1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
39 #include "gdb_assert.h"
42 #include "cli/cli-decode.h"
43 #include "cli/cli-setshow.h"
44 #include "target-descriptions.h"
50 #include "event-loop.h"
51 #include "event-top.h"
57 #include "gdbcore.h" /* for exec_bfd */
59 #include "remote-fileio.h"
60 #include "gdb/fileio.h"
62 #include "xml-support.h"
64 #include "memory-map.h"
66 #include "tracepoint.h"
71 /* Temp hacks for tracepoint encoding migration. */
72 static char *target_buf
;
73 static long target_buf_size
;
75 /* The size to align memory write packets, when practical. The protocol
76 does not guarantee any alignment, and gdb will generate short
77 writes and unaligned writes, but even as a best-effort attempt this
78 can improve bulk transfers. For instance, if a write is misaligned
79 relative to the target's data bus, the stub may need to make an extra
80 round trip fetching data from the target. This doesn't make a
81 huge difference, but it's easy to do, so we try to be helpful.
83 The alignment chosen is arbitrary; usually data bus width is
84 important here, not the possibly larger cache line size. */
85 enum { REMOTE_ALIGN_WRITES
= 16 };
87 /* Prototypes for local functions. */
88 static void cleanup_sigint_signal_handler (void *dummy
);
89 static void initialize_sigint_signal_handler (void);
90 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
91 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
92 int forever
, int *is_notif
);
94 static void handle_remote_sigint (int);
95 static void handle_remote_sigint_twice (int);
96 static void async_remote_interrupt (gdb_client_data
);
97 void async_remote_interrupt_twice (gdb_client_data
);
99 static void remote_files_info (struct target_ops
*ignore
);
101 static void remote_prepare_to_store (struct regcache
*regcache
);
103 static void remote_open (char *name
, int from_tty
);
105 static void extended_remote_open (char *name
, int from_tty
);
107 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
109 static void remote_close (int quitting
);
111 static void remote_mourn (struct target_ops
*ops
);
113 static void extended_remote_restart (void);
115 static void extended_remote_mourn (struct target_ops
*);
117 static void remote_mourn_1 (struct target_ops
*);
119 static void remote_send (char **buf
, long *sizeof_buf_p
);
121 static int readchar (int timeout
);
123 static void remote_kill (struct target_ops
*ops
);
125 static int tohex (int nib
);
127 static int remote_can_async_p (void);
129 static int remote_is_async_p (void);
131 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
132 void *context
), void *context
);
134 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
136 static void remote_interrupt (int signo
);
138 static void remote_interrupt_twice (int signo
);
140 static void interrupt_query (void);
142 static void set_general_thread (struct ptid ptid
);
143 static void set_continue_thread (struct ptid ptid
);
145 static void get_offsets (void);
147 static void skip_frame (void);
149 static long read_frame (char **buf_p
, long *sizeof_buf
);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void remote_stop (ptid_t
);
159 static int ishex (int ch
, int *val
);
161 static int stubhex (int ch
);
163 static int hexnumstr (char *, ULONGEST
);
165 static int hexnumnstr (char *, ULONGEST
, int);
167 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
169 static void print_packet (char *);
171 static void compare_sections_command (char *, int);
173 static void packet_command (char *, int);
175 static int stub_unpack_int (char *buff
, int fieldlength
);
177 static ptid_t
remote_current_thread (ptid_t oldptid
);
179 static void remote_find_new_threads (void);
181 static void record_currthread (ptid_t currthread
);
183 static int fromhex (int a
);
185 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
187 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
189 static int putpkt_binary (char *buf
, int cnt
);
191 static void check_binary_download (CORE_ADDR addr
);
193 struct packet_config
;
195 static void show_packet_config_cmd (struct packet_config
*config
);
197 static void update_packet_config (struct packet_config
*config
);
199 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
200 struct cmd_list_element
*c
);
202 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
204 struct cmd_list_element
*c
,
207 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
208 static ptid_t
read_ptid (char *buf
, char **obuf
);
210 static void remote_set_permissions (void);
213 static int remote_get_trace_status (struct trace_status
*ts
);
215 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
217 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
219 static void remote_query_supported (void);
221 static void remote_check_symbols (struct objfile
*objfile
);
223 void _initialize_remote (void);
226 static struct stop_reply
*stop_reply_xmalloc (void);
227 static void stop_reply_xfree (struct stop_reply
*);
228 static void do_stop_reply_xfree (void *arg
);
229 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
230 static void push_stop_reply (struct stop_reply
*);
231 static void remote_get_pending_stop_replies (void);
232 static void discard_pending_stop_replies (struct inferior
*);
233 static int peek_stop_reply (ptid_t ptid
);
235 static void remote_async_inferior_event_handler (gdb_client_data
);
236 static void remote_async_get_pending_events_handler (gdb_client_data
);
238 static void remote_terminal_ours (void);
240 static int remote_read_description_p (struct target_ops
*target
);
242 static void remote_console_output (char *msg
);
244 static int remote_supports_cond_breakpoints (void);
246 static int remote_can_run_breakpoint_commands (void);
248 /* The non-stop remote protocol provisions for one pending stop reply.
249 This is where we keep it until it is acknowledged. */
251 static struct stop_reply
*pending_stop_reply
= NULL
;
255 static struct cmd_list_element
*remote_cmdlist
;
257 /* For "set remote" and "show remote". */
259 static struct cmd_list_element
*remote_set_cmdlist
;
260 static struct cmd_list_element
*remote_show_cmdlist
;
262 /* Description of the remote protocol state for the currently
263 connected target. This is per-target state, and independent of the
264 selected architecture. */
268 /* A buffer to use for incoming packets, and its current size. The
269 buffer is grown dynamically for larger incoming packets.
270 Outgoing packets may also be constructed in this buffer.
271 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
272 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
277 /* True if we're going through initial connection setup (finding out
278 about the remote side's threads, relocating symbols, etc.). */
281 /* If we negotiated packet size explicitly (and thus can bypass
282 heuristics for the largest packet size that will not overflow
283 a buffer in the stub), this will be set to that packet size.
284 Otherwise zero, meaning to use the guessed size. */
285 long explicit_packet_size
;
287 /* remote_wait is normally called when the target is running and
288 waits for a stop reply packet. But sometimes we need to call it
289 when the target is already stopped. We can send a "?" packet
290 and have remote_wait read the response. Or, if we already have
291 the response, we can stash it in BUF and tell remote_wait to
292 skip calling getpkt. This flag is set when BUF contains a
293 stop reply packet and the target is not waiting. */
294 int cached_wait_status
;
296 /* True, if in no ack mode. That is, neither GDB nor the stub will
297 expect acks from each other. The connection is assumed to be
301 /* True if we're connected in extended remote mode. */
304 /* True if the stub reported support for multi-process
306 int multi_process_aware
;
308 /* True if we resumed the target and we're waiting for the target to
309 stop. In the mean time, we can't start another command/query.
310 The remote server wouldn't be ready to process it, so we'd
311 timeout waiting for a reply that would never come and eventually
312 we'd close the connection. This can happen in asynchronous mode
313 because we allow GDB commands while the target is running. */
314 int waiting_for_stop_reply
;
316 /* True if the stub reports support for non-stop mode. */
319 /* True if the stub reports support for vCont;t. */
322 /* True if the stub reports support for conditional tracepoints. */
323 int cond_tracepoints
;
325 /* True if the stub reports support for target-side breakpoint
327 int cond_breakpoints
;
329 /* True if the stub reports support for target-side breakpoint
331 int breakpoint_commands
;
333 /* True if the stub reports support for fast tracepoints. */
334 int fast_tracepoints
;
336 /* True if the stub reports support for static tracepoints. */
337 int static_tracepoints
;
339 /* True if the stub reports support for installing tracepoint while
341 int install_in_trace
;
343 /* True if the stub can continue running a trace while GDB is
345 int disconnected_tracing
;
347 /* True if the stub reports support for enabling and disabling
348 tracepoints while a trace experiment is running. */
349 int enable_disable_tracepoints
;
351 /* True if the stub can collect strings using tracenz bytecode. */
354 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
355 responded to that. */
359 /* Private data that we'll store in (struct thread_info)->private. */
360 struct private_thread_info
367 free_private_thread_info (struct private_thread_info
*info
)
373 /* Returns true if the multi-process extensions are in effect. */
375 remote_multi_process_p (struct remote_state
*rs
)
377 return rs
->multi_process_aware
;
380 /* This data could be associated with a target, but we do not always
381 have access to the current target when we need it, so for now it is
382 static. This will be fine for as long as only one target is in use
384 static struct remote_state remote_state
;
386 static struct remote_state
*
387 get_remote_state_raw (void)
389 return &remote_state
;
392 /* Description of the remote protocol for a given architecture. */
396 long offset
; /* Offset into G packet. */
397 long regnum
; /* GDB's internal register number. */
398 LONGEST pnum
; /* Remote protocol register number. */
399 int in_g_packet
; /* Always part of G packet. */
400 /* long size in bytes; == register_size (target_gdbarch (), regnum);
402 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
406 struct remote_arch_state
408 /* Description of the remote protocol registers. */
409 long sizeof_g_packet
;
411 /* Description of the remote protocol registers indexed by REGNUM
412 (making an array gdbarch_num_regs in size). */
413 struct packet_reg
*regs
;
415 /* This is the size (in chars) of the first response to the ``g''
416 packet. It is used as a heuristic when determining the maximum
417 size of memory-read and memory-write packets. A target will
418 typically only reserve a buffer large enough to hold the ``g''
419 packet. The size does not include packet overhead (headers and
421 long actual_register_packet_size
;
423 /* This is the maximum size (in chars) of a non read/write packet.
424 It is also used as a cap on the size of read/write packets. */
425 long remote_packet_size
;
428 long sizeof_pkt
= 2000;
430 /* Utility: generate error from an incoming stub packet. */
432 trace_error (char *buf
)
435 return; /* not an error msg */
438 case '1': /* malformed packet error */
439 if (*++buf
== '0') /* general case: */
440 error (_("remote.c: error in outgoing packet."));
442 error (_("remote.c: error in outgoing packet at field #%ld."),
443 strtol (buf
, NULL
, 16));
445 error (_("trace API error 0x%s."), ++buf
);
447 error (_("Target returns error code '%s'."), buf
);
451 /* Utility: wait for reply from stub, while accepting "O" packets. */
453 remote_get_noisy_reply (char **buf_p
,
456 do /* Loop on reply from remote stub. */
460 QUIT
; /* Allow user to bail out with ^C. */
461 getpkt (buf_p
, sizeof_buf
, 0);
465 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
468 CORE_ADDR from
, to
, org_to
;
470 int adjusted_size
= 0;
471 volatile struct gdb_exception ex
;
473 p
= buf
+ strlen ("qRelocInsn:");
474 pp
= unpack_varlen_hex (p
, &ul
);
476 error (_("invalid qRelocInsn packet: %s"), buf
);
480 unpack_varlen_hex (p
, &ul
);
485 TRY_CATCH (ex
, RETURN_MASK_ALL
)
487 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
491 adjusted_size
= to
- org_to
;
493 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
496 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
498 /* Propagate memory errors silently back to the target.
499 The stub may have limited the range of addresses we
500 can write to, for example. */
505 /* Something unexpectedly bad happened. Be verbose so
506 we can tell what, and propagate the error back to the
507 stub, so it doesn't get stuck waiting for a
509 exception_fprintf (gdb_stderr
, ex
,
510 _("warning: relocating instruction: "));
514 else if (buf
[0] == 'O' && buf
[1] != 'K')
515 remote_console_output (buf
+ 1); /* 'O' message from stub */
517 return buf
; /* Here's the actual reply. */
522 /* Handle for retreving the remote protocol data from gdbarch. */
523 static struct gdbarch_data
*remote_gdbarch_data_handle
;
525 static struct remote_arch_state
*
526 get_remote_arch_state (void)
528 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
531 /* Fetch the global remote target state. */
533 static struct remote_state
*
534 get_remote_state (void)
536 /* Make sure that the remote architecture state has been
537 initialized, because doing so might reallocate rs->buf. Any
538 function which calls getpkt also needs to be mindful of changes
539 to rs->buf, but this call limits the number of places which run
541 get_remote_arch_state ();
543 return get_remote_state_raw ();
547 compare_pnums (const void *lhs_
, const void *rhs_
)
549 const struct packet_reg
* const *lhs
= lhs_
;
550 const struct packet_reg
* const *rhs
= rhs_
;
552 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
554 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
561 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
563 int regnum
, num_remote_regs
, offset
;
564 struct packet_reg
**remote_regs
;
566 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
568 struct packet_reg
*r
= ®s
[regnum
];
570 if (register_size (gdbarch
, regnum
) == 0)
571 /* Do not try to fetch zero-sized (placeholder) registers. */
574 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
579 /* Define the g/G packet format as the contents of each register
580 with a remote protocol number, in order of ascending protocol
583 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
584 * sizeof (struct packet_reg
*));
585 for (num_remote_regs
= 0, regnum
= 0;
586 regnum
< gdbarch_num_regs (gdbarch
);
588 if (regs
[regnum
].pnum
!= -1)
589 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
591 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
594 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
596 remote_regs
[regnum
]->in_g_packet
= 1;
597 remote_regs
[regnum
]->offset
= offset
;
598 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
604 /* Given the architecture described by GDBARCH, return the remote
605 protocol register's number and the register's offset in the g/G
606 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
607 If the target does not have a mapping for REGNUM, return false,
608 otherwise, return true. */
611 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
612 int *pnum
, int *poffset
)
615 struct packet_reg
*regs
;
616 struct cleanup
*old_chain
;
618 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
620 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
621 old_chain
= make_cleanup (xfree
, regs
);
623 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
625 *pnum
= regs
[regnum
].pnum
;
626 *poffset
= regs
[regnum
].offset
;
628 do_cleanups (old_chain
);
634 init_remote_state (struct gdbarch
*gdbarch
)
636 struct remote_state
*rs
= get_remote_state_raw ();
637 struct remote_arch_state
*rsa
;
639 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
641 /* Use the architecture to build a regnum<->pnum table, which will be
642 1:1 unless a feature set specifies otherwise. */
643 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
644 gdbarch_num_regs (gdbarch
),
647 /* Record the maximum possible size of the g packet - it may turn out
649 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
651 /* Default maximum number of characters in a packet body. Many
652 remote stubs have a hardwired buffer size of 400 bytes
653 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
654 as the maximum packet-size to ensure that the packet and an extra
655 NUL character can always fit in the buffer. This stops GDB
656 trashing stubs that try to squeeze an extra NUL into what is
657 already a full buffer (As of 1999-12-04 that was most stubs). */
658 rsa
->remote_packet_size
= 400 - 1;
660 /* This one is filled in when a ``g'' packet is received. */
661 rsa
->actual_register_packet_size
= 0;
663 /* Should rsa->sizeof_g_packet needs more space than the
664 default, adjust the size accordingly. Remember that each byte is
665 encoded as two characters. 32 is the overhead for the packet
666 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
667 (``$NN:G...#NN'') is a better guess, the below has been padded a
669 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
670 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
672 /* Make sure that the packet buffer is plenty big enough for
673 this architecture. */
674 if (rs
->buf_size
< rsa
->remote_packet_size
)
676 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
677 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
683 /* Return the current allowed size of a remote packet. This is
684 inferred from the current architecture, and should be used to
685 limit the length of outgoing packets. */
687 get_remote_packet_size (void)
689 struct remote_state
*rs
= get_remote_state ();
690 struct remote_arch_state
*rsa
= get_remote_arch_state ();
692 if (rs
->explicit_packet_size
)
693 return rs
->explicit_packet_size
;
695 return rsa
->remote_packet_size
;
698 static struct packet_reg
*
699 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
701 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
705 struct packet_reg
*r
= &rsa
->regs
[regnum
];
707 gdb_assert (r
->regnum
== regnum
);
712 static struct packet_reg
*
713 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
717 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
719 struct packet_reg
*r
= &rsa
->regs
[i
];
727 /* FIXME: graces/2002-08-08: These variables should eventually be
728 bound to an instance of the target object (as in gdbarch-tdep()),
729 when such a thing exists. */
731 /* This is set to the data address of the access causing the target
732 to stop for a watchpoint. */
733 static CORE_ADDR remote_watch_data_address
;
735 /* This is non-zero if target stopped for a watchpoint. */
736 static int remote_stopped_by_watchpoint_p
;
738 static struct target_ops remote_ops
;
740 static struct target_ops extended_remote_ops
;
742 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
743 ``forever'' still use the normal timeout mechanism. This is
744 currently used by the ASYNC code to guarentee that target reads
745 during the initial connect always time-out. Once getpkt has been
746 modified to return a timeout indication and, in turn
747 remote_wait()/wait_for_inferior() have gained a timeout parameter
749 static int wait_forever_enabled_p
= 1;
751 /* Allow the user to specify what sequence to send to the remote
752 when he requests a program interruption: Although ^C is usually
753 what remote systems expect (this is the default, here), it is
754 sometimes preferable to send a break. On other systems such
755 as the Linux kernel, a break followed by g, which is Magic SysRq g
756 is required in order to interrupt the execution. */
757 const char interrupt_sequence_control_c
[] = "Ctrl-C";
758 const char interrupt_sequence_break
[] = "BREAK";
759 const char interrupt_sequence_break_g
[] = "BREAK-g";
760 static const char *const interrupt_sequence_modes
[] =
762 interrupt_sequence_control_c
,
763 interrupt_sequence_break
,
764 interrupt_sequence_break_g
,
767 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
770 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
771 struct cmd_list_element
*c
,
774 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
775 fprintf_filtered (file
,
776 _("Send the ASCII ETX character (Ctrl-c) "
777 "to the remote target to interrupt the "
778 "execution of the program.\n"));
779 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
780 fprintf_filtered (file
,
781 _("send a break signal to the remote target "
782 "to interrupt the execution of the program.\n"));
783 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
784 fprintf_filtered (file
,
785 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
786 "the remote target to interrupt the execution "
787 "of Linux kernel.\n"));
789 internal_error (__FILE__
, __LINE__
,
790 _("Invalid value for interrupt_sequence_mode: %s."),
791 interrupt_sequence_mode
);
794 /* This boolean variable specifies whether interrupt_sequence is sent
795 to the remote target when gdb connects to it.
796 This is mostly needed when you debug the Linux kernel: The Linux kernel
797 expects BREAK g which is Magic SysRq g for connecting gdb. */
798 static int interrupt_on_connect
= 0;
800 /* This variable is used to implement the "set/show remotebreak" commands.
801 Since these commands are now deprecated in favor of "set/show remote
802 interrupt-sequence", it no longer has any effect on the code. */
803 static int remote_break
;
806 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
809 interrupt_sequence_mode
= interrupt_sequence_break
;
811 interrupt_sequence_mode
= interrupt_sequence_control_c
;
815 show_remotebreak (struct ui_file
*file
, int from_tty
,
816 struct cmd_list_element
*c
,
821 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
822 remote_open knows that we don't have a file open when the program
824 static struct serial
*remote_desc
= NULL
;
826 /* This variable sets the number of bits in an address that are to be
827 sent in a memory ("M" or "m") packet. Normally, after stripping
828 leading zeros, the entire address would be sent. This variable
829 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
830 initial implementation of remote.c restricted the address sent in
831 memory packets to ``host::sizeof long'' bytes - (typically 32
832 bits). Consequently, for 64 bit targets, the upper 32 bits of an
833 address was never sent. Since fixing this bug may cause a break in
834 some remote targets this variable is principly provided to
835 facilitate backward compatibility. */
837 static unsigned int remote_address_size
;
839 /* Temporary to track who currently owns the terminal. See
840 remote_terminal_* for more details. */
842 static int remote_async_terminal_ours_p
;
844 /* The executable file to use for "run" on the remote side. */
846 static char *remote_exec_file
= "";
849 /* User configurable variables for the number of characters in a
850 memory read/write packet. MIN (rsa->remote_packet_size,
851 rsa->sizeof_g_packet) is the default. Some targets need smaller
852 values (fifo overruns, et.al.) and some users need larger values
853 (speed up transfers). The variables ``preferred_*'' (the user
854 request), ``current_*'' (what was actually set) and ``forced_*''
855 (Positive - a soft limit, negative - a hard limit). */
857 struct memory_packet_config
864 /* Compute the current size of a read/write packet. Since this makes
865 use of ``actual_register_packet_size'' the computation is dynamic. */
868 get_memory_packet_size (struct memory_packet_config
*config
)
870 struct remote_state
*rs
= get_remote_state ();
871 struct remote_arch_state
*rsa
= get_remote_arch_state ();
873 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
874 law?) that some hosts don't cope very well with large alloca()
875 calls. Eventually the alloca() code will be replaced by calls to
876 xmalloc() and make_cleanups() allowing this restriction to either
877 be lifted or removed. */
878 #ifndef MAX_REMOTE_PACKET_SIZE
879 #define MAX_REMOTE_PACKET_SIZE 16384
881 /* NOTE: 20 ensures we can write at least one byte. */
882 #ifndef MIN_REMOTE_PACKET_SIZE
883 #define MIN_REMOTE_PACKET_SIZE 20
888 if (config
->size
<= 0)
889 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
891 what_they_get
= config
->size
;
895 what_they_get
= get_remote_packet_size ();
896 /* Limit the packet to the size specified by the user. */
898 && what_they_get
> config
->size
)
899 what_they_get
= config
->size
;
901 /* Limit it to the size of the targets ``g'' response unless we have
902 permission from the stub to use a larger packet size. */
903 if (rs
->explicit_packet_size
== 0
904 && rsa
->actual_register_packet_size
> 0
905 && what_they_get
> rsa
->actual_register_packet_size
)
906 what_they_get
= rsa
->actual_register_packet_size
;
908 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
909 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
910 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
911 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
913 /* Make sure there is room in the global buffer for this packet
914 (including its trailing NUL byte). */
915 if (rs
->buf_size
< what_they_get
+ 1)
917 rs
->buf_size
= 2 * what_they_get
;
918 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
921 return what_they_get
;
924 /* Update the size of a read/write packet. If they user wants
925 something really big then do a sanity check. */
928 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
930 int fixed_p
= config
->fixed_p
;
931 long size
= config
->size
;
934 error (_("Argument required (integer, `fixed' or `limited')."));
935 else if (strcmp (args
, "hard") == 0
936 || strcmp (args
, "fixed") == 0)
938 else if (strcmp (args
, "soft") == 0
939 || strcmp (args
, "limit") == 0)
945 size
= strtoul (args
, &end
, 0);
947 error (_("Invalid %s (bad syntax)."), config
->name
);
949 /* Instead of explicitly capping the size of a packet to
950 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
951 instead allowed to set the size to something arbitrarily
953 if (size
> MAX_REMOTE_PACKET_SIZE
)
954 error (_("Invalid %s (too large)."), config
->name
);
958 if (fixed_p
&& !config
->fixed_p
)
960 if (! query (_("The target may not be able to correctly handle a %s\n"
961 "of %ld bytes. Change the packet size? "),
963 error (_("Packet size not changed."));
965 /* Update the config. */
966 config
->fixed_p
= fixed_p
;
971 show_memory_packet_size (struct memory_packet_config
*config
)
973 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
975 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
976 get_memory_packet_size (config
));
978 printf_filtered (_("Packets are limited to %ld bytes.\n"),
979 get_memory_packet_size (config
));
982 static struct memory_packet_config memory_write_packet_config
=
984 "memory-write-packet-size",
988 set_memory_write_packet_size (char *args
, int from_tty
)
990 set_memory_packet_size (args
, &memory_write_packet_config
);
994 show_memory_write_packet_size (char *args
, int from_tty
)
996 show_memory_packet_size (&memory_write_packet_config
);
1000 get_memory_write_packet_size (void)
1002 return get_memory_packet_size (&memory_write_packet_config
);
1005 static struct memory_packet_config memory_read_packet_config
=
1007 "memory-read-packet-size",
1011 set_memory_read_packet_size (char *args
, int from_tty
)
1013 set_memory_packet_size (args
, &memory_read_packet_config
);
1017 show_memory_read_packet_size (char *args
, int from_tty
)
1019 show_memory_packet_size (&memory_read_packet_config
);
1023 get_memory_read_packet_size (void)
1025 long size
= get_memory_packet_size (&memory_read_packet_config
);
1027 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1028 extra buffer size argument before the memory read size can be
1029 increased beyond this. */
1030 if (size
> get_remote_packet_size ())
1031 size
= get_remote_packet_size ();
1036 /* Generic configuration support for packets the stub optionally
1037 supports. Allows the user to specify the use of the packet as well
1038 as allowing GDB to auto-detect support in the remote stub. */
1042 PACKET_SUPPORT_UNKNOWN
= 0,
1047 struct packet_config
1051 enum auto_boolean detect
;
1052 enum packet_support support
;
1055 /* Analyze a packet's return value and update the packet config
1066 update_packet_config (struct packet_config
*config
)
1068 switch (config
->detect
)
1070 case AUTO_BOOLEAN_TRUE
:
1071 config
->support
= PACKET_ENABLE
;
1073 case AUTO_BOOLEAN_FALSE
:
1074 config
->support
= PACKET_DISABLE
;
1076 case AUTO_BOOLEAN_AUTO
:
1077 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1083 show_packet_config_cmd (struct packet_config
*config
)
1085 char *support
= "internal-error";
1087 switch (config
->support
)
1090 support
= "enabled";
1092 case PACKET_DISABLE
:
1093 support
= "disabled";
1095 case PACKET_SUPPORT_UNKNOWN
:
1096 support
= "unknown";
1099 switch (config
->detect
)
1101 case AUTO_BOOLEAN_AUTO
:
1102 printf_filtered (_("Support for the `%s' packet "
1103 "is auto-detected, currently %s.\n"),
1104 config
->name
, support
);
1106 case AUTO_BOOLEAN_TRUE
:
1107 case AUTO_BOOLEAN_FALSE
:
1108 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1109 config
->name
, support
);
1115 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1116 const char *title
, int legacy
)
1122 config
->name
= name
;
1123 config
->title
= title
;
1124 config
->detect
= AUTO_BOOLEAN_AUTO
;
1125 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1126 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1128 show_doc
= xstrprintf ("Show current use of remote "
1129 "protocol `%s' (%s) packet",
1131 /* set/show TITLE-packet {auto,on,off} */
1132 cmd_name
= xstrprintf ("%s-packet", title
);
1133 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1134 &config
->detect
, set_doc
,
1135 show_doc
, NULL
, /* help_doc */
1136 set_remote_protocol_packet_cmd
,
1137 show_remote_protocol_packet_cmd
,
1138 &remote_set_cmdlist
, &remote_show_cmdlist
);
1139 /* The command code copies the documentation strings. */
1142 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1147 legacy_name
= xstrprintf ("%s-packet", name
);
1148 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1149 &remote_set_cmdlist
);
1150 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1151 &remote_show_cmdlist
);
1155 static enum packet_result
1156 packet_check_result (const char *buf
)
1160 /* The stub recognized the packet request. Check that the
1161 operation succeeded. */
1163 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1165 /* "Enn" - definitly an error. */
1166 return PACKET_ERROR
;
1168 /* Always treat "E." as an error. This will be used for
1169 more verbose error messages, such as E.memtypes. */
1170 if (buf
[0] == 'E' && buf
[1] == '.')
1171 return PACKET_ERROR
;
1173 /* The packet may or may not be OK. Just assume it is. */
1177 /* The stub does not support the packet. */
1178 return PACKET_UNKNOWN
;
1181 static enum packet_result
1182 packet_ok (const char *buf
, struct packet_config
*config
)
1184 enum packet_result result
;
1186 result
= packet_check_result (buf
);
1191 /* The stub recognized the packet request. */
1192 switch (config
->support
)
1194 case PACKET_SUPPORT_UNKNOWN
:
1196 fprintf_unfiltered (gdb_stdlog
,
1197 "Packet %s (%s) is supported\n",
1198 config
->name
, config
->title
);
1199 config
->support
= PACKET_ENABLE
;
1201 case PACKET_DISABLE
:
1202 internal_error (__FILE__
, __LINE__
,
1203 _("packet_ok: attempt to use a disabled packet"));
1209 case PACKET_UNKNOWN
:
1210 /* The stub does not support the packet. */
1211 switch (config
->support
)
1214 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1215 /* If the stub previously indicated that the packet was
1216 supported then there is a protocol error.. */
1217 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1218 config
->name
, config
->title
);
1220 /* The user set it wrong. */
1221 error (_("Enabled packet %s (%s) not recognized by stub"),
1222 config
->name
, config
->title
);
1224 case PACKET_SUPPORT_UNKNOWN
:
1226 fprintf_unfiltered (gdb_stdlog
,
1227 "Packet %s (%s) is NOT supported\n",
1228 config
->name
, config
->title
);
1229 config
->support
= PACKET_DISABLE
;
1231 case PACKET_DISABLE
:
1253 PACKET_vFile_pwrite
,
1255 PACKET_vFile_unlink
,
1256 PACKET_vFile_readlink
,
1258 PACKET_qXfer_features
,
1259 PACKET_qXfer_libraries
,
1260 PACKET_qXfer_libraries_svr4
,
1261 PACKET_qXfer_memory_map
,
1262 PACKET_qXfer_spu_read
,
1263 PACKET_qXfer_spu_write
,
1264 PACKET_qXfer_osdata
,
1265 PACKET_qXfer_threads
,
1266 PACKET_qXfer_statictrace_read
,
1267 PACKET_qXfer_traceframe_info
,
1272 PACKET_QPassSignals
,
1273 PACKET_QProgramSignals
,
1274 PACKET_qSearch_memory
,
1277 PACKET_QStartNoAckMode
,
1279 PACKET_qXfer_siginfo_read
,
1280 PACKET_qXfer_siginfo_write
,
1282 PACKET_ConditionalTracepoints
,
1283 PACKET_ConditionalBreakpoints
,
1284 PACKET_BreakpointCommands
,
1285 PACKET_FastTracepoints
,
1286 PACKET_StaticTracepoints
,
1287 PACKET_InstallInTrace
,
1290 PACKET_TracepointSource
,
1293 PACKET_QDisableRandomization
,
1298 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1301 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1302 struct cmd_list_element
*c
)
1304 struct packet_config
*packet
;
1306 for (packet
= remote_protocol_packets
;
1307 packet
< &remote_protocol_packets
[PACKET_MAX
];
1310 if (&packet
->detect
== c
->var
)
1312 update_packet_config (packet
);
1316 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1321 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1322 struct cmd_list_element
*c
,
1325 struct packet_config
*packet
;
1327 for (packet
= remote_protocol_packets
;
1328 packet
< &remote_protocol_packets
[PACKET_MAX
];
1331 if (&packet
->detect
== c
->var
)
1333 show_packet_config_cmd (packet
);
1337 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1341 /* Should we try one of the 'Z' requests? */
1345 Z_PACKET_SOFTWARE_BP
,
1346 Z_PACKET_HARDWARE_BP
,
1353 /* For compatibility with older distributions. Provide a ``set remote
1354 Z-packet ...'' command that updates all the Z packet types. */
1356 static enum auto_boolean remote_Z_packet_detect
;
1359 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1360 struct cmd_list_element
*c
)
1364 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1366 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1367 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1372 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1373 struct cmd_list_element
*c
,
1378 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1380 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1384 /* Should we try the 'ThreadInfo' query packet?
1386 This variable (NOT available to the user: auto-detect only!)
1387 determines whether GDB will use the new, simpler "ThreadInfo"
1388 query or the older, more complex syntax for thread queries.
1389 This is an auto-detect variable (set to true at each connect,
1390 and set to false when the target fails to recognize it). */
1392 static int use_threadinfo_query
;
1393 static int use_threadextra_query
;
1395 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1396 static struct async_signal_handler
*sigint_remote_twice_token
;
1397 static struct async_signal_handler
*sigint_remote_token
;
1400 /* Asynchronous signal handle registered as event loop source for
1401 when we have pending events ready to be passed to the core. */
1403 static struct async_event_handler
*remote_async_inferior_event_token
;
1405 /* Asynchronous signal handle registered as event loop source for when
1406 the remote sent us a %Stop notification. The registered callback
1407 will do a vStopped sequence to pull the rest of the events out of
1408 the remote side into our event queue. */
1410 static struct async_event_handler
*remote_async_get_pending_events_token
;
1413 static ptid_t magic_null_ptid
;
1414 static ptid_t not_sent_ptid
;
1415 static ptid_t any_thread_ptid
;
1417 /* These are the threads which we last sent to the remote system. The
1418 TID member will be -1 for all or -2 for not sent yet. */
1420 static ptid_t general_thread
;
1421 static ptid_t continue_thread
;
1423 /* This is the traceframe which we last selected on the remote system.
1424 It will be -1 if no traceframe is selected. */
1425 static int remote_traceframe_number
= -1;
1427 /* Find out if the stub attached to PID (and hence GDB should offer to
1428 detach instead of killing it when bailing out). */
1431 remote_query_attached (int pid
)
1433 struct remote_state
*rs
= get_remote_state ();
1434 size_t size
= get_remote_packet_size ();
1436 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1439 if (remote_multi_process_p (rs
))
1440 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1442 xsnprintf (rs
->buf
, size
, "qAttached");
1445 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1447 switch (packet_ok (rs
->buf
,
1448 &remote_protocol_packets
[PACKET_qAttached
]))
1451 if (strcmp (rs
->buf
, "1") == 0)
1455 warning (_("Remote failure reply: %s"), rs
->buf
);
1457 case PACKET_UNKNOWN
:
1464 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1465 has been invented by GDB, instead of reported by the target. Since
1466 we can be connected to a remote system before before knowing about
1467 any inferior, mark the target with execution when we find the first
1468 inferior. If ATTACHED is 1, then we had just attached to this
1469 inferior. If it is 0, then we just created this inferior. If it
1470 is -1, then try querying the remote stub to find out if it had
1471 attached to the inferior or not. */
1473 static struct inferior
*
1474 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1476 struct inferior
*inf
;
1478 /* Check whether this process we're learning about is to be
1479 considered attached, or if is to be considered to have been
1480 spawned by the stub. */
1482 attached
= remote_query_attached (pid
);
1484 if (gdbarch_has_global_solist (target_gdbarch ()))
1486 /* If the target shares code across all inferiors, then every
1487 attach adds a new inferior. */
1488 inf
= add_inferior (pid
);
1490 /* ... and every inferior is bound to the same program space.
1491 However, each inferior may still have its own address
1493 inf
->aspace
= maybe_new_address_space ();
1494 inf
->pspace
= current_program_space
;
1498 /* In the traditional debugging scenario, there's a 1-1 match
1499 between program/address spaces. We simply bind the inferior
1500 to the program space's address space. */
1501 inf
= current_inferior ();
1502 inferior_appeared (inf
, pid
);
1505 inf
->attach_flag
= attached
;
1506 inf
->fake_pid_p
= fake_pid_p
;
1511 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1512 according to RUNNING. */
1515 remote_add_thread (ptid_t ptid
, int running
)
1519 set_executing (ptid
, running
);
1520 set_running (ptid
, running
);
1523 /* Come here when we learn about a thread id from the remote target.
1524 It may be the first time we hear about such thread, so take the
1525 opportunity to add it to GDB's thread list. In case this is the
1526 first time we're noticing its corresponding inferior, add it to
1527 GDB's inferior list as well. */
1530 remote_notice_new_inferior (ptid_t currthread
, int running
)
1532 /* If this is a new thread, add it to GDB's thread list.
1533 If we leave it up to WFI to do this, bad things will happen. */
1535 if (in_thread_list (currthread
) && is_exited (currthread
))
1537 /* We're seeing an event on a thread id we knew had exited.
1538 This has to be a new thread reusing the old id. Add it. */
1539 remote_add_thread (currthread
, running
);
1543 if (!in_thread_list (currthread
))
1545 struct inferior
*inf
= NULL
;
1546 int pid
= ptid_get_pid (currthread
);
1548 if (ptid_is_pid (inferior_ptid
)
1549 && pid
== ptid_get_pid (inferior_ptid
))
1551 /* inferior_ptid has no thread member yet. This can happen
1552 with the vAttach -> remote_wait,"TAAthread:" path if the
1553 stub doesn't support qC. This is the first stop reported
1554 after an attach, so this is the main thread. Update the
1555 ptid in the thread list. */
1556 if (in_thread_list (pid_to_ptid (pid
)))
1557 thread_change_ptid (inferior_ptid
, currthread
);
1560 remote_add_thread (currthread
, running
);
1561 inferior_ptid
= currthread
;
1566 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1568 /* inferior_ptid is not set yet. This can happen with the
1569 vRun -> remote_wait,"TAAthread:" path if the stub
1570 doesn't support qC. This is the first stop reported
1571 after an attach, so this is the main thread. Update the
1572 ptid in the thread list. */
1573 thread_change_ptid (inferior_ptid
, currthread
);
1577 /* When connecting to a target remote, or to a target
1578 extended-remote which already was debugging an inferior, we
1579 may not know about it yet. Add it before adding its child
1580 thread, so notifications are emitted in a sensible order. */
1581 if (!in_inferior_list (ptid_get_pid (currthread
)))
1583 struct remote_state
*rs
= get_remote_state ();
1584 int fake_pid_p
= !remote_multi_process_p (rs
);
1586 inf
= remote_add_inferior (fake_pid_p
,
1587 ptid_get_pid (currthread
), -1);
1590 /* This is really a new thread. Add it. */
1591 remote_add_thread (currthread
, running
);
1593 /* If we found a new inferior, let the common code do whatever
1594 it needs to with it (e.g., read shared libraries, insert
1597 notice_new_inferior (currthread
, running
, 0);
1601 /* Return the private thread data, creating it if necessary. */
1603 static struct private_thread_info
*
1604 demand_private_info (ptid_t ptid
)
1606 struct thread_info
*info
= find_thread_ptid (ptid
);
1612 info
->private = xmalloc (sizeof (*(info
->private)));
1613 info
->private_dtor
= free_private_thread_info
;
1614 info
->private->core
= -1;
1615 info
->private->extra
= 0;
1618 return info
->private;
1621 /* Call this function as a result of
1622 1) A halt indication (T packet) containing a thread id
1623 2) A direct query of currthread
1624 3) Successful execution of set thread */
1627 record_currthread (ptid_t currthread
)
1629 general_thread
= currthread
;
1632 static char *last_pass_packet
;
1634 /* If 'QPassSignals' is supported, tell the remote stub what signals
1635 it can simply pass through to the inferior without reporting. */
1638 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1640 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1642 char *pass_packet
, *p
;
1645 gdb_assert (numsigs
< 256);
1646 for (i
= 0; i
< numsigs
; i
++)
1648 if (pass_signals
[i
])
1651 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1652 strcpy (pass_packet
, "QPassSignals:");
1653 p
= pass_packet
+ strlen (pass_packet
);
1654 for (i
= 0; i
< numsigs
; i
++)
1656 if (pass_signals
[i
])
1659 *p
++ = tohex (i
>> 4);
1660 *p
++ = tohex (i
& 15);
1669 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1671 struct remote_state
*rs
= get_remote_state ();
1672 char *buf
= rs
->buf
;
1674 putpkt (pass_packet
);
1675 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1676 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1677 if (last_pass_packet
)
1678 xfree (last_pass_packet
);
1679 last_pass_packet
= pass_packet
;
1682 xfree (pass_packet
);
1686 /* The last QProgramSignals packet sent to the target. We bypass
1687 sending a new program signals list down to the target if the new
1688 packet is exactly the same as the last we sent. IOW, we only let
1689 the target know about program signals list changes. */
1691 static char *last_program_signals_packet
;
1693 /* If 'QProgramSignals' is supported, tell the remote stub what
1694 signals it should pass through to the inferior when detaching. */
1697 remote_program_signals (int numsigs
, unsigned char *signals
)
1699 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1704 gdb_assert (numsigs
< 256);
1705 for (i
= 0; i
< numsigs
; i
++)
1710 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1711 strcpy (packet
, "QProgramSignals:");
1712 p
= packet
+ strlen (packet
);
1713 for (i
= 0; i
< numsigs
; i
++)
1715 if (signal_pass_state (i
))
1718 *p
++ = tohex (i
>> 4);
1719 *p
++ = tohex (i
& 15);
1728 if (!last_program_signals_packet
1729 || strcmp (last_program_signals_packet
, packet
) != 0)
1731 struct remote_state
*rs
= get_remote_state ();
1732 char *buf
= rs
->buf
;
1735 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1736 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1737 xfree (last_program_signals_packet
);
1738 last_program_signals_packet
= packet
;
1745 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1746 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1747 thread. If GEN is set, set the general thread, if not, then set
1748 the step/continue thread. */
1750 set_thread (struct ptid ptid
, int gen
)
1752 struct remote_state
*rs
= get_remote_state ();
1753 ptid_t state
= gen
? general_thread
: continue_thread
;
1754 char *buf
= rs
->buf
;
1755 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1757 if (ptid_equal (state
, ptid
))
1761 *buf
++ = gen
? 'g' : 'c';
1762 if (ptid_equal (ptid
, magic_null_ptid
))
1763 xsnprintf (buf
, endbuf
- buf
, "0");
1764 else if (ptid_equal (ptid
, any_thread_ptid
))
1765 xsnprintf (buf
, endbuf
- buf
, "0");
1766 else if (ptid_equal (ptid
, minus_one_ptid
))
1767 xsnprintf (buf
, endbuf
- buf
, "-1");
1769 write_ptid (buf
, endbuf
, ptid
);
1771 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1773 general_thread
= ptid
;
1775 continue_thread
= ptid
;
1779 set_general_thread (struct ptid ptid
)
1781 set_thread (ptid
, 1);
1785 set_continue_thread (struct ptid ptid
)
1787 set_thread (ptid
, 0);
1790 /* Change the remote current process. Which thread within the process
1791 ends up selected isn't important, as long as it is the same process
1792 as what INFERIOR_PTID points to.
1794 This comes from that fact that there is no explicit notion of
1795 "selected process" in the protocol. The selected process for
1796 general operations is the process the selected general thread
1800 set_general_process (void)
1802 struct remote_state
*rs
= get_remote_state ();
1804 /* If the remote can't handle multiple processes, don't bother. */
1805 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1808 /* We only need to change the remote current thread if it's pointing
1809 at some other process. */
1810 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1811 set_general_thread (inferior_ptid
);
1815 /* Return nonzero if the thread PTID is still alive on the remote
1819 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1821 struct remote_state
*rs
= get_remote_state ();
1824 if (ptid_equal (ptid
, magic_null_ptid
))
1825 /* The main thread is always alive. */
1828 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1829 /* The main thread is always alive. This can happen after a
1830 vAttach, if the remote side doesn't support
1835 endp
= rs
->buf
+ get_remote_packet_size ();
1838 write_ptid (p
, endp
, ptid
);
1841 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1842 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1845 /* About these extended threadlist and threadinfo packets. They are
1846 variable length packets but, the fields within them are often fixed
1847 length. They are redundent enough to send over UDP as is the
1848 remote protocol in general. There is a matching unit test module
1851 #define OPAQUETHREADBYTES 8
1853 /* a 64 bit opaque identifier */
1854 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1856 /* WARNING: This threadref data structure comes from the remote O.S.,
1857 libstub protocol encoding, and remote.c. It is not particularly
1860 /* Right now, the internal structure is int. We want it to be bigger.
1861 Plan to fix this. */
1863 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1865 /* gdb_ext_thread_info is an internal GDB data structure which is
1866 equivalent to the reply of the remote threadinfo packet. */
1868 struct gdb_ext_thread_info
1870 threadref threadid
; /* External form of thread reference. */
1871 int active
; /* Has state interesting to GDB?
1873 char display
[256]; /* Brief state display, name,
1874 blocked/suspended. */
1875 char shortname
[32]; /* To be used to name threads. */
1876 char more_display
[256]; /* Long info, statistics, queue depth,
1880 /* The volume of remote transfers can be limited by submitting
1881 a mask containing bits specifying the desired information.
1882 Use a union of these values as the 'selection' parameter to
1883 get_thread_info. FIXME: Make these TAG names more thread specific. */
1885 #define TAG_THREADID 1
1886 #define TAG_EXISTS 2
1887 #define TAG_DISPLAY 4
1888 #define TAG_THREADNAME 8
1889 #define TAG_MOREDISPLAY 16
1891 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1893 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1895 static char *unpack_nibble (char *buf
, int *val
);
1897 static char *pack_nibble (char *buf
, int nibble
);
1899 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1901 static char *unpack_byte (char *buf
, int *value
);
1903 static char *pack_int (char *buf
, int value
);
1905 static char *unpack_int (char *buf
, int *value
);
1907 static char *unpack_string (char *src
, char *dest
, int length
);
1909 static char *pack_threadid (char *pkt
, threadref
*id
);
1911 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1913 void int_to_threadref (threadref
*id
, int value
);
1915 static int threadref_to_int (threadref
*ref
);
1917 static void copy_threadref (threadref
*dest
, threadref
*src
);
1919 static int threadmatch (threadref
*dest
, threadref
*src
);
1921 static char *pack_threadinfo_request (char *pkt
, int mode
,
1924 static int remote_unpack_thread_info_response (char *pkt
,
1925 threadref
*expectedref
,
1926 struct gdb_ext_thread_info
1930 static int remote_get_threadinfo (threadref
*threadid
,
1931 int fieldset
, /*TAG mask */
1932 struct gdb_ext_thread_info
*info
);
1934 static char *pack_threadlist_request (char *pkt
, int startflag
,
1936 threadref
*nextthread
);
1938 static int parse_threadlist_response (char *pkt
,
1940 threadref
*original_echo
,
1941 threadref
*resultlist
,
1944 static int remote_get_threadlist (int startflag
,
1945 threadref
*nextthread
,
1949 threadref
*threadlist
);
1951 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1953 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1954 void *context
, int looplimit
);
1956 static int remote_newthread_step (threadref
*ref
, void *context
);
1959 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1960 buffer we're allowed to write to. Returns
1961 BUF+CHARACTERS_WRITTEN. */
1964 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1967 struct remote_state
*rs
= get_remote_state ();
1969 if (remote_multi_process_p (rs
))
1971 pid
= ptid_get_pid (ptid
);
1973 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1975 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1977 tid
= ptid_get_tid (ptid
);
1979 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1981 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1986 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1987 passed the last parsed char. Returns null_ptid on error. */
1990 read_ptid (char *buf
, char **obuf
)
1994 ULONGEST pid
= 0, tid
= 0;
1998 /* Multi-process ptid. */
1999 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2001 error (_("invalid remote ptid: %s"), p
);
2004 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2007 return ptid_build (pid
, 0, tid
);
2010 /* No multi-process. Just a tid. */
2011 pp
= unpack_varlen_hex (p
, &tid
);
2013 /* Since the stub is not sending a process id, then default to
2014 what's in inferior_ptid, unless it's null at this point. If so,
2015 then since there's no way to know the pid of the reported
2016 threads, use the magic number. */
2017 if (ptid_equal (inferior_ptid
, null_ptid
))
2018 pid
= ptid_get_pid (magic_null_ptid
);
2020 pid
= ptid_get_pid (inferior_ptid
);
2024 return ptid_build (pid
, 0, tid
);
2027 /* Encode 64 bits in 16 chars of hex. */
2029 static const char hexchars
[] = "0123456789abcdef";
2032 ishex (int ch
, int *val
)
2034 if ((ch
>= 'a') && (ch
<= 'f'))
2036 *val
= ch
- 'a' + 10;
2039 if ((ch
>= 'A') && (ch
<= 'F'))
2041 *val
= ch
- 'A' + 10;
2044 if ((ch
>= '0') && (ch
<= '9'))
2055 if (ch
>= 'a' && ch
<= 'f')
2056 return ch
- 'a' + 10;
2057 if (ch
>= '0' && ch
<= '9')
2059 if (ch
>= 'A' && ch
<= 'F')
2060 return ch
- 'A' + 10;
2065 stub_unpack_int (char *buff
, int fieldlength
)
2072 nibble
= stubhex (*buff
++);
2076 retval
= retval
<< 4;
2082 unpack_varlen_hex (char *buff
, /* packet to parse */
2086 ULONGEST retval
= 0;
2088 while (ishex (*buff
, &nibble
))
2091 retval
= retval
<< 4;
2092 retval
|= nibble
& 0x0f;
2099 unpack_nibble (char *buf
, int *val
)
2101 *val
= fromhex (*buf
++);
2106 pack_nibble (char *buf
, int nibble
)
2108 *buf
++ = hexchars
[(nibble
& 0x0f)];
2113 pack_hex_byte (char *pkt
, int byte
)
2115 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2116 *pkt
++ = hexchars
[(byte
& 0xf)];
2121 unpack_byte (char *buf
, int *value
)
2123 *value
= stub_unpack_int (buf
, 2);
2128 pack_int (char *buf
, int value
)
2130 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2131 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2132 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2133 buf
= pack_hex_byte (buf
, (value
& 0xff));
2138 unpack_int (char *buf
, int *value
)
2140 *value
= stub_unpack_int (buf
, 8);
2144 #if 0 /* Currently unused, uncomment when needed. */
2145 static char *pack_string (char *pkt
, char *string
);
2148 pack_string (char *pkt
, char *string
)
2153 len
= strlen (string
);
2155 len
= 200; /* Bigger than most GDB packets, junk??? */
2156 pkt
= pack_hex_byte (pkt
, len
);
2160 if ((ch
== '\0') || (ch
== '#'))
2161 ch
= '*'; /* Protect encapsulation. */
2166 #endif /* 0 (unused) */
2169 unpack_string (char *src
, char *dest
, int length
)
2178 pack_threadid (char *pkt
, threadref
*id
)
2181 unsigned char *altid
;
2183 altid
= (unsigned char *) id
;
2184 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2186 pkt
= pack_hex_byte (pkt
, *altid
++);
2192 unpack_threadid (char *inbuf
, threadref
*id
)
2195 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2198 altref
= (char *) id
;
2200 while (inbuf
< limit
)
2202 x
= stubhex (*inbuf
++);
2203 y
= stubhex (*inbuf
++);
2204 *altref
++ = (x
<< 4) | y
;
2209 /* Externally, threadrefs are 64 bits but internally, they are still
2210 ints. This is due to a mismatch of specifications. We would like
2211 to use 64bit thread references internally. This is an adapter
2215 int_to_threadref (threadref
*id
, int value
)
2217 unsigned char *scan
;
2219 scan
= (unsigned char *) id
;
2225 *scan
++ = (value
>> 24) & 0xff;
2226 *scan
++ = (value
>> 16) & 0xff;
2227 *scan
++ = (value
>> 8) & 0xff;
2228 *scan
++ = (value
& 0xff);
2232 threadref_to_int (threadref
*ref
)
2235 unsigned char *scan
;
2241 value
= (value
<< 8) | ((*scan
++) & 0xff);
2246 copy_threadref (threadref
*dest
, threadref
*src
)
2249 unsigned char *csrc
, *cdest
;
2251 csrc
= (unsigned char *) src
;
2252 cdest
= (unsigned char *) dest
;
2259 threadmatch (threadref
*dest
, threadref
*src
)
2261 /* Things are broken right now, so just assume we got a match. */
2263 unsigned char *srcp
, *destp
;
2265 srcp
= (char *) src
;
2266 destp
= (char *) dest
;
2270 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2277 threadid:1, # always request threadid
2284 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2287 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2289 *pkt
++ = 'q'; /* Info Query */
2290 *pkt
++ = 'P'; /* process or thread info */
2291 pkt
= pack_int (pkt
, mode
); /* mode */
2292 pkt
= pack_threadid (pkt
, id
); /* threadid */
2293 *pkt
= '\0'; /* terminate */
2297 /* These values tag the fields in a thread info response packet. */
2298 /* Tagging the fields allows us to request specific fields and to
2299 add more fields as time goes by. */
2301 #define TAG_THREADID 1 /* Echo the thread identifier. */
2302 #define TAG_EXISTS 2 /* Is this process defined enough to
2303 fetch registers and its stack? */
2304 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2305 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2306 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2310 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2311 struct gdb_ext_thread_info
*info
)
2313 struct remote_state
*rs
= get_remote_state ();
2317 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2320 /* info->threadid = 0; FIXME: implement zero_threadref. */
2322 info
->display
[0] = '\0';
2323 info
->shortname
[0] = '\0';
2324 info
->more_display
[0] = '\0';
2326 /* Assume the characters indicating the packet type have been
2328 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2329 pkt
= unpack_threadid (pkt
, &ref
);
2332 warning (_("Incomplete response to threadinfo request."));
2333 if (!threadmatch (&ref
, expectedref
))
2334 { /* This is an answer to a different request. */
2335 warning (_("ERROR RMT Thread info mismatch."));
2338 copy_threadref (&info
->threadid
, &ref
);
2340 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2342 /* Packets are terminated with nulls. */
2343 while ((pkt
< limit
) && mask
&& *pkt
)
2345 pkt
= unpack_int (pkt
, &tag
); /* tag */
2346 pkt
= unpack_byte (pkt
, &length
); /* length */
2347 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2349 warning (_("ERROR RMT: threadinfo tag mismatch."));
2353 if (tag
== TAG_THREADID
)
2357 warning (_("ERROR RMT: length of threadid is not 16."));
2361 pkt
= unpack_threadid (pkt
, &ref
);
2362 mask
= mask
& ~TAG_THREADID
;
2365 if (tag
== TAG_EXISTS
)
2367 info
->active
= stub_unpack_int (pkt
, length
);
2369 mask
= mask
& ~(TAG_EXISTS
);
2372 warning (_("ERROR RMT: 'exists' length too long."));
2378 if (tag
== TAG_THREADNAME
)
2380 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2381 mask
= mask
& ~TAG_THREADNAME
;
2384 if (tag
== TAG_DISPLAY
)
2386 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2387 mask
= mask
& ~TAG_DISPLAY
;
2390 if (tag
== TAG_MOREDISPLAY
)
2392 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2393 mask
= mask
& ~TAG_MOREDISPLAY
;
2396 warning (_("ERROR RMT: unknown thread info tag."));
2397 break; /* Not a tag we know about. */
2403 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2404 struct gdb_ext_thread_info
*info
)
2406 struct remote_state
*rs
= get_remote_state ();
2409 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2411 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2413 if (rs
->buf
[0] == '\0')
2416 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2421 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2424 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2425 threadref
*nextthread
)
2427 *pkt
++ = 'q'; /* info query packet */
2428 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2429 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2430 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2431 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2436 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2439 parse_threadlist_response (char *pkt
, int result_limit
,
2440 threadref
*original_echo
, threadref
*resultlist
,
2443 struct remote_state
*rs
= get_remote_state ();
2445 int count
, resultcount
, done
;
2448 /* Assume the 'q' and 'M chars have been stripped. */
2449 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2450 /* done parse past here */
2451 pkt
= unpack_byte (pkt
, &count
); /* count field */
2452 pkt
= unpack_nibble (pkt
, &done
);
2453 /* The first threadid is the argument threadid. */
2454 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2455 while ((count
-- > 0) && (pkt
< limit
))
2457 pkt
= unpack_threadid (pkt
, resultlist
++);
2458 if (resultcount
++ >= result_limit
)
2467 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2468 int *done
, int *result_count
, threadref
*threadlist
)
2470 struct remote_state
*rs
= get_remote_state ();
2471 static threadref echo_nextthread
;
2474 /* Trancate result limit to be smaller than the packet size. */
2475 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2476 >= get_remote_packet_size ())
2477 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2479 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2481 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2483 if (*rs
->buf
== '\0')
2487 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2490 if (!threadmatch (&echo_nextthread
, nextthread
))
2492 /* FIXME: This is a good reason to drop the packet. */
2493 /* Possably, there is a duplicate response. */
2495 retransmit immediatly - race conditions
2496 retransmit after timeout - yes
2498 wait for packet, then exit
2500 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2501 return 0; /* I choose simply exiting. */
2503 if (*result_count
<= 0)
2507 warning (_("RMT ERROR : failed to get remote thread list."));
2510 return result
; /* break; */
2512 if (*result_count
> result_limit
)
2515 warning (_("RMT ERROR: threadlist response longer than requested."));
2521 /* This is the interface between remote and threads, remotes upper
2524 /* remote_find_new_threads retrieves the thread list and for each
2525 thread in the list, looks up the thread in GDB's internal list,
2526 adding the thread if it does not already exist. This involves
2527 getting partial thread lists from the remote target so, polling the
2528 quit_flag is required. */
2531 /* About this many threadisds fit in a packet. */
2533 #define MAXTHREADLISTRESULTS 32
2536 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2539 int done
, i
, result_count
;
2543 static threadref nextthread
;
2544 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2549 if (loopcount
++ > looplimit
)
2552 warning (_("Remote fetch threadlist -infinite loop-."));
2555 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2556 &done
, &result_count
, resultthreadlist
))
2561 /* Clear for later iterations. */
2563 /* Setup to resume next batch of thread references, set nextthread. */
2564 if (result_count
>= 1)
2565 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2567 while (result_count
--)
2568 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2575 remote_newthread_step (threadref
*ref
, void *context
)
2577 int pid
= ptid_get_pid (inferior_ptid
);
2578 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2580 if (!in_thread_list (ptid
))
2582 return 1; /* continue iterator */
2585 #define CRAZY_MAX_THREADS 1000
2588 remote_current_thread (ptid_t oldpid
)
2590 struct remote_state
*rs
= get_remote_state ();
2593 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2594 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2595 return read_ptid (&rs
->buf
[2], NULL
);
2600 /* Find new threads for info threads command.
2601 * Original version, using John Metzler's thread protocol.
2605 remote_find_new_threads (void)
2607 remote_threadlist_iterator (remote_newthread_step
, 0,
2611 #if defined(HAVE_LIBEXPAT)
2613 typedef struct thread_item
2619 DEF_VEC_O(thread_item_t
);
2621 struct threads_parsing_context
2623 VEC (thread_item_t
) *items
;
2627 start_thread (struct gdb_xml_parser
*parser
,
2628 const struct gdb_xml_element
*element
,
2629 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2631 struct threads_parsing_context
*data
= user_data
;
2633 struct thread_item item
;
2635 struct gdb_xml_value
*attr
;
2637 id
= xml_find_attribute (attributes
, "id")->value
;
2638 item
.ptid
= read_ptid (id
, NULL
);
2640 attr
= xml_find_attribute (attributes
, "core");
2642 item
.core
= *(ULONGEST
*) attr
->value
;
2648 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2652 end_thread (struct gdb_xml_parser
*parser
,
2653 const struct gdb_xml_element
*element
,
2654 void *user_data
, const char *body_text
)
2656 struct threads_parsing_context
*data
= user_data
;
2658 if (body_text
&& *body_text
)
2659 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2662 const struct gdb_xml_attribute thread_attributes
[] = {
2663 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2664 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2665 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2668 const struct gdb_xml_element thread_children
[] = {
2669 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2672 const struct gdb_xml_element threads_children
[] = {
2673 { "thread", thread_attributes
, thread_children
,
2674 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2675 start_thread
, end_thread
},
2676 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2679 const struct gdb_xml_element threads_elements
[] = {
2680 { "threads", NULL
, threads_children
,
2681 GDB_XML_EF_NONE
, NULL
, NULL
},
2682 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2685 /* Discard the contents of the constructed thread info context. */
2688 clear_threads_parsing_context (void *p
)
2690 struct threads_parsing_context
*context
= p
;
2692 struct thread_item
*item
;
2694 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2695 xfree (item
->extra
);
2697 VEC_free (thread_item_t
, context
->items
);
2703 * Find all threads for info threads command.
2704 * Uses new thread protocol contributed by Cisco.
2705 * Falls back and attempts to use the older method (above)
2706 * if the target doesn't respond to the new method.
2710 remote_threads_info (struct target_ops
*ops
)
2712 struct remote_state
*rs
= get_remote_state ();
2716 if (remote_desc
== 0) /* paranoia */
2717 error (_("Command can only be used when connected to the remote target."));
2719 #if defined(HAVE_LIBEXPAT)
2720 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2722 char *xml
= target_read_stralloc (¤t_target
,
2723 TARGET_OBJECT_THREADS
, NULL
);
2725 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2729 struct threads_parsing_context context
;
2731 context
.items
= NULL
;
2732 make_cleanup (clear_threads_parsing_context
, &context
);
2734 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2735 threads_elements
, xml
, &context
) == 0)
2738 struct thread_item
*item
;
2741 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2744 if (!ptid_equal (item
->ptid
, null_ptid
))
2746 struct private_thread_info
*info
;
2747 /* In non-stop mode, we assume new found threads
2748 are running until proven otherwise with a
2749 stop reply. In all-stop, we can only get
2750 here if all threads are stopped. */
2751 int running
= non_stop
? 1 : 0;
2753 remote_notice_new_inferior (item
->ptid
, running
);
2755 info
= demand_private_info (item
->ptid
);
2756 info
->core
= item
->core
;
2757 info
->extra
= item
->extra
;
2764 do_cleanups (back_to
);
2769 if (use_threadinfo_query
)
2771 putpkt ("qfThreadInfo");
2772 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2774 if (bufp
[0] != '\0') /* q packet recognized */
2776 while (*bufp
++ == 'm') /* reply contains one or more TID */
2780 new_thread
= read_ptid (bufp
, &bufp
);
2781 if (!ptid_equal (new_thread
, null_ptid
))
2783 /* In non-stop mode, we assume new found threads
2784 are running until proven otherwise with a
2785 stop reply. In all-stop, we can only get
2786 here if all threads are stopped. */
2787 int running
= non_stop
? 1 : 0;
2789 remote_notice_new_inferior (new_thread
, running
);
2792 while (*bufp
++ == ','); /* comma-separated list */
2793 putpkt ("qsThreadInfo");
2794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2801 /* Only qfThreadInfo is supported in non-stop mode. */
2805 /* Else fall back to old method based on jmetzler protocol. */
2806 use_threadinfo_query
= 0;
2807 remote_find_new_threads ();
2812 * Collect a descriptive string about the given thread.
2813 * The target may say anything it wants to about the thread
2814 * (typically info about its blocked / runnable state, name, etc.).
2815 * This string will appear in the info threads display.
2817 * Optional: targets are not required to implement this function.
2821 remote_threads_extra_info (struct thread_info
*tp
)
2823 struct remote_state
*rs
= get_remote_state ();
2827 struct gdb_ext_thread_info threadinfo
;
2828 static char display_buf
[100]; /* arbitrary... */
2829 int n
= 0; /* position in display_buf */
2831 if (remote_desc
== 0) /* paranoia */
2832 internal_error (__FILE__
, __LINE__
,
2833 _("remote_threads_extra_info"));
2835 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2836 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2837 /* This is the main thread which was added by GDB. The remote
2838 server doesn't know about it. */
2841 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2843 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2845 if (info
&& info
->private)
2846 return info
->private->extra
;
2851 if (use_threadextra_query
)
2854 char *endb
= rs
->buf
+ get_remote_packet_size ();
2856 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2858 write_ptid (b
, endb
, tp
->ptid
);
2861 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2862 if (rs
->buf
[0] != 0)
2864 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2865 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2866 display_buf
[result
] = '\0';
2871 /* If the above query fails, fall back to the old method. */
2872 use_threadextra_query
= 0;
2873 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2874 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2875 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2876 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2877 if (threadinfo
.active
)
2879 if (*threadinfo
.shortname
)
2880 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2881 " Name: %s,", threadinfo
.shortname
);
2882 if (*threadinfo
.display
)
2883 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2884 " State: %s,", threadinfo
.display
);
2885 if (*threadinfo
.more_display
)
2886 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2887 " Priority: %s", threadinfo
.more_display
);
2891 /* For purely cosmetic reasons, clear up trailing commas. */
2892 if (',' == display_buf
[n
-1])
2893 display_buf
[n
-1] = ' ';
2902 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2903 struct static_tracepoint_marker
*marker
)
2905 struct remote_state
*rs
= get_remote_state ();
2908 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2910 p
+= hexnumstr (p
, addr
);
2912 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2916 error (_("Remote failure reply: %s"), p
);
2920 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2927 static VEC(static_tracepoint_marker_p
) *
2928 remote_static_tracepoint_markers_by_strid (const char *strid
)
2930 struct remote_state
*rs
= get_remote_state ();
2931 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2932 struct static_tracepoint_marker
*marker
= NULL
;
2933 struct cleanup
*old_chain
;
2936 /* Ask for a first packet of static tracepoint marker
2939 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2942 error (_("Remote failure reply: %s"), p
);
2944 old_chain
= make_cleanup (free_current_marker
, &marker
);
2949 marker
= XCNEW (struct static_tracepoint_marker
);
2953 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2955 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2957 VEC_safe_push (static_tracepoint_marker_p
,
2963 release_static_tracepoint_marker (marker
);
2964 memset (marker
, 0, sizeof (*marker
));
2967 while (*p
++ == ','); /* comma-separated list */
2968 /* Ask for another packet of static tracepoint definition. */
2970 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2974 do_cleanups (old_chain
);
2979 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2982 remote_get_ada_task_ptid (long lwp
, long thread
)
2984 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2988 /* Restart the remote side; this is an extended protocol operation. */
2991 extended_remote_restart (void)
2993 struct remote_state
*rs
= get_remote_state ();
2995 /* Send the restart command; for reasons I don't understand the
2996 remote side really expects a number after the "R". */
2997 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3000 remote_fileio_reset ();
3003 /* Clean up connection to a remote debugger. */
3006 remote_close (int quitting
)
3008 if (remote_desc
== NULL
)
3009 return; /* already closed */
3011 /* Make sure we leave stdin registered in the event loop, and we
3012 don't leave the async SIGINT signal handler installed. */
3013 remote_terminal_ours ();
3015 serial_close (remote_desc
);
3018 /* We don't have a connection to the remote stub anymore. Get rid
3019 of all the inferiors and their threads we were controlling.
3020 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3021 will be unable to find the thread corresponding to (pid, 0, 0). */
3022 inferior_ptid
= null_ptid
;
3023 discard_all_inferiors ();
3025 /* Stop replies may from inferiors which are still unknown to GDB.
3026 We are closing the remote target, so we should discard
3027 everything, including the stop replies from GDB-unknown
3029 discard_pending_stop_replies (NULL
);
3031 if (remote_async_inferior_event_token
)
3032 delete_async_event_handler (&remote_async_inferior_event_token
);
3033 if (remote_async_get_pending_events_token
)
3034 delete_async_event_handler (&remote_async_get_pending_events_token
);
3037 /* Query the remote side for the text, data and bss offsets. */
3042 struct remote_state
*rs
= get_remote_state ();
3045 int lose
, num_segments
= 0, do_sections
, do_segments
;
3046 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3047 struct section_offsets
*offs
;
3048 struct symfile_segment_data
*data
;
3050 if (symfile_objfile
== NULL
)
3053 putpkt ("qOffsets");
3054 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3057 if (buf
[0] == '\000')
3058 return; /* Return silently. Stub doesn't support
3062 warning (_("Remote failure reply: %s"), buf
);
3066 /* Pick up each field in turn. This used to be done with scanf, but
3067 scanf will make trouble if CORE_ADDR size doesn't match
3068 conversion directives correctly. The following code will work
3069 with any size of CORE_ADDR. */
3070 text_addr
= data_addr
= bss_addr
= 0;
3074 if (strncmp (ptr
, "Text=", 5) == 0)
3077 /* Don't use strtol, could lose on big values. */
3078 while (*ptr
&& *ptr
!= ';')
3079 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3081 if (strncmp (ptr
, ";Data=", 6) == 0)
3084 while (*ptr
&& *ptr
!= ';')
3085 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3090 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3093 while (*ptr
&& *ptr
!= ';')
3094 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3096 if (bss_addr
!= data_addr
)
3097 warning (_("Target reported unsupported offsets: %s"), buf
);
3102 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3105 /* Don't use strtol, could lose on big values. */
3106 while (*ptr
&& *ptr
!= ';')
3107 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3110 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3113 while (*ptr
&& *ptr
!= ';')
3114 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3122 error (_("Malformed response to offset query, %s"), buf
);
3123 else if (*ptr
!= '\0')
3124 warning (_("Target reported unsupported offsets: %s"), buf
);
3126 offs
= ((struct section_offsets
*)
3127 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3128 memcpy (offs
, symfile_objfile
->section_offsets
,
3129 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3131 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3132 do_segments
= (data
!= NULL
);
3133 do_sections
= num_segments
== 0;
3135 if (num_segments
> 0)
3137 segments
[0] = text_addr
;
3138 segments
[1] = data_addr
;
3140 /* If we have two segments, we can still try to relocate everything
3141 by assuming that the .text and .data offsets apply to the whole
3142 text and data segments. Convert the offsets given in the packet
3143 to base addresses for symfile_map_offsets_to_segments. */
3144 else if (data
&& data
->num_segments
== 2)
3146 segments
[0] = data
->segment_bases
[0] + text_addr
;
3147 segments
[1] = data
->segment_bases
[1] + data_addr
;
3150 /* If the object file has only one segment, assume that it is text
3151 rather than data; main programs with no writable data are rare,
3152 but programs with no code are useless. Of course the code might
3153 have ended up in the data segment... to detect that we would need
3154 the permissions here. */
3155 else if (data
&& data
->num_segments
== 1)
3157 segments
[0] = data
->segment_bases
[0] + text_addr
;
3160 /* There's no way to relocate by segment. */
3166 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3167 offs
, num_segments
, segments
);
3169 if (ret
== 0 && !do_sections
)
3170 error (_("Can not handle qOffsets TextSeg "
3171 "response with this symbol file"));
3178 free_symfile_segment_data (data
);
3182 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3184 /* This is a temporary kludge to force data and bss to use the
3185 same offsets because that's what nlmconv does now. The real
3186 solution requires changes to the stub and remote.c that I
3187 don't have time to do right now. */
3189 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3190 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3193 objfile_relocate (symfile_objfile
, offs
);
3196 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3197 threads we know are stopped already. This is used during the
3198 initial remote connection in non-stop mode --- threads that are
3199 reported as already being stopped are left stopped. */
3202 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3204 /* If we have a stop reply for this thread, it must be stopped. */
3205 if (peek_stop_reply (thread
->ptid
))
3206 set_stop_requested (thread
->ptid
, 1);
3211 /* Send interrupt_sequence to remote target. */
3213 send_interrupt_sequence (void)
3215 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3216 serial_write (remote_desc
, "\x03", 1);
3217 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3218 serial_send_break (remote_desc
);
3219 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3221 serial_send_break (remote_desc
);
3222 serial_write (remote_desc
, "g", 1);
3225 internal_error (__FILE__
, __LINE__
,
3226 _("Invalid value for interrupt_sequence_mode: %s."),
3227 interrupt_sequence_mode
);
3230 /* Query the remote target for which is the current thread/process,
3231 add it to our tables, and update INFERIOR_PTID. The caller is
3232 responsible for setting the state such that the remote end is ready
3233 to return the current thread. */
3236 add_current_inferior_and_thread (void)
3238 struct remote_state
*rs
= get_remote_state ();
3242 inferior_ptid
= null_ptid
;
3244 /* Now, if we have thread information, update inferior_ptid. */
3245 ptid
= remote_current_thread (inferior_ptid
);
3246 if (!ptid_equal (ptid
, null_ptid
))
3248 if (!remote_multi_process_p (rs
))
3251 inferior_ptid
= ptid
;
3255 /* Without this, some commands which require an active target
3256 (such as kill) won't work. This variable serves (at least)
3257 double duty as both the pid of the target process (if it has
3258 such), and as a flag indicating that a target is active. */
3259 inferior_ptid
= magic_null_ptid
;
3263 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3265 /* Add the main thread. */
3266 add_thread_silent (inferior_ptid
);
3270 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3272 struct remote_state
*rs
= get_remote_state ();
3273 struct packet_config
*noack_config
;
3274 char *wait_status
= NULL
;
3276 immediate_quit
++; /* Allow user to interrupt it. */
3279 if (interrupt_on_connect
)
3280 send_interrupt_sequence ();
3282 /* Ack any packet which the remote side has already sent. */
3283 serial_write (remote_desc
, "+", 1);
3285 /* Signal other parts that we're going through the initial setup,
3286 and so things may not be stable yet. */
3287 rs
->starting_up
= 1;
3289 /* The first packet we send to the target is the optional "supported
3290 packets" request. If the target can answer this, it will tell us
3291 which later probes to skip. */
3292 remote_query_supported ();
3294 /* If the stub wants to get a QAllow, compose one and send it. */
3295 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3296 remote_set_permissions ();
3298 /* Next, we possibly activate noack mode.
3300 If the QStartNoAckMode packet configuration is set to AUTO,
3301 enable noack mode if the stub reported a wish for it with
3304 If set to TRUE, then enable noack mode even if the stub didn't
3305 report it in qSupported. If the stub doesn't reply OK, the
3306 session ends with an error.
3308 If FALSE, then don't activate noack mode, regardless of what the
3309 stub claimed should be the default with qSupported. */
3311 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3313 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3314 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3315 && noack_config
->support
== PACKET_ENABLE
))
3317 putpkt ("QStartNoAckMode");
3318 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3319 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3325 /* Tell the remote that we are using the extended protocol. */
3327 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3330 /* Let the target know which signals it is allowed to pass down to
3332 update_signals_program_target ();
3334 /* Next, if the target can specify a description, read it. We do
3335 this before anything involving memory or registers. */
3336 target_find_description ();
3338 /* Next, now that we know something about the target, update the
3339 address spaces in the program spaces. */
3340 update_address_spaces ();
3342 /* On OSs where the list of libraries is global to all
3343 processes, we fetch them early. */
3344 if (gdbarch_has_global_solist (target_gdbarch ()))
3345 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3349 if (!rs
->non_stop_aware
)
3350 error (_("Non-stop mode requested, but remote "
3351 "does not support non-stop"));
3353 putpkt ("QNonStop:1");
3354 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3356 if (strcmp (rs
->buf
, "OK") != 0)
3357 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3359 /* Find about threads and processes the stub is already
3360 controlling. We default to adding them in the running state.
3361 The '?' query below will then tell us about which threads are
3363 remote_threads_info (target
);
3365 else if (rs
->non_stop_aware
)
3367 /* Don't assume that the stub can operate in all-stop mode.
3368 Request it explicitly. */
3369 putpkt ("QNonStop:0");
3370 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3372 if (strcmp (rs
->buf
, "OK") != 0)
3373 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3376 /* Check whether the target is running now. */
3378 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3384 struct inferior
*inf
;
3386 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3389 error (_("The target is not running (try extended-remote?)"));
3391 /* We're connected, but not running. Drop out before we
3392 call start_remote. */
3393 rs
->starting_up
= 0;
3398 /* Save the reply for later. */
3399 wait_status
= alloca (strlen (rs
->buf
) + 1);
3400 strcpy (wait_status
, rs
->buf
);
3403 /* Let the stub know that we want it to return the thread. */
3404 set_continue_thread (minus_one_ptid
);
3406 add_current_inferior_and_thread ();
3408 /* init_wait_for_inferior should be called before get_offsets in order
3409 to manage `inserted' flag in bp loc in a correct state.
3410 breakpoint_init_inferior, called from init_wait_for_inferior, set
3411 `inserted' flag to 0, while before breakpoint_re_set, called from
3412 start_remote, set `inserted' flag to 1. In the initialization of
3413 inferior, breakpoint_init_inferior should be called first, and then
3414 breakpoint_re_set can be called. If this order is broken, state of
3415 `inserted' flag is wrong, and cause some problems on breakpoint
3417 init_wait_for_inferior ();
3419 get_offsets (); /* Get text, data & bss offsets. */
3421 /* If we could not find a description using qXfer, and we know
3422 how to do it some other way, try again. This is not
3423 supported for non-stop; it could be, but it is tricky if
3424 there are no stopped threads when we connect. */
3425 if (remote_read_description_p (target
)
3426 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3428 target_clear_description ();
3429 target_find_description ();
3432 /* Use the previously fetched status. */
3433 gdb_assert (wait_status
!= NULL
);
3434 strcpy (rs
->buf
, wait_status
);
3435 rs
->cached_wait_status
= 1;
3438 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3442 /* Clear WFI global state. Do this before finding about new
3443 threads and inferiors, and setting the current inferior.
3444 Otherwise we would clear the proceed status of the current
3445 inferior when we want its stop_soon state to be preserved
3446 (see notice_new_inferior). */
3447 init_wait_for_inferior ();
3449 /* In non-stop, we will either get an "OK", meaning that there
3450 are no stopped threads at this time; or, a regular stop
3451 reply. In the latter case, there may be more than one thread
3452 stopped --- we pull them all out using the vStopped
3454 if (strcmp (rs
->buf
, "OK") != 0)
3456 struct stop_reply
*stop_reply
;
3457 struct cleanup
*old_chain
;
3459 stop_reply
= stop_reply_xmalloc ();
3460 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3462 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3463 discard_cleanups (old_chain
);
3465 /* get_pending_stop_replies acks this one, and gets the rest
3467 pending_stop_reply
= stop_reply
;
3468 remote_get_pending_stop_replies ();
3470 /* Make sure that threads that were stopped remain
3472 iterate_over_threads (set_stop_requested_callback
, NULL
);
3475 if (target_can_async_p ())
3476 target_async (inferior_event_handler
, 0);
3478 if (thread_count () == 0)
3481 error (_("The target is not running (try extended-remote?)"));
3483 /* We're connected, but not running. Drop out before we
3484 call start_remote. */
3485 rs
->starting_up
= 0;
3489 /* Let the stub know that we want it to return the thread. */
3491 /* Force the stub to choose a thread. */
3492 set_general_thread (null_ptid
);
3495 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3496 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3497 error (_("remote didn't report the current thread in non-stop mode"));
3499 get_offsets (); /* Get text, data & bss offsets. */
3501 /* In non-stop mode, any cached wait status will be stored in
3502 the stop reply queue. */
3503 gdb_assert (wait_status
== NULL
);
3505 /* Report all signals during attach/startup. */
3506 remote_pass_signals (0, NULL
);
3509 /* If we connected to a live target, do some additional setup. */
3510 if (target_has_execution
)
3512 if (exec_bfd
) /* No use without an exec file. */
3513 remote_check_symbols (symfile_objfile
);
3516 /* Possibly the target has been engaged in a trace run started
3517 previously; find out where things are at. */
3518 if (remote_get_trace_status (current_trace_status ()) != -1)
3520 struct uploaded_tp
*uploaded_tps
= NULL
;
3521 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3523 if (current_trace_status ()->running
)
3524 printf_filtered (_("Trace is already running on the target.\n"));
3526 /* Get trace state variables first, they may be checked when
3527 parsing uploaded commands. */
3529 remote_upload_trace_state_variables (&uploaded_tsvs
);
3531 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3533 remote_upload_tracepoints (&uploaded_tps
);
3535 merge_uploaded_tracepoints (&uploaded_tps
);
3538 /* The thread and inferior lists are now synchronized with the
3539 target, our symbols have been relocated, and we're merged the
3540 target's tracepoints with ours. We're done with basic start
3542 rs
->starting_up
= 0;
3544 /* If breakpoints are global, insert them now. */
3545 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3546 && breakpoints_always_inserted_mode ())
3547 insert_breakpoints ();
3550 /* Open a connection to a remote debugger.
3551 NAME is the filename used for communication. */
3554 remote_open (char *name
, int from_tty
)
3556 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3559 /* Open a connection to a remote debugger using the extended
3560 remote gdb protocol. NAME is the filename used for communication. */
3563 extended_remote_open (char *name
, int from_tty
)
3565 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3568 /* Generic code for opening a connection to a remote target. */
3571 init_all_packet_configs (void)
3575 for (i
= 0; i
< PACKET_MAX
; i
++)
3576 update_packet_config (&remote_protocol_packets
[i
]);
3579 /* Symbol look-up. */
3582 remote_check_symbols (struct objfile
*objfile
)
3584 struct remote_state
*rs
= get_remote_state ();
3585 char *msg
, *reply
, *tmp
;
3586 struct minimal_symbol
*sym
;
3589 /* The remote side has no concept of inferiors that aren't running
3590 yet, it only knows about running processes. If we're connected
3591 but our current inferior is not running, we should not invite the
3592 remote target to request symbol lookups related to its
3593 (unrelated) current process. */
3594 if (!target_has_execution
)
3597 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3600 /* Make sure the remote is pointing at the right process. Note
3601 there's no way to select "no process". */
3602 set_general_process ();
3604 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3605 because we need both at the same time. */
3606 msg
= alloca (get_remote_packet_size ());
3608 /* Invite target to request symbol lookups. */
3610 putpkt ("qSymbol::");
3611 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3612 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3615 while (strncmp (reply
, "qSymbol:", 8) == 0)
3618 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3620 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3622 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3625 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3626 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3628 /* If this is a function address, return the start of code
3629 instead of any data function descriptor. */
3630 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3634 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3635 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3639 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3644 static struct serial
*
3645 remote_serial_open (char *name
)
3647 static int udp_warning
= 0;
3649 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3650 of in ser-tcp.c, because it is the remote protocol assuming that the
3651 serial connection is reliable and not the serial connection promising
3653 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3655 warning (_("The remote protocol may be unreliable over UDP.\n"
3656 "Some events may be lost, rendering further debugging "
3661 return serial_open (name
);
3664 /* Inform the target of our permission settings. The permission flags
3665 work without this, but if the target knows the settings, it can do
3666 a couple things. First, it can add its own check, to catch cases
3667 that somehow manage to get by the permissions checks in target
3668 methods. Second, if the target is wired to disallow particular
3669 settings (for instance, a system in the field that is not set up to
3670 be able to stop at a breakpoint), it can object to any unavailable
3674 remote_set_permissions (void)
3676 struct remote_state
*rs
= get_remote_state ();
3678 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3679 "WriteReg:%x;WriteMem:%x;"
3680 "InsertBreak:%x;InsertTrace:%x;"
3681 "InsertFastTrace:%x;Stop:%x",
3682 may_write_registers
, may_write_memory
,
3683 may_insert_breakpoints
, may_insert_tracepoints
,
3684 may_insert_fast_tracepoints
, may_stop
);
3686 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3688 /* If the target didn't like the packet, warn the user. Do not try
3689 to undo the user's settings, that would just be maddening. */
3690 if (strcmp (rs
->buf
, "OK") != 0)
3691 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3694 /* This type describes each known response to the qSupported
3696 struct protocol_feature
3698 /* The name of this protocol feature. */
3701 /* The default for this protocol feature. */
3702 enum packet_support default_support
;
3704 /* The function to call when this feature is reported, or after
3705 qSupported processing if the feature is not supported.
3706 The first argument points to this structure. The second
3707 argument indicates whether the packet requested support be
3708 enabled, disabled, or probed (or the default, if this function
3709 is being called at the end of processing and this feature was
3710 not reported). The third argument may be NULL; if not NULL, it
3711 is a NUL-terminated string taken from the packet following
3712 this feature's name and an equals sign. */
3713 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3716 /* The corresponding packet for this feature. Only used if
3717 FUNC is remote_supported_packet. */
3722 remote_supported_packet (const struct protocol_feature
*feature
,
3723 enum packet_support support
,
3724 const char *argument
)
3728 warning (_("Remote qSupported response supplied an unexpected value for"
3729 " \"%s\"."), feature
->name
);
3733 if (remote_protocol_packets
[feature
->packet
].support
3734 == PACKET_SUPPORT_UNKNOWN
)
3735 remote_protocol_packets
[feature
->packet
].support
= support
;
3739 remote_packet_size (const struct protocol_feature
*feature
,
3740 enum packet_support support
, const char *value
)
3742 struct remote_state
*rs
= get_remote_state ();
3747 if (support
!= PACKET_ENABLE
)
3750 if (value
== NULL
|| *value
== '\0')
3752 warning (_("Remote target reported \"%s\" without a size."),
3758 packet_size
= strtol (value
, &value_end
, 16);
3759 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3761 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3762 feature
->name
, value
);
3766 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3768 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3769 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3770 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3773 /* Record the new maximum packet size. */
3774 rs
->explicit_packet_size
= packet_size
;
3778 remote_multi_process_feature (const struct protocol_feature
*feature
,
3779 enum packet_support support
, const char *value
)
3781 struct remote_state
*rs
= get_remote_state ();
3783 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3787 remote_non_stop_feature (const struct protocol_feature
*feature
,
3788 enum packet_support support
, const char *value
)
3790 struct remote_state
*rs
= get_remote_state ();
3792 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3796 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3797 enum packet_support support
,
3800 struct remote_state
*rs
= get_remote_state ();
3802 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3806 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3807 enum packet_support support
,
3810 struct remote_state
*rs
= get_remote_state ();
3812 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3816 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3817 enum packet_support support
,
3820 struct remote_state
*rs
= get_remote_state ();
3822 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3826 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3827 enum packet_support support
,
3830 struct remote_state
*rs
= get_remote_state ();
3832 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3836 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3837 enum packet_support support
,
3840 struct remote_state
*rs
= get_remote_state ();
3842 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3846 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3847 enum packet_support support
,
3850 struct remote_state
*rs
= get_remote_state ();
3852 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3856 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3857 enum packet_support support
,
3860 struct remote_state
*rs
= get_remote_state ();
3862 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3866 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3867 enum packet_support support
,
3870 struct remote_state
*rs
= get_remote_state ();
3872 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3876 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3877 enum packet_support support
,
3880 struct remote_state
*rs
= get_remote_state ();
3882 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3885 static struct protocol_feature remote_protocol_features
[] = {
3886 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3887 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3888 PACKET_qXfer_auxv
},
3889 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3890 PACKET_qXfer_features
},
3891 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3892 PACKET_qXfer_libraries
},
3893 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3894 PACKET_qXfer_libraries_svr4
},
3895 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3896 PACKET_qXfer_memory_map
},
3897 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3898 PACKET_qXfer_spu_read
},
3899 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3900 PACKET_qXfer_spu_write
},
3901 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3902 PACKET_qXfer_osdata
},
3903 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3904 PACKET_qXfer_threads
},
3905 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3906 PACKET_qXfer_traceframe_info
},
3907 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3908 PACKET_QPassSignals
},
3909 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3910 PACKET_QProgramSignals
},
3911 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3912 PACKET_QStartNoAckMode
},
3913 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3914 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3915 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3916 PACKET_qXfer_siginfo_read
},
3917 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3918 PACKET_qXfer_siginfo_write
},
3919 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3920 PACKET_ConditionalTracepoints
},
3921 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3922 PACKET_ConditionalBreakpoints
},
3923 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3924 PACKET_BreakpointCommands
},
3925 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3926 PACKET_FastTracepoints
},
3927 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3928 PACKET_StaticTracepoints
},
3929 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3930 PACKET_InstallInTrace
},
3931 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3933 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3935 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3937 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3938 PACKET_TracepointSource
},
3939 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3941 { "EnableDisableTracepoints", PACKET_DISABLE
,
3942 remote_enable_disable_tracepoint_feature
, -1 },
3943 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3944 PACKET_qXfer_fdpic
},
3945 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3947 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3948 PACKET_QDisableRandomization
},
3949 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3950 { "tracenz", PACKET_DISABLE
,
3951 remote_string_tracing_feature
, -1 },
3954 static char *remote_support_xml
;
3956 /* Register string appended to "xmlRegisters=" in qSupported query. */
3959 register_remote_support_xml (const char *xml
)
3961 #if defined(HAVE_LIBEXPAT)
3962 if (remote_support_xml
== NULL
)
3963 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3966 char *copy
= xstrdup (remote_support_xml
+ 13);
3967 char *p
= strtok (copy
, ",");
3971 if (strcmp (p
, xml
) == 0)
3978 while ((p
= strtok (NULL
, ",")) != NULL
);
3981 remote_support_xml
= reconcat (remote_support_xml
,
3982 remote_support_xml
, ",", xml
,
3989 remote_query_supported_append (char *msg
, const char *append
)
3992 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3994 return xstrdup (append
);
3998 remote_query_supported (void)
4000 struct remote_state
*rs
= get_remote_state ();
4003 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4005 /* The packet support flags are handled differently for this packet
4006 than for most others. We treat an error, a disabled packet, and
4007 an empty response identically: any features which must be reported
4008 to be used will be automatically disabled. An empty buffer
4009 accomplishes this, since that is also the representation for a list
4010 containing no features. */
4013 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4016 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4018 q
= remote_query_supported_append (q
, "multiprocess+");
4020 if (remote_support_xml
)
4021 q
= remote_query_supported_append (q
, remote_support_xml
);
4023 q
= remote_query_supported_append (q
, "qRelocInsn+");
4025 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4028 do_cleanups (old_chain
);
4030 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4032 /* If an error occured, warn, but do not return - just reset the
4033 buffer to empty and go on to disable features. */
4034 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4037 warning (_("Remote failure reply: %s"), rs
->buf
);
4042 memset (seen
, 0, sizeof (seen
));
4047 enum packet_support is_supported
;
4048 char *p
, *end
, *name_end
, *value
;
4050 /* First separate out this item from the rest of the packet. If
4051 there's another item after this, we overwrite the separator
4052 (terminated strings are much easier to work with). */
4054 end
= strchr (p
, ';');
4057 end
= p
+ strlen (p
);
4067 warning (_("empty item in \"qSupported\" response"));
4072 name_end
= strchr (p
, '=');
4075 /* This is a name=value entry. */
4076 is_supported
= PACKET_ENABLE
;
4077 value
= name_end
+ 1;
4086 is_supported
= PACKET_ENABLE
;
4090 is_supported
= PACKET_DISABLE
;
4094 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4098 warning (_("unrecognized item \"%s\" "
4099 "in \"qSupported\" response"), p
);
4105 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4106 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4108 const struct protocol_feature
*feature
;
4111 feature
= &remote_protocol_features
[i
];
4112 feature
->func (feature
, is_supported
, value
);
4117 /* If we increased the packet size, make sure to increase the global
4118 buffer size also. We delay this until after parsing the entire
4119 qSupported packet, because this is the same buffer we were
4121 if (rs
->buf_size
< rs
->explicit_packet_size
)
4123 rs
->buf_size
= rs
->explicit_packet_size
;
4124 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4127 /* Handle the defaults for unmentioned features. */
4128 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4131 const struct protocol_feature
*feature
;
4133 feature
= &remote_protocol_features
[i
];
4134 feature
->func (feature
, feature
->default_support
, NULL
);
4140 remote_open_1 (char *name
, int from_tty
,
4141 struct target_ops
*target
, int extended_p
)
4143 struct remote_state
*rs
= get_remote_state ();
4146 error (_("To open a remote debug connection, you need to specify what\n"
4147 "serial device is attached to the remote system\n"
4148 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4150 /* See FIXME above. */
4151 if (!target_async_permitted
)
4152 wait_forever_enabled_p
= 1;
4154 /* If we're connected to a running target, target_preopen will kill it.
4155 But if we're connected to a target system with no running process,
4156 then we will still be connected when it returns. Ask this question
4157 first, before target_preopen has a chance to kill anything. */
4158 if (remote_desc
!= NULL
&& !have_inferiors ())
4161 || query (_("Already connected to a remote target. Disconnect? ")))
4164 error (_("Still connected."));
4167 target_preopen (from_tty
);
4169 unpush_target (target
);
4171 /* This time without a query. If we were connected to an
4172 extended-remote target and target_preopen killed the running
4173 process, we may still be connected. If we are starting "target
4174 remote" now, the extended-remote target will not have been
4175 removed by unpush_target. */
4176 if (remote_desc
!= NULL
&& !have_inferiors ())
4179 /* Make sure we send the passed signals list the next time we resume. */
4180 xfree (last_pass_packet
);
4181 last_pass_packet
= NULL
;
4183 /* Make sure we send the program signals list the next time we
4185 xfree (last_program_signals_packet
);
4186 last_program_signals_packet
= NULL
;
4188 remote_fileio_reset ();
4189 reopen_exec_file ();
4192 remote_desc
= remote_serial_open (name
);
4194 perror_with_name (name
);
4196 if (baud_rate
!= -1)
4198 if (serial_setbaudrate (remote_desc
, baud_rate
))
4200 /* The requested speed could not be set. Error out to
4201 top level after closing remote_desc. Take care to
4202 set remote_desc to NULL to avoid closing remote_desc
4204 serial_close (remote_desc
);
4206 perror_with_name (name
);
4210 serial_raw (remote_desc
);
4212 /* If there is something sitting in the buffer we might take it as a
4213 response to a command, which would be bad. */
4214 serial_flush_input (remote_desc
);
4218 puts_filtered ("Remote debugging using ");
4219 puts_filtered (name
);
4220 puts_filtered ("\n");
4222 push_target (target
); /* Switch to using remote target now. */
4224 /* Register extra event sources in the event loop. */
4225 remote_async_inferior_event_token
4226 = create_async_event_handler (remote_async_inferior_event_handler
,
4228 remote_async_get_pending_events_token
4229 = create_async_event_handler (remote_async_get_pending_events_handler
,
4232 /* Reset the target state; these things will be queried either by
4233 remote_query_supported or as they are needed. */
4234 init_all_packet_configs ();
4235 rs
->cached_wait_status
= 0;
4236 rs
->explicit_packet_size
= 0;
4238 rs
->multi_process_aware
= 0;
4239 rs
->extended
= extended_p
;
4240 rs
->non_stop_aware
= 0;
4241 rs
->waiting_for_stop_reply
= 0;
4242 rs
->ctrlc_pending_p
= 0;
4244 general_thread
= not_sent_ptid
;
4245 continue_thread
= not_sent_ptid
;
4246 remote_traceframe_number
= -1;
4248 /* Probe for ability to use "ThreadInfo" query, as required. */
4249 use_threadinfo_query
= 1;
4250 use_threadextra_query
= 1;
4252 if (target_async_permitted
)
4254 /* With this target we start out by owning the terminal. */
4255 remote_async_terminal_ours_p
= 1;
4257 /* FIXME: cagney/1999-09-23: During the initial connection it is
4258 assumed that the target is already ready and able to respond to
4259 requests. Unfortunately remote_start_remote() eventually calls
4260 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4261 around this. Eventually a mechanism that allows
4262 wait_for_inferior() to expect/get timeouts will be
4264 wait_forever_enabled_p
= 0;
4267 /* First delete any symbols previously loaded from shared libraries. */
4268 no_shared_libraries (NULL
, 0);
4271 init_thread_list ();
4273 /* Start the remote connection. If error() or QUIT, discard this
4274 target (we'd otherwise be in an inconsistent state) and then
4275 propogate the error on up the exception chain. This ensures that
4276 the caller doesn't stumble along blindly assuming that the
4277 function succeeded. The CLI doesn't have this problem but other
4278 UI's, such as MI do.
4280 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4281 this function should return an error indication letting the
4282 caller restore the previous state. Unfortunately the command
4283 ``target remote'' is directly wired to this function making that
4284 impossible. On a positive note, the CLI side of this problem has
4285 been fixed - the function set_cmd_context() makes it possible for
4286 all the ``target ....'' commands to share a common callback
4287 function. See cli-dump.c. */
4289 volatile struct gdb_exception ex
;
4291 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4293 remote_start_remote (from_tty
, target
, extended_p
);
4297 /* Pop the partially set up target - unless something else did
4298 already before throwing the exception. */
4299 if (remote_desc
!= NULL
)
4301 if (target_async_permitted
)
4302 wait_forever_enabled_p
= 1;
4303 throw_exception (ex
);
4307 if (target_async_permitted
)
4308 wait_forever_enabled_p
= 1;
4311 /* This takes a program previously attached to and detaches it. After
4312 this is done, GDB can be used to debug some other program. We
4313 better not have left any breakpoints in the target program or it'll
4314 die when it hits one. */
4317 remote_detach_1 (char *args
, int from_tty
, int extended
)
4319 int pid
= ptid_get_pid (inferior_ptid
);
4320 struct remote_state
*rs
= get_remote_state ();
4323 error (_("Argument given to \"detach\" when remotely debugging."));
4325 if (!target_has_execution
)
4326 error (_("No process to detach from."));
4330 char *exec_file
= get_exec_file (0);
4331 if (exec_file
== NULL
)
4333 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4334 target_pid_to_str (pid_to_ptid (pid
)));
4335 gdb_flush (gdb_stdout
);
4338 /* Tell the remote target to detach. */
4339 if (remote_multi_process_p (rs
))
4340 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4342 strcpy (rs
->buf
, "D");
4345 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4347 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4349 else if (rs
->buf
[0] == '\0')
4350 error (_("Remote doesn't know how to detach"));
4352 error (_("Can't detach process."));
4354 if (from_tty
&& !extended
)
4355 puts_filtered (_("Ending remote debugging.\n"));
4357 target_mourn_inferior ();
4361 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4363 remote_detach_1 (args
, from_tty
, 0);
4367 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4369 remote_detach_1 (args
, from_tty
, 1);
4372 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4375 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4378 error (_("Argument given to \"disconnect\" when remotely debugging."));
4380 /* Make sure we unpush even the extended remote targets; mourn
4381 won't do it. So call remote_mourn_1 directly instead of
4382 target_mourn_inferior. */
4383 remote_mourn_1 (target
);
4386 puts_filtered ("Ending remote debugging.\n");
4389 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4390 be chatty about it. */
4393 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4395 struct remote_state
*rs
= get_remote_state ();
4397 char *wait_status
= NULL
;
4399 pid
= parse_pid_to_attach (args
);
4401 /* Remote PID can be freely equal to getpid, do not check it here the same
4402 way as in other targets. */
4404 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4405 error (_("This target does not support attaching to a process"));
4409 char *exec_file
= get_exec_file (0);
4412 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4413 target_pid_to_str (pid_to_ptid (pid
)));
4415 printf_unfiltered (_("Attaching to %s\n"),
4416 target_pid_to_str (pid_to_ptid (pid
)));
4418 gdb_flush (gdb_stdout
);
4421 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4423 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4425 if (packet_ok (rs
->buf
,
4426 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4430 /* Save the reply for later. */
4431 wait_status
= alloca (strlen (rs
->buf
) + 1);
4432 strcpy (wait_status
, rs
->buf
);
4434 else if (strcmp (rs
->buf
, "OK") != 0)
4435 error (_("Attaching to %s failed with: %s"),
4436 target_pid_to_str (pid_to_ptid (pid
)),
4439 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4440 error (_("This target does not support attaching to a process"));
4442 error (_("Attaching to %s failed"),
4443 target_pid_to_str (pid_to_ptid (pid
)));
4445 set_current_inferior (remote_add_inferior (0, pid
, 1));
4447 inferior_ptid
= pid_to_ptid (pid
);
4451 struct thread_info
*thread
;
4453 /* Get list of threads. */
4454 remote_threads_info (target
);
4456 thread
= first_thread_of_process (pid
);
4458 inferior_ptid
= thread
->ptid
;
4460 inferior_ptid
= pid_to_ptid (pid
);
4462 /* Invalidate our notion of the remote current thread. */
4463 record_currthread (minus_one_ptid
);
4467 /* Now, if we have thread information, update inferior_ptid. */
4468 inferior_ptid
= remote_current_thread (inferior_ptid
);
4470 /* Add the main thread to the thread list. */
4471 add_thread_silent (inferior_ptid
);
4474 /* Next, if the target can specify a description, read it. We do
4475 this before anything involving memory or registers. */
4476 target_find_description ();
4480 /* Use the previously fetched status. */
4481 gdb_assert (wait_status
!= NULL
);
4483 if (target_can_async_p ())
4485 struct stop_reply
*stop_reply
;
4486 struct cleanup
*old_chain
;
4488 stop_reply
= stop_reply_xmalloc ();
4489 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4490 remote_parse_stop_reply (wait_status
, stop_reply
);
4491 discard_cleanups (old_chain
);
4492 push_stop_reply (stop_reply
);
4494 target_async (inferior_event_handler
, 0);
4498 gdb_assert (wait_status
!= NULL
);
4499 strcpy (rs
->buf
, wait_status
);
4500 rs
->cached_wait_status
= 1;
4504 gdb_assert (wait_status
== NULL
);
4508 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4510 extended_remote_attach_1 (ops
, args
, from_tty
);
4513 /* Convert hex digit A to a number. */
4518 if (a
>= '0' && a
<= '9')
4520 else if (a
>= 'a' && a
<= 'f')
4521 return a
- 'a' + 10;
4522 else if (a
>= 'A' && a
<= 'F')
4523 return a
- 'A' + 10;
4525 error (_("Reply contains invalid hex digit %d"), a
);
4529 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4533 for (i
= 0; i
< count
; i
++)
4535 if (hex
[0] == 0 || hex
[1] == 0)
4537 /* Hex string is short, or of uneven length.
4538 Return the count that has been converted so far. */
4541 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4547 /* Convert number NIB to a hex digit. */
4555 return 'a' + nib
- 10;
4559 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4563 /* May use a length, or a nul-terminated string as input. */
4565 count
= strlen ((char *) bin
);
4567 for (i
= 0; i
< count
; i
++)
4569 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4570 *hex
++ = tohex (*bin
++ & 0xf);
4576 /* Check for the availability of vCont. This function should also check
4580 remote_vcont_probe (struct remote_state
*rs
)
4584 strcpy (rs
->buf
, "vCont?");
4586 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4589 /* Make sure that the features we assume are supported. */
4590 if (strncmp (buf
, "vCont", 5) == 0)
4593 int support_s
, support_S
, support_c
, support_C
;
4599 rs
->support_vCont_t
= 0;
4600 while (p
&& *p
== ';')
4603 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4605 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4607 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4609 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4611 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4612 rs
->support_vCont_t
= 1;
4614 p
= strchr (p
, ';');
4617 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4618 BUF will make packet_ok disable the packet. */
4619 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4623 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4626 /* Helper function for building "vCont" resumptions. Write a
4627 resumption to P. ENDP points to one-passed-the-end of the buffer
4628 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4629 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4630 resumed thread should be single-stepped and/or signalled. If PTID
4631 equals minus_one_ptid, then all threads are resumed; if PTID
4632 represents a process, then all threads of the process are resumed;
4633 the thread to be stepped and/or signalled is given in the global
4637 append_resumption (char *p
, char *endp
,
4638 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4640 struct remote_state
*rs
= get_remote_state ();
4642 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4643 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4645 p
+= xsnprintf (p
, endp
- p
, ";s");
4646 else if (siggnal
!= GDB_SIGNAL_0
)
4647 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4649 p
+= xsnprintf (p
, endp
- p
, ";c");
4651 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4655 /* All (-1) threads of process. */
4656 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4658 p
+= xsnprintf (p
, endp
- p
, ":");
4659 p
= write_ptid (p
, endp
, nptid
);
4661 else if (!ptid_equal (ptid
, minus_one_ptid
))
4663 p
+= xsnprintf (p
, endp
- p
, ":");
4664 p
= write_ptid (p
, endp
, ptid
);
4670 /* Append a vCont continue-with-signal action for threads that have a
4671 non-zero stop signal. */
4674 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4676 struct thread_info
*thread
;
4678 ALL_THREADS (thread
)
4679 if (ptid_match (thread
->ptid
, ptid
)
4680 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4681 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4682 && signal_pass_state (thread
->suspend
.stop_signal
))
4684 p
= append_resumption (p
, endp
, thread
->ptid
,
4685 0, thread
->suspend
.stop_signal
);
4686 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4692 /* Resume the remote inferior by using a "vCont" packet. The thread
4693 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4694 resumed thread should be single-stepped and/or signalled. If PTID
4695 equals minus_one_ptid, then all threads are resumed; the thread to
4696 be stepped and/or signalled is given in the global INFERIOR_PTID.
4697 This function returns non-zero iff it resumes the inferior.
4699 This function issues a strict subset of all possible vCont commands at the
4703 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4705 struct remote_state
*rs
= get_remote_state ();
4709 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4710 remote_vcont_probe (rs
);
4712 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4716 endp
= rs
->buf
+ get_remote_packet_size ();
4718 /* If we could generate a wider range of packets, we'd have to worry
4719 about overflowing BUF. Should there be a generic
4720 "multi-part-packet" packet? */
4722 p
+= xsnprintf (p
, endp
- p
, "vCont");
4724 if (ptid_equal (ptid
, magic_null_ptid
))
4726 /* MAGIC_NULL_PTID means that we don't have any active threads,
4727 so we don't have any TID numbers the inferior will
4728 understand. Make sure to only send forms that do not specify
4730 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4732 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4734 /* Resume all threads (of all processes, or of a single
4735 process), with preference for INFERIOR_PTID. This assumes
4736 inferior_ptid belongs to the set of all threads we are about
4738 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4740 /* Step inferior_ptid, with or without signal. */
4741 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4744 /* Also pass down any pending signaled resumption for other
4745 threads not the current. */
4746 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4748 /* And continue others without a signal. */
4749 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4753 /* Scheduler locking; resume only PTID. */
4754 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4757 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4762 /* In non-stop, the stub replies to vCont with "OK". The stop
4763 reply will be reported asynchronously by means of a `%Stop'
4765 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4766 if (strcmp (rs
->buf
, "OK") != 0)
4767 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4773 /* Tell the remote machine to resume. */
4775 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4777 static int last_sent_step
;
4780 remote_resume (struct target_ops
*ops
,
4781 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4783 struct remote_state
*rs
= get_remote_state ();
4786 last_sent_signal
= siggnal
;
4787 last_sent_step
= step
;
4789 /* The vCont packet doesn't need to specify threads via Hc. */
4790 /* No reverse support (yet) for vCont. */
4791 if (execution_direction
!= EXEC_REVERSE
)
4792 if (remote_vcont_resume (ptid
, step
, siggnal
))
4795 /* All other supported resume packets do use Hc, so set the continue
4797 if (ptid_equal (ptid
, minus_one_ptid
))
4798 set_continue_thread (any_thread_ptid
);
4800 set_continue_thread (ptid
);
4803 if (execution_direction
== EXEC_REVERSE
)
4805 /* We don't pass signals to the target in reverse exec mode. */
4806 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4807 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4811 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4812 error (_("Remote reverse-step not supported."));
4814 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4815 error (_("Remote reverse-continue not supported."));
4817 strcpy (buf
, step
? "bs" : "bc");
4819 else if (siggnal
!= GDB_SIGNAL_0
)
4821 buf
[0] = step
? 'S' : 'C';
4822 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4823 buf
[2] = tohex (((int) siggnal
) & 0xf);
4827 strcpy (buf
, step
? "s" : "c");
4832 /* We are about to start executing the inferior, let's register it
4833 with the event loop. NOTE: this is the one place where all the
4834 execution commands end up. We could alternatively do this in each
4835 of the execution commands in infcmd.c. */
4836 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4837 into infcmd.c in order to allow inferior function calls to work
4838 NOT asynchronously. */
4839 if (target_can_async_p ())
4840 target_async (inferior_event_handler
, 0);
4842 /* We've just told the target to resume. The remote server will
4843 wait for the inferior to stop, and then send a stop reply. In
4844 the mean time, we can't start another command/query ourselves
4845 because the stub wouldn't be ready to process it. This applies
4846 only to the base all-stop protocol, however. In non-stop (which
4847 only supports vCont), the stub replies with an "OK", and is
4848 immediate able to process further serial input. */
4850 rs
->waiting_for_stop_reply
= 1;
4854 /* Set up the signal handler for SIGINT, while the target is
4855 executing, ovewriting the 'regular' SIGINT signal handler. */
4857 initialize_sigint_signal_handler (void)
4859 signal (SIGINT
, handle_remote_sigint
);
4862 /* Signal handler for SIGINT, while the target is executing. */
4864 handle_remote_sigint (int sig
)
4866 signal (sig
, handle_remote_sigint_twice
);
4867 mark_async_signal_handler (sigint_remote_token
);
4870 /* Signal handler for SIGINT, installed after SIGINT has already been
4871 sent once. It will take effect the second time that the user sends
4874 handle_remote_sigint_twice (int sig
)
4876 signal (sig
, handle_remote_sigint
);
4877 mark_async_signal_handler (sigint_remote_twice_token
);
4880 /* Perform the real interruption of the target execution, in response
4883 async_remote_interrupt (gdb_client_data arg
)
4886 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4888 target_stop (inferior_ptid
);
4891 /* Perform interrupt, if the first attempt did not succeed. Just give
4892 up on the target alltogether. */
4894 async_remote_interrupt_twice (gdb_client_data arg
)
4897 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4902 /* Reinstall the usual SIGINT handlers, after the target has
4905 cleanup_sigint_signal_handler (void *dummy
)
4907 signal (SIGINT
, handle_sigint
);
4910 /* Send ^C to target to halt it. Target will respond, and send us a
4912 static void (*ofunc
) (int);
4914 /* The command line interface's stop routine. This function is installed
4915 as a signal handler for SIGINT. The first time a user requests a
4916 stop, we call remote_stop to send a break or ^C. If there is no
4917 response from the target (it didn't stop when the user requested it),
4918 we ask the user if he'd like to detach from the target. */
4920 remote_interrupt (int signo
)
4922 /* If this doesn't work, try more severe steps. */
4923 signal (signo
, remote_interrupt_twice
);
4925 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4928 /* The user typed ^C twice. */
4931 remote_interrupt_twice (int signo
)
4933 signal (signo
, ofunc
);
4934 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4935 signal (signo
, remote_interrupt
);
4938 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4939 thread, all threads of a remote process, or all threads of all
4943 remote_stop_ns (ptid_t ptid
)
4945 struct remote_state
*rs
= get_remote_state ();
4947 char *endp
= rs
->buf
+ get_remote_packet_size ();
4949 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4950 remote_vcont_probe (rs
);
4952 if (!rs
->support_vCont_t
)
4953 error (_("Remote server does not support stopping threads"));
4955 if (ptid_equal (ptid
, minus_one_ptid
)
4956 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4957 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4962 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4964 if (ptid_is_pid (ptid
))
4965 /* All (-1) threads of process. */
4966 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4969 /* Small optimization: if we already have a stop reply for
4970 this thread, no use in telling the stub we want this
4972 if (peek_stop_reply (ptid
))
4978 write_ptid (p
, endp
, nptid
);
4981 /* In non-stop, we get an immediate OK reply. The stop reply will
4982 come in asynchronously by notification. */
4984 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4985 if (strcmp (rs
->buf
, "OK") != 0)
4986 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4989 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4990 remote target. It is undefined which thread of which process
4991 reports the stop. */
4994 remote_stop_as (ptid_t ptid
)
4996 struct remote_state
*rs
= get_remote_state ();
4998 rs
->ctrlc_pending_p
= 1;
5000 /* If the inferior is stopped already, but the core didn't know
5001 about it yet, just ignore the request. The cached wait status
5002 will be collected in remote_wait. */
5003 if (rs
->cached_wait_status
)
5006 /* Send interrupt_sequence to remote target. */
5007 send_interrupt_sequence ();
5010 /* This is the generic stop called via the target vector. When a target
5011 interrupt is requested, either by the command line or the GUI, we
5012 will eventually end up here. */
5015 remote_stop (ptid_t ptid
)
5018 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5021 remote_stop_ns (ptid
);
5023 remote_stop_as (ptid
);
5026 /* Ask the user what to do when an interrupt is received. */
5029 interrupt_query (void)
5031 target_terminal_ours ();
5033 if (target_can_async_p ())
5035 signal (SIGINT
, handle_sigint
);
5036 deprecated_throw_reason (RETURN_QUIT
);
5040 if (query (_("Interrupted while waiting for the program.\n\
5041 Give up (and stop debugging it)? ")))
5044 deprecated_throw_reason (RETURN_QUIT
);
5048 target_terminal_inferior ();
5051 /* Enable/disable target terminal ownership. Most targets can use
5052 terminal groups to control terminal ownership. Remote targets are
5053 different in that explicit transfer of ownership to/from GDB/target
5057 remote_terminal_inferior (void)
5059 if (!target_async_permitted
)
5060 /* Nothing to do. */
5063 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5064 idempotent. The event-loop GDB talking to an asynchronous target
5065 with a synchronous command calls this function from both
5066 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5067 transfer the terminal to the target when it shouldn't this guard
5069 if (!remote_async_terminal_ours_p
)
5071 delete_file_handler (input_fd
);
5072 remote_async_terminal_ours_p
= 0;
5073 initialize_sigint_signal_handler ();
5074 /* NOTE: At this point we could also register our selves as the
5075 recipient of all input. Any characters typed could then be
5076 passed on down to the target. */
5080 remote_terminal_ours (void)
5082 if (!target_async_permitted
)
5083 /* Nothing to do. */
5086 /* See FIXME in remote_terminal_inferior. */
5087 if (remote_async_terminal_ours_p
)
5089 cleanup_sigint_signal_handler (NULL
);
5090 add_file_handler (input_fd
, stdin_event_handler
, 0);
5091 remote_async_terminal_ours_p
= 1;
5095 remote_console_output (char *msg
)
5099 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5102 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5106 fputs_unfiltered (tb
, gdb_stdtarg
);
5108 gdb_flush (gdb_stdtarg
);
5111 typedef struct cached_reg
5114 gdb_byte data
[MAX_REGISTER_SIZE
];
5117 DEF_VEC_O(cached_reg_t
);
5121 struct stop_reply
*next
;
5125 struct target_waitstatus ws
;
5127 /* Expedited registers. This makes remote debugging a bit more
5128 efficient for those targets that provide critical registers as
5129 part of their normal status mechanism (as another roundtrip to
5130 fetch them is avoided). */
5131 VEC(cached_reg_t
) *regcache
;
5133 int stopped_by_watchpoint_p
;
5134 CORE_ADDR watch_data_address
;
5142 /* The list of already fetched and acknowledged stop events. */
5143 static struct stop_reply
*stop_reply_queue
;
5145 static struct stop_reply
*
5146 stop_reply_xmalloc (void)
5148 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
5155 stop_reply_xfree (struct stop_reply
*r
)
5159 VEC_free (cached_reg_t
, r
->regcache
);
5164 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5165 discard everything. */
5168 discard_pending_stop_replies (struct inferior
*inf
)
5170 struct stop_reply
*prev
= NULL
, *reply
, *next
;
5172 /* Discard the in-flight notification. */
5173 if (pending_stop_reply
!= NULL
5175 || ptid_get_pid (pending_stop_reply
->ptid
) == inf
->pid
))
5177 stop_reply_xfree (pending_stop_reply
);
5178 pending_stop_reply
= NULL
;
5181 /* Discard the stop replies we have already pulled with
5183 for (reply
= stop_reply_queue
; reply
; reply
= next
)
5187 || ptid_get_pid (reply
->ptid
) == inf
->pid
)
5189 if (reply
== stop_reply_queue
)
5190 stop_reply_queue
= reply
->next
;
5192 prev
->next
= reply
->next
;
5194 stop_reply_xfree (reply
);
5201 /* Cleanup wrapper. */
5204 do_stop_reply_xfree (void *arg
)
5206 struct stop_reply
*r
= arg
;
5208 stop_reply_xfree (r
);
5211 /* Look for a queued stop reply belonging to PTID. If one is found,
5212 remove it from the queue, and return it. Returns NULL if none is
5213 found. If there are still queued events left to process, tell the
5214 event loop to get back to target_wait soon. */
5216 static struct stop_reply
*
5217 queued_stop_reply (ptid_t ptid
)
5219 struct stop_reply
*it
;
5220 struct stop_reply
**it_link
;
5222 it
= stop_reply_queue
;
5223 it_link
= &stop_reply_queue
;
5226 if (ptid_match (it
->ptid
, ptid
))
5228 *it_link
= it
->next
;
5233 it_link
= &it
->next
;
5237 if (stop_reply_queue
)
5238 /* There's still at least an event left. */
5239 mark_async_event_handler (remote_async_inferior_event_token
);
5244 /* Push a fully parsed stop reply in the stop reply queue. Since we
5245 know that we now have at least one queued event left to pass to the
5246 core side, tell the event loop to get back to target_wait soon. */
5249 push_stop_reply (struct stop_reply
*new_event
)
5251 struct stop_reply
*event
;
5253 if (stop_reply_queue
)
5255 for (event
= stop_reply_queue
;
5256 event
&& event
->next
;
5257 event
= event
->next
)
5260 event
->next
= new_event
;
5263 stop_reply_queue
= new_event
;
5265 mark_async_event_handler (remote_async_inferior_event_token
);
5268 /* Returns true if we have a stop reply for PTID. */
5271 peek_stop_reply (ptid_t ptid
)
5273 struct stop_reply
*it
;
5275 for (it
= stop_reply_queue
; it
; it
= it
->next
)
5276 if (ptid_equal (ptid
, it
->ptid
))
5278 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5285 /* Parse the stop reply in BUF. Either the function succeeds, and the
5286 result is stored in EVENT, or throws an error. */
5289 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5291 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5295 event
->ptid
= null_ptid
;
5296 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5297 event
->ws
.value
.integer
= 0;
5298 event
->solibs_changed
= 0;
5299 event
->replay_event
= 0;
5300 event
->stopped_by_watchpoint_p
= 0;
5301 event
->regcache
= NULL
;
5306 case 'T': /* Status with PC, SP, FP, ... */
5307 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5308 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5310 n... = register number
5311 r... = register contents
5314 p
= &buf
[3]; /* after Txx */
5322 /* If the packet contains a register number, save it in
5323 pnum and set p1 to point to the character following it.
5324 Otherwise p1 points to p. */
5326 /* If this packet is an awatch packet, don't parse the 'a'
5327 as a register number. */
5329 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5330 && strncmp (p
, "core", strlen ("core") != 0))
5332 /* Read the ``P'' register number. */
5333 pnum
= strtol (p
, &p_temp
, 16);
5339 if (p1
== p
) /* No register number present here. */
5341 p1
= strchr (p
, ':');
5343 error (_("Malformed packet(a) (missing colon): %s\n\
5346 if (strncmp (p
, "thread", p1
- p
) == 0)
5347 event
->ptid
= read_ptid (++p1
, &p
);
5348 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5349 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5350 || (strncmp (p
, "awatch", p1
- p
) == 0))
5352 event
->stopped_by_watchpoint_p
= 1;
5353 p
= unpack_varlen_hex (++p1
, &addr
);
5354 event
->watch_data_address
= (CORE_ADDR
) addr
;
5356 else if (strncmp (p
, "library", p1
- p
) == 0)
5360 while (*p_temp
&& *p_temp
!= ';')
5363 event
->solibs_changed
= 1;
5366 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5368 /* NO_HISTORY event.
5369 p1 will indicate "begin" or "end", but
5370 it makes no difference for now, so ignore it. */
5371 event
->replay_event
= 1;
5372 p_temp
= strchr (p1
+ 1, ';');
5376 else if (strncmp (p
, "core", p1
- p
) == 0)
5380 p
= unpack_varlen_hex (++p1
, &c
);
5385 /* Silently skip unknown optional info. */
5386 p_temp
= strchr (p1
+ 1, ';');
5393 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5394 cached_reg_t cached_reg
;
5399 error (_("Malformed packet(b) (missing colon): %s\n\
5405 error (_("Remote sent bad register number %s: %s\n\
5407 hex_string (pnum
), p
, buf
);
5409 cached_reg
.num
= reg
->regnum
;
5411 fieldsize
= hex2bin (p
, cached_reg
.data
,
5412 register_size (target_gdbarch (),
5415 if (fieldsize
< register_size (target_gdbarch (),
5417 warning (_("Remote reply is too short: %s"), buf
);
5419 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5423 error (_("Remote register badly formatted: %s\nhere: %s"),
5428 case 'S': /* Old style status, just signal only. */
5429 if (event
->solibs_changed
)
5430 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5431 else if (event
->replay_event
)
5432 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5435 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5436 event
->ws
.value
.sig
= (enum gdb_signal
)
5437 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5440 case 'W': /* Target exited. */
5447 /* GDB used to accept only 2 hex chars here. Stubs should
5448 only send more if they detect GDB supports multi-process
5450 p
= unpack_varlen_hex (&buf
[1], &value
);
5454 /* The remote process exited. */
5455 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5456 event
->ws
.value
.integer
= value
;
5460 /* The remote process exited with a signal. */
5461 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5462 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5465 /* If no process is specified, assume inferior_ptid. */
5466 pid
= ptid_get_pid (inferior_ptid
);
5475 else if (strncmp (p
,
5476 "process:", sizeof ("process:") - 1) == 0)
5480 p
+= sizeof ("process:") - 1;
5481 unpack_varlen_hex (p
, &upid
);
5485 error (_("unknown stop reply packet: %s"), buf
);
5488 error (_("unknown stop reply packet: %s"), buf
);
5489 event
->ptid
= pid_to_ptid (pid
);
5494 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5495 error (_("No process or thread specified in stop reply: %s"), buf
);
5498 /* When the stub wants to tell GDB about a new stop reply, it sends a
5499 stop notification (%Stop). Those can come it at any time, hence,
5500 we have to make sure that any pending putpkt/getpkt sequence we're
5501 making is finished, before querying the stub for more events with
5502 vStopped. E.g., if we started a vStopped sequence immediatelly
5503 upon receiving the %Stop notification, something like this could
5511 1.6) <-- (registers reply to step #1.3)
5513 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5516 To solve this, whenever we parse a %Stop notification sucessfully,
5517 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5518 doing whatever we were doing:
5524 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5525 2.5) <-- (registers reply to step #2.3)
5527 Eventualy after step #2.5, we return to the event loop, which
5528 notices there's an event on the
5529 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5530 associated callback --- the function below. At this point, we're
5531 always safe to start a vStopped sequence. :
5534 2.7) <-- T05 thread:2
5540 remote_get_pending_stop_replies (void)
5542 struct remote_state
*rs
= get_remote_state ();
5544 if (pending_stop_reply
)
5547 putpkt ("vStopped");
5549 /* Now we can rely on it. */
5550 push_stop_reply (pending_stop_reply
);
5551 pending_stop_reply
= NULL
;
5555 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5556 if (strcmp (rs
->buf
, "OK") == 0)
5560 struct cleanup
*old_chain
;
5561 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5563 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5564 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5567 putpkt ("vStopped");
5569 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5571 /* Now we can rely on it. */
5572 discard_cleanups (old_chain
);
5573 push_stop_reply (stop_reply
);
5576 /* We got an unknown stop reply. */
5577 do_cleanups (old_chain
);
5584 /* Called when it is decided that STOP_REPLY holds the info of the
5585 event that is to be returned to the core. This function always
5586 destroys STOP_REPLY. */
5589 process_stop_reply (struct stop_reply
*stop_reply
,
5590 struct target_waitstatus
*status
)
5594 *status
= stop_reply
->ws
;
5595 ptid
= stop_reply
->ptid
;
5597 /* If no thread/process was reported by the stub, assume the current
5599 if (ptid_equal (ptid
, null_ptid
))
5600 ptid
= inferior_ptid
;
5602 if (status
->kind
!= TARGET_WAITKIND_EXITED
5603 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5605 /* Expedited registers. */
5606 if (stop_reply
->regcache
)
5608 struct regcache
*regcache
5609 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5614 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5616 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5617 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5620 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5621 remote_watch_data_address
= stop_reply
->watch_data_address
;
5623 remote_notice_new_inferior (ptid
, 0);
5624 demand_private_info (ptid
)->core
= stop_reply
->core
;
5627 stop_reply_xfree (stop_reply
);
5631 /* The non-stop mode version of target_wait. */
5634 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5636 struct remote_state
*rs
= get_remote_state ();
5637 struct stop_reply
*stop_reply
;
5641 /* If in non-stop mode, get out of getpkt even if a
5642 notification is received. */
5644 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5645 0 /* forever */, &is_notif
);
5648 if (ret
!= -1 && !is_notif
)
5651 case 'E': /* Error of some sort. */
5652 /* We're out of sync with the target now. Did it continue
5653 or not? We can't tell which thread it was in non-stop,
5654 so just ignore this. */
5655 warning (_("Remote failure reply: %s"), rs
->buf
);
5657 case 'O': /* Console output. */
5658 remote_console_output (rs
->buf
+ 1);
5661 warning (_("Invalid remote reply: %s"), rs
->buf
);
5665 /* Acknowledge a pending stop reply that may have arrived in the
5667 if (pending_stop_reply
!= NULL
)
5668 remote_get_pending_stop_replies ();
5670 /* If indeed we noticed a stop reply, we're done. */
5671 stop_reply
= queued_stop_reply (ptid
);
5672 if (stop_reply
!= NULL
)
5673 return process_stop_reply (stop_reply
, status
);
5675 /* Still no event. If we're just polling for an event, then
5676 return to the event loop. */
5677 if (options
& TARGET_WNOHANG
)
5679 status
->kind
= TARGET_WAITKIND_IGNORE
;
5680 return minus_one_ptid
;
5683 /* Otherwise do a blocking wait. */
5684 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5685 1 /* forever */, &is_notif
);
5689 /* Wait until the remote machine stops, then return, storing status in
5690 STATUS just as `wait' would. */
5693 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5695 struct remote_state
*rs
= get_remote_state ();
5696 ptid_t event_ptid
= null_ptid
;
5698 struct stop_reply
*stop_reply
;
5702 status
->kind
= TARGET_WAITKIND_IGNORE
;
5703 status
->value
.integer
= 0;
5705 stop_reply
= queued_stop_reply (ptid
);
5706 if (stop_reply
!= NULL
)
5707 return process_stop_reply (stop_reply
, status
);
5709 if (rs
->cached_wait_status
)
5710 /* Use the cached wait status, but only once. */
5711 rs
->cached_wait_status
= 0;
5716 if (!target_is_async_p ())
5718 ofunc
= signal (SIGINT
, remote_interrupt
);
5719 /* If the user hit C-c before this packet, or between packets,
5720 pretend that it was hit right here. */
5721 if (check_quit_flag ())
5724 remote_interrupt (SIGINT
);
5728 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5729 _never_ wait for ever -> test on target_is_async_p().
5730 However, before we do that we need to ensure that the caller
5731 knows how to take the target into/out of async mode. */
5732 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5733 if (!target_is_async_p ())
5734 signal (SIGINT
, ofunc
);
5739 remote_stopped_by_watchpoint_p
= 0;
5741 /* We got something. */
5742 rs
->waiting_for_stop_reply
= 0;
5744 /* Assume that the target has acknowledged Ctrl-C unless we receive
5745 an 'F' or 'O' packet. */
5746 if (buf
[0] != 'F' && buf
[0] != 'O')
5747 rs
->ctrlc_pending_p
= 0;
5751 case 'E': /* Error of some sort. */
5752 /* We're out of sync with the target now. Did it continue or
5753 not? Not is more likely, so report a stop. */
5754 warning (_("Remote failure reply: %s"), buf
);
5755 status
->kind
= TARGET_WAITKIND_STOPPED
;
5756 status
->value
.sig
= GDB_SIGNAL_0
;
5758 case 'F': /* File-I/O request. */
5759 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5760 rs
->ctrlc_pending_p
= 0;
5762 case 'T': case 'S': case 'X': case 'W':
5764 struct stop_reply
*stop_reply
;
5765 struct cleanup
*old_chain
;
5767 stop_reply
= stop_reply_xmalloc ();
5768 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5769 remote_parse_stop_reply (buf
, stop_reply
);
5770 discard_cleanups (old_chain
);
5771 event_ptid
= process_stop_reply (stop_reply
, status
);
5774 case 'O': /* Console output. */
5775 remote_console_output (buf
+ 1);
5777 /* The target didn't really stop; keep waiting. */
5778 rs
->waiting_for_stop_reply
= 1;
5782 if (last_sent_signal
!= GDB_SIGNAL_0
)
5784 /* Zero length reply means that we tried 'S' or 'C' and the
5785 remote system doesn't support it. */
5786 target_terminal_ours_for_output ();
5788 ("Can't send signals to this remote system. %s not sent.\n",
5789 gdb_signal_to_name (last_sent_signal
));
5790 last_sent_signal
= GDB_SIGNAL_0
;
5791 target_terminal_inferior ();
5793 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5794 putpkt ((char *) buf
);
5796 /* We just told the target to resume, so a stop reply is in
5798 rs
->waiting_for_stop_reply
= 1;
5801 /* else fallthrough */
5803 warning (_("Invalid remote reply: %s"), buf
);
5805 rs
->waiting_for_stop_reply
= 1;
5809 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5811 /* Nothing interesting happened. If we're doing a non-blocking
5812 poll, we're done. Otherwise, go back to waiting. */
5813 if (options
& TARGET_WNOHANG
)
5814 return minus_one_ptid
;
5818 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5819 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5821 if (!ptid_equal (event_ptid
, null_ptid
))
5822 record_currthread (event_ptid
);
5824 event_ptid
= inferior_ptid
;
5827 /* A process exit. Invalidate our notion of current thread. */
5828 record_currthread (minus_one_ptid
);
5833 /* Wait until the remote machine stops, then return, storing status in
5834 STATUS just as `wait' would. */
5837 remote_wait (struct target_ops
*ops
,
5838 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5843 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5845 event_ptid
= remote_wait_as (ptid
, status
, options
);
5847 if (target_can_async_p ())
5849 /* If there are are events left in the queue tell the event loop
5851 if (stop_reply_queue
)
5852 mark_async_event_handler (remote_async_inferior_event_token
);
5858 /* Fetch a single register using a 'p' packet. */
5861 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5863 struct remote_state
*rs
= get_remote_state ();
5865 char regp
[MAX_REGISTER_SIZE
];
5868 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5871 if (reg
->pnum
== -1)
5876 p
+= hexnumstr (p
, reg
->pnum
);
5879 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5883 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5887 case PACKET_UNKNOWN
:
5890 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5891 gdbarch_register_name (get_regcache_arch (regcache
),
5896 /* If this register is unfetchable, tell the regcache. */
5899 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5903 /* Otherwise, parse and supply the value. */
5909 error (_("fetch_register_using_p: early buf termination"));
5911 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5914 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5918 /* Fetch the registers included in the target's 'g' packet. */
5921 send_g_packet (void)
5923 struct remote_state
*rs
= get_remote_state ();
5926 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
5927 remote_send (&rs
->buf
, &rs
->buf_size
);
5929 /* We can get out of synch in various cases. If the first character
5930 in the buffer is not a hex character, assume that has happened
5931 and try to fetch another packet to read. */
5932 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5933 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5934 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5935 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5938 fprintf_unfiltered (gdb_stdlog
,
5939 "Bad register packet; fetching a new packet\n");
5940 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5943 buf_len
= strlen (rs
->buf
);
5945 /* Sanity check the received packet. */
5946 if (buf_len
% 2 != 0)
5947 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5953 process_g_packet (struct regcache
*regcache
)
5955 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5956 struct remote_state
*rs
= get_remote_state ();
5957 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5962 buf_len
= strlen (rs
->buf
);
5964 /* Further sanity checks, with knowledge of the architecture. */
5965 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5966 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5968 /* Save the size of the packet sent to us by the target. It is used
5969 as a heuristic when determining the max size of packets that the
5970 target can safely receive. */
5971 if (rsa
->actual_register_packet_size
== 0)
5972 rsa
->actual_register_packet_size
= buf_len
;
5974 /* If this is smaller than we guessed the 'g' packet would be,
5975 update our records. A 'g' reply that doesn't include a register's
5976 value implies either that the register is not available, or that
5977 the 'p' packet must be used. */
5978 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5980 rsa
->sizeof_g_packet
= buf_len
/ 2;
5982 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5984 if (rsa
->regs
[i
].pnum
== -1)
5987 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5988 rsa
->regs
[i
].in_g_packet
= 0;
5990 rsa
->regs
[i
].in_g_packet
= 1;
5994 regs
= alloca (rsa
->sizeof_g_packet
);
5996 /* Unimplemented registers read as all bits zero. */
5997 memset (regs
, 0, rsa
->sizeof_g_packet
);
5999 /* Reply describes registers byte by byte, each byte encoded as two
6000 hex characters. Suck them all up, then supply them to the
6001 register cacheing/storage mechanism. */
6004 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6006 if (p
[0] == 0 || p
[1] == 0)
6007 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6008 internal_error (__FILE__
, __LINE__
,
6009 _("unexpected end of 'g' packet reply"));
6011 if (p
[0] == 'x' && p
[1] == 'x')
6012 regs
[i
] = 0; /* 'x' */
6014 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6018 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6020 struct packet_reg
*r
= &rsa
->regs
[i
];
6024 if (r
->offset
* 2 >= strlen (rs
->buf
))
6025 /* This shouldn't happen - we adjusted in_g_packet above. */
6026 internal_error (__FILE__
, __LINE__
,
6027 _("unexpected end of 'g' packet reply"));
6028 else if (rs
->buf
[r
->offset
* 2] == 'x')
6030 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6031 /* The register isn't available, mark it as such (at
6032 the same time setting the value to zero). */
6033 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6036 regcache_raw_supply (regcache
, r
->regnum
,
6043 fetch_registers_using_g (struct regcache
*regcache
)
6046 process_g_packet (regcache
);
6049 /* Make the remote selected traceframe match GDB's selected
6053 set_remote_traceframe (void)
6057 if (remote_traceframe_number
== get_traceframe_number ())
6060 /* Avoid recursion, remote_trace_find calls us again. */
6061 remote_traceframe_number
= get_traceframe_number ();
6063 newnum
= target_trace_find (tfind_number
,
6064 get_traceframe_number (), 0, 0, NULL
);
6066 /* Should not happen. If it does, all bets are off. */
6067 if (newnum
!= get_traceframe_number ())
6068 warning (_("could not set remote traceframe"));
6072 remote_fetch_registers (struct target_ops
*ops
,
6073 struct regcache
*regcache
, int regnum
)
6075 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6078 set_remote_traceframe ();
6079 set_general_thread (inferior_ptid
);
6083 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6085 gdb_assert (reg
!= NULL
);
6087 /* If this register might be in the 'g' packet, try that first -
6088 we are likely to read more than one register. If this is the
6089 first 'g' packet, we might be overly optimistic about its
6090 contents, so fall back to 'p'. */
6091 if (reg
->in_g_packet
)
6093 fetch_registers_using_g (regcache
);
6094 if (reg
->in_g_packet
)
6098 if (fetch_register_using_p (regcache
, reg
))
6101 /* This register is not available. */
6102 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6107 fetch_registers_using_g (regcache
);
6109 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6110 if (!rsa
->regs
[i
].in_g_packet
)
6111 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6113 /* This register is not available. */
6114 regcache_raw_supply (regcache
, i
, NULL
);
6118 /* Prepare to store registers. Since we may send them all (using a
6119 'G' request), we have to read out the ones we don't want to change
6123 remote_prepare_to_store (struct regcache
*regcache
)
6125 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6127 gdb_byte buf
[MAX_REGISTER_SIZE
];
6129 /* Make sure the entire registers array is valid. */
6130 switch (remote_protocol_packets
[PACKET_P
].support
)
6132 case PACKET_DISABLE
:
6133 case PACKET_SUPPORT_UNKNOWN
:
6134 /* Make sure all the necessary registers are cached. */
6135 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6136 if (rsa
->regs
[i
].in_g_packet
)
6137 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6144 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6145 packet was not recognized. */
6148 store_register_using_P (const struct regcache
*regcache
,
6149 struct packet_reg
*reg
)
6151 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6152 struct remote_state
*rs
= get_remote_state ();
6153 /* Try storing a single register. */
6154 char *buf
= rs
->buf
;
6155 gdb_byte regp
[MAX_REGISTER_SIZE
];
6158 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6161 if (reg
->pnum
== -1)
6164 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6165 p
= buf
+ strlen (buf
);
6166 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6167 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6169 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6171 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6176 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6177 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6178 case PACKET_UNKNOWN
:
6181 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6185 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6186 contents of the register cache buffer. FIXME: ignores errors. */
6189 store_registers_using_G (const struct regcache
*regcache
)
6191 struct remote_state
*rs
= get_remote_state ();
6192 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6196 /* Extract all the registers in the regcache copying them into a
6201 regs
= alloca (rsa
->sizeof_g_packet
);
6202 memset (regs
, 0, rsa
->sizeof_g_packet
);
6203 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6205 struct packet_reg
*r
= &rsa
->regs
[i
];
6208 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6212 /* Command describes registers byte by byte,
6213 each byte encoded as two hex characters. */
6216 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6218 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6220 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6221 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6222 error (_("Could not write registers; remote failure reply '%s'"),
6226 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6227 of the register cache buffer. FIXME: ignores errors. */
6230 remote_store_registers (struct target_ops
*ops
,
6231 struct regcache
*regcache
, int regnum
)
6233 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6236 set_remote_traceframe ();
6237 set_general_thread (inferior_ptid
);
6241 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6243 gdb_assert (reg
!= NULL
);
6245 /* Always prefer to store registers using the 'P' packet if
6246 possible; we often change only a small number of registers.
6247 Sometimes we change a larger number; we'd need help from a
6248 higher layer to know to use 'G'. */
6249 if (store_register_using_P (regcache
, reg
))
6252 /* For now, don't complain if we have no way to write the
6253 register. GDB loses track of unavailable registers too
6254 easily. Some day, this may be an error. We don't have
6255 any way to read the register, either... */
6256 if (!reg
->in_g_packet
)
6259 store_registers_using_G (regcache
);
6263 store_registers_using_G (regcache
);
6265 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6266 if (!rsa
->regs
[i
].in_g_packet
)
6267 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6268 /* See above for why we do not issue an error here. */
6273 /* Return the number of hex digits in num. */
6276 hexnumlen (ULONGEST num
)
6280 for (i
= 0; num
!= 0; i
++)
6286 /* Set BUF to the minimum number of hex digits representing NUM. */
6289 hexnumstr (char *buf
, ULONGEST num
)
6291 int len
= hexnumlen (num
);
6293 return hexnumnstr (buf
, num
, len
);
6297 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6300 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6306 for (i
= width
- 1; i
>= 0; i
--)
6308 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6315 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6318 remote_address_masked (CORE_ADDR addr
)
6320 unsigned int address_size
= remote_address_size
;
6322 /* If "remoteaddresssize" was not set, default to target address size. */
6324 address_size
= gdbarch_addr_bit (target_gdbarch ());
6326 if (address_size
> 0
6327 && address_size
< (sizeof (ULONGEST
) * 8))
6329 /* Only create a mask when that mask can safely be constructed
6330 in a ULONGEST variable. */
6333 mask
= (mask
<< address_size
) - 1;
6339 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6340 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6341 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6342 (which may be more than *OUT_LEN due to escape characters). The
6343 total number of bytes in the output buffer will be at most
6347 remote_escape_output (const gdb_byte
*buffer
, int len
,
6348 gdb_byte
*out_buf
, int *out_len
,
6351 int input_index
, output_index
;
6354 for (input_index
= 0; input_index
< len
; input_index
++)
6356 gdb_byte b
= buffer
[input_index
];
6358 if (b
== '$' || b
== '#' || b
== '}')
6360 /* These must be escaped. */
6361 if (output_index
+ 2 > out_maxlen
)
6363 out_buf
[output_index
++] = '}';
6364 out_buf
[output_index
++] = b
^ 0x20;
6368 if (output_index
+ 1 > out_maxlen
)
6370 out_buf
[output_index
++] = b
;
6374 *out_len
= input_index
;
6375 return output_index
;
6378 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6379 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6380 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6382 This function reverses remote_escape_output. It allows more
6383 escaped characters than that function does, in particular because
6384 '*' must be escaped to avoid the run-length encoding processing
6385 in reading packets. */
6388 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6389 gdb_byte
*out_buf
, int out_maxlen
)
6391 int input_index
, output_index
;
6396 for (input_index
= 0; input_index
< len
; input_index
++)
6398 gdb_byte b
= buffer
[input_index
];
6400 if (output_index
+ 1 > out_maxlen
)
6402 warning (_("Received too much data from remote target;"
6403 " ignoring overflow."));
6404 return output_index
;
6409 out_buf
[output_index
++] = b
^ 0x20;
6415 out_buf
[output_index
++] = b
;
6419 error (_("Unmatched escape character in target response."));
6421 return output_index
;
6424 /* Determine whether the remote target supports binary downloading.
6425 This is accomplished by sending a no-op memory write of zero length
6426 to the target at the specified address. It does not suffice to send
6427 the whole packet, since many stubs strip the eighth bit and
6428 subsequently compute a wrong checksum, which causes real havoc with
6431 NOTE: This can still lose if the serial line is not eight-bit
6432 clean. In cases like this, the user should clear "remote
6436 check_binary_download (CORE_ADDR addr
)
6438 struct remote_state
*rs
= get_remote_state ();
6440 switch (remote_protocol_packets
[PACKET_X
].support
)
6442 case PACKET_DISABLE
:
6446 case PACKET_SUPPORT_UNKNOWN
:
6452 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6454 p
+= hexnumstr (p
, (ULONGEST
) 0);
6458 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6459 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6461 if (rs
->buf
[0] == '\0')
6464 fprintf_unfiltered (gdb_stdlog
,
6465 "binary downloading NOT "
6466 "supported by target\n");
6467 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6472 fprintf_unfiltered (gdb_stdlog
,
6473 "binary downloading supported by target\n");
6474 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6481 /* Write memory data directly to the remote machine.
6482 This does not inform the data cache; the data cache uses this.
6483 HEADER is the starting part of the packet.
6484 MEMADDR is the address in the remote memory space.
6485 MYADDR is the address of the buffer in our space.
6486 LEN is the number of bytes.
6487 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6488 should send data as binary ('X'), or hex-encoded ('M').
6490 The function creates packet of the form
6491 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6493 where encoding of <DATA> is termined by PACKET_FORMAT.
6495 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6498 Returns the number of bytes transferred, or 0 (setting errno) for
6499 error. Only transfer a single packet. */
6502 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6503 const gdb_byte
*myaddr
, ssize_t len
,
6504 char packet_format
, int use_length
)
6506 struct remote_state
*rs
= get_remote_state ();
6516 if (packet_format
!= 'X' && packet_format
!= 'M')
6517 internal_error (__FILE__
, __LINE__
,
6518 _("remote_write_bytes_aux: bad packet format"));
6523 payload_size
= get_memory_write_packet_size ();
6525 /* The packet buffer will be large enough for the payload;
6526 get_memory_packet_size ensures this. */
6529 /* Compute the size of the actual payload by subtracting out the
6530 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6532 payload_size
-= strlen ("$,:#NN");
6534 /* The comma won't be used. */
6536 header_length
= strlen (header
);
6537 payload_size
-= header_length
;
6538 payload_size
-= hexnumlen (memaddr
);
6540 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6542 strcat (rs
->buf
, header
);
6543 p
= rs
->buf
+ strlen (header
);
6545 /* Compute a best guess of the number of bytes actually transfered. */
6546 if (packet_format
== 'X')
6548 /* Best guess at number of bytes that will fit. */
6549 todo
= min (len
, payload_size
);
6551 payload_size
-= hexnumlen (todo
);
6552 todo
= min (todo
, payload_size
);
6556 /* Num bytes that will fit. */
6557 todo
= min (len
, payload_size
/ 2);
6559 payload_size
-= hexnumlen (todo
);
6560 todo
= min (todo
, payload_size
/ 2);
6564 internal_error (__FILE__
, __LINE__
,
6565 _("minimum packet size too small to write data"));
6567 /* If we already need another packet, then try to align the end
6568 of this packet to a useful boundary. */
6569 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6570 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6572 /* Append "<memaddr>". */
6573 memaddr
= remote_address_masked (memaddr
);
6574 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6581 /* Append <len>. Retain the location/size of <len>. It may need to
6582 be adjusted once the packet body has been created. */
6584 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6592 /* Append the packet body. */
6593 if (packet_format
== 'X')
6595 /* Binary mode. Send target system values byte by byte, in
6596 increasing byte addresses. Only escape certain critical
6598 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6601 /* If not all TODO bytes fit, then we'll need another packet. Make
6602 a second try to keep the end of the packet aligned. Don't do
6603 this if the packet is tiny. */
6604 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6608 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6610 if (new_nr_bytes
!= nr_bytes
)
6611 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6616 p
+= payload_length
;
6617 if (use_length
&& nr_bytes
< todo
)
6619 /* Escape chars have filled up the buffer prematurely,
6620 and we have actually sent fewer bytes than planned.
6621 Fix-up the length field of the packet. Use the same
6622 number of characters as before. */
6623 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6624 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6629 /* Normal mode: Send target system values byte by byte, in
6630 increasing byte addresses. Each byte is encoded as a two hex
6632 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6636 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6637 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6639 if (rs
->buf
[0] == 'E')
6641 /* There is no correspondance between what the remote protocol
6642 uses for errors and errno codes. We would like a cleaner way
6643 of representing errors (big enough to include errno codes,
6644 bfd_error codes, and others). But for now just return EIO. */
6649 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6650 fewer bytes than we'd planned. */
6654 /* Write memory data directly to the remote machine.
6655 This does not inform the data cache; the data cache uses this.
6656 MEMADDR is the address in the remote memory space.
6657 MYADDR is the address of the buffer in our space.
6658 LEN is the number of bytes.
6660 Returns number of bytes transferred, or 0 (setting errno) for
6661 error. Only transfer a single packet. */
6664 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6666 char *packet_format
= 0;
6668 /* Check whether the target supports binary download. */
6669 check_binary_download (memaddr
);
6671 switch (remote_protocol_packets
[PACKET_X
].support
)
6674 packet_format
= "X";
6676 case PACKET_DISABLE
:
6677 packet_format
= "M";
6679 case PACKET_SUPPORT_UNKNOWN
:
6680 internal_error (__FILE__
, __LINE__
,
6681 _("remote_write_bytes: bad internal state"));
6683 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6686 return remote_write_bytes_aux (packet_format
,
6687 memaddr
, myaddr
, len
, packet_format
[0], 1);
6690 /* Read memory data directly from the remote machine.
6691 This does not use the data cache; the data cache uses this.
6692 MEMADDR is the address in the remote memory space.
6693 MYADDR is the address of the buffer in our space.
6694 LEN is the number of bytes.
6696 Returns number of bytes transferred, or 0 for error. */
6699 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6701 struct remote_state
*rs
= get_remote_state ();
6702 int max_buf_size
; /* Max size of packet output buffer. */
6710 max_buf_size
= get_memory_read_packet_size ();
6711 /* The packet buffer will be large enough for the payload;
6712 get_memory_packet_size ensures this. */
6714 /* Number if bytes that will fit. */
6715 todo
= min (len
, max_buf_size
/ 2);
6717 /* Construct "m"<memaddr>","<len>". */
6718 memaddr
= remote_address_masked (memaddr
);
6721 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6723 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6726 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6727 if (rs
->buf
[0] == 'E'
6728 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6729 && rs
->buf
[3] == '\0')
6731 /* There is no correspondance between what the remote protocol
6732 uses for errors and errno codes. We would like a cleaner way
6733 of representing errors (big enough to include errno codes,
6734 bfd_error codes, and others). But for now just return
6739 /* Reply describes memory byte by byte, each byte encoded as two hex
6742 i
= hex2bin (p
, myaddr
, todo
);
6743 /* Return what we have. Let higher layers handle partial reads. */
6748 /* Remote notification handler. */
6751 handle_notification (char *buf
)
6753 if (strncmp (buf
, "Stop:", 5) == 0)
6755 if (pending_stop_reply
)
6757 /* We've already parsed the in-flight stop-reply, but the
6758 stub for some reason thought we didn't, possibly due to
6759 timeout on its side. Just ignore it. */
6761 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6765 struct cleanup
*old_chain
;
6766 struct stop_reply
*reply
= stop_reply_xmalloc ();
6768 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6770 remote_parse_stop_reply (buf
+ 5, reply
);
6772 discard_cleanups (old_chain
);
6774 /* Be careful to only set it after parsing, since an error
6775 may be thrown then. */
6776 pending_stop_reply
= reply
;
6778 /* Notify the event loop there's a stop reply to acknowledge
6779 and that there may be more events to fetch. */
6780 mark_async_event_handler (remote_async_get_pending_events_token
);
6783 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6788 /* We ignore notifications we don't recognize, for compatibility
6789 with newer stubs. */
6794 /* Read or write LEN bytes from inferior memory at MEMADDR,
6795 transferring to or from debugger address BUFFER. Write to inferior
6796 if SHOULD_WRITE is nonzero. Returns length of data written or
6797 read; 0 for error. TARGET is unused. */
6800 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6801 int should_write
, struct mem_attrib
*attrib
,
6802 struct target_ops
*target
)
6806 set_remote_traceframe ();
6807 set_general_thread (inferior_ptid
);
6810 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6812 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6817 /* Sends a packet with content determined by the printf format string
6818 FORMAT and the remaining arguments, then gets the reply. Returns
6819 whether the packet was a success, a failure, or unknown. */
6821 static enum packet_result
6822 remote_send_printf (const char *format
, ...)
6824 struct remote_state
*rs
= get_remote_state ();
6825 int max_size
= get_remote_packet_size ();
6828 va_start (ap
, format
);
6831 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6832 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6834 if (putpkt (rs
->buf
) < 0)
6835 error (_("Communication problem with target."));
6838 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6840 return packet_check_result (rs
->buf
);
6844 restore_remote_timeout (void *p
)
6846 int value
= *(int *)p
;
6848 remote_timeout
= value
;
6851 /* Flash writing can take quite some time. We'll set
6852 effectively infinite timeout for flash operations.
6853 In future, we'll need to decide on a better approach. */
6854 static const int remote_flash_timeout
= 1000;
6857 remote_flash_erase (struct target_ops
*ops
,
6858 ULONGEST address
, LONGEST length
)
6860 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6861 int saved_remote_timeout
= remote_timeout
;
6862 enum packet_result ret
;
6863 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6864 &saved_remote_timeout
);
6866 remote_timeout
= remote_flash_timeout
;
6868 ret
= remote_send_printf ("vFlashErase:%s,%s",
6869 phex (address
, addr_size
),
6873 case PACKET_UNKNOWN
:
6874 error (_("Remote target does not support flash erase"));
6876 error (_("Error erasing flash with vFlashErase packet"));
6881 do_cleanups (back_to
);
6885 remote_flash_write (struct target_ops
*ops
,
6886 ULONGEST address
, LONGEST length
,
6887 const gdb_byte
*data
)
6889 int saved_remote_timeout
= remote_timeout
;
6891 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6892 &saved_remote_timeout
);
6894 remote_timeout
= remote_flash_timeout
;
6895 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6896 do_cleanups (back_to
);
6902 remote_flash_done (struct target_ops
*ops
)
6904 int saved_remote_timeout
= remote_timeout
;
6906 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6907 &saved_remote_timeout
);
6909 remote_timeout
= remote_flash_timeout
;
6910 ret
= remote_send_printf ("vFlashDone");
6911 do_cleanups (back_to
);
6915 case PACKET_UNKNOWN
:
6916 error (_("Remote target does not support vFlashDone"));
6918 error (_("Error finishing flash operation"));
6925 remote_files_info (struct target_ops
*ignore
)
6927 puts_filtered ("Debugging a target over a serial line.\n");
6930 /* Stuff for dealing with the packets which are part of this protocol.
6931 See comment at top of file for details. */
6933 /* Read a single character from the remote end. */
6936 readchar (int timeout
)
6940 ch
= serial_readchar (remote_desc
, timeout
);
6945 switch ((enum serial_rc
) ch
)
6949 error (_("Remote connection closed"));
6953 perror_with_name (_("Remote communication error. "
6954 "Target disconnected."));
6956 case SERIAL_TIMEOUT
:
6962 /* Send the command in *BUF to the remote machine, and read the reply
6963 into *BUF. Report an error if we get an error reply. Resize
6964 *BUF using xrealloc if necessary to hold the result, and update
6968 remote_send (char **buf
,
6972 getpkt (buf
, sizeof_buf
, 0);
6974 if ((*buf
)[0] == 'E')
6975 error (_("Remote failure reply: %s"), *buf
);
6978 /* Return a pointer to an xmalloc'ed string representing an escaped
6979 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6980 etc. The caller is responsible for releasing the returned
6984 escape_buffer (const char *buf
, int n
)
6986 struct cleanup
*old_chain
;
6987 struct ui_file
*stb
;
6990 stb
= mem_fileopen ();
6991 old_chain
= make_cleanup_ui_file_delete (stb
);
6993 fputstrn_unfiltered (buf
, n
, 0, stb
);
6994 str
= ui_file_xstrdup (stb
, NULL
);
6995 do_cleanups (old_chain
);
6999 /* Display a null-terminated packet on stdout, for debugging, using C
7003 print_packet (char *buf
)
7005 puts_filtered ("\"");
7006 fputstr_filtered (buf
, '"', gdb_stdout
);
7007 puts_filtered ("\"");
7013 return putpkt_binary (buf
, strlen (buf
));
7016 /* Send a packet to the remote machine, with error checking. The data
7017 of the packet is in BUF. The string in BUF can be at most
7018 get_remote_packet_size () - 5 to account for the $, # and checksum,
7019 and for a possible /0 if we are debugging (remote_debug) and want
7020 to print the sent packet as a string. */
7023 putpkt_binary (char *buf
, int cnt
)
7025 struct remote_state
*rs
= get_remote_state ();
7027 unsigned char csum
= 0;
7028 char *buf2
= alloca (cnt
+ 6);
7035 /* Catch cases like trying to read memory or listing threads while
7036 we're waiting for a stop reply. The remote server wouldn't be
7037 ready to handle this request, so we'd hang and timeout. We don't
7038 have to worry about this in synchronous mode, because in that
7039 case it's not possible to issue a command while the target is
7040 running. This is not a problem in non-stop mode, because in that
7041 case, the stub is always ready to process serial input. */
7042 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7043 error (_("Cannot execute this command while the target is running."));
7045 /* We're sending out a new packet. Make sure we don't look at a
7046 stale cached response. */
7047 rs
->cached_wait_status
= 0;
7049 /* Copy the packet into buffer BUF2, encapsulating it
7050 and giving it a checksum. */
7055 for (i
= 0; i
< cnt
; i
++)
7061 *p
++ = tohex ((csum
>> 4) & 0xf);
7062 *p
++ = tohex (csum
& 0xf);
7064 /* Send it over and over until we get a positive ack. */
7068 int started_error_output
= 0;
7072 struct cleanup
*old_chain
;
7076 str
= escape_buffer (buf2
, p
- buf2
);
7077 old_chain
= make_cleanup (xfree
, str
);
7078 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7079 gdb_flush (gdb_stdlog
);
7080 do_cleanups (old_chain
);
7082 if (serial_write (remote_desc
, buf2
, p
- buf2
))
7083 perror_with_name (_("putpkt: write failed"));
7085 /* If this is a no acks version of the remote protocol, send the
7086 packet and move on. */
7090 /* Read until either a timeout occurs (-2) or '+' is read.
7091 Handle any notification that arrives in the mean time. */
7094 ch
= readchar (remote_timeout
);
7102 case SERIAL_TIMEOUT
:
7105 if (started_error_output
)
7107 putchar_unfiltered ('\n');
7108 started_error_output
= 0;
7117 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7121 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7123 case SERIAL_TIMEOUT
:
7127 break; /* Retransmit buffer. */
7131 fprintf_unfiltered (gdb_stdlog
,
7132 "Packet instead of Ack, ignoring it\n");
7133 /* It's probably an old response sent because an ACK
7134 was lost. Gobble up the packet and ack it so it
7135 doesn't get retransmitted when we resend this
7138 serial_write (remote_desc
, "+", 1);
7139 continue; /* Now, go look for +. */
7146 /* If we got a notification, handle it, and go back to looking
7148 /* We've found the start of a notification. Now
7149 collect the data. */
7150 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7155 struct cleanup
*old_chain
;
7158 str
= escape_buffer (rs
->buf
, val
);
7159 old_chain
= make_cleanup (xfree
, str
);
7160 fprintf_unfiltered (gdb_stdlog
,
7161 " Notification received: %s\n",
7163 do_cleanups (old_chain
);
7165 handle_notification (rs
->buf
);
7166 /* We're in sync now, rewait for the ack. */
7173 if (!started_error_output
)
7175 started_error_output
= 1;
7176 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7178 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7179 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7188 if (!started_error_output
)
7190 started_error_output
= 1;
7191 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7193 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7197 break; /* Here to retransmit. */
7201 /* This is wrong. If doing a long backtrace, the user should be
7202 able to get out next time we call QUIT, without anything as
7203 violent as interrupt_query. If we want to provide a way out of
7204 here without getting to the next QUIT, it should be based on
7205 hitting ^C twice as in remote_wait. */
7216 /* Come here after finding the start of a frame when we expected an
7217 ack. Do our best to discard the rest of this packet. */
7226 c
= readchar (remote_timeout
);
7229 case SERIAL_TIMEOUT
:
7230 /* Nothing we can do. */
7233 /* Discard the two bytes of checksum and stop. */
7234 c
= readchar (remote_timeout
);
7236 c
= readchar (remote_timeout
);
7239 case '*': /* Run length encoding. */
7240 /* Discard the repeat count. */
7241 c
= readchar (remote_timeout
);
7246 /* A regular character. */
7252 /* Come here after finding the start of the frame. Collect the rest
7253 into *BUF, verifying the checksum, length, and handling run-length
7254 compression. NUL terminate the buffer. If there is not enough room,
7255 expand *BUF using xrealloc.
7257 Returns -1 on error, number of characters in buffer (ignoring the
7258 trailing NULL) on success. (could be extended to return one of the
7259 SERIAL status indications). */
7262 read_frame (char **buf_p
,
7269 struct remote_state
*rs
= get_remote_state ();
7276 c
= readchar (remote_timeout
);
7279 case SERIAL_TIMEOUT
:
7281 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7285 fputs_filtered ("Saw new packet start in middle of old one\n",
7287 return -1; /* Start a new packet, count retries. */
7290 unsigned char pktcsum
;
7296 check_0
= readchar (remote_timeout
);
7298 check_1
= readchar (remote_timeout
);
7300 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7303 fputs_filtered ("Timeout in checksum, retrying\n",
7307 else if (check_0
< 0 || check_1
< 0)
7310 fputs_filtered ("Communication error in checksum\n",
7315 /* Don't recompute the checksum; with no ack packets we
7316 don't have any way to indicate a packet retransmission
7321 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7322 if (csum
== pktcsum
)
7327 struct cleanup
*old_chain
;
7330 str
= escape_buffer (buf
, bc
);
7331 old_chain
= make_cleanup (xfree
, str
);
7332 fprintf_unfiltered (gdb_stdlog
,
7333 "Bad checksum, sentsum=0x%x, "
7334 "csum=0x%x, buf=%s\n",
7335 pktcsum
, csum
, str
);
7336 do_cleanups (old_chain
);
7338 /* Number of characters in buffer ignoring trailing
7342 case '*': /* Run length encoding. */
7347 c
= readchar (remote_timeout
);
7349 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7351 /* The character before ``*'' is repeated. */
7353 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7355 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7357 /* Make some more room in the buffer. */
7358 *sizeof_buf
+= repeat
;
7359 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7363 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7369 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7373 if (bc
>= *sizeof_buf
- 1)
7375 /* Make some more room in the buffer. */
7377 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7388 /* Read a packet from the remote machine, with error checking, and
7389 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7390 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7391 rather than timing out; this is used (in synchronous mode) to wait
7392 for a target that is is executing user code to stop. */
7393 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7394 don't have to change all the calls to getpkt to deal with the
7395 return value, because at the moment I don't know what the right
7396 thing to do it for those. */
7404 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7408 /* Read a packet from the remote machine, with error checking, and
7409 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7410 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7411 rather than timing out; this is used (in synchronous mode) to wait
7412 for a target that is is executing user code to stop. If FOREVER ==
7413 0, this function is allowed to time out gracefully and return an
7414 indication of this to the caller. Otherwise return the number of
7415 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7416 enough reason to return to the caller. *IS_NOTIF is an output
7417 boolean that indicates whether *BUF holds a notification or not
7418 (a regular packet). */
7421 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7422 int expecting_notif
, int *is_notif
)
7424 struct remote_state
*rs
= get_remote_state ();
7430 /* We're reading a new response. Make sure we don't look at a
7431 previously cached response. */
7432 rs
->cached_wait_status
= 0;
7434 strcpy (*buf
, "timeout");
7437 timeout
= watchdog
> 0 ? watchdog
: -1;
7438 else if (expecting_notif
)
7439 timeout
= 0; /* There should already be a char in the buffer. If
7442 timeout
= remote_timeout
;
7446 /* Process any number of notifications, and then return when
7450 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7452 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7454 /* This can loop forever if the remote side sends us
7455 characters continuously, but if it pauses, we'll get
7456 SERIAL_TIMEOUT from readchar because of timeout. Then
7457 we'll count that as a retry.
7459 Note that even when forever is set, we will only wait
7460 forever prior to the start of a packet. After that, we
7461 expect characters to arrive at a brisk pace. They should
7462 show up within remote_timeout intervals. */
7464 c
= readchar (timeout
);
7465 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7467 if (c
== SERIAL_TIMEOUT
)
7469 if (expecting_notif
)
7470 return -1; /* Don't complain, it's normal to not get
7471 anything in this case. */
7473 if (forever
) /* Watchdog went off? Kill the target. */
7477 error (_("Watchdog timeout has expired. Target detached."));
7480 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7484 /* We've found the start of a packet or notification.
7485 Now collect the data. */
7486 val
= read_frame (buf
, sizeof_buf
);
7491 serial_write (remote_desc
, "-", 1);
7494 if (tries
> MAX_TRIES
)
7496 /* We have tried hard enough, and just can't receive the
7497 packet/notification. Give up. */
7498 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7500 /* Skip the ack char if we're in no-ack mode. */
7501 if (!rs
->noack_mode
)
7502 serial_write (remote_desc
, "+", 1);
7506 /* If we got an ordinary packet, return that to our caller. */
7511 struct cleanup
*old_chain
;
7514 str
= escape_buffer (*buf
, val
);
7515 old_chain
= make_cleanup (xfree
, str
);
7516 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7517 do_cleanups (old_chain
);
7520 /* Skip the ack char if we're in no-ack mode. */
7521 if (!rs
->noack_mode
)
7522 serial_write (remote_desc
, "+", 1);
7523 if (is_notif
!= NULL
)
7528 /* If we got a notification, handle it, and go back to looking
7532 gdb_assert (c
== '%');
7536 struct cleanup
*old_chain
;
7539 str
= escape_buffer (*buf
, val
);
7540 old_chain
= make_cleanup (xfree
, str
);
7541 fprintf_unfiltered (gdb_stdlog
,
7542 " Notification received: %s\n",
7544 do_cleanups (old_chain
);
7546 if (is_notif
!= NULL
)
7549 handle_notification (*buf
);
7551 /* Notifications require no acknowledgement. */
7553 if (expecting_notif
)
7560 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7562 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7566 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7569 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7574 /* A helper function that just calls putpkt; for type correctness. */
7577 putpkt_for_catch_errors (void *arg
)
7579 return putpkt (arg
);
7583 remote_kill (struct target_ops
*ops
)
7585 /* Use catch_errors so the user can quit from gdb even when we
7586 aren't on speaking terms with the remote system. */
7587 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7589 /* Don't wait for it to die. I'm not really sure it matters whether
7590 we do or not. For the existing stubs, kill is a noop. */
7591 target_mourn_inferior ();
7595 remote_vkill (int pid
, struct remote_state
*rs
)
7597 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7600 /* Tell the remote target to detach. */
7601 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7603 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7605 if (packet_ok (rs
->buf
,
7606 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7608 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7615 extended_remote_kill (struct target_ops
*ops
)
7618 int pid
= ptid_get_pid (inferior_ptid
);
7619 struct remote_state
*rs
= get_remote_state ();
7621 res
= remote_vkill (pid
, rs
);
7622 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7624 /* Don't try 'k' on a multi-process aware stub -- it has no way
7625 to specify the pid. */
7629 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7630 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7633 /* Don't wait for it to die. I'm not really sure it matters whether
7634 we do or not. For the existing stubs, kill is a noop. */
7640 error (_("Can't kill process"));
7642 target_mourn_inferior ();
7646 remote_mourn (struct target_ops
*ops
)
7648 remote_mourn_1 (ops
);
7651 /* Worker function for remote_mourn. */
7653 remote_mourn_1 (struct target_ops
*target
)
7655 unpush_target (target
);
7657 /* remote_close takes care of doing most of the clean up. */
7658 generic_mourn_inferior ();
7662 extended_remote_mourn_1 (struct target_ops
*target
)
7664 struct remote_state
*rs
= get_remote_state ();
7666 /* In case we got here due to an error, but we're going to stay
7668 rs
->waiting_for_stop_reply
= 0;
7670 /* If the current general thread belonged to the process we just
7671 detached from or has exited, the remote side current general
7672 thread becomes undefined. Considering a case like this:
7674 - We just got here due to a detach.
7675 - The process that we're detaching from happens to immediately
7676 report a global breakpoint being hit in non-stop mode, in the
7677 same thread we had selected before.
7678 - GDB attaches to this process again.
7679 - This event happens to be the next event we handle.
7681 GDB would consider that the current general thread didn't need to
7682 be set on the stub side (with Hg), since for all it knew,
7683 GENERAL_THREAD hadn't changed.
7685 Notice that although in all-stop mode, the remote server always
7686 sets the current thread to the thread reporting the stop event,
7687 that doesn't happen in non-stop mode; in non-stop, the stub *must
7688 not* change the current thread when reporting a breakpoint hit,
7689 due to the decoupling of event reporting and event handling.
7691 To keep things simple, we always invalidate our notion of the
7693 record_currthread (minus_one_ptid
);
7695 /* Unlike "target remote", we do not want to unpush the target; then
7696 the next time the user says "run", we won't be connected. */
7698 /* Call common code to mark the inferior as not running. */
7699 generic_mourn_inferior ();
7701 if (!have_inferiors ())
7703 if (!remote_multi_process_p (rs
))
7705 /* Check whether the target is running now - some remote stubs
7706 automatically restart after kill. */
7708 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7710 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7712 /* Assume that the target has been restarted. Set
7713 inferior_ptid so that bits of core GDB realizes
7714 there's something here, e.g., so that the user can
7715 say "kill" again. */
7716 inferior_ptid
= magic_null_ptid
;
7723 extended_remote_mourn (struct target_ops
*ops
)
7725 extended_remote_mourn_1 (ops
);
7729 extended_remote_supports_disable_randomization (void)
7731 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7736 extended_remote_disable_randomization (int val
)
7738 struct remote_state
*rs
= get_remote_state ();
7741 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7744 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7746 error (_("Target does not support QDisableRandomization."));
7747 if (strcmp (reply
, "OK") != 0)
7748 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7752 extended_remote_run (char *args
)
7754 struct remote_state
*rs
= get_remote_state ();
7757 /* If the user has disabled vRun support, or we have detected that
7758 support is not available, do not try it. */
7759 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7762 strcpy (rs
->buf
, "vRun;");
7763 len
= strlen (rs
->buf
);
7765 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7766 error (_("Remote file name too long for run packet"));
7767 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7769 gdb_assert (args
!= NULL
);
7772 struct cleanup
*back_to
;
7776 argv
= gdb_buildargv (args
);
7777 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7778 for (i
= 0; argv
[i
] != NULL
; i
++)
7780 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7781 error (_("Argument list too long for run packet"));
7782 rs
->buf
[len
++] = ';';
7783 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7785 do_cleanups (back_to
);
7788 rs
->buf
[len
++] = '\0';
7791 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7793 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7795 /* We have a wait response; we don't need it, though. All is well. */
7798 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7799 /* It wasn't disabled before, but it is now. */
7803 if (remote_exec_file
[0] == '\0')
7804 error (_("Running the default executable on the remote target failed; "
7805 "try \"set remote exec-file\"?"));
7807 error (_("Running \"%s\" on the remote target failed"),
7812 /* In the extended protocol we want to be able to do things like
7813 "run" and have them basically work as expected. So we need
7814 a special create_inferior function. We support changing the
7815 executable file and the command line arguments, but not the
7819 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7820 char **env
, int from_tty
)
7822 /* If running asynchronously, register the target file descriptor
7823 with the event loop. */
7824 if (target_can_async_p ())
7825 target_async (inferior_event_handler
, 0);
7827 /* Disable address space randomization if requested (and supported). */
7828 if (extended_remote_supports_disable_randomization ())
7829 extended_remote_disable_randomization (disable_randomization
);
7831 /* Now restart the remote server. */
7832 if (extended_remote_run (args
) == -1)
7834 /* vRun was not supported. Fail if we need it to do what the
7836 if (remote_exec_file
[0])
7837 error (_("Remote target does not support \"set remote exec-file\""));
7839 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7841 /* Fall back to "R". */
7842 extended_remote_restart ();
7845 if (!have_inferiors ())
7847 /* Clean up from the last time we ran, before we mark the target
7848 running again. This will mark breakpoints uninserted, and
7849 get_offsets may insert breakpoints. */
7850 init_thread_list ();
7851 init_wait_for_inferior ();
7854 add_current_inferior_and_thread ();
7856 /* Get updated offsets, if the stub uses qOffsets. */
7861 extended_remote_create_inferior (struct target_ops
*ops
,
7862 char *exec_file
, char *args
,
7863 char **env
, int from_tty
)
7865 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7869 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7870 the list of conditions (in agent expression bytecode format), if any, the
7871 target needs to evaluate. The output is placed into the packet buffer
7872 started from BUF and ended at BUF_END. */
7875 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7876 struct bp_target_info
*bp_tgt
, char *buf
,
7879 struct agent_expr
*aexpr
= NULL
;
7882 char *buf_start
= buf
;
7884 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7887 buf
+= strlen (buf
);
7888 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
7891 /* Send conditions to the target and free the vector. */
7893 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
7896 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
7897 buf
+= strlen (buf
);
7898 for (i
= 0; i
< aexpr
->len
; ++i
)
7899 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7903 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
7908 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
7909 struct bp_target_info
*bp_tgt
, char *buf
)
7911 struct agent_expr
*aexpr
= NULL
;
7914 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
7917 buf
+= strlen (buf
);
7919 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
7920 buf
+= strlen (buf
);
7922 /* Concatenate all the agent expressions that are commands into the
7925 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
7928 sprintf (buf
, "X%x,", aexpr
->len
);
7929 buf
+= strlen (buf
);
7930 for (i
= 0; i
< aexpr
->len
; ++i
)
7931 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7935 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
7938 /* Insert a breakpoint. On targets that have software breakpoint
7939 support, we ask the remote target to do the work; on targets
7940 which don't, we insert a traditional memory breakpoint. */
7943 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7944 struct bp_target_info
*bp_tgt
)
7946 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7947 If it succeeds, then set the support to PACKET_ENABLE. If it
7948 fails, and the user has explicitly requested the Z support then
7949 report an error, otherwise, mark it disabled and go on. */
7951 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7953 CORE_ADDR addr
= bp_tgt
->placed_address
;
7954 struct remote_state
*rs
;
7957 struct condition_list
*cond
= NULL
;
7959 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7961 rs
= get_remote_state ();
7963 endbuf
= rs
->buf
+ get_remote_packet_size ();
7968 addr
= (ULONGEST
) remote_address_masked (addr
);
7969 p
+= hexnumstr (p
, addr
);
7970 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
7972 if (remote_supports_cond_breakpoints ())
7973 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
7975 if (remote_can_run_breakpoint_commands ())
7976 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
7979 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7981 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7986 bp_tgt
->placed_address
= addr
;
7987 bp_tgt
->placed_size
= bpsize
;
7989 case PACKET_UNKNOWN
:
7994 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7998 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7999 struct bp_target_info
*bp_tgt
)
8001 CORE_ADDR addr
= bp_tgt
->placed_address
;
8002 struct remote_state
*rs
= get_remote_state ();
8004 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8007 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8013 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8014 p
+= hexnumstr (p
, addr
);
8015 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8018 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8020 return (rs
->buf
[0] == 'E');
8023 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8027 watchpoint_to_Z_packet (int type
)
8032 return Z_PACKET_WRITE_WP
;
8035 return Z_PACKET_READ_WP
;
8038 return Z_PACKET_ACCESS_WP
;
8041 internal_error (__FILE__
, __LINE__
,
8042 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8047 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8048 struct expression
*cond
)
8050 struct remote_state
*rs
= get_remote_state ();
8051 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8053 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8055 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8058 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8059 p
= strchr (rs
->buf
, '\0');
8060 addr
= remote_address_masked (addr
);
8061 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8062 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8065 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8067 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8071 case PACKET_UNKNOWN
:
8076 internal_error (__FILE__
, __LINE__
,
8077 _("remote_insert_watchpoint: reached end of function"));
8081 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8082 CORE_ADDR start
, int length
)
8084 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8086 return diff
< length
;
8091 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8092 struct expression
*cond
)
8094 struct remote_state
*rs
= get_remote_state ();
8095 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8097 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8099 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8102 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8103 p
= strchr (rs
->buf
, '\0');
8104 addr
= remote_address_masked (addr
);
8105 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8106 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8108 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8110 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8113 case PACKET_UNKNOWN
:
8118 internal_error (__FILE__
, __LINE__
,
8119 _("remote_remove_watchpoint: reached end of function"));
8123 int remote_hw_watchpoint_limit
= -1;
8124 int remote_hw_watchpoint_length_limit
= -1;
8125 int remote_hw_breakpoint_limit
= -1;
8128 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8130 if (remote_hw_watchpoint_length_limit
== 0)
8132 else if (remote_hw_watchpoint_length_limit
< 0)
8134 else if (len
<= remote_hw_watchpoint_length_limit
)
8141 remote_check_watch_resources (int type
, int cnt
, int ot
)
8143 if (type
== bp_hardware_breakpoint
)
8145 if (remote_hw_breakpoint_limit
== 0)
8147 else if (remote_hw_breakpoint_limit
< 0)
8149 else if (cnt
<= remote_hw_breakpoint_limit
)
8154 if (remote_hw_watchpoint_limit
== 0)
8156 else if (remote_hw_watchpoint_limit
< 0)
8160 else if (cnt
<= remote_hw_watchpoint_limit
)
8167 remote_stopped_by_watchpoint (void)
8169 return remote_stopped_by_watchpoint_p
;
8173 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8177 if (remote_stopped_by_watchpoint ())
8179 *addr_p
= remote_watch_data_address
;
8188 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8189 struct bp_target_info
*bp_tgt
)
8192 struct remote_state
*rs
;
8196 /* The length field should be set to the size of a breakpoint
8197 instruction, even though we aren't inserting one ourselves. */
8199 gdbarch_remote_breakpoint_from_pc
8200 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8202 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8205 rs
= get_remote_state ();
8207 endbuf
= rs
->buf
+ get_remote_packet_size ();
8213 addr
= remote_address_masked (bp_tgt
->placed_address
);
8214 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8215 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8217 if (remote_supports_cond_breakpoints ())
8218 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8220 if (remote_can_run_breakpoint_commands ())
8221 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8224 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8226 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8229 if (rs
->buf
[1] == '.')
8231 message
= strchr (rs
->buf
+ 2, '.');
8233 error (_("Remote failure reply: %s"), message
+ 1);
8236 case PACKET_UNKNOWN
:
8241 internal_error (__FILE__
, __LINE__
,
8242 _("remote_insert_hw_breakpoint: reached end of function"));
8247 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8248 struct bp_target_info
*bp_tgt
)
8251 struct remote_state
*rs
= get_remote_state ();
8253 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8255 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8262 addr
= remote_address_masked (bp_tgt
->placed_address
);
8263 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8264 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8267 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8269 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8272 case PACKET_UNKNOWN
:
8277 internal_error (__FILE__
, __LINE__
,
8278 _("remote_remove_hw_breakpoint: reached end of function"));
8281 /* Table used by the crc32 function to calcuate the checksum. */
8283 static unsigned long crc32_table
[256] =
8286 static unsigned long
8287 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8289 if (!crc32_table
[1])
8291 /* Initialize the CRC table and the decoding table. */
8295 for (i
= 0; i
< 256; i
++)
8297 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8298 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8305 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8311 /* Verify memory using the "qCRC:" request. */
8314 remote_verify_memory (struct target_ops
*ops
,
8315 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8317 struct remote_state
*rs
= get_remote_state ();
8318 unsigned long host_crc
, target_crc
;
8321 /* FIXME: assumes lma can fit into long. */
8322 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8323 (long) lma
, (long) size
);
8326 /* Be clever; compute the host_crc before waiting for target
8328 host_crc
= crc32 (data
, size
, 0xffffffff);
8330 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8331 if (rs
->buf
[0] == 'E')
8334 if (rs
->buf
[0] != 'C')
8335 error (_("remote target does not support this operation"));
8337 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8338 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8340 return (host_crc
== target_crc
);
8343 /* compare-sections command
8345 With no arguments, compares each loadable section in the exec bfd
8346 with the same memory range on the target, and reports mismatches.
8347 Useful for verifying the image on the target against the exec file. */
8350 compare_sections_command (char *args
, int from_tty
)
8353 struct cleanup
*old_chain
;
8355 const char *sectname
;
8363 error (_("command cannot be used without an exec file"));
8365 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8367 if (!(s
->flags
& SEC_LOAD
))
8368 continue; /* Skip non-loadable section. */
8370 size
= bfd_get_section_size (s
);
8372 continue; /* Skip zero-length section. */
8374 sectname
= bfd_get_section_name (exec_bfd
, s
);
8375 if (args
&& strcmp (args
, sectname
) != 0)
8376 continue; /* Not the section selected by user. */
8378 matched
= 1; /* Do this section. */
8381 sectdata
= xmalloc (size
);
8382 old_chain
= make_cleanup (xfree
, sectdata
);
8383 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8385 res
= target_verify_memory (sectdata
, lma
, size
);
8388 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8389 paddress (target_gdbarch (), lma
),
8390 paddress (target_gdbarch (), lma
+ size
));
8392 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8393 paddress (target_gdbarch (), lma
),
8394 paddress (target_gdbarch (), lma
+ size
));
8396 printf_filtered ("matched.\n");
8399 printf_filtered ("MIS-MATCHED!\n");
8403 do_cleanups (old_chain
);
8406 warning (_("One or more sections of the remote executable does not match\n\
8407 the loaded file\n"));
8408 if (args
&& !matched
)
8409 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8412 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8413 into remote target. The number of bytes written to the remote
8414 target is returned, or -1 for error. */
8417 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8418 const char *annex
, const gdb_byte
*writebuf
,
8419 ULONGEST offset
, LONGEST len
,
8420 struct packet_config
*packet
)
8424 struct remote_state
*rs
= get_remote_state ();
8425 int max_size
= get_memory_write_packet_size ();
8427 if (packet
->support
== PACKET_DISABLE
)
8430 /* Insert header. */
8431 i
= snprintf (rs
->buf
, max_size
,
8432 "qXfer:%s:write:%s:%s:",
8433 object_name
, annex
? annex
: "",
8434 phex_nz (offset
, sizeof offset
));
8435 max_size
-= (i
+ 1);
8437 /* Escape as much data as fits into rs->buf. */
8438 buf_len
= remote_escape_output
8439 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8441 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8442 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8443 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8446 unpack_varlen_hex (rs
->buf
, &n
);
8450 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8451 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8452 number of bytes read is returned, or 0 for EOF, or -1 for error.
8453 The number of bytes read may be less than LEN without indicating an
8454 EOF. PACKET is checked and updated to indicate whether the remote
8455 target supports this object. */
8458 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8460 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8461 struct packet_config
*packet
)
8463 static char *finished_object
;
8464 static char *finished_annex
;
8465 static ULONGEST finished_offset
;
8467 struct remote_state
*rs
= get_remote_state ();
8468 LONGEST i
, n
, packet_len
;
8470 if (packet
->support
== PACKET_DISABLE
)
8473 /* Check whether we've cached an end-of-object packet that matches
8475 if (finished_object
)
8477 if (strcmp (object_name
, finished_object
) == 0
8478 && strcmp (annex
? annex
: "", finished_annex
) == 0
8479 && offset
== finished_offset
)
8482 /* Otherwise, we're now reading something different. Discard
8484 xfree (finished_object
);
8485 xfree (finished_annex
);
8486 finished_object
= NULL
;
8487 finished_annex
= NULL
;
8490 /* Request only enough to fit in a single packet. The actual data
8491 may not, since we don't know how much of it will need to be escaped;
8492 the target is free to respond with slightly less data. We subtract
8493 five to account for the response type and the protocol frame. */
8494 n
= min (get_remote_packet_size () - 5, len
);
8495 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8496 object_name
, annex
? annex
: "",
8497 phex_nz (offset
, sizeof offset
),
8498 phex_nz (n
, sizeof n
));
8499 i
= putpkt (rs
->buf
);
8504 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8505 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8508 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8509 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8511 /* 'm' means there is (or at least might be) more data after this
8512 batch. That does not make sense unless there's at least one byte
8513 of data in this reply. */
8514 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8515 error (_("Remote qXfer reply contained no data."));
8517 /* Got some data. */
8518 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8520 /* 'l' is an EOF marker, possibly including a final block of data,
8521 or possibly empty. If we have the final block of a non-empty
8522 object, record this fact to bypass a subsequent partial read. */
8523 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8525 finished_object
= xstrdup (object_name
);
8526 finished_annex
= xstrdup (annex
? annex
: "");
8527 finished_offset
= offset
+ i
;
8534 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8535 const char *annex
, gdb_byte
*readbuf
,
8536 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8538 struct remote_state
*rs
;
8543 set_remote_traceframe ();
8544 set_general_thread (inferior_ptid
);
8546 rs
= get_remote_state ();
8548 /* Handle memory using the standard memory routines. */
8549 if (object
== TARGET_OBJECT_MEMORY
)
8555 /* If the remote target is connected but not running, we should
8556 pass this request down to a lower stratum (e.g. the executable
8558 if (!target_has_execution
)
8561 if (writebuf
!= NULL
)
8562 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8564 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8568 else if (xfered
== 0 && errno
== 0)
8574 /* Handle SPU memory using qxfer packets. */
8575 if (object
== TARGET_OBJECT_SPU
)
8578 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8579 &remote_protocol_packets
8580 [PACKET_qXfer_spu_read
]);
8582 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8583 &remote_protocol_packets
8584 [PACKET_qXfer_spu_write
]);
8587 /* Handle extra signal info using qxfer packets. */
8588 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8591 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8592 &remote_protocol_packets
8593 [PACKET_qXfer_siginfo_read
]);
8595 return remote_write_qxfer (ops
, "siginfo", annex
,
8596 writebuf
, offset
, len
,
8597 &remote_protocol_packets
8598 [PACKET_qXfer_siginfo_write
]);
8601 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8604 return remote_read_qxfer (ops
, "statictrace", annex
,
8605 readbuf
, offset
, len
,
8606 &remote_protocol_packets
8607 [PACKET_qXfer_statictrace_read
]);
8612 /* Only handle flash writes. */
8613 if (writebuf
!= NULL
)
8619 case TARGET_OBJECT_FLASH
:
8620 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8624 else if (xfered
== 0 && errno
== 0)
8634 /* Map pre-existing objects onto letters. DO NOT do this for new
8635 objects!!! Instead specify new query packets. */
8638 case TARGET_OBJECT_AVR
:
8642 case TARGET_OBJECT_AUXV
:
8643 gdb_assert (annex
== NULL
);
8644 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8645 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8647 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8648 return remote_read_qxfer
8649 (ops
, "features", annex
, readbuf
, offset
, len
,
8650 &remote_protocol_packets
[PACKET_qXfer_features
]);
8652 case TARGET_OBJECT_LIBRARIES
:
8653 return remote_read_qxfer
8654 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8655 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8657 case TARGET_OBJECT_LIBRARIES_SVR4
:
8658 return remote_read_qxfer
8659 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8660 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8662 case TARGET_OBJECT_MEMORY_MAP
:
8663 gdb_assert (annex
== NULL
);
8664 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8665 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8667 case TARGET_OBJECT_OSDATA
:
8668 /* Should only get here if we're connected. */
8669 gdb_assert (remote_desc
);
8670 return remote_read_qxfer
8671 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8672 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8674 case TARGET_OBJECT_THREADS
:
8675 gdb_assert (annex
== NULL
);
8676 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8677 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8679 case TARGET_OBJECT_TRACEFRAME_INFO
:
8680 gdb_assert (annex
== NULL
);
8681 return remote_read_qxfer
8682 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8683 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8685 case TARGET_OBJECT_FDPIC
:
8686 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8687 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8689 case TARGET_OBJECT_OPENVMS_UIB
:
8690 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8691 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8697 /* Note: a zero OFFSET and LEN can be used to query the minimum
8699 if (offset
== 0 && len
== 0)
8700 return (get_remote_packet_size ());
8701 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8702 large enough let the caller deal with it. */
8703 if (len
< get_remote_packet_size ())
8705 len
= get_remote_packet_size ();
8707 /* Except for querying the minimum buffer size, target must be open. */
8709 error (_("remote query is only available after target open"));
8711 gdb_assert (annex
!= NULL
);
8712 gdb_assert (readbuf
!= NULL
);
8718 /* We used one buffer char for the remote protocol q command and
8719 another for the query type. As the remote protocol encapsulation
8720 uses 4 chars plus one extra in case we are debugging
8721 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8724 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8726 /* Bad caller may have sent forbidden characters. */
8727 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8732 gdb_assert (annex
[i
] == '\0');
8734 i
= putpkt (rs
->buf
);
8738 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8739 strcpy ((char *) readbuf
, rs
->buf
);
8741 return strlen ((char *) readbuf
);
8745 remote_search_memory (struct target_ops
* ops
,
8746 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8747 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8748 CORE_ADDR
*found_addrp
)
8750 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8751 struct remote_state
*rs
= get_remote_state ();
8752 int max_size
= get_memory_write_packet_size ();
8753 struct packet_config
*packet
=
8754 &remote_protocol_packets
[PACKET_qSearch_memory
];
8755 /* Number of packet bytes used to encode the pattern;
8756 this could be more than PATTERN_LEN due to escape characters. */
8757 int escaped_pattern_len
;
8758 /* Amount of pattern that was encodable in the packet. */
8759 int used_pattern_len
;
8762 ULONGEST found_addr
;
8764 /* Don't go to the target if we don't have to.
8765 This is done before checking packet->support to avoid the possibility that
8766 a success for this edge case means the facility works in general. */
8767 if (pattern_len
> search_space_len
)
8769 if (pattern_len
== 0)
8771 *found_addrp
= start_addr
;
8775 /* If we already know the packet isn't supported, fall back to the simple
8776 way of searching memory. */
8778 if (packet
->support
== PACKET_DISABLE
)
8780 /* Target doesn't provided special support, fall back and use the
8781 standard support (copy memory and do the search here). */
8782 return simple_search_memory (ops
, start_addr
, search_space_len
,
8783 pattern
, pattern_len
, found_addrp
);
8786 /* Insert header. */
8787 i
= snprintf (rs
->buf
, max_size
,
8788 "qSearch:memory:%s;%s;",
8789 phex_nz (start_addr
, addr_size
),
8790 phex_nz (search_space_len
, sizeof (search_space_len
)));
8791 max_size
-= (i
+ 1);
8793 /* Escape as much data as fits into rs->buf. */
8794 escaped_pattern_len
=
8795 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8796 &used_pattern_len
, max_size
);
8798 /* Bail if the pattern is too large. */
8799 if (used_pattern_len
!= pattern_len
)
8800 error (_("Pattern is too large to transmit to remote target."));
8802 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8803 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8804 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8806 /* The request may not have worked because the command is not
8807 supported. If so, fall back to the simple way. */
8808 if (packet
->support
== PACKET_DISABLE
)
8810 return simple_search_memory (ops
, start_addr
, search_space_len
,
8811 pattern
, pattern_len
, found_addrp
);
8816 if (rs
->buf
[0] == '0')
8818 else if (rs
->buf
[0] == '1')
8821 if (rs
->buf
[1] != ',')
8822 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8823 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8824 *found_addrp
= found_addr
;
8827 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8833 remote_rcmd (char *command
,
8834 struct ui_file
*outbuf
)
8836 struct remote_state
*rs
= get_remote_state ();
8840 error (_("remote rcmd is only available after target open"));
8842 /* Send a NULL command across as an empty command. */
8843 if (command
== NULL
)
8846 /* The query prefix. */
8847 strcpy (rs
->buf
, "qRcmd,");
8848 p
= strchr (rs
->buf
, '\0');
8850 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8851 > get_remote_packet_size ())
8852 error (_("\"monitor\" command ``%s'' is too long."), command
);
8854 /* Encode the actual command. */
8855 bin2hex ((gdb_byte
*) command
, p
, 0);
8857 if (putpkt (rs
->buf
) < 0)
8858 error (_("Communication problem with target."));
8860 /* get/display the response */
8865 /* XXX - see also remote_get_noisy_reply(). */
8866 QUIT
; /* Allow user to bail out with ^C. */
8868 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8870 /* Timeout. Continue to (try to) read responses.
8871 This is better than stopping with an error, assuming the stub
8872 is still executing the (long) monitor command.
8873 If needed, the user can interrupt gdb using C-c, obtaining
8874 an effect similar to stop on timeout. */
8879 error (_("Target does not support this command."));
8880 if (buf
[0] == 'O' && buf
[1] != 'K')
8882 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8885 if (strcmp (buf
, "OK") == 0)
8887 if (strlen (buf
) == 3 && buf
[0] == 'E'
8888 && isdigit (buf
[1]) && isdigit (buf
[2]))
8890 error (_("Protocol error with Rcmd"));
8892 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8894 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8896 fputc_unfiltered (c
, outbuf
);
8902 static VEC(mem_region_s
) *
8903 remote_memory_map (struct target_ops
*ops
)
8905 VEC(mem_region_s
) *result
= NULL
;
8906 char *text
= target_read_stralloc (¤t_target
,
8907 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8911 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8913 result
= parse_memory_map (text
);
8914 do_cleanups (back_to
);
8921 packet_command (char *args
, int from_tty
)
8923 struct remote_state
*rs
= get_remote_state ();
8926 error (_("command can only be used with remote target"));
8929 error (_("remote-packet command requires packet text as argument"));
8931 puts_filtered ("sending: ");
8932 print_packet (args
);
8933 puts_filtered ("\n");
8936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8937 puts_filtered ("received: ");
8938 print_packet (rs
->buf
);
8939 puts_filtered ("\n");
8943 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8945 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8947 static void threadset_test_cmd (char *cmd
, int tty
);
8949 static void threadalive_test (char *cmd
, int tty
);
8951 static void threadlist_test_cmd (char *cmd
, int tty
);
8953 int get_and_display_threadinfo (threadref
*ref
);
8955 static void threadinfo_test_cmd (char *cmd
, int tty
);
8957 static int thread_display_step (threadref
*ref
, void *context
);
8959 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8961 static void init_remote_threadtests (void);
8963 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8966 threadset_test_cmd (char *cmd
, int tty
)
8968 int sample_thread
= SAMPLE_THREAD
;
8970 printf_filtered (_("Remote threadset test\n"));
8971 set_general_thread (sample_thread
);
8976 threadalive_test (char *cmd
, int tty
)
8978 int sample_thread
= SAMPLE_THREAD
;
8979 int pid
= ptid_get_pid (inferior_ptid
);
8980 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8982 if (remote_thread_alive (ptid
))
8983 printf_filtered ("PASS: Thread alive test\n");
8985 printf_filtered ("FAIL: Thread alive test\n");
8988 void output_threadid (char *title
, threadref
*ref
);
8991 output_threadid (char *title
, threadref
*ref
)
8995 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8997 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9001 threadlist_test_cmd (char *cmd
, int tty
)
9004 threadref nextthread
;
9005 int done
, result_count
;
9006 threadref threadlist
[3];
9008 printf_filtered ("Remote Threadlist test\n");
9009 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9010 &result_count
, &threadlist
[0]))
9011 printf_filtered ("FAIL: threadlist test\n");
9014 threadref
*scan
= threadlist
;
9015 threadref
*limit
= scan
+ result_count
;
9017 while (scan
< limit
)
9018 output_threadid (" thread ", scan
++);
9023 display_thread_info (struct gdb_ext_thread_info
*info
)
9025 output_threadid ("Threadid: ", &info
->threadid
);
9026 printf_filtered ("Name: %s\n ", info
->shortname
);
9027 printf_filtered ("State: %s\n", info
->display
);
9028 printf_filtered ("other: %s\n\n", info
->more_display
);
9032 get_and_display_threadinfo (threadref
*ref
)
9036 struct gdb_ext_thread_info threadinfo
;
9038 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9039 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9040 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9041 display_thread_info (&threadinfo
);
9046 threadinfo_test_cmd (char *cmd
, int tty
)
9048 int athread
= SAMPLE_THREAD
;
9052 int_to_threadref (&thread
, athread
);
9053 printf_filtered ("Remote Threadinfo test\n");
9054 if (!get_and_display_threadinfo (&thread
))
9055 printf_filtered ("FAIL cannot get thread info\n");
9059 thread_display_step (threadref
*ref
, void *context
)
9061 /* output_threadid(" threadstep ",ref); *//* simple test */
9062 return get_and_display_threadinfo (ref
);
9066 threadlist_update_test_cmd (char *cmd
, int tty
)
9068 printf_filtered ("Remote Threadlist update test\n");
9069 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9073 init_remote_threadtests (void)
9075 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9076 _("Fetch and print the remote list of "
9077 "thread identifiers, one pkt only"));
9078 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9079 _("Fetch and display info about one thread"));
9080 add_com ("tset", class_obscure
, threadset_test_cmd
,
9081 _("Test setting to a different thread"));
9082 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9083 _("Iterate through updating all remote thread info"));
9084 add_com ("talive", class_obscure
, threadalive_test
,
9085 _(" Remote thread alive test "));
9090 /* Convert a thread ID to a string. Returns the string in a static
9094 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9096 static char buf
[64];
9097 struct remote_state
*rs
= get_remote_state ();
9099 if (ptid_equal (ptid
, null_ptid
))
9100 return normal_pid_to_str (ptid
);
9101 else if (ptid_is_pid (ptid
))
9103 /* Printing an inferior target id. */
9105 /* When multi-process extensions are off, there's no way in the
9106 remote protocol to know the remote process id, if there's any
9107 at all. There's one exception --- when we're connected with
9108 target extended-remote, and we manually attached to a process
9109 with "attach PID". We don't record anywhere a flag that
9110 allows us to distinguish that case from the case of
9111 connecting with extended-remote and the stub already being
9112 attached to a process, and reporting yes to qAttached, hence
9113 no smart special casing here. */
9114 if (!remote_multi_process_p (rs
))
9116 xsnprintf (buf
, sizeof buf
, "Remote target");
9120 return normal_pid_to_str (ptid
);
9124 if (ptid_equal (magic_null_ptid
, ptid
))
9125 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9126 else if (rs
->extended
&& remote_multi_process_p (rs
))
9127 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9128 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9130 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9131 ptid_get_tid (ptid
));
9136 /* Get the address of the thread local variable in OBJFILE which is
9137 stored at OFFSET within the thread local storage for thread PTID. */
9140 remote_get_thread_local_address (struct target_ops
*ops
,
9141 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9143 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9145 struct remote_state
*rs
= get_remote_state ();
9147 char *endp
= rs
->buf
+ get_remote_packet_size ();
9148 enum packet_result result
;
9150 strcpy (p
, "qGetTLSAddr:");
9152 p
= write_ptid (p
, endp
, ptid
);
9154 p
+= hexnumstr (p
, offset
);
9156 p
+= hexnumstr (p
, lm
);
9160 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9161 result
= packet_ok (rs
->buf
,
9162 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9163 if (result
== PACKET_OK
)
9167 unpack_varlen_hex (rs
->buf
, &result
);
9170 else if (result
== PACKET_UNKNOWN
)
9171 throw_error (TLS_GENERIC_ERROR
,
9172 _("Remote target doesn't support qGetTLSAddr packet"));
9174 throw_error (TLS_GENERIC_ERROR
,
9175 _("Remote target failed to process qGetTLSAddr request"));
9178 throw_error (TLS_GENERIC_ERROR
,
9179 _("TLS not supported or disabled on this target"));
9184 /* Provide thread local base, i.e. Thread Information Block address.
9185 Returns 1 if ptid is found and thread_local_base is non zero. */
9188 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9190 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9192 struct remote_state
*rs
= get_remote_state ();
9194 char *endp
= rs
->buf
+ get_remote_packet_size ();
9195 enum packet_result result
;
9197 strcpy (p
, "qGetTIBAddr:");
9199 p
= write_ptid (p
, endp
, ptid
);
9203 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9204 result
= packet_ok (rs
->buf
,
9205 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9206 if (result
== PACKET_OK
)
9210 unpack_varlen_hex (rs
->buf
, &result
);
9212 *addr
= (CORE_ADDR
) result
;
9215 else if (result
== PACKET_UNKNOWN
)
9216 error (_("Remote target doesn't support qGetTIBAddr packet"));
9218 error (_("Remote target failed to process qGetTIBAddr request"));
9221 error (_("qGetTIBAddr not supported or disabled on this target"));
9226 /* Support for inferring a target description based on the current
9227 architecture and the size of a 'g' packet. While the 'g' packet
9228 can have any size (since optional registers can be left off the
9229 end), some sizes are easily recognizable given knowledge of the
9230 approximate architecture. */
9232 struct remote_g_packet_guess
9235 const struct target_desc
*tdesc
;
9237 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9238 DEF_VEC_O(remote_g_packet_guess_s
);
9240 struct remote_g_packet_data
9242 VEC(remote_g_packet_guess_s
) *guesses
;
9245 static struct gdbarch_data
*remote_g_packet_data_handle
;
9248 remote_g_packet_data_init (struct obstack
*obstack
)
9250 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9254 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9255 const struct target_desc
*tdesc
)
9257 struct remote_g_packet_data
*data
9258 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9259 struct remote_g_packet_guess new_guess
, *guess
;
9262 gdb_assert (tdesc
!= NULL
);
9265 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9267 if (guess
->bytes
== bytes
)
9268 internal_error (__FILE__
, __LINE__
,
9269 _("Duplicate g packet description added for size %d"),
9272 new_guess
.bytes
= bytes
;
9273 new_guess
.tdesc
= tdesc
;
9274 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9277 /* Return 1 if remote_read_description would do anything on this target
9278 and architecture, 0 otherwise. */
9281 remote_read_description_p (struct target_ops
*target
)
9283 struct remote_g_packet_data
*data
9284 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9286 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9292 static const struct target_desc
*
9293 remote_read_description (struct target_ops
*target
)
9295 struct remote_g_packet_data
*data
9296 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9298 /* Do not try this during initial connection, when we do not know
9299 whether there is a running but stopped thread. */
9300 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9303 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9305 struct remote_g_packet_guess
*guess
;
9307 int bytes
= send_g_packet ();
9310 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9312 if (guess
->bytes
== bytes
)
9313 return guess
->tdesc
;
9315 /* We discard the g packet. A minor optimization would be to
9316 hold on to it, and fill the register cache once we have selected
9317 an architecture, but it's too tricky to do safely. */
9323 /* Remote file transfer support. This is host-initiated I/O, not
9324 target-initiated; for target-initiated, see remote-fileio.c. */
9326 /* If *LEFT is at least the length of STRING, copy STRING to
9327 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9328 decrease *LEFT. Otherwise raise an error. */
9331 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9333 int len
= strlen (string
);
9336 error (_("Packet too long for target."));
9338 memcpy (*buffer
, string
, len
);
9342 /* NUL-terminate the buffer as a convenience, if there is
9348 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9349 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9350 decrease *LEFT. Otherwise raise an error. */
9353 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9356 if (2 * len
> *left
)
9357 error (_("Packet too long for target."));
9359 bin2hex (bytes
, *buffer
, len
);
9363 /* NUL-terminate the buffer as a convenience, if there is
9369 /* If *LEFT is large enough, convert VALUE to hex and add it to
9370 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9371 decrease *LEFT. Otherwise raise an error. */
9374 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9376 int len
= hexnumlen (value
);
9379 error (_("Packet too long for target."));
9381 hexnumstr (*buffer
, value
);
9385 /* NUL-terminate the buffer as a convenience, if there is
9391 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9392 value, *REMOTE_ERRNO to the remote error number or zero if none
9393 was included, and *ATTACHMENT to point to the start of the annex
9394 if any. The length of the packet isn't needed here; there may
9395 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9397 Return 0 if the packet could be parsed, -1 if it could not. If
9398 -1 is returned, the other variables may not be initialized. */
9401 remote_hostio_parse_result (char *buffer
, int *retcode
,
9402 int *remote_errno
, char **attachment
)
9409 if (buffer
[0] != 'F')
9413 *retcode
= strtol (&buffer
[1], &p
, 16);
9414 if (errno
!= 0 || p
== &buffer
[1])
9417 /* Check for ",errno". */
9421 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9422 if (errno
!= 0 || p
+ 1 == p2
)
9427 /* Check for ";attachment". If there is no attachment, the
9428 packet should end here. */
9431 *attachment
= p
+ 1;
9434 else if (*p
== '\0')
9440 /* Send a prepared I/O packet to the target and read its response.
9441 The prepared packet is in the global RS->BUF before this function
9442 is called, and the answer is there when we return.
9444 COMMAND_BYTES is the length of the request to send, which may include
9445 binary data. WHICH_PACKET is the packet configuration to check
9446 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9447 is set to the error number and -1 is returned. Otherwise the value
9448 returned by the function is returned.
9450 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9451 attachment is expected; an error will be reported if there's a
9452 mismatch. If one is found, *ATTACHMENT will be set to point into
9453 the packet buffer and *ATTACHMENT_LEN will be set to the
9454 attachment's length. */
9457 remote_hostio_send_command (int command_bytes
, int which_packet
,
9458 int *remote_errno
, char **attachment
,
9459 int *attachment_len
)
9461 struct remote_state
*rs
= get_remote_state ();
9462 int ret
, bytes_read
;
9463 char *attachment_tmp
;
9466 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9468 *remote_errno
= FILEIO_ENOSYS
;
9472 putpkt_binary (rs
->buf
, command_bytes
);
9473 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9475 /* If it timed out, something is wrong. Don't try to parse the
9479 *remote_errno
= FILEIO_EINVAL
;
9483 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9486 *remote_errno
= FILEIO_EINVAL
;
9488 case PACKET_UNKNOWN
:
9489 *remote_errno
= FILEIO_ENOSYS
;
9495 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9498 *remote_errno
= FILEIO_EINVAL
;
9502 /* Make sure we saw an attachment if and only if we expected one. */
9503 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9504 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9506 *remote_errno
= FILEIO_EINVAL
;
9510 /* If an attachment was found, it must point into the packet buffer;
9511 work out how many bytes there were. */
9512 if (attachment_tmp
!= NULL
)
9514 *attachment
= attachment_tmp
;
9515 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9521 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9522 remote file descriptor, or -1 if an error occurs (and set
9526 remote_hostio_open (const char *filename
, int flags
, int mode
,
9529 struct remote_state
*rs
= get_remote_state ();
9531 int left
= get_remote_packet_size () - 1;
9533 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9535 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9537 remote_buffer_add_string (&p
, &left
, ",");
9539 remote_buffer_add_int (&p
, &left
, flags
);
9540 remote_buffer_add_string (&p
, &left
, ",");
9542 remote_buffer_add_int (&p
, &left
, mode
);
9544 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9545 remote_errno
, NULL
, NULL
);
9548 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9549 Return the number of bytes written, or -1 if an error occurs (and
9550 set *REMOTE_ERRNO). */
9553 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9554 ULONGEST offset
, int *remote_errno
)
9556 struct remote_state
*rs
= get_remote_state ();
9558 int left
= get_remote_packet_size ();
9561 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9563 remote_buffer_add_int (&p
, &left
, fd
);
9564 remote_buffer_add_string (&p
, &left
, ",");
9566 remote_buffer_add_int (&p
, &left
, offset
);
9567 remote_buffer_add_string (&p
, &left
, ",");
9569 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9570 get_remote_packet_size () - (p
- rs
->buf
));
9572 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9573 remote_errno
, NULL
, NULL
);
9576 /* Read up to LEN bytes FD on the remote target into READ_BUF
9577 Return the number of bytes read, or -1 if an error occurs (and
9578 set *REMOTE_ERRNO). */
9581 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9582 ULONGEST offset
, int *remote_errno
)
9584 struct remote_state
*rs
= get_remote_state ();
9587 int left
= get_remote_packet_size ();
9588 int ret
, attachment_len
;
9591 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9593 remote_buffer_add_int (&p
, &left
, fd
);
9594 remote_buffer_add_string (&p
, &left
, ",");
9596 remote_buffer_add_int (&p
, &left
, len
);
9597 remote_buffer_add_string (&p
, &left
, ",");
9599 remote_buffer_add_int (&p
, &left
, offset
);
9601 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9602 remote_errno
, &attachment
,
9608 read_len
= remote_unescape_input (attachment
, attachment_len
,
9610 if (read_len
!= ret
)
9611 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9616 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9617 (and set *REMOTE_ERRNO). */
9620 remote_hostio_close (int fd
, int *remote_errno
)
9622 struct remote_state
*rs
= get_remote_state ();
9624 int left
= get_remote_packet_size () - 1;
9626 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9628 remote_buffer_add_int (&p
, &left
, fd
);
9630 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9631 remote_errno
, NULL
, NULL
);
9634 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9635 occurs (and set *REMOTE_ERRNO). */
9638 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9640 struct remote_state
*rs
= get_remote_state ();
9642 int left
= get_remote_packet_size () - 1;
9644 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9646 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9649 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9650 remote_errno
, NULL
, NULL
);
9653 /* Read value of symbolic link FILENAME on the remote target. Return
9654 a null-terminated string allocated via xmalloc, or NULL if an error
9655 occurs (and set *REMOTE_ERRNO). */
9658 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9660 struct remote_state
*rs
= get_remote_state ();
9663 int left
= get_remote_packet_size ();
9664 int len
, attachment_len
;
9668 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9670 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9673 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9674 remote_errno
, &attachment
,
9680 ret
= xmalloc (len
+ 1);
9682 read_len
= remote_unescape_input (attachment
, attachment_len
,
9684 if (read_len
!= len
)
9685 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9692 remote_fileio_errno_to_host (int errnum
)
9716 case FILEIO_ENOTDIR
:
9736 case FILEIO_ENAMETOOLONG
:
9737 return ENAMETOOLONG
;
9743 remote_hostio_error (int errnum
)
9745 int host_error
= remote_fileio_errno_to_host (errnum
);
9747 if (host_error
== -1)
9748 error (_("Unknown remote I/O error %d"), errnum
);
9750 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9754 remote_hostio_close_cleanup (void *opaque
)
9756 int fd
= *(int *) opaque
;
9759 remote_hostio_close (fd
, &remote_errno
);
9764 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9766 const char *filename
= bfd_get_filename (abfd
);
9767 int fd
, remote_errno
;
9770 gdb_assert (remote_filename_p (filename
));
9772 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9775 errno
= remote_fileio_errno_to_host (remote_errno
);
9776 bfd_set_error (bfd_error_system_call
);
9780 stream
= xmalloc (sizeof (int));
9786 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9788 int fd
= *(int *)stream
;
9793 /* Ignore errors on close; these may happen if the remote
9794 connection was already torn down. */
9795 remote_hostio_close (fd
, &remote_errno
);
9801 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9802 file_ptr nbytes
, file_ptr offset
)
9804 int fd
= *(int *)stream
;
9806 file_ptr pos
, bytes
;
9809 while (nbytes
> pos
)
9811 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9812 offset
+ pos
, &remote_errno
);
9814 /* Success, but no bytes, means end-of-file. */
9818 errno
= remote_fileio_errno_to_host (remote_errno
);
9819 bfd_set_error (bfd_error_system_call
);
9830 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9832 /* FIXME: We should probably implement remote_hostio_stat. */
9833 sb
->st_size
= INT_MAX
;
9838 remote_filename_p (const char *filename
)
9840 return strncmp (filename
, "remote:", 7) == 0;
9844 remote_bfd_open (const char *remote_file
, const char *target
)
9846 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9847 remote_bfd_iovec_open
, NULL
,
9848 remote_bfd_iovec_pread
,
9849 remote_bfd_iovec_close
,
9850 remote_bfd_iovec_stat
);
9856 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9858 struct cleanup
*back_to
, *close_cleanup
;
9859 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9862 int bytes_in_buffer
;
9867 error (_("command can only be used with remote target"));
9869 file
= fopen (local_file
, "rb");
9871 perror_with_name (local_file
);
9872 back_to
= make_cleanup_fclose (file
);
9874 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9876 0700, &remote_errno
);
9878 remote_hostio_error (remote_errno
);
9880 /* Send up to this many bytes at once. They won't all fit in the
9881 remote packet limit, so we'll transfer slightly fewer. */
9882 io_size
= get_remote_packet_size ();
9883 buffer
= xmalloc (io_size
);
9884 make_cleanup (xfree
, buffer
);
9886 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9888 bytes_in_buffer
= 0;
9891 while (bytes_in_buffer
|| !saw_eof
)
9895 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9896 io_size
- bytes_in_buffer
,
9901 error (_("Error reading %s."), local_file
);
9904 /* EOF. Unless there is something still in the
9905 buffer from the last iteration, we are done. */
9907 if (bytes_in_buffer
== 0)
9915 bytes
+= bytes_in_buffer
;
9916 bytes_in_buffer
= 0;
9918 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9919 offset
, &remote_errno
);
9922 remote_hostio_error (remote_errno
);
9923 else if (retcode
== 0)
9924 error (_("Remote write of %d bytes returned 0!"), bytes
);
9925 else if (retcode
< bytes
)
9927 /* Short write. Save the rest of the read data for the next
9929 bytes_in_buffer
= bytes
- retcode
;
9930 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9936 discard_cleanups (close_cleanup
);
9937 if (remote_hostio_close (fd
, &remote_errno
))
9938 remote_hostio_error (remote_errno
);
9941 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9942 do_cleanups (back_to
);
9946 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9948 struct cleanup
*back_to
, *close_cleanup
;
9949 int fd
, remote_errno
, bytes
, io_size
;
9955 error (_("command can only be used with remote target"));
9957 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9959 remote_hostio_error (remote_errno
);
9961 file
= fopen (local_file
, "wb");
9963 perror_with_name (local_file
);
9964 back_to
= make_cleanup_fclose (file
);
9966 /* Send up to this many bytes at once. They won't all fit in the
9967 remote packet limit, so we'll transfer slightly fewer. */
9968 io_size
= get_remote_packet_size ();
9969 buffer
= xmalloc (io_size
);
9970 make_cleanup (xfree
, buffer
);
9972 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9977 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9979 /* Success, but no bytes, means end-of-file. */
9982 remote_hostio_error (remote_errno
);
9986 bytes
= fwrite (buffer
, 1, bytes
, file
);
9988 perror_with_name (local_file
);
9991 discard_cleanups (close_cleanup
);
9992 if (remote_hostio_close (fd
, &remote_errno
))
9993 remote_hostio_error (remote_errno
);
9996 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9997 do_cleanups (back_to
);
10001 remote_file_delete (const char *remote_file
, int from_tty
)
10003 int retcode
, remote_errno
;
10006 error (_("command can only be used with remote target"));
10008 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10010 remote_hostio_error (remote_errno
);
10013 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10017 remote_put_command (char *args
, int from_tty
)
10019 struct cleanup
*back_to
;
10023 error_no_arg (_("file to put"));
10025 argv
= gdb_buildargv (args
);
10026 back_to
= make_cleanup_freeargv (argv
);
10027 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10028 error (_("Invalid parameters to remote put"));
10030 remote_file_put (argv
[0], argv
[1], from_tty
);
10032 do_cleanups (back_to
);
10036 remote_get_command (char *args
, int from_tty
)
10038 struct cleanup
*back_to
;
10042 error_no_arg (_("file to get"));
10044 argv
= gdb_buildargv (args
);
10045 back_to
= make_cleanup_freeargv (argv
);
10046 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10047 error (_("Invalid parameters to remote get"));
10049 remote_file_get (argv
[0], argv
[1], from_tty
);
10051 do_cleanups (back_to
);
10055 remote_delete_command (char *args
, int from_tty
)
10057 struct cleanup
*back_to
;
10061 error_no_arg (_("file to delete"));
10063 argv
= gdb_buildargv (args
);
10064 back_to
= make_cleanup_freeargv (argv
);
10065 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10066 error (_("Invalid parameters to remote delete"));
10068 remote_file_delete (argv
[0], from_tty
);
10070 do_cleanups (back_to
);
10074 remote_command (char *args
, int from_tty
)
10076 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10080 remote_can_execute_reverse (void)
10082 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10083 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10090 remote_supports_non_stop (void)
10096 remote_supports_disable_randomization (void)
10098 /* Only supported in extended mode. */
10103 remote_supports_multi_process (void)
10105 struct remote_state
*rs
= get_remote_state ();
10107 /* Only extended-remote handles being attached to multiple
10108 processes, even though plain remote can use the multi-process
10109 thread id extensions, so that GDB knows the target process's
10111 return rs
->extended
&& remote_multi_process_p (rs
);
10115 remote_supports_cond_tracepoints (void)
10117 struct remote_state
*rs
= get_remote_state ();
10119 return rs
->cond_tracepoints
;
10123 remote_supports_cond_breakpoints (void)
10125 struct remote_state
*rs
= get_remote_state ();
10127 return rs
->cond_breakpoints
;
10131 remote_supports_fast_tracepoints (void)
10133 struct remote_state
*rs
= get_remote_state ();
10135 return rs
->fast_tracepoints
;
10139 remote_supports_static_tracepoints (void)
10141 struct remote_state
*rs
= get_remote_state ();
10143 return rs
->static_tracepoints
;
10147 remote_supports_install_in_trace (void)
10149 struct remote_state
*rs
= get_remote_state ();
10151 return rs
->install_in_trace
;
10155 remote_supports_enable_disable_tracepoint (void)
10157 struct remote_state
*rs
= get_remote_state ();
10159 return rs
->enable_disable_tracepoints
;
10163 remote_supports_string_tracing (void)
10165 struct remote_state
*rs
= get_remote_state ();
10167 return rs
->string_tracing
;
10171 remote_can_run_breakpoint_commands (void)
10173 struct remote_state
*rs
= get_remote_state ();
10175 return rs
->breakpoint_commands
;
10179 remote_trace_init (void)
10182 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10183 if (strcmp (target_buf
, "OK") != 0)
10184 error (_("Target does not support this command."));
10187 static void free_actions_list (char **actions_list
);
10188 static void free_actions_list_cleanup_wrapper (void *);
10190 free_actions_list_cleanup_wrapper (void *al
)
10192 free_actions_list (al
);
10196 free_actions_list (char **actions_list
)
10200 if (actions_list
== 0)
10203 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10204 xfree (actions_list
[ndx
]);
10206 xfree (actions_list
);
10209 /* Recursive routine to walk through command list including loops, and
10210 download packets for each command. */
10213 remote_download_command_source (int num
, ULONGEST addr
,
10214 struct command_line
*cmds
)
10216 struct remote_state
*rs
= get_remote_state ();
10217 struct command_line
*cmd
;
10219 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10221 QUIT
; /* Allow user to bail out with ^C. */
10222 strcpy (rs
->buf
, "QTDPsrc:");
10223 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10224 rs
->buf
+ strlen (rs
->buf
),
10225 rs
->buf_size
- strlen (rs
->buf
));
10227 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10228 if (strcmp (target_buf
, "OK"))
10229 warning (_("Target does not support source download."));
10231 if (cmd
->control_type
== while_control
10232 || cmd
->control_type
== while_stepping_control
)
10234 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10236 QUIT
; /* Allow user to bail out with ^C. */
10237 strcpy (rs
->buf
, "QTDPsrc:");
10238 encode_source_string (num
, addr
, "cmd", "end",
10239 rs
->buf
+ strlen (rs
->buf
),
10240 rs
->buf_size
- strlen (rs
->buf
));
10242 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10243 if (strcmp (target_buf
, "OK"))
10244 warning (_("Target does not support source download."));
10250 remote_download_tracepoint (struct bp_location
*loc
)
10252 #define BUF_SIZE 2048
10256 char buf
[BUF_SIZE
];
10257 char **tdp_actions
;
10258 char **stepping_actions
;
10260 struct cleanup
*old_chain
= NULL
;
10261 struct agent_expr
*aexpr
;
10262 struct cleanup
*aexpr_chain
= NULL
;
10264 struct breakpoint
*b
= loc
->owner
;
10265 struct tracepoint
*t
= (struct tracepoint
*) b
;
10267 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10268 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10270 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10273 tpaddr
= loc
->address
;
10274 sprintf_vma (addrbuf
, tpaddr
);
10275 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10276 addrbuf
, /* address */
10277 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10278 t
->step_count
, t
->pass_count
);
10279 /* Fast tracepoints are mostly handled by the target, but we can
10280 tell the target how big of an instruction block should be moved
10282 if (b
->type
== bp_fast_tracepoint
)
10284 /* Only test for support at download time; we may not know
10285 target capabilities at definition time. */
10286 if (remote_supports_fast_tracepoints ())
10290 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10291 tpaddr
, &isize
, NULL
))
10292 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10295 /* If it passed validation at definition but fails now,
10296 something is very wrong. */
10297 internal_error (__FILE__
, __LINE__
,
10298 _("Fast tracepoint not "
10299 "valid during download"));
10302 /* Fast tracepoints are functionally identical to regular
10303 tracepoints, so don't take lack of support as a reason to
10304 give up on the trace run. */
10305 warning (_("Target does not support fast tracepoints, "
10306 "downloading %d as regular tracepoint"), b
->number
);
10308 else if (b
->type
== bp_static_tracepoint
)
10310 /* Only test for support at download time; we may not know
10311 target capabilities at definition time. */
10312 if (remote_supports_static_tracepoints ())
10314 struct static_tracepoint_marker marker
;
10316 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10317 strcat (buf
, ":S");
10319 error (_("Static tracepoint not valid during download"));
10322 /* Fast tracepoints are functionally identical to regular
10323 tracepoints, so don't take lack of support as a reason
10324 to give up on the trace run. */
10325 error (_("Target does not support static tracepoints"));
10327 /* If the tracepoint has a conditional, make it into an agent
10328 expression and append to the definition. */
10331 /* Only test support at download time, we may not know target
10332 capabilities at definition time. */
10333 if (remote_supports_cond_tracepoints ())
10335 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10336 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10337 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10339 pkt
= buf
+ strlen (buf
);
10340 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10341 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10343 do_cleanups (aexpr_chain
);
10346 warning (_("Target does not support conditional tracepoints, "
10347 "ignoring tp %d cond"), b
->number
);
10350 if (b
->commands
|| *default_collect
)
10353 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10354 if (strcmp (target_buf
, "OK"))
10355 error (_("Target does not support tracepoints."));
10357 /* do_single_steps (t); */
10360 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10362 QUIT
; /* Allow user to bail out with ^C. */
10363 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10364 b
->number
, addrbuf
, /* address */
10366 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10369 remote_get_noisy_reply (&target_buf
,
10371 if (strcmp (target_buf
, "OK"))
10372 error (_("Error on target while setting tracepoints."));
10375 if (stepping_actions
)
10377 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10379 QUIT
; /* Allow user to bail out with ^C. */
10380 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10381 b
->number
, addrbuf
, /* address */
10382 ((ndx
== 0) ? "S" : ""),
10383 stepping_actions
[ndx
],
10384 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10386 remote_get_noisy_reply (&target_buf
,
10388 if (strcmp (target_buf
, "OK"))
10389 error (_("Error on target while setting tracepoints."));
10393 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10396 if (b
->addr_string
)
10398 strcpy (buf
, "QTDPsrc:");
10399 encode_source_string (b
->number
, loc
->address
,
10400 "at", b
->addr_string
, buf
+ strlen (buf
),
10401 2048 - strlen (buf
));
10404 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10405 if (strcmp (target_buf
, "OK"))
10406 warning (_("Target does not support source download."));
10408 if (b
->cond_string
)
10410 strcpy (buf
, "QTDPsrc:");
10411 encode_source_string (b
->number
, loc
->address
,
10412 "cond", b
->cond_string
, buf
+ strlen (buf
),
10413 2048 - strlen (buf
));
10415 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10416 if (strcmp (target_buf
, "OK"))
10417 warning (_("Target does not support source download."));
10419 remote_download_command_source (b
->number
, loc
->address
,
10420 breakpoint_commands (b
));
10423 do_cleanups (old_chain
);
10427 remote_can_download_tracepoint (void)
10429 struct remote_state
*rs
= get_remote_state ();
10430 struct trace_status
*ts
;
10433 /* Don't try to install tracepoints until we've relocated our
10434 symbols, and fetched and merged the target's tracepoint list with
10436 if (rs
->starting_up
)
10439 ts
= current_trace_status ();
10440 status
= remote_get_trace_status (ts
);
10442 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10445 /* If we are in a tracing experiment, but remote stub doesn't support
10446 installing tracepoint in trace, we have to return. */
10447 if (!remote_supports_install_in_trace ())
10455 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10457 struct remote_state
*rs
= get_remote_state ();
10460 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10461 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10463 p
= rs
->buf
+ strlen (rs
->buf
);
10464 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10465 error (_("Trace state variable name too long for tsv definition packet"));
10466 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10469 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10470 if (*target_buf
== '\0')
10471 error (_("Target does not support this command."));
10472 if (strcmp (target_buf
, "OK") != 0)
10473 error (_("Error on target while downloading trace state variable."));
10477 remote_enable_tracepoint (struct bp_location
*location
)
10479 struct remote_state
*rs
= get_remote_state ();
10482 sprintf_vma (addr_buf
, location
->address
);
10483 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10484 location
->owner
->number
, addr_buf
);
10486 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10487 if (*rs
->buf
== '\0')
10488 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10489 if (strcmp (rs
->buf
, "OK") != 0)
10490 error (_("Error on target while enabling tracepoint."));
10494 remote_disable_tracepoint (struct bp_location
*location
)
10496 struct remote_state
*rs
= get_remote_state ();
10499 sprintf_vma (addr_buf
, location
->address
);
10500 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10501 location
->owner
->number
, addr_buf
);
10503 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10504 if (*rs
->buf
== '\0')
10505 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10506 if (strcmp (rs
->buf
, "OK") != 0)
10507 error (_("Error on target while disabling tracepoint."));
10511 remote_trace_set_readonly_regions (void)
10515 bfd_size_type size
;
10521 return; /* No information to give. */
10523 strcpy (target_buf
, "QTro");
10524 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10526 char tmp1
[40], tmp2
[40];
10529 if ((s
->flags
& SEC_LOAD
) == 0 ||
10530 /* (s->flags & SEC_CODE) == 0 || */
10531 (s
->flags
& SEC_READONLY
) == 0)
10535 vma
= bfd_get_section_vma (abfd
, s
);
10536 size
= bfd_get_section_size (s
);
10537 sprintf_vma (tmp1
, vma
);
10538 sprintf_vma (tmp2
, vma
+ size
);
10539 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10540 if (offset
+ sec_length
+ 1 > target_buf_size
)
10542 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10545 Too many sections for read-only sections definition packet."));
10548 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10550 offset
+= sec_length
;
10554 putpkt (target_buf
);
10555 getpkt (&target_buf
, &target_buf_size
, 0);
10560 remote_trace_start (void)
10562 putpkt ("QTStart");
10563 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10564 if (*target_buf
== '\0')
10565 error (_("Target does not support this command."));
10566 if (strcmp (target_buf
, "OK") != 0)
10567 error (_("Bogus reply from target: %s"), target_buf
);
10571 remote_get_trace_status (struct trace_status
*ts
)
10573 /* Initialize it just to avoid a GCC false warning. */
10575 /* FIXME we need to get register block size some other way. */
10576 extern int trace_regblock_size
;
10577 volatile struct gdb_exception ex
;
10579 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10581 putpkt ("qTStatus");
10583 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10585 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10589 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10593 /* If the remote target doesn't do tracing, flag it. */
10597 /* We're working with a live target. */
10601 error (_("Bogus trace status reply from target: %s"), target_buf
);
10603 /* Function 'parse_trace_status' sets default value of each field of
10604 'ts' at first, so we don't have to do it here. */
10605 parse_trace_status (p
, ts
);
10607 return ts
->running
;
10611 remote_get_tracepoint_status (struct breakpoint
*bp
,
10612 struct uploaded_tp
*utp
)
10614 struct remote_state
*rs
= get_remote_state ();
10616 struct bp_location
*loc
;
10617 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10618 size_t size
= get_remote_packet_size ();
10622 tp
->base
.hit_count
= 0;
10623 tp
->traceframe_usage
= 0;
10624 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10626 /* If the tracepoint was never downloaded, don't go asking for
10628 if (tp
->number_on_target
== 0)
10630 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10631 phex_nz (loc
->address
, 0));
10633 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10634 if (reply
&& *reply
)
10637 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10643 utp
->hit_count
= 0;
10644 utp
->traceframe_usage
= 0;
10645 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10646 phex_nz (utp
->addr
, 0));
10648 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10649 if (reply
&& *reply
)
10652 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10658 remote_trace_stop (void)
10661 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10662 if (*target_buf
== '\0')
10663 error (_("Target does not support this command."));
10664 if (strcmp (target_buf
, "OK") != 0)
10665 error (_("Bogus reply from target: %s"), target_buf
);
10669 remote_trace_find (enum trace_find_type type
, int num
,
10670 ULONGEST addr1
, ULONGEST addr2
,
10673 struct remote_state
*rs
= get_remote_state ();
10674 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10676 int target_frameno
= -1, target_tracept
= -1;
10678 /* Lookups other than by absolute frame number depend on the current
10679 trace selected, so make sure it is correct on the remote end
10681 if (type
!= tfind_number
)
10682 set_remote_traceframe ();
10685 strcpy (p
, "QTFrame:");
10686 p
= strchr (p
, '\0');
10690 xsnprintf (p
, endbuf
- p
, "%x", num
);
10693 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10696 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10699 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10700 phex_nz (addr2
, 0));
10702 case tfind_outside
:
10703 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10704 phex_nz (addr2
, 0));
10707 error (_("Unknown trace find type %d"), type
);
10711 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10712 if (*reply
== '\0')
10713 error (_("Target does not support this command."));
10715 while (reply
&& *reply
)
10720 target_frameno
= (int) strtol (p
, &reply
, 16);
10722 error (_("Unable to parse trace frame number"));
10723 /* Don't update our remote traceframe number cache on failure
10724 to select a remote traceframe. */
10725 if (target_frameno
== -1)
10730 target_tracept
= (int) strtol (p
, &reply
, 16);
10732 error (_("Unable to parse tracepoint number"));
10734 case 'O': /* "OK"? */
10735 if (reply
[1] == 'K' && reply
[2] == '\0')
10738 error (_("Bogus reply from target: %s"), reply
);
10741 error (_("Bogus reply from target: %s"), reply
);
10744 *tpp
= target_tracept
;
10746 remote_traceframe_number
= target_frameno
;
10747 return target_frameno
;
10751 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10753 struct remote_state
*rs
= get_remote_state ();
10757 set_remote_traceframe ();
10759 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10761 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10762 if (reply
&& *reply
)
10766 unpack_varlen_hex (reply
+ 1, &uval
);
10767 *val
= (LONGEST
) uval
;
10775 remote_save_trace_data (const char *filename
)
10777 struct remote_state
*rs
= get_remote_state ();
10781 strcpy (p
, "QTSave:");
10783 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10784 error (_("Remote file name too long for trace save packet"));
10785 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10788 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10789 if (*reply
== '\0')
10790 error (_("Target does not support this command."));
10791 if (strcmp (reply
, "OK") != 0)
10792 error (_("Bogus reply from target: %s"), reply
);
10796 /* This is basically a memory transfer, but needs to be its own packet
10797 because we don't know how the target actually organizes its trace
10798 memory, plus we want to be able to ask for as much as possible, but
10799 not be unhappy if we don't get as much as we ask for. */
10802 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10804 struct remote_state
*rs
= get_remote_state ();
10810 strcpy (p
, "qTBuffer:");
10812 p
+= hexnumstr (p
, offset
);
10814 p
+= hexnumstr (p
, len
);
10818 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10819 if (reply
&& *reply
)
10821 /* 'l' by itself means we're at the end of the buffer and
10822 there is nothing more to get. */
10826 /* Convert the reply into binary. Limit the number of bytes to
10827 convert according to our passed-in buffer size, rather than
10828 what was returned in the packet; if the target is
10829 unexpectedly generous and gives us a bigger reply than we
10830 asked for, we don't want to crash. */
10831 rslt
= hex2bin (target_buf
, buf
, len
);
10835 /* Something went wrong, flag as an error. */
10840 remote_set_disconnected_tracing (int val
)
10842 struct remote_state
*rs
= get_remote_state ();
10844 if (rs
->disconnected_tracing
)
10848 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10850 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10851 if (*reply
== '\0')
10852 error (_("Target does not support this command."));
10853 if (strcmp (reply
, "OK") != 0)
10854 error (_("Bogus reply from target: %s"), reply
);
10857 warning (_("Target does not support disconnected tracing."));
10861 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10863 struct thread_info
*info
= find_thread_ptid (ptid
);
10865 if (info
&& info
->private)
10866 return info
->private->core
;
10871 remote_set_circular_trace_buffer (int val
)
10873 struct remote_state
*rs
= get_remote_state ();
10876 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
10878 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10879 if (*reply
== '\0')
10880 error (_("Target does not support this command."));
10881 if (strcmp (reply
, "OK") != 0)
10882 error (_("Bogus reply from target: %s"), reply
);
10885 static struct traceframe_info
*
10886 remote_traceframe_info (void)
10890 text
= target_read_stralloc (¤t_target
,
10891 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10894 struct traceframe_info
*info
;
10895 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10897 info
= parse_traceframe_info (text
);
10898 do_cleanups (back_to
);
10905 /* Handle the qTMinFTPILen packet. Returns the minimum length of
10906 instruction on which a fast tracepoint may be placed. Returns -1
10907 if the packet is not supported, and 0 if the minimum instruction
10908 length is unknown. */
10911 remote_get_min_fast_tracepoint_insn_len (void)
10913 struct remote_state
*rs
= get_remote_state ();
10916 /* If we're not debugging a process yet, the IPA can't be
10918 if (!target_has_execution
)
10921 /* Make sure the remote is pointing at the right process. */
10922 set_general_process ();
10924 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
10926 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10927 if (*reply
== '\0')
10931 ULONGEST min_insn_len
;
10933 unpack_varlen_hex (reply
, &min_insn_len
);
10935 return (int) min_insn_len
;
10940 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
10942 struct remote_state
*rs
= get_remote_state ();
10944 char *buf
= rs
->buf
;
10945 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10948 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
10951 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
10952 nbytes
= bin2hex (user
, buf
, 0);
10958 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
10959 nbytes
= bin2hex (notes
, buf
, 0);
10965 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
10966 nbytes
= bin2hex (stop_notes
, buf
, 0);
10970 /* Ensure the buffer is terminated. */
10974 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10975 if (*reply
== '\0')
10978 if (strcmp (reply
, "OK") != 0)
10979 error (_("Bogus reply from target: %s"), reply
);
10985 remote_use_agent (int use
)
10987 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
10989 struct remote_state
*rs
= get_remote_state ();
10991 /* If the stub supports QAgent. */
10992 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
10994 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10996 if (strcmp (rs
->buf
, "OK") == 0)
11007 remote_can_use_agent (void)
11009 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11013 init_remote_ops (void)
11015 remote_ops
.to_shortname
= "remote";
11016 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11017 remote_ops
.to_doc
=
11018 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11019 Specify the serial device it is connected to\n\
11020 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11021 remote_ops
.to_open
= remote_open
;
11022 remote_ops
.to_close
= remote_close
;
11023 remote_ops
.to_detach
= remote_detach
;
11024 remote_ops
.to_disconnect
= remote_disconnect
;
11025 remote_ops
.to_resume
= remote_resume
;
11026 remote_ops
.to_wait
= remote_wait
;
11027 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11028 remote_ops
.to_store_registers
= remote_store_registers
;
11029 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11030 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11031 remote_ops
.to_files_info
= remote_files_info
;
11032 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11033 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11034 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11035 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11036 remote_ops
.to_watchpoint_addr_within_range
=
11037 remote_watchpoint_addr_within_range
;
11038 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11039 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11040 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11041 remote_ops
.to_region_ok_for_hw_watchpoint
11042 = remote_region_ok_for_hw_watchpoint
;
11043 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11044 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11045 remote_ops
.to_kill
= remote_kill
;
11046 remote_ops
.to_load
= generic_load
;
11047 remote_ops
.to_mourn_inferior
= remote_mourn
;
11048 remote_ops
.to_pass_signals
= remote_pass_signals
;
11049 remote_ops
.to_program_signals
= remote_program_signals
;
11050 remote_ops
.to_thread_alive
= remote_thread_alive
;
11051 remote_ops
.to_find_new_threads
= remote_threads_info
;
11052 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11053 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11054 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11055 remote_ops
.to_stop
= remote_stop
;
11056 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11057 remote_ops
.to_rcmd
= remote_rcmd
;
11058 remote_ops
.to_log_command
= serial_log_command
;
11059 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11060 remote_ops
.to_stratum
= process_stratum
;
11061 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11062 remote_ops
.to_has_memory
= default_child_has_memory
;
11063 remote_ops
.to_has_stack
= default_child_has_stack
;
11064 remote_ops
.to_has_registers
= default_child_has_registers
;
11065 remote_ops
.to_has_execution
= default_child_has_execution
;
11066 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11067 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11068 remote_ops
.to_magic
= OPS_MAGIC
;
11069 remote_ops
.to_memory_map
= remote_memory_map
;
11070 remote_ops
.to_flash_erase
= remote_flash_erase
;
11071 remote_ops
.to_flash_done
= remote_flash_done
;
11072 remote_ops
.to_read_description
= remote_read_description
;
11073 remote_ops
.to_search_memory
= remote_search_memory
;
11074 remote_ops
.to_can_async_p
= remote_can_async_p
;
11075 remote_ops
.to_is_async_p
= remote_is_async_p
;
11076 remote_ops
.to_async
= remote_async
;
11077 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11078 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11079 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11080 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11081 remote_ops
.to_supports_disable_randomization
11082 = remote_supports_disable_randomization
;
11083 remote_ops
.to_fileio_open
= remote_hostio_open
;
11084 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11085 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11086 remote_ops
.to_fileio_close
= remote_hostio_close
;
11087 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11088 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11089 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11090 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11091 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11092 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11093 remote_ops
.to_trace_init
= remote_trace_init
;
11094 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11095 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11096 remote_ops
.to_download_trace_state_variable
11097 = remote_download_trace_state_variable
;
11098 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11099 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11100 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11101 remote_ops
.to_trace_start
= remote_trace_start
;
11102 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11103 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11104 remote_ops
.to_trace_stop
= remote_trace_stop
;
11105 remote_ops
.to_trace_find
= remote_trace_find
;
11106 remote_ops
.to_get_trace_state_variable_value
11107 = remote_get_trace_state_variable_value
;
11108 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11109 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11110 remote_ops
.to_upload_trace_state_variables
11111 = remote_upload_trace_state_variables
;
11112 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11113 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11114 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11115 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11116 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11117 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11118 remote_ops
.to_verify_memory
= remote_verify_memory
;
11119 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11120 remote_ops
.to_set_permissions
= remote_set_permissions
;
11121 remote_ops
.to_static_tracepoint_marker_at
11122 = remote_static_tracepoint_marker_at
;
11123 remote_ops
.to_static_tracepoint_markers_by_strid
11124 = remote_static_tracepoint_markers_by_strid
;
11125 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11126 remote_ops
.to_use_agent
= remote_use_agent
;
11127 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11130 /* Set up the extended remote vector by making a copy of the standard
11131 remote vector and adding to it. */
11134 init_extended_remote_ops (void)
11136 extended_remote_ops
= remote_ops
;
11138 extended_remote_ops
.to_shortname
= "extended-remote";
11139 extended_remote_ops
.to_longname
=
11140 "Extended remote serial target in gdb-specific protocol";
11141 extended_remote_ops
.to_doc
=
11142 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11143 Specify the serial device it is connected to (e.g. /dev/ttya).";
11144 extended_remote_ops
.to_open
= extended_remote_open
;
11145 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11146 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11147 extended_remote_ops
.to_detach
= extended_remote_detach
;
11148 extended_remote_ops
.to_attach
= extended_remote_attach
;
11149 extended_remote_ops
.to_kill
= extended_remote_kill
;
11150 extended_remote_ops
.to_supports_disable_randomization
11151 = extended_remote_supports_disable_randomization
;
11155 remote_can_async_p (void)
11157 if (!target_async_permitted
)
11158 /* We only enable async when the user specifically asks for it. */
11161 /* We're async whenever the serial device is. */
11162 return serial_can_async_p (remote_desc
);
11166 remote_is_async_p (void)
11168 if (!target_async_permitted
)
11169 /* We only enable async when the user specifically asks for it. */
11172 /* We're async whenever the serial device is. */
11173 return serial_is_async_p (remote_desc
);
11176 /* Pass the SERIAL event on and up to the client. One day this code
11177 will be able to delay notifying the client of an event until the
11178 point where an entire packet has been received. */
11180 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11182 static void *async_client_context
;
11183 static serial_event_ftype remote_async_serial_handler
;
11186 remote_async_serial_handler (struct serial
*scb
, void *context
)
11188 /* Don't propogate error information up to the client. Instead let
11189 the client find out about the error by querying the target. */
11190 async_client_callback (INF_REG_EVENT
, async_client_context
);
11194 remote_async_inferior_event_handler (gdb_client_data data
)
11196 inferior_event_handler (INF_REG_EVENT
, NULL
);
11200 remote_async_get_pending_events_handler (gdb_client_data data
)
11202 remote_get_pending_stop_replies ();
11206 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11207 void *context
), void *context
)
11209 if (callback
!= NULL
)
11211 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11212 async_client_callback
= callback
;
11213 async_client_context
= context
;
11216 serial_async (remote_desc
, NULL
, NULL
);
11220 set_remote_cmd (char *args
, int from_tty
)
11222 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11226 show_remote_cmd (char *args
, int from_tty
)
11228 /* We can't just use cmd_show_list here, because we want to skip
11229 the redundant "show remote Z-packet" and the legacy aliases. */
11230 struct cleanup
*showlist_chain
;
11231 struct cmd_list_element
*list
= remote_show_cmdlist
;
11232 struct ui_out
*uiout
= current_uiout
;
11234 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11235 for (; list
!= NULL
; list
= list
->next
)
11236 if (strcmp (list
->name
, "Z-packet") == 0)
11238 else if (list
->type
== not_set_cmd
)
11239 /* Alias commands are exactly like the original, except they
11240 don't have the normal type. */
11244 struct cleanup
*option_chain
11245 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11247 ui_out_field_string (uiout
, "name", list
->name
);
11248 ui_out_text (uiout
, ": ");
11249 if (list
->type
== show_cmd
)
11250 do_show_command ((char *) NULL
, from_tty
, list
);
11252 cmd_func (list
, NULL
, from_tty
);
11253 /* Close the tuple. */
11254 do_cleanups (option_chain
);
11257 /* Close the tuple. */
11258 do_cleanups (showlist_chain
);
11262 /* Function to be called whenever a new objfile (shlib) is detected. */
11264 remote_new_objfile (struct objfile
*objfile
)
11266 if (remote_desc
!= 0) /* Have a remote connection. */
11267 remote_check_symbols (objfile
);
11270 /* Pull all the tracepoints defined on the target and create local
11271 data structures representing them. We don't want to create real
11272 tracepoints yet, we don't want to mess up the user's existing
11276 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11278 struct remote_state
*rs
= get_remote_state ();
11281 /* Ask for a first packet of tracepoint definition. */
11283 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11285 while (*p
&& *p
!= 'l')
11287 parse_tracepoint_definition (p
, utpp
);
11288 /* Ask for another packet of tracepoint definition. */
11290 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11297 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11299 struct remote_state
*rs
= get_remote_state ();
11302 /* Ask for a first packet of variable definition. */
11304 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11306 while (*p
&& *p
!= 'l')
11308 parse_tsv_definition (p
, utsvp
);
11309 /* Ask for another packet of variable definition. */
11311 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11318 _initialize_remote (void)
11320 struct remote_state
*rs
;
11321 struct cmd_list_element
*cmd
;
11324 /* architecture specific data */
11325 remote_gdbarch_data_handle
=
11326 gdbarch_data_register_post_init (init_remote_state
);
11327 remote_g_packet_data_handle
=
11328 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11330 /* Initialize the per-target state. At the moment there is only one
11331 of these, not one per target. Only one target is active at a
11332 time. The default buffer size is unimportant; it will be expanded
11333 whenever a larger buffer is needed. */
11334 rs
= get_remote_state_raw ();
11335 rs
->buf_size
= 400;
11336 rs
->buf
= xmalloc (rs
->buf_size
);
11338 init_remote_ops ();
11339 add_target (&remote_ops
);
11341 init_extended_remote_ops ();
11342 add_target (&extended_remote_ops
);
11344 /* Hook into new objfile notification. */
11345 observer_attach_new_objfile (remote_new_objfile
);
11346 /* We're no longer interested in notification events of an inferior
11348 observer_attach_inferior_exit (discard_pending_stop_replies
);
11350 /* Set up signal handlers. */
11351 sigint_remote_token
=
11352 create_async_signal_handler (async_remote_interrupt
, NULL
);
11353 sigint_remote_twice_token
=
11354 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11357 init_remote_threadtests ();
11360 /* set/show remote ... */
11362 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11363 Remote protocol specific variables\n\
11364 Configure various remote-protocol specific variables such as\n\
11365 the packets being used"),
11366 &remote_set_cmdlist
, "set remote ",
11367 0 /* allow-unknown */, &setlist
);
11368 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11369 Remote protocol specific variables\n\
11370 Configure various remote-protocol specific variables such as\n\
11371 the packets being used"),
11372 &remote_show_cmdlist
, "show remote ",
11373 0 /* allow-unknown */, &showlist
);
11375 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11376 Compare section data on target to the exec file.\n\
11377 Argument is a single section name (default: all loaded sections)."),
11380 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11381 Send an arbitrary packet to a remote target.\n\
11382 maintenance packet TEXT\n\
11383 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11384 this command sends the string TEXT to the inferior, and displays the\n\
11385 response packet. GDB supplies the initial `$' character, and the\n\
11386 terminating `#' character and checksum."),
11389 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11390 Set whether to send break if interrupted."), _("\
11391 Show whether to send break if interrupted."), _("\
11392 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11393 set_remotebreak
, show_remotebreak
,
11394 &setlist
, &showlist
);
11395 cmd_name
= "remotebreak";
11396 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11397 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11398 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11399 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11400 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11402 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11403 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11405 Set interrupt sequence to remote target."), _("\
11406 Show interrupt sequence to remote target."), _("\
11407 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11408 NULL
, show_interrupt_sequence
,
11409 &remote_set_cmdlist
,
11410 &remote_show_cmdlist
);
11412 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11413 &interrupt_on_connect
, _("\
11414 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11415 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11416 If set, interrupt sequence is sent to remote target."),
11418 &remote_set_cmdlist
, &remote_show_cmdlist
);
11420 /* Install commands for configuring memory read/write packets. */
11422 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11423 Set the maximum number of bytes per memory write packet (deprecated)."),
11425 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11426 Show the maximum number of bytes per memory write packet (deprecated)."),
11428 add_cmd ("memory-write-packet-size", no_class
,
11429 set_memory_write_packet_size
, _("\
11430 Set the maximum number of bytes per memory-write packet.\n\
11431 Specify the number of bytes in a packet or 0 (zero) for the\n\
11432 default packet size. The actual limit is further reduced\n\
11433 dependent on the target. Specify ``fixed'' to disable the\n\
11434 further restriction and ``limit'' to enable that restriction."),
11435 &remote_set_cmdlist
);
11436 add_cmd ("memory-read-packet-size", no_class
,
11437 set_memory_read_packet_size
, _("\
11438 Set the maximum number of bytes per memory-read packet.\n\
11439 Specify the number of bytes in a packet or 0 (zero) for the\n\
11440 default packet size. The actual limit is further reduced\n\
11441 dependent on the target. Specify ``fixed'' to disable the\n\
11442 further restriction and ``limit'' to enable that restriction."),
11443 &remote_set_cmdlist
);
11444 add_cmd ("memory-write-packet-size", no_class
,
11445 show_memory_write_packet_size
,
11446 _("Show the maximum number of bytes per memory-write packet."),
11447 &remote_show_cmdlist
);
11448 add_cmd ("memory-read-packet-size", no_class
,
11449 show_memory_read_packet_size
,
11450 _("Show the maximum number of bytes per memory-read packet."),
11451 &remote_show_cmdlist
);
11453 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11454 &remote_hw_watchpoint_limit
, _("\
11455 Set the maximum number of target hardware watchpoints."), _("\
11456 Show the maximum number of target hardware watchpoints."), _("\
11457 Specify a negative limit for unlimited."),
11458 NULL
, NULL
, /* FIXME: i18n: The maximum
11459 number of target hardware
11460 watchpoints is %s. */
11461 &remote_set_cmdlist
, &remote_show_cmdlist
);
11462 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11463 &remote_hw_watchpoint_length_limit
, _("\
11464 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11465 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11466 Specify a negative limit for unlimited."),
11467 NULL
, NULL
, /* FIXME: i18n: The maximum
11468 length (in bytes) of a target
11469 hardware watchpoint is %s. */
11470 &remote_set_cmdlist
, &remote_show_cmdlist
);
11471 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11472 &remote_hw_breakpoint_limit
, _("\
11473 Set the maximum number of target hardware breakpoints."), _("\
11474 Show the maximum number of target hardware breakpoints."), _("\
11475 Specify a negative limit for unlimited."),
11476 NULL
, NULL
, /* FIXME: i18n: The maximum
11477 number of target hardware
11478 breakpoints is %s. */
11479 &remote_set_cmdlist
, &remote_show_cmdlist
);
11481 add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure
,
11482 &remote_address_size
, _("\
11483 Set the maximum size of the address (in bits) in a memory packet."), _("\
11484 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11486 NULL
, /* FIXME: i18n: */
11487 &setlist
, &showlist
);
11489 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11490 "X", "binary-download", 1);
11492 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11493 "vCont", "verbose-resume", 0);
11495 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11496 "QPassSignals", "pass-signals", 0);
11498 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11499 "QProgramSignals", "program-signals", 0);
11501 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11502 "qSymbol", "symbol-lookup", 0);
11504 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11505 "P", "set-register", 1);
11507 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11508 "p", "fetch-register", 1);
11510 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11511 "Z0", "software-breakpoint", 0);
11513 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11514 "Z1", "hardware-breakpoint", 0);
11516 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11517 "Z2", "write-watchpoint", 0);
11519 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11520 "Z3", "read-watchpoint", 0);
11522 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11523 "Z4", "access-watchpoint", 0);
11525 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11526 "qXfer:auxv:read", "read-aux-vector", 0);
11528 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11529 "qXfer:features:read", "target-features", 0);
11531 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11532 "qXfer:libraries:read", "library-info", 0);
11534 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11535 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11537 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11538 "qXfer:memory-map:read", "memory-map", 0);
11540 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11541 "qXfer:spu:read", "read-spu-object", 0);
11543 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11544 "qXfer:spu:write", "write-spu-object", 0);
11546 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11547 "qXfer:osdata:read", "osdata", 0);
11549 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11550 "qXfer:threads:read", "threads", 0);
11552 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11553 "qXfer:siginfo:read", "read-siginfo-object", 0);
11555 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11556 "qXfer:siginfo:write", "write-siginfo-object", 0);
11558 add_packet_config_cmd
11559 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11560 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11562 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11563 "qXfer:uib:read", "unwind-info-block", 0);
11565 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11566 "qGetTLSAddr", "get-thread-local-storage-address",
11569 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11570 "qGetTIBAddr", "get-thread-information-block-address",
11573 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11574 "bc", "reverse-continue", 0);
11576 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11577 "bs", "reverse-step", 0);
11579 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11580 "qSupported", "supported-packets", 0);
11582 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11583 "qSearch:memory", "search-memory", 0);
11585 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11586 "vFile:open", "hostio-open", 0);
11588 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11589 "vFile:pread", "hostio-pread", 0);
11591 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11592 "vFile:pwrite", "hostio-pwrite", 0);
11594 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11595 "vFile:close", "hostio-close", 0);
11597 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11598 "vFile:unlink", "hostio-unlink", 0);
11600 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11601 "vFile:readlink", "hostio-readlink", 0);
11603 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11604 "vAttach", "attach", 0);
11606 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11609 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11610 "QStartNoAckMode", "noack", 0);
11612 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11613 "vKill", "kill", 0);
11615 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11616 "qAttached", "query-attached", 0);
11618 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11619 "ConditionalTracepoints",
11620 "conditional-tracepoints", 0);
11622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11623 "ConditionalBreakpoints",
11624 "conditional-breakpoints", 0);
11626 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11627 "BreakpointCommands",
11628 "breakpoint-commands", 0);
11630 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11631 "FastTracepoints", "fast-tracepoints", 0);
11633 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11634 "TracepointSource", "TracepointSource", 0);
11636 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11637 "QAllow", "allow", 0);
11639 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11640 "StaticTracepoints", "static-tracepoints", 0);
11642 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11643 "InstallInTrace", "install-in-trace", 0);
11645 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11646 "qXfer:statictrace:read", "read-sdata-object", 0);
11648 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11649 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11651 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11652 "QDisableRandomization", "disable-randomization", 0);
11654 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11655 "QAgent", "agent", 0);
11657 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11658 Z sub-packet has its own set and show commands, but users may
11659 have sets to this variable in their .gdbinit files (or in their
11661 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11662 &remote_Z_packet_detect
, _("\
11663 Set use of remote protocol `Z' packets"), _("\
11664 Show use of remote protocol `Z' packets "), _("\
11665 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11667 set_remote_protocol_Z_packet_cmd
,
11668 show_remote_protocol_Z_packet_cmd
,
11669 /* FIXME: i18n: Use of remote protocol
11670 `Z' packets is %s. */
11671 &remote_set_cmdlist
, &remote_show_cmdlist
);
11673 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11674 Manipulate files on the remote system\n\
11675 Transfer files to and from the remote target system."),
11676 &remote_cmdlist
, "remote ",
11677 0 /* allow-unknown */, &cmdlist
);
11679 add_cmd ("put", class_files
, remote_put_command
,
11680 _("Copy a local file to the remote system."),
11683 add_cmd ("get", class_files
, remote_get_command
,
11684 _("Copy a remote file to the local system."),
11687 add_cmd ("delete", class_files
, remote_delete_command
,
11688 _("Delete a remote file."),
11691 remote_exec_file
= xstrdup ("");
11692 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11693 &remote_exec_file
, _("\
11694 Set the remote pathname for \"run\""), _("\
11695 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11696 &remote_set_cmdlist
, &remote_show_cmdlist
);
11698 /* Eventually initialize fileio. See fileio.c */
11699 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11701 /* Take advantage of the fact that the LWP field is not used, to tag
11702 special ptids with it set to != 0. */
11703 magic_null_ptid
= ptid_build (42000, 1, -1);
11704 not_sent_ptid
= ptid_build (42000, 1, -2);
11705 any_thread_ptid
= ptid_build (42000, 1, 0);
11707 target_buf_size
= 2048;
11708 target_buf
= xmalloc (target_buf_size
);