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
,
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 (int pid
);
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 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 /* We're no longer interested in any of these events. */
3026 discard_pending_stop_replies (-1);
3028 if (remote_async_inferior_event_token
)
3029 delete_async_event_handler (&remote_async_inferior_event_token
);
3030 if (remote_async_get_pending_events_token
)
3031 delete_async_event_handler (&remote_async_get_pending_events_token
);
3034 /* Query the remote side for the text, data and bss offsets. */
3039 struct remote_state
*rs
= get_remote_state ();
3042 int lose
, num_segments
= 0, do_sections
, do_segments
;
3043 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3044 struct section_offsets
*offs
;
3045 struct symfile_segment_data
*data
;
3047 if (symfile_objfile
== NULL
)
3050 putpkt ("qOffsets");
3051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3054 if (buf
[0] == '\000')
3055 return; /* Return silently. Stub doesn't support
3059 warning (_("Remote failure reply: %s"), buf
);
3063 /* Pick up each field in turn. This used to be done with scanf, but
3064 scanf will make trouble if CORE_ADDR size doesn't match
3065 conversion directives correctly. The following code will work
3066 with any size of CORE_ADDR. */
3067 text_addr
= data_addr
= bss_addr
= 0;
3071 if (strncmp (ptr
, "Text=", 5) == 0)
3074 /* Don't use strtol, could lose on big values. */
3075 while (*ptr
&& *ptr
!= ';')
3076 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3078 if (strncmp (ptr
, ";Data=", 6) == 0)
3081 while (*ptr
&& *ptr
!= ';')
3082 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3087 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3090 while (*ptr
&& *ptr
!= ';')
3091 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3093 if (bss_addr
!= data_addr
)
3094 warning (_("Target reported unsupported offsets: %s"), buf
);
3099 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3102 /* Don't use strtol, could lose on big values. */
3103 while (*ptr
&& *ptr
!= ';')
3104 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3107 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3110 while (*ptr
&& *ptr
!= ';')
3111 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3119 error (_("Malformed response to offset query, %s"), buf
);
3120 else if (*ptr
!= '\0')
3121 warning (_("Target reported unsupported offsets: %s"), buf
);
3123 offs
= ((struct section_offsets
*)
3124 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3125 memcpy (offs
, symfile_objfile
->section_offsets
,
3126 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3128 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3129 do_segments
= (data
!= NULL
);
3130 do_sections
= num_segments
== 0;
3132 if (num_segments
> 0)
3134 segments
[0] = text_addr
;
3135 segments
[1] = data_addr
;
3137 /* If we have two segments, we can still try to relocate everything
3138 by assuming that the .text and .data offsets apply to the whole
3139 text and data segments. Convert the offsets given in the packet
3140 to base addresses for symfile_map_offsets_to_segments. */
3141 else if (data
&& data
->num_segments
== 2)
3143 segments
[0] = data
->segment_bases
[0] + text_addr
;
3144 segments
[1] = data
->segment_bases
[1] + data_addr
;
3147 /* If the object file has only one segment, assume that it is text
3148 rather than data; main programs with no writable data are rare,
3149 but programs with no code are useless. Of course the code might
3150 have ended up in the data segment... to detect that we would need
3151 the permissions here. */
3152 else if (data
&& data
->num_segments
== 1)
3154 segments
[0] = data
->segment_bases
[0] + text_addr
;
3157 /* There's no way to relocate by segment. */
3163 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3164 offs
, num_segments
, segments
);
3166 if (ret
== 0 && !do_sections
)
3167 error (_("Can not handle qOffsets TextSeg "
3168 "response with this symbol file"));
3175 free_symfile_segment_data (data
);
3179 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3181 /* This is a temporary kludge to force data and bss to use the
3182 same offsets because that's what nlmconv does now. The real
3183 solution requires changes to the stub and remote.c that I
3184 don't have time to do right now. */
3186 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3187 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3190 objfile_relocate (symfile_objfile
, offs
);
3193 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3194 threads we know are stopped already. This is used during the
3195 initial remote connection in non-stop mode --- threads that are
3196 reported as already being stopped are left stopped. */
3199 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3201 /* If we have a stop reply for this thread, it must be stopped. */
3202 if (peek_stop_reply (thread
->ptid
))
3203 set_stop_requested (thread
->ptid
, 1);
3208 /* Send interrupt_sequence to remote target. */
3210 send_interrupt_sequence (void)
3212 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3213 serial_write (remote_desc
, "\x03", 1);
3214 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3215 serial_send_break (remote_desc
);
3216 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3218 serial_send_break (remote_desc
);
3219 serial_write (remote_desc
, "g", 1);
3222 internal_error (__FILE__
, __LINE__
,
3223 _("Invalid value for interrupt_sequence_mode: %s."),
3224 interrupt_sequence_mode
);
3227 /* Query the remote target for which is the current thread/process,
3228 add it to our tables, and update INFERIOR_PTID. The caller is
3229 responsible for setting the state such that the remote end is ready
3230 to return the current thread. */
3233 add_current_inferior_and_thread (void)
3235 struct remote_state
*rs
= get_remote_state ();
3239 inferior_ptid
= null_ptid
;
3241 /* Now, if we have thread information, update inferior_ptid. */
3242 ptid
= remote_current_thread (inferior_ptid
);
3243 if (!ptid_equal (ptid
, null_ptid
))
3245 if (!remote_multi_process_p (rs
))
3248 inferior_ptid
= ptid
;
3252 /* Without this, some commands which require an active target
3253 (such as kill) won't work. This variable serves (at least)
3254 double duty as both the pid of the target process (if it has
3255 such), and as a flag indicating that a target is active. */
3256 inferior_ptid
= magic_null_ptid
;
3260 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3262 /* Add the main thread. */
3263 add_thread_silent (inferior_ptid
);
3267 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3269 struct remote_state
*rs
= get_remote_state ();
3270 struct packet_config
*noack_config
;
3271 char *wait_status
= NULL
;
3273 immediate_quit
++; /* Allow user to interrupt it. */
3275 if (interrupt_on_connect
)
3276 send_interrupt_sequence ();
3278 /* Ack any packet which the remote side has already sent. */
3279 serial_write (remote_desc
, "+", 1);
3281 /* Signal other parts that we're going through the initial setup,
3282 and so things may not be stable yet. */
3283 rs
->starting_up
= 1;
3285 /* The first packet we send to the target is the optional "supported
3286 packets" request. If the target can answer this, it will tell us
3287 which later probes to skip. */
3288 remote_query_supported ();
3290 /* If the stub wants to get a QAllow, compose one and send it. */
3291 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3292 remote_set_permissions ();
3294 /* Next, we possibly activate noack mode.
3296 If the QStartNoAckMode packet configuration is set to AUTO,
3297 enable noack mode if the stub reported a wish for it with
3300 If set to TRUE, then enable noack mode even if the stub didn't
3301 report it in qSupported. If the stub doesn't reply OK, the
3302 session ends with an error.
3304 If FALSE, then don't activate noack mode, regardless of what the
3305 stub claimed should be the default with qSupported. */
3307 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3309 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3310 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3311 && noack_config
->support
== PACKET_ENABLE
))
3313 putpkt ("QStartNoAckMode");
3314 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3315 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3321 /* Tell the remote that we are using the extended protocol. */
3323 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3326 /* Let the target know which signals it is allowed to pass down to
3328 update_signals_program_target ();
3330 /* Next, if the target can specify a description, read it. We do
3331 this before anything involving memory or registers. */
3332 target_find_description ();
3334 /* Next, now that we know something about the target, update the
3335 address spaces in the program spaces. */
3336 update_address_spaces ();
3338 /* On OSs where the list of libraries is global to all
3339 processes, we fetch them early. */
3340 if (gdbarch_has_global_solist (target_gdbarch
))
3341 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3345 if (!rs
->non_stop_aware
)
3346 error (_("Non-stop mode requested, but remote "
3347 "does not support non-stop"));
3349 putpkt ("QNonStop:1");
3350 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3352 if (strcmp (rs
->buf
, "OK") != 0)
3353 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3355 /* Find about threads and processes the stub is already
3356 controlling. We default to adding them in the running state.
3357 The '?' query below will then tell us about which threads are
3359 remote_threads_info (target
);
3361 else if (rs
->non_stop_aware
)
3363 /* Don't assume that the stub can operate in all-stop mode.
3364 Request it explicitely. */
3365 putpkt ("QNonStop:0");
3366 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3368 if (strcmp (rs
->buf
, "OK") != 0)
3369 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3372 /* Check whether the target is running now. */
3374 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3380 struct inferior
*inf
;
3382 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3385 error (_("The target is not running (try extended-remote?)"));
3387 /* We're connected, but not running. Drop out before we
3388 call start_remote. */
3389 rs
->starting_up
= 0;
3394 /* Save the reply for later. */
3395 wait_status
= alloca (strlen (rs
->buf
) + 1);
3396 strcpy (wait_status
, rs
->buf
);
3399 /* Let the stub know that we want it to return the thread. */
3400 set_continue_thread (minus_one_ptid
);
3402 add_current_inferior_and_thread ();
3404 /* init_wait_for_inferior should be called before get_offsets in order
3405 to manage `inserted' flag in bp loc in a correct state.
3406 breakpoint_init_inferior, called from init_wait_for_inferior, set
3407 `inserted' flag to 0, while before breakpoint_re_set, called from
3408 start_remote, set `inserted' flag to 1. In the initialization of
3409 inferior, breakpoint_init_inferior should be called first, and then
3410 breakpoint_re_set can be called. If this order is broken, state of
3411 `inserted' flag is wrong, and cause some problems on breakpoint
3413 init_wait_for_inferior ();
3415 get_offsets (); /* Get text, data & bss offsets. */
3417 /* If we could not find a description using qXfer, and we know
3418 how to do it some other way, try again. This is not
3419 supported for non-stop; it could be, but it is tricky if
3420 there are no stopped threads when we connect. */
3421 if (remote_read_description_p (target
)
3422 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3424 target_clear_description ();
3425 target_find_description ();
3428 /* Use the previously fetched status. */
3429 gdb_assert (wait_status
!= NULL
);
3430 strcpy (rs
->buf
, wait_status
);
3431 rs
->cached_wait_status
= 1;
3434 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3438 /* Clear WFI global state. Do this before finding about new
3439 threads and inferiors, and setting the current inferior.
3440 Otherwise we would clear the proceed status of the current
3441 inferior when we want its stop_soon state to be preserved
3442 (see notice_new_inferior). */
3443 init_wait_for_inferior ();
3445 /* In non-stop, we will either get an "OK", meaning that there
3446 are no stopped threads at this time; or, a regular stop
3447 reply. In the latter case, there may be more than one thread
3448 stopped --- we pull them all out using the vStopped
3450 if (strcmp (rs
->buf
, "OK") != 0)
3452 struct stop_reply
*stop_reply
;
3453 struct cleanup
*old_chain
;
3455 stop_reply
= stop_reply_xmalloc ();
3456 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3458 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3459 discard_cleanups (old_chain
);
3461 /* get_pending_stop_replies acks this one, and gets the rest
3463 pending_stop_reply
= stop_reply
;
3464 remote_get_pending_stop_replies ();
3466 /* Make sure that threads that were stopped remain
3468 iterate_over_threads (set_stop_requested_callback
, NULL
);
3471 if (target_can_async_p ())
3472 target_async (inferior_event_handler
, 0);
3474 if (thread_count () == 0)
3477 error (_("The target is not running (try extended-remote?)"));
3479 /* We're connected, but not running. Drop out before we
3480 call start_remote. */
3481 rs
->starting_up
= 0;
3485 /* Let the stub know that we want it to return the thread. */
3487 /* Force the stub to choose a thread. */
3488 set_general_thread (null_ptid
);
3491 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3492 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3493 error (_("remote didn't report the current thread in non-stop mode"));
3495 get_offsets (); /* Get text, data & bss offsets. */
3497 /* In non-stop mode, any cached wait status will be stored in
3498 the stop reply queue. */
3499 gdb_assert (wait_status
== NULL
);
3501 /* Report all signals during attach/startup. */
3502 remote_pass_signals (0, NULL
);
3505 /* If we connected to a live target, do some additional setup. */
3506 if (target_has_execution
)
3508 if (exec_bfd
) /* No use without an exec file. */
3509 remote_check_symbols (symfile_objfile
);
3512 /* Possibly the target has been engaged in a trace run started
3513 previously; find out where things are at. */
3514 if (remote_get_trace_status (current_trace_status ()) != -1)
3516 struct uploaded_tp
*uploaded_tps
= NULL
;
3517 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3519 if (current_trace_status ()->running
)
3520 printf_filtered (_("Trace is already running on the target.\n"));
3522 /* Get trace state variables first, they may be checked when
3523 parsing uploaded commands. */
3525 remote_upload_trace_state_variables (&uploaded_tsvs
);
3527 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3529 remote_upload_tracepoints (&uploaded_tps
);
3531 merge_uploaded_tracepoints (&uploaded_tps
);
3534 /* The thread and inferior lists are now synchronized with the
3535 target, our symbols have been relocated, and we're merged the
3536 target's tracepoints with ours. We're done with basic start
3538 rs
->starting_up
= 0;
3540 /* If breakpoints are global, insert them now. */
3541 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3542 && breakpoints_always_inserted_mode ())
3543 insert_breakpoints ();
3546 /* Open a connection to a remote debugger.
3547 NAME is the filename used for communication. */
3550 remote_open (char *name
, int from_tty
)
3552 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3555 /* Open a connection to a remote debugger using the extended
3556 remote gdb protocol. NAME is the filename used for communication. */
3559 extended_remote_open (char *name
, int from_tty
)
3561 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3564 /* Generic code for opening a connection to a remote target. */
3567 init_all_packet_configs (void)
3571 for (i
= 0; i
< PACKET_MAX
; i
++)
3572 update_packet_config (&remote_protocol_packets
[i
]);
3575 /* Symbol look-up. */
3578 remote_check_symbols (struct objfile
*objfile
)
3580 struct remote_state
*rs
= get_remote_state ();
3581 char *msg
, *reply
, *tmp
;
3582 struct minimal_symbol
*sym
;
3585 /* The remote side has no concept of inferiors that aren't running
3586 yet, it only knows about running processes. If we're connected
3587 but our current inferior is not running, we should not invite the
3588 remote target to request symbol lookups related to its
3589 (unrelated) current process. */
3590 if (!target_has_execution
)
3593 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3596 /* Make sure the remote is pointing at the right process. Note
3597 there's no way to select "no process". */
3598 set_general_process ();
3600 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3601 because we need both at the same time. */
3602 msg
= alloca (get_remote_packet_size ());
3604 /* Invite target to request symbol lookups. */
3606 putpkt ("qSymbol::");
3607 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3608 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3611 while (strncmp (reply
, "qSymbol:", 8) == 0)
3614 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3616 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3618 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3621 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3622 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3624 /* If this is a function address, return the start of code
3625 instead of any data function descriptor. */
3626 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3630 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3631 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3635 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3640 static struct serial
*
3641 remote_serial_open (char *name
)
3643 static int udp_warning
= 0;
3645 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3646 of in ser-tcp.c, because it is the remote protocol assuming that the
3647 serial connection is reliable and not the serial connection promising
3649 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3651 warning (_("The remote protocol may be unreliable over UDP.\n"
3652 "Some events may be lost, rendering further debugging "
3657 return serial_open (name
);
3660 /* Inform the target of our permission settings. The permission flags
3661 work without this, but if the target knows the settings, it can do
3662 a couple things. First, it can add its own check, to catch cases
3663 that somehow manage to get by the permissions checks in target
3664 methods. Second, if the target is wired to disallow particular
3665 settings (for instance, a system in the field that is not set up to
3666 be able to stop at a breakpoint), it can object to any unavailable
3670 remote_set_permissions (void)
3672 struct remote_state
*rs
= get_remote_state ();
3674 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3675 "WriteReg:%x;WriteMem:%x;"
3676 "InsertBreak:%x;InsertTrace:%x;"
3677 "InsertFastTrace:%x;Stop:%x",
3678 may_write_registers
, may_write_memory
,
3679 may_insert_breakpoints
, may_insert_tracepoints
,
3680 may_insert_fast_tracepoints
, may_stop
);
3682 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3684 /* If the target didn't like the packet, warn the user. Do not try
3685 to undo the user's settings, that would just be maddening. */
3686 if (strcmp (rs
->buf
, "OK") != 0)
3687 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3690 /* This type describes each known response to the qSupported
3692 struct protocol_feature
3694 /* The name of this protocol feature. */
3697 /* The default for this protocol feature. */
3698 enum packet_support default_support
;
3700 /* The function to call when this feature is reported, or after
3701 qSupported processing if the feature is not supported.
3702 The first argument points to this structure. The second
3703 argument indicates whether the packet requested support be
3704 enabled, disabled, or probed (or the default, if this function
3705 is being called at the end of processing and this feature was
3706 not reported). The third argument may be NULL; if not NULL, it
3707 is a NUL-terminated string taken from the packet following
3708 this feature's name and an equals sign. */
3709 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3712 /* The corresponding packet for this feature. Only used if
3713 FUNC is remote_supported_packet. */
3718 remote_supported_packet (const struct protocol_feature
*feature
,
3719 enum packet_support support
,
3720 const char *argument
)
3724 warning (_("Remote qSupported response supplied an unexpected value for"
3725 " \"%s\"."), feature
->name
);
3729 if (remote_protocol_packets
[feature
->packet
].support
3730 == PACKET_SUPPORT_UNKNOWN
)
3731 remote_protocol_packets
[feature
->packet
].support
= support
;
3735 remote_packet_size (const struct protocol_feature
*feature
,
3736 enum packet_support support
, const char *value
)
3738 struct remote_state
*rs
= get_remote_state ();
3743 if (support
!= PACKET_ENABLE
)
3746 if (value
== NULL
|| *value
== '\0')
3748 warning (_("Remote target reported \"%s\" without a size."),
3754 packet_size
= strtol (value
, &value_end
, 16);
3755 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3757 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3758 feature
->name
, value
);
3762 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3764 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3765 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3766 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3769 /* Record the new maximum packet size. */
3770 rs
->explicit_packet_size
= packet_size
;
3774 remote_multi_process_feature (const struct protocol_feature
*feature
,
3775 enum packet_support support
, const char *value
)
3777 struct remote_state
*rs
= get_remote_state ();
3779 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3783 remote_non_stop_feature (const struct protocol_feature
*feature
,
3784 enum packet_support support
, const char *value
)
3786 struct remote_state
*rs
= get_remote_state ();
3788 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3792 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3793 enum packet_support support
,
3796 struct remote_state
*rs
= get_remote_state ();
3798 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3802 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3803 enum packet_support support
,
3806 struct remote_state
*rs
= get_remote_state ();
3808 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3812 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3813 enum packet_support support
,
3816 struct remote_state
*rs
= get_remote_state ();
3818 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3822 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3823 enum packet_support support
,
3826 struct remote_state
*rs
= get_remote_state ();
3828 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3832 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3833 enum packet_support support
,
3836 struct remote_state
*rs
= get_remote_state ();
3838 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3842 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3843 enum packet_support support
,
3846 struct remote_state
*rs
= get_remote_state ();
3848 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3852 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3853 enum packet_support support
,
3856 struct remote_state
*rs
= get_remote_state ();
3858 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3862 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3863 enum packet_support support
,
3866 struct remote_state
*rs
= get_remote_state ();
3868 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3872 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3873 enum packet_support support
,
3876 struct remote_state
*rs
= get_remote_state ();
3878 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3881 static struct protocol_feature remote_protocol_features
[] = {
3882 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3883 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3884 PACKET_qXfer_auxv
},
3885 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3886 PACKET_qXfer_features
},
3887 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3888 PACKET_qXfer_libraries
},
3889 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3890 PACKET_qXfer_libraries_svr4
},
3891 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3892 PACKET_qXfer_memory_map
},
3893 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3894 PACKET_qXfer_spu_read
},
3895 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3896 PACKET_qXfer_spu_write
},
3897 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3898 PACKET_qXfer_osdata
},
3899 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3900 PACKET_qXfer_threads
},
3901 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3902 PACKET_qXfer_traceframe_info
},
3903 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3904 PACKET_QPassSignals
},
3905 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3906 PACKET_QProgramSignals
},
3907 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3908 PACKET_QStartNoAckMode
},
3909 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3910 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3911 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3912 PACKET_qXfer_siginfo_read
},
3913 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3914 PACKET_qXfer_siginfo_write
},
3915 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3916 PACKET_ConditionalTracepoints
},
3917 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3918 PACKET_ConditionalBreakpoints
},
3919 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3920 PACKET_BreakpointCommands
},
3921 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3922 PACKET_FastTracepoints
},
3923 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3924 PACKET_StaticTracepoints
},
3925 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3926 PACKET_InstallInTrace
},
3927 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3929 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3931 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3933 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3934 PACKET_TracepointSource
},
3935 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3937 { "EnableDisableTracepoints", PACKET_DISABLE
,
3938 remote_enable_disable_tracepoint_feature
, -1 },
3939 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3940 PACKET_qXfer_fdpic
},
3941 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3943 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3944 PACKET_QDisableRandomization
},
3945 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3946 { "tracenz", PACKET_DISABLE
,
3947 remote_string_tracing_feature
, -1 },
3950 static char *remote_support_xml
;
3952 /* Register string appended to "xmlRegisters=" in qSupported query. */
3955 register_remote_support_xml (const char *xml
)
3957 #if defined(HAVE_LIBEXPAT)
3958 if (remote_support_xml
== NULL
)
3959 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3962 char *copy
= xstrdup (remote_support_xml
+ 13);
3963 char *p
= strtok (copy
, ",");
3967 if (strcmp (p
, xml
) == 0)
3974 while ((p
= strtok (NULL
, ",")) != NULL
);
3977 remote_support_xml
= reconcat (remote_support_xml
,
3978 remote_support_xml
, ",", xml
,
3985 remote_query_supported_append (char *msg
, const char *append
)
3988 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3990 return xstrdup (append
);
3994 remote_query_supported (void)
3996 struct remote_state
*rs
= get_remote_state ();
3999 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4001 /* The packet support flags are handled differently for this packet
4002 than for most others. We treat an error, a disabled packet, and
4003 an empty response identically: any features which must be reported
4004 to be used will be automatically disabled. An empty buffer
4005 accomplishes this, since that is also the representation for a list
4006 containing no features. */
4009 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4012 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4014 q
= remote_query_supported_append (q
, "multiprocess+");
4016 if (remote_support_xml
)
4017 q
= remote_query_supported_append (q
, remote_support_xml
);
4019 q
= remote_query_supported_append (q
, "qRelocInsn+");
4021 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4024 do_cleanups (old_chain
);
4026 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4028 /* If an error occured, warn, but do not return - just reset the
4029 buffer to empty and go on to disable features. */
4030 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4033 warning (_("Remote failure reply: %s"), rs
->buf
);
4038 memset (seen
, 0, sizeof (seen
));
4043 enum packet_support is_supported
;
4044 char *p
, *end
, *name_end
, *value
;
4046 /* First separate out this item from the rest of the packet. If
4047 there's another item after this, we overwrite the separator
4048 (terminated strings are much easier to work with). */
4050 end
= strchr (p
, ';');
4053 end
= p
+ strlen (p
);
4063 warning (_("empty item in \"qSupported\" response"));
4068 name_end
= strchr (p
, '=');
4071 /* This is a name=value entry. */
4072 is_supported
= PACKET_ENABLE
;
4073 value
= name_end
+ 1;
4082 is_supported
= PACKET_ENABLE
;
4086 is_supported
= PACKET_DISABLE
;
4090 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4094 warning (_("unrecognized item \"%s\" "
4095 "in \"qSupported\" response"), p
);
4101 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4102 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4104 const struct protocol_feature
*feature
;
4107 feature
= &remote_protocol_features
[i
];
4108 feature
->func (feature
, is_supported
, value
);
4113 /* If we increased the packet size, make sure to increase the global
4114 buffer size also. We delay this until after parsing the entire
4115 qSupported packet, because this is the same buffer we were
4117 if (rs
->buf_size
< rs
->explicit_packet_size
)
4119 rs
->buf_size
= rs
->explicit_packet_size
;
4120 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4123 /* Handle the defaults for unmentioned features. */
4124 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4127 const struct protocol_feature
*feature
;
4129 feature
= &remote_protocol_features
[i
];
4130 feature
->func (feature
, feature
->default_support
, NULL
);
4136 remote_open_1 (char *name
, int from_tty
,
4137 struct target_ops
*target
, int extended_p
)
4139 struct remote_state
*rs
= get_remote_state ();
4142 error (_("To open a remote debug connection, you need to specify what\n"
4143 "serial device is attached to the remote system\n"
4144 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4146 /* See FIXME above. */
4147 if (!target_async_permitted
)
4148 wait_forever_enabled_p
= 1;
4150 /* If we're connected to a running target, target_preopen will kill it.
4151 But if we're connected to a target system with no running process,
4152 then we will still be connected when it returns. Ask this question
4153 first, before target_preopen has a chance to kill anything. */
4154 if (remote_desc
!= NULL
&& !have_inferiors ())
4157 || query (_("Already connected to a remote target. Disconnect? ")))
4160 error (_("Still connected."));
4163 target_preopen (from_tty
);
4165 unpush_target (target
);
4167 /* This time without a query. If we were connected to an
4168 extended-remote target and target_preopen killed the running
4169 process, we may still be connected. If we are starting "target
4170 remote" now, the extended-remote target will not have been
4171 removed by unpush_target. */
4172 if (remote_desc
!= NULL
&& !have_inferiors ())
4175 /* Make sure we send the passed signals list the next time we resume. */
4176 xfree (last_pass_packet
);
4177 last_pass_packet
= NULL
;
4179 /* Make sure we send the program signals list the next time we
4181 xfree (last_program_signals_packet
);
4182 last_program_signals_packet
= NULL
;
4184 remote_fileio_reset ();
4185 reopen_exec_file ();
4188 remote_desc
= remote_serial_open (name
);
4190 perror_with_name (name
);
4192 if (baud_rate
!= -1)
4194 if (serial_setbaudrate (remote_desc
, baud_rate
))
4196 /* The requested speed could not be set. Error out to
4197 top level after closing remote_desc. Take care to
4198 set remote_desc to NULL to avoid closing remote_desc
4200 serial_close (remote_desc
);
4202 perror_with_name (name
);
4206 serial_raw (remote_desc
);
4208 /* If there is something sitting in the buffer we might take it as a
4209 response to a command, which would be bad. */
4210 serial_flush_input (remote_desc
);
4214 puts_filtered ("Remote debugging using ");
4215 puts_filtered (name
);
4216 puts_filtered ("\n");
4218 push_target (target
); /* Switch to using remote target now. */
4220 /* Register extra event sources in the event loop. */
4221 remote_async_inferior_event_token
4222 = create_async_event_handler (remote_async_inferior_event_handler
,
4224 remote_async_get_pending_events_token
4225 = create_async_event_handler (remote_async_get_pending_events_handler
,
4228 /* Reset the target state; these things will be queried either by
4229 remote_query_supported or as they are needed. */
4230 init_all_packet_configs ();
4231 rs
->cached_wait_status
= 0;
4232 rs
->explicit_packet_size
= 0;
4234 rs
->multi_process_aware
= 0;
4235 rs
->extended
= extended_p
;
4236 rs
->non_stop_aware
= 0;
4237 rs
->waiting_for_stop_reply
= 0;
4238 rs
->ctrlc_pending_p
= 0;
4240 general_thread
= not_sent_ptid
;
4241 continue_thread
= not_sent_ptid
;
4242 remote_traceframe_number
= -1;
4244 /* Probe for ability to use "ThreadInfo" query, as required. */
4245 use_threadinfo_query
= 1;
4246 use_threadextra_query
= 1;
4248 if (target_async_permitted
)
4250 /* With this target we start out by owning the terminal. */
4251 remote_async_terminal_ours_p
= 1;
4253 /* FIXME: cagney/1999-09-23: During the initial connection it is
4254 assumed that the target is already ready and able to respond to
4255 requests. Unfortunately remote_start_remote() eventually calls
4256 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4257 around this. Eventually a mechanism that allows
4258 wait_for_inferior() to expect/get timeouts will be
4260 wait_forever_enabled_p
= 0;
4263 /* First delete any symbols previously loaded from shared libraries. */
4264 no_shared_libraries (NULL
, 0);
4267 init_thread_list ();
4269 /* Start the remote connection. If error() or QUIT, discard this
4270 target (we'd otherwise be in an inconsistent state) and then
4271 propogate the error on up the exception chain. This ensures that
4272 the caller doesn't stumble along blindly assuming that the
4273 function succeeded. The CLI doesn't have this problem but other
4274 UI's, such as MI do.
4276 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4277 this function should return an error indication letting the
4278 caller restore the previous state. Unfortunately the command
4279 ``target remote'' is directly wired to this function making that
4280 impossible. On a positive note, the CLI side of this problem has
4281 been fixed - the function set_cmd_context() makes it possible for
4282 all the ``target ....'' commands to share a common callback
4283 function. See cli-dump.c. */
4285 volatile struct gdb_exception ex
;
4287 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4289 remote_start_remote (from_tty
, target
, extended_p
);
4293 /* Pop the partially set up target - unless something else did
4294 already before throwing the exception. */
4295 if (remote_desc
!= NULL
)
4297 if (target_async_permitted
)
4298 wait_forever_enabled_p
= 1;
4299 throw_exception (ex
);
4303 if (target_async_permitted
)
4304 wait_forever_enabled_p
= 1;
4307 /* This takes a program previously attached to and detaches it. After
4308 this is done, GDB can be used to debug some other program. We
4309 better not have left any breakpoints in the target program or it'll
4310 die when it hits one. */
4313 remote_detach_1 (char *args
, int from_tty
, int extended
)
4315 int pid
= ptid_get_pid (inferior_ptid
);
4316 struct remote_state
*rs
= get_remote_state ();
4319 error (_("Argument given to \"detach\" when remotely debugging."));
4321 if (!target_has_execution
)
4322 error (_("No process to detach from."));
4326 char *exec_file
= get_exec_file (0);
4327 if (exec_file
== NULL
)
4329 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4330 target_pid_to_str (pid_to_ptid (pid
)));
4331 gdb_flush (gdb_stdout
);
4334 /* Tell the remote target to detach. */
4335 if (remote_multi_process_p (rs
))
4336 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4338 strcpy (rs
->buf
, "D");
4341 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4343 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4345 else if (rs
->buf
[0] == '\0')
4346 error (_("Remote doesn't know how to detach"));
4348 error (_("Can't detach process."));
4350 if (from_tty
&& !extended
)
4351 puts_filtered (_("Ending remote debugging.\n"));
4353 discard_pending_stop_replies (pid
);
4354 target_mourn_inferior ();
4358 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4360 remote_detach_1 (args
, from_tty
, 0);
4364 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4366 remote_detach_1 (args
, from_tty
, 1);
4369 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4372 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4375 error (_("Argument given to \"disconnect\" when remotely debugging."));
4377 /* Make sure we unpush even the extended remote targets; mourn
4378 won't do it. So call remote_mourn_1 directly instead of
4379 target_mourn_inferior. */
4380 remote_mourn_1 (target
);
4383 puts_filtered ("Ending remote debugging.\n");
4386 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4387 be chatty about it. */
4390 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4392 struct remote_state
*rs
= get_remote_state ();
4394 char *wait_status
= NULL
;
4396 pid
= parse_pid_to_attach (args
);
4398 /* Remote PID can be freely equal to getpid, do not check it here the same
4399 way as in other targets. */
4401 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4402 error (_("This target does not support attaching to a process"));
4406 char *exec_file
= get_exec_file (0);
4409 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4410 target_pid_to_str (pid_to_ptid (pid
)));
4412 printf_unfiltered (_("Attaching to %s\n"),
4413 target_pid_to_str (pid_to_ptid (pid
)));
4415 gdb_flush (gdb_stdout
);
4418 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4420 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4422 if (packet_ok (rs
->buf
,
4423 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4427 /* Save the reply for later. */
4428 wait_status
= alloca (strlen (rs
->buf
) + 1);
4429 strcpy (wait_status
, rs
->buf
);
4431 else if (strcmp (rs
->buf
, "OK") != 0)
4432 error (_("Attaching to %s failed with: %s"),
4433 target_pid_to_str (pid_to_ptid (pid
)),
4436 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4437 error (_("This target does not support attaching to a process"));
4439 error (_("Attaching to %s failed"),
4440 target_pid_to_str (pid_to_ptid (pid
)));
4442 set_current_inferior (remote_add_inferior (0, pid
, 1));
4444 inferior_ptid
= pid_to_ptid (pid
);
4448 struct thread_info
*thread
;
4450 /* Get list of threads. */
4451 remote_threads_info (target
);
4453 thread
= first_thread_of_process (pid
);
4455 inferior_ptid
= thread
->ptid
;
4457 inferior_ptid
= pid_to_ptid (pid
);
4459 /* Invalidate our notion of the remote current thread. */
4460 record_currthread (minus_one_ptid
);
4464 /* Now, if we have thread information, update inferior_ptid. */
4465 inferior_ptid
= remote_current_thread (inferior_ptid
);
4467 /* Add the main thread to the thread list. */
4468 add_thread_silent (inferior_ptid
);
4471 /* Next, if the target can specify a description, read it. We do
4472 this before anything involving memory or registers. */
4473 target_find_description ();
4477 /* Use the previously fetched status. */
4478 gdb_assert (wait_status
!= NULL
);
4480 if (target_can_async_p ())
4482 struct stop_reply
*stop_reply
;
4483 struct cleanup
*old_chain
;
4485 stop_reply
= stop_reply_xmalloc ();
4486 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4487 remote_parse_stop_reply (wait_status
, stop_reply
);
4488 discard_cleanups (old_chain
);
4489 push_stop_reply (stop_reply
);
4491 target_async (inferior_event_handler
, 0);
4495 gdb_assert (wait_status
!= NULL
);
4496 strcpy (rs
->buf
, wait_status
);
4497 rs
->cached_wait_status
= 1;
4501 gdb_assert (wait_status
== NULL
);
4505 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4507 extended_remote_attach_1 (ops
, args
, from_tty
);
4510 /* Convert hex digit A to a number. */
4515 if (a
>= '0' && a
<= '9')
4517 else if (a
>= 'a' && a
<= 'f')
4518 return a
- 'a' + 10;
4519 else if (a
>= 'A' && a
<= 'F')
4520 return a
- 'A' + 10;
4522 error (_("Reply contains invalid hex digit %d"), a
);
4526 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4530 for (i
= 0; i
< count
; i
++)
4532 if (hex
[0] == 0 || hex
[1] == 0)
4534 /* Hex string is short, or of uneven length.
4535 Return the count that has been converted so far. */
4538 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4544 /* Convert number NIB to a hex digit. */
4552 return 'a' + nib
- 10;
4556 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4560 /* May use a length, or a nul-terminated string as input. */
4562 count
= strlen ((char *) bin
);
4564 for (i
= 0; i
< count
; i
++)
4566 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4567 *hex
++ = tohex (*bin
++ & 0xf);
4573 /* Check for the availability of vCont. This function should also check
4577 remote_vcont_probe (struct remote_state
*rs
)
4581 strcpy (rs
->buf
, "vCont?");
4583 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4586 /* Make sure that the features we assume are supported. */
4587 if (strncmp (buf
, "vCont", 5) == 0)
4590 int support_s
, support_S
, support_c
, support_C
;
4596 rs
->support_vCont_t
= 0;
4597 while (p
&& *p
== ';')
4600 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4602 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4604 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4606 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4608 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4609 rs
->support_vCont_t
= 1;
4611 p
= strchr (p
, ';');
4614 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4615 BUF will make packet_ok disable the packet. */
4616 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4620 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4623 /* Helper function for building "vCont" resumptions. Write a
4624 resumption to P. ENDP points to one-passed-the-end of the buffer
4625 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4626 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4627 resumed thread should be single-stepped and/or signalled. If PTID
4628 equals minus_one_ptid, then all threads are resumed; if PTID
4629 represents a process, then all threads of the process are resumed;
4630 the thread to be stepped and/or signalled is given in the global
4634 append_resumption (char *p
, char *endp
,
4635 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4637 struct remote_state
*rs
= get_remote_state ();
4639 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4640 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4642 p
+= xsnprintf (p
, endp
- p
, ";s");
4643 else if (siggnal
!= GDB_SIGNAL_0
)
4644 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4646 p
+= xsnprintf (p
, endp
- p
, ";c");
4648 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4652 /* All (-1) threads of process. */
4653 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4655 p
+= xsnprintf (p
, endp
- p
, ":");
4656 p
= write_ptid (p
, endp
, nptid
);
4658 else if (!ptid_equal (ptid
, minus_one_ptid
))
4660 p
+= xsnprintf (p
, endp
- p
, ":");
4661 p
= write_ptid (p
, endp
, ptid
);
4667 /* Append a vCont continue-with-signal action for threads that have a
4668 non-zero stop signal. */
4671 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4673 struct thread_info
*thread
;
4675 ALL_THREADS (thread
)
4676 if (ptid_match (thread
->ptid
, ptid
)
4677 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4678 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4679 && signal_pass_state (thread
->suspend
.stop_signal
))
4681 p
= append_resumption (p
, endp
, thread
->ptid
,
4682 0, thread
->suspend
.stop_signal
);
4683 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4689 /* Resume the remote inferior by using a "vCont" packet. The thread
4690 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4691 resumed thread should be single-stepped and/or signalled. If PTID
4692 equals minus_one_ptid, then all threads are resumed; the thread to
4693 be stepped and/or signalled is given in the global INFERIOR_PTID.
4694 This function returns non-zero iff it resumes the inferior.
4696 This function issues a strict subset of all possible vCont commands at the
4700 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4702 struct remote_state
*rs
= get_remote_state ();
4706 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4707 remote_vcont_probe (rs
);
4709 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4713 endp
= rs
->buf
+ get_remote_packet_size ();
4715 /* If we could generate a wider range of packets, we'd have to worry
4716 about overflowing BUF. Should there be a generic
4717 "multi-part-packet" packet? */
4719 p
+= xsnprintf (p
, endp
- p
, "vCont");
4721 if (ptid_equal (ptid
, magic_null_ptid
))
4723 /* MAGIC_NULL_PTID means that we don't have any active threads,
4724 so we don't have any TID numbers the inferior will
4725 understand. Make sure to only send forms that do not specify
4727 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4729 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4731 /* Resume all threads (of all processes, or of a single
4732 process), with preference for INFERIOR_PTID. This assumes
4733 inferior_ptid belongs to the set of all threads we are about
4735 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4737 /* Step inferior_ptid, with or without signal. */
4738 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4741 /* Also pass down any pending signaled resumption for other
4742 threads not the current. */
4743 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4745 /* And continue others without a signal. */
4746 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4750 /* Scheduler locking; resume only PTID. */
4751 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4754 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4759 /* In non-stop, the stub replies to vCont with "OK". The stop
4760 reply will be reported asynchronously by means of a `%Stop'
4762 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4763 if (strcmp (rs
->buf
, "OK") != 0)
4764 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4770 /* Tell the remote machine to resume. */
4772 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4774 static int last_sent_step
;
4777 remote_resume (struct target_ops
*ops
,
4778 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4780 struct remote_state
*rs
= get_remote_state ();
4783 last_sent_signal
= siggnal
;
4784 last_sent_step
= step
;
4786 /* The vCont packet doesn't need to specify threads via Hc. */
4787 /* No reverse support (yet) for vCont. */
4788 if (execution_direction
!= EXEC_REVERSE
)
4789 if (remote_vcont_resume (ptid
, step
, siggnal
))
4792 /* All other supported resume packets do use Hc, so set the continue
4794 if (ptid_equal (ptid
, minus_one_ptid
))
4795 set_continue_thread (any_thread_ptid
);
4797 set_continue_thread (ptid
);
4800 if (execution_direction
== EXEC_REVERSE
)
4802 /* We don't pass signals to the target in reverse exec mode. */
4803 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4804 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4808 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4809 error (_("Remote reverse-step not supported."));
4811 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4812 error (_("Remote reverse-continue not supported."));
4814 strcpy (buf
, step
? "bs" : "bc");
4816 else if (siggnal
!= GDB_SIGNAL_0
)
4818 buf
[0] = step
? 'S' : 'C';
4819 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4820 buf
[2] = tohex (((int) siggnal
) & 0xf);
4824 strcpy (buf
, step
? "s" : "c");
4829 /* We are about to start executing the inferior, let's register it
4830 with the event loop. NOTE: this is the one place where all the
4831 execution commands end up. We could alternatively do this in each
4832 of the execution commands in infcmd.c. */
4833 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4834 into infcmd.c in order to allow inferior function calls to work
4835 NOT asynchronously. */
4836 if (target_can_async_p ())
4837 target_async (inferior_event_handler
, 0);
4839 /* We've just told the target to resume. The remote server will
4840 wait for the inferior to stop, and then send a stop reply. In
4841 the mean time, we can't start another command/query ourselves
4842 because the stub wouldn't be ready to process it. This applies
4843 only to the base all-stop protocol, however. In non-stop (which
4844 only supports vCont), the stub replies with an "OK", and is
4845 immediate able to process further serial input. */
4847 rs
->waiting_for_stop_reply
= 1;
4851 /* Set up the signal handler for SIGINT, while the target is
4852 executing, ovewriting the 'regular' SIGINT signal handler. */
4854 initialize_sigint_signal_handler (void)
4856 signal (SIGINT
, handle_remote_sigint
);
4859 /* Signal handler for SIGINT, while the target is executing. */
4861 handle_remote_sigint (int sig
)
4863 signal (sig
, handle_remote_sigint_twice
);
4864 mark_async_signal_handler_wrapper (sigint_remote_token
);
4867 /* Signal handler for SIGINT, installed after SIGINT has already been
4868 sent once. It will take effect the second time that the user sends
4871 handle_remote_sigint_twice (int sig
)
4873 signal (sig
, handle_remote_sigint
);
4874 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4877 /* Perform the real interruption of the target execution, in response
4880 async_remote_interrupt (gdb_client_data arg
)
4883 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4885 target_stop (inferior_ptid
);
4888 /* Perform interrupt, if the first attempt did not succeed. Just give
4889 up on the target alltogether. */
4891 async_remote_interrupt_twice (gdb_client_data arg
)
4894 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4899 /* Reinstall the usual SIGINT handlers, after the target has
4902 cleanup_sigint_signal_handler (void *dummy
)
4904 signal (SIGINT
, handle_sigint
);
4907 /* Send ^C to target to halt it. Target will respond, and send us a
4909 static void (*ofunc
) (int);
4911 /* The command line interface's stop routine. This function is installed
4912 as a signal handler for SIGINT. The first time a user requests a
4913 stop, we call remote_stop to send a break or ^C. If there is no
4914 response from the target (it didn't stop when the user requested it),
4915 we ask the user if he'd like to detach from the target. */
4917 remote_interrupt (int signo
)
4919 /* If this doesn't work, try more severe steps. */
4920 signal (signo
, remote_interrupt_twice
);
4922 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4925 /* The user typed ^C twice. */
4928 remote_interrupt_twice (int signo
)
4930 signal (signo
, ofunc
);
4931 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4932 signal (signo
, remote_interrupt
);
4935 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4936 thread, all threads of a remote process, or all threads of all
4940 remote_stop_ns (ptid_t ptid
)
4942 struct remote_state
*rs
= get_remote_state ();
4944 char *endp
= rs
->buf
+ get_remote_packet_size ();
4946 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4947 remote_vcont_probe (rs
);
4949 if (!rs
->support_vCont_t
)
4950 error (_("Remote server does not support stopping threads"));
4952 if (ptid_equal (ptid
, minus_one_ptid
)
4953 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4954 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4959 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4961 if (ptid_is_pid (ptid
))
4962 /* All (-1) threads of process. */
4963 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4966 /* Small optimization: if we already have a stop reply for
4967 this thread, no use in telling the stub we want this
4969 if (peek_stop_reply (ptid
))
4975 write_ptid (p
, endp
, nptid
);
4978 /* In non-stop, we get an immediate OK reply. The stop reply will
4979 come in asynchronously by notification. */
4981 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4982 if (strcmp (rs
->buf
, "OK") != 0)
4983 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4986 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4987 remote target. It is undefined which thread of which process
4988 reports the stop. */
4991 remote_stop_as (ptid_t ptid
)
4993 struct remote_state
*rs
= get_remote_state ();
4995 rs
->ctrlc_pending_p
= 1;
4997 /* If the inferior is stopped already, but the core didn't know
4998 about it yet, just ignore the request. The cached wait status
4999 will be collected in remote_wait. */
5000 if (rs
->cached_wait_status
)
5003 /* Send interrupt_sequence to remote target. */
5004 send_interrupt_sequence ();
5007 /* This is the generic stop called via the target vector. When a target
5008 interrupt is requested, either by the command line or the GUI, we
5009 will eventually end up here. */
5012 remote_stop (ptid_t ptid
)
5015 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5018 remote_stop_ns (ptid
);
5020 remote_stop_as (ptid
);
5023 /* Ask the user what to do when an interrupt is received. */
5026 interrupt_query (void)
5028 target_terminal_ours ();
5030 if (target_can_async_p ())
5032 signal (SIGINT
, handle_sigint
);
5033 deprecated_throw_reason (RETURN_QUIT
);
5037 if (query (_("Interrupted while waiting for the program.\n\
5038 Give up (and stop debugging it)? ")))
5041 deprecated_throw_reason (RETURN_QUIT
);
5045 target_terminal_inferior ();
5048 /* Enable/disable target terminal ownership. Most targets can use
5049 terminal groups to control terminal ownership. Remote targets are
5050 different in that explicit transfer of ownership to/from GDB/target
5054 remote_terminal_inferior (void)
5056 if (!target_async_permitted
)
5057 /* Nothing to do. */
5060 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5061 idempotent. The event-loop GDB talking to an asynchronous target
5062 with a synchronous command calls this function from both
5063 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5064 transfer the terminal to the target when it shouldn't this guard
5066 if (!remote_async_terminal_ours_p
)
5068 delete_file_handler (input_fd
);
5069 remote_async_terminal_ours_p
= 0;
5070 initialize_sigint_signal_handler ();
5071 /* NOTE: At this point we could also register our selves as the
5072 recipient of all input. Any characters typed could then be
5073 passed on down to the target. */
5077 remote_terminal_ours (void)
5079 if (!target_async_permitted
)
5080 /* Nothing to do. */
5083 /* See FIXME in remote_terminal_inferior. */
5084 if (remote_async_terminal_ours_p
)
5086 cleanup_sigint_signal_handler (NULL
);
5087 add_file_handler (input_fd
, stdin_event_handler
, 0);
5088 remote_async_terminal_ours_p
= 1;
5092 remote_console_output (char *msg
)
5096 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5099 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5103 fputs_unfiltered (tb
, gdb_stdtarg
);
5105 gdb_flush (gdb_stdtarg
);
5108 typedef struct cached_reg
5111 gdb_byte data
[MAX_REGISTER_SIZE
];
5114 DEF_VEC_O(cached_reg_t
);
5118 struct stop_reply
*next
;
5122 struct target_waitstatus ws
;
5124 /* Expedited registers. This makes remote debugging a bit more
5125 efficient for those targets that provide critical registers as
5126 part of their normal status mechanism (as another roundtrip to
5127 fetch them is avoided). */
5128 VEC(cached_reg_t
) *regcache
;
5130 int stopped_by_watchpoint_p
;
5131 CORE_ADDR watch_data_address
;
5139 /* The list of already fetched and acknowledged stop events. */
5140 static struct stop_reply
*stop_reply_queue
;
5142 static struct stop_reply
*
5143 stop_reply_xmalloc (void)
5145 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
5152 stop_reply_xfree (struct stop_reply
*r
)
5156 VEC_free (cached_reg_t
, r
->regcache
);
5161 /* Discard all pending stop replies of inferior PID. If PID is -1,
5162 discard everything. */
5165 discard_pending_stop_replies (int pid
)
5167 struct stop_reply
*prev
= NULL
, *reply
, *next
;
5169 /* Discard the in-flight notification. */
5170 if (pending_stop_reply
!= NULL
5172 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
5174 stop_reply_xfree (pending_stop_reply
);
5175 pending_stop_reply
= NULL
;
5178 /* Discard the stop replies we have already pulled with
5180 for (reply
= stop_reply_queue
; reply
; reply
= next
)
5184 || ptid_get_pid (reply
->ptid
) == pid
)
5186 if (reply
== stop_reply_queue
)
5187 stop_reply_queue
= reply
->next
;
5189 prev
->next
= reply
->next
;
5191 stop_reply_xfree (reply
);
5198 /* Cleanup wrapper. */
5201 do_stop_reply_xfree (void *arg
)
5203 struct stop_reply
*r
= arg
;
5205 stop_reply_xfree (r
);
5208 /* Look for a queued stop reply belonging to PTID. If one is found,
5209 remove it from the queue, and return it. Returns NULL if none is
5210 found. If there are still queued events left to process, tell the
5211 event loop to get back to target_wait soon. */
5213 static struct stop_reply
*
5214 queued_stop_reply (ptid_t ptid
)
5216 struct stop_reply
*it
;
5217 struct stop_reply
**it_link
;
5219 it
= stop_reply_queue
;
5220 it_link
= &stop_reply_queue
;
5223 if (ptid_match (it
->ptid
, ptid
))
5225 *it_link
= it
->next
;
5230 it_link
= &it
->next
;
5234 if (stop_reply_queue
)
5235 /* There's still at least an event left. */
5236 mark_async_event_handler (remote_async_inferior_event_token
);
5241 /* Push a fully parsed stop reply in the stop reply queue. Since we
5242 know that we now have at least one queued event left to pass to the
5243 core side, tell the event loop to get back to target_wait soon. */
5246 push_stop_reply (struct stop_reply
*new_event
)
5248 struct stop_reply
*event
;
5250 if (stop_reply_queue
)
5252 for (event
= stop_reply_queue
;
5253 event
&& event
->next
;
5254 event
= event
->next
)
5257 event
->next
= new_event
;
5260 stop_reply_queue
= new_event
;
5262 mark_async_event_handler (remote_async_inferior_event_token
);
5265 /* Returns true if we have a stop reply for PTID. */
5268 peek_stop_reply (ptid_t ptid
)
5270 struct stop_reply
*it
;
5272 for (it
= stop_reply_queue
; it
; it
= it
->next
)
5273 if (ptid_equal (ptid
, it
->ptid
))
5275 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5282 /* Parse the stop reply in BUF. Either the function succeeds, and the
5283 result is stored in EVENT, or throws an error. */
5286 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5288 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5292 event
->ptid
= null_ptid
;
5293 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5294 event
->ws
.value
.integer
= 0;
5295 event
->solibs_changed
= 0;
5296 event
->replay_event
= 0;
5297 event
->stopped_by_watchpoint_p
= 0;
5298 event
->regcache
= NULL
;
5303 case 'T': /* Status with PC, SP, FP, ... */
5304 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5305 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5307 n... = register number
5308 r... = register contents
5311 p
= &buf
[3]; /* after Txx */
5319 /* If the packet contains a register number, save it in
5320 pnum and set p1 to point to the character following it.
5321 Otherwise p1 points to p. */
5323 /* If this packet is an awatch packet, don't parse the 'a'
5324 as a register number. */
5326 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5327 && strncmp (p
, "core", strlen ("core") != 0))
5329 /* Read the ``P'' register number. */
5330 pnum
= strtol (p
, &p_temp
, 16);
5336 if (p1
== p
) /* No register number present here. */
5338 p1
= strchr (p
, ':');
5340 error (_("Malformed packet(a) (missing colon): %s\n\
5343 if (strncmp (p
, "thread", p1
- p
) == 0)
5344 event
->ptid
= read_ptid (++p1
, &p
);
5345 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5346 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5347 || (strncmp (p
, "awatch", p1
- p
) == 0))
5349 event
->stopped_by_watchpoint_p
= 1;
5350 p
= unpack_varlen_hex (++p1
, &addr
);
5351 event
->watch_data_address
= (CORE_ADDR
) addr
;
5353 else if (strncmp (p
, "library", p1
- p
) == 0)
5357 while (*p_temp
&& *p_temp
!= ';')
5360 event
->solibs_changed
= 1;
5363 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5365 /* NO_HISTORY event.
5366 p1 will indicate "begin" or "end", but
5367 it makes no difference for now, so ignore it. */
5368 event
->replay_event
= 1;
5369 p_temp
= strchr (p1
+ 1, ';');
5373 else if (strncmp (p
, "core", p1
- p
) == 0)
5377 p
= unpack_varlen_hex (++p1
, &c
);
5382 /* Silently skip unknown optional info. */
5383 p_temp
= strchr (p1
+ 1, ';');
5390 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5391 cached_reg_t cached_reg
;
5396 error (_("Malformed packet(b) (missing colon): %s\n\
5402 error (_("Remote sent bad register number %s: %s\n\
5404 hex_string (pnum
), p
, buf
);
5406 cached_reg
.num
= reg
->regnum
;
5408 fieldsize
= hex2bin (p
, cached_reg
.data
,
5409 register_size (target_gdbarch
,
5412 if (fieldsize
< register_size (target_gdbarch
,
5414 warning (_("Remote reply is too short: %s"), buf
);
5416 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5420 error (_("Remote register badly formatted: %s\nhere: %s"),
5425 case 'S': /* Old style status, just signal only. */
5426 if (event
->solibs_changed
)
5427 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5428 else if (event
->replay_event
)
5429 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5432 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5433 event
->ws
.value
.sig
= (enum gdb_signal
)
5434 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5437 case 'W': /* Target exited. */
5444 /* GDB used to accept only 2 hex chars here. Stubs should
5445 only send more if they detect GDB supports multi-process
5447 p
= unpack_varlen_hex (&buf
[1], &value
);
5451 /* The remote process exited. */
5452 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5453 event
->ws
.value
.integer
= value
;
5457 /* The remote process exited with a signal. */
5458 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5459 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5462 /* If no process is specified, assume inferior_ptid. */
5463 pid
= ptid_get_pid (inferior_ptid
);
5472 else if (strncmp (p
,
5473 "process:", sizeof ("process:") - 1) == 0)
5477 p
+= sizeof ("process:") - 1;
5478 unpack_varlen_hex (p
, &upid
);
5482 error (_("unknown stop reply packet: %s"), buf
);
5485 error (_("unknown stop reply packet: %s"), buf
);
5486 event
->ptid
= pid_to_ptid (pid
);
5491 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5492 error (_("No process or thread specified in stop reply: %s"), buf
);
5495 /* When the stub wants to tell GDB about a new stop reply, it sends a
5496 stop notification (%Stop). Those can come it at any time, hence,
5497 we have to make sure that any pending putpkt/getpkt sequence we're
5498 making is finished, before querying the stub for more events with
5499 vStopped. E.g., if we started a vStopped sequence immediatelly
5500 upon receiving the %Stop notification, something like this could
5508 1.6) <-- (registers reply to step #1.3)
5510 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5513 To solve this, whenever we parse a %Stop notification sucessfully,
5514 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5515 doing whatever we were doing:
5521 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5522 2.5) <-- (registers reply to step #2.3)
5524 Eventualy after step #2.5, we return to the event loop, which
5525 notices there's an event on the
5526 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5527 associated callback --- the function below. At this point, we're
5528 always safe to start a vStopped sequence. :
5531 2.7) <-- T05 thread:2
5537 remote_get_pending_stop_replies (void)
5539 struct remote_state
*rs
= get_remote_state ();
5541 if (pending_stop_reply
)
5544 putpkt ("vStopped");
5546 /* Now we can rely on it. */
5547 push_stop_reply (pending_stop_reply
);
5548 pending_stop_reply
= NULL
;
5552 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5553 if (strcmp (rs
->buf
, "OK") == 0)
5557 struct cleanup
*old_chain
;
5558 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5560 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5561 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5564 putpkt ("vStopped");
5566 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5568 /* Now we can rely on it. */
5569 discard_cleanups (old_chain
);
5570 push_stop_reply (stop_reply
);
5573 /* We got an unknown stop reply. */
5574 do_cleanups (old_chain
);
5581 /* Called when it is decided that STOP_REPLY holds the info of the
5582 event that is to be returned to the core. This function always
5583 destroys STOP_REPLY. */
5586 process_stop_reply (struct stop_reply
*stop_reply
,
5587 struct target_waitstatus
*status
)
5591 *status
= stop_reply
->ws
;
5592 ptid
= stop_reply
->ptid
;
5594 /* If no thread/process was reported by the stub, assume the current
5596 if (ptid_equal (ptid
, null_ptid
))
5597 ptid
= inferior_ptid
;
5599 if (status
->kind
!= TARGET_WAITKIND_EXITED
5600 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5602 /* Expedited registers. */
5603 if (stop_reply
->regcache
)
5605 struct regcache
*regcache
5606 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5611 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5613 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5614 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5617 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5618 remote_watch_data_address
= stop_reply
->watch_data_address
;
5620 remote_notice_new_inferior (ptid
, 0);
5621 demand_private_info (ptid
)->core
= stop_reply
->core
;
5624 stop_reply_xfree (stop_reply
);
5628 /* The non-stop mode version of target_wait. */
5631 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5633 struct remote_state
*rs
= get_remote_state ();
5634 struct stop_reply
*stop_reply
;
5637 /* If in non-stop mode, get out of getpkt even if a
5638 notification is received. */
5640 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5647 case 'E': /* Error of some sort. */
5648 /* We're out of sync with the target now. Did it continue
5649 or not? We can't tell which thread it was in non-stop,
5650 so just ignore this. */
5651 warning (_("Remote failure reply: %s"), rs
->buf
);
5653 case 'O': /* Console output. */
5654 remote_console_output (rs
->buf
+ 1);
5657 warning (_("Invalid remote reply: %s"), rs
->buf
);
5661 /* Acknowledge a pending stop reply that may have arrived in the
5663 if (pending_stop_reply
!= NULL
)
5664 remote_get_pending_stop_replies ();
5666 /* If indeed we noticed a stop reply, we're done. */
5667 stop_reply
= queued_stop_reply (ptid
);
5668 if (stop_reply
!= NULL
)
5669 return process_stop_reply (stop_reply
, status
);
5671 /* Still no event. If we're just polling for an event, then
5672 return to the event loop. */
5673 if (options
& TARGET_WNOHANG
)
5675 status
->kind
= TARGET_WAITKIND_IGNORE
;
5676 return minus_one_ptid
;
5679 /* Otherwise do a blocking wait. */
5680 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5685 /* Wait until the remote machine stops, then return, storing status in
5686 STATUS just as `wait' would. */
5689 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5691 struct remote_state
*rs
= get_remote_state ();
5692 ptid_t event_ptid
= null_ptid
;
5694 struct stop_reply
*stop_reply
;
5698 status
->kind
= TARGET_WAITKIND_IGNORE
;
5699 status
->value
.integer
= 0;
5701 stop_reply
= queued_stop_reply (ptid
);
5702 if (stop_reply
!= NULL
)
5703 return process_stop_reply (stop_reply
, status
);
5705 if (rs
->cached_wait_status
)
5706 /* Use the cached wait status, but only once. */
5707 rs
->cached_wait_status
= 0;
5712 if (!target_is_async_p ())
5714 ofunc
= signal (SIGINT
, remote_interrupt
);
5715 /* If the user hit C-c before this packet, or between packets,
5716 pretend that it was hit right here. */
5720 remote_interrupt (SIGINT
);
5724 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5725 _never_ wait for ever -> test on target_is_async_p().
5726 However, before we do that we need to ensure that the caller
5727 knows how to take the target into/out of async mode. */
5728 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5729 if (!target_is_async_p ())
5730 signal (SIGINT
, ofunc
);
5735 remote_stopped_by_watchpoint_p
= 0;
5737 /* We got something. */
5738 rs
->waiting_for_stop_reply
= 0;
5740 /* Assume that the target has acknowledged Ctrl-C unless we receive
5741 an 'F' or 'O' packet. */
5742 if (buf
[0] != 'F' && buf
[0] != 'O')
5743 rs
->ctrlc_pending_p
= 0;
5747 case 'E': /* Error of some sort. */
5748 /* We're out of sync with the target now. Did it continue or
5749 not? Not is more likely, so report a stop. */
5750 warning (_("Remote failure reply: %s"), buf
);
5751 status
->kind
= TARGET_WAITKIND_STOPPED
;
5752 status
->value
.sig
= GDB_SIGNAL_0
;
5754 case 'F': /* File-I/O request. */
5755 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5756 rs
->ctrlc_pending_p
= 0;
5758 case 'T': case 'S': case 'X': case 'W':
5760 struct stop_reply
*stop_reply
;
5761 struct cleanup
*old_chain
;
5763 stop_reply
= stop_reply_xmalloc ();
5764 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5765 remote_parse_stop_reply (buf
, stop_reply
);
5766 discard_cleanups (old_chain
);
5767 event_ptid
= process_stop_reply (stop_reply
, status
);
5770 case 'O': /* Console output. */
5771 remote_console_output (buf
+ 1);
5773 /* The target didn't really stop; keep waiting. */
5774 rs
->waiting_for_stop_reply
= 1;
5778 if (last_sent_signal
!= GDB_SIGNAL_0
)
5780 /* Zero length reply means that we tried 'S' or 'C' and the
5781 remote system doesn't support it. */
5782 target_terminal_ours_for_output ();
5784 ("Can't send signals to this remote system. %s not sent.\n",
5785 gdb_signal_to_name (last_sent_signal
));
5786 last_sent_signal
= GDB_SIGNAL_0
;
5787 target_terminal_inferior ();
5789 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5790 putpkt ((char *) buf
);
5792 /* We just told the target to resume, so a stop reply is in
5794 rs
->waiting_for_stop_reply
= 1;
5797 /* else fallthrough */
5799 warning (_("Invalid remote reply: %s"), buf
);
5801 rs
->waiting_for_stop_reply
= 1;
5805 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5807 /* Nothing interesting happened. If we're doing a non-blocking
5808 poll, we're done. Otherwise, go back to waiting. */
5809 if (options
& TARGET_WNOHANG
)
5810 return minus_one_ptid
;
5814 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5815 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5817 if (!ptid_equal (event_ptid
, null_ptid
))
5818 record_currthread (event_ptid
);
5820 event_ptid
= inferior_ptid
;
5823 /* A process exit. Invalidate our notion of current thread. */
5824 record_currthread (minus_one_ptid
);
5829 /* Wait until the remote machine stops, then return, storing status in
5830 STATUS just as `wait' would. */
5833 remote_wait (struct target_ops
*ops
,
5834 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5839 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5841 event_ptid
= remote_wait_as (ptid
, status
, options
);
5843 if (target_can_async_p ())
5845 /* If there are are events left in the queue tell the event loop
5847 if (stop_reply_queue
)
5848 mark_async_event_handler (remote_async_inferior_event_token
);
5854 /* Fetch a single register using a 'p' packet. */
5857 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5859 struct remote_state
*rs
= get_remote_state ();
5861 char regp
[MAX_REGISTER_SIZE
];
5864 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5867 if (reg
->pnum
== -1)
5872 p
+= hexnumstr (p
, reg
->pnum
);
5875 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5879 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5883 case PACKET_UNKNOWN
:
5886 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5887 gdbarch_register_name (get_regcache_arch (regcache
),
5892 /* If this register is unfetchable, tell the regcache. */
5895 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5899 /* Otherwise, parse and supply the value. */
5905 error (_("fetch_register_using_p: early buf termination"));
5907 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5910 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5914 /* Fetch the registers included in the target's 'g' packet. */
5917 send_g_packet (void)
5919 struct remote_state
*rs
= get_remote_state ();
5922 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
5923 remote_send (&rs
->buf
, &rs
->buf_size
);
5925 /* We can get out of synch in various cases. If the first character
5926 in the buffer is not a hex character, assume that has happened
5927 and try to fetch another packet to read. */
5928 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5929 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5930 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5931 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5934 fprintf_unfiltered (gdb_stdlog
,
5935 "Bad register packet; fetching a new packet\n");
5936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5939 buf_len
= strlen (rs
->buf
);
5941 /* Sanity check the received packet. */
5942 if (buf_len
% 2 != 0)
5943 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5949 process_g_packet (struct regcache
*regcache
)
5951 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5952 struct remote_state
*rs
= get_remote_state ();
5953 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5958 buf_len
= strlen (rs
->buf
);
5960 /* Further sanity checks, with knowledge of the architecture. */
5961 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5962 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5964 /* Save the size of the packet sent to us by the target. It is used
5965 as a heuristic when determining the max size of packets that the
5966 target can safely receive. */
5967 if (rsa
->actual_register_packet_size
== 0)
5968 rsa
->actual_register_packet_size
= buf_len
;
5970 /* If this is smaller than we guessed the 'g' packet would be,
5971 update our records. A 'g' reply that doesn't include a register's
5972 value implies either that the register is not available, or that
5973 the 'p' packet must be used. */
5974 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5976 rsa
->sizeof_g_packet
= buf_len
/ 2;
5978 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5980 if (rsa
->regs
[i
].pnum
== -1)
5983 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5984 rsa
->regs
[i
].in_g_packet
= 0;
5986 rsa
->regs
[i
].in_g_packet
= 1;
5990 regs
= alloca (rsa
->sizeof_g_packet
);
5992 /* Unimplemented registers read as all bits zero. */
5993 memset (regs
, 0, rsa
->sizeof_g_packet
);
5995 /* Reply describes registers byte by byte, each byte encoded as two
5996 hex characters. Suck them all up, then supply them to the
5997 register cacheing/storage mechanism. */
6000 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6002 if (p
[0] == 0 || p
[1] == 0)
6003 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6004 internal_error (__FILE__
, __LINE__
,
6005 _("unexpected end of 'g' packet reply"));
6007 if (p
[0] == 'x' && p
[1] == 'x')
6008 regs
[i
] = 0; /* 'x' */
6010 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6014 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6016 struct packet_reg
*r
= &rsa
->regs
[i
];
6020 if (r
->offset
* 2 >= strlen (rs
->buf
))
6021 /* This shouldn't happen - we adjusted in_g_packet above. */
6022 internal_error (__FILE__
, __LINE__
,
6023 _("unexpected end of 'g' packet reply"));
6024 else if (rs
->buf
[r
->offset
* 2] == 'x')
6026 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6027 /* The register isn't available, mark it as such (at
6028 the same time setting the value to zero). */
6029 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6032 regcache_raw_supply (regcache
, r
->regnum
,
6039 fetch_registers_using_g (struct regcache
*regcache
)
6042 process_g_packet (regcache
);
6045 /* Make the remote selected traceframe match GDB's selected
6049 set_remote_traceframe (void)
6053 if (remote_traceframe_number
== get_traceframe_number ())
6056 /* Avoid recursion, remote_trace_find calls us again. */
6057 remote_traceframe_number
= get_traceframe_number ();
6059 newnum
= target_trace_find (tfind_number
,
6060 get_traceframe_number (), 0, 0, NULL
);
6062 /* Should not happen. If it does, all bets are off. */
6063 if (newnum
!= get_traceframe_number ())
6064 warning (_("could not set remote traceframe"));
6068 remote_fetch_registers (struct target_ops
*ops
,
6069 struct regcache
*regcache
, int regnum
)
6071 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6074 set_remote_traceframe ();
6075 set_general_thread (inferior_ptid
);
6079 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6081 gdb_assert (reg
!= NULL
);
6083 /* If this register might be in the 'g' packet, try that first -
6084 we are likely to read more than one register. If this is the
6085 first 'g' packet, we might be overly optimistic about its
6086 contents, so fall back to 'p'. */
6087 if (reg
->in_g_packet
)
6089 fetch_registers_using_g (regcache
);
6090 if (reg
->in_g_packet
)
6094 if (fetch_register_using_p (regcache
, reg
))
6097 /* This register is not available. */
6098 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6103 fetch_registers_using_g (regcache
);
6105 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6106 if (!rsa
->regs
[i
].in_g_packet
)
6107 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6109 /* This register is not available. */
6110 regcache_raw_supply (regcache
, i
, NULL
);
6114 /* Prepare to store registers. Since we may send them all (using a
6115 'G' request), we have to read out the ones we don't want to change
6119 remote_prepare_to_store (struct regcache
*regcache
)
6121 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6123 gdb_byte buf
[MAX_REGISTER_SIZE
];
6125 /* Make sure the entire registers array is valid. */
6126 switch (remote_protocol_packets
[PACKET_P
].support
)
6128 case PACKET_DISABLE
:
6129 case PACKET_SUPPORT_UNKNOWN
:
6130 /* Make sure all the necessary registers are cached. */
6131 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6132 if (rsa
->regs
[i
].in_g_packet
)
6133 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6140 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6141 packet was not recognized. */
6144 store_register_using_P (const struct regcache
*regcache
,
6145 struct packet_reg
*reg
)
6147 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6148 struct remote_state
*rs
= get_remote_state ();
6149 /* Try storing a single register. */
6150 char *buf
= rs
->buf
;
6151 gdb_byte regp
[MAX_REGISTER_SIZE
];
6154 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6157 if (reg
->pnum
== -1)
6160 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6161 p
= buf
+ strlen (buf
);
6162 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6163 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6165 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6167 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6172 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6173 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6174 case PACKET_UNKNOWN
:
6177 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6181 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6182 contents of the register cache buffer. FIXME: ignores errors. */
6185 store_registers_using_G (const struct regcache
*regcache
)
6187 struct remote_state
*rs
= get_remote_state ();
6188 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6192 /* Extract all the registers in the regcache copying them into a
6197 regs
= alloca (rsa
->sizeof_g_packet
);
6198 memset (regs
, 0, rsa
->sizeof_g_packet
);
6199 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6201 struct packet_reg
*r
= &rsa
->regs
[i
];
6204 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6208 /* Command describes registers byte by byte,
6209 each byte encoded as two hex characters. */
6212 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6214 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6216 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6217 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6218 error (_("Could not write registers; remote failure reply '%s'"),
6222 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6223 of the register cache buffer. FIXME: ignores errors. */
6226 remote_store_registers (struct target_ops
*ops
,
6227 struct regcache
*regcache
, int regnum
)
6229 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6232 set_remote_traceframe ();
6233 set_general_thread (inferior_ptid
);
6237 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6239 gdb_assert (reg
!= NULL
);
6241 /* Always prefer to store registers using the 'P' packet if
6242 possible; we often change only a small number of registers.
6243 Sometimes we change a larger number; we'd need help from a
6244 higher layer to know to use 'G'. */
6245 if (store_register_using_P (regcache
, reg
))
6248 /* For now, don't complain if we have no way to write the
6249 register. GDB loses track of unavailable registers too
6250 easily. Some day, this may be an error. We don't have
6251 any way to read the register, either... */
6252 if (!reg
->in_g_packet
)
6255 store_registers_using_G (regcache
);
6259 store_registers_using_G (regcache
);
6261 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6262 if (!rsa
->regs
[i
].in_g_packet
)
6263 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6264 /* See above for why we do not issue an error here. */
6269 /* Return the number of hex digits in num. */
6272 hexnumlen (ULONGEST num
)
6276 for (i
= 0; num
!= 0; i
++)
6282 /* Set BUF to the minimum number of hex digits representing NUM. */
6285 hexnumstr (char *buf
, ULONGEST num
)
6287 int len
= hexnumlen (num
);
6289 return hexnumnstr (buf
, num
, len
);
6293 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6296 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6302 for (i
= width
- 1; i
>= 0; i
--)
6304 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6311 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6314 remote_address_masked (CORE_ADDR addr
)
6316 int address_size
= remote_address_size
;
6318 /* If "remoteaddresssize" was not set, default to target address size. */
6320 address_size
= gdbarch_addr_bit (target_gdbarch
);
6322 if (address_size
> 0
6323 && address_size
< (sizeof (ULONGEST
) * 8))
6325 /* Only create a mask when that mask can safely be constructed
6326 in a ULONGEST variable. */
6329 mask
= (mask
<< address_size
) - 1;
6335 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6336 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6337 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6338 (which may be more than *OUT_LEN due to escape characters). The
6339 total number of bytes in the output buffer will be at most
6343 remote_escape_output (const gdb_byte
*buffer
, int len
,
6344 gdb_byte
*out_buf
, int *out_len
,
6347 int input_index
, output_index
;
6350 for (input_index
= 0; input_index
< len
; input_index
++)
6352 gdb_byte b
= buffer
[input_index
];
6354 if (b
== '$' || b
== '#' || b
== '}')
6356 /* These must be escaped. */
6357 if (output_index
+ 2 > out_maxlen
)
6359 out_buf
[output_index
++] = '}';
6360 out_buf
[output_index
++] = b
^ 0x20;
6364 if (output_index
+ 1 > out_maxlen
)
6366 out_buf
[output_index
++] = b
;
6370 *out_len
= input_index
;
6371 return output_index
;
6374 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6375 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6376 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6378 This function reverses remote_escape_output. It allows more
6379 escaped characters than that function does, in particular because
6380 '*' must be escaped to avoid the run-length encoding processing
6381 in reading packets. */
6384 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6385 gdb_byte
*out_buf
, int out_maxlen
)
6387 int input_index
, output_index
;
6392 for (input_index
= 0; input_index
< len
; input_index
++)
6394 gdb_byte b
= buffer
[input_index
];
6396 if (output_index
+ 1 > out_maxlen
)
6398 warning (_("Received too much data from remote target;"
6399 " ignoring overflow."));
6400 return output_index
;
6405 out_buf
[output_index
++] = b
^ 0x20;
6411 out_buf
[output_index
++] = b
;
6415 error (_("Unmatched escape character in target response."));
6417 return output_index
;
6420 /* Determine whether the remote target supports binary downloading.
6421 This is accomplished by sending a no-op memory write of zero length
6422 to the target at the specified address. It does not suffice to send
6423 the whole packet, since many stubs strip the eighth bit and
6424 subsequently compute a wrong checksum, which causes real havoc with
6427 NOTE: This can still lose if the serial line is not eight-bit
6428 clean. In cases like this, the user should clear "remote
6432 check_binary_download (CORE_ADDR addr
)
6434 struct remote_state
*rs
= get_remote_state ();
6436 switch (remote_protocol_packets
[PACKET_X
].support
)
6438 case PACKET_DISABLE
:
6442 case PACKET_SUPPORT_UNKNOWN
:
6448 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6450 p
+= hexnumstr (p
, (ULONGEST
) 0);
6454 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6455 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6457 if (rs
->buf
[0] == '\0')
6460 fprintf_unfiltered (gdb_stdlog
,
6461 "binary downloading NOT "
6462 "supported by target\n");
6463 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6468 fprintf_unfiltered (gdb_stdlog
,
6469 "binary downloading supported by target\n");
6470 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6477 /* Write memory data directly to the remote machine.
6478 This does not inform the data cache; the data cache uses this.
6479 HEADER is the starting part of the packet.
6480 MEMADDR is the address in the remote memory space.
6481 MYADDR is the address of the buffer in our space.
6482 LEN is the number of bytes.
6483 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6484 should send data as binary ('X'), or hex-encoded ('M').
6486 The function creates packet of the form
6487 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6489 where encoding of <DATA> is termined by PACKET_FORMAT.
6491 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6494 Returns the number of bytes transferred, or 0 (setting errno) for
6495 error. Only transfer a single packet. */
6498 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6499 const gdb_byte
*myaddr
, ssize_t len
,
6500 char packet_format
, int use_length
)
6502 struct remote_state
*rs
= get_remote_state ();
6512 if (packet_format
!= 'X' && packet_format
!= 'M')
6513 internal_error (__FILE__
, __LINE__
,
6514 _("remote_write_bytes_aux: bad packet format"));
6519 payload_size
= get_memory_write_packet_size ();
6521 /* The packet buffer will be large enough for the payload;
6522 get_memory_packet_size ensures this. */
6525 /* Compute the size of the actual payload by subtracting out the
6526 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6528 payload_size
-= strlen ("$,:#NN");
6530 /* The comma won't be used. */
6532 header_length
= strlen (header
);
6533 payload_size
-= header_length
;
6534 payload_size
-= hexnumlen (memaddr
);
6536 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6538 strcat (rs
->buf
, header
);
6539 p
= rs
->buf
+ strlen (header
);
6541 /* Compute a best guess of the number of bytes actually transfered. */
6542 if (packet_format
== 'X')
6544 /* Best guess at number of bytes that will fit. */
6545 todo
= min (len
, payload_size
);
6547 payload_size
-= hexnumlen (todo
);
6548 todo
= min (todo
, payload_size
);
6552 /* Num bytes that will fit. */
6553 todo
= min (len
, payload_size
/ 2);
6555 payload_size
-= hexnumlen (todo
);
6556 todo
= min (todo
, payload_size
/ 2);
6560 internal_error (__FILE__
, __LINE__
,
6561 _("minimum packet size too small to write data"));
6563 /* If we already need another packet, then try to align the end
6564 of this packet to a useful boundary. */
6565 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6566 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6568 /* Append "<memaddr>". */
6569 memaddr
= remote_address_masked (memaddr
);
6570 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6577 /* Append <len>. Retain the location/size of <len>. It may need to
6578 be adjusted once the packet body has been created. */
6580 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6588 /* Append the packet body. */
6589 if (packet_format
== 'X')
6591 /* Binary mode. Send target system values byte by byte, in
6592 increasing byte addresses. Only escape certain critical
6594 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6597 /* If not all TODO bytes fit, then we'll need another packet. Make
6598 a second try to keep the end of the packet aligned. Don't do
6599 this if the packet is tiny. */
6600 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6604 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6606 if (new_nr_bytes
!= nr_bytes
)
6607 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6612 p
+= payload_length
;
6613 if (use_length
&& nr_bytes
< todo
)
6615 /* Escape chars have filled up the buffer prematurely,
6616 and we have actually sent fewer bytes than planned.
6617 Fix-up the length field of the packet. Use the same
6618 number of characters as before. */
6619 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6620 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6625 /* Normal mode: Send target system values byte by byte, in
6626 increasing byte addresses. Each byte is encoded as a two hex
6628 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6632 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6633 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6635 if (rs
->buf
[0] == 'E')
6637 /* There is no correspondance between what the remote protocol
6638 uses for errors and errno codes. We would like a cleaner way
6639 of representing errors (big enough to include errno codes,
6640 bfd_error codes, and others). But for now just return EIO. */
6645 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6646 fewer bytes than we'd planned. */
6650 /* Write memory data directly to the remote machine.
6651 This does not inform the data cache; the data cache uses this.
6652 MEMADDR is the address in the remote memory space.
6653 MYADDR is the address of the buffer in our space.
6654 LEN is the number of bytes.
6656 Returns number of bytes transferred, or 0 (setting errno) for
6657 error. Only transfer a single packet. */
6660 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6662 char *packet_format
= 0;
6664 /* Check whether the target supports binary download. */
6665 check_binary_download (memaddr
);
6667 switch (remote_protocol_packets
[PACKET_X
].support
)
6670 packet_format
= "X";
6672 case PACKET_DISABLE
:
6673 packet_format
= "M";
6675 case PACKET_SUPPORT_UNKNOWN
:
6676 internal_error (__FILE__
, __LINE__
,
6677 _("remote_write_bytes: bad internal state"));
6679 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6682 return remote_write_bytes_aux (packet_format
,
6683 memaddr
, myaddr
, len
, packet_format
[0], 1);
6686 /* Read memory data directly from the remote machine.
6687 This does not use the data cache; the data cache uses this.
6688 MEMADDR is the address in the remote memory space.
6689 MYADDR is the address of the buffer in our space.
6690 LEN is the number of bytes.
6692 Returns number of bytes transferred, or 0 for error. */
6695 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6697 struct remote_state
*rs
= get_remote_state ();
6698 int max_buf_size
; /* Max size of packet output buffer. */
6706 max_buf_size
= get_memory_read_packet_size ();
6707 /* The packet buffer will be large enough for the payload;
6708 get_memory_packet_size ensures this. */
6710 /* Number if bytes that will fit. */
6711 todo
= min (len
, max_buf_size
/ 2);
6713 /* Construct "m"<memaddr>","<len>". */
6714 memaddr
= remote_address_masked (memaddr
);
6717 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6719 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6722 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6723 if (rs
->buf
[0] == 'E'
6724 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6725 && rs
->buf
[3] == '\0')
6727 /* There is no correspondance between what the remote protocol
6728 uses for errors and errno codes. We would like a cleaner way
6729 of representing errors (big enough to include errno codes,
6730 bfd_error codes, and others). But for now just return
6735 /* Reply describes memory byte by byte, each byte encoded as two hex
6738 i
= hex2bin (p
, myaddr
, todo
);
6739 /* Return what we have. Let higher layers handle partial reads. */
6744 /* Remote notification handler. */
6747 handle_notification (char *buf
)
6749 if (strncmp (buf
, "Stop:", 5) == 0)
6751 if (pending_stop_reply
)
6753 /* We've already parsed the in-flight stop-reply, but the
6754 stub for some reason thought we didn't, possibly due to
6755 timeout on its side. Just ignore it. */
6757 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6761 struct cleanup
*old_chain
;
6762 struct stop_reply
*reply
= stop_reply_xmalloc ();
6764 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6766 remote_parse_stop_reply (buf
+ 5, reply
);
6768 discard_cleanups (old_chain
);
6770 /* Be careful to only set it after parsing, since an error
6771 may be thrown then. */
6772 pending_stop_reply
= reply
;
6774 /* Notify the event loop there's a stop reply to acknowledge
6775 and that there may be more events to fetch. */
6776 mark_async_event_handler (remote_async_get_pending_events_token
);
6779 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6783 /* We ignore notifications we don't recognize, for compatibility
6784 with newer stubs. */
6789 /* Read or write LEN bytes from inferior memory at MEMADDR,
6790 transferring to or from debugger address BUFFER. Write to inferior
6791 if SHOULD_WRITE is nonzero. Returns length of data written or
6792 read; 0 for error. TARGET is unused. */
6795 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6796 int should_write
, struct mem_attrib
*attrib
,
6797 struct target_ops
*target
)
6801 set_remote_traceframe ();
6802 set_general_thread (inferior_ptid
);
6805 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6807 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6812 /* Sends a packet with content determined by the printf format string
6813 FORMAT and the remaining arguments, then gets the reply. Returns
6814 whether the packet was a success, a failure, or unknown. */
6816 static enum packet_result
6817 remote_send_printf (const char *format
, ...)
6819 struct remote_state
*rs
= get_remote_state ();
6820 int max_size
= get_remote_packet_size ();
6823 va_start (ap
, format
);
6826 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6827 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6829 if (putpkt (rs
->buf
) < 0)
6830 error (_("Communication problem with target."));
6833 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6835 return packet_check_result (rs
->buf
);
6839 restore_remote_timeout (void *p
)
6841 int value
= *(int *)p
;
6843 remote_timeout
= value
;
6846 /* Flash writing can take quite some time. We'll set
6847 effectively infinite timeout for flash operations.
6848 In future, we'll need to decide on a better approach. */
6849 static const int remote_flash_timeout
= 1000;
6852 remote_flash_erase (struct target_ops
*ops
,
6853 ULONGEST address
, LONGEST length
)
6855 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6856 int saved_remote_timeout
= remote_timeout
;
6857 enum packet_result ret
;
6858 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6859 &saved_remote_timeout
);
6861 remote_timeout
= remote_flash_timeout
;
6863 ret
= remote_send_printf ("vFlashErase:%s,%s",
6864 phex (address
, addr_size
),
6868 case PACKET_UNKNOWN
:
6869 error (_("Remote target does not support flash erase"));
6871 error (_("Error erasing flash with vFlashErase packet"));
6876 do_cleanups (back_to
);
6880 remote_flash_write (struct target_ops
*ops
,
6881 ULONGEST address
, LONGEST length
,
6882 const gdb_byte
*data
)
6884 int saved_remote_timeout
= remote_timeout
;
6886 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6887 &saved_remote_timeout
);
6889 remote_timeout
= remote_flash_timeout
;
6890 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6891 do_cleanups (back_to
);
6897 remote_flash_done (struct target_ops
*ops
)
6899 int saved_remote_timeout
= remote_timeout
;
6901 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6902 &saved_remote_timeout
);
6904 remote_timeout
= remote_flash_timeout
;
6905 ret
= remote_send_printf ("vFlashDone");
6906 do_cleanups (back_to
);
6910 case PACKET_UNKNOWN
:
6911 error (_("Remote target does not support vFlashDone"));
6913 error (_("Error finishing flash operation"));
6920 remote_files_info (struct target_ops
*ignore
)
6922 puts_filtered ("Debugging a target over a serial line.\n");
6925 /* Stuff for dealing with the packets which are part of this protocol.
6926 See comment at top of file for details. */
6928 /* Read a single character from the remote end. */
6931 readchar (int timeout
)
6935 ch
= serial_readchar (remote_desc
, timeout
);
6940 switch ((enum serial_rc
) ch
)
6944 error (_("Remote connection closed"));
6948 perror_with_name (_("Remote communication error. "
6949 "Target disconnected."));
6951 case SERIAL_TIMEOUT
:
6957 /* Send the command in *BUF to the remote machine, and read the reply
6958 into *BUF. Report an error if we get an error reply. Resize
6959 *BUF using xrealloc if necessary to hold the result, and update
6963 remote_send (char **buf
,
6967 getpkt (buf
, sizeof_buf
, 0);
6969 if ((*buf
)[0] == 'E')
6970 error (_("Remote failure reply: %s"), *buf
);
6973 /* Return a pointer to an xmalloc'ed string representing an escaped
6974 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6975 etc. The caller is responsible for releasing the returned
6979 escape_buffer (const char *buf
, int n
)
6981 struct cleanup
*old_chain
;
6982 struct ui_file
*stb
;
6985 stb
= mem_fileopen ();
6986 old_chain
= make_cleanup_ui_file_delete (stb
);
6988 fputstrn_unfiltered (buf
, n
, 0, stb
);
6989 str
= ui_file_xstrdup (stb
, NULL
);
6990 do_cleanups (old_chain
);
6994 /* Display a null-terminated packet on stdout, for debugging, using C
6998 print_packet (char *buf
)
7000 puts_filtered ("\"");
7001 fputstr_filtered (buf
, '"', gdb_stdout
);
7002 puts_filtered ("\"");
7008 return putpkt_binary (buf
, strlen (buf
));
7011 /* Send a packet to the remote machine, with error checking. The data
7012 of the packet is in BUF. The string in BUF can be at most
7013 get_remote_packet_size () - 5 to account for the $, # and checksum,
7014 and for a possible /0 if we are debugging (remote_debug) and want
7015 to print the sent packet as a string. */
7018 putpkt_binary (char *buf
, int cnt
)
7020 struct remote_state
*rs
= get_remote_state ();
7022 unsigned char csum
= 0;
7023 char *buf2
= alloca (cnt
+ 6);
7029 /* Catch cases like trying to read memory or listing threads while
7030 we're waiting for a stop reply. The remote server wouldn't be
7031 ready to handle this request, so we'd hang and timeout. We don't
7032 have to worry about this in synchronous mode, because in that
7033 case it's not possible to issue a command while the target is
7034 running. This is not a problem in non-stop mode, because in that
7035 case, the stub is always ready to process serial input. */
7036 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7037 error (_("Cannot execute this command while the target is running."));
7039 /* We're sending out a new packet. Make sure we don't look at a
7040 stale cached response. */
7041 rs
->cached_wait_status
= 0;
7043 /* Copy the packet into buffer BUF2, encapsulating it
7044 and giving it a checksum. */
7049 for (i
= 0; i
< cnt
; i
++)
7055 *p
++ = tohex ((csum
>> 4) & 0xf);
7056 *p
++ = tohex (csum
& 0xf);
7058 /* Send it over and over until we get a positive ack. */
7062 int started_error_output
= 0;
7066 struct cleanup
*old_chain
;
7070 str
= escape_buffer (buf2
, p
- buf2
);
7071 old_chain
= make_cleanup (xfree
, str
);
7072 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7073 gdb_flush (gdb_stdlog
);
7074 do_cleanups (old_chain
);
7076 if (serial_write (remote_desc
, buf2
, p
- buf2
))
7077 perror_with_name (_("putpkt: write failed"));
7079 /* If this is a no acks version of the remote protocol, send the
7080 packet and move on. */
7084 /* Read until either a timeout occurs (-2) or '+' is read.
7085 Handle any notification that arrives in the mean time. */
7088 ch
= readchar (remote_timeout
);
7096 case SERIAL_TIMEOUT
:
7099 if (started_error_output
)
7101 putchar_unfiltered ('\n');
7102 started_error_output
= 0;
7111 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7115 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7117 case SERIAL_TIMEOUT
:
7121 break; /* Retransmit buffer. */
7125 fprintf_unfiltered (gdb_stdlog
,
7126 "Packet instead of Ack, ignoring it\n");
7127 /* It's probably an old response sent because an ACK
7128 was lost. Gobble up the packet and ack it so it
7129 doesn't get retransmitted when we resend this
7132 serial_write (remote_desc
, "+", 1);
7133 continue; /* Now, go look for +. */
7140 /* If we got a notification, handle it, and go back to looking
7142 /* We've found the start of a notification. Now
7143 collect the data. */
7144 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7149 struct cleanup
*old_chain
;
7152 str
= escape_buffer (rs
->buf
, val
);
7153 old_chain
= make_cleanup (xfree
, str
);
7154 fprintf_unfiltered (gdb_stdlog
,
7155 " Notification received: %s\n",
7157 do_cleanups (old_chain
);
7159 handle_notification (rs
->buf
);
7160 /* We're in sync now, rewait for the ack. */
7167 if (!started_error_output
)
7169 started_error_output
= 1;
7170 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7172 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7173 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7182 if (!started_error_output
)
7184 started_error_output
= 1;
7185 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7187 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7191 break; /* Here to retransmit. */
7195 /* This is wrong. If doing a long backtrace, the user should be
7196 able to get out next time we call QUIT, without anything as
7197 violent as interrupt_query. If we want to provide a way out of
7198 here without getting to the next QUIT, it should be based on
7199 hitting ^C twice as in remote_wait. */
7210 /* Come here after finding the start of a frame when we expected an
7211 ack. Do our best to discard the rest of this packet. */
7220 c
= readchar (remote_timeout
);
7223 case SERIAL_TIMEOUT
:
7224 /* Nothing we can do. */
7227 /* Discard the two bytes of checksum and stop. */
7228 c
= readchar (remote_timeout
);
7230 c
= readchar (remote_timeout
);
7233 case '*': /* Run length encoding. */
7234 /* Discard the repeat count. */
7235 c
= readchar (remote_timeout
);
7240 /* A regular character. */
7246 /* Come here after finding the start of the frame. Collect the rest
7247 into *BUF, verifying the checksum, length, and handling run-length
7248 compression. NUL terminate the buffer. If there is not enough room,
7249 expand *BUF using xrealloc.
7251 Returns -1 on error, number of characters in buffer (ignoring the
7252 trailing NULL) on success. (could be extended to return one of the
7253 SERIAL status indications). */
7256 read_frame (char **buf_p
,
7263 struct remote_state
*rs
= get_remote_state ();
7270 c
= readchar (remote_timeout
);
7273 case SERIAL_TIMEOUT
:
7275 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7279 fputs_filtered ("Saw new packet start in middle of old one\n",
7281 return -1; /* Start a new packet, count retries. */
7284 unsigned char pktcsum
;
7290 check_0
= readchar (remote_timeout
);
7292 check_1
= readchar (remote_timeout
);
7294 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7297 fputs_filtered ("Timeout in checksum, retrying\n",
7301 else if (check_0
< 0 || check_1
< 0)
7304 fputs_filtered ("Communication error in checksum\n",
7309 /* Don't recompute the checksum; with no ack packets we
7310 don't have any way to indicate a packet retransmission
7315 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7316 if (csum
== pktcsum
)
7321 struct cleanup
*old_chain
;
7324 str
= escape_buffer (buf
, bc
);
7325 old_chain
= make_cleanup (xfree
, str
);
7326 fprintf_unfiltered (gdb_stdlog
,
7327 "Bad checksum, sentsum=0x%x, "
7328 "csum=0x%x, buf=%s\n",
7329 pktcsum
, csum
, str
);
7330 do_cleanups (old_chain
);
7332 /* Number of characters in buffer ignoring trailing
7336 case '*': /* Run length encoding. */
7341 c
= readchar (remote_timeout
);
7343 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7345 /* The character before ``*'' is repeated. */
7347 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7349 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7351 /* Make some more room in the buffer. */
7352 *sizeof_buf
+= repeat
;
7353 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7357 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7363 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7367 if (bc
>= *sizeof_buf
- 1)
7369 /* Make some more room in the buffer. */
7371 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7382 /* Read a packet from the remote machine, with error checking, and
7383 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7384 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7385 rather than timing out; this is used (in synchronous mode) to wait
7386 for a target that is is executing user code to stop. */
7387 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7388 don't have to change all the calls to getpkt to deal with the
7389 return value, because at the moment I don't know what the right
7390 thing to do it for those. */
7398 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7402 /* Read a packet from the remote machine, with error checking, and
7403 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7404 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7405 rather than timing out; this is used (in synchronous mode) to wait
7406 for a target that is is executing user code to stop. If FOREVER ==
7407 0, this function is allowed to time out gracefully and return an
7408 indication of this to the caller. Otherwise return the number of
7409 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7410 enough reason to return to the caller. */
7413 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7414 int expecting_notif
)
7416 struct remote_state
*rs
= get_remote_state ();
7422 /* We're reading a new response. Make sure we don't look at a
7423 previously cached response. */
7424 rs
->cached_wait_status
= 0;
7426 strcpy (*buf
, "timeout");
7429 timeout
= watchdog
> 0 ? watchdog
: -1;
7430 else if (expecting_notif
)
7431 timeout
= 0; /* There should already be a char in the buffer. If
7434 timeout
= remote_timeout
;
7438 /* Process any number of notifications, and then return when
7442 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7444 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7446 /* This can loop forever if the remote side sends us
7447 characters continuously, but if it pauses, we'll get
7448 SERIAL_TIMEOUT from readchar because of timeout. Then
7449 we'll count that as a retry.
7451 Note that even when forever is set, we will only wait
7452 forever prior to the start of a packet. After that, we
7453 expect characters to arrive at a brisk pace. They should
7454 show up within remote_timeout intervals. */
7456 c
= readchar (timeout
);
7457 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7459 if (c
== SERIAL_TIMEOUT
)
7461 if (expecting_notif
)
7462 return -1; /* Don't complain, it's normal to not get
7463 anything in this case. */
7465 if (forever
) /* Watchdog went off? Kill the target. */
7469 error (_("Watchdog timeout has expired. Target detached."));
7472 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7476 /* We've found the start of a packet or notification.
7477 Now collect the data. */
7478 val
= read_frame (buf
, sizeof_buf
);
7483 serial_write (remote_desc
, "-", 1);
7486 if (tries
> MAX_TRIES
)
7488 /* We have tried hard enough, and just can't receive the
7489 packet/notification. Give up. */
7490 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7492 /* Skip the ack char if we're in no-ack mode. */
7493 if (!rs
->noack_mode
)
7494 serial_write (remote_desc
, "+", 1);
7498 /* If we got an ordinary packet, return that to our caller. */
7503 struct cleanup
*old_chain
;
7506 str
= escape_buffer (*buf
, val
);
7507 old_chain
= make_cleanup (xfree
, str
);
7508 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7509 do_cleanups (old_chain
);
7512 /* Skip the ack char if we're in no-ack mode. */
7513 if (!rs
->noack_mode
)
7514 serial_write (remote_desc
, "+", 1);
7518 /* If we got a notification, handle it, and go back to looking
7522 gdb_assert (c
== '%');
7526 struct cleanup
*old_chain
;
7529 str
= escape_buffer (*buf
, val
);
7530 old_chain
= make_cleanup (xfree
, str
);
7531 fprintf_unfiltered (gdb_stdlog
,
7532 " Notification received: %s\n",
7534 do_cleanups (old_chain
);
7537 handle_notification (*buf
);
7539 /* Notifications require no acknowledgement. */
7541 if (expecting_notif
)
7548 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7550 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7554 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7556 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7560 /* A helper function that just calls putpkt; for type correctness. */
7563 putpkt_for_catch_errors (void *arg
)
7565 return putpkt (arg
);
7569 remote_kill (struct target_ops
*ops
)
7571 /* Use catch_errors so the user can quit from gdb even when we
7572 aren't on speaking terms with the remote system. */
7573 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7575 /* Don't wait for it to die. I'm not really sure it matters whether
7576 we do or not. For the existing stubs, kill is a noop. */
7577 target_mourn_inferior ();
7581 remote_vkill (int pid
, struct remote_state
*rs
)
7583 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7586 /* Tell the remote target to detach. */
7587 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7589 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7591 if (packet_ok (rs
->buf
,
7592 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7594 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7601 extended_remote_kill (struct target_ops
*ops
)
7604 int pid
= ptid_get_pid (inferior_ptid
);
7605 struct remote_state
*rs
= get_remote_state ();
7607 res
= remote_vkill (pid
, rs
);
7608 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7610 /* Don't try 'k' on a multi-process aware stub -- it has no way
7611 to specify the pid. */
7615 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7616 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7619 /* Don't wait for it to die. I'm not really sure it matters whether
7620 we do or not. For the existing stubs, kill is a noop. */
7626 error (_("Can't kill process"));
7628 target_mourn_inferior ();
7632 remote_mourn (struct target_ops
*ops
)
7634 remote_mourn_1 (ops
);
7637 /* Worker function for remote_mourn. */
7639 remote_mourn_1 (struct target_ops
*target
)
7641 unpush_target (target
);
7643 /* remote_close takes care of doing most of the clean up. */
7644 generic_mourn_inferior ();
7648 extended_remote_mourn_1 (struct target_ops
*target
)
7650 struct remote_state
*rs
= get_remote_state ();
7652 /* In case we got here due to an error, but we're going to stay
7654 rs
->waiting_for_stop_reply
= 0;
7656 /* We're no longer interested in these events. */
7657 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7659 /* If the current general thread belonged to the process we just
7660 detached from or has exited, the remote side current general
7661 thread becomes undefined. Considering a case like this:
7663 - We just got here due to a detach.
7664 - The process that we're detaching from happens to immediately
7665 report a global breakpoint being hit in non-stop mode, in the
7666 same thread we had selected before.
7667 - GDB attaches to this process again.
7668 - This event happens to be the next event we handle.
7670 GDB would consider that the current general thread didn't need to
7671 be set on the stub side (with Hg), since for all it knew,
7672 GENERAL_THREAD hadn't changed.
7674 Notice that although in all-stop mode, the remote server always
7675 sets the current thread to the thread reporting the stop event,
7676 that doesn't happen in non-stop mode; in non-stop, the stub *must
7677 not* change the current thread when reporting a breakpoint hit,
7678 due to the decoupling of event reporting and event handling.
7680 To keep things simple, we always invalidate our notion of the
7682 record_currthread (minus_one_ptid
);
7684 /* Unlike "target remote", we do not want to unpush the target; then
7685 the next time the user says "run", we won't be connected. */
7687 /* Call common code to mark the inferior as not running. */
7688 generic_mourn_inferior ();
7690 if (!have_inferiors ())
7692 if (!remote_multi_process_p (rs
))
7694 /* Check whether the target is running now - some remote stubs
7695 automatically restart after kill. */
7697 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7699 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7701 /* Assume that the target has been restarted. Set
7702 inferior_ptid so that bits of core GDB realizes
7703 there's something here, e.g., so that the user can
7704 say "kill" again. */
7705 inferior_ptid
= magic_null_ptid
;
7712 extended_remote_mourn (struct target_ops
*ops
)
7714 extended_remote_mourn_1 (ops
);
7718 extended_remote_supports_disable_randomization (void)
7720 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7725 extended_remote_disable_randomization (int val
)
7727 struct remote_state
*rs
= get_remote_state ();
7730 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7733 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7735 error (_("Target does not support QDisableRandomization."));
7736 if (strcmp (reply
, "OK") != 0)
7737 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7741 extended_remote_run (char *args
)
7743 struct remote_state
*rs
= get_remote_state ();
7746 /* If the user has disabled vRun support, or we have detected that
7747 support is not available, do not try it. */
7748 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7751 strcpy (rs
->buf
, "vRun;");
7752 len
= strlen (rs
->buf
);
7754 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7755 error (_("Remote file name too long for run packet"));
7756 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7758 gdb_assert (args
!= NULL
);
7761 struct cleanup
*back_to
;
7765 argv
= gdb_buildargv (args
);
7766 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7767 for (i
= 0; argv
[i
] != NULL
; i
++)
7769 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7770 error (_("Argument list too long for run packet"));
7771 rs
->buf
[len
++] = ';';
7772 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7774 do_cleanups (back_to
);
7777 rs
->buf
[len
++] = '\0';
7780 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7782 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7784 /* We have a wait response; we don't need it, though. All is well. */
7787 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7788 /* It wasn't disabled before, but it is now. */
7792 if (remote_exec_file
[0] == '\0')
7793 error (_("Running the default executable on the remote target failed; "
7794 "try \"set remote exec-file\"?"));
7796 error (_("Running \"%s\" on the remote target failed"),
7801 /* In the extended protocol we want to be able to do things like
7802 "run" and have them basically work as expected. So we need
7803 a special create_inferior function. We support changing the
7804 executable file and the command line arguments, but not the
7808 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7809 char **env
, int from_tty
)
7811 /* If running asynchronously, register the target file descriptor
7812 with the event loop. */
7813 if (target_can_async_p ())
7814 target_async (inferior_event_handler
, 0);
7816 /* Disable address space randomization if requested (and supported). */
7817 if (extended_remote_supports_disable_randomization ())
7818 extended_remote_disable_randomization (disable_randomization
);
7820 /* Now restart the remote server. */
7821 if (extended_remote_run (args
) == -1)
7823 /* vRun was not supported. Fail if we need it to do what the
7825 if (remote_exec_file
[0])
7826 error (_("Remote target does not support \"set remote exec-file\""));
7828 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7830 /* Fall back to "R". */
7831 extended_remote_restart ();
7834 if (!have_inferiors ())
7836 /* Clean up from the last time we ran, before we mark the target
7837 running again. This will mark breakpoints uninserted, and
7838 get_offsets may insert breakpoints. */
7839 init_thread_list ();
7840 init_wait_for_inferior ();
7843 add_current_inferior_and_thread ();
7845 /* Get updated offsets, if the stub uses qOffsets. */
7850 extended_remote_create_inferior (struct target_ops
*ops
,
7851 char *exec_file
, char *args
,
7852 char **env
, int from_tty
)
7854 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7858 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7859 the list of conditions (in agent expression bytecode format), if any, the
7860 target needs to evaluate. The output is placed into the packet buffer
7861 started from BUF and ended at BUF_END. */
7864 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7865 struct bp_target_info
*bp_tgt
, char *buf
,
7868 struct agent_expr
*aexpr
= NULL
;
7871 char *buf_start
= buf
;
7873 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7876 buf
+= strlen (buf
);
7877 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
7880 /* Send conditions to the target and free the vector. */
7882 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
7885 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
7886 buf
+= strlen (buf
);
7887 for (i
= 0; i
< aexpr
->len
; ++i
)
7888 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7892 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
7897 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
7898 struct bp_target_info
*bp_tgt
, char *buf
)
7900 struct agent_expr
*aexpr
= NULL
;
7903 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
7906 buf
+= strlen (buf
);
7908 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
7909 buf
+= strlen (buf
);
7911 /* Concatenate all the agent expressions that are commands into the
7914 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
7917 sprintf (buf
, "X%x,", aexpr
->len
);
7918 buf
+= strlen (buf
);
7919 for (i
= 0; i
< aexpr
->len
; ++i
)
7920 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7924 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
7927 /* Insert a breakpoint. On targets that have software breakpoint
7928 support, we ask the remote target to do the work; on targets
7929 which don't, we insert a traditional memory breakpoint. */
7932 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7933 struct bp_target_info
*bp_tgt
)
7935 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7936 If it succeeds, then set the support to PACKET_ENABLE. If it
7937 fails, and the user has explicitly requested the Z support then
7938 report an error, otherwise, mark it disabled and go on. */
7940 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7942 CORE_ADDR addr
= bp_tgt
->placed_address
;
7943 struct remote_state
*rs
;
7946 struct condition_list
*cond
= NULL
;
7948 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7950 rs
= get_remote_state ();
7952 endbuf
= rs
->buf
+ get_remote_packet_size ();
7957 addr
= (ULONGEST
) remote_address_masked (addr
);
7958 p
+= hexnumstr (p
, addr
);
7959 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
7961 if (remote_supports_cond_breakpoints ())
7962 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
7964 if (remote_can_run_breakpoint_commands ())
7965 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
7968 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7970 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7975 bp_tgt
->placed_address
= addr
;
7976 bp_tgt
->placed_size
= bpsize
;
7978 case PACKET_UNKNOWN
:
7983 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7987 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7988 struct bp_target_info
*bp_tgt
)
7990 CORE_ADDR addr
= bp_tgt
->placed_address
;
7991 struct remote_state
*rs
= get_remote_state ();
7993 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7996 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8002 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8003 p
+= hexnumstr (p
, addr
);
8004 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8007 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8009 return (rs
->buf
[0] == 'E');
8012 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8016 watchpoint_to_Z_packet (int type
)
8021 return Z_PACKET_WRITE_WP
;
8024 return Z_PACKET_READ_WP
;
8027 return Z_PACKET_ACCESS_WP
;
8030 internal_error (__FILE__
, __LINE__
,
8031 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8036 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8037 struct expression
*cond
)
8039 struct remote_state
*rs
= get_remote_state ();
8040 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8042 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8044 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8047 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8048 p
= strchr (rs
->buf
, '\0');
8049 addr
= remote_address_masked (addr
);
8050 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8051 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8054 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8056 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8060 case PACKET_UNKNOWN
:
8065 internal_error (__FILE__
, __LINE__
,
8066 _("remote_insert_watchpoint: reached end of function"));
8070 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8071 CORE_ADDR start
, int length
)
8073 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8075 return diff
< length
;
8080 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8081 struct expression
*cond
)
8083 struct remote_state
*rs
= get_remote_state ();
8084 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8086 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8088 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8091 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8092 p
= strchr (rs
->buf
, '\0');
8093 addr
= remote_address_masked (addr
);
8094 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8095 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8097 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8099 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8102 case PACKET_UNKNOWN
:
8107 internal_error (__FILE__
, __LINE__
,
8108 _("remote_remove_watchpoint: reached end of function"));
8112 int remote_hw_watchpoint_limit
= -1;
8113 int remote_hw_watchpoint_length_limit
= -1;
8114 int remote_hw_breakpoint_limit
= -1;
8117 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8119 if (remote_hw_watchpoint_length_limit
== 0)
8121 else if (remote_hw_watchpoint_length_limit
< 0)
8123 else if (len
<= remote_hw_watchpoint_length_limit
)
8130 remote_check_watch_resources (int type
, int cnt
, int ot
)
8132 if (type
== bp_hardware_breakpoint
)
8134 if (remote_hw_breakpoint_limit
== 0)
8136 else if (remote_hw_breakpoint_limit
< 0)
8138 else if (cnt
<= remote_hw_breakpoint_limit
)
8143 if (remote_hw_watchpoint_limit
== 0)
8145 else if (remote_hw_watchpoint_limit
< 0)
8149 else if (cnt
<= remote_hw_watchpoint_limit
)
8156 remote_stopped_by_watchpoint (void)
8158 return remote_stopped_by_watchpoint_p
;
8162 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8166 if (remote_stopped_by_watchpoint ())
8168 *addr_p
= remote_watch_data_address
;
8177 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8178 struct bp_target_info
*bp_tgt
)
8181 struct remote_state
*rs
;
8184 /* The length field should be set to the size of a breakpoint
8185 instruction, even though we aren't inserting one ourselves. */
8187 gdbarch_remote_breakpoint_from_pc
8188 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8190 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8193 rs
= get_remote_state ();
8195 endbuf
= rs
->buf
+ get_remote_packet_size ();
8201 addr
= remote_address_masked (bp_tgt
->placed_address
);
8202 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8203 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8205 if (remote_supports_cond_breakpoints ())
8206 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8208 if (remote_can_run_breakpoint_commands ())
8209 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8212 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8214 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8217 case PACKET_UNKNOWN
:
8222 internal_error (__FILE__
, __LINE__
,
8223 _("remote_insert_hw_breakpoint: reached end of function"));
8228 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8229 struct bp_target_info
*bp_tgt
)
8232 struct remote_state
*rs
= get_remote_state ();
8234 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8236 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8243 addr
= remote_address_masked (bp_tgt
->placed_address
);
8244 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8245 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8248 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8250 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8253 case PACKET_UNKNOWN
:
8258 internal_error (__FILE__
, __LINE__
,
8259 _("remote_remove_hw_breakpoint: reached end of function"));
8262 /* Table used by the crc32 function to calcuate the checksum. */
8264 static unsigned long crc32_table
[256] =
8267 static unsigned long
8268 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8270 if (!crc32_table
[1])
8272 /* Initialize the CRC table and the decoding table. */
8276 for (i
= 0; i
< 256; i
++)
8278 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8279 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8286 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8292 /* Verify memory using the "qCRC:" request. */
8295 remote_verify_memory (struct target_ops
*ops
,
8296 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8298 struct remote_state
*rs
= get_remote_state ();
8299 unsigned long host_crc
, target_crc
;
8302 /* FIXME: assumes lma can fit into long. */
8303 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8304 (long) lma
, (long) size
);
8307 /* Be clever; compute the host_crc before waiting for target
8309 host_crc
= crc32 (data
, size
, 0xffffffff);
8311 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8312 if (rs
->buf
[0] == 'E')
8315 if (rs
->buf
[0] != 'C')
8316 error (_("remote target does not support this operation"));
8318 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8319 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8321 return (host_crc
== target_crc
);
8324 /* compare-sections command
8326 With no arguments, compares each loadable section in the exec bfd
8327 with the same memory range on the target, and reports mismatches.
8328 Useful for verifying the image on the target against the exec file. */
8331 compare_sections_command (char *args
, int from_tty
)
8334 struct cleanup
*old_chain
;
8336 const char *sectname
;
8344 error (_("command cannot be used without an exec file"));
8346 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8348 if (!(s
->flags
& SEC_LOAD
))
8349 continue; /* Skip non-loadable section. */
8351 size
= bfd_get_section_size (s
);
8353 continue; /* Skip zero-length section. */
8355 sectname
= bfd_get_section_name (exec_bfd
, s
);
8356 if (args
&& strcmp (args
, sectname
) != 0)
8357 continue; /* Not the section selected by user. */
8359 matched
= 1; /* Do this section. */
8362 sectdata
= xmalloc (size
);
8363 old_chain
= make_cleanup (xfree
, sectdata
);
8364 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8366 res
= target_verify_memory (sectdata
, lma
, size
);
8369 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8370 paddress (target_gdbarch
, lma
),
8371 paddress (target_gdbarch
, lma
+ size
));
8373 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8374 paddress (target_gdbarch
, lma
),
8375 paddress (target_gdbarch
, lma
+ size
));
8377 printf_filtered ("matched.\n");
8380 printf_filtered ("MIS-MATCHED!\n");
8384 do_cleanups (old_chain
);
8387 warning (_("One or more sections of the remote executable does not match\n\
8388 the loaded file\n"));
8389 if (args
&& !matched
)
8390 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8393 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8394 into remote target. The number of bytes written to the remote
8395 target is returned, or -1 for error. */
8398 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8399 const char *annex
, const gdb_byte
*writebuf
,
8400 ULONGEST offset
, LONGEST len
,
8401 struct packet_config
*packet
)
8405 struct remote_state
*rs
= get_remote_state ();
8406 int max_size
= get_memory_write_packet_size ();
8408 if (packet
->support
== PACKET_DISABLE
)
8411 /* Insert header. */
8412 i
= snprintf (rs
->buf
, max_size
,
8413 "qXfer:%s:write:%s:%s:",
8414 object_name
, annex
? annex
: "",
8415 phex_nz (offset
, sizeof offset
));
8416 max_size
-= (i
+ 1);
8418 /* Escape as much data as fits into rs->buf. */
8419 buf_len
= remote_escape_output
8420 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8422 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8423 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8424 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8427 unpack_varlen_hex (rs
->buf
, &n
);
8431 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8432 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8433 number of bytes read is returned, or 0 for EOF, or -1 for error.
8434 The number of bytes read may be less than LEN without indicating an
8435 EOF. PACKET is checked and updated to indicate whether the remote
8436 target supports this object. */
8439 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8441 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8442 struct packet_config
*packet
)
8444 static char *finished_object
;
8445 static char *finished_annex
;
8446 static ULONGEST finished_offset
;
8448 struct remote_state
*rs
= get_remote_state ();
8449 LONGEST i
, n
, packet_len
;
8451 if (packet
->support
== PACKET_DISABLE
)
8454 /* Check whether we've cached an end-of-object packet that matches
8456 if (finished_object
)
8458 if (strcmp (object_name
, finished_object
) == 0
8459 && strcmp (annex
? annex
: "", finished_annex
) == 0
8460 && offset
== finished_offset
)
8463 /* Otherwise, we're now reading something different. Discard
8465 xfree (finished_object
);
8466 xfree (finished_annex
);
8467 finished_object
= NULL
;
8468 finished_annex
= NULL
;
8471 /* Request only enough to fit in a single packet. The actual data
8472 may not, since we don't know how much of it will need to be escaped;
8473 the target is free to respond with slightly less data. We subtract
8474 five to account for the response type and the protocol frame. */
8475 n
= min (get_remote_packet_size () - 5, len
);
8476 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8477 object_name
, annex
? annex
: "",
8478 phex_nz (offset
, sizeof offset
),
8479 phex_nz (n
, sizeof n
));
8480 i
= putpkt (rs
->buf
);
8485 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8486 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8489 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8490 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8492 /* 'm' means there is (or at least might be) more data after this
8493 batch. That does not make sense unless there's at least one byte
8494 of data in this reply. */
8495 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8496 error (_("Remote qXfer reply contained no data."));
8498 /* Got some data. */
8499 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8501 /* 'l' is an EOF marker, possibly including a final block of data,
8502 or possibly empty. If we have the final block of a non-empty
8503 object, record this fact to bypass a subsequent partial read. */
8504 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8506 finished_object
= xstrdup (object_name
);
8507 finished_annex
= xstrdup (annex
? annex
: "");
8508 finished_offset
= offset
+ i
;
8515 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8516 const char *annex
, gdb_byte
*readbuf
,
8517 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8519 struct remote_state
*rs
;
8524 set_remote_traceframe ();
8525 set_general_thread (inferior_ptid
);
8527 rs
= get_remote_state ();
8529 /* Handle memory using the standard memory routines. */
8530 if (object
== TARGET_OBJECT_MEMORY
)
8536 /* If the remote target is connected but not running, we should
8537 pass this request down to a lower stratum (e.g. the executable
8539 if (!target_has_execution
)
8542 if (writebuf
!= NULL
)
8543 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8545 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8549 else if (xfered
== 0 && errno
== 0)
8555 /* Handle SPU memory using qxfer packets. */
8556 if (object
== TARGET_OBJECT_SPU
)
8559 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8560 &remote_protocol_packets
8561 [PACKET_qXfer_spu_read
]);
8563 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8564 &remote_protocol_packets
8565 [PACKET_qXfer_spu_write
]);
8568 /* Handle extra signal info using qxfer packets. */
8569 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8572 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8573 &remote_protocol_packets
8574 [PACKET_qXfer_siginfo_read
]);
8576 return remote_write_qxfer (ops
, "siginfo", annex
,
8577 writebuf
, offset
, len
,
8578 &remote_protocol_packets
8579 [PACKET_qXfer_siginfo_write
]);
8582 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8585 return remote_read_qxfer (ops
, "statictrace", annex
,
8586 readbuf
, offset
, len
,
8587 &remote_protocol_packets
8588 [PACKET_qXfer_statictrace_read
]);
8593 /* Only handle flash writes. */
8594 if (writebuf
!= NULL
)
8600 case TARGET_OBJECT_FLASH
:
8601 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8605 else if (xfered
== 0 && errno
== 0)
8615 /* Map pre-existing objects onto letters. DO NOT do this for new
8616 objects!!! Instead specify new query packets. */
8619 case TARGET_OBJECT_AVR
:
8623 case TARGET_OBJECT_AUXV
:
8624 gdb_assert (annex
== NULL
);
8625 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8626 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8628 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8629 return remote_read_qxfer
8630 (ops
, "features", annex
, readbuf
, offset
, len
,
8631 &remote_protocol_packets
[PACKET_qXfer_features
]);
8633 case TARGET_OBJECT_LIBRARIES
:
8634 return remote_read_qxfer
8635 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8636 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8638 case TARGET_OBJECT_LIBRARIES_SVR4
:
8639 return remote_read_qxfer
8640 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8641 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8643 case TARGET_OBJECT_MEMORY_MAP
:
8644 gdb_assert (annex
== NULL
);
8645 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8646 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8648 case TARGET_OBJECT_OSDATA
:
8649 /* Should only get here if we're connected. */
8650 gdb_assert (remote_desc
);
8651 return remote_read_qxfer
8652 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8653 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8655 case TARGET_OBJECT_THREADS
:
8656 gdb_assert (annex
== NULL
);
8657 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8658 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8660 case TARGET_OBJECT_TRACEFRAME_INFO
:
8661 gdb_assert (annex
== NULL
);
8662 return remote_read_qxfer
8663 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8664 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8666 case TARGET_OBJECT_FDPIC
:
8667 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8668 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8670 case TARGET_OBJECT_OPENVMS_UIB
:
8671 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8672 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8678 /* Note: a zero OFFSET and LEN can be used to query the minimum
8680 if (offset
== 0 && len
== 0)
8681 return (get_remote_packet_size ());
8682 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8683 large enough let the caller deal with it. */
8684 if (len
< get_remote_packet_size ())
8686 len
= get_remote_packet_size ();
8688 /* Except for querying the minimum buffer size, target must be open. */
8690 error (_("remote query is only available after target open"));
8692 gdb_assert (annex
!= NULL
);
8693 gdb_assert (readbuf
!= NULL
);
8699 /* We used one buffer char for the remote protocol q command and
8700 another for the query type. As the remote protocol encapsulation
8701 uses 4 chars plus one extra in case we are debugging
8702 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8705 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8707 /* Bad caller may have sent forbidden characters. */
8708 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8713 gdb_assert (annex
[i
] == '\0');
8715 i
= putpkt (rs
->buf
);
8719 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8720 strcpy ((char *) readbuf
, rs
->buf
);
8722 return strlen ((char *) readbuf
);
8726 remote_search_memory (struct target_ops
* ops
,
8727 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8728 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8729 CORE_ADDR
*found_addrp
)
8731 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8732 struct remote_state
*rs
= get_remote_state ();
8733 int max_size
= get_memory_write_packet_size ();
8734 struct packet_config
*packet
=
8735 &remote_protocol_packets
[PACKET_qSearch_memory
];
8736 /* Number of packet bytes used to encode the pattern;
8737 this could be more than PATTERN_LEN due to escape characters. */
8738 int escaped_pattern_len
;
8739 /* Amount of pattern that was encodable in the packet. */
8740 int used_pattern_len
;
8743 ULONGEST found_addr
;
8745 /* Don't go to the target if we don't have to.
8746 This is done before checking packet->support to avoid the possibility that
8747 a success for this edge case means the facility works in general. */
8748 if (pattern_len
> search_space_len
)
8750 if (pattern_len
== 0)
8752 *found_addrp
= start_addr
;
8756 /* If we already know the packet isn't supported, fall back to the simple
8757 way of searching memory. */
8759 if (packet
->support
== PACKET_DISABLE
)
8761 /* Target doesn't provided special support, fall back and use the
8762 standard support (copy memory and do the search here). */
8763 return simple_search_memory (ops
, start_addr
, search_space_len
,
8764 pattern
, pattern_len
, found_addrp
);
8767 /* Insert header. */
8768 i
= snprintf (rs
->buf
, max_size
,
8769 "qSearch:memory:%s;%s;",
8770 phex_nz (start_addr
, addr_size
),
8771 phex_nz (search_space_len
, sizeof (search_space_len
)));
8772 max_size
-= (i
+ 1);
8774 /* Escape as much data as fits into rs->buf. */
8775 escaped_pattern_len
=
8776 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8777 &used_pattern_len
, max_size
);
8779 /* Bail if the pattern is too large. */
8780 if (used_pattern_len
!= pattern_len
)
8781 error (_("Pattern is too large to transmit to remote target."));
8783 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8784 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8785 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8787 /* The request may not have worked because the command is not
8788 supported. If so, fall back to the simple way. */
8789 if (packet
->support
== PACKET_DISABLE
)
8791 return simple_search_memory (ops
, start_addr
, search_space_len
,
8792 pattern
, pattern_len
, found_addrp
);
8797 if (rs
->buf
[0] == '0')
8799 else if (rs
->buf
[0] == '1')
8802 if (rs
->buf
[1] != ',')
8803 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8804 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8805 *found_addrp
= found_addr
;
8808 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8814 remote_rcmd (char *command
,
8815 struct ui_file
*outbuf
)
8817 struct remote_state
*rs
= get_remote_state ();
8821 error (_("remote rcmd is only available after target open"));
8823 /* Send a NULL command across as an empty command. */
8824 if (command
== NULL
)
8827 /* The query prefix. */
8828 strcpy (rs
->buf
, "qRcmd,");
8829 p
= strchr (rs
->buf
, '\0');
8831 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8832 > get_remote_packet_size ())
8833 error (_("\"monitor\" command ``%s'' is too long."), command
);
8835 /* Encode the actual command. */
8836 bin2hex ((gdb_byte
*) command
, p
, 0);
8838 if (putpkt (rs
->buf
) < 0)
8839 error (_("Communication problem with target."));
8841 /* get/display the response */
8846 /* XXX - see also remote_get_noisy_reply(). */
8847 QUIT
; /* Allow user to bail out with ^C. */
8849 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8851 /* Timeout. Continue to (try to) read responses.
8852 This is better than stopping with an error, assuming the stub
8853 is still executing the (long) monitor command.
8854 If needed, the user can interrupt gdb using C-c, obtaining
8855 an effect similar to stop on timeout. */
8860 error (_("Target does not support this command."));
8861 if (buf
[0] == 'O' && buf
[1] != 'K')
8863 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8866 if (strcmp (buf
, "OK") == 0)
8868 if (strlen (buf
) == 3 && buf
[0] == 'E'
8869 && isdigit (buf
[1]) && isdigit (buf
[2]))
8871 error (_("Protocol error with Rcmd"));
8873 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8875 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8877 fputc_unfiltered (c
, outbuf
);
8883 static VEC(mem_region_s
) *
8884 remote_memory_map (struct target_ops
*ops
)
8886 VEC(mem_region_s
) *result
= NULL
;
8887 char *text
= target_read_stralloc (¤t_target
,
8888 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8892 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8894 result
= parse_memory_map (text
);
8895 do_cleanups (back_to
);
8902 packet_command (char *args
, int from_tty
)
8904 struct remote_state
*rs
= get_remote_state ();
8907 error (_("command can only be used with remote target"));
8910 error (_("remote-packet command requires packet text as argument"));
8912 puts_filtered ("sending: ");
8913 print_packet (args
);
8914 puts_filtered ("\n");
8917 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8918 puts_filtered ("received: ");
8919 print_packet (rs
->buf
);
8920 puts_filtered ("\n");
8924 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8926 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8928 static void threadset_test_cmd (char *cmd
, int tty
);
8930 static void threadalive_test (char *cmd
, int tty
);
8932 static void threadlist_test_cmd (char *cmd
, int tty
);
8934 int get_and_display_threadinfo (threadref
*ref
);
8936 static void threadinfo_test_cmd (char *cmd
, int tty
);
8938 static int thread_display_step (threadref
*ref
, void *context
);
8940 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8942 static void init_remote_threadtests (void);
8944 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8947 threadset_test_cmd (char *cmd
, int tty
)
8949 int sample_thread
= SAMPLE_THREAD
;
8951 printf_filtered (_("Remote threadset test\n"));
8952 set_general_thread (sample_thread
);
8957 threadalive_test (char *cmd
, int tty
)
8959 int sample_thread
= SAMPLE_THREAD
;
8960 int pid
= ptid_get_pid (inferior_ptid
);
8961 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8963 if (remote_thread_alive (ptid
))
8964 printf_filtered ("PASS: Thread alive test\n");
8966 printf_filtered ("FAIL: Thread alive test\n");
8969 void output_threadid (char *title
, threadref
*ref
);
8972 output_threadid (char *title
, threadref
*ref
)
8976 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8978 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8982 threadlist_test_cmd (char *cmd
, int tty
)
8985 threadref nextthread
;
8986 int done
, result_count
;
8987 threadref threadlist
[3];
8989 printf_filtered ("Remote Threadlist test\n");
8990 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8991 &result_count
, &threadlist
[0]))
8992 printf_filtered ("FAIL: threadlist test\n");
8995 threadref
*scan
= threadlist
;
8996 threadref
*limit
= scan
+ result_count
;
8998 while (scan
< limit
)
8999 output_threadid (" thread ", scan
++);
9004 display_thread_info (struct gdb_ext_thread_info
*info
)
9006 output_threadid ("Threadid: ", &info
->threadid
);
9007 printf_filtered ("Name: %s\n ", info
->shortname
);
9008 printf_filtered ("State: %s\n", info
->display
);
9009 printf_filtered ("other: %s\n\n", info
->more_display
);
9013 get_and_display_threadinfo (threadref
*ref
)
9017 struct gdb_ext_thread_info threadinfo
;
9019 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9020 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9021 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9022 display_thread_info (&threadinfo
);
9027 threadinfo_test_cmd (char *cmd
, int tty
)
9029 int athread
= SAMPLE_THREAD
;
9033 int_to_threadref (&thread
, athread
);
9034 printf_filtered ("Remote Threadinfo test\n");
9035 if (!get_and_display_threadinfo (&thread
))
9036 printf_filtered ("FAIL cannot get thread info\n");
9040 thread_display_step (threadref
*ref
, void *context
)
9042 /* output_threadid(" threadstep ",ref); *//* simple test */
9043 return get_and_display_threadinfo (ref
);
9047 threadlist_update_test_cmd (char *cmd
, int tty
)
9049 printf_filtered ("Remote Threadlist update test\n");
9050 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9054 init_remote_threadtests (void)
9056 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9057 _("Fetch and print the remote list of "
9058 "thread identifiers, one pkt only"));
9059 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9060 _("Fetch and display info about one thread"));
9061 add_com ("tset", class_obscure
, threadset_test_cmd
,
9062 _("Test setting to a different thread"));
9063 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9064 _("Iterate through updating all remote thread info"));
9065 add_com ("talive", class_obscure
, threadalive_test
,
9066 _(" Remote thread alive test "));
9071 /* Convert a thread ID to a string. Returns the string in a static
9075 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9077 static char buf
[64];
9078 struct remote_state
*rs
= get_remote_state ();
9080 if (ptid_equal (ptid
, null_ptid
))
9081 return normal_pid_to_str (ptid
);
9082 else if (ptid_is_pid (ptid
))
9084 /* Printing an inferior target id. */
9086 /* When multi-process extensions are off, there's no way in the
9087 remote protocol to know the remote process id, if there's any
9088 at all. There's one exception --- when we're connected with
9089 target extended-remote, and we manually attached to a process
9090 with "attach PID". We don't record anywhere a flag that
9091 allows us to distinguish that case from the case of
9092 connecting with extended-remote and the stub already being
9093 attached to a process, and reporting yes to qAttached, hence
9094 no smart special casing here. */
9095 if (!remote_multi_process_p (rs
))
9097 xsnprintf (buf
, sizeof buf
, "Remote target");
9101 return normal_pid_to_str (ptid
);
9105 if (ptid_equal (magic_null_ptid
, ptid
))
9106 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9107 else if (rs
->extended
&& remote_multi_process_p (rs
))
9108 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9109 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9111 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9112 ptid_get_tid (ptid
));
9117 /* Get the address of the thread local variable in OBJFILE which is
9118 stored at OFFSET within the thread local storage for thread PTID. */
9121 remote_get_thread_local_address (struct target_ops
*ops
,
9122 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9124 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9126 struct remote_state
*rs
= get_remote_state ();
9128 char *endp
= rs
->buf
+ get_remote_packet_size ();
9129 enum packet_result result
;
9131 strcpy (p
, "qGetTLSAddr:");
9133 p
= write_ptid (p
, endp
, ptid
);
9135 p
+= hexnumstr (p
, offset
);
9137 p
+= hexnumstr (p
, lm
);
9141 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9142 result
= packet_ok (rs
->buf
,
9143 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9144 if (result
== PACKET_OK
)
9148 unpack_varlen_hex (rs
->buf
, &result
);
9151 else if (result
== PACKET_UNKNOWN
)
9152 throw_error (TLS_GENERIC_ERROR
,
9153 _("Remote target doesn't support qGetTLSAddr packet"));
9155 throw_error (TLS_GENERIC_ERROR
,
9156 _("Remote target failed to process qGetTLSAddr request"));
9159 throw_error (TLS_GENERIC_ERROR
,
9160 _("TLS not supported or disabled on this target"));
9165 /* Provide thread local base, i.e. Thread Information Block address.
9166 Returns 1 if ptid is found and thread_local_base is non zero. */
9169 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9171 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9173 struct remote_state
*rs
= get_remote_state ();
9175 char *endp
= rs
->buf
+ get_remote_packet_size ();
9176 enum packet_result result
;
9178 strcpy (p
, "qGetTIBAddr:");
9180 p
= write_ptid (p
, endp
, ptid
);
9184 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9185 result
= packet_ok (rs
->buf
,
9186 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9187 if (result
== PACKET_OK
)
9191 unpack_varlen_hex (rs
->buf
, &result
);
9193 *addr
= (CORE_ADDR
) result
;
9196 else if (result
== PACKET_UNKNOWN
)
9197 error (_("Remote target doesn't support qGetTIBAddr packet"));
9199 error (_("Remote target failed to process qGetTIBAddr request"));
9202 error (_("qGetTIBAddr not supported or disabled on this target"));
9207 /* Support for inferring a target description based on the current
9208 architecture and the size of a 'g' packet. While the 'g' packet
9209 can have any size (since optional registers can be left off the
9210 end), some sizes are easily recognizable given knowledge of the
9211 approximate architecture. */
9213 struct remote_g_packet_guess
9216 const struct target_desc
*tdesc
;
9218 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9219 DEF_VEC_O(remote_g_packet_guess_s
);
9221 struct remote_g_packet_data
9223 VEC(remote_g_packet_guess_s
) *guesses
;
9226 static struct gdbarch_data
*remote_g_packet_data_handle
;
9229 remote_g_packet_data_init (struct obstack
*obstack
)
9231 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9235 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9236 const struct target_desc
*tdesc
)
9238 struct remote_g_packet_data
*data
9239 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9240 struct remote_g_packet_guess new_guess
, *guess
;
9243 gdb_assert (tdesc
!= NULL
);
9246 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9248 if (guess
->bytes
== bytes
)
9249 internal_error (__FILE__
, __LINE__
,
9250 _("Duplicate g packet description added for size %d"),
9253 new_guess
.bytes
= bytes
;
9254 new_guess
.tdesc
= tdesc
;
9255 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9258 /* Return 1 if remote_read_description would do anything on this target
9259 and architecture, 0 otherwise. */
9262 remote_read_description_p (struct target_ops
*target
)
9264 struct remote_g_packet_data
*data
9265 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9267 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9273 static const struct target_desc
*
9274 remote_read_description (struct target_ops
*target
)
9276 struct remote_g_packet_data
*data
9277 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9279 /* Do not try this during initial connection, when we do not know
9280 whether there is a running but stopped thread. */
9281 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9284 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9286 struct remote_g_packet_guess
*guess
;
9288 int bytes
= send_g_packet ();
9291 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9293 if (guess
->bytes
== bytes
)
9294 return guess
->tdesc
;
9296 /* We discard the g packet. A minor optimization would be to
9297 hold on to it, and fill the register cache once we have selected
9298 an architecture, but it's too tricky to do safely. */
9304 /* Remote file transfer support. This is host-initiated I/O, not
9305 target-initiated; for target-initiated, see remote-fileio.c. */
9307 /* If *LEFT is at least the length of STRING, copy STRING to
9308 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9309 decrease *LEFT. Otherwise raise an error. */
9312 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9314 int len
= strlen (string
);
9317 error (_("Packet too long for target."));
9319 memcpy (*buffer
, string
, len
);
9323 /* NUL-terminate the buffer as a convenience, if there is
9329 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9330 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9331 decrease *LEFT. Otherwise raise an error. */
9334 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9337 if (2 * len
> *left
)
9338 error (_("Packet too long for target."));
9340 bin2hex (bytes
, *buffer
, len
);
9344 /* NUL-terminate the buffer as a convenience, if there is
9350 /* If *LEFT is large enough, convert VALUE to hex and add it to
9351 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9352 decrease *LEFT. Otherwise raise an error. */
9355 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9357 int len
= hexnumlen (value
);
9360 error (_("Packet too long for target."));
9362 hexnumstr (*buffer
, value
);
9366 /* NUL-terminate the buffer as a convenience, if there is
9372 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9373 value, *REMOTE_ERRNO to the remote error number or zero if none
9374 was included, and *ATTACHMENT to point to the start of the annex
9375 if any. The length of the packet isn't needed here; there may
9376 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9378 Return 0 if the packet could be parsed, -1 if it could not. If
9379 -1 is returned, the other variables may not be initialized. */
9382 remote_hostio_parse_result (char *buffer
, int *retcode
,
9383 int *remote_errno
, char **attachment
)
9390 if (buffer
[0] != 'F')
9394 *retcode
= strtol (&buffer
[1], &p
, 16);
9395 if (errno
!= 0 || p
== &buffer
[1])
9398 /* Check for ",errno". */
9402 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9403 if (errno
!= 0 || p
+ 1 == p2
)
9408 /* Check for ";attachment". If there is no attachment, the
9409 packet should end here. */
9412 *attachment
= p
+ 1;
9415 else if (*p
== '\0')
9421 /* Send a prepared I/O packet to the target and read its response.
9422 The prepared packet is in the global RS->BUF before this function
9423 is called, and the answer is there when we return.
9425 COMMAND_BYTES is the length of the request to send, which may include
9426 binary data. WHICH_PACKET is the packet configuration to check
9427 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9428 is set to the error number and -1 is returned. Otherwise the value
9429 returned by the function is returned.
9431 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9432 attachment is expected; an error will be reported if there's a
9433 mismatch. If one is found, *ATTACHMENT will be set to point into
9434 the packet buffer and *ATTACHMENT_LEN will be set to the
9435 attachment's length. */
9438 remote_hostio_send_command (int command_bytes
, int which_packet
,
9439 int *remote_errno
, char **attachment
,
9440 int *attachment_len
)
9442 struct remote_state
*rs
= get_remote_state ();
9443 int ret
, bytes_read
;
9444 char *attachment_tmp
;
9447 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9449 *remote_errno
= FILEIO_ENOSYS
;
9453 putpkt_binary (rs
->buf
, command_bytes
);
9454 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9456 /* If it timed out, something is wrong. Don't try to parse the
9460 *remote_errno
= FILEIO_EINVAL
;
9464 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9467 *remote_errno
= FILEIO_EINVAL
;
9469 case PACKET_UNKNOWN
:
9470 *remote_errno
= FILEIO_ENOSYS
;
9476 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9479 *remote_errno
= FILEIO_EINVAL
;
9483 /* Make sure we saw an attachment if and only if we expected one. */
9484 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9485 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9487 *remote_errno
= FILEIO_EINVAL
;
9491 /* If an attachment was found, it must point into the packet buffer;
9492 work out how many bytes there were. */
9493 if (attachment_tmp
!= NULL
)
9495 *attachment
= attachment_tmp
;
9496 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9502 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9503 remote file descriptor, or -1 if an error occurs (and set
9507 remote_hostio_open (const char *filename
, int flags
, int mode
,
9510 struct remote_state
*rs
= get_remote_state ();
9512 int left
= get_remote_packet_size () - 1;
9514 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9516 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9518 remote_buffer_add_string (&p
, &left
, ",");
9520 remote_buffer_add_int (&p
, &left
, flags
);
9521 remote_buffer_add_string (&p
, &left
, ",");
9523 remote_buffer_add_int (&p
, &left
, mode
);
9525 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9526 remote_errno
, NULL
, NULL
);
9529 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9530 Return the number of bytes written, or -1 if an error occurs (and
9531 set *REMOTE_ERRNO). */
9534 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9535 ULONGEST offset
, int *remote_errno
)
9537 struct remote_state
*rs
= get_remote_state ();
9539 int left
= get_remote_packet_size ();
9542 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9544 remote_buffer_add_int (&p
, &left
, fd
);
9545 remote_buffer_add_string (&p
, &left
, ",");
9547 remote_buffer_add_int (&p
, &left
, offset
);
9548 remote_buffer_add_string (&p
, &left
, ",");
9550 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9551 get_remote_packet_size () - (p
- rs
->buf
));
9553 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9554 remote_errno
, NULL
, NULL
);
9557 /* Read up to LEN bytes FD on the remote target into READ_BUF
9558 Return the number of bytes read, or -1 if an error occurs (and
9559 set *REMOTE_ERRNO). */
9562 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9563 ULONGEST offset
, int *remote_errno
)
9565 struct remote_state
*rs
= get_remote_state ();
9568 int left
= get_remote_packet_size ();
9569 int ret
, attachment_len
;
9572 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9574 remote_buffer_add_int (&p
, &left
, fd
);
9575 remote_buffer_add_string (&p
, &left
, ",");
9577 remote_buffer_add_int (&p
, &left
, len
);
9578 remote_buffer_add_string (&p
, &left
, ",");
9580 remote_buffer_add_int (&p
, &left
, offset
);
9582 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9583 remote_errno
, &attachment
,
9589 read_len
= remote_unescape_input (attachment
, attachment_len
,
9591 if (read_len
!= ret
)
9592 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9597 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9598 (and set *REMOTE_ERRNO). */
9601 remote_hostio_close (int fd
, int *remote_errno
)
9603 struct remote_state
*rs
= get_remote_state ();
9605 int left
= get_remote_packet_size () - 1;
9607 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9609 remote_buffer_add_int (&p
, &left
, fd
);
9611 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9612 remote_errno
, NULL
, NULL
);
9615 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9616 occurs (and set *REMOTE_ERRNO). */
9619 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9621 struct remote_state
*rs
= get_remote_state ();
9623 int left
= get_remote_packet_size () - 1;
9625 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9627 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9630 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9631 remote_errno
, NULL
, NULL
);
9634 /* Read value of symbolic link FILENAME on the remote target. Return
9635 a null-terminated string allocated via xmalloc, or NULL if an error
9636 occurs (and set *REMOTE_ERRNO). */
9639 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9641 struct remote_state
*rs
= get_remote_state ();
9644 int left
= get_remote_packet_size ();
9645 int len
, attachment_len
;
9649 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9651 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9654 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9655 remote_errno
, &attachment
,
9661 ret
= xmalloc (len
+ 1);
9663 read_len
= remote_unescape_input (attachment
, attachment_len
,
9665 if (read_len
!= len
)
9666 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9673 remote_fileio_errno_to_host (int errnum
)
9697 case FILEIO_ENOTDIR
:
9717 case FILEIO_ENAMETOOLONG
:
9718 return ENAMETOOLONG
;
9724 remote_hostio_error (int errnum
)
9726 int host_error
= remote_fileio_errno_to_host (errnum
);
9728 if (host_error
== -1)
9729 error (_("Unknown remote I/O error %d"), errnum
);
9731 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9735 remote_hostio_close_cleanup (void *opaque
)
9737 int fd
= *(int *) opaque
;
9740 remote_hostio_close (fd
, &remote_errno
);
9745 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9747 const char *filename
= bfd_get_filename (abfd
);
9748 int fd
, remote_errno
;
9751 gdb_assert (remote_filename_p (filename
));
9753 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9756 errno
= remote_fileio_errno_to_host (remote_errno
);
9757 bfd_set_error (bfd_error_system_call
);
9761 stream
= xmalloc (sizeof (int));
9767 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9769 int fd
= *(int *)stream
;
9774 /* Ignore errors on close; these may happen if the remote
9775 connection was already torn down. */
9776 remote_hostio_close (fd
, &remote_errno
);
9782 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9783 file_ptr nbytes
, file_ptr offset
)
9785 int fd
= *(int *)stream
;
9787 file_ptr pos
, bytes
;
9790 while (nbytes
> pos
)
9792 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9793 offset
+ pos
, &remote_errno
);
9795 /* Success, but no bytes, means end-of-file. */
9799 errno
= remote_fileio_errno_to_host (remote_errno
);
9800 bfd_set_error (bfd_error_system_call
);
9811 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9813 /* FIXME: We should probably implement remote_hostio_stat. */
9814 sb
->st_size
= INT_MAX
;
9819 remote_filename_p (const char *filename
)
9821 return strncmp (filename
, "remote:", 7) == 0;
9825 remote_bfd_open (const char *remote_file
, const char *target
)
9827 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9828 remote_bfd_iovec_open
, NULL
,
9829 remote_bfd_iovec_pread
,
9830 remote_bfd_iovec_close
,
9831 remote_bfd_iovec_stat
);
9837 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9839 struct cleanup
*back_to
, *close_cleanup
;
9840 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9843 int bytes_in_buffer
;
9848 error (_("command can only be used with remote target"));
9850 file
= fopen (local_file
, "rb");
9852 perror_with_name (local_file
);
9853 back_to
= make_cleanup_fclose (file
);
9855 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9857 0700, &remote_errno
);
9859 remote_hostio_error (remote_errno
);
9861 /* Send up to this many bytes at once. They won't all fit in the
9862 remote packet limit, so we'll transfer slightly fewer. */
9863 io_size
= get_remote_packet_size ();
9864 buffer
= xmalloc (io_size
);
9865 make_cleanup (xfree
, buffer
);
9867 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9869 bytes_in_buffer
= 0;
9872 while (bytes_in_buffer
|| !saw_eof
)
9876 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9877 io_size
- bytes_in_buffer
,
9882 error (_("Error reading %s."), local_file
);
9885 /* EOF. Unless there is something still in the
9886 buffer from the last iteration, we are done. */
9888 if (bytes_in_buffer
== 0)
9896 bytes
+= bytes_in_buffer
;
9897 bytes_in_buffer
= 0;
9899 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9900 offset
, &remote_errno
);
9903 remote_hostio_error (remote_errno
);
9904 else if (retcode
== 0)
9905 error (_("Remote write of %d bytes returned 0!"), bytes
);
9906 else if (retcode
< bytes
)
9908 /* Short write. Save the rest of the read data for the next
9910 bytes_in_buffer
= bytes
- retcode
;
9911 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9917 discard_cleanups (close_cleanup
);
9918 if (remote_hostio_close (fd
, &remote_errno
))
9919 remote_hostio_error (remote_errno
);
9922 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9923 do_cleanups (back_to
);
9927 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9929 struct cleanup
*back_to
, *close_cleanup
;
9930 int fd
, remote_errno
, bytes
, io_size
;
9936 error (_("command can only be used with remote target"));
9938 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9940 remote_hostio_error (remote_errno
);
9942 file
= fopen (local_file
, "wb");
9944 perror_with_name (local_file
);
9945 back_to
= make_cleanup_fclose (file
);
9947 /* Send up to this many bytes at once. They won't all fit in the
9948 remote packet limit, so we'll transfer slightly fewer. */
9949 io_size
= get_remote_packet_size ();
9950 buffer
= xmalloc (io_size
);
9951 make_cleanup (xfree
, buffer
);
9953 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9958 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9960 /* Success, but no bytes, means end-of-file. */
9963 remote_hostio_error (remote_errno
);
9967 bytes
= fwrite (buffer
, 1, bytes
, file
);
9969 perror_with_name (local_file
);
9972 discard_cleanups (close_cleanup
);
9973 if (remote_hostio_close (fd
, &remote_errno
))
9974 remote_hostio_error (remote_errno
);
9977 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9978 do_cleanups (back_to
);
9982 remote_file_delete (const char *remote_file
, int from_tty
)
9984 int retcode
, remote_errno
;
9987 error (_("command can only be used with remote target"));
9989 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9991 remote_hostio_error (remote_errno
);
9994 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9998 remote_put_command (char *args
, int from_tty
)
10000 struct cleanup
*back_to
;
10004 error_no_arg (_("file to put"));
10006 argv
= gdb_buildargv (args
);
10007 back_to
= make_cleanup_freeargv (argv
);
10008 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10009 error (_("Invalid parameters to remote put"));
10011 remote_file_put (argv
[0], argv
[1], from_tty
);
10013 do_cleanups (back_to
);
10017 remote_get_command (char *args
, int from_tty
)
10019 struct cleanup
*back_to
;
10023 error_no_arg (_("file to get"));
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 get"));
10030 remote_file_get (argv
[0], argv
[1], from_tty
);
10032 do_cleanups (back_to
);
10036 remote_delete_command (char *args
, int from_tty
)
10038 struct cleanup
*back_to
;
10042 error_no_arg (_("file to delete"));
10044 argv
= gdb_buildargv (args
);
10045 back_to
= make_cleanup_freeargv (argv
);
10046 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10047 error (_("Invalid parameters to remote delete"));
10049 remote_file_delete (argv
[0], from_tty
);
10051 do_cleanups (back_to
);
10055 remote_command (char *args
, int from_tty
)
10057 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10061 remote_can_execute_reverse (void)
10063 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10064 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10071 remote_supports_non_stop (void)
10077 remote_supports_disable_randomization (void)
10079 /* Only supported in extended mode. */
10084 remote_supports_multi_process (void)
10086 struct remote_state
*rs
= get_remote_state ();
10088 /* Only extended-remote handles being attached to multiple
10089 processes, even though plain remote can use the multi-process
10090 thread id extensions, so that GDB knows the target process's
10092 return rs
->extended
&& remote_multi_process_p (rs
);
10096 remote_supports_cond_tracepoints (void)
10098 struct remote_state
*rs
= get_remote_state ();
10100 return rs
->cond_tracepoints
;
10104 remote_supports_cond_breakpoints (void)
10106 struct remote_state
*rs
= get_remote_state ();
10108 return rs
->cond_breakpoints
;
10112 remote_supports_fast_tracepoints (void)
10114 struct remote_state
*rs
= get_remote_state ();
10116 return rs
->fast_tracepoints
;
10120 remote_supports_static_tracepoints (void)
10122 struct remote_state
*rs
= get_remote_state ();
10124 return rs
->static_tracepoints
;
10128 remote_supports_install_in_trace (void)
10130 struct remote_state
*rs
= get_remote_state ();
10132 return rs
->install_in_trace
;
10136 remote_supports_enable_disable_tracepoint (void)
10138 struct remote_state
*rs
= get_remote_state ();
10140 return rs
->enable_disable_tracepoints
;
10144 remote_supports_string_tracing (void)
10146 struct remote_state
*rs
= get_remote_state ();
10148 return rs
->string_tracing
;
10152 remote_can_run_breakpoint_commands (void)
10154 struct remote_state
*rs
= get_remote_state ();
10156 return rs
->breakpoint_commands
;
10160 remote_trace_init (void)
10163 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10164 if (strcmp (target_buf
, "OK") != 0)
10165 error (_("Target does not support this command."));
10168 static void free_actions_list (char **actions_list
);
10169 static void free_actions_list_cleanup_wrapper (void *);
10171 free_actions_list_cleanup_wrapper (void *al
)
10173 free_actions_list (al
);
10177 free_actions_list (char **actions_list
)
10181 if (actions_list
== 0)
10184 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10185 xfree (actions_list
[ndx
]);
10187 xfree (actions_list
);
10190 /* Recursive routine to walk through command list including loops, and
10191 download packets for each command. */
10194 remote_download_command_source (int num
, ULONGEST addr
,
10195 struct command_line
*cmds
)
10197 struct remote_state
*rs
= get_remote_state ();
10198 struct command_line
*cmd
;
10200 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10202 QUIT
; /* Allow user to bail out with ^C. */
10203 strcpy (rs
->buf
, "QTDPsrc:");
10204 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10205 rs
->buf
+ strlen (rs
->buf
),
10206 rs
->buf_size
- strlen (rs
->buf
));
10208 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10209 if (strcmp (target_buf
, "OK"))
10210 warning (_("Target does not support source download."));
10212 if (cmd
->control_type
== while_control
10213 || cmd
->control_type
== while_stepping_control
)
10215 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10217 QUIT
; /* Allow user to bail out with ^C. */
10218 strcpy (rs
->buf
, "QTDPsrc:");
10219 encode_source_string (num
, addr
, "cmd", "end",
10220 rs
->buf
+ strlen (rs
->buf
),
10221 rs
->buf_size
- strlen (rs
->buf
));
10223 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10224 if (strcmp (target_buf
, "OK"))
10225 warning (_("Target does not support source download."));
10231 remote_download_tracepoint (struct bp_location
*loc
)
10233 #define BUF_SIZE 2048
10237 char buf
[BUF_SIZE
];
10238 char **tdp_actions
;
10239 char **stepping_actions
;
10241 struct cleanup
*old_chain
= NULL
;
10242 struct agent_expr
*aexpr
;
10243 struct cleanup
*aexpr_chain
= NULL
;
10245 struct breakpoint
*b
= loc
->owner
;
10246 struct tracepoint
*t
= (struct tracepoint
*) b
;
10248 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10249 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10251 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10254 tpaddr
= loc
->address
;
10255 sprintf_vma (addrbuf
, tpaddr
);
10256 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10257 addrbuf
, /* address */
10258 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10259 t
->step_count
, t
->pass_count
);
10260 /* Fast tracepoints are mostly handled by the target, but we can
10261 tell the target how big of an instruction block should be moved
10263 if (b
->type
== bp_fast_tracepoint
)
10265 /* Only test for support at download time; we may not know
10266 target capabilities at definition time. */
10267 if (remote_supports_fast_tracepoints ())
10271 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
10272 tpaddr
, &isize
, NULL
))
10273 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10276 /* If it passed validation at definition but fails now,
10277 something is very wrong. */
10278 internal_error (__FILE__
, __LINE__
,
10279 _("Fast tracepoint not "
10280 "valid during download"));
10283 /* Fast tracepoints are functionally identical to regular
10284 tracepoints, so don't take lack of support as a reason to
10285 give up on the trace run. */
10286 warning (_("Target does not support fast tracepoints, "
10287 "downloading %d as regular tracepoint"), b
->number
);
10289 else if (b
->type
== bp_static_tracepoint
)
10291 /* Only test for support at download time; we may not know
10292 target capabilities at definition time. */
10293 if (remote_supports_static_tracepoints ())
10295 struct static_tracepoint_marker marker
;
10297 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10298 strcat (buf
, ":S");
10300 error (_("Static tracepoint not valid during download"));
10303 /* Fast tracepoints are functionally identical to regular
10304 tracepoints, so don't take lack of support as a reason
10305 to give up on the trace run. */
10306 error (_("Target does not support static tracepoints"));
10308 /* If the tracepoint has a conditional, make it into an agent
10309 expression and append to the definition. */
10312 /* Only test support at download time, we may not know target
10313 capabilities at definition time. */
10314 if (remote_supports_cond_tracepoints ())
10316 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10317 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10318 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10320 pkt
= buf
+ strlen (buf
);
10321 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10322 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10324 do_cleanups (aexpr_chain
);
10327 warning (_("Target does not support conditional tracepoints, "
10328 "ignoring tp %d cond"), b
->number
);
10331 if (b
->commands
|| *default_collect
)
10334 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10335 if (strcmp (target_buf
, "OK"))
10336 error (_("Target does not support tracepoints."));
10338 /* do_single_steps (t); */
10341 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10343 QUIT
; /* Allow user to bail out with ^C. */
10344 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10345 b
->number
, addrbuf
, /* address */
10347 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10350 remote_get_noisy_reply (&target_buf
,
10352 if (strcmp (target_buf
, "OK"))
10353 error (_("Error on target while setting tracepoints."));
10356 if (stepping_actions
)
10358 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10360 QUIT
; /* Allow user to bail out with ^C. */
10361 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10362 b
->number
, addrbuf
, /* address */
10363 ((ndx
== 0) ? "S" : ""),
10364 stepping_actions
[ndx
],
10365 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10367 remote_get_noisy_reply (&target_buf
,
10369 if (strcmp (target_buf
, "OK"))
10370 error (_("Error on target while setting tracepoints."));
10374 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10377 if (b
->addr_string
)
10379 strcpy (buf
, "QTDPsrc:");
10380 encode_source_string (b
->number
, loc
->address
,
10381 "at", b
->addr_string
, buf
+ strlen (buf
),
10382 2048 - strlen (buf
));
10385 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10386 if (strcmp (target_buf
, "OK"))
10387 warning (_("Target does not support source download."));
10389 if (b
->cond_string
)
10391 strcpy (buf
, "QTDPsrc:");
10392 encode_source_string (b
->number
, loc
->address
,
10393 "cond", b
->cond_string
, buf
+ strlen (buf
),
10394 2048 - strlen (buf
));
10396 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10397 if (strcmp (target_buf
, "OK"))
10398 warning (_("Target does not support source download."));
10400 remote_download_command_source (b
->number
, loc
->address
,
10401 breakpoint_commands (b
));
10404 do_cleanups (old_chain
);
10408 remote_can_download_tracepoint (void)
10410 struct remote_state
*rs
= get_remote_state ();
10411 struct trace_status
*ts
;
10414 /* Don't try to install tracepoints until we've relocated our
10415 symbols, and fetched and merged the target's tracepoint list with
10417 if (rs
->starting_up
)
10420 ts
= current_trace_status ();
10421 status
= remote_get_trace_status (ts
);
10423 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10426 /* If we are in a tracing experiment, but remote stub doesn't support
10427 installing tracepoint in trace, we have to return. */
10428 if (!remote_supports_install_in_trace ())
10436 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10438 struct remote_state
*rs
= get_remote_state ();
10441 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10442 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10444 p
= rs
->buf
+ strlen (rs
->buf
);
10445 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10446 error (_("Trace state variable name too long for tsv definition packet"));
10447 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10450 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10451 if (*target_buf
== '\0')
10452 error (_("Target does not support this command."));
10453 if (strcmp (target_buf
, "OK") != 0)
10454 error (_("Error on target while downloading trace state variable."));
10458 remote_enable_tracepoint (struct bp_location
*location
)
10460 struct remote_state
*rs
= get_remote_state ();
10463 sprintf_vma (addr_buf
, location
->address
);
10464 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10465 location
->owner
->number
, addr_buf
);
10467 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10468 if (*rs
->buf
== '\0')
10469 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10470 if (strcmp (rs
->buf
, "OK") != 0)
10471 error (_("Error on target while enabling tracepoint."));
10475 remote_disable_tracepoint (struct bp_location
*location
)
10477 struct remote_state
*rs
= get_remote_state ();
10480 sprintf_vma (addr_buf
, location
->address
);
10481 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10482 location
->owner
->number
, addr_buf
);
10484 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10485 if (*rs
->buf
== '\0')
10486 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10487 if (strcmp (rs
->buf
, "OK") != 0)
10488 error (_("Error on target while disabling tracepoint."));
10492 remote_trace_set_readonly_regions (void)
10496 bfd_size_type size
;
10502 return; /* No information to give. */
10504 strcpy (target_buf
, "QTro");
10505 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10507 char tmp1
[40], tmp2
[40];
10510 if ((s
->flags
& SEC_LOAD
) == 0 ||
10511 /* (s->flags & SEC_CODE) == 0 || */
10512 (s
->flags
& SEC_READONLY
) == 0)
10516 vma
= bfd_get_section_vma (abfd
, s
);
10517 size
= bfd_get_section_size (s
);
10518 sprintf_vma (tmp1
, vma
);
10519 sprintf_vma (tmp2
, vma
+ size
);
10520 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10521 if (offset
+ sec_length
+ 1 > target_buf_size
)
10523 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10526 Too many sections for read-only sections definition packet."));
10529 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10531 offset
+= sec_length
;
10535 putpkt (target_buf
);
10536 getpkt (&target_buf
, &target_buf_size
, 0);
10541 remote_trace_start (void)
10543 putpkt ("QTStart");
10544 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10545 if (*target_buf
== '\0')
10546 error (_("Target does not support this command."));
10547 if (strcmp (target_buf
, "OK") != 0)
10548 error (_("Bogus reply from target: %s"), target_buf
);
10552 remote_get_trace_status (struct trace_status
*ts
)
10554 /* Initialize it just to avoid a GCC false warning. */
10556 /* FIXME we need to get register block size some other way. */
10557 extern int trace_regblock_size
;
10558 volatile struct gdb_exception ex
;
10560 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10562 putpkt ("qTStatus");
10564 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10566 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10570 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10574 /* If the remote target doesn't do tracing, flag it. */
10578 /* We're working with a live target. */
10581 /* Set some defaults. */
10582 ts
->running_known
= 0;
10583 ts
->stop_reason
= trace_stop_reason_unknown
;
10584 ts
->traceframe_count
= -1;
10585 ts
->buffer_free
= 0;
10588 error (_("Bogus trace status reply from target: %s"), target_buf
);
10590 parse_trace_status (p
, ts
);
10592 return ts
->running
;
10596 remote_get_tracepoint_status (struct breakpoint
*bp
,
10597 struct uploaded_tp
*utp
)
10599 struct remote_state
*rs
= get_remote_state ();
10601 struct bp_location
*loc
;
10602 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10603 size_t size
= get_remote_packet_size ();
10607 tp
->base
.hit_count
= 0;
10608 tp
->traceframe_usage
= 0;
10609 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10611 /* If the tracepoint was never downloaded, don't go asking for
10613 if (tp
->number_on_target
== 0)
10615 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10616 phex_nz (loc
->address
, 0));
10618 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10619 if (reply
&& *reply
)
10622 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10628 utp
->hit_count
= 0;
10629 utp
->traceframe_usage
= 0;
10630 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10631 phex_nz (utp
->addr
, 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 remote_trace_stop (void)
10646 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10647 if (*target_buf
== '\0')
10648 error (_("Target does not support this command."));
10649 if (strcmp (target_buf
, "OK") != 0)
10650 error (_("Bogus reply from target: %s"), target_buf
);
10654 remote_trace_find (enum trace_find_type type
, int num
,
10655 ULONGEST addr1
, ULONGEST addr2
,
10658 struct remote_state
*rs
= get_remote_state ();
10659 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10661 int target_frameno
= -1, target_tracept
= -1;
10663 /* Lookups other than by absolute frame number depend on the current
10664 trace selected, so make sure it is correct on the remote end
10666 if (type
!= tfind_number
)
10667 set_remote_traceframe ();
10670 strcpy (p
, "QTFrame:");
10671 p
= strchr (p
, '\0');
10675 xsnprintf (p
, endbuf
- p
, "%x", num
);
10678 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10681 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10684 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10685 phex_nz (addr2
, 0));
10687 case tfind_outside
:
10688 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10689 phex_nz (addr2
, 0));
10692 error (_("Unknown trace find type %d"), type
);
10696 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10697 if (*reply
== '\0')
10698 error (_("Target does not support this command."));
10700 while (reply
&& *reply
)
10705 target_frameno
= (int) strtol (p
, &reply
, 16);
10707 error (_("Unable to parse trace frame number"));
10708 /* Don't update our remote traceframe number cache on failure
10709 to select a remote traceframe. */
10710 if (target_frameno
== -1)
10715 target_tracept
= (int) strtol (p
, &reply
, 16);
10717 error (_("Unable to parse tracepoint number"));
10719 case 'O': /* "OK"? */
10720 if (reply
[1] == 'K' && reply
[2] == '\0')
10723 error (_("Bogus reply from target: %s"), reply
);
10726 error (_("Bogus reply from target: %s"), reply
);
10729 *tpp
= target_tracept
;
10731 remote_traceframe_number
= target_frameno
;
10732 return target_frameno
;
10736 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10738 struct remote_state
*rs
= get_remote_state ();
10742 set_remote_traceframe ();
10744 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10746 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10747 if (reply
&& *reply
)
10751 unpack_varlen_hex (reply
+ 1, &uval
);
10752 *val
= (LONGEST
) uval
;
10760 remote_save_trace_data (const char *filename
)
10762 struct remote_state
*rs
= get_remote_state ();
10766 strcpy (p
, "QTSave:");
10768 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10769 error (_("Remote file name too long for trace save packet"));
10770 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10773 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10774 if (*reply
== '\0')
10775 error (_("Target does not support this command."));
10776 if (strcmp (reply
, "OK") != 0)
10777 error (_("Bogus reply from target: %s"), reply
);
10781 /* This is basically a memory transfer, but needs to be its own packet
10782 because we don't know how the target actually organizes its trace
10783 memory, plus we want to be able to ask for as much as possible, but
10784 not be unhappy if we don't get as much as we ask for. */
10787 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10789 struct remote_state
*rs
= get_remote_state ();
10795 strcpy (p
, "qTBuffer:");
10797 p
+= hexnumstr (p
, offset
);
10799 p
+= hexnumstr (p
, len
);
10803 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10804 if (reply
&& *reply
)
10806 /* 'l' by itself means we're at the end of the buffer and
10807 there is nothing more to get. */
10811 /* Convert the reply into binary. Limit the number of bytes to
10812 convert according to our passed-in buffer size, rather than
10813 what was returned in the packet; if the target is
10814 unexpectedly generous and gives us a bigger reply than we
10815 asked for, we don't want to crash. */
10816 rslt
= hex2bin (target_buf
, buf
, len
);
10820 /* Something went wrong, flag as an error. */
10825 remote_set_disconnected_tracing (int val
)
10827 struct remote_state
*rs
= get_remote_state ();
10829 if (rs
->disconnected_tracing
)
10833 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10835 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10836 if (*reply
== '\0')
10837 error (_("Target does not support this command."));
10838 if (strcmp (reply
, "OK") != 0)
10839 error (_("Bogus reply from target: %s"), reply
);
10842 warning (_("Target does not support disconnected tracing."));
10846 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10848 struct thread_info
*info
= find_thread_ptid (ptid
);
10850 if (info
&& info
->private)
10851 return info
->private->core
;
10856 remote_set_circular_trace_buffer (int val
)
10858 struct remote_state
*rs
= get_remote_state ();
10861 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
10863 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10864 if (*reply
== '\0')
10865 error (_("Target does not support this command."));
10866 if (strcmp (reply
, "OK") != 0)
10867 error (_("Bogus reply from target: %s"), reply
);
10870 static struct traceframe_info
*
10871 remote_traceframe_info (void)
10875 text
= target_read_stralloc (¤t_target
,
10876 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10879 struct traceframe_info
*info
;
10880 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10882 info
= parse_traceframe_info (text
);
10883 do_cleanups (back_to
);
10890 /* Handle the qTMinFTPILen packet. Returns the minimum length of
10891 instruction on which a fast tracepoint may be placed. Returns -1
10892 if the packet is not supported, and 0 if the minimum instruction
10893 length is unknown. */
10896 remote_get_min_fast_tracepoint_insn_len (void)
10898 struct remote_state
*rs
= get_remote_state ();
10901 /* If we're not debugging a process yet, the IPA can't be
10903 if (!target_has_execution
)
10906 /* Make sure the remote is pointing at the right process. */
10907 set_general_process ();
10909 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
10911 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10912 if (*reply
== '\0')
10916 ULONGEST min_insn_len
;
10918 unpack_varlen_hex (reply
, &min_insn_len
);
10920 return (int) min_insn_len
;
10925 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
10927 struct remote_state
*rs
= get_remote_state ();
10929 char *buf
= rs
->buf
;
10930 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10933 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
10936 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
10937 nbytes
= bin2hex (user
, buf
, 0);
10943 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
10944 nbytes
= bin2hex (notes
, buf
, 0);
10950 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
10951 nbytes
= bin2hex (stop_notes
, buf
, 0);
10955 /* Ensure the buffer is terminated. */
10959 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10960 if (*reply
== '\0')
10963 if (strcmp (reply
, "OK") != 0)
10964 error (_("Bogus reply from target: %s"), reply
);
10970 remote_use_agent (int use
)
10972 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
10974 struct remote_state
*rs
= get_remote_state ();
10976 /* If the stub supports QAgent. */
10977 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
10979 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10981 if (strcmp (rs
->buf
, "OK") == 0)
10992 remote_can_use_agent (void)
10994 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
10998 init_remote_ops (void)
11000 remote_ops
.to_shortname
= "remote";
11001 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11002 remote_ops
.to_doc
=
11003 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11004 Specify the serial device it is connected to\n\
11005 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11006 remote_ops
.to_open
= remote_open
;
11007 remote_ops
.to_close
= remote_close
;
11008 remote_ops
.to_detach
= remote_detach
;
11009 remote_ops
.to_disconnect
= remote_disconnect
;
11010 remote_ops
.to_resume
= remote_resume
;
11011 remote_ops
.to_wait
= remote_wait
;
11012 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11013 remote_ops
.to_store_registers
= remote_store_registers
;
11014 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11015 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11016 remote_ops
.to_files_info
= remote_files_info
;
11017 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11018 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11019 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11020 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11021 remote_ops
.to_watchpoint_addr_within_range
=
11022 remote_watchpoint_addr_within_range
;
11023 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11024 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11025 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11026 remote_ops
.to_region_ok_for_hw_watchpoint
11027 = remote_region_ok_for_hw_watchpoint
;
11028 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11029 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11030 remote_ops
.to_kill
= remote_kill
;
11031 remote_ops
.to_load
= generic_load
;
11032 remote_ops
.to_mourn_inferior
= remote_mourn
;
11033 remote_ops
.to_pass_signals
= remote_pass_signals
;
11034 remote_ops
.to_program_signals
= remote_program_signals
;
11035 remote_ops
.to_thread_alive
= remote_thread_alive
;
11036 remote_ops
.to_find_new_threads
= remote_threads_info
;
11037 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11038 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11039 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11040 remote_ops
.to_stop
= remote_stop
;
11041 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11042 remote_ops
.to_rcmd
= remote_rcmd
;
11043 remote_ops
.to_log_command
= serial_log_command
;
11044 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11045 remote_ops
.to_stratum
= process_stratum
;
11046 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11047 remote_ops
.to_has_memory
= default_child_has_memory
;
11048 remote_ops
.to_has_stack
= default_child_has_stack
;
11049 remote_ops
.to_has_registers
= default_child_has_registers
;
11050 remote_ops
.to_has_execution
= default_child_has_execution
;
11051 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11052 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11053 remote_ops
.to_magic
= OPS_MAGIC
;
11054 remote_ops
.to_memory_map
= remote_memory_map
;
11055 remote_ops
.to_flash_erase
= remote_flash_erase
;
11056 remote_ops
.to_flash_done
= remote_flash_done
;
11057 remote_ops
.to_read_description
= remote_read_description
;
11058 remote_ops
.to_search_memory
= remote_search_memory
;
11059 remote_ops
.to_can_async_p
= remote_can_async_p
;
11060 remote_ops
.to_is_async_p
= remote_is_async_p
;
11061 remote_ops
.to_async
= remote_async
;
11062 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11063 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11064 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11065 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11066 remote_ops
.to_supports_disable_randomization
11067 = remote_supports_disable_randomization
;
11068 remote_ops
.to_fileio_open
= remote_hostio_open
;
11069 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11070 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11071 remote_ops
.to_fileio_close
= remote_hostio_close
;
11072 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11073 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11074 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11075 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11076 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11077 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11078 remote_ops
.to_trace_init
= remote_trace_init
;
11079 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11080 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11081 remote_ops
.to_download_trace_state_variable
11082 = remote_download_trace_state_variable
;
11083 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11084 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11085 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11086 remote_ops
.to_trace_start
= remote_trace_start
;
11087 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11088 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11089 remote_ops
.to_trace_stop
= remote_trace_stop
;
11090 remote_ops
.to_trace_find
= remote_trace_find
;
11091 remote_ops
.to_get_trace_state_variable_value
11092 = remote_get_trace_state_variable_value
;
11093 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11094 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11095 remote_ops
.to_upload_trace_state_variables
11096 = remote_upload_trace_state_variables
;
11097 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11098 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11099 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11100 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11101 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11102 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11103 remote_ops
.to_verify_memory
= remote_verify_memory
;
11104 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11105 remote_ops
.to_set_permissions
= remote_set_permissions
;
11106 remote_ops
.to_static_tracepoint_marker_at
11107 = remote_static_tracepoint_marker_at
;
11108 remote_ops
.to_static_tracepoint_markers_by_strid
11109 = remote_static_tracepoint_markers_by_strid
;
11110 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11111 remote_ops
.to_use_agent
= remote_use_agent
;
11112 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11115 /* Set up the extended remote vector by making a copy of the standard
11116 remote vector and adding to it. */
11119 init_extended_remote_ops (void)
11121 extended_remote_ops
= remote_ops
;
11123 extended_remote_ops
.to_shortname
= "extended-remote";
11124 extended_remote_ops
.to_longname
=
11125 "Extended remote serial target in gdb-specific protocol";
11126 extended_remote_ops
.to_doc
=
11127 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11128 Specify the serial device it is connected to (e.g. /dev/ttya).";
11129 extended_remote_ops
.to_open
= extended_remote_open
;
11130 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11131 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11132 extended_remote_ops
.to_detach
= extended_remote_detach
;
11133 extended_remote_ops
.to_attach
= extended_remote_attach
;
11134 extended_remote_ops
.to_kill
= extended_remote_kill
;
11135 extended_remote_ops
.to_supports_disable_randomization
11136 = extended_remote_supports_disable_randomization
;
11140 remote_can_async_p (void)
11142 if (!target_async_permitted
)
11143 /* We only enable async when the user specifically asks for it. */
11146 /* We're async whenever the serial device is. */
11147 return serial_can_async_p (remote_desc
);
11151 remote_is_async_p (void)
11153 if (!target_async_permitted
)
11154 /* We only enable async when the user specifically asks for it. */
11157 /* We're async whenever the serial device is. */
11158 return serial_is_async_p (remote_desc
);
11161 /* Pass the SERIAL event on and up to the client. One day this code
11162 will be able to delay notifying the client of an event until the
11163 point where an entire packet has been received. */
11165 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11167 static void *async_client_context
;
11168 static serial_event_ftype remote_async_serial_handler
;
11171 remote_async_serial_handler (struct serial
*scb
, void *context
)
11173 /* Don't propogate error information up to the client. Instead let
11174 the client find out about the error by querying the target. */
11175 async_client_callback (INF_REG_EVENT
, async_client_context
);
11179 remote_async_inferior_event_handler (gdb_client_data data
)
11181 inferior_event_handler (INF_REG_EVENT
, NULL
);
11185 remote_async_get_pending_events_handler (gdb_client_data data
)
11187 remote_get_pending_stop_replies ();
11191 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11192 void *context
), void *context
)
11194 if (callback
!= NULL
)
11196 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11197 async_client_callback
= callback
;
11198 async_client_context
= context
;
11201 serial_async (remote_desc
, NULL
, NULL
);
11205 set_remote_cmd (char *args
, int from_tty
)
11207 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11211 show_remote_cmd (char *args
, int from_tty
)
11213 /* We can't just use cmd_show_list here, because we want to skip
11214 the redundant "show remote Z-packet" and the legacy aliases. */
11215 struct cleanup
*showlist_chain
;
11216 struct cmd_list_element
*list
= remote_show_cmdlist
;
11217 struct ui_out
*uiout
= current_uiout
;
11219 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11220 for (; list
!= NULL
; list
= list
->next
)
11221 if (strcmp (list
->name
, "Z-packet") == 0)
11223 else if (list
->type
== not_set_cmd
)
11224 /* Alias commands are exactly like the original, except they
11225 don't have the normal type. */
11229 struct cleanup
*option_chain
11230 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11232 ui_out_field_string (uiout
, "name", list
->name
);
11233 ui_out_text (uiout
, ": ");
11234 if (list
->type
== show_cmd
)
11235 do_show_command ((char *) NULL
, from_tty
, list
);
11237 cmd_func (list
, NULL
, from_tty
);
11238 /* Close the tuple. */
11239 do_cleanups (option_chain
);
11242 /* Close the tuple. */
11243 do_cleanups (showlist_chain
);
11247 /* Function to be called whenever a new objfile (shlib) is detected. */
11249 remote_new_objfile (struct objfile
*objfile
)
11251 if (remote_desc
!= 0) /* Have a remote connection. */
11252 remote_check_symbols (objfile
);
11255 /* Pull all the tracepoints defined on the target and create local
11256 data structures representing them. We don't want to create real
11257 tracepoints yet, we don't want to mess up the user's existing
11261 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11263 struct remote_state
*rs
= get_remote_state ();
11266 /* Ask for a first packet of tracepoint definition. */
11268 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11270 while (*p
&& *p
!= 'l')
11272 parse_tracepoint_definition (p
, utpp
);
11273 /* Ask for another packet of tracepoint definition. */
11275 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11282 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11284 struct remote_state
*rs
= get_remote_state ();
11287 /* Ask for a first packet of variable definition. */
11289 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11291 while (*p
&& *p
!= 'l')
11293 parse_tsv_definition (p
, utsvp
);
11294 /* Ask for another packet of variable definition. */
11296 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11303 _initialize_remote (void)
11305 struct remote_state
*rs
;
11306 struct cmd_list_element
*cmd
;
11309 /* architecture specific data */
11310 remote_gdbarch_data_handle
=
11311 gdbarch_data_register_post_init (init_remote_state
);
11312 remote_g_packet_data_handle
=
11313 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11315 /* Initialize the per-target state. At the moment there is only one
11316 of these, not one per target. Only one target is active at a
11317 time. The default buffer size is unimportant; it will be expanded
11318 whenever a larger buffer is needed. */
11319 rs
= get_remote_state_raw ();
11320 rs
->buf_size
= 400;
11321 rs
->buf
= xmalloc (rs
->buf_size
);
11323 init_remote_ops ();
11324 add_target (&remote_ops
);
11326 init_extended_remote_ops ();
11327 add_target (&extended_remote_ops
);
11329 /* Hook into new objfile notification. */
11330 observer_attach_new_objfile (remote_new_objfile
);
11332 /* Set up signal handlers. */
11333 sigint_remote_token
=
11334 create_async_signal_handler (async_remote_interrupt
, NULL
);
11335 sigint_remote_twice_token
=
11336 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11339 init_remote_threadtests ();
11342 /* set/show remote ... */
11344 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11345 Remote protocol specific variables\n\
11346 Configure various remote-protocol specific variables such as\n\
11347 the packets being used"),
11348 &remote_set_cmdlist
, "set remote ",
11349 0 /* allow-unknown */, &setlist
);
11350 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11351 Remote protocol specific variables\n\
11352 Configure various remote-protocol specific variables such as\n\
11353 the packets being used"),
11354 &remote_show_cmdlist
, "show remote ",
11355 0 /* allow-unknown */, &showlist
);
11357 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11358 Compare section data on target to the exec file.\n\
11359 Argument is a single section name (default: all loaded sections)."),
11362 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11363 Send an arbitrary packet to a remote target.\n\
11364 maintenance packet TEXT\n\
11365 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11366 this command sends the string TEXT to the inferior, and displays the\n\
11367 response packet. GDB supplies the initial `$' character, and the\n\
11368 terminating `#' character and checksum."),
11371 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11372 Set whether to send break if interrupted."), _("\
11373 Show whether to send break if interrupted."), _("\
11374 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11375 set_remotebreak
, show_remotebreak
,
11376 &setlist
, &showlist
);
11377 cmd_name
= "remotebreak";
11378 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11379 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11380 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11381 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11382 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11384 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11385 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11387 Set interrupt sequence to remote target."), _("\
11388 Show interrupt sequence to remote target."), _("\
11389 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11390 NULL
, show_interrupt_sequence
,
11391 &remote_set_cmdlist
,
11392 &remote_show_cmdlist
);
11394 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11395 &interrupt_on_connect
, _("\
11396 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11397 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11398 If set, interrupt sequence is sent to remote target."),
11400 &remote_set_cmdlist
, &remote_show_cmdlist
);
11402 /* Install commands for configuring memory read/write packets. */
11404 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11405 Set the maximum number of bytes per memory write packet (deprecated)."),
11407 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11408 Show the maximum number of bytes per memory write packet (deprecated)."),
11410 add_cmd ("memory-write-packet-size", no_class
,
11411 set_memory_write_packet_size
, _("\
11412 Set the maximum number of bytes per memory-write packet.\n\
11413 Specify the number of bytes in a packet or 0 (zero) for the\n\
11414 default packet size. The actual limit is further reduced\n\
11415 dependent on the target. Specify ``fixed'' to disable the\n\
11416 further restriction and ``limit'' to enable that restriction."),
11417 &remote_set_cmdlist
);
11418 add_cmd ("memory-read-packet-size", no_class
,
11419 set_memory_read_packet_size
, _("\
11420 Set the maximum number of bytes per memory-read packet.\n\
11421 Specify the number of bytes in a packet or 0 (zero) for the\n\
11422 default packet size. The actual limit is further reduced\n\
11423 dependent on the target. Specify ``fixed'' to disable the\n\
11424 further restriction and ``limit'' to enable that restriction."),
11425 &remote_set_cmdlist
);
11426 add_cmd ("memory-write-packet-size", no_class
,
11427 show_memory_write_packet_size
,
11428 _("Show the maximum number of bytes per memory-write packet."),
11429 &remote_show_cmdlist
);
11430 add_cmd ("memory-read-packet-size", no_class
,
11431 show_memory_read_packet_size
,
11432 _("Show the maximum number of bytes per memory-read packet."),
11433 &remote_show_cmdlist
);
11435 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11436 &remote_hw_watchpoint_limit
, _("\
11437 Set the maximum number of target hardware watchpoints."), _("\
11438 Show the maximum number of target hardware watchpoints."), _("\
11439 Specify a negative limit for unlimited."),
11440 NULL
, NULL
, /* FIXME: i18n: The maximum
11441 number of target hardware
11442 watchpoints is %s. */
11443 &remote_set_cmdlist
, &remote_show_cmdlist
);
11444 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11445 &remote_hw_watchpoint_length_limit
, _("\
11446 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11447 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11448 Specify a negative limit for unlimited."),
11449 NULL
, NULL
, /* FIXME: i18n: The maximum
11450 length (in bytes) of a target
11451 hardware watchpoint is %s. */
11452 &remote_set_cmdlist
, &remote_show_cmdlist
);
11453 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11454 &remote_hw_breakpoint_limit
, _("\
11455 Set the maximum number of target hardware breakpoints."), _("\
11456 Show the maximum number of target hardware breakpoints."), _("\
11457 Specify a negative limit for unlimited."),
11458 NULL
, NULL
, /* FIXME: i18n: The maximum
11459 number of target hardware
11460 breakpoints is %s. */
11461 &remote_set_cmdlist
, &remote_show_cmdlist
);
11463 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
11464 &remote_address_size
, _("\
11465 Set the maximum size of the address (in bits) in a memory packet."), _("\
11466 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11468 NULL
, /* FIXME: i18n: */
11469 &setlist
, &showlist
);
11471 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11472 "X", "binary-download", 1);
11474 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11475 "vCont", "verbose-resume", 0);
11477 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11478 "QPassSignals", "pass-signals", 0);
11480 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11481 "QProgramSignals", "program-signals", 0);
11483 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11484 "qSymbol", "symbol-lookup", 0);
11486 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11487 "P", "set-register", 1);
11489 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11490 "p", "fetch-register", 1);
11492 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11493 "Z0", "software-breakpoint", 0);
11495 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11496 "Z1", "hardware-breakpoint", 0);
11498 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11499 "Z2", "write-watchpoint", 0);
11501 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11502 "Z3", "read-watchpoint", 0);
11504 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11505 "Z4", "access-watchpoint", 0);
11507 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11508 "qXfer:auxv:read", "read-aux-vector", 0);
11510 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11511 "qXfer:features:read", "target-features", 0);
11513 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11514 "qXfer:libraries:read", "library-info", 0);
11516 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11517 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11519 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11520 "qXfer:memory-map:read", "memory-map", 0);
11522 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11523 "qXfer:spu:read", "read-spu-object", 0);
11525 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11526 "qXfer:spu:write", "write-spu-object", 0);
11528 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11529 "qXfer:osdata:read", "osdata", 0);
11531 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11532 "qXfer:threads:read", "threads", 0);
11534 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11535 "qXfer:siginfo:read", "read-siginfo-object", 0);
11537 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11538 "qXfer:siginfo:write", "write-siginfo-object", 0);
11540 add_packet_config_cmd
11541 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11542 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11544 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11545 "qXfer:uib:read", "unwind-info-block", 0);
11547 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11548 "qGetTLSAddr", "get-thread-local-storage-address",
11551 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11552 "qGetTIBAddr", "get-thread-information-block-address",
11555 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11556 "bc", "reverse-continue", 0);
11558 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11559 "bs", "reverse-step", 0);
11561 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11562 "qSupported", "supported-packets", 0);
11564 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11565 "qSearch:memory", "search-memory", 0);
11567 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11568 "vFile:open", "hostio-open", 0);
11570 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11571 "vFile:pread", "hostio-pread", 0);
11573 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11574 "vFile:pwrite", "hostio-pwrite", 0);
11576 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11577 "vFile:close", "hostio-close", 0);
11579 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11580 "vFile:unlink", "hostio-unlink", 0);
11582 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11583 "vFile:readlink", "hostio-readlink", 0);
11585 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11586 "vAttach", "attach", 0);
11588 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11591 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11592 "QStartNoAckMode", "noack", 0);
11594 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11595 "vKill", "kill", 0);
11597 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11598 "qAttached", "query-attached", 0);
11600 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11601 "ConditionalTracepoints",
11602 "conditional-tracepoints", 0);
11604 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11605 "ConditionalBreakpoints",
11606 "conditional-breakpoints", 0);
11608 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11609 "BreakpointCommands",
11610 "breakpoint-commands", 0);
11612 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11613 "FastTracepoints", "fast-tracepoints", 0);
11615 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11616 "TracepointSource", "TracepointSource", 0);
11618 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11619 "QAllow", "allow", 0);
11621 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11622 "StaticTracepoints", "static-tracepoints", 0);
11624 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11625 "InstallInTrace", "install-in-trace", 0);
11627 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11628 "qXfer:statictrace:read", "read-sdata-object", 0);
11630 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11631 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11633 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11634 "QDisableRandomization", "disable-randomization", 0);
11636 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11637 "QAgent", "agent", 0);
11639 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11640 Z sub-packet has its own set and show commands, but users may
11641 have sets to this variable in their .gdbinit files (or in their
11643 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11644 &remote_Z_packet_detect
, _("\
11645 Set use of remote protocol `Z' packets"), _("\
11646 Show use of remote protocol `Z' packets "), _("\
11647 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11649 set_remote_protocol_Z_packet_cmd
,
11650 show_remote_protocol_Z_packet_cmd
,
11651 /* FIXME: i18n: Use of remote protocol
11652 `Z' packets is %s. */
11653 &remote_set_cmdlist
, &remote_show_cmdlist
);
11655 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11656 Manipulate files on the remote system\n\
11657 Transfer files to and from the remote target system."),
11658 &remote_cmdlist
, "remote ",
11659 0 /* allow-unknown */, &cmdlist
);
11661 add_cmd ("put", class_files
, remote_put_command
,
11662 _("Copy a local file to the remote system."),
11665 add_cmd ("get", class_files
, remote_get_command
,
11666 _("Copy a remote file to the local system."),
11669 add_cmd ("delete", class_files
, remote_delete_command
,
11670 _("Delete a remote file."),
11673 remote_exec_file
= xstrdup ("");
11674 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11675 &remote_exec_file
, _("\
11676 Set the remote pathname for \"run\""), _("\
11677 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11678 &remote_set_cmdlist
, &remote_show_cmdlist
);
11680 /* Eventually initialize fileio. See fileio.c */
11681 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11683 /* Take advantage of the fact that the LWP field is not used, to tag
11684 special ptids with it set to != 0. */
11685 magic_null_ptid
= ptid_build (42000, 1, -1);
11686 not_sent_ptid
= ptid_build (42000, 1, -2);
11687 any_thread_ptid
= ptid_build (42000, 1, 0);
11689 target_buf_size
= 2048;
11690 target_buf
= xmalloc (target_buf_size
);