGET_OBJECT_SPU
)
7835 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
7836 &remote_protocol_packets
7837 [PACKET_qXfer_spu_read
]);
7839 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
7840 &remote_protocol_packets
7841 [PACKET_qXfer_spu_write
]);
7844 /* Handle extra signal info using qxfer packets. */
7845 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
7848 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
7849 &remote_protocol_packets
7850 [PACKET_qXfer_siginfo_read
]);
7852 return remote_write_qxfer (ops
, "siginfo", annex
, writebuf
, offset
, len
,
7853 &remote_protocol_packets
7854 [PACKET_qXfer_siginfo_write
]);
7857 /* Only handle flash writes. */
7858 if (writebuf
!= NULL
)
7864 case TARGET_OBJECT_FLASH
:
7865 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
7869 else if (xfered
== 0 && errno
== 0)
7879 /* Map pre-existing objects onto letters. DO NOT do this for new
7880 objects!!! Instead specify new query packets. */
7883 case TARGET_OBJECT_AVR
:
7887 case TARGET_OBJECT_AUXV
:
7888 gdb_assert (annex
== NULL
);
7889 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
7890 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
7892 case TARGET_OBJECT_AVAILABLE_FEATURES
:
7893 return remote_read_qxfer
7894 (ops
, "features", annex
, readbuf
, offset
, len
,
7895 &remote_protocol_packets
[PACKET_qXfer_features
]);
7897 case TARGET_OBJECT_LIBRARIES
:
7898 return remote_read_qxfer
7899 (ops
, "libraries", annex
, readbuf
, offset
, len
,
7900 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
7902 case TARGET_OBJECT_MEMORY_MAP
:
7903 gdb_assert (annex
== NULL
);
7904 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
7905 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
7907 case TARGET_OBJECT_OSDATA
:
7908 /* Should only get here if we're connected. */
7909 gdb_assert (remote_desc
);
7910 return remote_read_qxfer
7911 (ops
, "osdata", annex
, readbuf
, offset
, len
,
7912 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
7914 case TARGET_OBJECT_THREADS
:
7915 gdb_assert (annex
== NULL
);
7916 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
7917 &remote_protocol_packets
[PACKET_qXfer_threads
]);
7923 /* Note: a zero OFFSET and LEN can be used to query the minimum
7925 if (offset
== 0 && len
== 0)
7926 return (get_remote_packet_size ());
7927 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
7928 large enough let the caller deal with it. */
7929 if (len
< get_remote_packet_size ())
7931 len
= get_remote_packet_size ();
7933 /* Except for querying the minimum buffer size, target must be open. */
7935 error (_("remote query is only available after target open"));
7937 gdb_assert (annex
!= NULL
);
7938 gdb_assert (readbuf
!= NULL
);
7944 /* We used one buffer char for the remote protocol q command and
7945 another for the query type. As the remote protocol encapsulation
7946 uses 4 chars plus one extra in case we are debugging
7947 (remote_debug), we have PBUFZIZ - 7 left to pack the query
7950 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
7952 /* Bad caller may have sent forbidden characters. */
7953 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
7958 gdb_assert (annex
[i
] == '\0');
7960 i
= putpkt (rs
->buf
);
7964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7965 strcpy ((char *) readbuf
, rs
->buf
);
7967 return strlen ((char *) readbuf
);
7971 remote_search_memory (struct target_ops
* ops
,
7972 CORE_ADDR start_addr
, ULONGEST search_space_len
,
7973 const gdb_byte
*pattern
, ULONGEST pattern_len
,
7974 CORE_ADDR
*found_addrp
)
7976 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
7977 struct remote_state
*rs
= get_remote_state ();
7978 int max_size
= get_memory_write_packet_size ();
7979 struct packet_config
*packet
=
7980 &remote_protocol_packets
[PACKET_qSearch_memory
];
7981 /* number of packet bytes used to encode the pattern,
7982 this could be more than PATTERN_LEN due to escape characters */
7983 int escaped_pattern_len
;
7984 /* amount of pattern that was encodable in the packet */
7985 int used_pattern_len
;
7988 ULONGEST found_addr
;
7990 /* Don't go to the target if we don't have to.
7991 This is done before checking packet->support to avoid the possibility that
7992 a success for this edge case means the facility works in general. */
7993 if (pattern_len
> search_space_len
)
7995 if (pattern_len
== 0)
7997 *found_addrp
= start_addr
;
8001 /* If we already know the packet isn't supported, fall back to the simple
8002 way of searching memory. */
8004 if (packet
->support
== PACKET_DISABLE
)
8006 /* Target doesn't provided special support, fall back and use the
8007 standard support (copy memory and do the search here). */
8008 return simple_search_memory (ops
, start_addr
, search_space_len
,
8009 pattern
, pattern_len
, found_addrp
);
8012 /* Insert header. */
8013 i
= snprintf (rs
->buf
, max_size
,
8014 "qSearch:memory:%s;%s;",
8015 phex_nz (start_addr
, addr_size
),
8016 phex_nz (search_space_len
, sizeof (search_space_len
)));
8017 max_size
-= (i
+ 1);
8019 /* Escape as much data as fits into rs->buf. */
8020 escaped_pattern_len
=
8021 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8022 &used_pattern_len
, max_size
);
8024 /* Bail if the pattern is too large. */
8025 if (used_pattern_len
!= pattern_len
)
8026 error ("Pattern is too large to transmit to remote target.");
8028 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8029 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8030 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8032 /* The request may not have worked because the command is not
8033 supported. If so, fall back to the simple way. */
8034 if (packet
->support
== PACKET_DISABLE
)
8036 return simple_search_memory (ops
, start_addr
, search_space_len
,
8037 pattern
, pattern_len
, found_addrp
);
8042 if (rs
->buf
[0] == '0')
8044 else if (rs
->buf
[0] == '1')
8047 if (rs
->buf
[1] != ',')
8048 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8049 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8050 *found_addrp
= found_addr
;
8053 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8059 remote_rcmd (char *command
,
8060 struct ui_file
*outbuf
)
8062 struct remote_state
*rs
= get_remote_state ();
8066 error (_("remote rcmd is only available after target open"));
8068 /* Send a NULL command across as an empty command. */
8069 if (command
== NULL
)
8072 /* The query prefix. */
8073 strcpy (rs
->buf
, "qRcmd,");
8074 p
= strchr (rs
->buf
, '\0');
8076 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
8077 error (_("\"monitor\" command ``%s'' is too long."), command
);
8079 /* Encode the actual command. */
8080 bin2hex ((gdb_byte
*) command
, p
, 0);
8082 if (putpkt (rs
->buf
) < 0)
8083 error (_("Communication problem with target."));
8085 /* get/display the response */
8090 /* XXX - see also remote_get_noisy_reply(). */
8092 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8095 error (_("Target does not support this command."));
8096 if (buf
[0] == 'O' && buf
[1] != 'K')
8098 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8101 if (strcmp (buf
, "OK") == 0)
8103 if (strlen (buf
) == 3 && buf
[0] == 'E'
8104 && isdigit (buf
[1]) && isdigit (buf
[2]))
8106 error (_("Protocol error with Rcmd"));
8108 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8110 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8111 fputc_unfiltered (c
, outbuf
);
8117 static VEC(mem_region_s
) *
8118 remote_memory_map (struct target_ops
*ops
)
8120 VEC(mem_region_s
) *result
= NULL
;
8121 char *text
= target_read_stralloc (¤t_target
,
8122 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8126 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8127 result
= parse_memory_map (text
);
8128 do_cleanups (back_to
);
8135 packet_command (char *args
, int from_tty
)
8137 struct remote_state
*rs
= get_remote_state ();
8140 error (_("command can only be used with remote target"));
8143 error (_("remote-packet command requires packet text as argument"));
8145 puts_filtered ("sending: ");
8146 print_packet (args
);
8147 puts_filtered ("\n");
8150 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8151 puts_filtered ("received: ");
8152 print_packet (rs
->buf
);
8153 puts_filtered ("\n");
8157 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8159 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8161 static void threadset_test_cmd (char *cmd
, int tty
);
8163 static void threadalive_test (char *cmd
, int tty
);
8165 static void threadlist_test_cmd (char *cmd
, int tty
);
8167 int get_and_display_threadinfo (threadref
*ref
);
8169 static void threadinfo_test_cmd (char *cmd
, int tty
);
8171 static int thread_display_step (threadref
*ref
, void *context
);
8173 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8175 static void init_remote_threadtests (void);
8177 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8180 threadset_test_cmd (char *cmd
, int tty
)
8182 int sample_thread
= SAMPLE_THREAD
;
8184 printf_filtered (_("Remote threadset test\n"));
8185 set_general_thread (sample_thread
);
8190 threadalive_test (char *cmd
, int tty
)
8192 int sample_thread
= SAMPLE_THREAD
;
8193 int pid
= ptid_get_pid (inferior_ptid
);
8194 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8196 if (remote_thread_alive (ptid
))
8197 printf_filtered ("PASS: Thread alive test\n");
8199 printf_filtered ("FAIL: Thread alive test\n");
8202 void output_threadid (char *title
, threadref
*ref
);
8205 output_threadid (char *title
, threadref
*ref
)
8209 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8211 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8215 threadlist_test_cmd (char *cmd
, int tty
)
8218 threadref nextthread
;
8219 int done
, result_count
;
8220 threadref threadlist
[3];
8222 printf_filtered ("Remote Threadlist test\n");
8223 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8224 &result_count
, &threadlist
[0]))
8225 printf_filtered ("FAIL: threadlist test\n");
8228 threadref
*scan
= threadlist
;
8229 threadref
*limit
= scan
+ result_count
;
8231 while (scan
< limit
)
8232 output_threadid (" thread ", scan
++);
8237 display_thread_info (struct gdb_ext_thread_info
*info
)
8239 output_threadid ("Threadid: ", &info
->threadid
);
8240 printf_filtered ("Name: %s\n ", info
->shortname
);
8241 printf_filtered ("State: %s\n", info
->display
);
8242 printf_filtered ("other: %s\n\n", info
->more_display
);
8246 get_and_display_threadinfo (threadref
*ref
)
8250 struct gdb_ext_thread_info threadinfo
;
8252 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8253 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8254 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8255 display_thread_info (&threadinfo
);
8260 threadinfo_test_cmd (char *cmd
, int tty
)
8262 int athread
= SAMPLE_THREAD
;
8266 int_to_threadref (&thread
, athread
);
8267 printf_filtered ("Remote Threadinfo test\n");
8268 if (!get_and_display_threadinfo (&thread
))
8269 printf_filtered ("FAIL cannot get thread info\n");
8273 thread_display_step (threadref
*ref
, void *context
)
8275 /* output_threadid(" threadstep ",ref); *//* simple test */
8276 return get_and_display_threadinfo (ref
);
8280 threadlist_update_test_cmd (char *cmd
, int tty
)
8282 printf_filtered ("Remote Threadlist update test\n");
8283 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8287 init_remote_threadtests (void)
8289 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
8290 Fetch and print the remote list of thread identifiers, one pkt only"));
8291 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8292 _("Fetch and display info about one thread"));
8293 add_com ("tset", class_obscure
, threadset_test_cmd
,
8294 _("Test setting to a different thread"));
8295 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8296 _("Iterate through updating all remote thread info"));
8297 add_com ("talive", class_obscure
, threadalive_test
,
8298 _(" Remote thread alive test "));
8303 /* Convert a thread ID to a string. Returns the string in a static
8307 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8309 static char buf
[64];
8310 struct remote_state
*rs
= get_remote_state ();
8312 if (ptid_is_pid (ptid
))
8314 /* Printing an inferior target id. */
8316 /* When multi-process extensions are off, there's no way in the
8317 remote protocol to know the remote process id, if there's any
8318 at all. There's one exception --- when we're connected with
8319 target extended-remote, and we manually attached to a process
8320 with "attach PID". We don't record anywhere a flag that
8321 allows us to distinguish that case from the case of
8322 connecting with extended-remote and the stub already being
8323 attached to a process, and reporting yes to qAttached, hence
8324 no smart special casing here. */
8325 if (!remote_multi_process_p (rs
))
8327 xsnprintf (buf
, sizeof buf
, "Remote target");
8331 return normal_pid_to_str (ptid
);
8335 if (ptid_equal (magic_null_ptid
, ptid
))
8336 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8337 else if (remote_multi_process_p (rs
))
8338 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8339 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8341 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8342 ptid_get_tid (ptid
));
8347 /* Get the address of the thread local variable in OBJFILE which is
8348 stored at OFFSET within the thread local storage for thread PTID. */
8351 remote_get_thread_local_address (struct target_ops
*ops
,
8352 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8354 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8356 struct remote_state
*rs
= get_remote_state ();
8358 char *endp
= rs
->buf
+ get_remote_packet_size ();
8359 enum packet_result result
;
8361 strcpy (p
, "qGetTLSAddr:");
8363 p
= write_ptid (p
, endp
, ptid
);
8365 p
+= hexnumstr (p
, offset
);
8367 p
+= hexnumstr (p
, lm
);
8371 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8372 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8373 if (result
== PACKET_OK
)
8377 unpack_varlen_hex (rs
->buf
, &result
);
8380 else if (result
== PACKET_UNKNOWN
)
8381 throw_error (TLS_GENERIC_ERROR
,
8382 _("Remote target doesn't support qGetTLSAddr packet"));
8384 throw_error (TLS_GENERIC_ERROR
,
8385 _("Remote target failed to process qGetTLSAddr request"));
8388 throw_error (TLS_GENERIC_ERROR
,
8389 _("TLS not supported or disabled on this target"));
8394 /* Support for inferring a target description based on the current
8395 architecture and the size of a 'g' packet. While the 'g' packet
8396 can have any size (since optional registers can be left off the
8397 end), some sizes are easily recognizable given knowledge of the
8398 approximate architecture. */
8400 struct remote_g_packet_guess
8403 const struct target_desc
*tdesc
;
8405 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8406 DEF_VEC_O(remote_g_packet_guess_s
);
8408 struct remote_g_packet_data
8410 VEC(remote_g_packet_guess_s
) *guesses
;
8413 static struct gdbarch_data
*remote_g_packet_data_handle
;
8416 remote_g_packet_data_init (struct obstack
*obstack
)
8418 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8422 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8423 const struct target_desc
*tdesc
)
8425 struct remote_g_packet_data
*data
8426 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8427 struct remote_g_packet_guess new_guess
, *guess
;
8430 gdb_assert (tdesc
!= NULL
);
8433 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8435 if (guess
->bytes
== bytes
)
8436 internal_error (__FILE__
, __LINE__
,
8437 "Duplicate g packet description added for size %d",
8440 new_guess
.bytes
= bytes
;
8441 new_guess
.tdesc
= tdesc
;
8442 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8445 /* Return 1 if remote_read_description would do anything on this target
8446 and architecture, 0 otherwise. */
8449 remote_read_description_p (struct target_ops
*target
)
8451 struct remote_g_packet_data
*data
8452 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8454 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8460 static const struct target_desc
*
8461 remote_read_description (struct target_ops
*target
)
8463 struct remote_g_packet_data
*data
8464 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8466 /* Do not try this during initial connection, when we do not know
8467 whether there is a running but stopped thread. */
8468 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8471 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8473 struct remote_g_packet_guess
*guess
;
8475 int bytes
= send_g_packet ();
8478 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8480 if (guess
->bytes
== bytes
)
8481 return guess
->tdesc
;
8483 /* We discard the g packet. A minor optimization would be to
8484 hold on to it, and fill the register cache once we have selected
8485 an architecture, but it's too tricky to do safely. */
8491 /* Remote file transfer support. This is host-initiated I/O, not
8492 target-initiated; for target-initiated, see remote-fileio.c. */
8494 /* If *LEFT is at least the length of STRING, copy STRING to
8495 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8496 decrease *LEFT. Otherwise raise an error. */
8499 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8501 int len
= strlen (string
);
8504 error (_("Packet too long for target."));
8506 memcpy (*buffer
, string
, len
);
8510 /* NUL-terminate the buffer as a convenience, if there is
8516 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8517 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8518 decrease *LEFT. Otherwise raise an error. */
8521 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8524 if (2 * len
> *left
)
8525 error (_("Packet too long for target."));
8527 bin2hex (bytes
, *buffer
, len
);
8531 /* NUL-terminate the buffer as a convenience, if there is
8537 /* If *LEFT is large enough, convert VALUE to hex and add it to
8538 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8539 decrease *LEFT. Otherwise raise an error. */
8542 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8544 int len
= hexnumlen (value
);
8547 error (_("Packet too long for target."));
8549 hexnumstr (*buffer
, value
);
8553 /* NUL-terminate the buffer as a convenience, if there is
8559 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8560 value, *REMOTE_ERRNO to the remote error number or zero if none
8561 was included, and *ATTACHMENT to point to the start of the annex
8562 if any. The length of the packet isn't needed here; there may
8563 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8565 Return 0 if the packet could be parsed, -1 if it could not. If
8566 -1 is returned, the other variables may not be initialized. */
8569 remote_hostio_parse_result (char *buffer
, int *retcode
,
8570 int *remote_errno
, char **attachment
)
8577 if (buffer
[0] != 'F')
8581 *retcode
= strtol (&buffer
[1], &p
, 16);
8582 if (errno
!= 0 || p
== &buffer
[1])
8585 /* Check for ",errno". */
8589 *remote_errno
= strtol (p
+ 1, &p2
, 16);
8590 if (errno
!= 0 || p
+ 1 == p2
)
8595 /* Check for ";attachment". If there is no attachment, the
8596 packet should end here. */
8599 *attachment
= p
+ 1;
8602 else if (*p
== '\0')
8608 /* Send a prepared I/O packet to the target and read its response.
8609 The prepared packet is in the global RS->BUF before this function
8610 is called, and the answer is there when we return.
8612 COMMAND_BYTES is the length of the request to send, which may include
8613 binary data. WHICH_PACKET is the packet configuration to check
8614 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8615 is set to the error number and -1 is returned. Otherwise the value
8616 returned by the function is returned.
8618 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8619 attachment is expected; an error will be reported if there's a
8620 mismatch. If one is found, *ATTACHMENT will be set to point into
8621 the packet buffer and *ATTACHMENT_LEN will be set to the
8622 attachment's length. */
8625 remote_hostio_send_command (int command_bytes
, int which_packet
,
8626 int *remote_errno
, char **attachment
,
8627 int *attachment_len
)
8629 struct remote_state
*rs
= get_remote_state ();
8630 int ret
, bytes_read
;
8631 char *attachment_tmp
;
8634 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
8636 *remote_errno
= FILEIO_ENOSYS
;
8640 putpkt_binary (rs
->buf
, command_bytes
);
8641 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8643 /* If it timed out, something is wrong. Don't try to parse the
8647 *remote_errno
= FILEIO_EINVAL
;
8651 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
8654 *remote_errno
= FILEIO_EINVAL
;
8656 case PACKET_UNKNOWN
:
8657 *remote_errno
= FILEIO_ENOSYS
;
8663 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
8666 *remote_errno
= FILEIO_EINVAL
;
8670 /* Make sure we saw an attachment if and only if we expected one. */
8671 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
8672 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
8674 *remote_errno
= FILEIO_EINVAL
;
8678 /* If an attachment was found, it must point into the packet buffer;
8679 work out how many bytes there were. */
8680 if (attachment_tmp
!= NULL
)
8682 *attachment
= attachment_tmp
;
8683 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
8689 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
8690 remote file descriptor, or -1 if an error occurs (and set
8694 remote_hostio_open (const char *filename
, int flags
, int mode
,
8697 struct remote_state
*rs
= get_remote_state ();
8699 int left
= get_remote_packet_size () - 1;
8701 remote_buffer_add_string (&p
, &left
, "vFile:open:");
8703 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8705 remote_buffer_add_string (&p
, &left
, ",");
8707 remote_buffer_add_int (&p
, &left
, flags
);
8708 remote_buffer_add_string (&p
, &left
, ",");
8710 remote_buffer_add_int (&p
, &left
, mode
);
8712 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
8713 remote_errno
, NULL
, NULL
);
8716 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
8717 Return the number of bytes written, or -1 if an error occurs (and
8718 set *REMOTE_ERRNO). */
8721 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
8722 ULONGEST offset
, int *remote_errno
)
8724 struct remote_state
*rs
= get_remote_state ();
8726 int left
= get_remote_packet_size ();
8729 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
8731 remote_buffer_add_int (&p
, &left
, fd
);
8732 remote_buffer_add_string (&p
, &left
, ",");
8734 remote_buffer_add_int (&p
, &left
, offset
);
8735 remote_buffer_add_string (&p
, &left
, ",");
8737 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
8738 get_remote_packet_size () - (p
- rs
->buf
));
8740 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
8741 remote_errno
, NULL
, NULL
);
8744 /* Read up to LEN bytes FD on the remote target into READ_BUF
8745 Return the number of bytes read, or -1 if an error occurs (and
8746 set *REMOTE_ERRNO). */
8749 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
8750 ULONGEST offset
, int *remote_errno
)
8752 struct remote_state
*rs
= get_remote_state ();
8755 int left
= get_remote_packet_size ();
8756 int ret
, attachment_len
;
8759 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
8761 remote_buffer_add_int (&p
, &left
, fd
);
8762 remote_buffer_add_string (&p
, &left
, ",");
8764 remote_buffer_add_int (&p
, &left
, len
);
8765 remote_buffer_add_string (&p
, &left
, ",");
8767 remote_buffer_add_int (&p
, &left
, offset
);
8769 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
8770 remote_errno
, &attachment
,
8776 read_len
= remote_unescape_input (attachment
, attachment_len
,
8778 if (read_len
!= ret
)
8779 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
8784 /* Close FD on the remote target. Return 0, or -1 if an error occurs
8785 (and set *REMOTE_ERRNO). */
8788 remote_hostio_close (int fd
, int *remote_errno
)
8790 struct remote_state
*rs
= get_remote_state ();
8792 int left
= get_remote_packet_size () - 1;
8794 remote_buffer_add_string (&p
, &left
, "vFile:close:");
8796 remote_buffer_add_int (&p
, &left
, fd
);
8798 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
8799 remote_errno
, NULL
, NULL
);
8802 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
8803 occurs (and set *REMOTE_ERRNO). */
8806 remote_hostio_unlink (const char *filename
, int *remote_errno
)
8808 struct remote_state
*rs
= get_remote_state ();
8810 int left
= get_remote_packet_size () - 1;
8812 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
8814 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8817 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
8818 remote_errno
, NULL
, NULL
);
8822 remote_fileio_errno_to_host (int errnum
)
8846 case FILEIO_ENOTDIR
:
8866 case FILEIO_ENAMETOOLONG
:
8867 return ENAMETOOLONG
;
8873 remote_hostio_error (int errnum
)
8875 int host_error
= remote_fileio_errno_to_host (errnum
);
8877 if (host_error
== -1)
8878 error (_("Unknown remote I/O error %d"), errnum
);
8880 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
8884 remote_hostio_close_cleanup (void *opaque
)
8886 int fd
= *(int *) opaque
;
8889 remote_hostio_close (fd
, &remote_errno
);
8894 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
8896 const char *filename
= bfd_get_filename (abfd
);
8897 int fd
, remote_errno
;
8900 gdb_assert (remote_filename_p (filename
));
8902 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
8905 errno
= remote_fileio_errno_to_host (remote_errno
);
8906 bfd_set_error (bfd_error_system_call
);
8910 stream
= xmalloc (sizeof (int));
8916 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
8918 int fd
= *(int *)stream
;
8923 /* Ignore errors on close; these may happen if the remote
8924 connection was already torn down. */
8925 remote_hostio_close (fd
, &remote_errno
);
8931 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
8932 file_ptr nbytes
, file_ptr offset
)
8934 int fd
= *(int *)stream
;
8936 file_ptr pos
, bytes
;
8939 while (nbytes
> pos
)
8941 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
8942 offset
+ pos
, &remote_errno
);
8944 /* Success, but no bytes, means end-of-file. */
8948 errno
= remote_fileio_errno_to_host (remote_errno
);
8949 bfd_set_error (bfd_error_system_call
);
8960 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
8962 /* FIXME: We should probably implement remote_hostio_stat. */
8963 sb
->st_size
= INT_MAX
;
8968 remote_filename_p (const char *filename
)
8970 return strncmp (filename
, "remote:", 7) == 0;
8974 remote_bfd_open (const char *remote_file
, const char *target
)
8976 return bfd_openr_iovec (remote_file
, target
,
8977 remote_bfd_iovec_open
, NULL
,
8978 remote_bfd_iovec_pread
,
8979 remote_bfd_iovec_close
,
8980 remote_bfd_iovec_stat
);
8984 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
8986 struct cleanup
*back_to
, *close_cleanup
;
8987 int retcode
, fd
, remote_errno
, bytes
, io_size
;
8990 int bytes_in_buffer
;
8995 error (_("command can only be used with remote target"));
8997 file
= fopen (local_file
, "rb");
8999 perror_with_name (local_file
);
9000 back_to
= make_cleanup_fclose (file
);
9002 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9004 0700, &remote_errno
);
9006 remote_hostio_error (remote_errno
);
9008 /* Send up to this many bytes at once. They won't all fit in the
9009 remote packet limit, so we'll transfer slightly fewer. */
9010 io_size
= get_remote_packet_size ();
9011 buffer
= xmalloc (io_size
);
9012 make_cleanup (xfree
, buffer
);
9014 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9016 bytes_in_buffer
= 0;
9019 while (bytes_in_buffer
|| !saw_eof
)
9023 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
9028 error (_("Error reading %s."), local_file
);
9031 /* EOF. Unless there is something still in the
9032 buffer from the last iteration, we are done. */
9034 if (bytes_in_buffer
== 0)
9042 bytes
+= bytes_in_buffer
;
9043 bytes_in_buffer
= 0;
9045 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
9048 remote_hostio_error (remote_errno
);
9049 else if (retcode
== 0)
9050 error (_("Remote write of %d bytes returned 0!"), bytes
);
9051 else if (retcode
< bytes
)
9053 /* Short write. Save the rest of the read data for the next
9055 bytes_in_buffer
= bytes
- retcode
;
9056 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9062 discard_cleanups (close_cleanup
);
9063 if (remote_hostio_close (fd
, &remote_errno
))
9064 remote_hostio_error (remote_errno
);
9067 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9068 do_cleanups (back_to
);
9072 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9074 struct cleanup
*back_to
, *close_cleanup
;
9075 int fd
, remote_errno
, bytes
, io_size
;
9081 error (_("command can only be used with remote target"));
9083 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9085 remote_hostio_error (remote_errno
);
9087 file
= fopen (local_file
, "wb");
9089 perror_with_name (local_file
);
9090 back_to
= make_cleanup_fclose (file
);
9092 /* Send up to this many bytes at once. They won't all fit in the
9093 remote packet limit, so we'll transfer slightly fewer. */
9094 io_size
= get_remote_packet_size ();
9095 buffer
= xmalloc (io_size
);
9096 make_cleanup (xfree
, buffer
);
9098 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9103 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9105 /* Success, but no bytes, means end-of-file. */
9108 remote_hostio_error (remote_errno
);
9112 bytes
= fwrite (buffer
, 1, bytes
, file
);
9114 perror_with_name (local_file
);
9117 discard_cleanups (close_cleanup
);
9118 if (remote_hostio_close (fd
, &remote_errno
))
9119 remote_hostio_error (remote_errno
);
9122 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9123 do_cleanups (back_to
);
9127 remote_file_delete (const char *remote_file
, int from_tty
)
9129 int retcode
, remote_errno
;
9132 error (_("command can only be used with remote target"));
9134 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9136 remote_hostio_error (remote_errno
);
9139 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9143 remote_put_command (char *args
, int from_tty
)
9145 struct cleanup
*back_to
;
9149 error_no_arg (_("file to put"));
9151 argv
= gdb_buildargv (args
);
9152 back_to
= make_cleanup_freeargv (argv
);
9153 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9154 error (_("Invalid parameters to remote put"));
9156 remote_file_put (argv
[0], argv
[1], from_tty
);
9158 do_cleanups (back_to
);
9162 remote_get_command (char *args
, int from_tty
)
9164 struct cleanup
*back_to
;
9168 error_no_arg (_("file to get"));
9170 argv
= gdb_buildargv (args
);
9171 back_to
= make_cleanup_freeargv (argv
);
9172 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9173 error (_("Invalid parameters to remote get"));
9175 remote_file_get (argv
[0], argv
[1], from_tty
);
9177 do_cleanups (back_to
);
9181 remote_delete_command (char *args
, int from_tty
)
9183 struct cleanup
*back_to
;
9187 error_no_arg (_("file to delete"));
9189 argv
= gdb_buildargv (args
);
9190 back_to
= make_cleanup_freeargv (argv
);
9191 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9192 error (_("Invalid parameters to remote delete"));
9194 remote_file_delete (argv
[0], from_tty
);
9196 do_cleanups (back_to
);
9200 remote_command (char *args
, int from_tty
)
9202 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9206 remote_can_execute_reverse (void)
9208 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9209 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9216 remote_supports_non_stop (void)
9222 remote_supports_multi_process (void)
9224 struct remote_state
*rs
= get_remote_state ();
9225 return remote_multi_process_p (rs
);
9229 remote_supports_cond_tracepoints (void)
9231 struct remote_state
*rs
= get_remote_state ();
9232 return rs
->cond_tracepoints
;
9236 remote_supports_fast_tracepoints (void)
9238 struct remote_state
*rs
= get_remote_state ();
9239 return rs
->fast_tracepoints
;
9243 remote_trace_init ()
9246 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9247 if (strcmp (target_buf
, "OK"))
9248 error (_("Target does not support this command."));
9251 static void free_actions_list (char **actions_list
);
9252 static void free_actions_list_cleanup_wrapper (void *);
9254 free_actions_list_cleanup_wrapper (void *al
)
9256 free_actions_list (al
);
9260 free_actions_list (char **actions_list
)
9264 if (actions_list
== 0)
9267 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9268 xfree (actions_list
[ndx
]);
9270 xfree (actions_list
);
9273 /* Recursive routine to walk through command list including loops, and
9274 download packets for each command. */
9277 remote_download_command_source (int num
, ULONGEST addr
,
9278 struct command_line
*cmds
)
9280 struct remote_state
*rs
= get_remote_state ();
9281 struct command_line
*cmd
;
9283 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
9285 QUIT
; /* allow user to bail out with ^C */
9286 strcpy (rs
->buf
, "QTDPsrc:");
9287 encode_source_string (num
, addr
, "cmd", cmd
->line
,
9288 rs
->buf
+ strlen (rs
->buf
),
9289 rs
->buf_size
- strlen (rs
->buf
));
9291 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9292 if (strcmp (target_buf
, "OK"))
9293 warning (_("Target does not support source download."));
9295 if (cmd
->control_type
== while_control
9296 || cmd
->control_type
== while_stepping_control
)
9298 remote_download_command_source (num
, addr
, *cmd
->body_list
);
9300 QUIT
; /* allow user to bail out with ^C */
9301 strcpy (rs
->buf
, "QTDPsrc:");
9302 encode_source_string (num
, addr
, "cmd", "end",
9303 rs
->buf
+ strlen (rs
->buf
),
9304 rs
->buf_size
- strlen (rs
->buf
));
9306 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9307 if (strcmp (target_buf
, "OK"))
9308 warning (_("Target does not support source download."));
9314 remote_download_tracepoint (struct breakpoint
*t
)
9316 struct bp_location
*loc
;
9321 char **stepping_actions
;
9323 struct cleanup
*old_chain
= NULL
;
9324 struct agent_expr
*aexpr
;
9325 struct cleanup
*aexpr_chain
= NULL
;
9328 /* Iterate over all the tracepoint locations. It's up to the target to
9329 notice multiple tracepoint packets with the same number but different
9330 addresses, and treat them as multiple locations. */
9331 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
9333 encode_actions (t
, loc
, &tdp_actions
, &stepping_actions
);
9334 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9336 (void) make_cleanup (free_actions_list_cleanup_wrapper
, stepping_actions
);
9338 tpaddr
= loc
->address
;
9339 sprintf_vma (addrbuf
, tpaddr
);
9340 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", t
->number
,
9341 addrbuf
, /* address */
9342 (t
->enable_state
== bp_enabled
? 'E' : 'D'),
9343 t
->step_count
, t
->pass_count
);
9344 /* Fast tracepoints are mostly handled by the target, but we can
9345 tell the target how big of an instruction block should be moved
9347 if (t
->type
== bp_fast_tracepoint
)
9349 /* Only test for support at download time; we may not know
9350 target capabilities at definition time. */
9351 if (remote_supports_fast_tracepoints ())
9355 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9356 tpaddr
, &isize
, NULL
))
9357 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9359 /* If it passed validation at definition but fails now,
9360 something is very wrong. */
9361 internal_error (__FILE__
, __LINE__
,
9362 "Fast tracepoint not valid during download");
9365 /* Fast tracepoints are functionally identical to regular
9366 tracepoints, so don't take lack of support as a reason to
9367 give up on the trace run. */
9368 warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t
->number
);
9370 /* If the tracepoint has a conditional, make it into an agent
9371 expression and append to the definition. */
9374 /* Only test support at download time, we may not know target
9375 capabilities at definition time. */
9376 if (remote_supports_cond_tracepoints ())
9378 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
9379 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9380 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9381 pkt
= buf
+ strlen (buf
);
9382 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9383 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9385 do_cleanups (aexpr_chain
);
9388 warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t
->number
);
9391 if (t
->commands
|| *default_collect
)
9394 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9395 if (strcmp (target_buf
, "OK"))
9396 error (_("Target does not support tracepoints."));
9398 /* do_single_steps (t); */
9401 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9403 QUIT
; /* allow user to bail out with ^C */
9404 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9405 t
->number
, addrbuf
, /* address */
9407 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9410 remote_get_noisy_reply (&target_buf
,
9412 if (strcmp (target_buf
, "OK"))
9413 error (_("Error on target while setting tracepoints."));
9416 if (stepping_actions
)
9418 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9420 QUIT
; /* allow user to bail out with ^C */
9421 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9422 t
->number
, addrbuf
, /* address */
9423 ((ndx
== 0) ? "S" : ""),
9424 stepping_actions
[ndx
],
9425 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9427 remote_get_noisy_reply (&target_buf
,
9429 if (strcmp (target_buf
, "OK"))
9430 error (_("Error on target while setting tracepoints."));
9434 if (remote_protocol_packets
[PACKET_TracepointSource
].support
== PACKET_ENABLE
)
9438 strcpy (buf
, "QTDPsrc:");
9439 encode_source_string (t
->number
, loc
->address
,
9440 "at", t
->addr_string
, buf
+ strlen (buf
),
9441 2048 - strlen (buf
));
9444 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9445 if (strcmp (target_buf
, "OK"))
9446 warning (_("Target does not support source download."));
9450 strcpy (buf
, "QTDPsrc:");
9451 encode_source_string (t
->number
, loc
->address
,
9452 "cond", t
->cond_string
, buf
+ strlen (buf
),
9453 2048 - strlen (buf
));
9455 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9456 if (strcmp (target_buf
, "OK"))
9457 warning (_("Target does not support source download."));
9459 remote_download_command_source (t
->number
, loc
->address
,
9460 t
->commands
->commands
);
9463 do_cleanups (old_chain
);
9468 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9470 struct remote_state
*rs
= get_remote_state ();
9473 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9474 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9475 p
= rs
->buf
+ strlen (rs
->buf
);
9476 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9477 error (_("Trace state variable name too long for tsv definition packet"));
9478 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9481 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9485 remote_trace_set_readonly_regions ()
9493 return; /* No information to give. */
9495 strcpy (target_buf
, "QTro");
9496 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9498 char tmp1
[40], tmp2
[40];
9500 if ((s
->flags
& SEC_LOAD
) == 0 ||
9501 /* (s->flags & SEC_CODE) == 0 || */
9502 (s
->flags
& SEC_READONLY
) == 0)
9507 size
= bfd_get_section_size (s
);
9508 sprintf_vma (tmp1
, lma
);
9509 sprintf_vma (tmp2
, lma
+ size
);
9510 sprintf (target_buf
+ strlen (target_buf
),
9511 ":%s,%s", tmp1
, tmp2
);
9515 putpkt (target_buf
);
9516 getpkt (&target_buf
, &target_buf_size
, 0);
9521 remote_trace_start ()
9524 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9525 if (strcmp (target_buf
, "OK"))
9526 error (_("Bogus reply from target: %s"), target_buf
);
9530 remote_get_trace_status (struct trace_status
*ts
)
9532 char *p
, *p1
, *p_temp
;
9534 /* FIXME we need to get register block size some other way */
9535 extern int trace_regblock_size
;
9536 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
9538 putpkt ("qTStatus");
9539 getpkt (&target_buf
, &target_buf_size
, 0);
9540 /* FIXME should handle more variety of replies */
9544 /* If the remote target doesn't do tracing, flag it. */
9548 /* We're working with a live target. */
9551 /* Set some defaults. */
9552 ts
->running_known
= 0;
9553 ts
->stop_reason
= trace_stop_reason_unknown
;
9554 ts
->traceframe_count
= -1;
9555 ts
->buffer_free
= 0;
9558 error (_("Bogus trace status reply from target: %s"), target_buf
);
9560 parse_trace_status (p
, ts
);
9566 remote_trace_stop ()
9569 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9570 if (strcmp (target_buf
, "OK"))
9571 error (_("Bogus reply from target: %s"), target_buf
);
9575 remote_trace_find (enum trace_find_type type
, int num
,
9576 ULONGEST addr1
, ULONGEST addr2
,
9579 struct remote_state
*rs
= get_remote_state ();
9581 int target_frameno
= -1, target_tracept
= -1;
9584 strcpy (p
, "QTFrame:");
9585 p
= strchr (p
, '\0');
9589 sprintf (p
, "%x", num
);
9592 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
9595 sprintf (p
, "tdp:%x", num
);
9598 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9601 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9604 error ("Unknown trace find type %d", type
);
9608 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
9610 while (reply
&& *reply
)
9615 target_frameno
= (int) strtol (p
, &reply
, 16);
9617 error (_("Unable to parse trace frame number"));
9618 if (target_frameno
== -1)
9623 target_tracept
= (int) strtol (p
, &reply
, 16);
9625 error (_("Unable to parse tracepoint number"));
9627 case 'O': /* "OK"? */
9628 if (reply
[1] == 'K' && reply
[2] == '\0')
9631 error (_("Bogus reply from target: %s"), reply
);
9634 error (_("Bogus reply from target: %s"), reply
);
9637 *tpp
= target_tracept
;
9638 return target_frameno
;
9642 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
9644 struct remote_state
*rs
= get_remote_state ();
9648 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
9650 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9651 if (reply
&& *reply
)
9655 unpack_varlen_hex (reply
+ 1, &uval
);
9656 *val
= (LONGEST
) uval
;
9664 remote_save_trace_data (const char *filename
)
9666 struct remote_state
*rs
= get_remote_state ();
9670 strcpy (p
, "QTSave:");
9672 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
9673 error (_("Remote file name too long for trace save packet"));
9674 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
9677 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9681 /* This is basically a memory transfer, but needs to be its own packet
9682 because we don't know how the target actually organizes its trace
9683 memory, plus we want to be able to ask for as much as possible, but
9684 not be unhappy if we don't get as much as we ask for. */
9687 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
9689 struct remote_state
*rs
= get_remote_state ();
9695 strcpy (p
, "qTBuffer:");
9697 p
+= hexnumstr (p
, offset
);
9699 p
+= hexnumstr (p
, len
);
9703 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9704 if (reply
&& *reply
)
9706 /* 'l' by itself means we're at the end of the buffer and
9707 there is nothing more to get. */
9711 /* Convert the reply into binary. Limit the number of bytes to
9712 convert according to our passed-in buffer size, rather than
9713 what was returned in the packet; if the target is
9714 unexpectedly generous and gives us a bigger reply than we
9715 asked for, we don't want to crash. */
9716 rslt
= hex2bin (target_buf
, buf
, len
);
9720 /* Something went wrong, flag as an error. */
9725 remote_set_disconnected_tracing (int val
)
9727 struct remote_state
*rs
= get_remote_state ();
9729 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
9731 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9732 if (strcmp (target_buf
, "OK"))
9733 error (_("Target does not support this command."));
9737 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
9739 struct thread_info
*info
= find_thread_ptid (ptid
);
9740 if (info
&& info
->private)
9741 return info
->private->core
;
9746 remote_set_circular_trace_buffer (int val
)
9748 struct remote_state
*rs
= get_remote_state ();
9750 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
9752 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9753 if (strcmp (target_buf
, "OK"))
9754 error (_("Target does not support this command."));
9758 init_remote_ops (void)
9760 remote_ops
.to_shortname
= "remote";
9761 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
9763 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9764 Specify the serial device it is connected to\n\
9765 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
9766 remote_ops
.to_open
= remote_open
;
9767 remote_ops
.to_close
= remote_close
;
9768 remote_ops
.to_detach
= remote_detach
;
9769 remote_ops
.to_disconnect
= remote_disconnect
;
9770 remote_ops
.to_resume
= remote_resume
;
9771 remote_ops
.to_wait
= remote_wait
;
9772 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
9773 remote_ops
.to_store_registers
= remote_store_registers
;
9774 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
9775 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
9776 remote_ops
.to_files_info
= remote_files_info
;
9777 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
9778 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
9779 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
9780 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
9781 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
9782 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
9783 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
9784 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
9785 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
9786 remote_ops
.to_kill
= remote_kill
;
9787 remote_ops
.to_load
= generic_load
;
9788 remote_ops
.to_mourn_inferior
= remote_mourn
;
9789 remote_ops
.to_thread_alive
= remote_thread_alive
;
9790 remote_ops
.to_find_new_threads
= remote_threads_info
;
9791 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
9792 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
9793 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
9794 remote_ops
.to_stop
= remote_stop
;
9795 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
9796 remote_ops
.to_rcmd
= remote_rcmd
;
9797 remote_ops
.to_log_command
= serial_log_command
;
9798 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
9799 remote_ops
.to_stratum
= process_stratum
;
9800 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
9801 remote_ops
.to_has_memory
= default_child_has_memory
;
9802 remote_ops
.to_has_stack
= default_child_has_stack
;
9803 remote_ops
.to_has_registers
= default_child_has_registers
;
9804 remote_ops
.to_has_execution
= default_child_has_execution
;
9805 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
9806 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
9807 remote_ops
.to_magic
= OPS_MAGIC
;
9808 remote_ops
.to_memory_map
= remote_memory_map
;
9809 remote_ops
.to_flash_erase
= remote_flash_erase
;
9810 remote_ops
.to_flash_done
= remote_flash_done
;
9811 remote_ops
.to_read_description
= remote_read_description
;
9812 remote_ops
.to_search_memory
= remote_search_memory
;
9813 remote_ops
.to_can_async_p
= remote_can_async_p
;
9814 remote_ops
.to_is_async_p
= remote_is_async_p
;
9815 remote_ops
.to_async
= remote_async
;
9816 remote_ops
.to_async_mask
= remote_async_mask
;
9817 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
9818 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
9819 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
9820 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
9821 remote_ops
.to_trace_init
= remote_trace_init
;
9822 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
9823 remote_ops
.to_download_trace_state_variable
= remote_download_trace_state_variable
;
9824 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
9825 remote_ops
.to_trace_start
= remote_trace_start
;
9826 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
9827 remote_ops
.to_trace_stop
= remote_trace_stop
;
9828 remote_ops
.to_trace_find
= remote_trace_find
;
9829 remote_ops
.to_get_trace_state_variable_value
= remote_get_trace_state_variable_value
;
9830 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
9831 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
9832 remote_ops
.to_upload_trace_state_variables
= remote_upload_trace_state_variables
;
9833 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
9834 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
9835 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
9836 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
9837 remote_ops
.to_verify_memory
= remote_verify_memory
;
9840 /* Set up the extended remote vector by making a copy of the standard
9841 remote vector and adding to it. */
9844 init_extended_remote_ops (void)
9846 extended_remote_ops
= remote_ops
;
9848 extended_remote_ops
.to_shortname
= "extended-remote";
9849 extended_remote_ops
.to_longname
=
9850 "Extended remote serial target in gdb-specific protocol";
9851 extended_remote_ops
.to_doc
=
9852 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9853 Specify the serial device it is connected to (e.g. /dev/ttya).";
9854 extended_remote_ops
.to_open
= extended_remote_open
;
9855 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
9856 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
9857 extended_remote_ops
.to_detach
= extended_remote_detach
;
9858 extended_remote_ops
.to_attach
= extended_remote_attach
;
9859 extended_remote_ops
.to_kill
= extended_remote_kill
;
9863 remote_can_async_p (void)
9865 if (!target_async_permitted
)
9866 /* We only enable async when the user specifically asks for it. */
9869 /* We're async whenever the serial device is. */
9870 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
9874 remote_is_async_p (void)
9876 if (!target_async_permitted
)
9877 /* We only enable async when the user specifically asks for it. */
9880 /* We're async whenever the serial device is. */
9881 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
9884 /* Pass the SERIAL event on and up to the client. One day this code
9885 will be able to delay notifying the client of an event until the
9886 point where an entire packet has been received. */
9888 static void (*async_client_callback
) (enum inferior_event_type event_type
,
9890 static void *async_client_context
;
9891 static serial_event_ftype remote_async_serial_handler
;
9894 remote_async_serial_handler (struct serial
*scb
, void *context
)
9896 /* Don't propogate error information up to the client. Instead let
9897 the client find out about the error by querying the target. */
9898 async_client_callback (INF_REG_EVENT
, async_client_context
);
9902 remote_async_inferior_event_handler (gdb_client_data data
)
9904 inferior_event_handler (INF_REG_EVENT
, NULL
);
9908 remote_async_get_pending_events_handler (gdb_client_data data
)
9910 remote_get_pending_stop_replies ();
9914 remote_async (void (*callback
) (enum inferior_event_type event_type
,
9915 void *context
), void *context
)
9917 if (remote_async_mask_value
== 0)
9918 internal_error (__FILE__
, __LINE__
,
9919 _("Calling remote_async when async is masked"));
9921 if (callback
!= NULL
)
9923 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
9924 async_client_callback
= callback
;
9925 async_client_context
= context
;
9928 serial_async (remote_desc
, NULL
, NULL
);
9932 remote_async_mask (int new_mask
)
9934 int curr_mask
= remote_async_mask_value
;
9935 remote_async_mask_value
= new_mask
;
9940 set_remote_cmd (char *args
, int from_tty
)
9942 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
9946 show_remote_cmd (char *args
, int from_tty
)
9948 /* We can't just use cmd_show_list here, because we want to skip
9949 the redundant "show remote Z-packet" and the legacy aliases. */
9950 struct cleanup
*showlist_chain
;
9951 struct cmd_list_element
*list
= remote_show_cmdlist
;
9953 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
9954 for (; list
!= NULL
; list
= list
->next
)
9955 if (strcmp (list
->name
, "Z-packet") == 0)
9957 else if (list
->type
== not_set_cmd
)
9958 /* Alias commands are exactly like the original, except they
9959 don't have the normal type. */
9963 struct cleanup
*option_chain
9964 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
9965 ui_out_field_string (uiout
, "name", list
->name
);
9966 ui_out_text (uiout
, ": ");
9967 if (list
->type
== show_cmd
)
9968 do_setshow_command ((char *) NULL
, from_tty
, list
);
9970 cmd_func (list
, NULL
, from_tty
);
9971 /* Close the tuple. */
9972 do_cleanups (option_chain
);
9975 /* Close the tuple. */
9976 do_cleanups (showlist_chain
);
9980 /* Function to be called whenever a new objfile (shlib) is detected. */
9982 remote_new_objfile (struct objfile
*objfile
)
9984 if (remote_desc
!= 0) /* Have a remote connection. */
9985 remote_check_symbols (objfile
);
9988 /* Pull all the tracepoints defined on the target and create local
9989 data structures representing them. We don't want to create real
9990 tracepoints yet, we don't want to mess up the user's existing
9994 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
9996 struct remote_state
*rs
= get_remote_state ();
9999 /* Ask for a first packet of tracepoint definition. */
10001 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10003 while (*p
&& *p
!= 'l')
10005 parse_tracepoint_definition (p
, utpp
);
10006 /* Ask for another packet of tracepoint definition. */
10008 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10015 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
10017 struct remote_state
*rs
= get_remote_state ();
10020 /* Ask for a first packet of variable definition. */
10022 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10024 while (*p
&& *p
!= 'l')
10026 parse_tsv_definition (p
, utsvp
);
10027 /* Ask for another packet of variable definition. */
10029 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10036 _initialize_remote (void)
10038 struct remote_state
*rs
;
10039 struct cmd_list_element
*cmd
;
10042 /* architecture specific data */
10043 remote_gdbarch_data_handle
=
10044 gdbarch_data_register_post_init (init_remote_state
);
10045 remote_g_packet_data_handle
=
10046 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
10048 /* Initialize the per-target state. At the moment there is only one
10049 of these, not one per target. Only one target is active at a
10050 time. The default buffer size is unimportant; it will be expanded
10051 whenever a larger buffer is needed. */
10052 rs
= get_remote_state_raw ();
10053 rs
->buf_size
= 400;
10054 rs
->buf
= xmalloc (rs
->buf_size
);
10056 init_remote_ops ();
10057 add_target (&remote_ops
);
10059 init_extended_remote_ops ();
10060 add_target (&extended_remote_ops
);
10062 /* Hook into new objfile notification. */
10063 observer_attach_new_objfile (remote_new_objfile
);
10065 /* Set up signal handlers. */
10066 sigint_remote_token
=
10067 create_async_signal_handler (async_remote_interrupt
, NULL
);
10068 sigint_remote_twice_token
=
10069 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
10072 init_remote_threadtests ();
10075 /* set/show remote ... */
10077 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
10078 Remote protocol specific variables\n\
10079 Configure various remote-protocol specific variables such as\n\
10080 the packets being used"),
10081 &remote_set_cmdlist
, "set remote ",
10082 0 /* allow-unknown */, &setlist
);
10083 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
10084 Remote protocol specific variables\n\
10085 Configure various remote-protocol specific variables such as\n\
10086 the packets being used"),
10087 &remote_show_cmdlist
, "show remote ",
10088 0 /* allow-unknown */, &showlist
);
10090 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
10091 Compare section data on target to the exec file.\n\
10092 Argument is a single section name (default: all loaded sections)."),
10095 add_cmd ("packet", class_maintenance
, packet_command
, _("\
10096 Send an arbitrary packet to a remote target.\n\
10097 maintenance packet TEXT\n\
10098 If GDB is talking to an inferior via the GDB serial protocol, then\n\
10099 this command sends the string TEXT to the inferior, and displays the\n\
10100 response packet. GDB supplies the initial `$' character, and the\n\
10101 terminating `#' character and checksum."),
10104 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
10105 Set whether to send break if interrupted."), _("\
10106 Show whether to send break if interrupted."), _("\
10107 If set, a break, instead of a cntrl-c, is sent to the remote target."),
10108 set_remotebreak
, show_remotebreak
,
10109 &setlist
, &showlist
);
10110 cmd_name
= "remotebreak";
10111 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
10112 deprecate_cmd (cmd
, "set remote interrupt-sequence");
10113 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
10114 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
10115 deprecate_cmd (cmd
, "show remote interrupt-sequence");
10117 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
10118 interrupt_sequence_modes
, &interrupt_sequence_mode
, _("\
10119 Set interrupt sequence to remote target."), _("\
10120 Show interrupt sequence to remote target."), _("\
10121 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10122 NULL
, show_interrupt_sequence
,
10123 &remote_set_cmdlist
,
10124 &remote_show_cmdlist
);
10126 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10127 &interrupt_on_connect
, _("\
10128 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10129 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10130 If set, interrupt sequence is sent to remote target."),
10132 &remote_set_cmdlist
, &remote_show_cmdlist
);
10134 /* Install commands for configuring memory read/write packets. */
10136 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10137 Set the maximum number of bytes per memory write packet (deprecated)."),
10139 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10140 Show the maximum number of bytes per memory write packet (deprecated)."),
10142 add_cmd ("memory-write-packet-size", no_class
,
10143 set_memory_write_packet_size
, _("\
10144 Set the maximum number of bytes per memory-write packet.\n\
10145 Specify the number of bytes in a packet or 0 (zero) for the\n\
10146 default packet size. The actual limit is further reduced\n\
10147 dependent on the target. Specify ``fixed'' to disable the\n\
10148 further restriction and ``limit'' to enable that restriction."),
10149 &remote_set_cmdlist
);
10150 add_cmd ("memory-read-packet-size", no_class
,
10151 set_memory_read_packet_size
, _("\
10152 Set the maximum number of bytes per memory-read packet.\n\
10153 Specify the number of bytes in a packet or 0 (zero) for the\n\
10154 default packet size. The actual limit is further reduced\n\
10155 dependent on the target. Specify ``fixed'' to disable the\n\
10156 further restriction and ``limit'' to enable that restriction."),
10157 &remote_set_cmdlist
);
10158 add_cmd ("memory-write-packet-size", no_class
,
10159 show_memory_write_packet_size
,
10160 _("Show the maximum number of bytes per memory-write packet."),
10161 &remote_show_cmdlist
);
10162 add_cmd ("memory-read-packet-size", no_class
,
10163 show_memory_read_packet_size
,
10164 _("Show the maximum number of bytes per memory-read packet."),
10165 &remote_show_cmdlist
);
10167 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10168 &remote_hw_watchpoint_limit
, _("\
10169 Set the maximum number of target hardware watchpoints."), _("\
10170 Show the maximum number of target hardware watchpoints."), _("\
10171 Specify a negative limit for unlimited."),
10172 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
10173 &remote_set_cmdlist
, &remote_show_cmdlist
);
10174 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10175 &remote_hw_breakpoint_limit
, _("\
10176 Set the maximum number of target hardware breakpoints."), _("\
10177 Show the maximum number of target hardware breakpoints."), _("\
10178 Specify a negative limit for unlimited."),
10179 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
10180 &remote_set_cmdlist
, &remote_show_cmdlist
);
10182 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
10183 &remote_address_size
, _("\
10184 Set the maximum size of the address (in bits) in a memory packet."), _("\
10185 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
10187 NULL
, /* FIXME: i18n: */
10188 &setlist
, &showlist
);
10190 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
10191 "X", "binary-download", 1);
10193 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
10194 "vCont", "verbose-resume", 0);
10196 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
10197 "QPassSignals", "pass-signals", 0);
10199 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
10200 "qSymbol", "symbol-lookup", 0);
10202 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
10203 "P", "set-register", 1);
10205 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
10206 "p", "fetch-register", 1);
10208 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
10209 "Z0", "software-breakpoint", 0);
10211 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
10212 "Z1", "hardware-breakpoint", 0);
10214 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
10215 "Z2", "write-watchpoint", 0);
10217 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
10218 "Z3", "read-watchpoint", 0);
10220 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
10221 "Z4", "access-watchpoint", 0);
10223 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
10224 "qXfer:auxv:read", "read-aux-vector", 0);
10226 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
10227 "qXfer:features:read", "target-features", 0);
10229 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
10230 "qXfer:libraries:read", "library-info", 0);
10232 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
10233 "qXfer:memory-map:read", "memory-map", 0);
10235 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
10236 "qXfer:spu:read", "read-spu-object", 0);
10238 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
10239 "qXfer:spu:write", "write-spu-object", 0);
10241 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
10242 "qXfer:osdata:read", "osdata", 0);
10244 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
10245 "qXfer:threads:read", "threads", 0);
10247 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
10248 "qXfer:siginfo:read", "read-siginfo-object", 0);
10250 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
10251 "qXfer:siginfo:write", "write-siginfo-object", 0);
10253 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
10254 "qGetTLSAddr", "get-thread-local-storage-address",
10257 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
10258 "bc", "reverse-continue", 0);
10260 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
10261 "bs", "reverse-step", 0);
10263 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
10264 "qSupported", "supported-packets", 0);
10266 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
10267 "qSearch:memory", "search-memory", 0);
10269 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
10270 "vFile:open", "hostio-open", 0);
10272 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
10273 "vFile:pread", "hostio-pread", 0);
10275 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
10276 "vFile:pwrite", "hostio-pwrite", 0);
10278 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
10279 "vFile:close", "hostio-close", 0);
10281 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
10282 "vFile:unlink", "hostio-unlink", 0);
10284 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
10285 "vAttach", "attach", 0);
10287 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
10290 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
10291 "QStartNoAckMode", "noack", 0);
10293 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
10294 "vKill", "kill", 0);
10296 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
10297 "qAttached", "query-attached", 0);
10299 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
10300 "ConditionalTracepoints", "conditional-tracepoints", 0);
10301 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10302 "FastTracepoints", "fast-tracepoints", 0);
10304 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
10305 "TracepointSource", "TracepointSource", 0);
10307 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10308 Z sub-packet has its own set and show commands, but users may
10309 have sets to this variable in their .gdbinit files (or in their
10311 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10312 &remote_Z_packet_detect
, _("\
10313 Set use of remote protocol `Z' packets"), _("\
10314 Show use of remote protocol `Z' packets "), _("\
10315 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10317 set_remote_protocol_Z_packet_cmd
,
10318 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
10319 &remote_set_cmdlist
, &remote_show_cmdlist
);
10321 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10322 Manipulate files on the remote system\n\
10323 Transfer files to and from the remote target system."),
10324 &remote_cmdlist
, "remote ",
10325 0 /* allow-unknown */, &cmdlist
);
10327 add_cmd ("put", class_files
, remote_put_command
,
10328 _("Copy a local file to the remote system."),
10331 add_cmd ("get", class_files
, remote_get_command
,
10332 _("Copy a remote file to the local system."),
10335 add_cmd ("delete", class_files
, remote_delete_command
,
10336 _("Delete a remote file."),
10339 remote_exec_file
= xstrdup ("");
10340 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10341 &remote_exec_file
, _("\
10342 Set the remote pathname for \"run\""), _("\
10343 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10344 &remote_set_cmdlist
, &remote_show_cmdlist
);
10346 /* Eventually initialize fileio. See fileio.c */
10347 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10349 /* Take advantage of the fact that the LWP field is not used, to tag
10350 special ptids with it set to != 0. */
10351 magic_null_ptid
= ptid_build (42000, 1, -1);
10352 not_sent_ptid
= ptid_build (42000, 1, -2);
10353 any_thread_ptid
= ptid_build (42000, 1, 0);
10355 target_buf_size
= 2048;
10356 target_buf
= xmalloc (target_buf_size
);