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 unsigned int remote_address_size
;
839 /* Temporary to track who currently owns the terminal. See
840 remote_terminal_* for more details. */
842 static int remote_async_terminal_ours_p
;
844 /* The executable file to use for "run" on the remote side. */
846 static char *remote_exec_file
= "";
849 /* User configurable variables for the number of characters in a
850 memory read/write packet. MIN (rsa->remote_packet_size,
851 rsa->sizeof_g_packet) is the default. Some targets need smaller
852 values (fifo overruns, et.al.) and some users need larger values
853 (speed up transfers). The variables ``preferred_*'' (the user
854 request), ``current_*'' (what was actually set) and ``forced_*''
855 (Positive - a soft limit, negative - a hard limit). */
857 struct memory_packet_config
864 /* Compute the current size of a read/write packet. Since this makes
865 use of ``actual_register_packet_size'' the computation is dynamic. */
868 get_memory_packet_size (struct memory_packet_config
*config
)
870 struct remote_state
*rs
= get_remote_state ();
871 struct remote_arch_state
*rsa
= get_remote_arch_state ();
873 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
874 law?) that some hosts don't cope very well with large alloca()
875 calls. Eventually the alloca() code will be replaced by calls to
876 xmalloc() and make_cleanups() allowing this restriction to either
877 be lifted or removed. */
878 #ifndef MAX_REMOTE_PACKET_SIZE
879 #define MAX_REMOTE_PACKET_SIZE 16384
881 /* NOTE: 20 ensures we can write at least one byte. */
882 #ifndef MIN_REMOTE_PACKET_SIZE
883 #define MIN_REMOTE_PACKET_SIZE 20
888 if (config
->size
<= 0)
889 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
891 what_they_get
= config
->size
;
895 what_they_get
= get_remote_packet_size ();
896 /* Limit the packet to the size specified by the user. */
898 && what_they_get
> config
->size
)
899 what_they_get
= config
->size
;
901 /* Limit it to the size of the targets ``g'' response unless we have
902 permission from the stub to use a larger packet size. */
903 if (rs
->explicit_packet_size
== 0
904 && rsa
->actual_register_packet_size
> 0
905 && what_they_get
> rsa
->actual_register_packet_size
)
906 what_they_get
= rsa
->actual_register_packet_size
;
908 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
909 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
910 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
911 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
913 /* Make sure there is room in the global buffer for this packet
914 (including its trailing NUL byte). */
915 if (rs
->buf_size
< what_they_get
+ 1)
917 rs
->buf_size
= 2 * what_they_get
;
918 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
921 return what_they_get
;
924 /* Update the size of a read/write packet. If they user wants
925 something really big then do a sanity check. */
928 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
930 int fixed_p
= config
->fixed_p
;
931 long size
= config
->size
;
934 error (_("Argument required (integer, `fixed' or `limited')."));
935 else if (strcmp (args
, "hard") == 0
936 || strcmp (args
, "fixed") == 0)
938 else if (strcmp (args
, "soft") == 0
939 || strcmp (args
, "limit") == 0)
945 size
= strtoul (args
, &end
, 0);
947 error (_("Invalid %s (bad syntax)."), config
->name
);
949 /* Instead of explicitly capping the size of a packet to
950 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
951 instead allowed to set the size to something arbitrarily
953 if (size
> MAX_REMOTE_PACKET_SIZE
)
954 error (_("Invalid %s (too large)."), config
->name
);
958 if (fixed_p
&& !config
->fixed_p
)
960 if (! query (_("The target may not be able to correctly handle a %s\n"
961 "of %ld bytes. Change the packet size? "),
963 error (_("Packet size not changed."));
965 /* Update the config. */
966 config
->fixed_p
= fixed_p
;
971 show_memory_packet_size (struct memory_packet_config
*config
)
973 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
975 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
976 get_memory_packet_size (config
));
978 printf_filtered (_("Packets are limited to %ld bytes.\n"),
979 get_memory_packet_size (config
));
982 static struct memory_packet_config memory_write_packet_config
=
984 "memory-write-packet-size",
988 set_memory_write_packet_size (char *args
, int from_tty
)
990 set_memory_packet_size (args
, &memory_write_packet_config
);
994 show_memory_write_packet_size (char *args
, int from_tty
)
996 show_memory_packet_size (&memory_write_packet_config
);
1000 get_memory_write_packet_size (void)
1002 return get_memory_packet_size (&memory_write_packet_config
);
1005 static struct memory_packet_config memory_read_packet_config
=
1007 "memory-read-packet-size",
1011 set_memory_read_packet_size (char *args
, int from_tty
)
1013 set_memory_packet_size (args
, &memory_read_packet_config
);
1017 show_memory_read_packet_size (char *args
, int from_tty
)
1019 show_memory_packet_size (&memory_read_packet_config
);
1023 get_memory_read_packet_size (void)
1025 long size
= get_memory_packet_size (&memory_read_packet_config
);
1027 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1028 extra buffer size argument before the memory read size can be
1029 increased beyond this. */
1030 if (size
> get_remote_packet_size ())
1031 size
= get_remote_packet_size ();
1036 /* Generic configuration support for packets the stub optionally
1037 supports. Allows the user to specify the use of the packet as well
1038 as allowing GDB to auto-detect support in the remote stub. */
1042 PACKET_SUPPORT_UNKNOWN
= 0,
1047 struct packet_config
1051 enum auto_boolean detect
;
1052 enum packet_support support
;
1055 /* Analyze a packet's return value and update the packet config
1066 update_packet_config (struct packet_config
*config
)
1068 switch (config
->detect
)
1070 case AUTO_BOOLEAN_TRUE
:
1071 config
->support
= PACKET_ENABLE
;
1073 case AUTO_BOOLEAN_FALSE
:
1074 config
->support
= PACKET_DISABLE
;
1076 case AUTO_BOOLEAN_AUTO
:
1077 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1083 show_packet_config_cmd (struct packet_config
*config
)
1085 char *support
= "internal-error";
1087 switch (config
->support
)
1090 support
= "enabled";
1092 case PACKET_DISABLE
:
1093 support
= "disabled";
1095 case PACKET_SUPPORT_UNKNOWN
:
1096 support
= "unknown";
1099 switch (config
->detect
)
1101 case AUTO_BOOLEAN_AUTO
:
1102 printf_filtered (_("Support for the `%s' packet "
1103 "is auto-detected, currently %s.\n"),
1104 config
->name
, support
);
1106 case AUTO_BOOLEAN_TRUE
:
1107 case AUTO_BOOLEAN_FALSE
:
1108 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1109 config
->name
, support
);
1115 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1116 const char *title
, int legacy
)
1122 config
->name
= name
;
1123 config
->title
= title
;
1124 config
->detect
= AUTO_BOOLEAN_AUTO
;
1125 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1126 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1128 show_doc
= xstrprintf ("Show current use of remote "
1129 "protocol `%s' (%s) packet",
1131 /* set/show TITLE-packet {auto,on,off} */
1132 cmd_name
= xstrprintf ("%s-packet", title
);
1133 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1134 &config
->detect
, set_doc
,
1135 show_doc
, NULL
, /* help_doc */
1136 set_remote_protocol_packet_cmd
,
1137 show_remote_protocol_packet_cmd
,
1138 &remote_set_cmdlist
, &remote_show_cmdlist
);
1139 /* The command code copies the documentation strings. */
1142 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1147 legacy_name
= xstrprintf ("%s-packet", name
);
1148 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1149 &remote_set_cmdlist
);
1150 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1151 &remote_show_cmdlist
);
1155 static enum packet_result
1156 packet_check_result (const char *buf
)
1160 /* The stub recognized the packet request. Check that the
1161 operation succeeded. */
1163 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1165 /* "Enn" - definitly an error. */
1166 return PACKET_ERROR
;
1168 /* Always treat "E." as an error. This will be used for
1169 more verbose error messages, such as E.memtypes. */
1170 if (buf
[0] == 'E' && buf
[1] == '.')
1171 return PACKET_ERROR
;
1173 /* The packet may or may not be OK. Just assume it is. */
1177 /* The stub does not support the packet. */
1178 return PACKET_UNKNOWN
;
1181 static enum packet_result
1182 packet_ok (const char *buf
, struct packet_config
*config
)
1184 enum packet_result result
;
1186 result
= packet_check_result (buf
);
1191 /* The stub recognized the packet request. */
1192 switch (config
->support
)
1194 case PACKET_SUPPORT_UNKNOWN
:
1196 fprintf_unfiltered (gdb_stdlog
,
1197 "Packet %s (%s) is supported\n",
1198 config
->name
, config
->title
);
1199 config
->support
= PACKET_ENABLE
;
1201 case PACKET_DISABLE
:
1202 internal_error (__FILE__
, __LINE__
,
1203 _("packet_ok: attempt to use a disabled packet"));
1209 case PACKET_UNKNOWN
:
1210 /* The stub does not support the packet. */
1211 switch (config
->support
)
1214 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1215 /* If the stub previously indicated that the packet was
1216 supported then there is a protocol error.. */
1217 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1218 config
->name
, config
->title
);
1220 /* The user set it wrong. */
1221 error (_("Enabled packet %s (%s) not recognized by stub"),
1222 config
->name
, config
->title
);
1224 case PACKET_SUPPORT_UNKNOWN
:
1226 fprintf_unfiltered (gdb_stdlog
,
1227 "Packet %s (%s) is NOT supported\n",
1228 config
->name
, config
->title
);
1229 config
->support
= PACKET_DISABLE
;
1231 case PACKET_DISABLE
:
1253 PACKET_vFile_pwrite
,
1255 PACKET_vFile_unlink
,
1256 PACKET_vFile_readlink
,
1258 PACKET_qXfer_features
,
1259 PACKET_qXfer_libraries
,
1260 PACKET_qXfer_libraries_svr4
,
1261 PACKET_qXfer_memory_map
,
1262 PACKET_qXfer_spu_read
,
1263 PACKET_qXfer_spu_write
,
1264 PACKET_qXfer_osdata
,
1265 PACKET_qXfer_threads
,
1266 PACKET_qXfer_statictrace_read
,
1267 PACKET_qXfer_traceframe_info
,
1272 PACKET_QPassSignals
,
1273 PACKET_QProgramSignals
,
1274 PACKET_qSearch_memory
,
1277 PACKET_QStartNoAckMode
,
1279 PACKET_qXfer_siginfo_read
,
1280 PACKET_qXfer_siginfo_write
,
1282 PACKET_ConditionalTracepoints
,
1283 PACKET_ConditionalBreakpoints
,
1284 PACKET_BreakpointCommands
,
1285 PACKET_FastTracepoints
,
1286 PACKET_StaticTracepoints
,
1287 PACKET_InstallInTrace
,
1290 PACKET_TracepointSource
,
1293 PACKET_QDisableRandomization
,
1298 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1301 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1302 struct cmd_list_element
*c
)
1304 struct packet_config
*packet
;
1306 for (packet
= remote_protocol_packets
;
1307 packet
< &remote_protocol_packets
[PACKET_MAX
];
1310 if (&packet
->detect
== c
->var
)
1312 update_packet_config (packet
);
1316 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1321 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1322 struct cmd_list_element
*c
,
1325 struct packet_config
*packet
;
1327 for (packet
= remote_protocol_packets
;
1328 packet
< &remote_protocol_packets
[PACKET_MAX
];
1331 if (&packet
->detect
== c
->var
)
1333 show_packet_config_cmd (packet
);
1337 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1341 /* Should we try one of the 'Z' requests? */
1345 Z_PACKET_SOFTWARE_BP
,
1346 Z_PACKET_HARDWARE_BP
,
1353 /* For compatibility with older distributions. Provide a ``set remote
1354 Z-packet ...'' command that updates all the Z packet types. */
1356 static enum auto_boolean remote_Z_packet_detect
;
1359 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1360 struct cmd_list_element
*c
)
1364 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1366 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1367 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1372 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1373 struct cmd_list_element
*c
,
1378 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1380 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1384 /* Should we try the 'ThreadInfo' query packet?
1386 This variable (NOT available to the user: auto-detect only!)
1387 determines whether GDB will use the new, simpler "ThreadInfo"
1388 query or the older, more complex syntax for thread queries.
1389 This is an auto-detect variable (set to true at each connect,
1390 and set to false when the target fails to recognize it). */
1392 static int use_threadinfo_query
;
1393 static int use_threadextra_query
;
1395 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1396 static struct async_signal_handler
*sigint_remote_twice_token
;
1397 static struct async_signal_handler
*sigint_remote_token
;
1400 /* Asynchronous signal handle registered as event loop source for
1401 when we have pending events ready to be passed to the core. */
1403 static struct async_event_handler
*remote_async_inferior_event_token
;
1405 /* Asynchronous signal handle registered as event loop source for when
1406 the remote sent us a %Stop notification. The registered callback
1407 will do a vStopped sequence to pull the rest of the events out of
1408 the remote side into our event queue. */
1410 static struct async_event_handler
*remote_async_get_pending_events_token
;
1413 static ptid_t magic_null_ptid
;
1414 static ptid_t not_sent_ptid
;
1415 static ptid_t any_thread_ptid
;
1417 /* These are the threads which we last sent to the remote system. The
1418 TID member will be -1 for all or -2 for not sent yet. */
1420 static ptid_t general_thread
;
1421 static ptid_t continue_thread
;
1423 /* This is the traceframe which we last selected on the remote system.
1424 It will be -1 if no traceframe is selected. */
1425 static int remote_traceframe_number
= -1;
1427 /* Find out if the stub attached to PID (and hence GDB should offer to
1428 detach instead of killing it when bailing out). */
1431 remote_query_attached (int pid
)
1433 struct remote_state
*rs
= get_remote_state ();
1434 size_t size
= get_remote_packet_size ();
1436 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1439 if (remote_multi_process_p (rs
))
1440 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1442 xsnprintf (rs
->buf
, size
, "qAttached");
1445 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1447 switch (packet_ok (rs
->buf
,
1448 &remote_protocol_packets
[PACKET_qAttached
]))
1451 if (strcmp (rs
->buf
, "1") == 0)
1455 warning (_("Remote failure reply: %s"), rs
->buf
);
1457 case PACKET_UNKNOWN
:
1464 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1465 has been invented by GDB, instead of reported by the target. Since
1466 we can be connected to a remote system before before knowing about
1467 any inferior, mark the target with execution when we find the first
1468 inferior. If ATTACHED is 1, then we had just attached to this
1469 inferior. If it is 0, then we just created this inferior. If it
1470 is -1, then try querying the remote stub to find out if it had
1471 attached to the inferior or not. */
1473 static struct inferior
*
1474 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1476 struct inferior
*inf
;
1478 /* Check whether this process we're learning about is to be
1479 considered attached, or if is to be considered to have been
1480 spawned by the stub. */
1482 attached
= remote_query_attached (pid
);
1484 if (gdbarch_has_global_solist (target_gdbarch
))
1486 /* If the target shares code across all inferiors, then every
1487 attach adds a new inferior. */
1488 inf
= add_inferior (pid
);
1490 /* ... and every inferior is bound to the same program space.
1491 However, each inferior may still have its own address
1493 inf
->aspace
= maybe_new_address_space ();
1494 inf
->pspace
= current_program_space
;
1498 /* In the traditional debugging scenario, there's a 1-1 match
1499 between program/address spaces. We simply bind the inferior
1500 to the program space's address space. */
1501 inf
= current_inferior ();
1502 inferior_appeared (inf
, pid
);
1505 inf
->attach_flag
= attached
;
1506 inf
->fake_pid_p
= fake_pid_p
;
1511 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1512 according to RUNNING. */
1515 remote_add_thread (ptid_t ptid
, int running
)
1519 set_executing (ptid
, running
);
1520 set_running (ptid
, running
);
1523 /* Come here when we learn about a thread id from the remote target.
1524 It may be the first time we hear about such thread, so take the
1525 opportunity to add it to GDB's thread list. In case this is the
1526 first time we're noticing its corresponding inferior, add it to
1527 GDB's inferior list as well. */
1530 remote_notice_new_inferior (ptid_t currthread
, int running
)
1532 /* If this is a new thread, add it to GDB's thread list.
1533 If we leave it up to WFI to do this, bad things will happen. */
1535 if (in_thread_list (currthread
) && is_exited (currthread
))
1537 /* We're seeing an event on a thread id we knew had exited.
1538 This has to be a new thread reusing the old id. Add it. */
1539 remote_add_thread (currthread
, running
);
1543 if (!in_thread_list (currthread
))
1545 struct inferior
*inf
= NULL
;
1546 int pid
= ptid_get_pid (currthread
);
1548 if (ptid_is_pid (inferior_ptid
)
1549 && pid
== ptid_get_pid (inferior_ptid
))
1551 /* inferior_ptid has no thread member yet. This can happen
1552 with the vAttach -> remote_wait,"TAAthread:" path if the
1553 stub doesn't support qC. This is the first stop reported
1554 after an attach, so this is the main thread. Update the
1555 ptid in the thread list. */
1556 if (in_thread_list (pid_to_ptid (pid
)))
1557 thread_change_ptid (inferior_ptid
, currthread
);
1560 remote_add_thread (currthread
, running
);
1561 inferior_ptid
= currthread
;
1566 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1568 /* inferior_ptid is not set yet. This can happen with the
1569 vRun -> remote_wait,"TAAthread:" path if the stub
1570 doesn't support qC. This is the first stop reported
1571 after an attach, so this is the main thread. Update the
1572 ptid in the thread list. */
1573 thread_change_ptid (inferior_ptid
, currthread
);
1577 /* When connecting to a target remote, or to a target
1578 extended-remote which already was debugging an inferior, we
1579 may not know about it yet. Add it before adding its child
1580 thread, so notifications are emitted in a sensible order. */
1581 if (!in_inferior_list (ptid_get_pid (currthread
)))
1583 struct remote_state
*rs
= get_remote_state ();
1584 int fake_pid_p
= !remote_multi_process_p (rs
);
1586 inf
= remote_add_inferior (fake_pid_p
,
1587 ptid_get_pid (currthread
), -1);
1590 /* This is really a new thread. Add it. */
1591 remote_add_thread (currthread
, running
);
1593 /* If we found a new inferior, let the common code do whatever
1594 it needs to with it (e.g., read shared libraries, insert
1597 notice_new_inferior (currthread
, running
, 0);
1601 /* Return the private thread data, creating it if necessary. */
1603 static struct private_thread_info
*
1604 demand_private_info (ptid_t ptid
)
1606 struct thread_info
*info
= find_thread_ptid (ptid
);
1612 info
->private = xmalloc (sizeof (*(info
->private)));
1613 info
->private_dtor
= free_private_thread_info
;
1614 info
->private->core
= -1;
1615 info
->private->extra
= 0;
1618 return info
->private;
1621 /* Call this function as a result of
1622 1) A halt indication (T packet) containing a thread id
1623 2) A direct query of currthread
1624 3) Successful execution of set thread */
1627 record_currthread (ptid_t currthread
)
1629 general_thread
= currthread
;
1632 static char *last_pass_packet
;
1634 /* If 'QPassSignals' is supported, tell the remote stub what signals
1635 it can simply pass through to the inferior without reporting. */
1638 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1640 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1642 char *pass_packet
, *p
;
1645 gdb_assert (numsigs
< 256);
1646 for (i
= 0; i
< numsigs
; i
++)
1648 if (pass_signals
[i
])
1651 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1652 strcpy (pass_packet
, "QPassSignals:");
1653 p
= pass_packet
+ strlen (pass_packet
);
1654 for (i
= 0; i
< numsigs
; i
++)
1656 if (pass_signals
[i
])
1659 *p
++ = tohex (i
>> 4);
1660 *p
++ = tohex (i
& 15);
1669 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1671 struct remote_state
*rs
= get_remote_state ();
1672 char *buf
= rs
->buf
;
1674 putpkt (pass_packet
);
1675 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1676 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1677 if (last_pass_packet
)
1678 xfree (last_pass_packet
);
1679 last_pass_packet
= pass_packet
;
1682 xfree (pass_packet
);
1686 /* The last QProgramSignals packet sent to the target. We bypass
1687 sending a new program signals list down to the target if the new
1688 packet is exactly the same as the last we sent. IOW, we only let
1689 the target know about program signals list changes. */
1691 static char *last_program_signals_packet
;
1693 /* If 'QProgramSignals' is supported, tell the remote stub what
1694 signals it should pass through to the inferior when detaching. */
1697 remote_program_signals (int numsigs
, unsigned char *signals
)
1699 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1704 gdb_assert (numsigs
< 256);
1705 for (i
= 0; i
< numsigs
; i
++)
1710 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1711 strcpy (packet
, "QProgramSignals:");
1712 p
= packet
+ strlen (packet
);
1713 for (i
= 0; i
< numsigs
; i
++)
1715 if (signal_pass_state (i
))
1718 *p
++ = tohex (i
>> 4);
1719 *p
++ = tohex (i
& 15);
1728 if (!last_program_signals_packet
1729 || strcmp (last_program_signals_packet
, packet
) != 0)
1731 struct remote_state
*rs
= get_remote_state ();
1732 char *buf
= rs
->buf
;
1735 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1736 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1737 xfree (last_program_signals_packet
);
1738 last_program_signals_packet
= packet
;
1745 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1746 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1747 thread. If GEN is set, set the general thread, if not, then set
1748 the step/continue thread. */
1750 set_thread (struct ptid ptid
, int gen
)
1752 struct remote_state
*rs
= get_remote_state ();
1753 ptid_t state
= gen
? general_thread
: continue_thread
;
1754 char *buf
= rs
->buf
;
1755 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1757 if (ptid_equal (state
, ptid
))
1761 *buf
++ = gen
? 'g' : 'c';
1762 if (ptid_equal (ptid
, magic_null_ptid
))
1763 xsnprintf (buf
, endbuf
- buf
, "0");
1764 else if (ptid_equal (ptid
, any_thread_ptid
))
1765 xsnprintf (buf
, endbuf
- buf
, "0");
1766 else if (ptid_equal (ptid
, minus_one_ptid
))
1767 xsnprintf (buf
, endbuf
- buf
, "-1");
1769 write_ptid (buf
, endbuf
, ptid
);
1771 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1773 general_thread
= ptid
;
1775 continue_thread
= ptid
;
1779 set_general_thread (struct ptid ptid
)
1781 set_thread (ptid
, 1);
1785 set_continue_thread (struct ptid ptid
)
1787 set_thread (ptid
, 0);
1790 /* Change the remote current process. Which thread within the process
1791 ends up selected isn't important, as long as it is the same process
1792 as what INFERIOR_PTID points to.
1794 This comes from that fact that there is no explicit notion of
1795 "selected process" in the protocol. The selected process for
1796 general operations is the process the selected general thread
1800 set_general_process (void)
1802 struct remote_state
*rs
= get_remote_state ();
1804 /* If the remote can't handle multiple processes, don't bother. */
1805 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1808 /* We only need to change the remote current thread if it's pointing
1809 at some other process. */
1810 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1811 set_general_thread (inferior_ptid
);
1815 /* Return nonzero if the thread PTID is still alive on the remote
1819 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1821 struct remote_state
*rs
= get_remote_state ();
1824 if (ptid_equal (ptid
, magic_null_ptid
))
1825 /* The main thread is always alive. */
1828 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1829 /* The main thread is always alive. This can happen after a
1830 vAttach, if the remote side doesn't support
1835 endp
= rs
->buf
+ get_remote_packet_size ();
1838 write_ptid (p
, endp
, ptid
);
1841 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1842 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1845 /* About these extended threadlist and threadinfo packets. They are
1846 variable length packets but, the fields within them are often fixed
1847 length. They are redundent enough to send over UDP as is the
1848 remote protocol in general. There is a matching unit test module
1851 #define OPAQUETHREADBYTES 8
1853 /* a 64 bit opaque identifier */
1854 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1856 /* WARNING: This threadref data structure comes from the remote O.S.,
1857 libstub protocol encoding, and remote.c. It is not particularly
1860 /* Right now, the internal structure is int. We want it to be bigger.
1861 Plan to fix this. */
1863 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1865 /* gdb_ext_thread_info is an internal GDB data structure which is
1866 equivalent to the reply of the remote threadinfo packet. */
1868 struct gdb_ext_thread_info
1870 threadref threadid
; /* External form of thread reference. */
1871 int active
; /* Has state interesting to GDB?
1873 char display
[256]; /* Brief state display, name,
1874 blocked/suspended. */
1875 char shortname
[32]; /* To be used to name threads. */
1876 char more_display
[256]; /* Long info, statistics, queue depth,
1880 /* The volume of remote transfers can be limited by submitting
1881 a mask containing bits specifying the desired information.
1882 Use a union of these values as the 'selection' parameter to
1883 get_thread_info. FIXME: Make these TAG names more thread specific. */
1885 #define TAG_THREADID 1
1886 #define TAG_EXISTS 2
1887 #define TAG_DISPLAY 4
1888 #define TAG_THREADNAME 8
1889 #define TAG_MOREDISPLAY 16
1891 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1893 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1895 static char *unpack_nibble (char *buf
, int *val
);
1897 static char *pack_nibble (char *buf
, int nibble
);
1899 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1901 static char *unpack_byte (char *buf
, int *value
);
1903 static char *pack_int (char *buf
, int value
);
1905 static char *unpack_int (char *buf
, int *value
);
1907 static char *unpack_string (char *src
, char *dest
, int length
);
1909 static char *pack_threadid (char *pkt
, threadref
*id
);
1911 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1913 void int_to_threadref (threadref
*id
, int value
);
1915 static int threadref_to_int (threadref
*ref
);
1917 static void copy_threadref (threadref
*dest
, threadref
*src
);
1919 static int threadmatch (threadref
*dest
, threadref
*src
);
1921 static char *pack_threadinfo_request (char *pkt
, int mode
,
1924 static int remote_unpack_thread_info_response (char *pkt
,
1925 threadref
*expectedref
,
1926 struct gdb_ext_thread_info
1930 static int remote_get_threadinfo (threadref
*threadid
,
1931 int fieldset
, /*TAG mask */
1932 struct gdb_ext_thread_info
*info
);
1934 static char *pack_threadlist_request (char *pkt
, int startflag
,
1936 threadref
*nextthread
);
1938 static int parse_threadlist_response (char *pkt
,
1940 threadref
*original_echo
,
1941 threadref
*resultlist
,
1944 static int remote_get_threadlist (int startflag
,
1945 threadref
*nextthread
,
1949 threadref
*threadlist
);
1951 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1953 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1954 void *context
, int looplimit
);
1956 static int remote_newthread_step (threadref
*ref
, void *context
);
1959 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1960 buffer we're allowed to write to. Returns
1961 BUF+CHARACTERS_WRITTEN. */
1964 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1967 struct remote_state
*rs
= get_remote_state ();
1969 if (remote_multi_process_p (rs
))
1971 pid
= ptid_get_pid (ptid
);
1973 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1975 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1977 tid
= ptid_get_tid (ptid
);
1979 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1981 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1986 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1987 passed the last parsed char. Returns null_ptid on error. */
1990 read_ptid (char *buf
, char **obuf
)
1994 ULONGEST pid
= 0, tid
= 0;
1998 /* Multi-process ptid. */
1999 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2001 error (_("invalid remote ptid: %s"), p
);
2004 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2007 return ptid_build (pid
, 0, tid
);
2010 /* No multi-process. Just a tid. */
2011 pp
= unpack_varlen_hex (p
, &tid
);
2013 /* Since the stub is not sending a process id, then default to
2014 what's in inferior_ptid, unless it's null at this point. If so,
2015 then since there's no way to know the pid of the reported
2016 threads, use the magic number. */
2017 if (ptid_equal (inferior_ptid
, null_ptid
))
2018 pid
= ptid_get_pid (magic_null_ptid
);
2020 pid
= ptid_get_pid (inferior_ptid
);
2024 return ptid_build (pid
, 0, tid
);
2027 /* Encode 64 bits in 16 chars of hex. */
2029 static const char hexchars
[] = "0123456789abcdef";
2032 ishex (int ch
, int *val
)
2034 if ((ch
>= 'a') && (ch
<= 'f'))
2036 *val
= ch
- 'a' + 10;
2039 if ((ch
>= 'A') && (ch
<= 'F'))
2041 *val
= ch
- 'A' + 10;
2044 if ((ch
>= '0') && (ch
<= '9'))
2055 if (ch
>= 'a' && ch
<= 'f')
2056 return ch
- 'a' + 10;
2057 if (ch
>= '0' && ch
<= '9')
2059 if (ch
>= 'A' && ch
<= 'F')
2060 return ch
- 'A' + 10;
2065 stub_unpack_int (char *buff
, int fieldlength
)
2072 nibble
= stubhex (*buff
++);
2076 retval
= retval
<< 4;
2082 unpack_varlen_hex (char *buff
, /* packet to parse */
2086 ULONGEST retval
= 0;
2088 while (ishex (*buff
, &nibble
))
2091 retval
= retval
<< 4;
2092 retval
|= nibble
& 0x0f;
2099 unpack_nibble (char *buf
, int *val
)
2101 *val
= fromhex (*buf
++);
2106 pack_nibble (char *buf
, int nibble
)
2108 *buf
++ = hexchars
[(nibble
& 0x0f)];
2113 pack_hex_byte (char *pkt
, int byte
)
2115 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2116 *pkt
++ = hexchars
[(byte
& 0xf)];
2121 unpack_byte (char *buf
, int *value
)
2123 *value
= stub_unpack_int (buf
, 2);
2128 pack_int (char *buf
, int value
)
2130 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2131 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2132 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2133 buf
= pack_hex_byte (buf
, (value
& 0xff));
2138 unpack_int (char *buf
, int *value
)
2140 *value
= stub_unpack_int (buf
, 8);
2144 #if 0 /* Currently unused, uncomment when needed. */
2145 static char *pack_string (char *pkt
, char *string
);
2148 pack_string (char *pkt
, char *string
)
2153 len
= strlen (string
);
2155 len
= 200; /* Bigger than most GDB packets, junk??? */
2156 pkt
= pack_hex_byte (pkt
, len
);
2160 if ((ch
== '\0') || (ch
== '#'))
2161 ch
= '*'; /* Protect encapsulation. */
2166 #endif /* 0 (unused) */
2169 unpack_string (char *src
, char *dest
, int length
)
2178 pack_threadid (char *pkt
, threadref
*id
)
2181 unsigned char *altid
;
2183 altid
= (unsigned char *) id
;
2184 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2186 pkt
= pack_hex_byte (pkt
, *altid
++);
2192 unpack_threadid (char *inbuf
, threadref
*id
)
2195 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2198 altref
= (char *) id
;
2200 while (inbuf
< limit
)
2202 x
= stubhex (*inbuf
++);
2203 y
= stubhex (*inbuf
++);
2204 *altref
++ = (x
<< 4) | y
;
2209 /* Externally, threadrefs are 64 bits but internally, they are still
2210 ints. This is due to a mismatch of specifications. We would like
2211 to use 64bit thread references internally. This is an adapter
2215 int_to_threadref (threadref
*id
, int value
)
2217 unsigned char *scan
;
2219 scan
= (unsigned char *) id
;
2225 *scan
++ = (value
>> 24) & 0xff;
2226 *scan
++ = (value
>> 16) & 0xff;
2227 *scan
++ = (value
>> 8) & 0xff;
2228 *scan
++ = (value
& 0xff);
2232 threadref_to_int (threadref
*ref
)
2235 unsigned char *scan
;
2241 value
= (value
<< 8) | ((*scan
++) & 0xff);
2246 copy_threadref (threadref
*dest
, threadref
*src
)
2249 unsigned char *csrc
, *cdest
;
2251 csrc
= (unsigned char *) src
;
2252 cdest
= (unsigned char *) dest
;
2259 threadmatch (threadref
*dest
, threadref
*src
)
2261 /* Things are broken right now, so just assume we got a match. */
2263 unsigned char *srcp
, *destp
;
2265 srcp
= (char *) src
;
2266 destp
= (char *) dest
;
2270 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2277 threadid:1, # always request threadid
2284 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2287 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2289 *pkt
++ = 'q'; /* Info Query */
2290 *pkt
++ = 'P'; /* process or thread info */
2291 pkt
= pack_int (pkt
, mode
); /* mode */
2292 pkt
= pack_threadid (pkt
, id
); /* threadid */
2293 *pkt
= '\0'; /* terminate */
2297 /* These values tag the fields in a thread info response packet. */
2298 /* Tagging the fields allows us to request specific fields and to
2299 add more fields as time goes by. */
2301 #define TAG_THREADID 1 /* Echo the thread identifier. */
2302 #define TAG_EXISTS 2 /* Is this process defined enough to
2303 fetch registers and its stack? */
2304 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2305 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2306 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2310 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2311 struct gdb_ext_thread_info
*info
)
2313 struct remote_state
*rs
= get_remote_state ();
2317 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2320 /* info->threadid = 0; FIXME: implement zero_threadref. */
2322 info
->display
[0] = '\0';
2323 info
->shortname
[0] = '\0';
2324 info
->more_display
[0] = '\0';
2326 /* Assume the characters indicating the packet type have been
2328 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2329 pkt
= unpack_threadid (pkt
, &ref
);
2332 warning (_("Incomplete response to threadinfo request."));
2333 if (!threadmatch (&ref
, expectedref
))
2334 { /* This is an answer to a different request. */
2335 warning (_("ERROR RMT Thread info mismatch."));
2338 copy_threadref (&info
->threadid
, &ref
);
2340 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2342 /* Packets are terminated with nulls. */
2343 while ((pkt
< limit
) && mask
&& *pkt
)
2345 pkt
= unpack_int (pkt
, &tag
); /* tag */
2346 pkt
= unpack_byte (pkt
, &length
); /* length */
2347 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2349 warning (_("ERROR RMT: threadinfo tag mismatch."));
2353 if (tag
== TAG_THREADID
)
2357 warning (_("ERROR RMT: length of threadid is not 16."));
2361 pkt
= unpack_threadid (pkt
, &ref
);
2362 mask
= mask
& ~TAG_THREADID
;
2365 if (tag
== TAG_EXISTS
)
2367 info
->active
= stub_unpack_int (pkt
, length
);
2369 mask
= mask
& ~(TAG_EXISTS
);
2372 warning (_("ERROR RMT: 'exists' length too long."));
2378 if (tag
== TAG_THREADNAME
)
2380 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2381 mask
= mask
& ~TAG_THREADNAME
;
2384 if (tag
== TAG_DISPLAY
)
2386 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2387 mask
= mask
& ~TAG_DISPLAY
;
2390 if (tag
== TAG_MOREDISPLAY
)
2392 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2393 mask
= mask
& ~TAG_MOREDISPLAY
;
2396 warning (_("ERROR RMT: unknown thread info tag."));
2397 break; /* Not a tag we know about. */
2403 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2404 struct gdb_ext_thread_info
*info
)
2406 struct remote_state
*rs
= get_remote_state ();
2409 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2411 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2413 if (rs
->buf
[0] == '\0')
2416 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2421 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2424 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2425 threadref
*nextthread
)
2427 *pkt
++ = 'q'; /* info query packet */
2428 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2429 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2430 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2431 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2436 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2439 parse_threadlist_response (char *pkt
, int result_limit
,
2440 threadref
*original_echo
, threadref
*resultlist
,
2443 struct remote_state
*rs
= get_remote_state ();
2445 int count
, resultcount
, done
;
2448 /* Assume the 'q' and 'M chars have been stripped. */
2449 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2450 /* done parse past here */
2451 pkt
= unpack_byte (pkt
, &count
); /* count field */
2452 pkt
= unpack_nibble (pkt
, &done
);
2453 /* The first threadid is the argument threadid. */
2454 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2455 while ((count
-- > 0) && (pkt
< limit
))
2457 pkt
= unpack_threadid (pkt
, resultlist
++);
2458 if (resultcount
++ >= result_limit
)
2467 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2468 int *done
, int *result_count
, threadref
*threadlist
)
2470 struct remote_state
*rs
= get_remote_state ();
2471 static threadref echo_nextthread
;
2474 /* Trancate result limit to be smaller than the packet size. */
2475 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2476 >= get_remote_packet_size ())
2477 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2479 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2481 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2483 if (*rs
->buf
== '\0')
2487 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2490 if (!threadmatch (&echo_nextthread
, nextthread
))
2492 /* FIXME: This is a good reason to drop the packet. */
2493 /* Possably, there is a duplicate response. */
2495 retransmit immediatly - race conditions
2496 retransmit after timeout - yes
2498 wait for packet, then exit
2500 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2501 return 0; /* I choose simply exiting. */
2503 if (*result_count
<= 0)
2507 warning (_("RMT ERROR : failed to get remote thread list."));
2510 return result
; /* break; */
2512 if (*result_count
> result_limit
)
2515 warning (_("RMT ERROR: threadlist response longer than requested."));
2521 /* This is the interface between remote and threads, remotes upper
2524 /* remote_find_new_threads retrieves the thread list and for each
2525 thread in the list, looks up the thread in GDB's internal list,
2526 adding the thread if it does not already exist. This involves
2527 getting partial thread lists from the remote target so, polling the
2528 quit_flag is required. */
2531 /* About this many threadisds fit in a packet. */
2533 #define MAXTHREADLISTRESULTS 32
2536 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2539 int done
, i
, result_count
;
2543 static threadref nextthread
;
2544 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2549 if (loopcount
++ > looplimit
)
2552 warning (_("Remote fetch threadlist -infinite loop-."));
2555 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2556 &done
, &result_count
, resultthreadlist
))
2561 /* Clear for later iterations. */
2563 /* Setup to resume next batch of thread references, set nextthread. */
2564 if (result_count
>= 1)
2565 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2567 while (result_count
--)
2568 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2575 remote_newthread_step (threadref
*ref
, void *context
)
2577 int pid
= ptid_get_pid (inferior_ptid
);
2578 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2580 if (!in_thread_list (ptid
))
2582 return 1; /* continue iterator */
2585 #define CRAZY_MAX_THREADS 1000
2588 remote_current_thread (ptid_t oldpid
)
2590 struct remote_state
*rs
= get_remote_state ();
2593 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2594 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2595 return read_ptid (&rs
->buf
[2], NULL
);
2600 /* Find new threads for info threads command.
2601 * Original version, using John Metzler's thread protocol.
2605 remote_find_new_threads (void)
2607 remote_threadlist_iterator (remote_newthread_step
, 0,
2611 #if defined(HAVE_LIBEXPAT)
2613 typedef struct thread_item
2619 DEF_VEC_O(thread_item_t
);
2621 struct threads_parsing_context
2623 VEC (thread_item_t
) *items
;
2627 start_thread (struct gdb_xml_parser
*parser
,
2628 const struct gdb_xml_element
*element
,
2629 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2631 struct threads_parsing_context
*data
= user_data
;
2633 struct thread_item item
;
2635 struct gdb_xml_value
*attr
;
2637 id
= xml_find_attribute (attributes
, "id")->value
;
2638 item
.ptid
= read_ptid (id
, NULL
);
2640 attr
= xml_find_attribute (attributes
, "core");
2642 item
.core
= *(ULONGEST
*) attr
->value
;
2648 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2652 end_thread (struct gdb_xml_parser
*parser
,
2653 const struct gdb_xml_element
*element
,
2654 void *user_data
, const char *body_text
)
2656 struct threads_parsing_context
*data
= user_data
;
2658 if (body_text
&& *body_text
)
2659 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2662 const struct gdb_xml_attribute thread_attributes
[] = {
2663 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2664 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2665 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2668 const struct gdb_xml_element thread_children
[] = {
2669 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2672 const struct gdb_xml_element threads_children
[] = {
2673 { "thread", thread_attributes
, thread_children
,
2674 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2675 start_thread
, end_thread
},
2676 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2679 const struct gdb_xml_element threads_elements
[] = {
2680 { "threads", NULL
, threads_children
,
2681 GDB_XML_EF_NONE
, NULL
, NULL
},
2682 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2685 /* Discard the contents of the constructed thread info context. */
2688 clear_threads_parsing_context (void *p
)
2690 struct threads_parsing_context
*context
= p
;
2692 struct thread_item
*item
;
2694 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2695 xfree (item
->extra
);
2697 VEC_free (thread_item_t
, context
->items
);
2703 * Find all threads for info threads command.
2704 * Uses new thread protocol contributed by Cisco.
2705 * Falls back and attempts to use the older method (above)
2706 * if the target doesn't respond to the new method.
2710 remote_threads_info (struct target_ops
*ops
)
2712 struct remote_state
*rs
= get_remote_state ();
2716 if (remote_desc
== 0) /* paranoia */
2717 error (_("Command can only be used when connected to the remote target."));
2719 #if defined(HAVE_LIBEXPAT)
2720 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2722 char *xml
= target_read_stralloc (¤t_target
,
2723 TARGET_OBJECT_THREADS
, NULL
);
2725 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2729 struct threads_parsing_context context
;
2731 context
.items
= NULL
;
2732 make_cleanup (clear_threads_parsing_context
, &context
);
2734 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2735 threads_elements
, xml
, &context
) == 0)
2738 struct thread_item
*item
;
2741 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2744 if (!ptid_equal (item
->ptid
, null_ptid
))
2746 struct private_thread_info
*info
;
2747 /* In non-stop mode, we assume new found threads
2748 are running until proven otherwise with a
2749 stop reply. In all-stop, we can only get
2750 here if all threads are stopped. */
2751 int running
= non_stop
? 1 : 0;
2753 remote_notice_new_inferior (item
->ptid
, running
);
2755 info
= demand_private_info (item
->ptid
);
2756 info
->core
= item
->core
;
2757 info
->extra
= item
->extra
;
2764 do_cleanups (back_to
);
2769 if (use_threadinfo_query
)
2771 putpkt ("qfThreadInfo");
2772 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2774 if (bufp
[0] != '\0') /* q packet recognized */
2776 while (*bufp
++ == 'm') /* reply contains one or more TID */
2780 new_thread
= read_ptid (bufp
, &bufp
);
2781 if (!ptid_equal (new_thread
, null_ptid
))
2783 /* In non-stop mode, we assume new found threads
2784 are running until proven otherwise with a
2785 stop reply. In all-stop, we can only get
2786 here if all threads are stopped. */
2787 int running
= non_stop
? 1 : 0;
2789 remote_notice_new_inferior (new_thread
, running
);
2792 while (*bufp
++ == ','); /* comma-separated list */
2793 putpkt ("qsThreadInfo");
2794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2801 /* Only qfThreadInfo is supported in non-stop mode. */
2805 /* Else fall back to old method based on jmetzler protocol. */
2806 use_threadinfo_query
= 0;
2807 remote_find_new_threads ();
2812 * Collect a descriptive string about the given thread.
2813 * The target may say anything it wants to about the thread
2814 * (typically info about its blocked / runnable state, name, etc.).
2815 * This string will appear in the info threads display.
2817 * Optional: targets are not required to implement this function.
2821 remote_threads_extra_info (struct thread_info
*tp
)
2823 struct remote_state
*rs
= get_remote_state ();
2827 struct gdb_ext_thread_info threadinfo
;
2828 static char display_buf
[100]; /* arbitrary... */
2829 int n
= 0; /* position in display_buf */
2831 if (remote_desc
== 0) /* paranoia */
2832 internal_error (__FILE__
, __LINE__
,
2833 _("remote_threads_extra_info"));
2835 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2836 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2837 /* This is the main thread which was added by GDB. The remote
2838 server doesn't know about it. */
2841 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2843 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2845 if (info
&& info
->private)
2846 return info
->private->extra
;
2851 if (use_threadextra_query
)
2854 char *endb
= rs
->buf
+ get_remote_packet_size ();
2856 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2858 write_ptid (b
, endb
, tp
->ptid
);
2861 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2862 if (rs
->buf
[0] != 0)
2864 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2865 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2866 display_buf
[result
] = '\0';
2871 /* If the above query fails, fall back to the old method. */
2872 use_threadextra_query
= 0;
2873 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2874 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2875 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2876 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2877 if (threadinfo
.active
)
2879 if (*threadinfo
.shortname
)
2880 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2881 " Name: %s,", threadinfo
.shortname
);
2882 if (*threadinfo
.display
)
2883 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2884 " State: %s,", threadinfo
.display
);
2885 if (*threadinfo
.more_display
)
2886 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2887 " Priority: %s", threadinfo
.more_display
);
2891 /* For purely cosmetic reasons, clear up trailing commas. */
2892 if (',' == display_buf
[n
-1])
2893 display_buf
[n
-1] = ' ';
2902 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2903 struct static_tracepoint_marker
*marker
)
2905 struct remote_state
*rs
= get_remote_state ();
2908 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2910 p
+= hexnumstr (p
, addr
);
2912 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2916 error (_("Remote failure reply: %s"), p
);
2920 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2927 static VEC(static_tracepoint_marker_p
) *
2928 remote_static_tracepoint_markers_by_strid (const char *strid
)
2930 struct remote_state
*rs
= get_remote_state ();
2931 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2932 struct static_tracepoint_marker
*marker
= NULL
;
2933 struct cleanup
*old_chain
;
2936 /* Ask for a first packet of static tracepoint marker
2939 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2942 error (_("Remote failure reply: %s"), p
);
2944 old_chain
= make_cleanup (free_current_marker
, &marker
);
2949 marker
= XCNEW (struct static_tracepoint_marker
);
2953 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2955 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2957 VEC_safe_push (static_tracepoint_marker_p
,
2963 release_static_tracepoint_marker (marker
);
2964 memset (marker
, 0, sizeof (*marker
));
2967 while (*p
++ == ','); /* comma-separated list */
2968 /* Ask for another packet of static tracepoint definition. */
2970 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2974 do_cleanups (old_chain
);
2979 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2982 remote_get_ada_task_ptid (long lwp
, long thread
)
2984 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2988 /* Restart the remote side; this is an extended protocol operation. */
2991 extended_remote_restart (void)
2993 struct remote_state
*rs
= get_remote_state ();
2995 /* Send the restart command; for reasons I don't understand the
2996 remote side really expects a number after the "R". */
2997 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3000 remote_fileio_reset ();
3003 /* Clean up connection to a remote debugger. */
3006 remote_close (int quitting
)
3008 if (remote_desc
== NULL
)
3009 return; /* already closed */
3011 /* Make sure we leave stdin registered in the event loop, and we
3012 don't leave the async SIGINT signal handler installed. */
3013 remote_terminal_ours ();
3015 serial_close (remote_desc
);
3018 /* We don't have a connection to the remote stub anymore. Get rid
3019 of all the inferiors and their threads we were controlling.
3020 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3021 will be unable to find the thread corresponding to (pid, 0, 0). */
3022 inferior_ptid
= null_ptid
;
3023 discard_all_inferiors ();
3025 /* 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. */
3276 if (interrupt_on_connect
)
3277 send_interrupt_sequence ();
3279 /* Ack any packet which the remote side has already sent. */
3280 serial_write (remote_desc
, "+", 1);
3282 /* Signal other parts that we're going through the initial setup,
3283 and so things may not be stable yet. */
3284 rs
->starting_up
= 1;
3286 /* The first packet we send to the target is the optional "supported
3287 packets" request. If the target can answer this, it will tell us
3288 which later probes to skip. */
3289 remote_query_supported ();
3291 /* If the stub wants to get a QAllow, compose one and send it. */
3292 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3293 remote_set_permissions ();
3295 /* Next, we possibly activate noack mode.
3297 If the QStartNoAckMode packet configuration is set to AUTO,
3298 enable noack mode if the stub reported a wish for it with
3301 If set to TRUE, then enable noack mode even if the stub didn't
3302 report it in qSupported. If the stub doesn't reply OK, the
3303 session ends with an error.
3305 If FALSE, then don't activate noack mode, regardless of what the
3306 stub claimed should be the default with qSupported. */
3308 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3310 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3311 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3312 && noack_config
->support
== PACKET_ENABLE
))
3314 putpkt ("QStartNoAckMode");
3315 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3316 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3322 /* Tell the remote that we are using the extended protocol. */
3324 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3327 /* Let the target know which signals it is allowed to pass down to
3329 update_signals_program_target ();
3331 /* Next, if the target can specify a description, read it. We do
3332 this before anything involving memory or registers. */
3333 target_find_description ();
3335 /* Next, now that we know something about the target, update the
3336 address spaces in the program spaces. */
3337 update_address_spaces ();
3339 /* On OSs where the list of libraries is global to all
3340 processes, we fetch them early. */
3341 if (gdbarch_has_global_solist (target_gdbarch
))
3342 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3346 if (!rs
->non_stop_aware
)
3347 error (_("Non-stop mode requested, but remote "
3348 "does not support non-stop"));
3350 putpkt ("QNonStop:1");
3351 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3353 if (strcmp (rs
->buf
, "OK") != 0)
3354 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3356 /* Find about threads and processes the stub is already
3357 controlling. We default to adding them in the running state.
3358 The '?' query below will then tell us about which threads are
3360 remote_threads_info (target
);
3362 else if (rs
->non_stop_aware
)
3364 /* Don't assume that the stub can operate in all-stop mode.
3365 Request it explicitely. */
3366 putpkt ("QNonStop:0");
3367 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3369 if (strcmp (rs
->buf
, "OK") != 0)
3370 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3373 /* Check whether the target is running now. */
3375 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3381 struct inferior
*inf
;
3383 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3386 error (_("The target is not running (try extended-remote?)"));
3388 /* We're connected, but not running. Drop out before we
3389 call start_remote. */
3390 rs
->starting_up
= 0;
3395 /* Save the reply for later. */
3396 wait_status
= alloca (strlen (rs
->buf
) + 1);
3397 strcpy (wait_status
, rs
->buf
);
3400 /* Let the stub know that we want it to return the thread. */
3401 set_continue_thread (minus_one_ptid
);
3403 add_current_inferior_and_thread ();
3405 /* init_wait_for_inferior should be called before get_offsets in order
3406 to manage `inserted' flag in bp loc in a correct state.
3407 breakpoint_init_inferior, called from init_wait_for_inferior, set
3408 `inserted' flag to 0, while before breakpoint_re_set, called from
3409 start_remote, set `inserted' flag to 1. In the initialization of
3410 inferior, breakpoint_init_inferior should be called first, and then
3411 breakpoint_re_set can be called. If this order is broken, state of
3412 `inserted' flag is wrong, and cause some problems on breakpoint
3414 init_wait_for_inferior ();
3416 get_offsets (); /* Get text, data & bss offsets. */
3418 /* If we could not find a description using qXfer, and we know
3419 how to do it some other way, try again. This is not
3420 supported for non-stop; it could be, but it is tricky if
3421 there are no stopped threads when we connect. */
3422 if (remote_read_description_p (target
)
3423 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3425 target_clear_description ();
3426 target_find_description ();
3429 /* Use the previously fetched status. */
3430 gdb_assert (wait_status
!= NULL
);
3431 strcpy (rs
->buf
, wait_status
);
3432 rs
->cached_wait_status
= 1;
3435 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3439 /* Clear WFI global state. Do this before finding about new
3440 threads and inferiors, and setting the current inferior.
3441 Otherwise we would clear the proceed status of the current
3442 inferior when we want its stop_soon state to be preserved
3443 (see notice_new_inferior). */
3444 init_wait_for_inferior ();
3446 /* In non-stop, we will either get an "OK", meaning that there
3447 are no stopped threads at this time; or, a regular stop
3448 reply. In the latter case, there may be more than one thread
3449 stopped --- we pull them all out using the vStopped
3451 if (strcmp (rs
->buf
, "OK") != 0)
3453 struct stop_reply
*stop_reply
;
3454 struct cleanup
*old_chain
;
3456 stop_reply
= stop_reply_xmalloc ();
3457 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3459 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3460 discard_cleanups (old_chain
);
3462 /* get_pending_stop_replies acks this one, and gets the rest
3464 pending_stop_reply
= stop_reply
;
3465 remote_get_pending_stop_replies ();
3467 /* Make sure that threads that were stopped remain
3469 iterate_over_threads (set_stop_requested_callback
, NULL
);
3472 if (target_can_async_p ())
3473 target_async (inferior_event_handler
, 0);
3475 if (thread_count () == 0)
3478 error (_("The target is not running (try extended-remote?)"));
3480 /* We're connected, but not running. Drop out before we
3481 call start_remote. */
3482 rs
->starting_up
= 0;
3486 /* Let the stub know that we want it to return the thread. */
3488 /* Force the stub to choose a thread. */
3489 set_general_thread (null_ptid
);
3492 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3493 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3494 error (_("remote didn't report the current thread in non-stop mode"));
3496 get_offsets (); /* Get text, data & bss offsets. */
3498 /* In non-stop mode, any cached wait status will be stored in
3499 the stop reply queue. */
3500 gdb_assert (wait_status
== NULL
);
3502 /* Report all signals during attach/startup. */
3503 remote_pass_signals (0, NULL
);
3506 /* If we connected to a live target, do some additional setup. */
3507 if (target_has_execution
)
3509 if (exec_bfd
) /* No use without an exec file. */
3510 remote_check_symbols (symfile_objfile
);
3513 /* Possibly the target has been engaged in a trace run started
3514 previously; find out where things are at. */
3515 if (remote_get_trace_status (current_trace_status ()) != -1)
3517 struct uploaded_tp
*uploaded_tps
= NULL
;
3518 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3520 if (current_trace_status ()->running
)
3521 printf_filtered (_("Trace is already running on the target.\n"));
3523 /* Get trace state variables first, they may be checked when
3524 parsing uploaded commands. */
3526 remote_upload_trace_state_variables (&uploaded_tsvs
);
3528 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3530 remote_upload_tracepoints (&uploaded_tps
);
3532 merge_uploaded_tracepoints (&uploaded_tps
);
3535 /* The thread and inferior lists are now synchronized with the
3536 target, our symbols have been relocated, and we're merged the
3537 target's tracepoints with ours. We're done with basic start
3539 rs
->starting_up
= 0;
3541 /* If breakpoints are global, insert them now. */
3542 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3543 && breakpoints_always_inserted_mode ())
3544 insert_breakpoints ();
3547 /* Open a connection to a remote debugger.
3548 NAME is the filename used for communication. */
3551 remote_open (char *name
, int from_tty
)
3553 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3556 /* Open a connection to a remote debugger using the extended
3557 remote gdb protocol. NAME is the filename used for communication. */
3560 extended_remote_open (char *name
, int from_tty
)
3562 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3565 /* Generic code for opening a connection to a remote target. */
3568 init_all_packet_configs (void)
3572 for (i
= 0; i
< PACKET_MAX
; i
++)
3573 update_packet_config (&remote_protocol_packets
[i
]);
3576 /* Symbol look-up. */
3579 remote_check_symbols (struct objfile
*objfile
)
3581 struct remote_state
*rs
= get_remote_state ();
3582 char *msg
, *reply
, *tmp
;
3583 struct minimal_symbol
*sym
;
3586 /* The remote side has no concept of inferiors that aren't running
3587 yet, it only knows about running processes. If we're connected
3588 but our current inferior is not running, we should not invite the
3589 remote target to request symbol lookups related to its
3590 (unrelated) current process. */
3591 if (!target_has_execution
)
3594 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3597 /* Make sure the remote is pointing at the right process. Note
3598 there's no way to select "no process". */
3599 set_general_process ();
3601 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3602 because we need both at the same time. */
3603 msg
= alloca (get_remote_packet_size ());
3605 /* Invite target to request symbol lookups. */
3607 putpkt ("qSymbol::");
3608 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3609 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3612 while (strncmp (reply
, "qSymbol:", 8) == 0)
3615 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3617 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3619 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3622 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3623 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3625 /* If this is a function address, return the start of code
3626 instead of any data function descriptor. */
3627 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3631 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3632 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3641 static struct serial
*
3642 remote_serial_open (char *name
)
3644 static int udp_warning
= 0;
3646 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3647 of in ser-tcp.c, because it is the remote protocol assuming that the
3648 serial connection is reliable and not the serial connection promising
3650 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3652 warning (_("The remote protocol may be unreliable over UDP.\n"
3653 "Some events may be lost, rendering further debugging "
3658 return serial_open (name
);
3661 /* Inform the target of our permission settings. The permission flags
3662 work without this, but if the target knows the settings, it can do
3663 a couple things. First, it can add its own check, to catch cases
3664 that somehow manage to get by the permissions checks in target
3665 methods. Second, if the target is wired to disallow particular
3666 settings (for instance, a system in the field that is not set up to
3667 be able to stop at a breakpoint), it can object to any unavailable
3671 remote_set_permissions (void)
3673 struct remote_state
*rs
= get_remote_state ();
3675 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3676 "WriteReg:%x;WriteMem:%x;"
3677 "InsertBreak:%x;InsertTrace:%x;"
3678 "InsertFastTrace:%x;Stop:%x",
3679 may_write_registers
, may_write_memory
,
3680 may_insert_breakpoints
, may_insert_tracepoints
,
3681 may_insert_fast_tracepoints
, may_stop
);
3683 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3685 /* If the target didn't like the packet, warn the user. Do not try
3686 to undo the user's settings, that would just be maddening. */
3687 if (strcmp (rs
->buf
, "OK") != 0)
3688 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3691 /* This type describes each known response to the qSupported
3693 struct protocol_feature
3695 /* The name of this protocol feature. */
3698 /* The default for this protocol feature. */
3699 enum packet_support default_support
;
3701 /* The function to call when this feature is reported, or after
3702 qSupported processing if the feature is not supported.
3703 The first argument points to this structure. The second
3704 argument indicates whether the packet requested support be
3705 enabled, disabled, or probed (or the default, if this function
3706 is being called at the end of processing and this feature was
3707 not reported). The third argument may be NULL; if not NULL, it
3708 is a NUL-terminated string taken from the packet following
3709 this feature's name and an equals sign. */
3710 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3713 /* The corresponding packet for this feature. Only used if
3714 FUNC is remote_supported_packet. */
3719 remote_supported_packet (const struct protocol_feature
*feature
,
3720 enum packet_support support
,
3721 const char *argument
)
3725 warning (_("Remote qSupported response supplied an unexpected value for"
3726 " \"%s\"."), feature
->name
);
3730 if (remote_protocol_packets
[feature
->packet
].support
3731 == PACKET_SUPPORT_UNKNOWN
)
3732 remote_protocol_packets
[feature
->packet
].support
= support
;
3736 remote_packet_size (const struct protocol_feature
*feature
,
3737 enum packet_support support
, const char *value
)
3739 struct remote_state
*rs
= get_remote_state ();
3744 if (support
!= PACKET_ENABLE
)
3747 if (value
== NULL
|| *value
== '\0')
3749 warning (_("Remote target reported \"%s\" without a size."),
3755 packet_size
= strtol (value
, &value_end
, 16);
3756 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3758 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3759 feature
->name
, value
);
3763 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3765 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3766 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3767 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3770 /* Record the new maximum packet size. */
3771 rs
->explicit_packet_size
= packet_size
;
3775 remote_multi_process_feature (const struct protocol_feature
*feature
,
3776 enum packet_support support
, const char *value
)
3778 struct remote_state
*rs
= get_remote_state ();
3780 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3784 remote_non_stop_feature (const struct protocol_feature
*feature
,
3785 enum packet_support support
, const char *value
)
3787 struct remote_state
*rs
= get_remote_state ();
3789 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3793 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3794 enum packet_support support
,
3797 struct remote_state
*rs
= get_remote_state ();
3799 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3803 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3804 enum packet_support support
,
3807 struct remote_state
*rs
= get_remote_state ();
3809 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3813 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3814 enum packet_support support
,
3817 struct remote_state
*rs
= get_remote_state ();
3819 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3823 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3824 enum packet_support support
,
3827 struct remote_state
*rs
= get_remote_state ();
3829 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3833 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3834 enum packet_support support
,
3837 struct remote_state
*rs
= get_remote_state ();
3839 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3843 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3844 enum packet_support support
,
3847 struct remote_state
*rs
= get_remote_state ();
3849 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3853 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3854 enum packet_support support
,
3857 struct remote_state
*rs
= get_remote_state ();
3859 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3863 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3864 enum packet_support support
,
3867 struct remote_state
*rs
= get_remote_state ();
3869 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3873 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3874 enum packet_support support
,
3877 struct remote_state
*rs
= get_remote_state ();
3879 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3882 static struct protocol_feature remote_protocol_features
[] = {
3883 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3884 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3885 PACKET_qXfer_auxv
},
3886 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3887 PACKET_qXfer_features
},
3888 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3889 PACKET_qXfer_libraries
},
3890 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3891 PACKET_qXfer_libraries_svr4
},
3892 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3893 PACKET_qXfer_memory_map
},
3894 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3895 PACKET_qXfer_spu_read
},
3896 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3897 PACKET_qXfer_spu_write
},
3898 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3899 PACKET_qXfer_osdata
},
3900 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3901 PACKET_qXfer_threads
},
3902 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3903 PACKET_qXfer_traceframe_info
},
3904 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3905 PACKET_QPassSignals
},
3906 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3907 PACKET_QProgramSignals
},
3908 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3909 PACKET_QStartNoAckMode
},
3910 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3911 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3912 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3913 PACKET_qXfer_siginfo_read
},
3914 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3915 PACKET_qXfer_siginfo_write
},
3916 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3917 PACKET_ConditionalTracepoints
},
3918 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3919 PACKET_ConditionalBreakpoints
},
3920 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3921 PACKET_BreakpointCommands
},
3922 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3923 PACKET_FastTracepoints
},
3924 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3925 PACKET_StaticTracepoints
},
3926 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3927 PACKET_InstallInTrace
},
3928 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3930 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3932 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3934 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3935 PACKET_TracepointSource
},
3936 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3938 { "EnableDisableTracepoints", PACKET_DISABLE
,
3939 remote_enable_disable_tracepoint_feature
, -1 },
3940 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3941 PACKET_qXfer_fdpic
},
3942 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3944 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3945 PACKET_QDisableRandomization
},
3946 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3947 { "tracenz", PACKET_DISABLE
,
3948 remote_string_tracing_feature
, -1 },
3951 static char *remote_support_xml
;
3953 /* Register string appended to "xmlRegisters=" in qSupported query. */
3956 register_remote_support_xml (const char *xml
)
3958 #if defined(HAVE_LIBEXPAT)
3959 if (remote_support_xml
== NULL
)
3960 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3963 char *copy
= xstrdup (remote_support_xml
+ 13);
3964 char *p
= strtok (copy
, ",");
3968 if (strcmp (p
, xml
) == 0)
3975 while ((p
= strtok (NULL
, ",")) != NULL
);
3978 remote_support_xml
= reconcat (remote_support_xml
,
3979 remote_support_xml
, ",", xml
,
3986 remote_query_supported_append (char *msg
, const char *append
)
3989 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3991 return xstrdup (append
);
3995 remote_query_supported (void)
3997 struct remote_state
*rs
= get_remote_state ();
4000 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4002 /* The packet support flags are handled differently for this packet
4003 than for most others. We treat an error, a disabled packet, and
4004 an empty response identically: any features which must be reported
4005 to be used will be automatically disabled. An empty buffer
4006 accomplishes this, since that is also the representation for a list
4007 containing no features. */
4010 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4013 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4015 q
= remote_query_supported_append (q
, "multiprocess+");
4017 if (remote_support_xml
)
4018 q
= remote_query_supported_append (q
, remote_support_xml
);
4020 q
= remote_query_supported_append (q
, "qRelocInsn+");
4022 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4025 do_cleanups (old_chain
);
4027 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4029 /* If an error occured, warn, but do not return - just reset the
4030 buffer to empty and go on to disable features. */
4031 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4034 warning (_("Remote failure reply: %s"), rs
->buf
);
4039 memset (seen
, 0, sizeof (seen
));
4044 enum packet_support is_supported
;
4045 char *p
, *end
, *name_end
, *value
;
4047 /* First separate out this item from the rest of the packet. If
4048 there's another item after this, we overwrite the separator
4049 (terminated strings are much easier to work with). */
4051 end
= strchr (p
, ';');
4054 end
= p
+ strlen (p
);
4064 warning (_("empty item in \"qSupported\" response"));
4069 name_end
= strchr (p
, '=');
4072 /* This is a name=value entry. */
4073 is_supported
= PACKET_ENABLE
;
4074 value
= name_end
+ 1;
4083 is_supported
= PACKET_ENABLE
;
4087 is_supported
= PACKET_DISABLE
;
4091 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4095 warning (_("unrecognized item \"%s\" "
4096 "in \"qSupported\" response"), p
);
4102 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4103 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4105 const struct protocol_feature
*feature
;
4108 feature
= &remote_protocol_features
[i
];
4109 feature
->func (feature
, is_supported
, value
);
4114 /* If we increased the packet size, make sure to increase the global
4115 buffer size also. We delay this until after parsing the entire
4116 qSupported packet, because this is the same buffer we were
4118 if (rs
->buf_size
< rs
->explicit_packet_size
)
4120 rs
->buf_size
= rs
->explicit_packet_size
;
4121 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4124 /* Handle the defaults for unmentioned features. */
4125 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4128 const struct protocol_feature
*feature
;
4130 feature
= &remote_protocol_features
[i
];
4131 feature
->func (feature
, feature
->default_support
, NULL
);
4137 remote_open_1 (char *name
, int from_tty
,
4138 struct target_ops
*target
, int extended_p
)
4140 struct remote_state
*rs
= get_remote_state ();
4143 error (_("To open a remote debug connection, you need to specify what\n"
4144 "serial device is attached to the remote system\n"
4145 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4147 /* See FIXME above. */
4148 if (!target_async_permitted
)
4149 wait_forever_enabled_p
= 1;
4151 /* If we're connected to a running target, target_preopen will kill it.
4152 But if we're connected to a target system with no running process,
4153 then we will still be connected when it returns. Ask this question
4154 first, before target_preopen has a chance to kill anything. */
4155 if (remote_desc
!= NULL
&& !have_inferiors ())
4158 || query (_("Already connected to a remote target. Disconnect? ")))
4161 error (_("Still connected."));
4164 target_preopen (from_tty
);
4166 unpush_target (target
);
4168 /* This time without a query. If we were connected to an
4169 extended-remote target and target_preopen killed the running
4170 process, we may still be connected. If we are starting "target
4171 remote" now, the extended-remote target will not have been
4172 removed by unpush_target. */
4173 if (remote_desc
!= NULL
&& !have_inferiors ())
4176 /* Make sure we send the passed signals list the next time we resume. */
4177 xfree (last_pass_packet
);
4178 last_pass_packet
= NULL
;
4180 /* Make sure we send the program signals list the next time we
4182 xfree (last_program_signals_packet
);
4183 last_program_signals_packet
= NULL
;
4185 remote_fileio_reset ();
4186 reopen_exec_file ();
4189 remote_desc
= remote_serial_open (name
);
4191 perror_with_name (name
);
4193 if (baud_rate
!= -1)
4195 if (serial_setbaudrate (remote_desc
, baud_rate
))
4197 /* The requested speed could not be set. Error out to
4198 top level after closing remote_desc. Take care to
4199 set remote_desc to NULL to avoid closing remote_desc
4201 serial_close (remote_desc
);
4203 perror_with_name (name
);
4207 serial_raw (remote_desc
);
4209 /* If there is something sitting in the buffer we might take it as a
4210 response to a command, which would be bad. */
4211 serial_flush_input (remote_desc
);
4215 puts_filtered ("Remote debugging using ");
4216 puts_filtered (name
);
4217 puts_filtered ("\n");
4219 push_target (target
); /* Switch to using remote target now. */
4221 /* Register extra event sources in the event loop. */
4222 remote_async_inferior_event_token
4223 = create_async_event_handler (remote_async_inferior_event_handler
,
4225 remote_async_get_pending_events_token
4226 = create_async_event_handler (remote_async_get_pending_events_handler
,
4229 /* Reset the target state; these things will be queried either by
4230 remote_query_supported or as they are needed. */
4231 init_all_packet_configs ();
4232 rs
->cached_wait_status
= 0;
4233 rs
->explicit_packet_size
= 0;
4235 rs
->multi_process_aware
= 0;
4236 rs
->extended
= extended_p
;
4237 rs
->non_stop_aware
= 0;
4238 rs
->waiting_for_stop_reply
= 0;
4239 rs
->ctrlc_pending_p
= 0;
4241 general_thread
= not_sent_ptid
;
4242 continue_thread
= not_sent_ptid
;
4243 remote_traceframe_number
= -1;
4245 /* Probe for ability to use "ThreadInfo" query, as required. */
4246 use_threadinfo_query
= 1;
4247 use_threadextra_query
= 1;
4249 if (target_async_permitted
)
4251 /* With this target we start out by owning the terminal. */
4252 remote_async_terminal_ours_p
= 1;
4254 /* FIXME: cagney/1999-09-23: During the initial connection it is
4255 assumed that the target is already ready and able to respond to
4256 requests. Unfortunately remote_start_remote() eventually calls
4257 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4258 around this. Eventually a mechanism that allows
4259 wait_for_inferior() to expect/get timeouts will be
4261 wait_forever_enabled_p
= 0;
4264 /* First delete any symbols previously loaded from shared libraries. */
4265 no_shared_libraries (NULL
, 0);
4268 init_thread_list ();
4270 /* Start the remote connection. If error() or QUIT, discard this
4271 target (we'd otherwise be in an inconsistent state) and then
4272 propogate the error on up the exception chain. This ensures that
4273 the caller doesn't stumble along blindly assuming that the
4274 function succeeded. The CLI doesn't have this problem but other
4275 UI's, such as MI do.
4277 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4278 this function should return an error indication letting the
4279 caller restore the previous state. Unfortunately the command
4280 ``target remote'' is directly wired to this function making that
4281 impossible. On a positive note, the CLI side of this problem has
4282 been fixed - the function set_cmd_context() makes it possible for
4283 all the ``target ....'' commands to share a common callback
4284 function. See cli-dump.c. */
4286 volatile struct gdb_exception ex
;
4288 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4290 remote_start_remote (from_tty
, target
, extended_p
);
4294 /* Pop the partially set up target - unless something else did
4295 already before throwing the exception. */
4296 if (remote_desc
!= NULL
)
4298 if (target_async_permitted
)
4299 wait_forever_enabled_p
= 1;
4300 throw_exception (ex
);
4304 if (target_async_permitted
)
4305 wait_forever_enabled_p
= 1;
4308 /* This takes a program previously attached to and detaches it. After
4309 this is done, GDB can be used to debug some other program. We
4310 better not have left any breakpoints in the target program or it'll
4311 die when it hits one. */
4314 remote_detach_1 (char *args
, int from_tty
, int extended
)
4316 int pid
= ptid_get_pid (inferior_ptid
);
4317 struct remote_state
*rs
= get_remote_state ();
4320 error (_("Argument given to \"detach\" when remotely debugging."));
4322 if (!target_has_execution
)
4323 error (_("No process to detach from."));
4327 char *exec_file
= get_exec_file (0);
4328 if (exec_file
== NULL
)
4330 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4331 target_pid_to_str (pid_to_ptid (pid
)));
4332 gdb_flush (gdb_stdout
);
4335 /* Tell the remote target to detach. */
4336 if (remote_multi_process_p (rs
))
4337 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4339 strcpy (rs
->buf
, "D");
4342 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4344 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4346 else if (rs
->buf
[0] == '\0')
4347 error (_("Remote doesn't know how to detach"));
4349 error (_("Can't detach process."));
4351 if (from_tty
&& !extended
)
4352 puts_filtered (_("Ending remote debugging.\n"));
4354 discard_pending_stop_replies (pid
);
4355 target_mourn_inferior ();
4359 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4361 remote_detach_1 (args
, from_tty
, 0);
4365 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4367 remote_detach_1 (args
, from_tty
, 1);
4370 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4373 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4376 error (_("Argument given to \"disconnect\" when remotely debugging."));
4378 /* Make sure we unpush even the extended remote targets; mourn
4379 won't do it. So call remote_mourn_1 directly instead of
4380 target_mourn_inferior. */
4381 remote_mourn_1 (target
);
4384 puts_filtered ("Ending remote debugging.\n");
4387 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4388 be chatty about it. */
4391 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4393 struct remote_state
*rs
= get_remote_state ();
4395 char *wait_status
= NULL
;
4397 pid
= parse_pid_to_attach (args
);
4399 /* Remote PID can be freely equal to getpid, do not check it here the same
4400 way as in other targets. */
4402 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4403 error (_("This target does not support attaching to a process"));
4407 char *exec_file
= get_exec_file (0);
4410 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4411 target_pid_to_str (pid_to_ptid (pid
)));
4413 printf_unfiltered (_("Attaching to %s\n"),
4414 target_pid_to_str (pid_to_ptid (pid
)));
4416 gdb_flush (gdb_stdout
);
4419 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4421 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4423 if (packet_ok (rs
->buf
,
4424 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4428 /* Save the reply for later. */
4429 wait_status
= alloca (strlen (rs
->buf
) + 1);
4430 strcpy (wait_status
, rs
->buf
);
4432 else if (strcmp (rs
->buf
, "OK") != 0)
4433 error (_("Attaching to %s failed with: %s"),
4434 target_pid_to_str (pid_to_ptid (pid
)),
4437 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4438 error (_("This target does not support attaching to a process"));
4440 error (_("Attaching to %s failed"),
4441 target_pid_to_str (pid_to_ptid (pid
)));
4443 set_current_inferior (remote_add_inferior (0, pid
, 1));
4445 inferior_ptid
= pid_to_ptid (pid
);
4449 struct thread_info
*thread
;
4451 /* Get list of threads. */
4452 remote_threads_info (target
);
4454 thread
= first_thread_of_process (pid
);
4456 inferior_ptid
= thread
->ptid
;
4458 inferior_ptid
= pid_to_ptid (pid
);
4460 /* Invalidate our notion of the remote current thread. */
4461 record_currthread (minus_one_ptid
);
4465 /* Now, if we have thread information, update inferior_ptid. */
4466 inferior_ptid
= remote_current_thread (inferior_ptid
);
4468 /* Add the main thread to the thread list. */
4469 add_thread_silent (inferior_ptid
);
4472 /* Next, if the target can specify a description, read it. We do
4473 this before anything involving memory or registers. */
4474 target_find_description ();
4478 /* Use the previously fetched status. */
4479 gdb_assert (wait_status
!= NULL
);
4481 if (target_can_async_p ())
4483 struct stop_reply
*stop_reply
;
4484 struct cleanup
*old_chain
;
4486 stop_reply
= stop_reply_xmalloc ();
4487 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4488 remote_parse_stop_reply (wait_status
, stop_reply
);
4489 discard_cleanups (old_chain
);
4490 push_stop_reply (stop_reply
);
4492 target_async (inferior_event_handler
, 0);
4496 gdb_assert (wait_status
!= NULL
);
4497 strcpy (rs
->buf
, wait_status
);
4498 rs
->cached_wait_status
= 1;
4502 gdb_assert (wait_status
== NULL
);
4506 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4508 extended_remote_attach_1 (ops
, args
, from_tty
);
4511 /* Convert hex digit A to a number. */
4516 if (a
>= '0' && a
<= '9')
4518 else if (a
>= 'a' && a
<= 'f')
4519 return a
- 'a' + 10;
4520 else if (a
>= 'A' && a
<= 'F')
4521 return a
- 'A' + 10;
4523 error (_("Reply contains invalid hex digit %d"), a
);
4527 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4531 for (i
= 0; i
< count
; i
++)
4533 if (hex
[0] == 0 || hex
[1] == 0)
4535 /* Hex string is short, or of uneven length.
4536 Return the count that has been converted so far. */
4539 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4545 /* Convert number NIB to a hex digit. */
4553 return 'a' + nib
- 10;
4557 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4561 /* May use a length, or a nul-terminated string as input. */
4563 count
= strlen ((char *) bin
);
4565 for (i
= 0; i
< count
; i
++)
4567 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4568 *hex
++ = tohex (*bin
++ & 0xf);
4574 /* Check for the availability of vCont. This function should also check
4578 remote_vcont_probe (struct remote_state
*rs
)
4582 strcpy (rs
->buf
, "vCont?");
4584 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4587 /* Make sure that the features we assume are supported. */
4588 if (strncmp (buf
, "vCont", 5) == 0)
4591 int support_s
, support_S
, support_c
, support_C
;
4597 rs
->support_vCont_t
= 0;
4598 while (p
&& *p
== ';')
4601 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4603 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4605 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4607 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4609 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4610 rs
->support_vCont_t
= 1;
4612 p
= strchr (p
, ';');
4615 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4616 BUF will make packet_ok disable the packet. */
4617 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4621 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4624 /* Helper function for building "vCont" resumptions. Write a
4625 resumption to P. ENDP points to one-passed-the-end of the buffer
4626 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4627 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4628 resumed thread should be single-stepped and/or signalled. If PTID
4629 equals minus_one_ptid, then all threads are resumed; if PTID
4630 represents a process, then all threads of the process are resumed;
4631 the thread to be stepped and/or signalled is given in the global
4635 append_resumption (char *p
, char *endp
,
4636 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4638 struct remote_state
*rs
= get_remote_state ();
4640 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4641 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4643 p
+= xsnprintf (p
, endp
- p
, ";s");
4644 else if (siggnal
!= GDB_SIGNAL_0
)
4645 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4647 p
+= xsnprintf (p
, endp
- p
, ";c");
4649 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4653 /* All (-1) threads of process. */
4654 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4656 p
+= xsnprintf (p
, endp
- p
, ":");
4657 p
= write_ptid (p
, endp
, nptid
);
4659 else if (!ptid_equal (ptid
, minus_one_ptid
))
4661 p
+= xsnprintf (p
, endp
- p
, ":");
4662 p
= write_ptid (p
, endp
, ptid
);
4668 /* Append a vCont continue-with-signal action for threads that have a
4669 non-zero stop signal. */
4672 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4674 struct thread_info
*thread
;
4676 ALL_THREADS (thread
)
4677 if (ptid_match (thread
->ptid
, ptid
)
4678 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4679 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4680 && signal_pass_state (thread
->suspend
.stop_signal
))
4682 p
= append_resumption (p
, endp
, thread
->ptid
,
4683 0, thread
->suspend
.stop_signal
);
4684 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4690 /* Resume the remote inferior by using a "vCont" packet. The thread
4691 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4692 resumed thread should be single-stepped and/or signalled. If PTID
4693 equals minus_one_ptid, then all threads are resumed; the thread to
4694 be stepped and/or signalled is given in the global INFERIOR_PTID.
4695 This function returns non-zero iff it resumes the inferior.
4697 This function issues a strict subset of all possible vCont commands at the
4701 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4703 struct remote_state
*rs
= get_remote_state ();
4707 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4708 remote_vcont_probe (rs
);
4710 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4714 endp
= rs
->buf
+ get_remote_packet_size ();
4716 /* If we could generate a wider range of packets, we'd have to worry
4717 about overflowing BUF. Should there be a generic
4718 "multi-part-packet" packet? */
4720 p
+= xsnprintf (p
, endp
- p
, "vCont");
4722 if (ptid_equal (ptid
, magic_null_ptid
))
4724 /* MAGIC_NULL_PTID means that we don't have any active threads,
4725 so we don't have any TID numbers the inferior will
4726 understand. Make sure to only send forms that do not specify
4728 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4730 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4732 /* Resume all threads (of all processes, or of a single
4733 process), with preference for INFERIOR_PTID. This assumes
4734 inferior_ptid belongs to the set of all threads we are about
4736 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4738 /* Step inferior_ptid, with or without signal. */
4739 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4742 /* Also pass down any pending signaled resumption for other
4743 threads not the current. */
4744 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4746 /* And continue others without a signal. */
4747 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4751 /* Scheduler locking; resume only PTID. */
4752 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4755 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4760 /* In non-stop, the stub replies to vCont with "OK". The stop
4761 reply will be reported asynchronously by means of a `%Stop'
4763 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4764 if (strcmp (rs
->buf
, "OK") != 0)
4765 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4771 /* Tell the remote machine to resume. */
4773 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4775 static int last_sent_step
;
4778 remote_resume (struct target_ops
*ops
,
4779 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4781 struct remote_state
*rs
= get_remote_state ();
4784 last_sent_signal
= siggnal
;
4785 last_sent_step
= step
;
4787 /* The vCont packet doesn't need to specify threads via Hc. */
4788 /* No reverse support (yet) for vCont. */
4789 if (execution_direction
!= EXEC_REVERSE
)
4790 if (remote_vcont_resume (ptid
, step
, siggnal
))
4793 /* All other supported resume packets do use Hc, so set the continue
4795 if (ptid_equal (ptid
, minus_one_ptid
))
4796 set_continue_thread (any_thread_ptid
);
4798 set_continue_thread (ptid
);
4801 if (execution_direction
== EXEC_REVERSE
)
4803 /* We don't pass signals to the target in reverse exec mode. */
4804 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4805 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4809 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4810 error (_("Remote reverse-step not supported."));
4812 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4813 error (_("Remote reverse-continue not supported."));
4815 strcpy (buf
, step
? "bs" : "bc");
4817 else if (siggnal
!= GDB_SIGNAL_0
)
4819 buf
[0] = step
? 'S' : 'C';
4820 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4821 buf
[2] = tohex (((int) siggnal
) & 0xf);
4825 strcpy (buf
, step
? "s" : "c");
4830 /* We are about to start executing the inferior, let's register it
4831 with the event loop. NOTE: this is the one place where all the
4832 execution commands end up. We could alternatively do this in each
4833 of the execution commands in infcmd.c. */
4834 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4835 into infcmd.c in order to allow inferior function calls to work
4836 NOT asynchronously. */
4837 if (target_can_async_p ())
4838 target_async (inferior_event_handler
, 0);
4840 /* We've just told the target to resume. The remote server will
4841 wait for the inferior to stop, and then send a stop reply. In
4842 the mean time, we can't start another command/query ourselves
4843 because the stub wouldn't be ready to process it. This applies
4844 only to the base all-stop protocol, however. In non-stop (which
4845 only supports vCont), the stub replies with an "OK", and is
4846 immediate able to process further serial input. */
4848 rs
->waiting_for_stop_reply
= 1;
4852 /* Set up the signal handler for SIGINT, while the target is
4853 executing, ovewriting the 'regular' SIGINT signal handler. */
4855 initialize_sigint_signal_handler (void)
4857 signal (SIGINT
, handle_remote_sigint
);
4860 /* Signal handler for SIGINT, while the target is executing. */
4862 handle_remote_sigint (int sig
)
4864 signal (sig
, handle_remote_sigint_twice
);
4865 mark_async_signal_handler (sigint_remote_token
);
4868 /* Signal handler for SIGINT, installed after SIGINT has already been
4869 sent once. It will take effect the second time that the user sends
4872 handle_remote_sigint_twice (int sig
)
4874 signal (sig
, handle_remote_sigint
);
4875 mark_async_signal_handler (sigint_remote_twice_token
);
4878 /* Perform the real interruption of the target execution, in response
4881 async_remote_interrupt (gdb_client_data arg
)
4884 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4886 target_stop (inferior_ptid
);
4889 /* Perform interrupt, if the first attempt did not succeed. Just give
4890 up on the target alltogether. */
4892 async_remote_interrupt_twice (gdb_client_data arg
)
4895 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4900 /* Reinstall the usual SIGINT handlers, after the target has
4903 cleanup_sigint_signal_handler (void *dummy
)
4905 signal (SIGINT
, handle_sigint
);
4908 /* Send ^C to target to halt it. Target will respond, and send us a
4910 static void (*ofunc
) (int);
4912 /* The command line interface's stop routine. This function is installed
4913 as a signal handler for SIGINT. The first time a user requests a
4914 stop, we call remote_stop to send a break or ^C. If there is no
4915 response from the target (it didn't stop when the user requested it),
4916 we ask the user if he'd like to detach from the target. */
4918 remote_interrupt (int signo
)
4920 /* If this doesn't work, try more severe steps. */
4921 signal (signo
, remote_interrupt_twice
);
4923 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4926 /* The user typed ^C twice. */
4929 remote_interrupt_twice (int signo
)
4931 signal (signo
, ofunc
);
4932 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4933 signal (signo
, remote_interrupt
);
4936 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4937 thread, all threads of a remote process, or all threads of all
4941 remote_stop_ns (ptid_t ptid
)
4943 struct remote_state
*rs
= get_remote_state ();
4945 char *endp
= rs
->buf
+ get_remote_packet_size ();
4947 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4948 remote_vcont_probe (rs
);
4950 if (!rs
->support_vCont_t
)
4951 error (_("Remote server does not support stopping threads"));
4953 if (ptid_equal (ptid
, minus_one_ptid
)
4954 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4955 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4960 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4962 if (ptid_is_pid (ptid
))
4963 /* All (-1) threads of process. */
4964 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4967 /* Small optimization: if we already have a stop reply for
4968 this thread, no use in telling the stub we want this
4970 if (peek_stop_reply (ptid
))
4976 write_ptid (p
, endp
, nptid
);
4979 /* In non-stop, we get an immediate OK reply. The stop reply will
4980 come in asynchronously by notification. */
4982 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4983 if (strcmp (rs
->buf
, "OK") != 0)
4984 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4987 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4988 remote target. It is undefined which thread of which process
4989 reports the stop. */
4992 remote_stop_as (ptid_t ptid
)
4994 struct remote_state
*rs
= get_remote_state ();
4996 rs
->ctrlc_pending_p
= 1;
4998 /* If the inferior is stopped already, but the core didn't know
4999 about it yet, just ignore the request. The cached wait status
5000 will be collected in remote_wait. */
5001 if (rs
->cached_wait_status
)
5004 /* Send interrupt_sequence to remote target. */
5005 send_interrupt_sequence ();
5008 /* This is the generic stop called via the target vector. When a target
5009 interrupt is requested, either by the command line or the GUI, we
5010 will eventually end up here. */
5013 remote_stop (ptid_t ptid
)
5016 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5019 remote_stop_ns (ptid
);
5021 remote_stop_as (ptid
);
5024 /* Ask the user what to do when an interrupt is received. */
5027 interrupt_query (void)
5029 target_terminal_ours ();
5031 if (target_can_async_p ())
5033 signal (SIGINT
, handle_sigint
);
5034 deprecated_throw_reason (RETURN_QUIT
);
5038 if (query (_("Interrupted while waiting for the program.\n\
5039 Give up (and stop debugging it)? ")))
5042 deprecated_throw_reason (RETURN_QUIT
);
5046 target_terminal_inferior ();
5049 /* Enable/disable target terminal ownership. Most targets can use
5050 terminal groups to control terminal ownership. Remote targets are
5051 different in that explicit transfer of ownership to/from GDB/target
5055 remote_terminal_inferior (void)
5057 if (!target_async_permitted
)
5058 /* Nothing to do. */
5061 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5062 idempotent. The event-loop GDB talking to an asynchronous target
5063 with a synchronous command calls this function from both
5064 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5065 transfer the terminal to the target when it shouldn't this guard
5067 if (!remote_async_terminal_ours_p
)
5069 delete_file_handler (input_fd
);
5070 remote_async_terminal_ours_p
= 0;
5071 initialize_sigint_signal_handler ();
5072 /* NOTE: At this point we could also register our selves as the
5073 recipient of all input. Any characters typed could then be
5074 passed on down to the target. */
5078 remote_terminal_ours (void)
5080 if (!target_async_permitted
)
5081 /* Nothing to do. */
5084 /* See FIXME in remote_terminal_inferior. */
5085 if (remote_async_terminal_ours_p
)
5087 cleanup_sigint_signal_handler (NULL
);
5088 add_file_handler (input_fd
, stdin_event_handler
, 0);
5089 remote_async_terminal_ours_p
= 1;
5093 remote_console_output (char *msg
)
5097 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5100 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5104 fputs_unfiltered (tb
, gdb_stdtarg
);
5106 gdb_flush (gdb_stdtarg
);
5109 typedef struct cached_reg
5112 gdb_byte data
[MAX_REGISTER_SIZE
];
5115 DEF_VEC_O(cached_reg_t
);
5119 struct stop_reply
*next
;
5123 struct target_waitstatus ws
;
5125 /* Expedited registers. This makes remote debugging a bit more
5126 efficient for those targets that provide critical registers as
5127 part of their normal status mechanism (as another roundtrip to
5128 fetch them is avoided). */
5129 VEC(cached_reg_t
) *regcache
;
5131 int stopped_by_watchpoint_p
;
5132 CORE_ADDR watch_data_address
;
5140 /* The list of already fetched and acknowledged stop events. */
5141 static struct stop_reply
*stop_reply_queue
;
5143 static struct stop_reply
*
5144 stop_reply_xmalloc (void)
5146 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
5153 stop_reply_xfree (struct stop_reply
*r
)
5157 VEC_free (cached_reg_t
, r
->regcache
);
5162 /* Discard all pending stop replies of inferior PID. If PID is -1,
5163 discard everything. */
5166 discard_pending_stop_replies (int pid
)
5168 struct stop_reply
*prev
= NULL
, *reply
, *next
;
5170 /* Discard the in-flight notification. */
5171 if (pending_stop_reply
!= NULL
5173 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
5175 stop_reply_xfree (pending_stop_reply
);
5176 pending_stop_reply
= NULL
;
5179 /* Discard the stop replies we have already pulled with
5181 for (reply
= stop_reply_queue
; reply
; reply
= next
)
5185 || ptid_get_pid (reply
->ptid
) == pid
)
5187 if (reply
== stop_reply_queue
)
5188 stop_reply_queue
= reply
->next
;
5190 prev
->next
= reply
->next
;
5192 stop_reply_xfree (reply
);
5199 /* Cleanup wrapper. */
5202 do_stop_reply_xfree (void *arg
)
5204 struct stop_reply
*r
= arg
;
5206 stop_reply_xfree (r
);
5209 /* Look for a queued stop reply belonging to PTID. If one is found,
5210 remove it from the queue, and return it. Returns NULL if none is
5211 found. If there are still queued events left to process, tell the
5212 event loop to get back to target_wait soon. */
5214 static struct stop_reply
*
5215 queued_stop_reply (ptid_t ptid
)
5217 struct stop_reply
*it
;
5218 struct stop_reply
**it_link
;
5220 it
= stop_reply_queue
;
5221 it_link
= &stop_reply_queue
;
5224 if (ptid_match (it
->ptid
, ptid
))
5226 *it_link
= it
->next
;
5231 it_link
= &it
->next
;
5235 if (stop_reply_queue
)
5236 /* There's still at least an event left. */
5237 mark_async_event_handler (remote_async_inferior_event_token
);
5242 /* Push a fully parsed stop reply in the stop reply queue. Since we
5243 know that we now have at least one queued event left to pass to the
5244 core side, tell the event loop to get back to target_wait soon. */
5247 push_stop_reply (struct stop_reply
*new_event
)
5249 struct stop_reply
*event
;
5251 if (stop_reply_queue
)
5253 for (event
= stop_reply_queue
;
5254 event
&& event
->next
;
5255 event
= event
->next
)
5258 event
->next
= new_event
;
5261 stop_reply_queue
= new_event
;
5263 mark_async_event_handler (remote_async_inferior_event_token
);
5266 /* Returns true if we have a stop reply for PTID. */
5269 peek_stop_reply (ptid_t ptid
)
5271 struct stop_reply
*it
;
5273 for (it
= stop_reply_queue
; it
; it
= it
->next
)
5274 if (ptid_equal (ptid
, it
->ptid
))
5276 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5283 /* Parse the stop reply in BUF. Either the function succeeds, and the
5284 result is stored in EVENT, or throws an error. */
5287 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5289 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5293 event
->ptid
= null_ptid
;
5294 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5295 event
->ws
.value
.integer
= 0;
5296 event
->solibs_changed
= 0;
5297 event
->replay_event
= 0;
5298 event
->stopped_by_watchpoint_p
= 0;
5299 event
->regcache
= NULL
;
5304 case 'T': /* Status with PC, SP, FP, ... */
5305 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5306 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5308 n... = register number
5309 r... = register contents
5312 p
= &buf
[3]; /* after Txx */
5320 /* If the packet contains a register number, save it in
5321 pnum and set p1 to point to the character following it.
5322 Otherwise p1 points to p. */
5324 /* If this packet is an awatch packet, don't parse the 'a'
5325 as a register number. */
5327 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5328 && strncmp (p
, "core", strlen ("core") != 0))
5330 /* Read the ``P'' register number. */
5331 pnum
= strtol (p
, &p_temp
, 16);
5337 if (p1
== p
) /* No register number present here. */
5339 p1
= strchr (p
, ':');
5341 error (_("Malformed packet(a) (missing colon): %s\n\
5344 if (strncmp (p
, "thread", p1
- p
) == 0)
5345 event
->ptid
= read_ptid (++p1
, &p
);
5346 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5347 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5348 || (strncmp (p
, "awatch", p1
- p
) == 0))
5350 event
->stopped_by_watchpoint_p
= 1;
5351 p
= unpack_varlen_hex (++p1
, &addr
);
5352 event
->watch_data_address
= (CORE_ADDR
) addr
;
5354 else if (strncmp (p
, "library", p1
- p
) == 0)
5358 while (*p_temp
&& *p_temp
!= ';')
5361 event
->solibs_changed
= 1;
5364 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5366 /* NO_HISTORY event.
5367 p1 will indicate "begin" or "end", but
5368 it makes no difference for now, so ignore it. */
5369 event
->replay_event
= 1;
5370 p_temp
= strchr (p1
+ 1, ';');
5374 else if (strncmp (p
, "core", p1
- p
) == 0)
5378 p
= unpack_varlen_hex (++p1
, &c
);
5383 /* Silently skip unknown optional info. */
5384 p_temp
= strchr (p1
+ 1, ';');
5391 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5392 cached_reg_t cached_reg
;
5397 error (_("Malformed packet(b) (missing colon): %s\n\
5403 error (_("Remote sent bad register number %s: %s\n\
5405 hex_string (pnum
), p
, buf
);
5407 cached_reg
.num
= reg
->regnum
;
5409 fieldsize
= hex2bin (p
, cached_reg
.data
,
5410 register_size (target_gdbarch
,
5413 if (fieldsize
< register_size (target_gdbarch
,
5415 warning (_("Remote reply is too short: %s"), buf
);
5417 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5421 error (_("Remote register badly formatted: %s\nhere: %s"),
5426 case 'S': /* Old style status, just signal only. */
5427 if (event
->solibs_changed
)
5428 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5429 else if (event
->replay_event
)
5430 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5433 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5434 event
->ws
.value
.sig
= (enum gdb_signal
)
5435 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5438 case 'W': /* Target exited. */
5445 /* GDB used to accept only 2 hex chars here. Stubs should
5446 only send more if they detect GDB supports multi-process
5448 p
= unpack_varlen_hex (&buf
[1], &value
);
5452 /* The remote process exited. */
5453 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5454 event
->ws
.value
.integer
= value
;
5458 /* The remote process exited with a signal. */
5459 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5460 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5463 /* If no process is specified, assume inferior_ptid. */
5464 pid
= ptid_get_pid (inferior_ptid
);
5473 else if (strncmp (p
,
5474 "process:", sizeof ("process:") - 1) == 0)
5478 p
+= sizeof ("process:") - 1;
5479 unpack_varlen_hex (p
, &upid
);
5483 error (_("unknown stop reply packet: %s"), buf
);
5486 error (_("unknown stop reply packet: %s"), buf
);
5487 event
->ptid
= pid_to_ptid (pid
);
5492 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5493 error (_("No process or thread specified in stop reply: %s"), buf
);
5496 /* When the stub wants to tell GDB about a new stop reply, it sends a
5497 stop notification (%Stop). Those can come it at any time, hence,
5498 we have to make sure that any pending putpkt/getpkt sequence we're
5499 making is finished, before querying the stub for more events with
5500 vStopped. E.g., if we started a vStopped sequence immediatelly
5501 upon receiving the %Stop notification, something like this could
5509 1.6) <-- (registers reply to step #1.3)
5511 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5514 To solve this, whenever we parse a %Stop notification sucessfully,
5515 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5516 doing whatever we were doing:
5522 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5523 2.5) <-- (registers reply to step #2.3)
5525 Eventualy after step #2.5, we return to the event loop, which
5526 notices there's an event on the
5527 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5528 associated callback --- the function below. At this point, we're
5529 always safe to start a vStopped sequence. :
5532 2.7) <-- T05 thread:2
5538 remote_get_pending_stop_replies (void)
5540 struct remote_state
*rs
= get_remote_state ();
5542 if (pending_stop_reply
)
5545 putpkt ("vStopped");
5547 /* Now we can rely on it. */
5548 push_stop_reply (pending_stop_reply
);
5549 pending_stop_reply
= NULL
;
5553 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5554 if (strcmp (rs
->buf
, "OK") == 0)
5558 struct cleanup
*old_chain
;
5559 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5561 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5562 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5565 putpkt ("vStopped");
5567 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5569 /* Now we can rely on it. */
5570 discard_cleanups (old_chain
);
5571 push_stop_reply (stop_reply
);
5574 /* We got an unknown stop reply. */
5575 do_cleanups (old_chain
);
5582 /* Called when it is decided that STOP_REPLY holds the info of the
5583 event that is to be returned to the core. This function always
5584 destroys STOP_REPLY. */
5587 process_stop_reply (struct stop_reply
*stop_reply
,
5588 struct target_waitstatus
*status
)
5592 *status
= stop_reply
->ws
;
5593 ptid
= stop_reply
->ptid
;
5595 /* If no thread/process was reported by the stub, assume the current
5597 if (ptid_equal (ptid
, null_ptid
))
5598 ptid
= inferior_ptid
;
5600 if (status
->kind
!= TARGET_WAITKIND_EXITED
5601 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5603 /* Expedited registers. */
5604 if (stop_reply
->regcache
)
5606 struct regcache
*regcache
5607 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5612 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5614 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5615 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5618 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5619 remote_watch_data_address
= stop_reply
->watch_data_address
;
5621 remote_notice_new_inferior (ptid
, 0);
5622 demand_private_info (ptid
)->core
= stop_reply
->core
;
5625 stop_reply_xfree (stop_reply
);
5629 /* The non-stop mode version of target_wait. */
5632 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5634 struct remote_state
*rs
= get_remote_state ();
5635 struct stop_reply
*stop_reply
;
5638 /* If in non-stop mode, get out of getpkt even if a
5639 notification is received. */
5641 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5648 case 'E': /* Error of some sort. */
5649 /* We're out of sync with the target now. Did it continue
5650 or not? We can't tell which thread it was in non-stop,
5651 so just ignore this. */
5652 warning (_("Remote failure reply: %s"), rs
->buf
);
5654 case 'O': /* Console output. */
5655 remote_console_output (rs
->buf
+ 1);
5658 warning (_("Invalid remote reply: %s"), rs
->buf
);
5662 /* Acknowledge a pending stop reply that may have arrived in the
5664 if (pending_stop_reply
!= NULL
)
5665 remote_get_pending_stop_replies ();
5667 /* If indeed we noticed a stop reply, we're done. */
5668 stop_reply
= queued_stop_reply (ptid
);
5669 if (stop_reply
!= NULL
)
5670 return process_stop_reply (stop_reply
, status
);
5672 /* Still no event. If we're just polling for an event, then
5673 return to the event loop. */
5674 if (options
& TARGET_WNOHANG
)
5676 status
->kind
= TARGET_WAITKIND_IGNORE
;
5677 return minus_one_ptid
;
5680 /* Otherwise do a blocking wait. */
5681 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5686 /* Wait until the remote machine stops, then return, storing status in
5687 STATUS just as `wait' would. */
5690 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5692 struct remote_state
*rs
= get_remote_state ();
5693 ptid_t event_ptid
= null_ptid
;
5695 struct stop_reply
*stop_reply
;
5699 status
->kind
= TARGET_WAITKIND_IGNORE
;
5700 status
->value
.integer
= 0;
5702 stop_reply
= queued_stop_reply (ptid
);
5703 if (stop_reply
!= NULL
)
5704 return process_stop_reply (stop_reply
, status
);
5706 if (rs
->cached_wait_status
)
5707 /* Use the cached wait status, but only once. */
5708 rs
->cached_wait_status
= 0;
5713 if (!target_is_async_p ())
5715 ofunc
= signal (SIGINT
, remote_interrupt
);
5716 /* If the user hit C-c before this packet, or between packets,
5717 pretend that it was hit right here. */
5718 if (check_quit_flag ())
5721 remote_interrupt (SIGINT
);
5725 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5726 _never_ wait for ever -> test on target_is_async_p().
5727 However, before we do that we need to ensure that the caller
5728 knows how to take the target into/out of async mode. */
5729 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5730 if (!target_is_async_p ())
5731 signal (SIGINT
, ofunc
);
5736 remote_stopped_by_watchpoint_p
= 0;
5738 /* We got something. */
5739 rs
->waiting_for_stop_reply
= 0;
5741 /* Assume that the target has acknowledged Ctrl-C unless we receive
5742 an 'F' or 'O' packet. */
5743 if (buf
[0] != 'F' && buf
[0] != 'O')
5744 rs
->ctrlc_pending_p
= 0;
5748 case 'E': /* Error of some sort. */
5749 /* We're out of sync with the target now. Did it continue or
5750 not? Not is more likely, so report a stop. */
5751 warning (_("Remote failure reply: %s"), buf
);
5752 status
->kind
= TARGET_WAITKIND_STOPPED
;
5753 status
->value
.sig
= GDB_SIGNAL_0
;
5755 case 'F': /* File-I/O request. */
5756 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5757 rs
->ctrlc_pending_p
= 0;
5759 case 'T': case 'S': case 'X': case 'W':
5761 struct stop_reply
*stop_reply
;
5762 struct cleanup
*old_chain
;
5764 stop_reply
= stop_reply_xmalloc ();
5765 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5766 remote_parse_stop_reply (buf
, stop_reply
);
5767 discard_cleanups (old_chain
);
5768 event_ptid
= process_stop_reply (stop_reply
, status
);
5771 case 'O': /* Console output. */
5772 remote_console_output (buf
+ 1);
5774 /* The target didn't really stop; keep waiting. */
5775 rs
->waiting_for_stop_reply
= 1;
5779 if (last_sent_signal
!= GDB_SIGNAL_0
)
5781 /* Zero length reply means that we tried 'S' or 'C' and the
5782 remote system doesn't support it. */
5783 target_terminal_ours_for_output ();
5785 ("Can't send signals to this remote system. %s not sent.\n",
5786 gdb_signal_to_name (last_sent_signal
));
5787 last_sent_signal
= GDB_SIGNAL_0
;
5788 target_terminal_inferior ();
5790 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5791 putpkt ((char *) buf
);
5793 /* We just told the target to resume, so a stop reply is in
5795 rs
->waiting_for_stop_reply
= 1;
5798 /* else fallthrough */
5800 warning (_("Invalid remote reply: %s"), buf
);
5802 rs
->waiting_for_stop_reply
= 1;
5806 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5808 /* Nothing interesting happened. If we're doing a non-blocking
5809 poll, we're done. Otherwise, go back to waiting. */
5810 if (options
& TARGET_WNOHANG
)
5811 return minus_one_ptid
;
5815 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5816 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5818 if (!ptid_equal (event_ptid
, null_ptid
))
5819 record_currthread (event_ptid
);
5821 event_ptid
= inferior_ptid
;
5824 /* A process exit. Invalidate our notion of current thread. */
5825 record_currthread (minus_one_ptid
);
5830 /* Wait until the remote machine stops, then return, storing status in
5831 STATUS just as `wait' would. */
5834 remote_wait (struct target_ops
*ops
,
5835 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5840 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5842 event_ptid
= remote_wait_as (ptid
, status
, options
);
5844 if (target_can_async_p ())
5846 /* If there are are events left in the queue tell the event loop
5848 if (stop_reply_queue
)
5849 mark_async_event_handler (remote_async_inferior_event_token
);
5855 /* Fetch a single register using a 'p' packet. */
5858 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5860 struct remote_state
*rs
= get_remote_state ();
5862 char regp
[MAX_REGISTER_SIZE
];
5865 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5868 if (reg
->pnum
== -1)
5873 p
+= hexnumstr (p
, reg
->pnum
);
5876 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5880 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5884 case PACKET_UNKNOWN
:
5887 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5888 gdbarch_register_name (get_regcache_arch (regcache
),
5893 /* If this register is unfetchable, tell the regcache. */
5896 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5900 /* Otherwise, parse and supply the value. */
5906 error (_("fetch_register_using_p: early buf termination"));
5908 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5911 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5915 /* Fetch the registers included in the target's 'g' packet. */
5918 send_g_packet (void)
5920 struct remote_state
*rs
= get_remote_state ();
5923 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
5924 remote_send (&rs
->buf
, &rs
->buf_size
);
5926 /* We can get out of synch in various cases. If the first character
5927 in the buffer is not a hex character, assume that has happened
5928 and try to fetch another packet to read. */
5929 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5930 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5931 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5932 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5935 fprintf_unfiltered (gdb_stdlog
,
5936 "Bad register packet; fetching a new packet\n");
5937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5940 buf_len
= strlen (rs
->buf
);
5942 /* Sanity check the received packet. */
5943 if (buf_len
% 2 != 0)
5944 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5950 process_g_packet (struct regcache
*regcache
)
5952 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5953 struct remote_state
*rs
= get_remote_state ();
5954 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5959 buf_len
= strlen (rs
->buf
);
5961 /* Further sanity checks, with knowledge of the architecture. */
5962 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5963 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5965 /* Save the size of the packet sent to us by the target. It is used
5966 as a heuristic when determining the max size of packets that the
5967 target can safely receive. */
5968 if (rsa
->actual_register_packet_size
== 0)
5969 rsa
->actual_register_packet_size
= buf_len
;
5971 /* If this is smaller than we guessed the 'g' packet would be,
5972 update our records. A 'g' reply that doesn't include a register's
5973 value implies either that the register is not available, or that
5974 the 'p' packet must be used. */
5975 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5977 rsa
->sizeof_g_packet
= buf_len
/ 2;
5979 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5981 if (rsa
->regs
[i
].pnum
== -1)
5984 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5985 rsa
->regs
[i
].in_g_packet
= 0;
5987 rsa
->regs
[i
].in_g_packet
= 1;
5991 regs
= alloca (rsa
->sizeof_g_packet
);
5993 /* Unimplemented registers read as all bits zero. */
5994 memset (regs
, 0, rsa
->sizeof_g_packet
);
5996 /* Reply describes registers byte by byte, each byte encoded as two
5997 hex characters. Suck them all up, then supply them to the
5998 register cacheing/storage mechanism. */
6001 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6003 if (p
[0] == 0 || p
[1] == 0)
6004 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6005 internal_error (__FILE__
, __LINE__
,
6006 _("unexpected end of 'g' packet reply"));
6008 if (p
[0] == 'x' && p
[1] == 'x')
6009 regs
[i
] = 0; /* 'x' */
6011 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6015 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6017 struct packet_reg
*r
= &rsa
->regs
[i
];
6021 if (r
->offset
* 2 >= strlen (rs
->buf
))
6022 /* This shouldn't happen - we adjusted in_g_packet above. */
6023 internal_error (__FILE__
, __LINE__
,
6024 _("unexpected end of 'g' packet reply"));
6025 else if (rs
->buf
[r
->offset
* 2] == 'x')
6027 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6028 /* The register isn't available, mark it as such (at
6029 the same time setting the value to zero). */
6030 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6033 regcache_raw_supply (regcache
, r
->regnum
,
6040 fetch_registers_using_g (struct regcache
*regcache
)
6043 process_g_packet (regcache
);
6046 /* Make the remote selected traceframe match GDB's selected
6050 set_remote_traceframe (void)
6054 if (remote_traceframe_number
== get_traceframe_number ())
6057 /* Avoid recursion, remote_trace_find calls us again. */
6058 remote_traceframe_number
= get_traceframe_number ();
6060 newnum
= target_trace_find (tfind_number
,
6061 get_traceframe_number (), 0, 0, NULL
);
6063 /* Should not happen. If it does, all bets are off. */
6064 if (newnum
!= get_traceframe_number ())
6065 warning (_("could not set remote traceframe"));
6069 remote_fetch_registers (struct target_ops
*ops
,
6070 struct regcache
*regcache
, int regnum
)
6072 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6075 set_remote_traceframe ();
6076 set_general_thread (inferior_ptid
);
6080 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6082 gdb_assert (reg
!= NULL
);
6084 /* If this register might be in the 'g' packet, try that first -
6085 we are likely to read more than one register. If this is the
6086 first 'g' packet, we might be overly optimistic about its
6087 contents, so fall back to 'p'. */
6088 if (reg
->in_g_packet
)
6090 fetch_registers_using_g (regcache
);
6091 if (reg
->in_g_packet
)
6095 if (fetch_register_using_p (regcache
, reg
))
6098 /* This register is not available. */
6099 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6104 fetch_registers_using_g (regcache
);
6106 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6107 if (!rsa
->regs
[i
].in_g_packet
)
6108 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6110 /* This register is not available. */
6111 regcache_raw_supply (regcache
, i
, NULL
);
6115 /* Prepare to store registers. Since we may send them all (using a
6116 'G' request), we have to read out the ones we don't want to change
6120 remote_prepare_to_store (struct regcache
*regcache
)
6122 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6124 gdb_byte buf
[MAX_REGISTER_SIZE
];
6126 /* Make sure the entire registers array is valid. */
6127 switch (remote_protocol_packets
[PACKET_P
].support
)
6129 case PACKET_DISABLE
:
6130 case PACKET_SUPPORT_UNKNOWN
:
6131 /* Make sure all the necessary registers are cached. */
6132 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6133 if (rsa
->regs
[i
].in_g_packet
)
6134 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6141 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6142 packet was not recognized. */
6145 store_register_using_P (const struct regcache
*regcache
,
6146 struct packet_reg
*reg
)
6148 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6149 struct remote_state
*rs
= get_remote_state ();
6150 /* Try storing a single register. */
6151 char *buf
= rs
->buf
;
6152 gdb_byte regp
[MAX_REGISTER_SIZE
];
6155 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6158 if (reg
->pnum
== -1)
6161 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6162 p
= buf
+ strlen (buf
);
6163 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6164 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6166 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6168 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6173 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6174 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6175 case PACKET_UNKNOWN
:
6178 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6182 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6183 contents of the register cache buffer. FIXME: ignores errors. */
6186 store_registers_using_G (const struct regcache
*regcache
)
6188 struct remote_state
*rs
= get_remote_state ();
6189 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6193 /* Extract all the registers in the regcache copying them into a
6198 regs
= alloca (rsa
->sizeof_g_packet
);
6199 memset (regs
, 0, rsa
->sizeof_g_packet
);
6200 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6202 struct packet_reg
*r
= &rsa
->regs
[i
];
6205 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6209 /* Command describes registers byte by byte,
6210 each byte encoded as two hex characters. */
6213 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6215 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6217 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6218 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6219 error (_("Could not write registers; remote failure reply '%s'"),
6223 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6224 of the register cache buffer. FIXME: ignores errors. */
6227 remote_store_registers (struct target_ops
*ops
,
6228 struct regcache
*regcache
, int regnum
)
6230 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6233 set_remote_traceframe ();
6234 set_general_thread (inferior_ptid
);
6238 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6240 gdb_assert (reg
!= NULL
);
6242 /* Always prefer to store registers using the 'P' packet if
6243 possible; we often change only a small number of registers.
6244 Sometimes we change a larger number; we'd need help from a
6245 higher layer to know to use 'G'. */
6246 if (store_register_using_P (regcache
, reg
))
6249 /* For now, don't complain if we have no way to write the
6250 register. GDB loses track of unavailable registers too
6251 easily. Some day, this may be an error. We don't have
6252 any way to read the register, either... */
6253 if (!reg
->in_g_packet
)
6256 store_registers_using_G (regcache
);
6260 store_registers_using_G (regcache
);
6262 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6263 if (!rsa
->regs
[i
].in_g_packet
)
6264 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6265 /* See above for why we do not issue an error here. */
6270 /* Return the number of hex digits in num. */
6273 hexnumlen (ULONGEST num
)
6277 for (i
= 0; num
!= 0; i
++)
6283 /* Set BUF to the minimum number of hex digits representing NUM. */
6286 hexnumstr (char *buf
, ULONGEST num
)
6288 int len
= hexnumlen (num
);
6290 return hexnumnstr (buf
, num
, len
);
6294 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6297 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6303 for (i
= width
- 1; i
>= 0; i
--)
6305 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6312 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6315 remote_address_masked (CORE_ADDR addr
)
6317 unsigned int address_size
= remote_address_size
;
6319 /* If "remoteaddresssize" was not set, default to target address size. */
6321 address_size
= gdbarch_addr_bit (target_gdbarch
);
6323 if (address_size
> 0
6324 && address_size
< (sizeof (ULONGEST
) * 8))
6326 /* Only create a mask when that mask can safely be constructed
6327 in a ULONGEST variable. */
6330 mask
= (mask
<< address_size
) - 1;
6336 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6337 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6338 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6339 (which may be more than *OUT_LEN due to escape characters). The
6340 total number of bytes in the output buffer will be at most
6344 remote_escape_output (const gdb_byte
*buffer
, int len
,
6345 gdb_byte
*out_buf
, int *out_len
,
6348 int input_index
, output_index
;
6351 for (input_index
= 0; input_index
< len
; input_index
++)
6353 gdb_byte b
= buffer
[input_index
];
6355 if (b
== '$' || b
== '#' || b
== '}')
6357 /* These must be escaped. */
6358 if (output_index
+ 2 > out_maxlen
)
6360 out_buf
[output_index
++] = '}';
6361 out_buf
[output_index
++] = b
^ 0x20;
6365 if (output_index
+ 1 > out_maxlen
)
6367 out_buf
[output_index
++] = b
;
6371 *out_len
= input_index
;
6372 return output_index
;
6375 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6376 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6377 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6379 This function reverses remote_escape_output. It allows more
6380 escaped characters than that function does, in particular because
6381 '*' must be escaped to avoid the run-length encoding processing
6382 in reading packets. */
6385 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6386 gdb_byte
*out_buf
, int out_maxlen
)
6388 int input_index
, output_index
;
6393 for (input_index
= 0; input_index
< len
; input_index
++)
6395 gdb_byte b
= buffer
[input_index
];
6397 if (output_index
+ 1 > out_maxlen
)
6399 warning (_("Received too much data from remote target;"
6400 " ignoring overflow."));
6401 return output_index
;
6406 out_buf
[output_index
++] = b
^ 0x20;
6412 out_buf
[output_index
++] = b
;
6416 error (_("Unmatched escape character in target response."));
6418 return output_index
;
6421 /* Determine whether the remote target supports binary downloading.
6422 This is accomplished by sending a no-op memory write of zero length
6423 to the target at the specified address. It does not suffice to send
6424 the whole packet, since many stubs strip the eighth bit and
6425 subsequently compute a wrong checksum, which causes real havoc with
6428 NOTE: This can still lose if the serial line is not eight-bit
6429 clean. In cases like this, the user should clear "remote
6433 check_binary_download (CORE_ADDR addr
)
6435 struct remote_state
*rs
= get_remote_state ();
6437 switch (remote_protocol_packets
[PACKET_X
].support
)
6439 case PACKET_DISABLE
:
6443 case PACKET_SUPPORT_UNKNOWN
:
6449 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6451 p
+= hexnumstr (p
, (ULONGEST
) 0);
6455 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6456 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6458 if (rs
->buf
[0] == '\0')
6461 fprintf_unfiltered (gdb_stdlog
,
6462 "binary downloading NOT "
6463 "supported by target\n");
6464 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6469 fprintf_unfiltered (gdb_stdlog
,
6470 "binary downloading supported by target\n");
6471 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6478 /* Write memory data directly to the remote machine.
6479 This does not inform the data cache; the data cache uses this.
6480 HEADER is the starting part of the packet.
6481 MEMADDR is the address in the remote memory space.
6482 MYADDR is the address of the buffer in our space.
6483 LEN is the number of bytes.
6484 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6485 should send data as binary ('X'), or hex-encoded ('M').
6487 The function creates packet of the form
6488 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6490 where encoding of <DATA> is termined by PACKET_FORMAT.
6492 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6495 Returns the number of bytes transferred, or 0 (setting errno) for
6496 error. Only transfer a single packet. */
6499 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6500 const gdb_byte
*myaddr
, ssize_t len
,
6501 char packet_format
, int use_length
)
6503 struct remote_state
*rs
= get_remote_state ();
6513 if (packet_format
!= 'X' && packet_format
!= 'M')
6514 internal_error (__FILE__
, __LINE__
,
6515 _("remote_write_bytes_aux: bad packet format"));
6520 payload_size
= get_memory_write_packet_size ();
6522 /* The packet buffer will be large enough for the payload;
6523 get_memory_packet_size ensures this. */
6526 /* Compute the size of the actual payload by subtracting out the
6527 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6529 payload_size
-= strlen ("$,:#NN");
6531 /* The comma won't be used. */
6533 header_length
= strlen (header
);
6534 payload_size
-= header_length
;
6535 payload_size
-= hexnumlen (memaddr
);
6537 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6539 strcat (rs
->buf
, header
);
6540 p
= rs
->buf
+ strlen (header
);
6542 /* Compute a best guess of the number of bytes actually transfered. */
6543 if (packet_format
== 'X')
6545 /* Best guess at number of bytes that will fit. */
6546 todo
= min (len
, payload_size
);
6548 payload_size
-= hexnumlen (todo
);
6549 todo
= min (todo
, payload_size
);
6553 /* Num bytes that will fit. */
6554 todo
= min (len
, payload_size
/ 2);
6556 payload_size
-= hexnumlen (todo
);
6557 todo
= min (todo
, payload_size
/ 2);
6561 internal_error (__FILE__
, __LINE__
,
6562 _("minimum packet size too small to write data"));
6564 /* If we already need another packet, then try to align the end
6565 of this packet to a useful boundary. */
6566 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6567 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6569 /* Append "<memaddr>". */
6570 memaddr
= remote_address_masked (memaddr
);
6571 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6578 /* Append <len>. Retain the location/size of <len>. It may need to
6579 be adjusted once the packet body has been created. */
6581 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6589 /* Append the packet body. */
6590 if (packet_format
== 'X')
6592 /* Binary mode. Send target system values byte by byte, in
6593 increasing byte addresses. Only escape certain critical
6595 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6598 /* If not all TODO bytes fit, then we'll need another packet. Make
6599 a second try to keep the end of the packet aligned. Don't do
6600 this if the packet is tiny. */
6601 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6605 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6607 if (new_nr_bytes
!= nr_bytes
)
6608 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6613 p
+= payload_length
;
6614 if (use_length
&& nr_bytes
< todo
)
6616 /* Escape chars have filled up the buffer prematurely,
6617 and we have actually sent fewer bytes than planned.
6618 Fix-up the length field of the packet. Use the same
6619 number of characters as before. */
6620 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6621 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6626 /* Normal mode: Send target system values byte by byte, in
6627 increasing byte addresses. Each byte is encoded as a two hex
6629 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6633 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6634 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6636 if (rs
->buf
[0] == 'E')
6638 /* There is no correspondance between what the remote protocol
6639 uses for errors and errno codes. We would like a cleaner way
6640 of representing errors (big enough to include errno codes,
6641 bfd_error codes, and others). But for now just return EIO. */
6646 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6647 fewer bytes than we'd planned. */
6651 /* Write memory data directly to the remote machine.
6652 This does not inform the data cache; the data cache uses this.
6653 MEMADDR is the address in the remote memory space.
6654 MYADDR is the address of the buffer in our space.
6655 LEN is the number of bytes.
6657 Returns number of bytes transferred, or 0 (setting errno) for
6658 error. Only transfer a single packet. */
6661 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6663 char *packet_format
= 0;
6665 /* Check whether the target supports binary download. */
6666 check_binary_download (memaddr
);
6668 switch (remote_protocol_packets
[PACKET_X
].support
)
6671 packet_format
= "X";
6673 case PACKET_DISABLE
:
6674 packet_format
= "M";
6676 case PACKET_SUPPORT_UNKNOWN
:
6677 internal_error (__FILE__
, __LINE__
,
6678 _("remote_write_bytes: bad internal state"));
6680 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6683 return remote_write_bytes_aux (packet_format
,
6684 memaddr
, myaddr
, len
, packet_format
[0], 1);
6687 /* Read memory data directly from the remote machine.
6688 This does not use the data cache; the data cache uses this.
6689 MEMADDR is the address in the remote memory space.
6690 MYADDR is the address of the buffer in our space.
6691 LEN is the number of bytes.
6693 Returns number of bytes transferred, or 0 for error. */
6696 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6698 struct remote_state
*rs
= get_remote_state ();
6699 int max_buf_size
; /* Max size of packet output buffer. */
6707 max_buf_size
= get_memory_read_packet_size ();
6708 /* The packet buffer will be large enough for the payload;
6709 get_memory_packet_size ensures this. */
6711 /* Number if bytes that will fit. */
6712 todo
= min (len
, max_buf_size
/ 2);
6714 /* Construct "m"<memaddr>","<len>". */
6715 memaddr
= remote_address_masked (memaddr
);
6718 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6720 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6723 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6724 if (rs
->buf
[0] == 'E'
6725 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6726 && rs
->buf
[3] == '\0')
6728 /* There is no correspondance between what the remote protocol
6729 uses for errors and errno codes. We would like a cleaner way
6730 of representing errors (big enough to include errno codes,
6731 bfd_error codes, and others). But for now just return
6736 /* Reply describes memory byte by byte, each byte encoded as two hex
6739 i
= hex2bin (p
, myaddr
, todo
);
6740 /* Return what we have. Let higher layers handle partial reads. */
6745 /* Remote notification handler. */
6748 handle_notification (char *buf
)
6750 if (strncmp (buf
, "Stop:", 5) == 0)
6752 if (pending_stop_reply
)
6754 /* We've already parsed the in-flight stop-reply, but the
6755 stub for some reason thought we didn't, possibly due to
6756 timeout on its side. Just ignore it. */
6758 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6762 struct cleanup
*old_chain
;
6763 struct stop_reply
*reply
= stop_reply_xmalloc ();
6765 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6767 remote_parse_stop_reply (buf
+ 5, reply
);
6769 discard_cleanups (old_chain
);
6771 /* Be careful to only set it after parsing, since an error
6772 may be thrown then. */
6773 pending_stop_reply
= reply
;
6775 /* Notify the event loop there's a stop reply to acknowledge
6776 and that there may be more events to fetch. */
6777 mark_async_event_handler (remote_async_get_pending_events_token
);
6780 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6785 /* We ignore notifications we don't recognize, for compatibility
6786 with newer stubs. */
6791 /* Read or write LEN bytes from inferior memory at MEMADDR,
6792 transferring to or from debugger address BUFFER. Write to inferior
6793 if SHOULD_WRITE is nonzero. Returns length of data written or
6794 read; 0 for error. TARGET is unused. */
6797 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6798 int should_write
, struct mem_attrib
*attrib
,
6799 struct target_ops
*target
)
6803 set_remote_traceframe ();
6804 set_general_thread (inferior_ptid
);
6807 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6809 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6814 /* Sends a packet with content determined by the printf format string
6815 FORMAT and the remaining arguments, then gets the reply. Returns
6816 whether the packet was a success, a failure, or unknown. */
6818 static enum packet_result
6819 remote_send_printf (const char *format
, ...)
6821 struct remote_state
*rs
= get_remote_state ();
6822 int max_size
= get_remote_packet_size ();
6825 va_start (ap
, format
);
6828 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6829 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6831 if (putpkt (rs
->buf
) < 0)
6832 error (_("Communication problem with target."));
6835 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6837 return packet_check_result (rs
->buf
);
6841 restore_remote_timeout (void *p
)
6843 int value
= *(int *)p
;
6845 remote_timeout
= value
;
6848 /* Flash writing can take quite some time. We'll set
6849 effectively infinite timeout for flash operations.
6850 In future, we'll need to decide on a better approach. */
6851 static const int remote_flash_timeout
= 1000;
6854 remote_flash_erase (struct target_ops
*ops
,
6855 ULONGEST address
, LONGEST length
)
6857 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6858 int saved_remote_timeout
= remote_timeout
;
6859 enum packet_result ret
;
6860 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6861 &saved_remote_timeout
);
6863 remote_timeout
= remote_flash_timeout
;
6865 ret
= remote_send_printf ("vFlashErase:%s,%s",
6866 phex (address
, addr_size
),
6870 case PACKET_UNKNOWN
:
6871 error (_("Remote target does not support flash erase"));
6873 error (_("Error erasing flash with vFlashErase packet"));
6878 do_cleanups (back_to
);
6882 remote_flash_write (struct target_ops
*ops
,
6883 ULONGEST address
, LONGEST length
,
6884 const gdb_byte
*data
)
6886 int saved_remote_timeout
= remote_timeout
;
6888 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6889 &saved_remote_timeout
);
6891 remote_timeout
= remote_flash_timeout
;
6892 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6893 do_cleanups (back_to
);
6899 remote_flash_done (struct target_ops
*ops
)
6901 int saved_remote_timeout
= remote_timeout
;
6903 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6904 &saved_remote_timeout
);
6906 remote_timeout
= remote_flash_timeout
;
6907 ret
= remote_send_printf ("vFlashDone");
6908 do_cleanups (back_to
);
6912 case PACKET_UNKNOWN
:
6913 error (_("Remote target does not support vFlashDone"));
6915 error (_("Error finishing flash operation"));
6922 remote_files_info (struct target_ops
*ignore
)
6924 puts_filtered ("Debugging a target over a serial line.\n");
6927 /* Stuff for dealing with the packets which are part of this protocol.
6928 See comment at top of file for details. */
6930 /* Read a single character from the remote end. */
6933 readchar (int timeout
)
6937 ch
= serial_readchar (remote_desc
, timeout
);
6942 switch ((enum serial_rc
) ch
)
6946 error (_("Remote connection closed"));
6950 perror_with_name (_("Remote communication error. "
6951 "Target disconnected."));
6953 case SERIAL_TIMEOUT
:
6959 /* Send the command in *BUF to the remote machine, and read the reply
6960 into *BUF. Report an error if we get an error reply. Resize
6961 *BUF using xrealloc if necessary to hold the result, and update
6965 remote_send (char **buf
,
6969 getpkt (buf
, sizeof_buf
, 0);
6971 if ((*buf
)[0] == 'E')
6972 error (_("Remote failure reply: %s"), *buf
);
6975 /* Return a pointer to an xmalloc'ed string representing an escaped
6976 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6977 etc. The caller is responsible for releasing the returned
6981 escape_buffer (const char *buf
, int n
)
6983 struct cleanup
*old_chain
;
6984 struct ui_file
*stb
;
6987 stb
= mem_fileopen ();
6988 old_chain
= make_cleanup_ui_file_delete (stb
);
6990 fputstrn_unfiltered (buf
, n
, 0, stb
);
6991 str
= ui_file_xstrdup (stb
, NULL
);
6992 do_cleanups (old_chain
);
6996 /* Display a null-terminated packet on stdout, for debugging, using C
7000 print_packet (char *buf
)
7002 puts_filtered ("\"");
7003 fputstr_filtered (buf
, '"', gdb_stdout
);
7004 puts_filtered ("\"");
7010 return putpkt_binary (buf
, strlen (buf
));
7013 /* Send a packet to the remote machine, with error checking. The data
7014 of the packet is in BUF. The string in BUF can be at most
7015 get_remote_packet_size () - 5 to account for the $, # and checksum,
7016 and for a possible /0 if we are debugging (remote_debug) and want
7017 to print the sent packet as a string. */
7020 putpkt_binary (char *buf
, int cnt
)
7022 struct remote_state
*rs
= get_remote_state ();
7024 unsigned char csum
= 0;
7025 char *buf2
= alloca (cnt
+ 6);
7032 /* Catch cases like trying to read memory or listing threads while
7033 we're waiting for a stop reply. The remote server wouldn't be
7034 ready to handle this request, so we'd hang and timeout. We don't
7035 have to worry about this in synchronous mode, because in that
7036 case it's not possible to issue a command while the target is
7037 running. This is not a problem in non-stop mode, because in that
7038 case, the stub is always ready to process serial input. */
7039 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7040 error (_("Cannot execute this command while the target is running."));
7042 /* We're sending out a new packet. Make sure we don't look at a
7043 stale cached response. */
7044 rs
->cached_wait_status
= 0;
7046 /* Copy the packet into buffer BUF2, encapsulating it
7047 and giving it a checksum. */
7052 for (i
= 0; i
< cnt
; i
++)
7058 *p
++ = tohex ((csum
>> 4) & 0xf);
7059 *p
++ = tohex (csum
& 0xf);
7061 /* Send it over and over until we get a positive ack. */
7065 int started_error_output
= 0;
7069 struct cleanup
*old_chain
;
7073 str
= escape_buffer (buf2
, p
- buf2
);
7074 old_chain
= make_cleanup (xfree
, str
);
7075 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7076 gdb_flush (gdb_stdlog
);
7077 do_cleanups (old_chain
);
7079 if (serial_write (remote_desc
, buf2
, p
- buf2
))
7080 perror_with_name (_("putpkt: write failed"));
7082 /* If this is a no acks version of the remote protocol, send the
7083 packet and move on. */
7087 /* Read until either a timeout occurs (-2) or '+' is read.
7088 Handle any notification that arrives in the mean time. */
7091 ch
= readchar (remote_timeout
);
7099 case SERIAL_TIMEOUT
:
7102 if (started_error_output
)
7104 putchar_unfiltered ('\n');
7105 started_error_output
= 0;
7114 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7118 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7120 case SERIAL_TIMEOUT
:
7124 break; /* Retransmit buffer. */
7128 fprintf_unfiltered (gdb_stdlog
,
7129 "Packet instead of Ack, ignoring it\n");
7130 /* It's probably an old response sent because an ACK
7131 was lost. Gobble up the packet and ack it so it
7132 doesn't get retransmitted when we resend this
7135 serial_write (remote_desc
, "+", 1);
7136 continue; /* Now, go look for +. */
7143 /* If we got a notification, handle it, and go back to looking
7145 /* We've found the start of a notification. Now
7146 collect the data. */
7147 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7152 struct cleanup
*old_chain
;
7155 str
= escape_buffer (rs
->buf
, val
);
7156 old_chain
= make_cleanup (xfree
, str
);
7157 fprintf_unfiltered (gdb_stdlog
,
7158 " Notification received: %s\n",
7160 do_cleanups (old_chain
);
7162 handle_notification (rs
->buf
);
7163 /* We're in sync now, rewait for the ack. */
7170 if (!started_error_output
)
7172 started_error_output
= 1;
7173 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7175 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7176 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7185 if (!started_error_output
)
7187 started_error_output
= 1;
7188 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7190 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7194 break; /* Here to retransmit. */
7198 /* This is wrong. If doing a long backtrace, the user should be
7199 able to get out next time we call QUIT, without anything as
7200 violent as interrupt_query. If we want to provide a way out of
7201 here without getting to the next QUIT, it should be based on
7202 hitting ^C twice as in remote_wait. */
7213 /* Come here after finding the start of a frame when we expected an
7214 ack. Do our best to discard the rest of this packet. */
7223 c
= readchar (remote_timeout
);
7226 case SERIAL_TIMEOUT
:
7227 /* Nothing we can do. */
7230 /* Discard the two bytes of checksum and stop. */
7231 c
= readchar (remote_timeout
);
7233 c
= readchar (remote_timeout
);
7236 case '*': /* Run length encoding. */
7237 /* Discard the repeat count. */
7238 c
= readchar (remote_timeout
);
7243 /* A regular character. */
7249 /* Come here after finding the start of the frame. Collect the rest
7250 into *BUF, verifying the checksum, length, and handling run-length
7251 compression. NUL terminate the buffer. If there is not enough room,
7252 expand *BUF using xrealloc.
7254 Returns -1 on error, number of characters in buffer (ignoring the
7255 trailing NULL) on success. (could be extended to return one of the
7256 SERIAL status indications). */
7259 read_frame (char **buf_p
,
7266 struct remote_state
*rs
= get_remote_state ();
7273 c
= readchar (remote_timeout
);
7276 case SERIAL_TIMEOUT
:
7278 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7282 fputs_filtered ("Saw new packet start in middle of old one\n",
7284 return -1; /* Start a new packet, count retries. */
7287 unsigned char pktcsum
;
7293 check_0
= readchar (remote_timeout
);
7295 check_1
= readchar (remote_timeout
);
7297 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7300 fputs_filtered ("Timeout in checksum, retrying\n",
7304 else if (check_0
< 0 || check_1
< 0)
7307 fputs_filtered ("Communication error in checksum\n",
7312 /* Don't recompute the checksum; with no ack packets we
7313 don't have any way to indicate a packet retransmission
7318 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7319 if (csum
== pktcsum
)
7324 struct cleanup
*old_chain
;
7327 str
= escape_buffer (buf
, bc
);
7328 old_chain
= make_cleanup (xfree
, str
);
7329 fprintf_unfiltered (gdb_stdlog
,
7330 "Bad checksum, sentsum=0x%x, "
7331 "csum=0x%x, buf=%s\n",
7332 pktcsum
, csum
, str
);
7333 do_cleanups (old_chain
);
7335 /* Number of characters in buffer ignoring trailing
7339 case '*': /* Run length encoding. */
7344 c
= readchar (remote_timeout
);
7346 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7348 /* The character before ``*'' is repeated. */
7350 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7352 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7354 /* Make some more room in the buffer. */
7355 *sizeof_buf
+= repeat
;
7356 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7360 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7366 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7370 if (bc
>= *sizeof_buf
- 1)
7372 /* Make some more room in the buffer. */
7374 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7385 /* Read a packet from the remote machine, with error checking, and
7386 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7387 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7388 rather than timing out; this is used (in synchronous mode) to wait
7389 for a target that is is executing user code to stop. */
7390 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7391 don't have to change all the calls to getpkt to deal with the
7392 return value, because at the moment I don't know what the right
7393 thing to do it for those. */
7401 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7405 /* Read a packet from the remote machine, with error checking, and
7406 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7407 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7408 rather than timing out; this is used (in synchronous mode) to wait
7409 for a target that is is executing user code to stop. If FOREVER ==
7410 0, this function is allowed to time out gracefully and return an
7411 indication of this to the caller. Otherwise return the number of
7412 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7413 enough reason to return to the caller. */
7416 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7417 int expecting_notif
)
7419 struct remote_state
*rs
= get_remote_state ();
7425 /* We're reading a new response. Make sure we don't look at a
7426 previously cached response. */
7427 rs
->cached_wait_status
= 0;
7429 strcpy (*buf
, "timeout");
7432 timeout
= watchdog
> 0 ? watchdog
: -1;
7433 else if (expecting_notif
)
7434 timeout
= 0; /* There should already be a char in the buffer. If
7437 timeout
= remote_timeout
;
7441 /* Process any number of notifications, and then return when
7445 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7447 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7449 /* This can loop forever if the remote side sends us
7450 characters continuously, but if it pauses, we'll get
7451 SERIAL_TIMEOUT from readchar because of timeout. Then
7452 we'll count that as a retry.
7454 Note that even when forever is set, we will only wait
7455 forever prior to the start of a packet. After that, we
7456 expect characters to arrive at a brisk pace. They should
7457 show up within remote_timeout intervals. */
7459 c
= readchar (timeout
);
7460 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7462 if (c
== SERIAL_TIMEOUT
)
7464 if (expecting_notif
)
7465 return -1; /* Don't complain, it's normal to not get
7466 anything in this case. */
7468 if (forever
) /* Watchdog went off? Kill the target. */
7472 error (_("Watchdog timeout has expired. Target detached."));
7475 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7479 /* We've found the start of a packet or notification.
7480 Now collect the data. */
7481 val
= read_frame (buf
, sizeof_buf
);
7486 serial_write (remote_desc
, "-", 1);
7489 if (tries
> MAX_TRIES
)
7491 /* We have tried hard enough, and just can't receive the
7492 packet/notification. Give up. */
7493 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7495 /* Skip the ack char if we're in no-ack mode. */
7496 if (!rs
->noack_mode
)
7497 serial_write (remote_desc
, "+", 1);
7501 /* If we got an ordinary packet, return that to our caller. */
7506 struct cleanup
*old_chain
;
7509 str
= escape_buffer (*buf
, val
);
7510 old_chain
= make_cleanup (xfree
, str
);
7511 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7512 do_cleanups (old_chain
);
7515 /* Skip the ack char if we're in no-ack mode. */
7516 if (!rs
->noack_mode
)
7517 serial_write (remote_desc
, "+", 1);
7521 /* If we got a notification, handle it, and go back to looking
7525 gdb_assert (c
== '%');
7529 struct cleanup
*old_chain
;
7532 str
= escape_buffer (*buf
, val
);
7533 old_chain
= make_cleanup (xfree
, str
);
7534 fprintf_unfiltered (gdb_stdlog
,
7535 " Notification received: %s\n",
7537 do_cleanups (old_chain
);
7540 handle_notification (*buf
);
7542 /* Notifications require no acknowledgement. */
7544 if (expecting_notif
)
7551 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7553 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7557 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7559 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7563 /* A helper function that just calls putpkt; for type correctness. */
7566 putpkt_for_catch_errors (void *arg
)
7568 return putpkt (arg
);
7572 remote_kill (struct target_ops
*ops
)
7574 /* Use catch_errors so the user can quit from gdb even when we
7575 aren't on speaking terms with the remote system. */
7576 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7578 /* Don't wait for it to die. I'm not really sure it matters whether
7579 we do or not. For the existing stubs, kill is a noop. */
7580 target_mourn_inferior ();
7584 remote_vkill (int pid
, struct remote_state
*rs
)
7586 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7589 /* Tell the remote target to detach. */
7590 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7592 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7594 if (packet_ok (rs
->buf
,
7595 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7597 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7604 extended_remote_kill (struct target_ops
*ops
)
7607 int pid
= ptid_get_pid (inferior_ptid
);
7608 struct remote_state
*rs
= get_remote_state ();
7610 res
= remote_vkill (pid
, rs
);
7611 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7613 /* Don't try 'k' on a multi-process aware stub -- it has no way
7614 to specify the pid. */
7618 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7619 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7622 /* Don't wait for it to die. I'm not really sure it matters whether
7623 we do or not. For the existing stubs, kill is a noop. */
7629 error (_("Can't kill process"));
7631 target_mourn_inferior ();
7635 remote_mourn (struct target_ops
*ops
)
7637 remote_mourn_1 (ops
);
7640 /* Worker function for remote_mourn. */
7642 remote_mourn_1 (struct target_ops
*target
)
7644 unpush_target (target
);
7646 /* remote_close takes care of doing most of the clean up. */
7647 generic_mourn_inferior ();
7651 extended_remote_mourn_1 (struct target_ops
*target
)
7653 struct remote_state
*rs
= get_remote_state ();
7655 /* In case we got here due to an error, but we're going to stay
7657 rs
->waiting_for_stop_reply
= 0;
7659 /* We're no longer interested in these events. */
7660 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7662 /* If the current general thread belonged to the process we just
7663 detached from or has exited, the remote side current general
7664 thread becomes undefined. Considering a case like this:
7666 - We just got here due to a detach.
7667 - The process that we're detaching from happens to immediately
7668 report a global breakpoint being hit in non-stop mode, in the
7669 same thread we had selected before.
7670 - GDB attaches to this process again.
7671 - This event happens to be the next event we handle.
7673 GDB would consider that the current general thread didn't need to
7674 be set on the stub side (with Hg), since for all it knew,
7675 GENERAL_THREAD hadn't changed.
7677 Notice that although in all-stop mode, the remote server always
7678 sets the current thread to the thread reporting the stop event,
7679 that doesn't happen in non-stop mode; in non-stop, the stub *must
7680 not* change the current thread when reporting a breakpoint hit,
7681 due to the decoupling of event reporting and event handling.
7683 To keep things simple, we always invalidate our notion of the
7685 record_currthread (minus_one_ptid
);
7687 /* Unlike "target remote", we do not want to unpush the target; then
7688 the next time the user says "run", we won't be connected. */
7690 /* Call common code to mark the inferior as not running. */
7691 generic_mourn_inferior ();
7693 if (!have_inferiors ())
7695 if (!remote_multi_process_p (rs
))
7697 /* Check whether the target is running now - some remote stubs
7698 automatically restart after kill. */
7700 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7702 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7704 /* Assume that the target has been restarted. Set
7705 inferior_ptid so that bits of core GDB realizes
7706 there's something here, e.g., so that the user can
7707 say "kill" again. */
7708 inferior_ptid
= magic_null_ptid
;
7715 extended_remote_mourn (struct target_ops
*ops
)
7717 extended_remote_mourn_1 (ops
);
7721 extended_remote_supports_disable_randomization (void)
7723 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7728 extended_remote_disable_randomization (int val
)
7730 struct remote_state
*rs
= get_remote_state ();
7733 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7736 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7738 error (_("Target does not support QDisableRandomization."));
7739 if (strcmp (reply
, "OK") != 0)
7740 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7744 extended_remote_run (char *args
)
7746 struct remote_state
*rs
= get_remote_state ();
7749 /* If the user has disabled vRun support, or we have detected that
7750 support is not available, do not try it. */
7751 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7754 strcpy (rs
->buf
, "vRun;");
7755 len
= strlen (rs
->buf
);
7757 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7758 error (_("Remote file name too long for run packet"));
7759 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7761 gdb_assert (args
!= NULL
);
7764 struct cleanup
*back_to
;
7768 argv
= gdb_buildargv (args
);
7769 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7770 for (i
= 0; argv
[i
] != NULL
; i
++)
7772 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7773 error (_("Argument list too long for run packet"));
7774 rs
->buf
[len
++] = ';';
7775 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7777 do_cleanups (back_to
);
7780 rs
->buf
[len
++] = '\0';
7783 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7785 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7787 /* We have a wait response; we don't need it, though. All is well. */
7790 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7791 /* It wasn't disabled before, but it is now. */
7795 if (remote_exec_file
[0] == '\0')
7796 error (_("Running the default executable on the remote target failed; "
7797 "try \"set remote exec-file\"?"));
7799 error (_("Running \"%s\" on the remote target failed"),
7804 /* In the extended protocol we want to be able to do things like
7805 "run" and have them basically work as expected. So we need
7806 a special create_inferior function. We support changing the
7807 executable file and the command line arguments, but not the
7811 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7812 char **env
, int from_tty
)
7814 /* If running asynchronously, register the target file descriptor
7815 with the event loop. */
7816 if (target_can_async_p ())
7817 target_async (inferior_event_handler
, 0);
7819 /* Disable address space randomization if requested (and supported). */
7820 if (extended_remote_supports_disable_randomization ())
7821 extended_remote_disable_randomization (disable_randomization
);
7823 /* Now restart the remote server. */
7824 if (extended_remote_run (args
) == -1)
7826 /* vRun was not supported. Fail if we need it to do what the
7828 if (remote_exec_file
[0])
7829 error (_("Remote target does not support \"set remote exec-file\""));
7831 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7833 /* Fall back to "R". */
7834 extended_remote_restart ();
7837 if (!have_inferiors ())
7839 /* Clean up from the last time we ran, before we mark the target
7840 running again. This will mark breakpoints uninserted, and
7841 get_offsets may insert breakpoints. */
7842 init_thread_list ();
7843 init_wait_for_inferior ();
7846 add_current_inferior_and_thread ();
7848 /* Get updated offsets, if the stub uses qOffsets. */
7853 extended_remote_create_inferior (struct target_ops
*ops
,
7854 char *exec_file
, char *args
,
7855 char **env
, int from_tty
)
7857 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7861 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7862 the list of conditions (in agent expression bytecode format), if any, the
7863 target needs to evaluate. The output is placed into the packet buffer
7864 started from BUF and ended at BUF_END. */
7867 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7868 struct bp_target_info
*bp_tgt
, char *buf
,
7871 struct agent_expr
*aexpr
= NULL
;
7874 char *buf_start
= buf
;
7876 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7879 buf
+= strlen (buf
);
7880 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
7883 /* Send conditions to the target and free the vector. */
7885 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
7888 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
7889 buf
+= strlen (buf
);
7890 for (i
= 0; i
< aexpr
->len
; ++i
)
7891 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7895 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
7900 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
7901 struct bp_target_info
*bp_tgt
, char *buf
)
7903 struct agent_expr
*aexpr
= NULL
;
7906 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
7909 buf
+= strlen (buf
);
7911 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
7912 buf
+= strlen (buf
);
7914 /* Concatenate all the agent expressions that are commands into the
7917 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
7920 sprintf (buf
, "X%x,", aexpr
->len
);
7921 buf
+= strlen (buf
);
7922 for (i
= 0; i
< aexpr
->len
; ++i
)
7923 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7927 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
7930 /* Insert a breakpoint. On targets that have software breakpoint
7931 support, we ask the remote target to do the work; on targets
7932 which don't, we insert a traditional memory breakpoint. */
7935 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7936 struct bp_target_info
*bp_tgt
)
7938 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7939 If it succeeds, then set the support to PACKET_ENABLE. If it
7940 fails, and the user has explicitly requested the Z support then
7941 report an error, otherwise, mark it disabled and go on. */
7943 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7945 CORE_ADDR addr
= bp_tgt
->placed_address
;
7946 struct remote_state
*rs
;
7949 struct condition_list
*cond
= NULL
;
7951 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7953 rs
= get_remote_state ();
7955 endbuf
= rs
->buf
+ get_remote_packet_size ();
7960 addr
= (ULONGEST
) remote_address_masked (addr
);
7961 p
+= hexnumstr (p
, addr
);
7962 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
7964 if (remote_supports_cond_breakpoints ())
7965 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
7967 if (remote_can_run_breakpoint_commands ())
7968 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
7971 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7973 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7978 bp_tgt
->placed_address
= addr
;
7979 bp_tgt
->placed_size
= bpsize
;
7981 case PACKET_UNKNOWN
:
7986 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7990 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7991 struct bp_target_info
*bp_tgt
)
7993 CORE_ADDR addr
= bp_tgt
->placed_address
;
7994 struct remote_state
*rs
= get_remote_state ();
7996 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7999 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8005 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8006 p
+= hexnumstr (p
, addr
);
8007 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8010 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8012 return (rs
->buf
[0] == 'E');
8015 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8019 watchpoint_to_Z_packet (int type
)
8024 return Z_PACKET_WRITE_WP
;
8027 return Z_PACKET_READ_WP
;
8030 return Z_PACKET_ACCESS_WP
;
8033 internal_error (__FILE__
, __LINE__
,
8034 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8039 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8040 struct expression
*cond
)
8042 struct remote_state
*rs
= get_remote_state ();
8043 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8045 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8047 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8050 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8051 p
= strchr (rs
->buf
, '\0');
8052 addr
= remote_address_masked (addr
);
8053 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8054 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8057 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8059 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8063 case PACKET_UNKNOWN
:
8068 internal_error (__FILE__
, __LINE__
,
8069 _("remote_insert_watchpoint: reached end of function"));
8073 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8074 CORE_ADDR start
, int length
)
8076 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8078 return diff
< length
;
8083 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8084 struct expression
*cond
)
8086 struct remote_state
*rs
= get_remote_state ();
8087 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8089 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8091 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8094 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8095 p
= strchr (rs
->buf
, '\0');
8096 addr
= remote_address_masked (addr
);
8097 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8098 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8100 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8102 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8105 case PACKET_UNKNOWN
:
8110 internal_error (__FILE__
, __LINE__
,
8111 _("remote_remove_watchpoint: reached end of function"));
8115 int remote_hw_watchpoint_limit
= -1;
8116 int remote_hw_watchpoint_length_limit
= -1;
8117 int remote_hw_breakpoint_limit
= -1;
8120 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8122 if (remote_hw_watchpoint_length_limit
== 0)
8124 else if (remote_hw_watchpoint_length_limit
< 0)
8126 else if (len
<= remote_hw_watchpoint_length_limit
)
8133 remote_check_watch_resources (int type
, int cnt
, int ot
)
8135 if (type
== bp_hardware_breakpoint
)
8137 if (remote_hw_breakpoint_limit
== 0)
8139 else if (remote_hw_breakpoint_limit
< 0)
8141 else if (cnt
<= remote_hw_breakpoint_limit
)
8146 if (remote_hw_watchpoint_limit
== 0)
8148 else if (remote_hw_watchpoint_limit
< 0)
8152 else if (cnt
<= remote_hw_watchpoint_limit
)
8159 remote_stopped_by_watchpoint (void)
8161 return remote_stopped_by_watchpoint_p
;
8165 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8169 if (remote_stopped_by_watchpoint ())
8171 *addr_p
= remote_watch_data_address
;
8180 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8181 struct bp_target_info
*bp_tgt
)
8184 struct remote_state
*rs
;
8188 /* The length field should be set to the size of a breakpoint
8189 instruction, even though we aren't inserting one ourselves. */
8191 gdbarch_remote_breakpoint_from_pc
8192 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8194 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8197 rs
= get_remote_state ();
8199 endbuf
= rs
->buf
+ get_remote_packet_size ();
8205 addr
= remote_address_masked (bp_tgt
->placed_address
);
8206 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8207 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8209 if (remote_supports_cond_breakpoints ())
8210 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8212 if (remote_can_run_breakpoint_commands ())
8213 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8216 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8218 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8221 if (rs
->buf
[1] == '.')
8223 message
= strchr (rs
->buf
+ 2, '.');
8225 error (_("Remote failure reply: %s"), message
+ 1);
8228 case PACKET_UNKNOWN
:
8233 internal_error (__FILE__
, __LINE__
,
8234 _("remote_insert_hw_breakpoint: reached end of function"));
8239 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8240 struct bp_target_info
*bp_tgt
)
8243 struct remote_state
*rs
= get_remote_state ();
8245 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8247 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8254 addr
= remote_address_masked (bp_tgt
->placed_address
);
8255 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8256 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8259 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8261 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8264 case PACKET_UNKNOWN
:
8269 internal_error (__FILE__
, __LINE__
,
8270 _("remote_remove_hw_breakpoint: reached end of function"));
8273 /* Table used by the crc32 function to calcuate the checksum. */
8275 static unsigned long crc32_table
[256] =
8278 static unsigned long
8279 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8281 if (!crc32_table
[1])
8283 /* Initialize the CRC table and the decoding table. */
8287 for (i
= 0; i
< 256; i
++)
8289 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8290 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8297 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8303 /* Verify memory using the "qCRC:" request. */
8306 remote_verify_memory (struct target_ops
*ops
,
8307 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8309 struct remote_state
*rs
= get_remote_state ();
8310 unsigned long host_crc
, target_crc
;
8313 /* FIXME: assumes lma can fit into long. */
8314 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8315 (long) lma
, (long) size
);
8318 /* Be clever; compute the host_crc before waiting for target
8320 host_crc
= crc32 (data
, size
, 0xffffffff);
8322 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8323 if (rs
->buf
[0] == 'E')
8326 if (rs
->buf
[0] != 'C')
8327 error (_("remote target does not support this operation"));
8329 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8330 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8332 return (host_crc
== target_crc
);
8335 /* compare-sections command
8337 With no arguments, compares each loadable section in the exec bfd
8338 with the same memory range on the target, and reports mismatches.
8339 Useful for verifying the image on the target against the exec file. */
8342 compare_sections_command (char *args
, int from_tty
)
8345 struct cleanup
*old_chain
;
8347 const char *sectname
;
8355 error (_("command cannot be used without an exec file"));
8357 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8359 if (!(s
->flags
& SEC_LOAD
))
8360 continue; /* Skip non-loadable section. */
8362 size
= bfd_get_section_size (s
);
8364 continue; /* Skip zero-length section. */
8366 sectname
= bfd_get_section_name (exec_bfd
, s
);
8367 if (args
&& strcmp (args
, sectname
) != 0)
8368 continue; /* Not the section selected by user. */
8370 matched
= 1; /* Do this section. */
8373 sectdata
= xmalloc (size
);
8374 old_chain
= make_cleanup (xfree
, sectdata
);
8375 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8377 res
= target_verify_memory (sectdata
, lma
, size
);
8380 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8381 paddress (target_gdbarch
, lma
),
8382 paddress (target_gdbarch
, lma
+ size
));
8384 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8385 paddress (target_gdbarch
, lma
),
8386 paddress (target_gdbarch
, lma
+ size
));
8388 printf_filtered ("matched.\n");
8391 printf_filtered ("MIS-MATCHED!\n");
8395 do_cleanups (old_chain
);
8398 warning (_("One or more sections of the remote executable does not match\n\
8399 the loaded file\n"));
8400 if (args
&& !matched
)
8401 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8404 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8405 into remote target. The number of bytes written to the remote
8406 target is returned, or -1 for error. */
8409 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8410 const char *annex
, const gdb_byte
*writebuf
,
8411 ULONGEST offset
, LONGEST len
,
8412 struct packet_config
*packet
)
8416 struct remote_state
*rs
= get_remote_state ();
8417 int max_size
= get_memory_write_packet_size ();
8419 if (packet
->support
== PACKET_DISABLE
)
8422 /* Insert header. */
8423 i
= snprintf (rs
->buf
, max_size
,
8424 "qXfer:%s:write:%s:%s:",
8425 object_name
, annex
? annex
: "",
8426 phex_nz (offset
, sizeof offset
));
8427 max_size
-= (i
+ 1);
8429 /* Escape as much data as fits into rs->buf. */
8430 buf_len
= remote_escape_output
8431 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8433 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8434 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8435 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8438 unpack_varlen_hex (rs
->buf
, &n
);
8442 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8443 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8444 number of bytes read is returned, or 0 for EOF, or -1 for error.
8445 The number of bytes read may be less than LEN without indicating an
8446 EOF. PACKET is checked and updated to indicate whether the remote
8447 target supports this object. */
8450 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8452 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8453 struct packet_config
*packet
)
8455 static char *finished_object
;
8456 static char *finished_annex
;
8457 static ULONGEST finished_offset
;
8459 struct remote_state
*rs
= get_remote_state ();
8460 LONGEST i
, n
, packet_len
;
8462 if (packet
->support
== PACKET_DISABLE
)
8465 /* Check whether we've cached an end-of-object packet that matches
8467 if (finished_object
)
8469 if (strcmp (object_name
, finished_object
) == 0
8470 && strcmp (annex
? annex
: "", finished_annex
) == 0
8471 && offset
== finished_offset
)
8474 /* Otherwise, we're now reading something different. Discard
8476 xfree (finished_object
);
8477 xfree (finished_annex
);
8478 finished_object
= NULL
;
8479 finished_annex
= NULL
;
8482 /* Request only enough to fit in a single packet. The actual data
8483 may not, since we don't know how much of it will need to be escaped;
8484 the target is free to respond with slightly less data. We subtract
8485 five to account for the response type and the protocol frame. */
8486 n
= min (get_remote_packet_size () - 5, len
);
8487 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8488 object_name
, annex
? annex
: "",
8489 phex_nz (offset
, sizeof offset
),
8490 phex_nz (n
, sizeof n
));
8491 i
= putpkt (rs
->buf
);
8496 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8497 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8500 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8501 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8503 /* 'm' means there is (or at least might be) more data after this
8504 batch. That does not make sense unless there's at least one byte
8505 of data in this reply. */
8506 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8507 error (_("Remote qXfer reply contained no data."));
8509 /* Got some data. */
8510 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8512 /* 'l' is an EOF marker, possibly including a final block of data,
8513 or possibly empty. If we have the final block of a non-empty
8514 object, record this fact to bypass a subsequent partial read. */
8515 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8517 finished_object
= xstrdup (object_name
);
8518 finished_annex
= xstrdup (annex
? annex
: "");
8519 finished_offset
= offset
+ i
;
8526 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8527 const char *annex
, gdb_byte
*readbuf
,
8528 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8530 struct remote_state
*rs
;
8535 set_remote_traceframe ();
8536 set_general_thread (inferior_ptid
);
8538 rs
= get_remote_state ();
8540 /* Handle memory using the standard memory routines. */
8541 if (object
== TARGET_OBJECT_MEMORY
)
8547 /* If the remote target is connected but not running, we should
8548 pass this request down to a lower stratum (e.g. the executable
8550 if (!target_has_execution
)
8553 if (writebuf
!= NULL
)
8554 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8556 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8560 else if (xfered
== 0 && errno
== 0)
8566 /* Handle SPU memory using qxfer packets. */
8567 if (object
== TARGET_OBJECT_SPU
)
8570 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8571 &remote_protocol_packets
8572 [PACKET_qXfer_spu_read
]);
8574 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8575 &remote_protocol_packets
8576 [PACKET_qXfer_spu_write
]);
8579 /* Handle extra signal info using qxfer packets. */
8580 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8583 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8584 &remote_protocol_packets
8585 [PACKET_qXfer_siginfo_read
]);
8587 return remote_write_qxfer (ops
, "siginfo", annex
,
8588 writebuf
, offset
, len
,
8589 &remote_protocol_packets
8590 [PACKET_qXfer_siginfo_write
]);
8593 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8596 return remote_read_qxfer (ops
, "statictrace", annex
,
8597 readbuf
, offset
, len
,
8598 &remote_protocol_packets
8599 [PACKET_qXfer_statictrace_read
]);
8604 /* Only handle flash writes. */
8605 if (writebuf
!= NULL
)
8611 case TARGET_OBJECT_FLASH
:
8612 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8616 else if (xfered
== 0 && errno
== 0)
8626 /* Map pre-existing objects onto letters. DO NOT do this for new
8627 objects!!! Instead specify new query packets. */
8630 case TARGET_OBJECT_AVR
:
8634 case TARGET_OBJECT_AUXV
:
8635 gdb_assert (annex
== NULL
);
8636 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8637 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8639 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8640 return remote_read_qxfer
8641 (ops
, "features", annex
, readbuf
, offset
, len
,
8642 &remote_protocol_packets
[PACKET_qXfer_features
]);
8644 case TARGET_OBJECT_LIBRARIES
:
8645 return remote_read_qxfer
8646 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8647 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8649 case TARGET_OBJECT_LIBRARIES_SVR4
:
8650 return remote_read_qxfer
8651 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8652 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8654 case TARGET_OBJECT_MEMORY_MAP
:
8655 gdb_assert (annex
== NULL
);
8656 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8657 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8659 case TARGET_OBJECT_OSDATA
:
8660 /* Should only get here if we're connected. */
8661 gdb_assert (remote_desc
);
8662 return remote_read_qxfer
8663 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8664 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8666 case TARGET_OBJECT_THREADS
:
8667 gdb_assert (annex
== NULL
);
8668 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8669 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8671 case TARGET_OBJECT_TRACEFRAME_INFO
:
8672 gdb_assert (annex
== NULL
);
8673 return remote_read_qxfer
8674 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8675 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8677 case TARGET_OBJECT_FDPIC
:
8678 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8679 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8681 case TARGET_OBJECT_OPENVMS_UIB
:
8682 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8683 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8689 /* Note: a zero OFFSET and LEN can be used to query the minimum
8691 if (offset
== 0 && len
== 0)
8692 return (get_remote_packet_size ());
8693 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8694 large enough let the caller deal with it. */
8695 if (len
< get_remote_packet_size ())
8697 len
= get_remote_packet_size ();
8699 /* Except for querying the minimum buffer size, target must be open. */
8701 error (_("remote query is only available after target open"));
8703 gdb_assert (annex
!= NULL
);
8704 gdb_assert (readbuf
!= NULL
);
8710 /* We used one buffer char for the remote protocol q command and
8711 another for the query type. As the remote protocol encapsulation
8712 uses 4 chars plus one extra in case we are debugging
8713 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8716 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8718 /* Bad caller may have sent forbidden characters. */
8719 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8724 gdb_assert (annex
[i
] == '\0');
8726 i
= putpkt (rs
->buf
);
8730 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8731 strcpy ((char *) readbuf
, rs
->buf
);
8733 return strlen ((char *) readbuf
);
8737 remote_search_memory (struct target_ops
* ops
,
8738 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8739 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8740 CORE_ADDR
*found_addrp
)
8742 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8743 struct remote_state
*rs
= get_remote_state ();
8744 int max_size
= get_memory_write_packet_size ();
8745 struct packet_config
*packet
=
8746 &remote_protocol_packets
[PACKET_qSearch_memory
];
8747 /* Number of packet bytes used to encode the pattern;
8748 this could be more than PATTERN_LEN due to escape characters. */
8749 int escaped_pattern_len
;
8750 /* Amount of pattern that was encodable in the packet. */
8751 int used_pattern_len
;
8754 ULONGEST found_addr
;
8756 /* Don't go to the target if we don't have to.
8757 This is done before checking packet->support to avoid the possibility that
8758 a success for this edge case means the facility works in general. */
8759 if (pattern_len
> search_space_len
)
8761 if (pattern_len
== 0)
8763 *found_addrp
= start_addr
;
8767 /* If we already know the packet isn't supported, fall back to the simple
8768 way of searching memory. */
8770 if (packet
->support
== PACKET_DISABLE
)
8772 /* Target doesn't provided special support, fall back and use the
8773 standard support (copy memory and do the search here). */
8774 return simple_search_memory (ops
, start_addr
, search_space_len
,
8775 pattern
, pattern_len
, found_addrp
);
8778 /* Insert header. */
8779 i
= snprintf (rs
->buf
, max_size
,
8780 "qSearch:memory:%s;%s;",
8781 phex_nz (start_addr
, addr_size
),
8782 phex_nz (search_space_len
, sizeof (search_space_len
)));
8783 max_size
-= (i
+ 1);
8785 /* Escape as much data as fits into rs->buf. */
8786 escaped_pattern_len
=
8787 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8788 &used_pattern_len
, max_size
);
8790 /* Bail if the pattern is too large. */
8791 if (used_pattern_len
!= pattern_len
)
8792 error (_("Pattern is too large to transmit to remote target."));
8794 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8795 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8796 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8798 /* The request may not have worked because the command is not
8799 supported. If so, fall back to the simple way. */
8800 if (packet
->support
== PACKET_DISABLE
)
8802 return simple_search_memory (ops
, start_addr
, search_space_len
,
8803 pattern
, pattern_len
, found_addrp
);
8808 if (rs
->buf
[0] == '0')
8810 else if (rs
->buf
[0] == '1')
8813 if (rs
->buf
[1] != ',')
8814 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8815 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8816 *found_addrp
= found_addr
;
8819 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8825 remote_rcmd (char *command
,
8826 struct ui_file
*outbuf
)
8828 struct remote_state
*rs
= get_remote_state ();
8832 error (_("remote rcmd is only available after target open"));
8834 /* Send a NULL command across as an empty command. */
8835 if (command
== NULL
)
8838 /* The query prefix. */
8839 strcpy (rs
->buf
, "qRcmd,");
8840 p
= strchr (rs
->buf
, '\0');
8842 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8843 > get_remote_packet_size ())
8844 error (_("\"monitor\" command ``%s'' is too long."), command
);
8846 /* Encode the actual command. */
8847 bin2hex ((gdb_byte
*) command
, p
, 0);
8849 if (putpkt (rs
->buf
) < 0)
8850 error (_("Communication problem with target."));
8852 /* get/display the response */
8857 /* XXX - see also remote_get_noisy_reply(). */
8858 QUIT
; /* Allow user to bail out with ^C. */
8860 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8862 /* Timeout. Continue to (try to) read responses.
8863 This is better than stopping with an error, assuming the stub
8864 is still executing the (long) monitor command.
8865 If needed, the user can interrupt gdb using C-c, obtaining
8866 an effect similar to stop on timeout. */
8871 error (_("Target does not support this command."));
8872 if (buf
[0] == 'O' && buf
[1] != 'K')
8874 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8877 if (strcmp (buf
, "OK") == 0)
8879 if (strlen (buf
) == 3 && buf
[0] == 'E'
8880 && isdigit (buf
[1]) && isdigit (buf
[2]))
8882 error (_("Protocol error with Rcmd"));
8884 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8886 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8888 fputc_unfiltered (c
, outbuf
);
8894 static VEC(mem_region_s
) *
8895 remote_memory_map (struct target_ops
*ops
)
8897 VEC(mem_region_s
) *result
= NULL
;
8898 char *text
= target_read_stralloc (¤t_target
,
8899 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8903 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8905 result
= parse_memory_map (text
);
8906 do_cleanups (back_to
);
8913 packet_command (char *args
, int from_tty
)
8915 struct remote_state
*rs
= get_remote_state ();
8918 error (_("command can only be used with remote target"));
8921 error (_("remote-packet command requires packet text as argument"));
8923 puts_filtered ("sending: ");
8924 print_packet (args
);
8925 puts_filtered ("\n");
8928 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8929 puts_filtered ("received: ");
8930 print_packet (rs
->buf
);
8931 puts_filtered ("\n");
8935 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8937 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8939 static void threadset_test_cmd (char *cmd
, int tty
);
8941 static void threadalive_test (char *cmd
, int tty
);
8943 static void threadlist_test_cmd (char *cmd
, int tty
);
8945 int get_and_display_threadinfo (threadref
*ref
);
8947 static void threadinfo_test_cmd (char *cmd
, int tty
);
8949 static int thread_display_step (threadref
*ref
, void *context
);
8951 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8953 static void init_remote_threadtests (void);
8955 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8958 threadset_test_cmd (char *cmd
, int tty
)
8960 int sample_thread
= SAMPLE_THREAD
;
8962 printf_filtered (_("Remote threadset test\n"));
8963 set_general_thread (sample_thread
);
8968 threadalive_test (char *cmd
, int tty
)
8970 int sample_thread
= SAMPLE_THREAD
;
8971 int pid
= ptid_get_pid (inferior_ptid
);
8972 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8974 if (remote_thread_alive (ptid
))
8975 printf_filtered ("PASS: Thread alive test\n");
8977 printf_filtered ("FAIL: Thread alive test\n");
8980 void output_threadid (char *title
, threadref
*ref
);
8983 output_threadid (char *title
, threadref
*ref
)
8987 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8989 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8993 threadlist_test_cmd (char *cmd
, int tty
)
8996 threadref nextthread
;
8997 int done
, result_count
;
8998 threadref threadlist
[3];
9000 printf_filtered ("Remote Threadlist test\n");
9001 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9002 &result_count
, &threadlist
[0]))
9003 printf_filtered ("FAIL: threadlist test\n");
9006 threadref
*scan
= threadlist
;
9007 threadref
*limit
= scan
+ result_count
;
9009 while (scan
< limit
)
9010 output_threadid (" thread ", scan
++);
9015 display_thread_info (struct gdb_ext_thread_info
*info
)
9017 output_threadid ("Threadid: ", &info
->threadid
);
9018 printf_filtered ("Name: %s\n ", info
->shortname
);
9019 printf_filtered ("State: %s\n", info
->display
);
9020 printf_filtered ("other: %s\n\n", info
->more_display
);
9024 get_and_display_threadinfo (threadref
*ref
)
9028 struct gdb_ext_thread_info threadinfo
;
9030 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9031 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9032 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9033 display_thread_info (&threadinfo
);
9038 threadinfo_test_cmd (char *cmd
, int tty
)
9040 int athread
= SAMPLE_THREAD
;
9044 int_to_threadref (&thread
, athread
);
9045 printf_filtered ("Remote Threadinfo test\n");
9046 if (!get_and_display_threadinfo (&thread
))
9047 printf_filtered ("FAIL cannot get thread info\n");
9051 thread_display_step (threadref
*ref
, void *context
)
9053 /* output_threadid(" threadstep ",ref); *//* simple test */
9054 return get_and_display_threadinfo (ref
);
9058 threadlist_update_test_cmd (char *cmd
, int tty
)
9060 printf_filtered ("Remote Threadlist update test\n");
9061 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9065 init_remote_threadtests (void)
9067 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9068 _("Fetch and print the remote list of "
9069 "thread identifiers, one pkt only"));
9070 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9071 _("Fetch and display info about one thread"));
9072 add_com ("tset", class_obscure
, threadset_test_cmd
,
9073 _("Test setting to a different thread"));
9074 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9075 _("Iterate through updating all remote thread info"));
9076 add_com ("talive", class_obscure
, threadalive_test
,
9077 _(" Remote thread alive test "));
9082 /* Convert a thread ID to a string. Returns the string in a static
9086 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9088 static char buf
[64];
9089 struct remote_state
*rs
= get_remote_state ();
9091 if (ptid_equal (ptid
, null_ptid
))
9092 return normal_pid_to_str (ptid
);
9093 else if (ptid_is_pid (ptid
))
9095 /* Printing an inferior target id. */
9097 /* When multi-process extensions are off, there's no way in the
9098 remote protocol to know the remote process id, if there's any
9099 at all. There's one exception --- when we're connected with
9100 target extended-remote, and we manually attached to a process
9101 with "attach PID". We don't record anywhere a flag that
9102 allows us to distinguish that case from the case of
9103 connecting with extended-remote and the stub already being
9104 attached to a process, and reporting yes to qAttached, hence
9105 no smart special casing here. */
9106 if (!remote_multi_process_p (rs
))
9108 xsnprintf (buf
, sizeof buf
, "Remote target");
9112 return normal_pid_to_str (ptid
);
9116 if (ptid_equal (magic_null_ptid
, ptid
))
9117 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9118 else if (rs
->extended
&& remote_multi_process_p (rs
))
9119 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9120 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9122 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9123 ptid_get_tid (ptid
));
9128 /* Get the address of the thread local variable in OBJFILE which is
9129 stored at OFFSET within the thread local storage for thread PTID. */
9132 remote_get_thread_local_address (struct target_ops
*ops
,
9133 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9135 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9137 struct remote_state
*rs
= get_remote_state ();
9139 char *endp
= rs
->buf
+ get_remote_packet_size ();
9140 enum packet_result result
;
9142 strcpy (p
, "qGetTLSAddr:");
9144 p
= write_ptid (p
, endp
, ptid
);
9146 p
+= hexnumstr (p
, offset
);
9148 p
+= hexnumstr (p
, lm
);
9152 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9153 result
= packet_ok (rs
->buf
,
9154 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9155 if (result
== PACKET_OK
)
9159 unpack_varlen_hex (rs
->buf
, &result
);
9162 else if (result
== PACKET_UNKNOWN
)
9163 throw_error (TLS_GENERIC_ERROR
,
9164 _("Remote target doesn't support qGetTLSAddr packet"));
9166 throw_error (TLS_GENERIC_ERROR
,
9167 _("Remote target failed to process qGetTLSAddr request"));
9170 throw_error (TLS_GENERIC_ERROR
,
9171 _("TLS not supported or disabled on this target"));
9176 /* Provide thread local base, i.e. Thread Information Block address.
9177 Returns 1 if ptid is found and thread_local_base is non zero. */
9180 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9182 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9184 struct remote_state
*rs
= get_remote_state ();
9186 char *endp
= rs
->buf
+ get_remote_packet_size ();
9187 enum packet_result result
;
9189 strcpy (p
, "qGetTIBAddr:");
9191 p
= write_ptid (p
, endp
, ptid
);
9195 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9196 result
= packet_ok (rs
->buf
,
9197 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9198 if (result
== PACKET_OK
)
9202 unpack_varlen_hex (rs
->buf
, &result
);
9204 *addr
= (CORE_ADDR
) result
;
9207 else if (result
== PACKET_UNKNOWN
)
9208 error (_("Remote target doesn't support qGetTIBAddr packet"));
9210 error (_("Remote target failed to process qGetTIBAddr request"));
9213 error (_("qGetTIBAddr not supported or disabled on this target"));
9218 /* Support for inferring a target description based on the current
9219 architecture and the size of a 'g' packet. While the 'g' packet
9220 can have any size (since optional registers can be left off the
9221 end), some sizes are easily recognizable given knowledge of the
9222 approximate architecture. */
9224 struct remote_g_packet_guess
9227 const struct target_desc
*tdesc
;
9229 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9230 DEF_VEC_O(remote_g_packet_guess_s
);
9232 struct remote_g_packet_data
9234 VEC(remote_g_packet_guess_s
) *guesses
;
9237 static struct gdbarch_data
*remote_g_packet_data_handle
;
9240 remote_g_packet_data_init (struct obstack
*obstack
)
9242 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9246 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9247 const struct target_desc
*tdesc
)
9249 struct remote_g_packet_data
*data
9250 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9251 struct remote_g_packet_guess new_guess
, *guess
;
9254 gdb_assert (tdesc
!= NULL
);
9257 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9259 if (guess
->bytes
== bytes
)
9260 internal_error (__FILE__
, __LINE__
,
9261 _("Duplicate g packet description added for size %d"),
9264 new_guess
.bytes
= bytes
;
9265 new_guess
.tdesc
= tdesc
;
9266 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9269 /* Return 1 if remote_read_description would do anything on this target
9270 and architecture, 0 otherwise. */
9273 remote_read_description_p (struct target_ops
*target
)
9275 struct remote_g_packet_data
*data
9276 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9278 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9284 static const struct target_desc
*
9285 remote_read_description (struct target_ops
*target
)
9287 struct remote_g_packet_data
*data
9288 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9290 /* Do not try this during initial connection, when we do not know
9291 whether there is a running but stopped thread. */
9292 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9295 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9297 struct remote_g_packet_guess
*guess
;
9299 int bytes
= send_g_packet ();
9302 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9304 if (guess
->bytes
== bytes
)
9305 return guess
->tdesc
;
9307 /* We discard the g packet. A minor optimization would be to
9308 hold on to it, and fill the register cache once we have selected
9309 an architecture, but it's too tricky to do safely. */
9315 /* Remote file transfer support. This is host-initiated I/O, not
9316 target-initiated; for target-initiated, see remote-fileio.c. */
9318 /* If *LEFT is at least the length of STRING, copy STRING to
9319 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9320 decrease *LEFT. Otherwise raise an error. */
9323 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9325 int len
= strlen (string
);
9328 error (_("Packet too long for target."));
9330 memcpy (*buffer
, string
, len
);
9334 /* NUL-terminate the buffer as a convenience, if there is
9340 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9341 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9342 decrease *LEFT. Otherwise raise an error. */
9345 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9348 if (2 * len
> *left
)
9349 error (_("Packet too long for target."));
9351 bin2hex (bytes
, *buffer
, len
);
9355 /* NUL-terminate the buffer as a convenience, if there is
9361 /* If *LEFT is large enough, convert VALUE to hex and add it to
9362 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9363 decrease *LEFT. Otherwise raise an error. */
9366 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9368 int len
= hexnumlen (value
);
9371 error (_("Packet too long for target."));
9373 hexnumstr (*buffer
, value
);
9377 /* NUL-terminate the buffer as a convenience, if there is
9383 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9384 value, *REMOTE_ERRNO to the remote error number or zero if none
9385 was included, and *ATTACHMENT to point to the start of the annex
9386 if any. The length of the packet isn't needed here; there may
9387 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9389 Return 0 if the packet could be parsed, -1 if it could not. If
9390 -1 is returned, the other variables may not be initialized. */
9393 remote_hostio_parse_result (char *buffer
, int *retcode
,
9394 int *remote_errno
, char **attachment
)
9401 if (buffer
[0] != 'F')
9405 *retcode
= strtol (&buffer
[1], &p
, 16);
9406 if (errno
!= 0 || p
== &buffer
[1])
9409 /* Check for ",errno". */
9413 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9414 if (errno
!= 0 || p
+ 1 == p2
)
9419 /* Check for ";attachment". If there is no attachment, the
9420 packet should end here. */
9423 *attachment
= p
+ 1;
9426 else if (*p
== '\0')
9432 /* Send a prepared I/O packet to the target and read its response.
9433 The prepared packet is in the global RS->BUF before this function
9434 is called, and the answer is there when we return.
9436 COMMAND_BYTES is the length of the request to send, which may include
9437 binary data. WHICH_PACKET is the packet configuration to check
9438 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9439 is set to the error number and -1 is returned. Otherwise the value
9440 returned by the function is returned.
9442 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9443 attachment is expected; an error will be reported if there's a
9444 mismatch. If one is found, *ATTACHMENT will be set to point into
9445 the packet buffer and *ATTACHMENT_LEN will be set to the
9446 attachment's length. */
9449 remote_hostio_send_command (int command_bytes
, int which_packet
,
9450 int *remote_errno
, char **attachment
,
9451 int *attachment_len
)
9453 struct remote_state
*rs
= get_remote_state ();
9454 int ret
, bytes_read
;
9455 char *attachment_tmp
;
9458 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9460 *remote_errno
= FILEIO_ENOSYS
;
9464 putpkt_binary (rs
->buf
, command_bytes
);
9465 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9467 /* If it timed out, something is wrong. Don't try to parse the
9471 *remote_errno
= FILEIO_EINVAL
;
9475 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9478 *remote_errno
= FILEIO_EINVAL
;
9480 case PACKET_UNKNOWN
:
9481 *remote_errno
= FILEIO_ENOSYS
;
9487 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9490 *remote_errno
= FILEIO_EINVAL
;
9494 /* Make sure we saw an attachment if and only if we expected one. */
9495 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9496 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9498 *remote_errno
= FILEIO_EINVAL
;
9502 /* If an attachment was found, it must point into the packet buffer;
9503 work out how many bytes there were. */
9504 if (attachment_tmp
!= NULL
)
9506 *attachment
= attachment_tmp
;
9507 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9513 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9514 remote file descriptor, or -1 if an error occurs (and set
9518 remote_hostio_open (const char *filename
, int flags
, int mode
,
9521 struct remote_state
*rs
= get_remote_state ();
9523 int left
= get_remote_packet_size () - 1;
9525 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9527 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9529 remote_buffer_add_string (&p
, &left
, ",");
9531 remote_buffer_add_int (&p
, &left
, flags
);
9532 remote_buffer_add_string (&p
, &left
, ",");
9534 remote_buffer_add_int (&p
, &left
, mode
);
9536 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9537 remote_errno
, NULL
, NULL
);
9540 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9541 Return the number of bytes written, or -1 if an error occurs (and
9542 set *REMOTE_ERRNO). */
9545 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9546 ULONGEST offset
, int *remote_errno
)
9548 struct remote_state
*rs
= get_remote_state ();
9550 int left
= get_remote_packet_size ();
9553 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9555 remote_buffer_add_int (&p
, &left
, fd
);
9556 remote_buffer_add_string (&p
, &left
, ",");
9558 remote_buffer_add_int (&p
, &left
, offset
);
9559 remote_buffer_add_string (&p
, &left
, ",");
9561 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9562 get_remote_packet_size () - (p
- rs
->buf
));
9564 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9565 remote_errno
, NULL
, NULL
);
9568 /* Read up to LEN bytes FD on the remote target into READ_BUF
9569 Return the number of bytes read, or -1 if an error occurs (and
9570 set *REMOTE_ERRNO). */
9573 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9574 ULONGEST offset
, int *remote_errno
)
9576 struct remote_state
*rs
= get_remote_state ();
9579 int left
= get_remote_packet_size ();
9580 int ret
, attachment_len
;
9583 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9585 remote_buffer_add_int (&p
, &left
, fd
);
9586 remote_buffer_add_string (&p
, &left
, ",");
9588 remote_buffer_add_int (&p
, &left
, len
);
9589 remote_buffer_add_string (&p
, &left
, ",");
9591 remote_buffer_add_int (&p
, &left
, offset
);
9593 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9594 remote_errno
, &attachment
,
9600 read_len
= remote_unescape_input (attachment
, attachment_len
,
9602 if (read_len
!= ret
)
9603 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9608 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9609 (and set *REMOTE_ERRNO). */
9612 remote_hostio_close (int fd
, int *remote_errno
)
9614 struct remote_state
*rs
= get_remote_state ();
9616 int left
= get_remote_packet_size () - 1;
9618 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9620 remote_buffer_add_int (&p
, &left
, fd
);
9622 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9623 remote_errno
, NULL
, NULL
);
9626 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9627 occurs (and set *REMOTE_ERRNO). */
9630 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9632 struct remote_state
*rs
= get_remote_state ();
9634 int left
= get_remote_packet_size () - 1;
9636 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9638 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9641 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9642 remote_errno
, NULL
, NULL
);
9645 /* Read value of symbolic link FILENAME on the remote target. Return
9646 a null-terminated string allocated via xmalloc, or NULL if an error
9647 occurs (and set *REMOTE_ERRNO). */
9650 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9652 struct remote_state
*rs
= get_remote_state ();
9655 int left
= get_remote_packet_size ();
9656 int len
, attachment_len
;
9660 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9662 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9665 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9666 remote_errno
, &attachment
,
9672 ret
= xmalloc (len
+ 1);
9674 read_len
= remote_unescape_input (attachment
, attachment_len
,
9676 if (read_len
!= len
)
9677 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9684 remote_fileio_errno_to_host (int errnum
)
9708 case FILEIO_ENOTDIR
:
9728 case FILEIO_ENAMETOOLONG
:
9729 return ENAMETOOLONG
;
9735 remote_hostio_error (int errnum
)
9737 int host_error
= remote_fileio_errno_to_host (errnum
);
9739 if (host_error
== -1)
9740 error (_("Unknown remote I/O error %d"), errnum
);
9742 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9746 remote_hostio_close_cleanup (void *opaque
)
9748 int fd
= *(int *) opaque
;
9751 remote_hostio_close (fd
, &remote_errno
);
9756 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9758 const char *filename
= bfd_get_filename (abfd
);
9759 int fd
, remote_errno
;
9762 gdb_assert (remote_filename_p (filename
));
9764 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9767 errno
= remote_fileio_errno_to_host (remote_errno
);
9768 bfd_set_error (bfd_error_system_call
);
9772 stream
= xmalloc (sizeof (int));
9778 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9780 int fd
= *(int *)stream
;
9785 /* Ignore errors on close; these may happen if the remote
9786 connection was already torn down. */
9787 remote_hostio_close (fd
, &remote_errno
);
9793 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9794 file_ptr nbytes
, file_ptr offset
)
9796 int fd
= *(int *)stream
;
9798 file_ptr pos
, bytes
;
9801 while (nbytes
> pos
)
9803 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9804 offset
+ pos
, &remote_errno
);
9806 /* Success, but no bytes, means end-of-file. */
9810 errno
= remote_fileio_errno_to_host (remote_errno
);
9811 bfd_set_error (bfd_error_system_call
);
9822 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9824 /* FIXME: We should probably implement remote_hostio_stat. */
9825 sb
->st_size
= INT_MAX
;
9830 remote_filename_p (const char *filename
)
9832 return strncmp (filename
, "remote:", 7) == 0;
9836 remote_bfd_open (const char *remote_file
, const char *target
)
9838 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9839 remote_bfd_iovec_open
, NULL
,
9840 remote_bfd_iovec_pread
,
9841 remote_bfd_iovec_close
,
9842 remote_bfd_iovec_stat
);
9848 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9850 struct cleanup
*back_to
, *close_cleanup
;
9851 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9854 int bytes_in_buffer
;
9859 error (_("command can only be used with remote target"));
9861 file
= fopen (local_file
, "rb");
9863 perror_with_name (local_file
);
9864 back_to
= make_cleanup_fclose (file
);
9866 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9868 0700, &remote_errno
);
9870 remote_hostio_error (remote_errno
);
9872 /* Send up to this many bytes at once. They won't all fit in the
9873 remote packet limit, so we'll transfer slightly fewer. */
9874 io_size
= get_remote_packet_size ();
9875 buffer
= xmalloc (io_size
);
9876 make_cleanup (xfree
, buffer
);
9878 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9880 bytes_in_buffer
= 0;
9883 while (bytes_in_buffer
|| !saw_eof
)
9887 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9888 io_size
- bytes_in_buffer
,
9893 error (_("Error reading %s."), local_file
);
9896 /* EOF. Unless there is something still in the
9897 buffer from the last iteration, we are done. */
9899 if (bytes_in_buffer
== 0)
9907 bytes
+= bytes_in_buffer
;
9908 bytes_in_buffer
= 0;
9910 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9911 offset
, &remote_errno
);
9914 remote_hostio_error (remote_errno
);
9915 else if (retcode
== 0)
9916 error (_("Remote write of %d bytes returned 0!"), bytes
);
9917 else if (retcode
< bytes
)
9919 /* Short write. Save the rest of the read data for the next
9921 bytes_in_buffer
= bytes
- retcode
;
9922 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9928 discard_cleanups (close_cleanup
);
9929 if (remote_hostio_close (fd
, &remote_errno
))
9930 remote_hostio_error (remote_errno
);
9933 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9934 do_cleanups (back_to
);
9938 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9940 struct cleanup
*back_to
, *close_cleanup
;
9941 int fd
, remote_errno
, bytes
, io_size
;
9947 error (_("command can only be used with remote target"));
9949 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9951 remote_hostio_error (remote_errno
);
9953 file
= fopen (local_file
, "wb");
9955 perror_with_name (local_file
);
9956 back_to
= make_cleanup_fclose (file
);
9958 /* Send up to this many bytes at once. They won't all fit in the
9959 remote packet limit, so we'll transfer slightly fewer. */
9960 io_size
= get_remote_packet_size ();
9961 buffer
= xmalloc (io_size
);
9962 make_cleanup (xfree
, buffer
);
9964 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9969 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9971 /* Success, but no bytes, means end-of-file. */
9974 remote_hostio_error (remote_errno
);
9978 bytes
= fwrite (buffer
, 1, bytes
, file
);
9980 perror_with_name (local_file
);
9983 discard_cleanups (close_cleanup
);
9984 if (remote_hostio_close (fd
, &remote_errno
))
9985 remote_hostio_error (remote_errno
);
9988 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9989 do_cleanups (back_to
);
9993 remote_file_delete (const char *remote_file
, int from_tty
)
9995 int retcode
, remote_errno
;
9998 error (_("command can only be used with remote target"));
10000 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10002 remote_hostio_error (remote_errno
);
10005 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10009 remote_put_command (char *args
, int from_tty
)
10011 struct cleanup
*back_to
;
10015 error_no_arg (_("file to put"));
10017 argv
= gdb_buildargv (args
);
10018 back_to
= make_cleanup_freeargv (argv
);
10019 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10020 error (_("Invalid parameters to remote put"));
10022 remote_file_put (argv
[0], argv
[1], from_tty
);
10024 do_cleanups (back_to
);
10028 remote_get_command (char *args
, int from_tty
)
10030 struct cleanup
*back_to
;
10034 error_no_arg (_("file to get"));
10036 argv
= gdb_buildargv (args
);
10037 back_to
= make_cleanup_freeargv (argv
);
10038 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10039 error (_("Invalid parameters to remote get"));
10041 remote_file_get (argv
[0], argv
[1], from_tty
);
10043 do_cleanups (back_to
);
10047 remote_delete_command (char *args
, int from_tty
)
10049 struct cleanup
*back_to
;
10053 error_no_arg (_("file to delete"));
10055 argv
= gdb_buildargv (args
);
10056 back_to
= make_cleanup_freeargv (argv
);
10057 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10058 error (_("Invalid parameters to remote delete"));
10060 remote_file_delete (argv
[0], from_tty
);
10062 do_cleanups (back_to
);
10066 remote_command (char *args
, int from_tty
)
10068 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10072 remote_can_execute_reverse (void)
10074 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10075 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10082 remote_supports_non_stop (void)
10088 remote_supports_disable_randomization (void)
10090 /* Only supported in extended mode. */
10095 remote_supports_multi_process (void)
10097 struct remote_state
*rs
= get_remote_state ();
10099 /* Only extended-remote handles being attached to multiple
10100 processes, even though plain remote can use the multi-process
10101 thread id extensions, so that GDB knows the target process's
10103 return rs
->extended
&& remote_multi_process_p (rs
);
10107 remote_supports_cond_tracepoints (void)
10109 struct remote_state
*rs
= get_remote_state ();
10111 return rs
->cond_tracepoints
;
10115 remote_supports_cond_breakpoints (void)
10117 struct remote_state
*rs
= get_remote_state ();
10119 return rs
->cond_breakpoints
;
10123 remote_supports_fast_tracepoints (void)
10125 struct remote_state
*rs
= get_remote_state ();
10127 return rs
->fast_tracepoints
;
10131 remote_supports_static_tracepoints (void)
10133 struct remote_state
*rs
= get_remote_state ();
10135 return rs
->static_tracepoints
;
10139 remote_supports_install_in_trace (void)
10141 struct remote_state
*rs
= get_remote_state ();
10143 return rs
->install_in_trace
;
10147 remote_supports_enable_disable_tracepoint (void)
10149 struct remote_state
*rs
= get_remote_state ();
10151 return rs
->enable_disable_tracepoints
;
10155 remote_supports_string_tracing (void)
10157 struct remote_state
*rs
= get_remote_state ();
10159 return rs
->string_tracing
;
10163 remote_can_run_breakpoint_commands (void)
10165 struct remote_state
*rs
= get_remote_state ();
10167 return rs
->breakpoint_commands
;
10171 remote_trace_init (void)
10174 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10175 if (strcmp (target_buf
, "OK") != 0)
10176 error (_("Target does not support this command."));
10179 static void free_actions_list (char **actions_list
);
10180 static void free_actions_list_cleanup_wrapper (void *);
10182 free_actions_list_cleanup_wrapper (void *al
)
10184 free_actions_list (al
);
10188 free_actions_list (char **actions_list
)
10192 if (actions_list
== 0)
10195 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10196 xfree (actions_list
[ndx
]);
10198 xfree (actions_list
);
10201 /* Recursive routine to walk through command list including loops, and
10202 download packets for each command. */
10205 remote_download_command_source (int num
, ULONGEST addr
,
10206 struct command_line
*cmds
)
10208 struct remote_state
*rs
= get_remote_state ();
10209 struct command_line
*cmd
;
10211 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10213 QUIT
; /* Allow user to bail out with ^C. */
10214 strcpy (rs
->buf
, "QTDPsrc:");
10215 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10216 rs
->buf
+ strlen (rs
->buf
),
10217 rs
->buf_size
- strlen (rs
->buf
));
10219 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10220 if (strcmp (target_buf
, "OK"))
10221 warning (_("Target does not support source download."));
10223 if (cmd
->control_type
== while_control
10224 || cmd
->control_type
== while_stepping_control
)
10226 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10228 QUIT
; /* Allow user to bail out with ^C. */
10229 strcpy (rs
->buf
, "QTDPsrc:");
10230 encode_source_string (num
, addr
, "cmd", "end",
10231 rs
->buf
+ strlen (rs
->buf
),
10232 rs
->buf_size
- strlen (rs
->buf
));
10234 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10235 if (strcmp (target_buf
, "OK"))
10236 warning (_("Target does not support source download."));
10242 remote_download_tracepoint (struct bp_location
*loc
)
10244 #define BUF_SIZE 2048
10248 char buf
[BUF_SIZE
];
10249 char **tdp_actions
;
10250 char **stepping_actions
;
10252 struct cleanup
*old_chain
= NULL
;
10253 struct agent_expr
*aexpr
;
10254 struct cleanup
*aexpr_chain
= NULL
;
10256 struct breakpoint
*b
= loc
->owner
;
10257 struct tracepoint
*t
= (struct tracepoint
*) b
;
10259 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10260 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10262 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10265 tpaddr
= loc
->address
;
10266 sprintf_vma (addrbuf
, tpaddr
);
10267 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10268 addrbuf
, /* address */
10269 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10270 t
->step_count
, t
->pass_count
);
10271 /* Fast tracepoints are mostly handled by the target, but we can
10272 tell the target how big of an instruction block should be moved
10274 if (b
->type
== bp_fast_tracepoint
)
10276 /* Only test for support at download time; we may not know
10277 target capabilities at definition time. */
10278 if (remote_supports_fast_tracepoints ())
10282 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
10283 tpaddr
, &isize
, NULL
))
10284 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10287 /* If it passed validation at definition but fails now,
10288 something is very wrong. */
10289 internal_error (__FILE__
, __LINE__
,
10290 _("Fast tracepoint not "
10291 "valid during download"));
10294 /* Fast tracepoints are functionally identical to regular
10295 tracepoints, so don't take lack of support as a reason to
10296 give up on the trace run. */
10297 warning (_("Target does not support fast tracepoints, "
10298 "downloading %d as regular tracepoint"), b
->number
);
10300 else if (b
->type
== bp_static_tracepoint
)
10302 /* Only test for support at download time; we may not know
10303 target capabilities at definition time. */
10304 if (remote_supports_static_tracepoints ())
10306 struct static_tracepoint_marker marker
;
10308 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10309 strcat (buf
, ":S");
10311 error (_("Static tracepoint not valid during download"));
10314 /* Fast tracepoints are functionally identical to regular
10315 tracepoints, so don't take lack of support as a reason
10316 to give up on the trace run. */
10317 error (_("Target does not support static tracepoints"));
10319 /* If the tracepoint has a conditional, make it into an agent
10320 expression and append to the definition. */
10323 /* Only test support at download time, we may not know target
10324 capabilities at definition time. */
10325 if (remote_supports_cond_tracepoints ())
10327 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10328 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10329 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10331 pkt
= buf
+ strlen (buf
);
10332 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10333 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10335 do_cleanups (aexpr_chain
);
10338 warning (_("Target does not support conditional tracepoints, "
10339 "ignoring tp %d cond"), b
->number
);
10342 if (b
->commands
|| *default_collect
)
10345 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10346 if (strcmp (target_buf
, "OK"))
10347 error (_("Target does not support tracepoints."));
10349 /* do_single_steps (t); */
10352 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10354 QUIT
; /* Allow user to bail out with ^C. */
10355 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10356 b
->number
, addrbuf
, /* address */
10358 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10361 remote_get_noisy_reply (&target_buf
,
10363 if (strcmp (target_buf
, "OK"))
10364 error (_("Error on target while setting tracepoints."));
10367 if (stepping_actions
)
10369 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10371 QUIT
; /* Allow user to bail out with ^C. */
10372 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10373 b
->number
, addrbuf
, /* address */
10374 ((ndx
== 0) ? "S" : ""),
10375 stepping_actions
[ndx
],
10376 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10378 remote_get_noisy_reply (&target_buf
,
10380 if (strcmp (target_buf
, "OK"))
10381 error (_("Error on target while setting tracepoints."));
10385 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10388 if (b
->addr_string
)
10390 strcpy (buf
, "QTDPsrc:");
10391 encode_source_string (b
->number
, loc
->address
,
10392 "at", b
->addr_string
, buf
+ strlen (buf
),
10393 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 if (b
->cond_string
)
10402 strcpy (buf
, "QTDPsrc:");
10403 encode_source_string (b
->number
, loc
->address
,
10404 "cond", b
->cond_string
, buf
+ strlen (buf
),
10405 2048 - strlen (buf
));
10407 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10408 if (strcmp (target_buf
, "OK"))
10409 warning (_("Target does not support source download."));
10411 remote_download_command_source (b
->number
, loc
->address
,
10412 breakpoint_commands (b
));
10415 do_cleanups (old_chain
);
10419 remote_can_download_tracepoint (void)
10421 struct remote_state
*rs
= get_remote_state ();
10422 struct trace_status
*ts
;
10425 /* Don't try to install tracepoints until we've relocated our
10426 symbols, and fetched and merged the target's tracepoint list with
10428 if (rs
->starting_up
)
10431 ts
= current_trace_status ();
10432 status
= remote_get_trace_status (ts
);
10434 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10437 /* If we are in a tracing experiment, but remote stub doesn't support
10438 installing tracepoint in trace, we have to return. */
10439 if (!remote_supports_install_in_trace ())
10447 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10449 struct remote_state
*rs
= get_remote_state ();
10452 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10453 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10455 p
= rs
->buf
+ strlen (rs
->buf
);
10456 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10457 error (_("Trace state variable name too long for tsv definition packet"));
10458 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10461 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10462 if (*target_buf
== '\0')
10463 error (_("Target does not support this command."));
10464 if (strcmp (target_buf
, "OK") != 0)
10465 error (_("Error on target while downloading trace state variable."));
10469 remote_enable_tracepoint (struct bp_location
*location
)
10471 struct remote_state
*rs
= get_remote_state ();
10474 sprintf_vma (addr_buf
, location
->address
);
10475 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10476 location
->owner
->number
, addr_buf
);
10478 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10479 if (*rs
->buf
== '\0')
10480 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10481 if (strcmp (rs
->buf
, "OK") != 0)
10482 error (_("Error on target while enabling tracepoint."));
10486 remote_disable_tracepoint (struct bp_location
*location
)
10488 struct remote_state
*rs
= get_remote_state ();
10491 sprintf_vma (addr_buf
, location
->address
);
10492 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10493 location
->owner
->number
, addr_buf
);
10495 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10496 if (*rs
->buf
== '\0')
10497 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10498 if (strcmp (rs
->buf
, "OK") != 0)
10499 error (_("Error on target while disabling tracepoint."));
10503 remote_trace_set_readonly_regions (void)
10507 bfd_size_type size
;
10513 return; /* No information to give. */
10515 strcpy (target_buf
, "QTro");
10516 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10518 char tmp1
[40], tmp2
[40];
10521 if ((s
->flags
& SEC_LOAD
) == 0 ||
10522 /* (s->flags & SEC_CODE) == 0 || */
10523 (s
->flags
& SEC_READONLY
) == 0)
10527 vma
= bfd_get_section_vma (abfd
, s
);
10528 size
= bfd_get_section_size (s
);
10529 sprintf_vma (tmp1
, vma
);
10530 sprintf_vma (tmp2
, vma
+ size
);
10531 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10532 if (offset
+ sec_length
+ 1 > target_buf_size
)
10534 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10537 Too many sections for read-only sections definition packet."));
10540 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10542 offset
+= sec_length
;
10546 putpkt (target_buf
);
10547 getpkt (&target_buf
, &target_buf_size
, 0);
10552 remote_trace_start (void)
10554 putpkt ("QTStart");
10555 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10556 if (*target_buf
== '\0')
10557 error (_("Target does not support this command."));
10558 if (strcmp (target_buf
, "OK") != 0)
10559 error (_("Bogus reply from target: %s"), target_buf
);
10563 remote_get_trace_status (struct trace_status
*ts
)
10565 /* Initialize it just to avoid a GCC false warning. */
10567 /* FIXME we need to get register block size some other way. */
10568 extern int trace_regblock_size
;
10569 volatile struct gdb_exception ex
;
10571 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10573 putpkt ("qTStatus");
10575 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10577 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10581 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10585 /* If the remote target doesn't do tracing, flag it. */
10589 /* We're working with a live target. */
10593 error (_("Bogus trace status reply from target: %s"), target_buf
);
10595 /* Function 'parse_trace_status' sets default value of each field of
10596 'ts' at first, so we don't have to do it here. */
10597 parse_trace_status (p
, ts
);
10599 return ts
->running
;
10603 remote_get_tracepoint_status (struct breakpoint
*bp
,
10604 struct uploaded_tp
*utp
)
10606 struct remote_state
*rs
= get_remote_state ();
10608 struct bp_location
*loc
;
10609 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10610 size_t size
= get_remote_packet_size ();
10614 tp
->base
.hit_count
= 0;
10615 tp
->traceframe_usage
= 0;
10616 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10618 /* If the tracepoint was never downloaded, don't go asking for
10620 if (tp
->number_on_target
== 0)
10622 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10623 phex_nz (loc
->address
, 0));
10625 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10626 if (reply
&& *reply
)
10629 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10635 utp
->hit_count
= 0;
10636 utp
->traceframe_usage
= 0;
10637 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10638 phex_nz (utp
->addr
, 0));
10640 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10641 if (reply
&& *reply
)
10644 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10650 remote_trace_stop (void)
10653 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10654 if (*target_buf
== '\0')
10655 error (_("Target does not support this command."));
10656 if (strcmp (target_buf
, "OK") != 0)
10657 error (_("Bogus reply from target: %s"), target_buf
);
10661 remote_trace_find (enum trace_find_type type
, int num
,
10662 ULONGEST addr1
, ULONGEST addr2
,
10665 struct remote_state
*rs
= get_remote_state ();
10666 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10668 int target_frameno
= -1, target_tracept
= -1;
10670 /* Lookups other than by absolute frame number depend on the current
10671 trace selected, so make sure it is correct on the remote end
10673 if (type
!= tfind_number
)
10674 set_remote_traceframe ();
10677 strcpy (p
, "QTFrame:");
10678 p
= strchr (p
, '\0');
10682 xsnprintf (p
, endbuf
- p
, "%x", num
);
10685 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10688 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10691 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10692 phex_nz (addr2
, 0));
10694 case tfind_outside
:
10695 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10696 phex_nz (addr2
, 0));
10699 error (_("Unknown trace find type %d"), type
);
10703 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10704 if (*reply
== '\0')
10705 error (_("Target does not support this command."));
10707 while (reply
&& *reply
)
10712 target_frameno
= (int) strtol (p
, &reply
, 16);
10714 error (_("Unable to parse trace frame number"));
10715 /* Don't update our remote traceframe number cache on failure
10716 to select a remote traceframe. */
10717 if (target_frameno
== -1)
10722 target_tracept
= (int) strtol (p
, &reply
, 16);
10724 error (_("Unable to parse tracepoint number"));
10726 case 'O': /* "OK"? */
10727 if (reply
[1] == 'K' && reply
[2] == '\0')
10730 error (_("Bogus reply from target: %s"), reply
);
10733 error (_("Bogus reply from target: %s"), reply
);
10736 *tpp
= target_tracept
;
10738 remote_traceframe_number
= target_frameno
;
10739 return target_frameno
;
10743 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10745 struct remote_state
*rs
= get_remote_state ();
10749 set_remote_traceframe ();
10751 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10753 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10754 if (reply
&& *reply
)
10758 unpack_varlen_hex (reply
+ 1, &uval
);
10759 *val
= (LONGEST
) uval
;
10767 remote_save_trace_data (const char *filename
)
10769 struct remote_state
*rs
= get_remote_state ();
10773 strcpy (p
, "QTSave:");
10775 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10776 error (_("Remote file name too long for trace save packet"));
10777 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10780 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10781 if (*reply
== '\0')
10782 error (_("Target does not support this command."));
10783 if (strcmp (reply
, "OK") != 0)
10784 error (_("Bogus reply from target: %s"), reply
);
10788 /* This is basically a memory transfer, but needs to be its own packet
10789 because we don't know how the target actually organizes its trace
10790 memory, plus we want to be able to ask for as much as possible, but
10791 not be unhappy if we don't get as much as we ask for. */
10794 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10796 struct remote_state
*rs
= get_remote_state ();
10802 strcpy (p
, "qTBuffer:");
10804 p
+= hexnumstr (p
, offset
);
10806 p
+= hexnumstr (p
, len
);
10810 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10811 if (reply
&& *reply
)
10813 /* 'l' by itself means we're at the end of the buffer and
10814 there is nothing more to get. */
10818 /* Convert the reply into binary. Limit the number of bytes to
10819 convert according to our passed-in buffer size, rather than
10820 what was returned in the packet; if the target is
10821 unexpectedly generous and gives us a bigger reply than we
10822 asked for, we don't want to crash. */
10823 rslt
= hex2bin (target_buf
, buf
, len
);
10827 /* Something went wrong, flag as an error. */
10832 remote_set_disconnected_tracing (int val
)
10834 struct remote_state
*rs
= get_remote_state ();
10836 if (rs
->disconnected_tracing
)
10840 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10842 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10843 if (*reply
== '\0')
10844 error (_("Target does not support this command."));
10845 if (strcmp (reply
, "OK") != 0)
10846 error (_("Bogus reply from target: %s"), reply
);
10849 warning (_("Target does not support disconnected tracing."));
10853 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10855 struct thread_info
*info
= find_thread_ptid (ptid
);
10857 if (info
&& info
->private)
10858 return info
->private->core
;
10863 remote_set_circular_trace_buffer (int val
)
10865 struct remote_state
*rs
= get_remote_state ();
10868 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
10870 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10871 if (*reply
== '\0')
10872 error (_("Target does not support this command."));
10873 if (strcmp (reply
, "OK") != 0)
10874 error (_("Bogus reply from target: %s"), reply
);
10877 static struct traceframe_info
*
10878 remote_traceframe_info (void)
10882 text
= target_read_stralloc (¤t_target
,
10883 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10886 struct traceframe_info
*info
;
10887 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10889 info
= parse_traceframe_info (text
);
10890 do_cleanups (back_to
);
10897 /* Handle the qTMinFTPILen packet. Returns the minimum length of
10898 instruction on which a fast tracepoint may be placed. Returns -1
10899 if the packet is not supported, and 0 if the minimum instruction
10900 length is unknown. */
10903 remote_get_min_fast_tracepoint_insn_len (void)
10905 struct remote_state
*rs
= get_remote_state ();
10908 /* If we're not debugging a process yet, the IPA can't be
10910 if (!target_has_execution
)
10913 /* Make sure the remote is pointing at the right process. */
10914 set_general_process ();
10916 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
10918 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10919 if (*reply
== '\0')
10923 ULONGEST min_insn_len
;
10925 unpack_varlen_hex (reply
, &min_insn_len
);
10927 return (int) min_insn_len
;
10932 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
10934 struct remote_state
*rs
= get_remote_state ();
10936 char *buf
= rs
->buf
;
10937 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10940 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
10943 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
10944 nbytes
= bin2hex (user
, buf
, 0);
10950 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
10951 nbytes
= bin2hex (notes
, buf
, 0);
10957 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
10958 nbytes
= bin2hex (stop_notes
, buf
, 0);
10962 /* Ensure the buffer is terminated. */
10966 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10967 if (*reply
== '\0')
10970 if (strcmp (reply
, "OK") != 0)
10971 error (_("Bogus reply from target: %s"), reply
);
10977 remote_use_agent (int use
)
10979 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
10981 struct remote_state
*rs
= get_remote_state ();
10983 /* If the stub supports QAgent. */
10984 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
10986 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10988 if (strcmp (rs
->buf
, "OK") == 0)
10999 remote_can_use_agent (void)
11001 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11005 init_remote_ops (void)
11007 remote_ops
.to_shortname
= "remote";
11008 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11009 remote_ops
.to_doc
=
11010 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11011 Specify the serial device it is connected to\n\
11012 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11013 remote_ops
.to_open
= remote_open
;
11014 remote_ops
.to_close
= remote_close
;
11015 remote_ops
.to_detach
= remote_detach
;
11016 remote_ops
.to_disconnect
= remote_disconnect
;
11017 remote_ops
.to_resume
= remote_resume
;
11018 remote_ops
.to_wait
= remote_wait
;
11019 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11020 remote_ops
.to_store_registers
= remote_store_registers
;
11021 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11022 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11023 remote_ops
.to_files_info
= remote_files_info
;
11024 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11025 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11026 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11027 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11028 remote_ops
.to_watchpoint_addr_within_range
=
11029 remote_watchpoint_addr_within_range
;
11030 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11031 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11032 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11033 remote_ops
.to_region_ok_for_hw_watchpoint
11034 = remote_region_ok_for_hw_watchpoint
;
11035 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11036 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11037 remote_ops
.to_kill
= remote_kill
;
11038 remote_ops
.to_load
= generic_load
;
11039 remote_ops
.to_mourn_inferior
= remote_mourn
;
11040 remote_ops
.to_pass_signals
= remote_pass_signals
;
11041 remote_ops
.to_program_signals
= remote_program_signals
;
11042 remote_ops
.to_thread_alive
= remote_thread_alive
;
11043 remote_ops
.to_find_new_threads
= remote_threads_info
;
11044 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11045 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11046 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11047 remote_ops
.to_stop
= remote_stop
;
11048 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11049 remote_ops
.to_rcmd
= remote_rcmd
;
11050 remote_ops
.to_log_command
= serial_log_command
;
11051 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11052 remote_ops
.to_stratum
= process_stratum
;
11053 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11054 remote_ops
.to_has_memory
= default_child_has_memory
;
11055 remote_ops
.to_has_stack
= default_child_has_stack
;
11056 remote_ops
.to_has_registers
= default_child_has_registers
;
11057 remote_ops
.to_has_execution
= default_child_has_execution
;
11058 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11059 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11060 remote_ops
.to_magic
= OPS_MAGIC
;
11061 remote_ops
.to_memory_map
= remote_memory_map
;
11062 remote_ops
.to_flash_erase
= remote_flash_erase
;
11063 remote_ops
.to_flash_done
= remote_flash_done
;
11064 remote_ops
.to_read_description
= remote_read_description
;
11065 remote_ops
.to_search_memory
= remote_search_memory
;
11066 remote_ops
.to_can_async_p
= remote_can_async_p
;
11067 remote_ops
.to_is_async_p
= remote_is_async_p
;
11068 remote_ops
.to_async
= remote_async
;
11069 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11070 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11071 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11072 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11073 remote_ops
.to_supports_disable_randomization
11074 = remote_supports_disable_randomization
;
11075 remote_ops
.to_fileio_open
= remote_hostio_open
;
11076 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11077 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11078 remote_ops
.to_fileio_close
= remote_hostio_close
;
11079 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11080 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11081 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11082 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11083 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11084 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11085 remote_ops
.to_trace_init
= remote_trace_init
;
11086 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11087 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11088 remote_ops
.to_download_trace_state_variable
11089 = remote_download_trace_state_variable
;
11090 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11091 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11092 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11093 remote_ops
.to_trace_start
= remote_trace_start
;
11094 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11095 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11096 remote_ops
.to_trace_stop
= remote_trace_stop
;
11097 remote_ops
.to_trace_find
= remote_trace_find
;
11098 remote_ops
.to_get_trace_state_variable_value
11099 = remote_get_trace_state_variable_value
;
11100 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11101 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11102 remote_ops
.to_upload_trace_state_variables
11103 = remote_upload_trace_state_variables
;
11104 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11105 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11106 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11107 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11108 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11109 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11110 remote_ops
.to_verify_memory
= remote_verify_memory
;
11111 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11112 remote_ops
.to_set_permissions
= remote_set_permissions
;
11113 remote_ops
.to_static_tracepoint_marker_at
11114 = remote_static_tracepoint_marker_at
;
11115 remote_ops
.to_static_tracepoint_markers_by_strid
11116 = remote_static_tracepoint_markers_by_strid
;
11117 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11118 remote_ops
.to_use_agent
= remote_use_agent
;
11119 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11122 /* Set up the extended remote vector by making a copy of the standard
11123 remote vector and adding to it. */
11126 init_extended_remote_ops (void)
11128 extended_remote_ops
= remote_ops
;
11130 extended_remote_ops
.to_shortname
= "extended-remote";
11131 extended_remote_ops
.to_longname
=
11132 "Extended remote serial target in gdb-specific protocol";
11133 extended_remote_ops
.to_doc
=
11134 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11135 Specify the serial device it is connected to (e.g. /dev/ttya).";
11136 extended_remote_ops
.to_open
= extended_remote_open
;
11137 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11138 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11139 extended_remote_ops
.to_detach
= extended_remote_detach
;
11140 extended_remote_ops
.to_attach
= extended_remote_attach
;
11141 extended_remote_ops
.to_kill
= extended_remote_kill
;
11142 extended_remote_ops
.to_supports_disable_randomization
11143 = extended_remote_supports_disable_randomization
;
11147 remote_can_async_p (void)
11149 if (!target_async_permitted
)
11150 /* We only enable async when the user specifically asks for it. */
11153 /* We're async whenever the serial device is. */
11154 return serial_can_async_p (remote_desc
);
11158 remote_is_async_p (void)
11160 if (!target_async_permitted
)
11161 /* We only enable async when the user specifically asks for it. */
11164 /* We're async whenever the serial device is. */
11165 return serial_is_async_p (remote_desc
);
11168 /* Pass the SERIAL event on and up to the client. One day this code
11169 will be able to delay notifying the client of an event until the
11170 point where an entire packet has been received. */
11172 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11174 static void *async_client_context
;
11175 static serial_event_ftype remote_async_serial_handler
;
11178 remote_async_serial_handler (struct serial
*scb
, void *context
)
11180 /* Don't propogate error information up to the client. Instead let
11181 the client find out about the error by querying the target. */
11182 async_client_callback (INF_REG_EVENT
, async_client_context
);
11186 remote_async_inferior_event_handler (gdb_client_data data
)
11188 inferior_event_handler (INF_REG_EVENT
, NULL
);
11192 remote_async_get_pending_events_handler (gdb_client_data data
)
11194 remote_get_pending_stop_replies ();
11198 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11199 void *context
), void *context
)
11201 if (callback
!= NULL
)
11203 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11204 async_client_callback
= callback
;
11205 async_client_context
= context
;
11208 serial_async (remote_desc
, NULL
, NULL
);
11212 set_remote_cmd (char *args
, int from_tty
)
11214 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11218 show_remote_cmd (char *args
, int from_tty
)
11220 /* We can't just use cmd_show_list here, because we want to skip
11221 the redundant "show remote Z-packet" and the legacy aliases. */
11222 struct cleanup
*showlist_chain
;
11223 struct cmd_list_element
*list
= remote_show_cmdlist
;
11224 struct ui_out
*uiout
= current_uiout
;
11226 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11227 for (; list
!= NULL
; list
= list
->next
)
11228 if (strcmp (list
->name
, "Z-packet") == 0)
11230 else if (list
->type
== not_set_cmd
)
11231 /* Alias commands are exactly like the original, except they
11232 don't have the normal type. */
11236 struct cleanup
*option_chain
11237 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11239 ui_out_field_string (uiout
, "name", list
->name
);
11240 ui_out_text (uiout
, ": ");
11241 if (list
->type
== show_cmd
)
11242 do_show_command ((char *) NULL
, from_tty
, list
);
11244 cmd_func (list
, NULL
, from_tty
);
11245 /* Close the tuple. */
11246 do_cleanups (option_chain
);
11249 /* Close the tuple. */
11250 do_cleanups (showlist_chain
);
11254 /* Function to be called whenever a new objfile (shlib) is detected. */
11256 remote_new_objfile (struct objfile
*objfile
)
11258 if (remote_desc
!= 0) /* Have a remote connection. */
11259 remote_check_symbols (objfile
);
11262 /* Pull all the tracepoints defined on the target and create local
11263 data structures representing them. We don't want to create real
11264 tracepoints yet, we don't want to mess up the user's existing
11268 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11270 struct remote_state
*rs
= get_remote_state ();
11273 /* Ask for a first packet of tracepoint definition. */
11275 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11277 while (*p
&& *p
!= 'l')
11279 parse_tracepoint_definition (p
, utpp
);
11280 /* Ask for another packet of tracepoint definition. */
11282 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11289 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11291 struct remote_state
*rs
= get_remote_state ();
11294 /* Ask for a first packet of variable definition. */
11296 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11298 while (*p
&& *p
!= 'l')
11300 parse_tsv_definition (p
, utsvp
);
11301 /* Ask for another packet of variable definition. */
11303 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11310 _initialize_remote (void)
11312 struct remote_state
*rs
;
11313 struct cmd_list_element
*cmd
;
11316 /* architecture specific data */
11317 remote_gdbarch_data_handle
=
11318 gdbarch_data_register_post_init (init_remote_state
);
11319 remote_g_packet_data_handle
=
11320 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11322 /* Initialize the per-target state. At the moment there is only one
11323 of these, not one per target. Only one target is active at a
11324 time. The default buffer size is unimportant; it will be expanded
11325 whenever a larger buffer is needed. */
11326 rs
= get_remote_state_raw ();
11327 rs
->buf_size
= 400;
11328 rs
->buf
= xmalloc (rs
->buf_size
);
11330 init_remote_ops ();
11331 add_target (&remote_ops
);
11333 init_extended_remote_ops ();
11334 add_target (&extended_remote_ops
);
11336 /* Hook into new objfile notification. */
11337 observer_attach_new_objfile (remote_new_objfile
);
11339 /* Set up signal handlers. */
11340 sigint_remote_token
=
11341 create_async_signal_handler (async_remote_interrupt
, NULL
);
11342 sigint_remote_twice_token
=
11343 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11346 init_remote_threadtests ();
11349 /* set/show remote ... */
11351 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11352 Remote protocol specific variables\n\
11353 Configure various remote-protocol specific variables such as\n\
11354 the packets being used"),
11355 &remote_set_cmdlist
, "set remote ",
11356 0 /* allow-unknown */, &setlist
);
11357 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11358 Remote protocol specific variables\n\
11359 Configure various remote-protocol specific variables such as\n\
11360 the packets being used"),
11361 &remote_show_cmdlist
, "show remote ",
11362 0 /* allow-unknown */, &showlist
);
11364 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11365 Compare section data on target to the exec file.\n\
11366 Argument is a single section name (default: all loaded sections)."),
11369 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11370 Send an arbitrary packet to a remote target.\n\
11371 maintenance packet TEXT\n\
11372 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11373 this command sends the string TEXT to the inferior, and displays the\n\
11374 response packet. GDB supplies the initial `$' character, and the\n\
11375 terminating `#' character and checksum."),
11378 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11379 Set whether to send break if interrupted."), _("\
11380 Show whether to send break if interrupted."), _("\
11381 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11382 set_remotebreak
, show_remotebreak
,
11383 &setlist
, &showlist
);
11384 cmd_name
= "remotebreak";
11385 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11386 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11387 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11388 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11389 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11391 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11392 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11394 Set interrupt sequence to remote target."), _("\
11395 Show interrupt sequence to remote target."), _("\
11396 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11397 NULL
, show_interrupt_sequence
,
11398 &remote_set_cmdlist
,
11399 &remote_show_cmdlist
);
11401 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11402 &interrupt_on_connect
, _("\
11403 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11404 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11405 If set, interrupt sequence is sent to remote target."),
11407 &remote_set_cmdlist
, &remote_show_cmdlist
);
11409 /* Install commands for configuring memory read/write packets. */
11411 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11412 Set the maximum number of bytes per memory write packet (deprecated)."),
11414 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11415 Show the maximum number of bytes per memory write packet (deprecated)."),
11417 add_cmd ("memory-write-packet-size", no_class
,
11418 set_memory_write_packet_size
, _("\
11419 Set the maximum number of bytes per memory-write packet.\n\
11420 Specify the number of bytes in a packet or 0 (zero) for the\n\
11421 default packet size. The actual limit is further reduced\n\
11422 dependent on the target. Specify ``fixed'' to disable the\n\
11423 further restriction and ``limit'' to enable that restriction."),
11424 &remote_set_cmdlist
);
11425 add_cmd ("memory-read-packet-size", no_class
,
11426 set_memory_read_packet_size
, _("\
11427 Set the maximum number of bytes per memory-read packet.\n\
11428 Specify the number of bytes in a packet or 0 (zero) for the\n\
11429 default packet size. The actual limit is further reduced\n\
11430 dependent on the target. Specify ``fixed'' to disable the\n\
11431 further restriction and ``limit'' to enable that restriction."),
11432 &remote_set_cmdlist
);
11433 add_cmd ("memory-write-packet-size", no_class
,
11434 show_memory_write_packet_size
,
11435 _("Show the maximum number of bytes per memory-write packet."),
11436 &remote_show_cmdlist
);
11437 add_cmd ("memory-read-packet-size", no_class
,
11438 show_memory_read_packet_size
,
11439 _("Show the maximum number of bytes per memory-read packet."),
11440 &remote_show_cmdlist
);
11442 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11443 &remote_hw_watchpoint_limit
, _("\
11444 Set the maximum number of target hardware watchpoints."), _("\
11445 Show the maximum number of target hardware watchpoints."), _("\
11446 Specify a negative limit for unlimited."),
11447 NULL
, NULL
, /* FIXME: i18n: The maximum
11448 number of target hardware
11449 watchpoints is %s. */
11450 &remote_set_cmdlist
, &remote_show_cmdlist
);
11451 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11452 &remote_hw_watchpoint_length_limit
, _("\
11453 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11454 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11455 Specify a negative limit for unlimited."),
11456 NULL
, NULL
, /* FIXME: i18n: The maximum
11457 length (in bytes) of a target
11458 hardware watchpoint is %s. */
11459 &remote_set_cmdlist
, &remote_show_cmdlist
);
11460 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11461 &remote_hw_breakpoint_limit
, _("\
11462 Set the maximum number of target hardware breakpoints."), _("\
11463 Show the maximum number of target hardware breakpoints."), _("\
11464 Specify a negative limit for unlimited."),
11465 NULL
, NULL
, /* FIXME: i18n: The maximum
11466 number of target hardware
11467 breakpoints is %s. */
11468 &remote_set_cmdlist
, &remote_show_cmdlist
);
11470 add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure
,
11471 &remote_address_size
, _("\
11472 Set the maximum size of the address (in bits) in a memory packet."), _("\
11473 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11475 NULL
, /* FIXME: i18n: */
11476 &setlist
, &showlist
);
11478 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11479 "X", "binary-download", 1);
11481 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11482 "vCont", "verbose-resume", 0);
11484 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11485 "QPassSignals", "pass-signals", 0);
11487 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11488 "QProgramSignals", "program-signals", 0);
11490 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11491 "qSymbol", "symbol-lookup", 0);
11493 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11494 "P", "set-register", 1);
11496 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11497 "p", "fetch-register", 1);
11499 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11500 "Z0", "software-breakpoint", 0);
11502 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11503 "Z1", "hardware-breakpoint", 0);
11505 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11506 "Z2", "write-watchpoint", 0);
11508 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11509 "Z3", "read-watchpoint", 0);
11511 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11512 "Z4", "access-watchpoint", 0);
11514 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11515 "qXfer:auxv:read", "read-aux-vector", 0);
11517 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11518 "qXfer:features:read", "target-features", 0);
11520 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11521 "qXfer:libraries:read", "library-info", 0);
11523 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11524 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11526 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11527 "qXfer:memory-map:read", "memory-map", 0);
11529 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11530 "qXfer:spu:read", "read-spu-object", 0);
11532 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11533 "qXfer:spu:write", "write-spu-object", 0);
11535 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11536 "qXfer:osdata:read", "osdata", 0);
11538 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11539 "qXfer:threads:read", "threads", 0);
11541 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11542 "qXfer:siginfo:read", "read-siginfo-object", 0);
11544 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11545 "qXfer:siginfo:write", "write-siginfo-object", 0);
11547 add_packet_config_cmd
11548 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11549 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11551 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11552 "qXfer:uib:read", "unwind-info-block", 0);
11554 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11555 "qGetTLSAddr", "get-thread-local-storage-address",
11558 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11559 "qGetTIBAddr", "get-thread-information-block-address",
11562 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11563 "bc", "reverse-continue", 0);
11565 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11566 "bs", "reverse-step", 0);
11568 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11569 "qSupported", "supported-packets", 0);
11571 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11572 "qSearch:memory", "search-memory", 0);
11574 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11575 "vFile:open", "hostio-open", 0);
11577 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11578 "vFile:pread", "hostio-pread", 0);
11580 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11581 "vFile:pwrite", "hostio-pwrite", 0);
11583 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11584 "vFile:close", "hostio-close", 0);
11586 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11587 "vFile:unlink", "hostio-unlink", 0);
11589 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11590 "vFile:readlink", "hostio-readlink", 0);
11592 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11593 "vAttach", "attach", 0);
11595 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11598 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11599 "QStartNoAckMode", "noack", 0);
11601 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11602 "vKill", "kill", 0);
11604 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11605 "qAttached", "query-attached", 0);
11607 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11608 "ConditionalTracepoints",
11609 "conditional-tracepoints", 0);
11611 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11612 "ConditionalBreakpoints",
11613 "conditional-breakpoints", 0);
11615 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11616 "BreakpointCommands",
11617 "breakpoint-commands", 0);
11619 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11620 "FastTracepoints", "fast-tracepoints", 0);
11622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11623 "TracepointSource", "TracepointSource", 0);
11625 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11626 "QAllow", "allow", 0);
11628 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11629 "StaticTracepoints", "static-tracepoints", 0);
11631 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11632 "InstallInTrace", "install-in-trace", 0);
11634 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11635 "qXfer:statictrace:read", "read-sdata-object", 0);
11637 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11638 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11640 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11641 "QDisableRandomization", "disable-randomization", 0);
11643 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11644 "QAgent", "agent", 0);
11646 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11647 Z sub-packet has its own set and show commands, but users may
11648 have sets to this variable in their .gdbinit files (or in their
11650 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11651 &remote_Z_packet_detect
, _("\
11652 Set use of remote protocol `Z' packets"), _("\
11653 Show use of remote protocol `Z' packets "), _("\
11654 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11656 set_remote_protocol_Z_packet_cmd
,
11657 show_remote_protocol_Z_packet_cmd
,
11658 /* FIXME: i18n: Use of remote protocol
11659 `Z' packets is %s. */
11660 &remote_set_cmdlist
, &remote_show_cmdlist
);
11662 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11663 Manipulate files on the remote system\n\
11664 Transfer files to and from the remote target system."),
11665 &remote_cmdlist
, "remote ",
11666 0 /* allow-unknown */, &cmdlist
);
11668 add_cmd ("put", class_files
, remote_put_command
,
11669 _("Copy a local file to the remote system."),
11672 add_cmd ("get", class_files
, remote_get_command
,
11673 _("Copy a remote file to the local system."),
11676 add_cmd ("delete", class_files
, remote_delete_command
,
11677 _("Delete a remote file."),
11680 remote_exec_file
= xstrdup ("");
11681 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11682 &remote_exec_file
, _("\
11683 Set the remote pathname for \"run\""), _("\
11684 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11685 &remote_set_cmdlist
, &remote_show_cmdlist
);
11687 /* Eventually initialize fileio. See fileio.c */
11688 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11690 /* Take advantage of the fact that the LWP field is not used, to tag
11691 special ptids with it set to != 0. */
11692 magic_null_ptid
= ptid_build (42000, 1, -1);
11693 not_sent_ptid
= ptid_build (42000, 1, -2);
11694 any_thread_ptid
= ptid_build (42000, 1, 0);
11696 target_buf_size
= 2048;
11697 target_buf
= xmalloc (target_buf_size
);