1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2015 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. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.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"
72 /* Temp hacks for tracepoint encoding migration. */
73 static char *target_buf
;
74 static long target_buf_size
;
76 /* The size to align memory write packets, when practical. The protocol
77 does not guarantee any alignment, and gdb will generate short
78 writes and unaligned writes, but even as a best-effort attempt this
79 can improve bulk transfers. For instance, if a write is misaligned
80 relative to the target's data bus, the stub may need to make an extra
81 round trip fetching data from the target. This doesn't make a
82 huge difference, but it's easy to do, so we try to be helpful.
84 The alignment chosen is arbitrary; usually data bus width is
85 important here, not the possibly larger cache line size. */
86 enum { REMOTE_ALIGN_WRITES
= 16 };
88 /* Prototypes for local functions. */
89 static void async_cleanup_sigint_signal_handler (void *dummy
);
90 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
91 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
92 int forever
, int *is_notif
);
94 static void async_handle_remote_sigint (int);
95 static void async_handle_remote_sigint_twice (int);
97 static void remote_files_info (struct target_ops
*ignore
);
99 static void remote_prepare_to_store (struct target_ops
*self
,
100 struct regcache
*regcache
);
102 static void remote_open_1 (const char *, int, struct target_ops
*,
105 static void remote_close (struct target_ops
*self
);
107 static void remote_mourn (struct target_ops
*ops
);
109 static void extended_remote_restart (void);
111 static void extended_remote_mourn (struct target_ops
*);
113 static void remote_mourn_1 (struct target_ops
*);
115 static void remote_send (char **buf
, long *sizeof_buf_p
);
117 static int readchar (int timeout
);
119 static void remote_serial_write (const char *str
, int len
);
121 static void remote_kill (struct target_ops
*ops
);
123 static int remote_can_async_p (struct target_ops
*);
125 static int remote_is_async_p (struct target_ops
*);
127 static void remote_async (struct target_ops
*ops
,
128 void (*callback
) (enum inferior_event_type event_type
,
132 static void sync_remote_interrupt_twice (int signo
);
134 static void interrupt_query (void);
136 static void set_general_thread (struct ptid ptid
);
137 static void set_continue_thread (struct ptid ptid
);
139 static void get_offsets (void);
141 static void skip_frame (void);
143 static long read_frame (char **buf_p
, long *sizeof_buf
);
145 static int hexnumlen (ULONGEST num
);
147 static void init_remote_ops (void);
149 static void init_extended_remote_ops (void);
151 static void remote_stop (struct target_ops
*self
, ptid_t
);
153 static int stubhex (int ch
);
155 static int hexnumstr (char *, ULONGEST
);
157 static int hexnumnstr (char *, ULONGEST
, int);
159 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
161 static void print_packet (const char *);
163 static void compare_sections_command (char *, int);
165 static void packet_command (char *, int);
167 static int stub_unpack_int (char *buff
, int fieldlength
);
169 static ptid_t
remote_current_thread (ptid_t oldptid
);
171 static int putpkt_binary (const char *buf
, int cnt
);
173 static void check_binary_download (CORE_ADDR addr
);
175 struct packet_config
;
177 static void show_packet_config_cmd (struct packet_config
*config
);
179 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
181 struct cmd_list_element
*c
,
184 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
185 static ptid_t
read_ptid (char *buf
, char **obuf
);
187 static void remote_set_permissions (struct target_ops
*self
);
190 static int remote_get_trace_status (struct target_ops
*self
,
191 struct trace_status
*ts
);
193 static int remote_upload_tracepoints (struct target_ops
*self
,
194 struct uploaded_tp
**utpp
);
196 static int remote_upload_trace_state_variables (struct target_ops
*self
,
197 struct uploaded_tsv
**utsvp
);
199 static void remote_query_supported (void);
201 static void remote_check_symbols (void);
203 void _initialize_remote (void);
206 static void stop_reply_xfree (struct stop_reply
*);
207 static void remote_parse_stop_reply (char *, struct stop_reply
*);
208 static void push_stop_reply (struct stop_reply
*);
209 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
210 static int peek_stop_reply (ptid_t ptid
);
212 static void remote_async_inferior_event_handler (gdb_client_data
);
214 static void remote_terminal_ours (struct target_ops
*self
);
216 static int remote_read_description_p (struct target_ops
*target
);
218 static void remote_console_output (char *msg
);
220 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
222 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
224 static void remote_btrace_reset (void);
228 static struct cmd_list_element
*remote_cmdlist
;
230 /* For "set remote" and "show remote". */
232 static struct cmd_list_element
*remote_set_cmdlist
;
233 static struct cmd_list_element
*remote_show_cmdlist
;
235 /* Stub vCont actions support.
237 Each field is a boolean flag indicating whether the stub reports
238 support for the corresponding action. */
240 struct vCont_action_support
249 /* Controls whether GDB is willing to use range stepping. */
251 static int use_range_stepping
= 1;
253 #define OPAQUETHREADBYTES 8
255 /* a 64 bit opaque identifier */
256 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
258 /* About this many threadisds fit in a packet. */
260 #define MAXTHREADLISTRESULTS 32
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 we resumed the target and we're waiting for the target to
305 stop. In the mean time, we can't start another command/query.
306 The remote server wouldn't be ready to process it, so we'd
307 timeout waiting for a reply that would never come and eventually
308 we'd close the connection. This can happen in asynchronous mode
309 because we allow GDB commands while the target is running. */
310 int waiting_for_stop_reply
;
312 /* The status of the stub support for the various vCont actions. */
313 struct vCont_action_support supports_vCont
;
315 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
316 responded to that. */
319 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
320 remote_open knows that we don't have a file open when the program
322 struct serial
*remote_desc
;
324 /* These are the threads which we last sent to the remote system. The
325 TID member will be -1 for all or -2 for not sent yet. */
326 ptid_t general_thread
;
327 ptid_t continue_thread
;
329 /* This is the traceframe which we last selected on the remote system.
330 It will be -1 if no traceframe is selected. */
331 int remote_traceframe_number
;
333 char *last_pass_packet
;
335 /* The last QProgramSignals packet sent to the target. We bypass
336 sending a new program signals list down to the target if the new
337 packet is exactly the same as the last we sent. IOW, we only let
338 the target know about program signals list changes. */
339 char *last_program_signals_packet
;
341 enum gdb_signal last_sent_signal
;
345 char *finished_object
;
346 char *finished_annex
;
347 ULONGEST finished_offset
;
349 /* Should we try the 'ThreadInfo' query packet?
351 This variable (NOT available to the user: auto-detect only!)
352 determines whether GDB will use the new, simpler "ThreadInfo"
353 query or the older, more complex syntax for thread queries.
354 This is an auto-detect variable (set to true at each connect,
355 and set to false when the target fails to recognize it). */
356 int use_threadinfo_query
;
357 int use_threadextra_query
;
359 void (*async_client_callback
) (enum inferior_event_type event_type
,
361 void *async_client_context
;
363 /* This is set to the data address of the access causing the target
364 to stop for a watchpoint. */
365 CORE_ADDR remote_watch_data_address
;
367 /* Whether the target stopped for a breakpoint/watchpoint. */
368 enum target_stop_reason stop_reason
;
370 threadref echo_nextthread
;
371 threadref nextthread
;
372 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
374 /* The state of remote notification. */
375 struct remote_notif_state
*notif_state
;
377 /* The branch trace configuration. */
378 struct btrace_config btrace_config
;
381 /* Private data that we'll store in (struct thread_info)->private. */
382 struct private_thread_info
389 free_private_thread_info (struct private_thread_info
*info
)
395 /* This data could be associated with a target, but we do not always
396 have access to the current target when we need it, so for now it is
397 static. This will be fine for as long as only one target is in use
399 static struct remote_state
*remote_state
;
401 static struct remote_state
*
402 get_remote_state_raw (void)
407 /* Allocate a new struct remote_state with xmalloc, initialize it, and
410 static struct remote_state
*
411 new_remote_state (void)
413 struct remote_state
*result
= XCNEW (struct remote_state
);
415 /* The default buffer size is unimportant; it will be expanded
416 whenever a larger buffer is needed. */
417 result
->buf_size
= 400;
418 result
->buf
= xmalloc (result
->buf_size
);
419 result
->remote_traceframe_number
= -1;
420 result
->last_sent_signal
= GDB_SIGNAL_0
;
425 /* Description of the remote protocol for a given architecture. */
429 long offset
; /* Offset into G packet. */
430 long regnum
; /* GDB's internal register number. */
431 LONGEST pnum
; /* Remote protocol register number. */
432 int in_g_packet
; /* Always part of G packet. */
433 /* long size in bytes; == register_size (target_gdbarch (), regnum);
435 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
439 struct remote_arch_state
441 /* Description of the remote protocol registers. */
442 long sizeof_g_packet
;
444 /* Description of the remote protocol registers indexed by REGNUM
445 (making an array gdbarch_num_regs in size). */
446 struct packet_reg
*regs
;
448 /* This is the size (in chars) of the first response to the ``g''
449 packet. It is used as a heuristic when determining the maximum
450 size of memory-read and memory-write packets. A target will
451 typically only reserve a buffer large enough to hold the ``g''
452 packet. The size does not include packet overhead (headers and
454 long actual_register_packet_size
;
456 /* This is the maximum size (in chars) of a non read/write packet.
457 It is also used as a cap on the size of read/write packets. */
458 long remote_packet_size
;
461 /* Utility: generate error from an incoming stub packet. */
463 trace_error (char *buf
)
466 return; /* not an error msg */
469 case '1': /* malformed packet error */
470 if (*++buf
== '0') /* general case: */
471 error (_("remote.c: error in outgoing packet."));
473 error (_("remote.c: error in outgoing packet at field #%ld."),
474 strtol (buf
, NULL
, 16));
476 error (_("Target returns error code '%s'."), buf
);
480 /* Utility: wait for reply from stub, while accepting "O" packets. */
482 remote_get_noisy_reply (char **buf_p
,
485 do /* Loop on reply from remote stub. */
489 QUIT
; /* Allow user to bail out with ^C. */
490 getpkt (buf_p
, sizeof_buf
, 0);
494 else if (startswith (buf
, "qRelocInsn:"))
497 CORE_ADDR from
, to
, org_to
;
499 int adjusted_size
= 0;
502 p
= buf
+ strlen ("qRelocInsn:");
503 pp
= unpack_varlen_hex (p
, &ul
);
505 error (_("invalid qRelocInsn packet: %s"), buf
);
509 unpack_varlen_hex (p
, &ul
);
516 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
519 CATCH (ex
, RETURN_MASK_ALL
)
521 if (ex
.error
== MEMORY_ERROR
)
523 /* Propagate memory errors silently back to the
524 target. The stub may have limited the range of
525 addresses we can write to, for example. */
529 /* Something unexpectedly bad happened. Be verbose
530 so we can tell what, and propagate the error back
531 to the stub, so it doesn't get stuck waiting for
533 exception_fprintf (gdb_stderr
, ex
,
534 _("warning: relocating instruction: "));
542 adjusted_size
= to
- org_to
;
544 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
548 else if (buf
[0] == 'O' && buf
[1] != 'K')
549 remote_console_output (buf
+ 1); /* 'O' message from stub */
551 return buf
; /* Here's the actual reply. */
556 /* Handle for retreving the remote protocol data from gdbarch. */
557 static struct gdbarch_data
*remote_gdbarch_data_handle
;
559 static struct remote_arch_state
*
560 get_remote_arch_state (void)
562 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
565 /* Fetch the global remote target state. */
567 static struct remote_state
*
568 get_remote_state (void)
570 /* Make sure that the remote architecture state has been
571 initialized, because doing so might reallocate rs->buf. Any
572 function which calls getpkt also needs to be mindful of changes
573 to rs->buf, but this call limits the number of places which run
575 get_remote_arch_state ();
577 return get_remote_state_raw ();
581 compare_pnums (const void *lhs_
, const void *rhs_
)
583 const struct packet_reg
* const *lhs
= lhs_
;
584 const struct packet_reg
* const *rhs
= rhs_
;
586 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
588 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
595 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
597 int regnum
, num_remote_regs
, offset
;
598 struct packet_reg
**remote_regs
;
600 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
602 struct packet_reg
*r
= ®s
[regnum
];
604 if (register_size (gdbarch
, regnum
) == 0)
605 /* Do not try to fetch zero-sized (placeholder) registers. */
608 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
613 /* Define the g/G packet format as the contents of each register
614 with a remote protocol number, in order of ascending protocol
617 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
618 * sizeof (struct packet_reg
*));
619 for (num_remote_regs
= 0, regnum
= 0;
620 regnum
< gdbarch_num_regs (gdbarch
);
622 if (regs
[regnum
].pnum
!= -1)
623 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
625 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
628 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
630 remote_regs
[regnum
]->in_g_packet
= 1;
631 remote_regs
[regnum
]->offset
= offset
;
632 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
638 /* Given the architecture described by GDBARCH, return the remote
639 protocol register's number and the register's offset in the g/G
640 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
641 If the target does not have a mapping for REGNUM, return false,
642 otherwise, return true. */
645 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
646 int *pnum
, int *poffset
)
649 struct packet_reg
*regs
;
650 struct cleanup
*old_chain
;
652 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
654 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
655 old_chain
= make_cleanup (xfree
, regs
);
657 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
659 *pnum
= regs
[regnum
].pnum
;
660 *poffset
= regs
[regnum
].offset
;
662 do_cleanups (old_chain
);
668 init_remote_state (struct gdbarch
*gdbarch
)
670 struct remote_state
*rs
= get_remote_state_raw ();
671 struct remote_arch_state
*rsa
;
673 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
675 /* Use the architecture to build a regnum<->pnum table, which will be
676 1:1 unless a feature set specifies otherwise. */
677 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
678 gdbarch_num_regs (gdbarch
),
681 /* Record the maximum possible size of the g packet - it may turn out
683 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
685 /* Default maximum number of characters in a packet body. Many
686 remote stubs have a hardwired buffer size of 400 bytes
687 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
688 as the maximum packet-size to ensure that the packet and an extra
689 NUL character can always fit in the buffer. This stops GDB
690 trashing stubs that try to squeeze an extra NUL into what is
691 already a full buffer (As of 1999-12-04 that was most stubs). */
692 rsa
->remote_packet_size
= 400 - 1;
694 /* This one is filled in when a ``g'' packet is received. */
695 rsa
->actual_register_packet_size
= 0;
697 /* Should rsa->sizeof_g_packet needs more space than the
698 default, adjust the size accordingly. Remember that each byte is
699 encoded as two characters. 32 is the overhead for the packet
700 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
701 (``$NN:G...#NN'') is a better guess, the below has been padded a
703 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
704 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
706 /* Make sure that the packet buffer is plenty big enough for
707 this architecture. */
708 if (rs
->buf_size
< rsa
->remote_packet_size
)
710 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
711 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
717 /* Return the current allowed size of a remote packet. This is
718 inferred from the current architecture, and should be used to
719 limit the length of outgoing packets. */
721 get_remote_packet_size (void)
723 struct remote_state
*rs
= get_remote_state ();
724 struct remote_arch_state
*rsa
= get_remote_arch_state ();
726 if (rs
->explicit_packet_size
)
727 return rs
->explicit_packet_size
;
729 return rsa
->remote_packet_size
;
732 static struct packet_reg
*
733 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
735 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
739 struct packet_reg
*r
= &rsa
->regs
[regnum
];
741 gdb_assert (r
->regnum
== regnum
);
746 static struct packet_reg
*
747 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
751 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
753 struct packet_reg
*r
= &rsa
->regs
[i
];
761 static struct target_ops remote_ops
;
763 static struct target_ops extended_remote_ops
;
765 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
766 ``forever'' still use the normal timeout mechanism. This is
767 currently used by the ASYNC code to guarentee that target reads
768 during the initial connect always time-out. Once getpkt has been
769 modified to return a timeout indication and, in turn
770 remote_wait()/wait_for_inferior() have gained a timeout parameter
772 static int wait_forever_enabled_p
= 1;
774 /* Allow the user to specify what sequence to send to the remote
775 when he requests a program interruption: Although ^C is usually
776 what remote systems expect (this is the default, here), it is
777 sometimes preferable to send a break. On other systems such
778 as the Linux kernel, a break followed by g, which is Magic SysRq g
779 is required in order to interrupt the execution. */
780 const char interrupt_sequence_control_c
[] = "Ctrl-C";
781 const char interrupt_sequence_break
[] = "BREAK";
782 const char interrupt_sequence_break_g
[] = "BREAK-g";
783 static const char *const interrupt_sequence_modes
[] =
785 interrupt_sequence_control_c
,
786 interrupt_sequence_break
,
787 interrupt_sequence_break_g
,
790 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
793 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
794 struct cmd_list_element
*c
,
797 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
798 fprintf_filtered (file
,
799 _("Send the ASCII ETX character (Ctrl-c) "
800 "to the remote target to interrupt the "
801 "execution of the program.\n"));
802 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
803 fprintf_filtered (file
,
804 _("send a break signal to the remote target "
805 "to interrupt the execution of the program.\n"));
806 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
807 fprintf_filtered (file
,
808 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
809 "the remote target to interrupt the execution "
810 "of Linux kernel.\n"));
812 internal_error (__FILE__
, __LINE__
,
813 _("Invalid value for interrupt_sequence_mode: %s."),
814 interrupt_sequence_mode
);
817 /* This boolean variable specifies whether interrupt_sequence is sent
818 to the remote target when gdb connects to it.
819 This is mostly needed when you debug the Linux kernel: The Linux kernel
820 expects BREAK g which is Magic SysRq g for connecting gdb. */
821 static int interrupt_on_connect
= 0;
823 /* This variable is used to implement the "set/show remotebreak" commands.
824 Since these commands are now deprecated in favor of "set/show remote
825 interrupt-sequence", it no longer has any effect on the code. */
826 static int remote_break
;
829 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
832 interrupt_sequence_mode
= interrupt_sequence_break
;
834 interrupt_sequence_mode
= interrupt_sequence_control_c
;
838 show_remotebreak (struct ui_file
*file
, int from_tty
,
839 struct cmd_list_element
*c
,
844 /* This variable sets the number of bits in an address that are to be
845 sent in a memory ("M" or "m") packet. Normally, after stripping
846 leading zeros, the entire address would be sent. This variable
847 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
848 initial implementation of remote.c restricted the address sent in
849 memory packets to ``host::sizeof long'' bytes - (typically 32
850 bits). Consequently, for 64 bit targets, the upper 32 bits of an
851 address was never sent. Since fixing this bug may cause a break in
852 some remote targets this variable is principly provided to
853 facilitate backward compatibility. */
855 static unsigned int remote_address_size
;
857 /* Temporary to track who currently owns the terminal. See
858 remote_terminal_* for more details. */
860 static int remote_async_terminal_ours_p
;
862 /* The executable file to use for "run" on the remote side. */
864 static char *remote_exec_file
= "";
867 /* User configurable variables for the number of characters in a
868 memory read/write packet. MIN (rsa->remote_packet_size,
869 rsa->sizeof_g_packet) is the default. Some targets need smaller
870 values (fifo overruns, et.al.) and some users need larger values
871 (speed up transfers). The variables ``preferred_*'' (the user
872 request), ``current_*'' (what was actually set) and ``forced_*''
873 (Positive - a soft limit, negative - a hard limit). */
875 struct memory_packet_config
882 /* Compute the current size of a read/write packet. Since this makes
883 use of ``actual_register_packet_size'' the computation is dynamic. */
886 get_memory_packet_size (struct memory_packet_config
*config
)
888 struct remote_state
*rs
= get_remote_state ();
889 struct remote_arch_state
*rsa
= get_remote_arch_state ();
891 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
892 law?) that some hosts don't cope very well with large alloca()
893 calls. Eventually the alloca() code will be replaced by calls to
894 xmalloc() and make_cleanups() allowing this restriction to either
895 be lifted or removed. */
896 #ifndef MAX_REMOTE_PACKET_SIZE
897 #define MAX_REMOTE_PACKET_SIZE 16384
899 /* NOTE: 20 ensures we can write at least one byte. */
900 #ifndef MIN_REMOTE_PACKET_SIZE
901 #define MIN_REMOTE_PACKET_SIZE 20
906 if (config
->size
<= 0)
907 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
909 what_they_get
= config
->size
;
913 what_they_get
= get_remote_packet_size ();
914 /* Limit the packet to the size specified by the user. */
916 && what_they_get
> config
->size
)
917 what_they_get
= config
->size
;
919 /* Limit it to the size of the targets ``g'' response unless we have
920 permission from the stub to use a larger packet size. */
921 if (rs
->explicit_packet_size
== 0
922 && rsa
->actual_register_packet_size
> 0
923 && what_they_get
> rsa
->actual_register_packet_size
)
924 what_they_get
= rsa
->actual_register_packet_size
;
926 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
927 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
928 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
929 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
931 /* Make sure there is room in the global buffer for this packet
932 (including its trailing NUL byte). */
933 if (rs
->buf_size
< what_they_get
+ 1)
935 rs
->buf_size
= 2 * what_they_get
;
936 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
939 return what_they_get
;
942 /* Update the size of a read/write packet. If they user wants
943 something really big then do a sanity check. */
946 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
948 int fixed_p
= config
->fixed_p
;
949 long size
= config
->size
;
952 error (_("Argument required (integer, `fixed' or `limited')."));
953 else if (strcmp (args
, "hard") == 0
954 || strcmp (args
, "fixed") == 0)
956 else if (strcmp (args
, "soft") == 0
957 || strcmp (args
, "limit") == 0)
963 size
= strtoul (args
, &end
, 0);
965 error (_("Invalid %s (bad syntax)."), config
->name
);
967 /* Instead of explicitly capping the size of a packet to
968 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
969 instead allowed to set the size to something arbitrarily
971 if (size
> MAX_REMOTE_PACKET_SIZE
)
972 error (_("Invalid %s (too large)."), config
->name
);
976 if (fixed_p
&& !config
->fixed_p
)
978 if (! query (_("The target may not be able to correctly handle a %s\n"
979 "of %ld bytes. Change the packet size? "),
981 error (_("Packet size not changed."));
983 /* Update the config. */
984 config
->fixed_p
= fixed_p
;
989 show_memory_packet_size (struct memory_packet_config
*config
)
991 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
993 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
994 get_memory_packet_size (config
));
996 printf_filtered (_("Packets are limited to %ld bytes.\n"),
997 get_memory_packet_size (config
));
1000 static struct memory_packet_config memory_write_packet_config
=
1002 "memory-write-packet-size",
1006 set_memory_write_packet_size (char *args
, int from_tty
)
1008 set_memory_packet_size (args
, &memory_write_packet_config
);
1012 show_memory_write_packet_size (char *args
, int from_tty
)
1014 show_memory_packet_size (&memory_write_packet_config
);
1018 get_memory_write_packet_size (void)
1020 return get_memory_packet_size (&memory_write_packet_config
);
1023 static struct memory_packet_config memory_read_packet_config
=
1025 "memory-read-packet-size",
1029 set_memory_read_packet_size (char *args
, int from_tty
)
1031 set_memory_packet_size (args
, &memory_read_packet_config
);
1035 show_memory_read_packet_size (char *args
, int from_tty
)
1037 show_memory_packet_size (&memory_read_packet_config
);
1041 get_memory_read_packet_size (void)
1043 long size
= get_memory_packet_size (&memory_read_packet_config
);
1045 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1046 extra buffer size argument before the memory read size can be
1047 increased beyond this. */
1048 if (size
> get_remote_packet_size ())
1049 size
= get_remote_packet_size ();
1054 /* Generic configuration support for packets the stub optionally
1055 supports. Allows the user to specify the use of the packet as well
1056 as allowing GDB to auto-detect support in the remote stub. */
1060 PACKET_SUPPORT_UNKNOWN
= 0,
1065 struct packet_config
1070 /* If auto, GDB auto-detects support for this packet or feature,
1071 either through qSupported, or by trying the packet and looking
1072 at the response. If true, GDB assumes the target supports this
1073 packet. If false, the packet is disabled. Configs that don't
1074 have an associated command always have this set to auto. */
1075 enum auto_boolean detect
;
1077 /* Does the target support this packet? */
1078 enum packet_support support
;
1081 /* Analyze a packet's return value and update the packet config
1091 static enum packet_support
packet_config_support (struct packet_config
*config
);
1092 static enum packet_support
packet_support (int packet
);
1095 show_packet_config_cmd (struct packet_config
*config
)
1097 char *support
= "internal-error";
1099 switch (packet_config_support (config
))
1102 support
= "enabled";
1104 case PACKET_DISABLE
:
1105 support
= "disabled";
1107 case PACKET_SUPPORT_UNKNOWN
:
1108 support
= "unknown";
1111 switch (config
->detect
)
1113 case AUTO_BOOLEAN_AUTO
:
1114 printf_filtered (_("Support for the `%s' packet "
1115 "is auto-detected, currently %s.\n"),
1116 config
->name
, support
);
1118 case AUTO_BOOLEAN_TRUE
:
1119 case AUTO_BOOLEAN_FALSE
:
1120 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1121 config
->name
, support
);
1127 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1128 const char *title
, int legacy
)
1134 config
->name
= name
;
1135 config
->title
= title
;
1136 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1138 show_doc
= xstrprintf ("Show current use of remote "
1139 "protocol `%s' (%s) packet",
1141 /* set/show TITLE-packet {auto,on,off} */
1142 cmd_name
= xstrprintf ("%s-packet", title
);
1143 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1144 &config
->detect
, set_doc
,
1145 show_doc
, NULL
, /* help_doc */
1147 show_remote_protocol_packet_cmd
,
1148 &remote_set_cmdlist
, &remote_show_cmdlist
);
1149 /* The command code copies the documentation strings. */
1152 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1157 legacy_name
= xstrprintf ("%s-packet", name
);
1158 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1159 &remote_set_cmdlist
);
1160 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1161 &remote_show_cmdlist
);
1165 static enum packet_result
1166 packet_check_result (const char *buf
)
1170 /* The stub recognized the packet request. Check that the
1171 operation succeeded. */
1173 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1175 /* "Enn" - definitly an error. */
1176 return PACKET_ERROR
;
1178 /* Always treat "E." as an error. This will be used for
1179 more verbose error messages, such as E.memtypes. */
1180 if (buf
[0] == 'E' && buf
[1] == '.')
1181 return PACKET_ERROR
;
1183 /* The packet may or may not be OK. Just assume it is. */
1187 /* The stub does not support the packet. */
1188 return PACKET_UNKNOWN
;
1191 static enum packet_result
1192 packet_ok (const char *buf
, struct packet_config
*config
)
1194 enum packet_result result
;
1196 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1197 && config
->support
== PACKET_DISABLE
)
1198 internal_error (__FILE__
, __LINE__
,
1199 _("packet_ok: attempt to use a disabled packet"));
1201 result
= packet_check_result (buf
);
1206 /* The stub recognized the packet request. */
1207 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1210 fprintf_unfiltered (gdb_stdlog
,
1211 "Packet %s (%s) is supported\n",
1212 config
->name
, config
->title
);
1213 config
->support
= PACKET_ENABLE
;
1216 case PACKET_UNKNOWN
:
1217 /* The stub does not support the packet. */
1218 if (config
->detect
== AUTO_BOOLEAN_AUTO
1219 && config
->support
== PACKET_ENABLE
)
1221 /* If the stub previously indicated that the packet was
1222 supported then there is a protocol error. */
1223 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1224 config
->name
, config
->title
);
1226 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1228 /* The user set it wrong. */
1229 error (_("Enabled packet %s (%s) not recognized by stub"),
1230 config
->name
, config
->title
);
1234 fprintf_unfiltered (gdb_stdlog
,
1235 "Packet %s (%s) is NOT supported\n",
1236 config
->name
, config
->title
);
1237 config
->support
= PACKET_DISABLE
;
1257 PACKET_vFile_pwrite
,
1259 PACKET_vFile_unlink
,
1260 PACKET_vFile_readlink
,
1263 PACKET_qXfer_features
,
1264 PACKET_qXfer_libraries
,
1265 PACKET_qXfer_libraries_svr4
,
1266 PACKET_qXfer_memory_map
,
1267 PACKET_qXfer_spu_read
,
1268 PACKET_qXfer_spu_write
,
1269 PACKET_qXfer_osdata
,
1270 PACKET_qXfer_threads
,
1271 PACKET_qXfer_statictrace_read
,
1272 PACKET_qXfer_traceframe_info
,
1278 PACKET_QPassSignals
,
1279 PACKET_QProgramSignals
,
1281 PACKET_qSearch_memory
,
1284 PACKET_QStartNoAckMode
,
1286 PACKET_qXfer_siginfo_read
,
1287 PACKET_qXfer_siginfo_write
,
1290 /* Support for conditional tracepoints. */
1291 PACKET_ConditionalTracepoints
,
1293 /* Support for target-side breakpoint conditions. */
1294 PACKET_ConditionalBreakpoints
,
1296 /* Support for target-side breakpoint commands. */
1297 PACKET_BreakpointCommands
,
1299 /* Support for fast tracepoints. */
1300 PACKET_FastTracepoints
,
1302 /* Support for static tracepoints. */
1303 PACKET_StaticTracepoints
,
1305 /* Support for installing tracepoints while a trace experiment is
1307 PACKET_InstallInTrace
,
1311 PACKET_TracepointSource
,
1314 PACKET_QDisableRandomization
,
1316 PACKET_QTBuffer_size
,
1319 PACKET_qXfer_btrace
,
1321 /* Support for the QNonStop packet. */
1324 /* Support for multi-process extensions. */
1325 PACKET_multiprocess_feature
,
1327 /* Support for enabling and disabling tracepoints while a trace
1328 experiment is running. */
1329 PACKET_EnableDisableTracepoints_feature
,
1331 /* Support for collecting strings using the tracenz bytecode. */
1332 PACKET_tracenz_feature
,
1334 /* Support for continuing to run a trace experiment while GDB is
1336 PACKET_DisconnectedTracing_feature
,
1338 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1339 PACKET_augmented_libraries_svr4_read_feature
,
1341 /* Support for the qXfer:btrace-conf:read packet. */
1342 PACKET_qXfer_btrace_conf
,
1344 /* Support for the Qbtrace-conf:bts:size packet. */
1345 PACKET_Qbtrace_conf_bts_size
,
1347 /* Support for swbreak+ feature. */
1348 PACKET_swbreak_feature
,
1350 /* Support for hwbreak+ feature. */
1351 PACKET_hwbreak_feature
,
1356 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1358 /* Returns the packet's corresponding "set remote foo-packet" command
1359 state. See struct packet_config for more details. */
1361 static enum auto_boolean
1362 packet_set_cmd_state (int packet
)
1364 return remote_protocol_packets
[packet
].detect
;
1367 /* Returns whether a given packet or feature is supported. This takes
1368 into account the state of the corresponding "set remote foo-packet"
1369 command, which may be used to bypass auto-detection. */
1371 static enum packet_support
1372 packet_config_support (struct packet_config
*config
)
1374 switch (config
->detect
)
1376 case AUTO_BOOLEAN_TRUE
:
1377 return PACKET_ENABLE
;
1378 case AUTO_BOOLEAN_FALSE
:
1379 return PACKET_DISABLE
;
1380 case AUTO_BOOLEAN_AUTO
:
1381 return config
->support
;
1383 gdb_assert_not_reached (_("bad switch"));
1387 /* Same as packet_config_support, but takes the packet's enum value as
1390 static enum packet_support
1391 packet_support (int packet
)
1393 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1395 return packet_config_support (config
);
1399 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1400 struct cmd_list_element
*c
,
1403 struct packet_config
*packet
;
1405 for (packet
= remote_protocol_packets
;
1406 packet
< &remote_protocol_packets
[PACKET_MAX
];
1409 if (&packet
->detect
== c
->var
)
1411 show_packet_config_cmd (packet
);
1415 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1419 /* Should we try one of the 'Z' requests? */
1423 Z_PACKET_SOFTWARE_BP
,
1424 Z_PACKET_HARDWARE_BP
,
1431 /* For compatibility with older distributions. Provide a ``set remote
1432 Z-packet ...'' command that updates all the Z packet types. */
1434 static enum auto_boolean remote_Z_packet_detect
;
1437 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1438 struct cmd_list_element
*c
)
1442 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1443 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1447 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1448 struct cmd_list_element
*c
,
1453 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1455 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1459 /* Returns true if the multi-process extensions are in effect. */
1462 remote_multi_process_p (struct remote_state
*rs
)
1464 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1467 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1468 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1469 static struct async_signal_handler
*async_sigint_remote_token
;
1472 /* Asynchronous signal handle registered as event loop source for
1473 when we have pending events ready to be passed to the core. */
1475 static struct async_event_handler
*remote_async_inferior_event_token
;
1479 static ptid_t magic_null_ptid
;
1480 static ptid_t not_sent_ptid
;
1481 static ptid_t any_thread_ptid
;
1483 /* Find out if the stub attached to PID (and hence GDB should offer to
1484 detach instead of killing it when bailing out). */
1487 remote_query_attached (int pid
)
1489 struct remote_state
*rs
= get_remote_state ();
1490 size_t size
= get_remote_packet_size ();
1492 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1495 if (remote_multi_process_p (rs
))
1496 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1498 xsnprintf (rs
->buf
, size
, "qAttached");
1501 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1503 switch (packet_ok (rs
->buf
,
1504 &remote_protocol_packets
[PACKET_qAttached
]))
1507 if (strcmp (rs
->buf
, "1") == 0)
1511 warning (_("Remote failure reply: %s"), rs
->buf
);
1513 case PACKET_UNKNOWN
:
1520 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1521 has been invented by GDB, instead of reported by the target. Since
1522 we can be connected to a remote system before before knowing about
1523 any inferior, mark the target with execution when we find the first
1524 inferior. If ATTACHED is 1, then we had just attached to this
1525 inferior. If it is 0, then we just created this inferior. If it
1526 is -1, then try querying the remote stub to find out if it had
1527 attached to the inferior or not. */
1529 static struct inferior
*
1530 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1532 struct inferior
*inf
;
1534 /* Check whether this process we're learning about is to be
1535 considered attached, or if is to be considered to have been
1536 spawned by the stub. */
1538 attached
= remote_query_attached (pid
);
1540 if (gdbarch_has_global_solist (target_gdbarch ()))
1542 /* If the target shares code across all inferiors, then every
1543 attach adds a new inferior. */
1544 inf
= add_inferior (pid
);
1546 /* ... and every inferior is bound to the same program space.
1547 However, each inferior may still have its own address
1549 inf
->aspace
= maybe_new_address_space ();
1550 inf
->pspace
= current_program_space
;
1554 /* In the traditional debugging scenario, there's a 1-1 match
1555 between program/address spaces. We simply bind the inferior
1556 to the program space's address space. */
1557 inf
= current_inferior ();
1558 inferior_appeared (inf
, pid
);
1561 inf
->attach_flag
= attached
;
1562 inf
->fake_pid_p
= fake_pid_p
;
1567 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1568 according to RUNNING. */
1571 remote_add_thread (ptid_t ptid
, int running
)
1573 struct remote_state
*rs
= get_remote_state ();
1575 /* GDB historically didn't pull threads in the initial connection
1576 setup. If the remote target doesn't even have a concept of
1577 threads (e.g., a bare-metal target), even if internally we
1578 consider that a single-threaded target, mentioning a new thread
1579 might be confusing to the user. Be silent then, preserving the
1580 age old behavior. */
1581 if (rs
->starting_up
)
1582 add_thread_silent (ptid
);
1586 set_executing (ptid
, running
);
1587 set_running (ptid
, running
);
1590 /* Come here when we learn about a thread id from the remote target.
1591 It may be the first time we hear about such thread, so take the
1592 opportunity to add it to GDB's thread list. In case this is the
1593 first time we're noticing its corresponding inferior, add it to
1594 GDB's inferior list as well. */
1597 remote_notice_new_inferior (ptid_t currthread
, int running
)
1599 /* If this is a new thread, add it to GDB's thread list.
1600 If we leave it up to WFI to do this, bad things will happen. */
1602 if (in_thread_list (currthread
) && is_exited (currthread
))
1604 /* We're seeing an event on a thread id we knew had exited.
1605 This has to be a new thread reusing the old id. Add it. */
1606 remote_add_thread (currthread
, running
);
1610 if (!in_thread_list (currthread
))
1612 struct inferior
*inf
= NULL
;
1613 int pid
= ptid_get_pid (currthread
);
1615 if (ptid_is_pid (inferior_ptid
)
1616 && pid
== ptid_get_pid (inferior_ptid
))
1618 /* inferior_ptid has no thread member yet. This can happen
1619 with the vAttach -> remote_wait,"TAAthread:" path if the
1620 stub doesn't support qC. This is the first stop reported
1621 after an attach, so this is the main thread. Update the
1622 ptid in the thread list. */
1623 if (in_thread_list (pid_to_ptid (pid
)))
1624 thread_change_ptid (inferior_ptid
, currthread
);
1627 remote_add_thread (currthread
, running
);
1628 inferior_ptid
= currthread
;
1633 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1635 /* inferior_ptid is not set yet. This can happen with the
1636 vRun -> remote_wait,"TAAthread:" path if the stub
1637 doesn't support qC. This is the first stop reported
1638 after an attach, so this is the main thread. Update the
1639 ptid in the thread list. */
1640 thread_change_ptid (inferior_ptid
, currthread
);
1644 /* When connecting to a target remote, or to a target
1645 extended-remote which already was debugging an inferior, we
1646 may not know about it yet. Add it before adding its child
1647 thread, so notifications are emitted in a sensible order. */
1648 if (!in_inferior_list (ptid_get_pid (currthread
)))
1650 struct remote_state
*rs
= get_remote_state ();
1651 int fake_pid_p
= !remote_multi_process_p (rs
);
1653 inf
= remote_add_inferior (fake_pid_p
,
1654 ptid_get_pid (currthread
), -1);
1657 /* This is really a new thread. Add it. */
1658 remote_add_thread (currthread
, running
);
1660 /* If we found a new inferior, let the common code do whatever
1661 it needs to with it (e.g., read shared libraries, insert
1662 breakpoints), unless we're just setting up an all-stop
1666 struct remote_state
*rs
= get_remote_state ();
1668 if (non_stop
|| !rs
->starting_up
)
1669 notice_new_inferior (currthread
, running
, 0);
1674 /* Return the private thread data, creating it if necessary. */
1676 static struct private_thread_info
*
1677 demand_private_info (ptid_t ptid
)
1679 struct thread_info
*info
= find_thread_ptid (ptid
);
1685 info
->priv
= xmalloc (sizeof (*(info
->priv
)));
1686 info
->private_dtor
= free_private_thread_info
;
1687 info
->priv
->core
= -1;
1688 info
->priv
->extra
= 0;
1694 /* Call this function as a result of
1695 1) A halt indication (T packet) containing a thread id
1696 2) A direct query of currthread
1697 3) Successful execution of set thread */
1700 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1702 rs
->general_thread
= currthread
;
1705 /* If 'QPassSignals' is supported, tell the remote stub what signals
1706 it can simply pass through to the inferior without reporting. */
1709 remote_pass_signals (struct target_ops
*self
,
1710 int numsigs
, unsigned char *pass_signals
)
1712 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1714 char *pass_packet
, *p
;
1716 struct remote_state
*rs
= get_remote_state ();
1718 gdb_assert (numsigs
< 256);
1719 for (i
= 0; i
< numsigs
; i
++)
1721 if (pass_signals
[i
])
1724 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1725 strcpy (pass_packet
, "QPassSignals:");
1726 p
= pass_packet
+ strlen (pass_packet
);
1727 for (i
= 0; i
< numsigs
; i
++)
1729 if (pass_signals
[i
])
1732 *p
++ = tohex (i
>> 4);
1733 *p
++ = tohex (i
& 15);
1742 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1744 putpkt (pass_packet
);
1745 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1746 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1747 if (rs
->last_pass_packet
)
1748 xfree (rs
->last_pass_packet
);
1749 rs
->last_pass_packet
= pass_packet
;
1752 xfree (pass_packet
);
1756 /* If 'QProgramSignals' is supported, tell the remote stub what
1757 signals it should pass through to the inferior when detaching. */
1760 remote_program_signals (struct target_ops
*self
,
1761 int numsigs
, unsigned char *signals
)
1763 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
1767 struct remote_state
*rs
= get_remote_state ();
1769 gdb_assert (numsigs
< 256);
1770 for (i
= 0; i
< numsigs
; i
++)
1775 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1776 strcpy (packet
, "QProgramSignals:");
1777 p
= packet
+ strlen (packet
);
1778 for (i
= 0; i
< numsigs
; i
++)
1780 if (signal_pass_state (i
))
1783 *p
++ = tohex (i
>> 4);
1784 *p
++ = tohex (i
& 15);
1793 if (!rs
->last_program_signals_packet
1794 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1797 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1798 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1799 xfree (rs
->last_program_signals_packet
);
1800 rs
->last_program_signals_packet
= packet
;
1807 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1808 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1809 thread. If GEN is set, set the general thread, if not, then set
1810 the step/continue thread. */
1812 set_thread (struct ptid ptid
, int gen
)
1814 struct remote_state
*rs
= get_remote_state ();
1815 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1816 char *buf
= rs
->buf
;
1817 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1819 if (ptid_equal (state
, ptid
))
1823 *buf
++ = gen
? 'g' : 'c';
1824 if (ptid_equal (ptid
, magic_null_ptid
))
1825 xsnprintf (buf
, endbuf
- buf
, "0");
1826 else if (ptid_equal (ptid
, any_thread_ptid
))
1827 xsnprintf (buf
, endbuf
- buf
, "0");
1828 else if (ptid_equal (ptid
, minus_one_ptid
))
1829 xsnprintf (buf
, endbuf
- buf
, "-1");
1831 write_ptid (buf
, endbuf
, ptid
);
1833 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1835 rs
->general_thread
= ptid
;
1837 rs
->continue_thread
= ptid
;
1841 set_general_thread (struct ptid ptid
)
1843 set_thread (ptid
, 1);
1847 set_continue_thread (struct ptid ptid
)
1849 set_thread (ptid
, 0);
1852 /* Change the remote current process. Which thread within the process
1853 ends up selected isn't important, as long as it is the same process
1854 as what INFERIOR_PTID points to.
1856 This comes from that fact that there is no explicit notion of
1857 "selected process" in the protocol. The selected process for
1858 general operations is the process the selected general thread
1862 set_general_process (void)
1864 struct remote_state
*rs
= get_remote_state ();
1866 /* If the remote can't handle multiple processes, don't bother. */
1867 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1870 /* We only need to change the remote current thread if it's pointing
1871 at some other process. */
1872 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1873 set_general_thread (inferior_ptid
);
1877 /* Return nonzero if this is the main thread that we made up ourselves
1878 to model non-threaded targets as single-threaded. */
1881 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
1883 struct remote_state
*rs
= get_remote_state ();
1886 if (ptid_equal (ptid
, magic_null_ptid
))
1887 /* The main thread is always alive. */
1890 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
1891 /* The main thread is always alive. This can happen after a
1892 vAttach, if the remote side doesn't support
1899 /* Return nonzero if the thread PTID is still alive on the remote
1903 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1905 struct remote_state
*rs
= get_remote_state ();
1908 /* Check if this is a thread that we made up ourselves to model
1909 non-threaded targets as single-threaded. */
1910 if (remote_thread_always_alive (ops
, ptid
))
1914 endp
= rs
->buf
+ get_remote_packet_size ();
1917 write_ptid (p
, endp
, ptid
);
1920 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1921 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1924 /* About these extended threadlist and threadinfo packets. They are
1925 variable length packets but, the fields within them are often fixed
1926 length. They are redundent enough to send over UDP as is the
1927 remote protocol in general. There is a matching unit test module
1930 /* WARNING: This threadref data structure comes from the remote O.S.,
1931 libstub protocol encoding, and remote.c. It is not particularly
1934 /* Right now, the internal structure is int. We want it to be bigger.
1935 Plan to fix this. */
1937 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1939 /* gdb_ext_thread_info is an internal GDB data structure which is
1940 equivalent to the reply of the remote threadinfo packet. */
1942 struct gdb_ext_thread_info
1944 threadref threadid
; /* External form of thread reference. */
1945 int active
; /* Has state interesting to GDB?
1947 char display
[256]; /* Brief state display, name,
1948 blocked/suspended. */
1949 char shortname
[32]; /* To be used to name threads. */
1950 char more_display
[256]; /* Long info, statistics, queue depth,
1954 /* The volume of remote transfers can be limited by submitting
1955 a mask containing bits specifying the desired information.
1956 Use a union of these values as the 'selection' parameter to
1957 get_thread_info. FIXME: Make these TAG names more thread specific. */
1959 #define TAG_THREADID 1
1960 #define TAG_EXISTS 2
1961 #define TAG_DISPLAY 4
1962 #define TAG_THREADNAME 8
1963 #define TAG_MOREDISPLAY 16
1965 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1967 static char *unpack_nibble (char *buf
, int *val
);
1969 static char *unpack_byte (char *buf
, int *value
);
1971 static char *pack_int (char *buf
, int value
);
1973 static char *unpack_int (char *buf
, int *value
);
1975 static char *unpack_string (char *src
, char *dest
, int length
);
1977 static char *pack_threadid (char *pkt
, threadref
*id
);
1979 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1981 void int_to_threadref (threadref
*id
, int value
);
1983 static int threadref_to_int (threadref
*ref
);
1985 static void copy_threadref (threadref
*dest
, threadref
*src
);
1987 static int threadmatch (threadref
*dest
, threadref
*src
);
1989 static char *pack_threadinfo_request (char *pkt
, int mode
,
1992 static int remote_unpack_thread_info_response (char *pkt
,
1993 threadref
*expectedref
,
1994 struct gdb_ext_thread_info
1998 static int remote_get_threadinfo (threadref
*threadid
,
1999 int fieldset
, /*TAG mask */
2000 struct gdb_ext_thread_info
*info
);
2002 static char *pack_threadlist_request (char *pkt
, int startflag
,
2004 threadref
*nextthread
);
2006 static int parse_threadlist_response (char *pkt
,
2008 threadref
*original_echo
,
2009 threadref
*resultlist
,
2012 static int remote_get_threadlist (int startflag
,
2013 threadref
*nextthread
,
2017 threadref
*threadlist
);
2019 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2021 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2022 void *context
, int looplimit
);
2024 static int remote_newthread_step (threadref
*ref
, void *context
);
2027 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2028 buffer we're allowed to write to. Returns
2029 BUF+CHARACTERS_WRITTEN. */
2032 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2035 struct remote_state
*rs
= get_remote_state ();
2037 if (remote_multi_process_p (rs
))
2039 pid
= ptid_get_pid (ptid
);
2041 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2043 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2045 tid
= ptid_get_lwp (ptid
);
2047 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2049 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2054 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2055 passed the last parsed char. Returns null_ptid on error. */
2058 read_ptid (char *buf
, char **obuf
)
2062 ULONGEST pid
= 0, tid
= 0;
2066 /* Multi-process ptid. */
2067 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2069 error (_("invalid remote ptid: %s"), p
);
2072 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2075 return ptid_build (pid
, tid
, 0);
2078 /* No multi-process. Just a tid. */
2079 pp
= unpack_varlen_hex (p
, &tid
);
2081 /* Since the stub is not sending a process id, then default to
2082 what's in inferior_ptid, unless it's null at this point. If so,
2083 then since there's no way to know the pid of the reported
2084 threads, use the magic number. */
2085 if (ptid_equal (inferior_ptid
, null_ptid
))
2086 pid
= ptid_get_pid (magic_null_ptid
);
2088 pid
= ptid_get_pid (inferior_ptid
);
2092 return ptid_build (pid
, tid
, 0);
2098 if (ch
>= 'a' && ch
<= 'f')
2099 return ch
- 'a' + 10;
2100 if (ch
>= '0' && ch
<= '9')
2102 if (ch
>= 'A' && ch
<= 'F')
2103 return ch
- 'A' + 10;
2108 stub_unpack_int (char *buff
, int fieldlength
)
2115 nibble
= stubhex (*buff
++);
2119 retval
= retval
<< 4;
2125 unpack_nibble (char *buf
, int *val
)
2127 *val
= fromhex (*buf
++);
2132 unpack_byte (char *buf
, int *value
)
2134 *value
= stub_unpack_int (buf
, 2);
2139 pack_int (char *buf
, int value
)
2141 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2142 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2143 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2144 buf
= pack_hex_byte (buf
, (value
& 0xff));
2149 unpack_int (char *buf
, int *value
)
2151 *value
= stub_unpack_int (buf
, 8);
2155 #if 0 /* Currently unused, uncomment when needed. */
2156 static char *pack_string (char *pkt
, char *string
);
2159 pack_string (char *pkt
, char *string
)
2164 len
= strlen (string
);
2166 len
= 200; /* Bigger than most GDB packets, junk??? */
2167 pkt
= pack_hex_byte (pkt
, len
);
2171 if ((ch
== '\0') || (ch
== '#'))
2172 ch
= '*'; /* Protect encapsulation. */
2177 #endif /* 0 (unused) */
2180 unpack_string (char *src
, char *dest
, int length
)
2189 pack_threadid (char *pkt
, threadref
*id
)
2192 unsigned char *altid
;
2194 altid
= (unsigned char *) id
;
2195 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2197 pkt
= pack_hex_byte (pkt
, *altid
++);
2203 unpack_threadid (char *inbuf
, threadref
*id
)
2206 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2209 altref
= (char *) id
;
2211 while (inbuf
< limit
)
2213 x
= stubhex (*inbuf
++);
2214 y
= stubhex (*inbuf
++);
2215 *altref
++ = (x
<< 4) | y
;
2220 /* Externally, threadrefs are 64 bits but internally, they are still
2221 ints. This is due to a mismatch of specifications. We would like
2222 to use 64bit thread references internally. This is an adapter
2226 int_to_threadref (threadref
*id
, int value
)
2228 unsigned char *scan
;
2230 scan
= (unsigned char *) id
;
2236 *scan
++ = (value
>> 24) & 0xff;
2237 *scan
++ = (value
>> 16) & 0xff;
2238 *scan
++ = (value
>> 8) & 0xff;
2239 *scan
++ = (value
& 0xff);
2243 threadref_to_int (threadref
*ref
)
2246 unsigned char *scan
;
2252 value
= (value
<< 8) | ((*scan
++) & 0xff);
2257 copy_threadref (threadref
*dest
, threadref
*src
)
2260 unsigned char *csrc
, *cdest
;
2262 csrc
= (unsigned char *) src
;
2263 cdest
= (unsigned char *) dest
;
2270 threadmatch (threadref
*dest
, threadref
*src
)
2272 /* Things are broken right now, so just assume we got a match. */
2274 unsigned char *srcp
, *destp
;
2276 srcp
= (char *) src
;
2277 destp
= (char *) dest
;
2281 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2288 threadid:1, # always request threadid
2295 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2298 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2300 *pkt
++ = 'q'; /* Info Query */
2301 *pkt
++ = 'P'; /* process or thread info */
2302 pkt
= pack_int (pkt
, mode
); /* mode */
2303 pkt
= pack_threadid (pkt
, id
); /* threadid */
2304 *pkt
= '\0'; /* terminate */
2308 /* These values tag the fields in a thread info response packet. */
2309 /* Tagging the fields allows us to request specific fields and to
2310 add more fields as time goes by. */
2312 #define TAG_THREADID 1 /* Echo the thread identifier. */
2313 #define TAG_EXISTS 2 /* Is this process defined enough to
2314 fetch registers and its stack? */
2315 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2316 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2317 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2321 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2322 struct gdb_ext_thread_info
*info
)
2324 struct remote_state
*rs
= get_remote_state ();
2328 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2331 /* info->threadid = 0; FIXME: implement zero_threadref. */
2333 info
->display
[0] = '\0';
2334 info
->shortname
[0] = '\0';
2335 info
->more_display
[0] = '\0';
2337 /* Assume the characters indicating the packet type have been
2339 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2340 pkt
= unpack_threadid (pkt
, &ref
);
2343 warning (_("Incomplete response to threadinfo request."));
2344 if (!threadmatch (&ref
, expectedref
))
2345 { /* This is an answer to a different request. */
2346 warning (_("ERROR RMT Thread info mismatch."));
2349 copy_threadref (&info
->threadid
, &ref
);
2351 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2353 /* Packets are terminated with nulls. */
2354 while ((pkt
< limit
) && mask
&& *pkt
)
2356 pkt
= unpack_int (pkt
, &tag
); /* tag */
2357 pkt
= unpack_byte (pkt
, &length
); /* length */
2358 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2360 warning (_("ERROR RMT: threadinfo tag mismatch."));
2364 if (tag
== TAG_THREADID
)
2368 warning (_("ERROR RMT: length of threadid is not 16."));
2372 pkt
= unpack_threadid (pkt
, &ref
);
2373 mask
= mask
& ~TAG_THREADID
;
2376 if (tag
== TAG_EXISTS
)
2378 info
->active
= stub_unpack_int (pkt
, length
);
2380 mask
= mask
& ~(TAG_EXISTS
);
2383 warning (_("ERROR RMT: 'exists' length too long."));
2389 if (tag
== TAG_THREADNAME
)
2391 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2392 mask
= mask
& ~TAG_THREADNAME
;
2395 if (tag
== TAG_DISPLAY
)
2397 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2398 mask
= mask
& ~TAG_DISPLAY
;
2401 if (tag
== TAG_MOREDISPLAY
)
2403 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2404 mask
= mask
& ~TAG_MOREDISPLAY
;
2407 warning (_("ERROR RMT: unknown thread info tag."));
2408 break; /* Not a tag we know about. */
2414 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2415 struct gdb_ext_thread_info
*info
)
2417 struct remote_state
*rs
= get_remote_state ();
2420 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2422 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2424 if (rs
->buf
[0] == '\0')
2427 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2432 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2435 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2436 threadref
*nextthread
)
2438 *pkt
++ = 'q'; /* info query packet */
2439 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2440 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2441 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2442 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2447 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2450 parse_threadlist_response (char *pkt
, int result_limit
,
2451 threadref
*original_echo
, threadref
*resultlist
,
2454 struct remote_state
*rs
= get_remote_state ();
2456 int count
, resultcount
, done
;
2459 /* Assume the 'q' and 'M chars have been stripped. */
2460 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2461 /* done parse past here */
2462 pkt
= unpack_byte (pkt
, &count
); /* count field */
2463 pkt
= unpack_nibble (pkt
, &done
);
2464 /* The first threadid is the argument threadid. */
2465 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2466 while ((count
-- > 0) && (pkt
< limit
))
2468 pkt
= unpack_threadid (pkt
, resultlist
++);
2469 if (resultcount
++ >= result_limit
)
2477 /* Fetch the next batch of threads from the remote. Returns -1 if the
2478 qL packet is not supported, 0 on error and 1 on success. */
2481 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2482 int *done
, int *result_count
, threadref
*threadlist
)
2484 struct remote_state
*rs
= get_remote_state ();
2487 /* Trancate result limit to be smaller than the packet size. */
2488 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2489 >= get_remote_packet_size ())
2490 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2492 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2494 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2495 if (*rs
->buf
== '\0')
2497 /* Packet not supported. */
2502 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2503 &rs
->echo_nextthread
, threadlist
, done
);
2505 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2507 /* FIXME: This is a good reason to drop the packet. */
2508 /* Possably, there is a duplicate response. */
2510 retransmit immediatly - race conditions
2511 retransmit after timeout - yes
2513 wait for packet, then exit
2515 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2516 return 0; /* I choose simply exiting. */
2518 if (*result_count
<= 0)
2522 warning (_("RMT ERROR : failed to get remote thread list."));
2525 return result
; /* break; */
2527 if (*result_count
> result_limit
)
2530 warning (_("RMT ERROR: threadlist response longer than requested."));
2536 /* Fetch the list of remote threads, with the qL packet, and call
2537 STEPFUNCTION for each thread found. Stops iterating and returns 1
2538 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2539 STEPFUNCTION returns false. If the packet is not supported,
2543 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2546 struct remote_state
*rs
= get_remote_state ();
2547 int done
, i
, result_count
;
2555 if (loopcount
++ > looplimit
)
2558 warning (_("Remote fetch threadlist -infinite loop-."));
2561 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2562 MAXTHREADLISTRESULTS
,
2563 &done
, &result_count
,
2564 rs
->resultthreadlist
);
2567 /* Clear for later iterations. */
2569 /* Setup to resume next batch of thread references, set nextthread. */
2570 if (result_count
>= 1)
2571 copy_threadref (&rs
->nextthread
,
2572 &rs
->resultthreadlist
[result_count
- 1]);
2574 while (result_count
--)
2576 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2586 /* A thread found on the remote target. */
2588 typedef struct thread_item
2590 /* The thread's PTID. */
2593 /* The thread's extra info. May be NULL. */
2596 /* The core the thread was running on. -1 if not known. */
2599 DEF_VEC_O(thread_item_t
);
2601 /* Context passed around to the various methods listing remote
2602 threads. As new threads are found, they're added to the ITEMS
2605 struct threads_listing_context
2607 /* The threads found on the remote target. */
2608 VEC (thread_item_t
) *items
;
2611 /* Discard the contents of the constructed thread listing context. */
2614 clear_threads_listing_context (void *p
)
2616 struct threads_listing_context
*context
= p
;
2618 struct thread_item
*item
;
2620 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2621 xfree (item
->extra
);
2623 VEC_free (thread_item_t
, context
->items
);
2627 remote_newthread_step (threadref
*ref
, void *data
)
2629 struct threads_listing_context
*context
= data
;
2630 struct thread_item item
;
2631 int pid
= ptid_get_pid (inferior_ptid
);
2633 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2637 VEC_safe_push (thread_item_t
, context
->items
, &item
);
2639 return 1; /* continue iterator */
2642 #define CRAZY_MAX_THREADS 1000
2645 remote_current_thread (ptid_t oldpid
)
2647 struct remote_state
*rs
= get_remote_state ();
2650 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2651 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2652 return read_ptid (&rs
->buf
[2], NULL
);
2657 /* List remote threads using the deprecated qL packet. */
2660 remote_get_threads_with_ql (struct target_ops
*ops
,
2661 struct threads_listing_context
*context
)
2663 if (remote_threadlist_iterator (remote_newthread_step
, context
,
2664 CRAZY_MAX_THREADS
) >= 0)
2670 #if defined(HAVE_LIBEXPAT)
2673 start_thread (struct gdb_xml_parser
*parser
,
2674 const struct gdb_xml_element
*element
,
2675 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2677 struct threads_listing_context
*data
= user_data
;
2679 struct thread_item item
;
2681 struct gdb_xml_value
*attr
;
2683 id
= xml_find_attribute (attributes
, "id")->value
;
2684 item
.ptid
= read_ptid (id
, NULL
);
2686 attr
= xml_find_attribute (attributes
, "core");
2688 item
.core
= *(ULONGEST
*) attr
->value
;
2694 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2698 end_thread (struct gdb_xml_parser
*parser
,
2699 const struct gdb_xml_element
*element
,
2700 void *user_data
, const char *body_text
)
2702 struct threads_listing_context
*data
= user_data
;
2704 if (body_text
&& *body_text
)
2705 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2708 const struct gdb_xml_attribute thread_attributes
[] = {
2709 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2710 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2711 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2714 const struct gdb_xml_element thread_children
[] = {
2715 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2718 const struct gdb_xml_element threads_children
[] = {
2719 { "thread", thread_attributes
, thread_children
,
2720 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2721 start_thread
, end_thread
},
2722 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2725 const struct gdb_xml_element threads_elements
[] = {
2726 { "threads", NULL
, threads_children
,
2727 GDB_XML_EF_NONE
, NULL
, NULL
},
2728 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2733 /* List remote threads using qXfer:threads:read. */
2736 remote_get_threads_with_qxfer (struct target_ops
*ops
,
2737 struct threads_listing_context
*context
)
2739 #if defined(HAVE_LIBEXPAT)
2740 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2742 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
2743 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2745 if (xml
!= NULL
&& *xml
!= '\0')
2747 gdb_xml_parse_quick (_("threads"), "threads.dtd",
2748 threads_elements
, xml
, context
);
2751 do_cleanups (back_to
);
2759 /* List remote threads using qfThreadInfo/qsThreadInfo. */
2762 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
2763 struct threads_listing_context
*context
)
2765 struct remote_state
*rs
= get_remote_state ();
2767 if (rs
->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 struct thread_item item
;
2782 item
.ptid
= read_ptid (bufp
, &bufp
);
2786 VEC_safe_push (thread_item_t
, context
->items
, &item
);
2788 while (*bufp
++ == ','); /* comma-separated list */
2789 putpkt ("qsThreadInfo");
2790 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2797 /* Packet not recognized. */
2798 rs
->use_threadinfo_query
= 0;
2805 /* Implement the to_update_thread_list function for the remote
2809 remote_update_thread_list (struct target_ops
*ops
)
2811 struct remote_state
*rs
= get_remote_state ();
2812 struct threads_listing_context context
;
2813 struct cleanup
*old_chain
;
2816 context
.items
= NULL
;
2817 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
2819 /* We have a few different mechanisms to fetch the thread list. Try
2820 them all, starting with the most preferred one first, falling
2821 back to older methods. */
2822 if (remote_get_threads_with_qxfer (ops
, &context
)
2823 || remote_get_threads_with_qthreadinfo (ops
, &context
)
2824 || remote_get_threads_with_ql (ops
, &context
))
2827 struct thread_item
*item
;
2828 struct thread_info
*tp
, *tmp
;
2832 if (VEC_empty (thread_item_t
, context
.items
)
2833 && remote_thread_always_alive (ops
, inferior_ptid
))
2835 /* Some targets don't really support threads, but still
2836 reply an (empty) thread list in response to the thread
2837 listing packets, instead of replying "packet not
2838 supported". Exit early so we don't delete the main
2840 do_cleanups (old_chain
);
2844 /* CONTEXT now holds the current thread list on the remote
2845 target end. Delete GDB-side threads no longer found on the
2847 ALL_NON_EXITED_THREADS_SAFE (tp
, tmp
)
2850 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2853 if (ptid_equal (item
->ptid
, tp
->ptid
))
2857 if (i
== VEC_length (thread_item_t
, context
.items
))
2860 delete_thread (tp
->ptid
);
2864 /* And now add threads we don't know about yet to our list. */
2866 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2869 if (!ptid_equal (item
->ptid
, null_ptid
))
2871 struct private_thread_info
*info
;
2872 /* In non-stop mode, we assume new found threads are
2873 running until proven otherwise with a stop reply. In
2874 all-stop, we can only get here if all threads are
2876 int running
= non_stop
? 1 : 0;
2878 remote_notice_new_inferior (item
->ptid
, running
);
2880 info
= demand_private_info (item
->ptid
);
2881 info
->core
= item
->core
;
2882 info
->extra
= item
->extra
;
2890 /* If no thread listing method is supported, then query whether
2891 each known thread is alive, one by one, with the T packet.
2892 If the target doesn't support threads at all, then this is a
2893 no-op. See remote_thread_alive. */
2897 do_cleanups (old_chain
);
2901 * Collect a descriptive string about the given thread.
2902 * The target may say anything it wants to about the thread
2903 * (typically info about its blocked / runnable state, name, etc.).
2904 * This string will appear in the info threads display.
2906 * Optional: targets are not required to implement this function.
2910 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
2912 struct remote_state
*rs
= get_remote_state ();
2916 struct gdb_ext_thread_info threadinfo
;
2917 static char display_buf
[100]; /* arbitrary... */
2918 int n
= 0; /* position in display_buf */
2920 if (rs
->remote_desc
== 0) /* paranoia */
2921 internal_error (__FILE__
, __LINE__
,
2922 _("remote_threads_extra_info"));
2924 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2925 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
2926 /* This is the main thread which was added by GDB. The remote
2927 server doesn't know about it. */
2930 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2932 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2934 if (info
&& info
->priv
)
2935 return info
->priv
->extra
;
2940 if (rs
->use_threadextra_query
)
2943 char *endb
= rs
->buf
+ get_remote_packet_size ();
2945 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2947 write_ptid (b
, endb
, tp
->ptid
);
2950 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2951 if (rs
->buf
[0] != 0)
2953 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2954 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2955 display_buf
[result
] = '\0';
2960 /* If the above query fails, fall back to the old method. */
2961 rs
->use_threadextra_query
= 0;
2962 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2963 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2964 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
2965 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2966 if (threadinfo
.active
)
2968 if (*threadinfo
.shortname
)
2969 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2970 " Name: %s,", threadinfo
.shortname
);
2971 if (*threadinfo
.display
)
2972 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2973 " State: %s,", threadinfo
.display
);
2974 if (*threadinfo
.more_display
)
2975 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2976 " Priority: %s", threadinfo
.more_display
);
2980 /* For purely cosmetic reasons, clear up trailing commas. */
2981 if (',' == display_buf
[n
-1])
2982 display_buf
[n
-1] = ' ';
2991 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
2992 struct static_tracepoint_marker
*marker
)
2994 struct remote_state
*rs
= get_remote_state ();
2997 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2999 p
+= hexnumstr (p
, addr
);
3001 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3005 error (_("Remote failure reply: %s"), p
);
3009 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3016 static VEC(static_tracepoint_marker_p
) *
3017 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3020 struct remote_state
*rs
= get_remote_state ();
3021 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3022 struct static_tracepoint_marker
*marker
= NULL
;
3023 struct cleanup
*old_chain
;
3026 /* Ask for a first packet of static tracepoint marker
3029 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3032 error (_("Remote failure reply: %s"), p
);
3034 old_chain
= make_cleanup (free_current_marker
, &marker
);
3039 marker
= XCNEW (struct static_tracepoint_marker
);
3043 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3045 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3047 VEC_safe_push (static_tracepoint_marker_p
,
3053 release_static_tracepoint_marker (marker
);
3054 memset (marker
, 0, sizeof (*marker
));
3057 while (*p
++ == ','); /* comma-separated list */
3058 /* Ask for another packet of static tracepoint definition. */
3060 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3064 do_cleanups (old_chain
);
3069 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3072 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3074 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3078 /* Restart the remote side; this is an extended protocol operation. */
3081 extended_remote_restart (void)
3083 struct remote_state
*rs
= get_remote_state ();
3085 /* Send the restart command; for reasons I don't understand the
3086 remote side really expects a number after the "R". */
3087 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3090 remote_fileio_reset ();
3093 /* Clean up connection to a remote debugger. */
3096 remote_close (struct target_ops
*self
)
3098 struct remote_state
*rs
= get_remote_state ();
3100 if (rs
->remote_desc
== NULL
)
3101 return; /* already closed */
3103 /* Make sure we leave stdin registered in the event loop, and we
3104 don't leave the async SIGINT signal handler installed. */
3105 remote_terminal_ours (self
);
3107 serial_close (rs
->remote_desc
);
3108 rs
->remote_desc
= NULL
;
3110 /* We don't have a connection to the remote stub anymore. Get rid
3111 of all the inferiors and their threads we were controlling.
3112 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3113 will be unable to find the thread corresponding to (pid, 0, 0). */
3114 inferior_ptid
= null_ptid
;
3115 discard_all_inferiors ();
3117 /* We are closing the remote target, so we should discard
3118 everything of this target. */
3119 discard_pending_stop_replies_in_queue (rs
);
3121 if (remote_async_inferior_event_token
)
3122 delete_async_event_handler (&remote_async_inferior_event_token
);
3124 remote_notif_state_xfree (rs
->notif_state
);
3126 trace_reset_local_state ();
3129 /* Query the remote side for the text, data and bss offsets. */
3134 struct remote_state
*rs
= get_remote_state ();
3137 int lose
, num_segments
= 0, do_sections
, do_segments
;
3138 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3139 struct section_offsets
*offs
;
3140 struct symfile_segment_data
*data
;
3142 if (symfile_objfile
== NULL
)
3145 putpkt ("qOffsets");
3146 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3149 if (buf
[0] == '\000')
3150 return; /* Return silently. Stub doesn't support
3154 warning (_("Remote failure reply: %s"), buf
);
3158 /* Pick up each field in turn. This used to be done with scanf, but
3159 scanf will make trouble if CORE_ADDR size doesn't match
3160 conversion directives correctly. The following code will work
3161 with any size of CORE_ADDR. */
3162 text_addr
= data_addr
= bss_addr
= 0;
3166 if (startswith (ptr
, "Text="))
3169 /* Don't use strtol, could lose on big values. */
3170 while (*ptr
&& *ptr
!= ';')
3171 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3173 if (startswith (ptr
, ";Data="))
3176 while (*ptr
&& *ptr
!= ';')
3177 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3182 if (!lose
&& startswith (ptr
, ";Bss="))
3185 while (*ptr
&& *ptr
!= ';')
3186 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3188 if (bss_addr
!= data_addr
)
3189 warning (_("Target reported unsupported offsets: %s"), buf
);
3194 else if (startswith (ptr
, "TextSeg="))
3197 /* Don't use strtol, could lose on big values. */
3198 while (*ptr
&& *ptr
!= ';')
3199 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3202 if (startswith (ptr
, ";DataSeg="))
3205 while (*ptr
&& *ptr
!= ';')
3206 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3214 error (_("Malformed response to offset query, %s"), buf
);
3215 else if (*ptr
!= '\0')
3216 warning (_("Target reported unsupported offsets: %s"), buf
);
3218 offs
= ((struct section_offsets
*)
3219 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3220 memcpy (offs
, symfile_objfile
->section_offsets
,
3221 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3223 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3224 do_segments
= (data
!= NULL
);
3225 do_sections
= num_segments
== 0;
3227 if (num_segments
> 0)
3229 segments
[0] = text_addr
;
3230 segments
[1] = data_addr
;
3232 /* If we have two segments, we can still try to relocate everything
3233 by assuming that the .text and .data offsets apply to the whole
3234 text and data segments. Convert the offsets given in the packet
3235 to base addresses for symfile_map_offsets_to_segments. */
3236 else if (data
&& data
->num_segments
== 2)
3238 segments
[0] = data
->segment_bases
[0] + text_addr
;
3239 segments
[1] = data
->segment_bases
[1] + data_addr
;
3242 /* If the object file has only one segment, assume that it is text
3243 rather than data; main programs with no writable data are rare,
3244 but programs with no code are useless. Of course the code might
3245 have ended up in the data segment... to detect that we would need
3246 the permissions here. */
3247 else if (data
&& data
->num_segments
== 1)
3249 segments
[0] = data
->segment_bases
[0] + text_addr
;
3252 /* There's no way to relocate by segment. */
3258 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3259 offs
, num_segments
, segments
);
3261 if (ret
== 0 && !do_sections
)
3262 error (_("Can not handle qOffsets TextSeg "
3263 "response with this symbol file"));
3270 free_symfile_segment_data (data
);
3274 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3276 /* This is a temporary kludge to force data and bss to use the
3277 same offsets because that's what nlmconv does now. The real
3278 solution requires changes to the stub and remote.c that I
3279 don't have time to do right now. */
3281 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3282 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3285 objfile_relocate (symfile_objfile
, offs
);
3288 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3289 threads we know are stopped already. This is used during the
3290 initial remote connection in non-stop mode --- threads that are
3291 reported as already being stopped are left stopped. */
3294 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3296 /* If we have a stop reply for this thread, it must be stopped. */
3297 if (peek_stop_reply (thread
->ptid
))
3298 set_stop_requested (thread
->ptid
, 1);
3303 /* Send interrupt_sequence to remote target. */
3305 send_interrupt_sequence (void)
3307 struct remote_state
*rs
= get_remote_state ();
3309 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3310 remote_serial_write ("\x03", 1);
3311 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3312 serial_send_break (rs
->remote_desc
);
3313 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3315 serial_send_break (rs
->remote_desc
);
3316 remote_serial_write ("g", 1);
3319 internal_error (__FILE__
, __LINE__
,
3320 _("Invalid value for interrupt_sequence_mode: %s."),
3321 interrupt_sequence_mode
);
3325 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3326 and extract the PTID. Returns NULL_PTID if not found. */
3329 stop_reply_extract_thread (char *stop_reply
)
3331 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3335 /* Txx r:val ; r:val (...) */
3338 /* Look for "register" named "thread". */
3343 p1
= strchr (p
, ':');
3347 if (strncmp (p
, "thread", p1
- p
) == 0)
3348 return read_ptid (++p1
, &p
);
3350 p1
= strchr (p
, ';');
3362 /* Determine the remote side's current thread. If we have a stop
3363 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3364 "thread" register we can extract the current thread from. If not,
3365 ask the remote which is the current thread with qC. The former
3366 method avoids a roundtrip. */
3369 get_current_thread (char *wait_status
)
3373 /* Note we don't use remote_parse_stop_reply as that makes use of
3374 the target architecture, which we haven't yet fully determined at
3376 if (wait_status
!= NULL
)
3377 ptid
= stop_reply_extract_thread (wait_status
);
3378 if (ptid_equal (ptid
, null_ptid
))
3379 ptid
= remote_current_thread (inferior_ptid
);
3384 /* Query the remote target for which is the current thread/process,
3385 add it to our tables, and update INFERIOR_PTID. The caller is
3386 responsible for setting the state such that the remote end is ready
3387 to return the current thread.
3389 This function is called after handling the '?' or 'vRun' packets,
3390 whose response is a stop reply from which we can also try
3391 extracting the thread. If the target doesn't support the explicit
3392 qC query, we infer the current thread from that stop reply, passed
3393 in in WAIT_STATUS, which may be NULL. */
3396 add_current_inferior_and_thread (char *wait_status
)
3398 struct remote_state
*rs
= get_remote_state ();
3400 ptid_t ptid
= null_ptid
;
3402 inferior_ptid
= null_ptid
;
3404 /* Now, if we have thread information, update inferior_ptid. */
3405 ptid
= get_current_thread (wait_status
);
3407 if (!ptid_equal (ptid
, null_ptid
))
3409 if (!remote_multi_process_p (rs
))
3412 inferior_ptid
= ptid
;
3416 /* Without this, some commands which require an active target
3417 (such as kill) won't work. This variable serves (at least)
3418 double duty as both the pid of the target process (if it has
3419 such), and as a flag indicating that a target is active. */
3420 inferior_ptid
= magic_null_ptid
;
3424 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3426 /* Add the main thread. */
3427 add_thread_silent (inferior_ptid
);
3431 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3433 struct remote_state
*rs
= get_remote_state ();
3434 struct packet_config
*noack_config
;
3435 char *wait_status
= NULL
;
3437 immediate_quit
++; /* Allow user to interrupt it. */
3440 if (interrupt_on_connect
)
3441 send_interrupt_sequence ();
3443 /* Ack any packet which the remote side has already sent. */
3444 serial_write (rs
->remote_desc
, "+", 1);
3446 /* Signal other parts that we're going through the initial setup,
3447 and so things may not be stable yet. */
3448 rs
->starting_up
= 1;
3450 /* The first packet we send to the target is the optional "supported
3451 packets" request. If the target can answer this, it will tell us
3452 which later probes to skip. */
3453 remote_query_supported ();
3455 /* If the stub wants to get a QAllow, compose one and send it. */
3456 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3457 remote_set_permissions (target
);
3459 /* Next, we possibly activate noack mode.
3461 If the QStartNoAckMode packet configuration is set to AUTO,
3462 enable noack mode if the stub reported a wish for it with
3465 If set to TRUE, then enable noack mode even if the stub didn't
3466 report it in qSupported. If the stub doesn't reply OK, the
3467 session ends with an error.
3469 If FALSE, then don't activate noack mode, regardless of what the
3470 stub claimed should be the default with qSupported. */
3472 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3473 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3475 putpkt ("QStartNoAckMode");
3476 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3477 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3483 /* Tell the remote that we are using the extended protocol. */
3485 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3488 /* Let the target know which signals it is allowed to pass down to
3490 update_signals_program_target ();
3492 /* Next, if the target can specify a description, read it. We do
3493 this before anything involving memory or registers. */
3494 target_find_description ();
3496 /* Next, now that we know something about the target, update the
3497 address spaces in the program spaces. */
3498 update_address_spaces ();
3500 /* On OSs where the list of libraries is global to all
3501 processes, we fetch them early. */
3502 if (gdbarch_has_global_solist (target_gdbarch ()))
3503 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3507 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3508 error (_("Non-stop mode requested, but remote "
3509 "does not support non-stop"));
3511 putpkt ("QNonStop:1");
3512 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3514 if (strcmp (rs
->buf
, "OK") != 0)
3515 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3517 /* Find about threads and processes the stub is already
3518 controlling. We default to adding them in the running state.
3519 The '?' query below will then tell us about which threads are
3521 remote_update_thread_list (target
);
3523 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
3525 /* Don't assume that the stub can operate in all-stop mode.
3526 Request it explicitly. */
3527 putpkt ("QNonStop:0");
3528 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3530 if (strcmp (rs
->buf
, "OK") != 0)
3531 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3534 /* Upload TSVs regardless of whether the target is running or not. The
3535 remote stub, such as GDBserver, may have some predefined or builtin
3536 TSVs, even if the target is not running. */
3537 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3539 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3541 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3542 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3545 /* Check whether the target is running now. */
3547 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3553 struct inferior
*inf
;
3555 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3558 error (_("The target is not running (try extended-remote?)"));
3560 /* We're connected, but not running. Drop out before we
3561 call start_remote. */
3562 rs
->starting_up
= 0;
3567 /* Save the reply for later. */
3568 wait_status
= alloca (strlen (rs
->buf
) + 1);
3569 strcpy (wait_status
, rs
->buf
);
3572 /* Fetch thread list. */
3573 target_update_thread_list ();
3575 /* Let the stub know that we want it to return the thread. */
3576 set_continue_thread (minus_one_ptid
);
3578 if (thread_count () == 0)
3580 /* Target has no concept of threads at all. GDB treats
3581 non-threaded target as single-threaded; add a main
3583 add_current_inferior_and_thread (wait_status
);
3587 /* We have thread information; select the thread the target
3588 says should be current. If we're reconnecting to a
3589 multi-threaded program, this will ideally be the thread
3590 that last reported an event before GDB disconnected. */
3591 inferior_ptid
= get_current_thread (wait_status
);
3592 if (ptid_equal (inferior_ptid
, null_ptid
))
3594 /* Odd... The target was able to list threads, but not
3595 tell us which thread was current (no "thread"
3596 register in T stop reply?). Just pick the first
3597 thread in the thread list then. */
3598 inferior_ptid
= thread_list
->ptid
;
3602 /* init_wait_for_inferior should be called before get_offsets in order
3603 to manage `inserted' flag in bp loc in a correct state.
3604 breakpoint_init_inferior, called from init_wait_for_inferior, set
3605 `inserted' flag to 0, while before breakpoint_re_set, called from
3606 start_remote, set `inserted' flag to 1. In the initialization of
3607 inferior, breakpoint_init_inferior should be called first, and then
3608 breakpoint_re_set can be called. If this order is broken, state of
3609 `inserted' flag is wrong, and cause some problems on breakpoint
3611 init_wait_for_inferior ();
3613 get_offsets (); /* Get text, data & bss offsets. */
3615 /* If we could not find a description using qXfer, and we know
3616 how to do it some other way, try again. This is not
3617 supported for non-stop; it could be, but it is tricky if
3618 there are no stopped threads when we connect. */
3619 if (remote_read_description_p (target
)
3620 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3622 target_clear_description ();
3623 target_find_description ();
3626 /* Use the previously fetched status. */
3627 gdb_assert (wait_status
!= NULL
);
3628 strcpy (rs
->buf
, wait_status
);
3629 rs
->cached_wait_status
= 1;
3632 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3636 /* Clear WFI global state. Do this before finding about new
3637 threads and inferiors, and setting the current inferior.
3638 Otherwise we would clear the proceed status of the current
3639 inferior when we want its stop_soon state to be preserved
3640 (see notice_new_inferior). */
3641 init_wait_for_inferior ();
3643 /* In non-stop, we will either get an "OK", meaning that there
3644 are no stopped threads at this time; or, a regular stop
3645 reply. In the latter case, there may be more than one thread
3646 stopped --- we pull them all out using the vStopped
3648 if (strcmp (rs
->buf
, "OK") != 0)
3650 struct notif_client
*notif
= ¬if_client_stop
;
3652 /* remote_notif_get_pending_replies acks this one, and gets
3654 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3655 = remote_notif_parse (notif
, rs
->buf
);
3656 remote_notif_get_pending_events (notif
);
3658 /* Make sure that threads that were stopped remain
3660 iterate_over_threads (set_stop_requested_callback
, NULL
);
3663 if (target_can_async_p ())
3664 target_async (inferior_event_handler
, 0);
3666 if (thread_count () == 0)
3669 error (_("The target is not running (try extended-remote?)"));
3671 /* We're connected, but not running. Drop out before we
3672 call start_remote. */
3673 rs
->starting_up
= 0;
3677 /* Let the stub know that we want it to return the thread. */
3679 /* Force the stub to choose a thread. */
3680 set_general_thread (null_ptid
);
3683 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3684 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3685 error (_("remote didn't report the current thread in non-stop mode"));
3687 get_offsets (); /* Get text, data & bss offsets. */
3689 /* In non-stop mode, any cached wait status will be stored in
3690 the stop reply queue. */
3691 gdb_assert (wait_status
== NULL
);
3693 /* Report all signals during attach/startup. */
3694 remote_pass_signals (target
, 0, NULL
);
3697 /* If we connected to a live target, do some additional setup. */
3698 if (target_has_execution
)
3700 if (symfile_objfile
) /* No use without a symbol-file. */
3701 remote_check_symbols ();
3704 /* Possibly the target has been engaged in a trace run started
3705 previously; find out where things are at. */
3706 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3708 struct uploaded_tp
*uploaded_tps
= NULL
;
3710 if (current_trace_status ()->running
)
3711 printf_filtered (_("Trace is already running on the target.\n"));
3713 remote_upload_tracepoints (target
, &uploaded_tps
);
3715 merge_uploaded_tracepoints (&uploaded_tps
);
3718 /* The thread and inferior lists are now synchronized with the
3719 target, our symbols have been relocated, and we're merged the
3720 target's tracepoints with ours. We're done with basic start
3722 rs
->starting_up
= 0;
3724 /* Maybe breakpoints are global and need to be inserted now. */
3725 if (breakpoints_should_be_inserted_now ())
3726 insert_breakpoints ();
3729 /* Open a connection to a remote debugger.
3730 NAME is the filename used for communication. */
3733 remote_open (const char *name
, int from_tty
)
3735 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3738 /* Open a connection to a remote debugger using the extended
3739 remote gdb protocol. NAME is the filename used for communication. */
3742 extended_remote_open (const char *name
, int from_tty
)
3744 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3747 /* Reset all packets back to "unknown support". Called when opening a
3748 new connection to a remote target. */
3751 reset_all_packet_configs_support (void)
3755 for (i
= 0; i
< PACKET_MAX
; i
++)
3756 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3759 /* Initialize all packet configs. */
3762 init_all_packet_configs (void)
3766 for (i
= 0; i
< PACKET_MAX
; i
++)
3768 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
3769 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3773 /* Symbol look-up. */
3776 remote_check_symbols (void)
3778 struct remote_state
*rs
= get_remote_state ();
3779 char *msg
, *reply
, *tmp
;
3780 struct bound_minimal_symbol sym
;
3783 /* The remote side has no concept of inferiors that aren't running
3784 yet, it only knows about running processes. If we're connected
3785 but our current inferior is not running, we should not invite the
3786 remote target to request symbol lookups related to its
3787 (unrelated) current process. */
3788 if (!target_has_execution
)
3791 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
3794 /* Make sure the remote is pointing at the right process. Note
3795 there's no way to select "no process". */
3796 set_general_process ();
3798 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3799 because we need both at the same time. */
3800 msg
= alloca (get_remote_packet_size ());
3802 /* Invite target to request symbol lookups. */
3804 putpkt ("qSymbol::");
3805 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3806 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3809 while (startswith (reply
, "qSymbol:"))
3811 struct bound_minimal_symbol sym
;
3814 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3816 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3817 if (sym
.minsym
== NULL
)
3818 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3821 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3822 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
3824 /* If this is a function address, return the start of code
3825 instead of any data function descriptor. */
3826 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3830 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3831 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3835 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3840 static struct serial
*
3841 remote_serial_open (const char *name
)
3843 static int udp_warning
= 0;
3845 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3846 of in ser-tcp.c, because it is the remote protocol assuming that the
3847 serial connection is reliable and not the serial connection promising
3849 if (!udp_warning
&& startswith (name
, "udp:"))
3851 warning (_("The remote protocol may be unreliable over UDP.\n"
3852 "Some events may be lost, rendering further debugging "
3857 return serial_open (name
);
3860 /* Inform the target of our permission settings. The permission flags
3861 work without this, but if the target knows the settings, it can do
3862 a couple things. First, it can add its own check, to catch cases
3863 that somehow manage to get by the permissions checks in target
3864 methods. Second, if the target is wired to disallow particular
3865 settings (for instance, a system in the field that is not set up to
3866 be able to stop at a breakpoint), it can object to any unavailable
3870 remote_set_permissions (struct target_ops
*self
)
3872 struct remote_state
*rs
= get_remote_state ();
3874 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3875 "WriteReg:%x;WriteMem:%x;"
3876 "InsertBreak:%x;InsertTrace:%x;"
3877 "InsertFastTrace:%x;Stop:%x",
3878 may_write_registers
, may_write_memory
,
3879 may_insert_breakpoints
, may_insert_tracepoints
,
3880 may_insert_fast_tracepoints
, may_stop
);
3882 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3884 /* If the target didn't like the packet, warn the user. Do not try
3885 to undo the user's settings, that would just be maddening. */
3886 if (strcmp (rs
->buf
, "OK") != 0)
3887 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3890 /* This type describes each known response to the qSupported
3892 struct protocol_feature
3894 /* The name of this protocol feature. */
3897 /* The default for this protocol feature. */
3898 enum packet_support default_support
;
3900 /* The function to call when this feature is reported, or after
3901 qSupported processing if the feature is not supported.
3902 The first argument points to this structure. The second
3903 argument indicates whether the packet requested support be
3904 enabled, disabled, or probed (or the default, if this function
3905 is being called at the end of processing and this feature was
3906 not reported). The third argument may be NULL; if not NULL, it
3907 is a NUL-terminated string taken from the packet following
3908 this feature's name and an equals sign. */
3909 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3912 /* The corresponding packet for this feature. Only used if
3913 FUNC is remote_supported_packet. */
3918 remote_supported_packet (const struct protocol_feature
*feature
,
3919 enum packet_support support
,
3920 const char *argument
)
3924 warning (_("Remote qSupported response supplied an unexpected value for"
3925 " \"%s\"."), feature
->name
);
3929 remote_protocol_packets
[feature
->packet
].support
= support
;
3933 remote_packet_size (const struct protocol_feature
*feature
,
3934 enum packet_support support
, const char *value
)
3936 struct remote_state
*rs
= get_remote_state ();
3941 if (support
!= PACKET_ENABLE
)
3944 if (value
== NULL
|| *value
== '\0')
3946 warning (_("Remote target reported \"%s\" without a size."),
3952 packet_size
= strtol (value
, &value_end
, 16);
3953 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3955 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3956 feature
->name
, value
);
3960 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3962 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3963 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3964 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3967 /* Record the new maximum packet size. */
3968 rs
->explicit_packet_size
= packet_size
;
3971 static const struct protocol_feature remote_protocol_features
[] = {
3972 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3973 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3974 PACKET_qXfer_auxv
},
3975 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3976 PACKET_qXfer_features
},
3977 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3978 PACKET_qXfer_libraries
},
3979 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3980 PACKET_qXfer_libraries_svr4
},
3981 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3982 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
3983 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3984 PACKET_qXfer_memory_map
},
3985 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3986 PACKET_qXfer_spu_read
},
3987 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3988 PACKET_qXfer_spu_write
},
3989 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3990 PACKET_qXfer_osdata
},
3991 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3992 PACKET_qXfer_threads
},
3993 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3994 PACKET_qXfer_traceframe_info
},
3995 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3996 PACKET_QPassSignals
},
3997 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3998 PACKET_QProgramSignals
},
3999 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4000 PACKET_QStartNoAckMode
},
4001 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4002 PACKET_multiprocess_feature
},
4003 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4004 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4005 PACKET_qXfer_siginfo_read
},
4006 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4007 PACKET_qXfer_siginfo_write
},
4008 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4009 PACKET_ConditionalTracepoints
},
4010 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4011 PACKET_ConditionalBreakpoints
},
4012 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4013 PACKET_BreakpointCommands
},
4014 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4015 PACKET_FastTracepoints
},
4016 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4017 PACKET_StaticTracepoints
},
4018 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4019 PACKET_InstallInTrace
},
4020 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4021 PACKET_DisconnectedTracing_feature
},
4022 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4024 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4026 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4027 PACKET_TracepointSource
},
4028 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4030 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4031 PACKET_EnableDisableTracepoints_feature
},
4032 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4033 PACKET_qXfer_fdpic
},
4034 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4036 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4037 PACKET_QDisableRandomization
},
4038 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4039 { "QTBuffer:size", PACKET_DISABLE
,
4040 remote_supported_packet
, PACKET_QTBuffer_size
},
4041 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4042 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4043 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4044 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4045 PACKET_qXfer_btrace
},
4046 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4047 PACKET_qXfer_btrace_conf
},
4048 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4049 PACKET_Qbtrace_conf_bts_size
},
4050 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4051 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4054 static char *remote_support_xml
;
4056 /* Register string appended to "xmlRegisters=" in qSupported query. */
4059 register_remote_support_xml (const char *xml
)
4061 #if defined(HAVE_LIBEXPAT)
4062 if (remote_support_xml
== NULL
)
4063 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4066 char *copy
= xstrdup (remote_support_xml
+ 13);
4067 char *p
= strtok (copy
, ",");
4071 if (strcmp (p
, xml
) == 0)
4078 while ((p
= strtok (NULL
, ",")) != NULL
);
4081 remote_support_xml
= reconcat (remote_support_xml
,
4082 remote_support_xml
, ",", xml
,
4089 remote_query_supported_append (char *msg
, const char *append
)
4092 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4094 return xstrdup (append
);
4098 remote_query_supported (void)
4100 struct remote_state
*rs
= get_remote_state ();
4103 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4105 /* The packet support flags are handled differently for this packet
4106 than for most others. We treat an error, a disabled packet, and
4107 an empty response identically: any features which must be reported
4108 to be used will be automatically disabled. An empty buffer
4109 accomplishes this, since that is also the representation for a list
4110 containing no features. */
4113 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4116 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4118 q
= remote_query_supported_append (q
, "multiprocess+");
4120 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4121 q
= remote_query_supported_append (q
, "swbreak+");
4122 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4123 q
= remote_query_supported_append (q
, "hwbreak+");
4125 if (remote_support_xml
)
4126 q
= remote_query_supported_append (q
, remote_support_xml
);
4128 q
= remote_query_supported_append (q
, "qRelocInsn+");
4130 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4133 do_cleanups (old_chain
);
4135 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4137 /* If an error occured, warn, but do not return - just reset the
4138 buffer to empty and go on to disable features. */
4139 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4142 warning (_("Remote failure reply: %s"), rs
->buf
);
4147 memset (seen
, 0, sizeof (seen
));
4152 enum packet_support is_supported
;
4153 char *p
, *end
, *name_end
, *value
;
4155 /* First separate out this item from the rest of the packet. If
4156 there's another item after this, we overwrite the separator
4157 (terminated strings are much easier to work with). */
4159 end
= strchr (p
, ';');
4162 end
= p
+ strlen (p
);
4172 warning (_("empty item in \"qSupported\" response"));
4177 name_end
= strchr (p
, '=');
4180 /* This is a name=value entry. */
4181 is_supported
= PACKET_ENABLE
;
4182 value
= name_end
+ 1;
4191 is_supported
= PACKET_ENABLE
;
4195 is_supported
= PACKET_DISABLE
;
4199 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4203 warning (_("unrecognized item \"%s\" "
4204 "in \"qSupported\" response"), p
);
4210 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4211 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4213 const struct protocol_feature
*feature
;
4216 feature
= &remote_protocol_features
[i
];
4217 feature
->func (feature
, is_supported
, value
);
4222 /* If we increased the packet size, make sure to increase the global
4223 buffer size also. We delay this until after parsing the entire
4224 qSupported packet, because this is the same buffer we were
4226 if (rs
->buf_size
< rs
->explicit_packet_size
)
4228 rs
->buf_size
= rs
->explicit_packet_size
;
4229 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4232 /* Handle the defaults for unmentioned features. */
4233 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4236 const struct protocol_feature
*feature
;
4238 feature
= &remote_protocol_features
[i
];
4239 feature
->func (feature
, feature
->default_support
, NULL
);
4243 /* Remove any of the remote.c targets from target stack. Upper targets depend
4244 on it so remove them first. */
4247 remote_unpush_target (void)
4249 pop_all_targets_above (process_stratum
- 1);
4253 remote_open_1 (const char *name
, int from_tty
,
4254 struct target_ops
*target
, int extended_p
)
4256 struct remote_state
*rs
= get_remote_state ();
4259 error (_("To open a remote debug connection, you need to specify what\n"
4260 "serial device is attached to the remote system\n"
4261 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4263 /* See FIXME above. */
4264 if (!target_async_permitted
)
4265 wait_forever_enabled_p
= 1;
4267 /* If we're connected to a running target, target_preopen will kill it.
4268 Ask this question first, before target_preopen has a chance to kill
4270 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4273 && !query (_("Already connected to a remote target. Disconnect? ")))
4274 error (_("Still connected."));
4277 /* Here the possibly existing remote target gets unpushed. */
4278 target_preopen (from_tty
);
4280 /* Make sure we send the passed signals list the next time we resume. */
4281 xfree (rs
->last_pass_packet
);
4282 rs
->last_pass_packet
= NULL
;
4284 /* Make sure we send the program signals list the next time we
4286 xfree (rs
->last_program_signals_packet
);
4287 rs
->last_program_signals_packet
= NULL
;
4289 remote_fileio_reset ();
4290 reopen_exec_file ();
4293 rs
->remote_desc
= remote_serial_open (name
);
4294 if (!rs
->remote_desc
)
4295 perror_with_name (name
);
4297 if (baud_rate
!= -1)
4299 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4301 /* The requested speed could not be set. Error out to
4302 top level after closing remote_desc. Take care to
4303 set remote_desc to NULL to avoid closing remote_desc
4305 serial_close (rs
->remote_desc
);
4306 rs
->remote_desc
= NULL
;
4307 perror_with_name (name
);
4311 serial_raw (rs
->remote_desc
);
4313 /* If there is something sitting in the buffer we might take it as a
4314 response to a command, which would be bad. */
4315 serial_flush_input (rs
->remote_desc
);
4319 puts_filtered ("Remote debugging using ");
4320 puts_filtered (name
);
4321 puts_filtered ("\n");
4323 push_target (target
); /* Switch to using remote target now. */
4325 /* Register extra event sources in the event loop. */
4326 remote_async_inferior_event_token
4327 = create_async_event_handler (remote_async_inferior_event_handler
,
4329 rs
->notif_state
= remote_notif_state_allocate ();
4331 /* Reset the target state; these things will be queried either by
4332 remote_query_supported or as they are needed. */
4333 reset_all_packet_configs_support ();
4334 rs
->cached_wait_status
= 0;
4335 rs
->explicit_packet_size
= 0;
4337 rs
->extended
= extended_p
;
4338 rs
->waiting_for_stop_reply
= 0;
4339 rs
->ctrlc_pending_p
= 0;
4341 rs
->general_thread
= not_sent_ptid
;
4342 rs
->continue_thread
= not_sent_ptid
;
4343 rs
->remote_traceframe_number
= -1;
4345 /* Probe for ability to use "ThreadInfo" query, as required. */
4346 rs
->use_threadinfo_query
= 1;
4347 rs
->use_threadextra_query
= 1;
4349 if (target_async_permitted
)
4351 /* With this target we start out by owning the terminal. */
4352 remote_async_terminal_ours_p
= 1;
4354 /* FIXME: cagney/1999-09-23: During the initial connection it is
4355 assumed that the target is already ready and able to respond to
4356 requests. Unfortunately remote_start_remote() eventually calls
4357 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4358 around this. Eventually a mechanism that allows
4359 wait_for_inferior() to expect/get timeouts will be
4361 wait_forever_enabled_p
= 0;
4364 /* First delete any symbols previously loaded from shared libraries. */
4365 no_shared_libraries (NULL
, 0);
4368 init_thread_list ();
4370 /* Start the remote connection. If error() or QUIT, discard this
4371 target (we'd otherwise be in an inconsistent state) and then
4372 propogate the error on up the exception chain. This ensures that
4373 the caller doesn't stumble along blindly assuming that the
4374 function succeeded. The CLI doesn't have this problem but other
4375 UI's, such as MI do.
4377 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4378 this function should return an error indication letting the
4379 caller restore the previous state. Unfortunately the command
4380 ``target remote'' is directly wired to this function making that
4381 impossible. On a positive note, the CLI side of this problem has
4382 been fixed - the function set_cmd_context() makes it possible for
4383 all the ``target ....'' commands to share a common callback
4384 function. See cli-dump.c. */
4389 remote_start_remote (from_tty
, target
, extended_p
);
4391 CATCH (ex
, RETURN_MASK_ALL
)
4393 /* Pop the partially set up target - unless something else did
4394 already before throwing the exception. */
4395 if (rs
->remote_desc
!= NULL
)
4396 remote_unpush_target ();
4397 if (target_async_permitted
)
4398 wait_forever_enabled_p
= 1;
4399 throw_exception (ex
);
4404 remote_btrace_reset ();
4406 if (target_async_permitted
)
4407 wait_forever_enabled_p
= 1;
4410 /* This takes a program previously attached to and detaches it. After
4411 this is done, GDB can be used to debug some other program. We
4412 better not have left any breakpoints in the target program or it'll
4413 die when it hits one. */
4416 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4418 int pid
= ptid_get_pid (inferior_ptid
);
4419 struct remote_state
*rs
= get_remote_state ();
4422 error (_("Argument given to \"detach\" when remotely debugging."));
4424 if (!target_has_execution
)
4425 error (_("No process to detach from."));
4429 char *exec_file
= get_exec_file (0);
4430 if (exec_file
== NULL
)
4432 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4433 target_pid_to_str (pid_to_ptid (pid
)));
4434 gdb_flush (gdb_stdout
);
4437 /* Tell the remote target to detach. */
4438 if (remote_multi_process_p (rs
))
4439 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4441 strcpy (rs
->buf
, "D");
4444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4446 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4448 else if (rs
->buf
[0] == '\0')
4449 error (_("Remote doesn't know how to detach"));
4451 error (_("Can't detach process."));
4453 if (from_tty
&& !extended
)
4454 puts_filtered (_("Ending remote debugging.\n"));
4456 target_mourn_inferior ();
4460 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4462 remote_detach_1 (args
, from_tty
, 0);
4466 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4468 remote_detach_1 (args
, from_tty
, 1);
4471 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4474 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
4477 error (_("Argument given to \"disconnect\" when remotely debugging."));
4479 /* Make sure we unpush even the extended remote targets; mourn
4480 won't do it. So call remote_mourn_1 directly instead of
4481 target_mourn_inferior. */
4482 remote_mourn_1 (target
);
4485 puts_filtered ("Ending remote debugging.\n");
4488 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4489 be chatty about it. */
4492 extended_remote_attach_1 (struct target_ops
*target
, const char *args
,
4495 struct remote_state
*rs
= get_remote_state ();
4497 char *wait_status
= NULL
;
4499 pid
= parse_pid_to_attach (args
);
4501 /* Remote PID can be freely equal to getpid, do not check it here the same
4502 way as in other targets. */
4504 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
4505 error (_("This target does not support attaching to a process"));
4509 char *exec_file
= get_exec_file (0);
4512 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4513 target_pid_to_str (pid_to_ptid (pid
)));
4515 printf_unfiltered (_("Attaching to %s\n"),
4516 target_pid_to_str (pid_to_ptid (pid
)));
4518 gdb_flush (gdb_stdout
);
4521 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4523 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4525 switch (packet_ok (rs
->buf
,
4526 &remote_protocol_packets
[PACKET_vAttach
]))
4531 /* Save the reply for later. */
4532 wait_status
= alloca (strlen (rs
->buf
) + 1);
4533 strcpy (wait_status
, rs
->buf
);
4535 else if (strcmp (rs
->buf
, "OK") != 0)
4536 error (_("Attaching to %s failed with: %s"),
4537 target_pid_to_str (pid_to_ptid (pid
)),
4540 case PACKET_UNKNOWN
:
4541 error (_("This target does not support attaching to a process"));
4543 error (_("Attaching to %s failed"),
4544 target_pid_to_str (pid_to_ptid (pid
)));
4547 set_current_inferior (remote_add_inferior (0, pid
, 1));
4549 inferior_ptid
= pid_to_ptid (pid
);
4553 struct thread_info
*thread
;
4555 /* Get list of threads. */
4556 remote_update_thread_list (target
);
4558 thread
= first_thread_of_process (pid
);
4560 inferior_ptid
= thread
->ptid
;
4562 inferior_ptid
= pid_to_ptid (pid
);
4564 /* Invalidate our notion of the remote current thread. */
4565 record_currthread (rs
, minus_one_ptid
);
4569 /* Now, if we have thread information, update inferior_ptid. */
4570 inferior_ptid
= remote_current_thread (inferior_ptid
);
4572 /* Add the main thread to the thread list. */
4573 add_thread_silent (inferior_ptid
);
4576 /* Next, if the target can specify a description, read it. We do
4577 this before anything involving memory or registers. */
4578 target_find_description ();
4582 /* Use the previously fetched status. */
4583 gdb_assert (wait_status
!= NULL
);
4585 if (target_can_async_p ())
4587 struct notif_event
*reply
4588 = remote_notif_parse (¬if_client_stop
, wait_status
);
4590 push_stop_reply ((struct stop_reply
*) reply
);
4592 target_async (inferior_event_handler
, 0);
4596 gdb_assert (wait_status
!= NULL
);
4597 strcpy (rs
->buf
, wait_status
);
4598 rs
->cached_wait_status
= 1;
4602 gdb_assert (wait_status
== NULL
);
4606 extended_remote_attach (struct target_ops
*ops
, const char *args
, int from_tty
)
4608 extended_remote_attach_1 (ops
, args
, from_tty
);
4611 /* Implementation of the to_post_attach method. */
4614 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
4616 /* In certain cases GDB might not have had the chance to start
4617 symbol lookup up until now. This could happen if the debugged
4618 binary is not using shared libraries, the vsyscall page is not
4619 present (on Linux) and the binary itself hadn't changed since the
4620 debugging process was started. */
4621 if (symfile_objfile
!= NULL
)
4622 remote_check_symbols();
4626 /* Check for the availability of vCont. This function should also check
4630 remote_vcont_probe (struct remote_state
*rs
)
4634 strcpy (rs
->buf
, "vCont?");
4636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4639 /* Make sure that the features we assume are supported. */
4640 if (startswith (buf
, "vCont"))
4643 int support_s
, support_S
, support_c
, support_C
;
4649 rs
->supports_vCont
.t
= 0;
4650 rs
->supports_vCont
.r
= 0;
4651 while (p
&& *p
== ';')
4654 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4656 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4658 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4660 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4662 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4663 rs
->supports_vCont
.t
= 1;
4664 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4665 rs
->supports_vCont
.r
= 1;
4667 p
= strchr (p
, ';');
4670 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4671 BUF will make packet_ok disable the packet. */
4672 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4676 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4679 /* Helper function for building "vCont" resumptions. Write a
4680 resumption to P. ENDP points to one-passed-the-end of the buffer
4681 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4682 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4683 resumed thread should be single-stepped and/or signalled. If PTID
4684 equals minus_one_ptid, then all threads are resumed; if PTID
4685 represents a process, then all threads of the process are resumed;
4686 the thread to be stepped and/or signalled is given in the global
4690 append_resumption (char *p
, char *endp
,
4691 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4693 struct remote_state
*rs
= get_remote_state ();
4695 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4696 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4698 /* GDB is willing to range step. */
4699 && use_range_stepping
4700 /* Target supports range stepping. */
4701 && rs
->supports_vCont
.r
4702 /* We don't currently support range stepping multiple
4703 threads with a wildcard (though the protocol allows it,
4704 so stubs shouldn't make an active effort to forbid
4706 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4708 struct thread_info
*tp
;
4710 if (ptid_equal (ptid
, minus_one_ptid
))
4712 /* If we don't know about the target thread's tid, then
4713 we're resuming magic_null_ptid (see caller). */
4714 tp
= find_thread_ptid (magic_null_ptid
);
4717 tp
= find_thread_ptid (ptid
);
4718 gdb_assert (tp
!= NULL
);
4720 if (tp
->control
.may_range_step
)
4722 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4724 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4725 phex_nz (tp
->control
.step_range_start
,
4727 phex_nz (tp
->control
.step_range_end
,
4731 p
+= xsnprintf (p
, endp
- p
, ";s");
4734 p
+= xsnprintf (p
, endp
- p
, ";s");
4735 else if (siggnal
!= GDB_SIGNAL_0
)
4736 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4738 p
+= xsnprintf (p
, endp
- p
, ";c");
4740 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4744 /* All (-1) threads of process. */
4745 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4747 p
+= xsnprintf (p
, endp
- p
, ":");
4748 p
= write_ptid (p
, endp
, nptid
);
4750 else if (!ptid_equal (ptid
, minus_one_ptid
))
4752 p
+= xsnprintf (p
, endp
- p
, ":");
4753 p
= write_ptid (p
, endp
, ptid
);
4759 /* Append a vCont continue-with-signal action for threads that have a
4760 non-zero stop signal. */
4763 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4765 struct thread_info
*thread
;
4767 ALL_NON_EXITED_THREADS (thread
)
4768 if (ptid_match (thread
->ptid
, ptid
)
4769 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4770 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
4772 p
= append_resumption (p
, endp
, thread
->ptid
,
4773 0, thread
->suspend
.stop_signal
);
4774 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4780 /* Resume the remote inferior by using a "vCont" packet. The thread
4781 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4782 resumed thread should be single-stepped and/or signalled. If PTID
4783 equals minus_one_ptid, then all threads are resumed; the thread to
4784 be stepped and/or signalled is given in the global INFERIOR_PTID.
4785 This function returns non-zero iff it resumes the inferior.
4787 This function issues a strict subset of all possible vCont commands at the
4791 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4793 struct remote_state
*rs
= get_remote_state ();
4797 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4798 remote_vcont_probe (rs
);
4800 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
4804 endp
= rs
->buf
+ get_remote_packet_size ();
4806 /* If we could generate a wider range of packets, we'd have to worry
4807 about overflowing BUF. Should there be a generic
4808 "multi-part-packet" packet? */
4810 p
+= xsnprintf (p
, endp
- p
, "vCont");
4812 if (ptid_equal (ptid
, magic_null_ptid
))
4814 /* MAGIC_NULL_PTID means that we don't have any active threads,
4815 so we don't have any TID numbers the inferior will
4816 understand. Make sure to only send forms that do not specify
4818 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4820 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4822 /* Resume all threads (of all processes, or of a single
4823 process), with preference for INFERIOR_PTID. This assumes
4824 inferior_ptid belongs to the set of all threads we are about
4826 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4828 /* Step inferior_ptid, with or without signal. */
4829 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4832 /* Also pass down any pending signaled resumption for other
4833 threads not the current. */
4834 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4836 /* And continue others without a signal. */
4837 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4841 /* Scheduler locking; resume only PTID. */
4842 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4845 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4850 /* In non-stop, the stub replies to vCont with "OK". The stop
4851 reply will be reported asynchronously by means of a `%Stop'
4853 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4854 if (strcmp (rs
->buf
, "OK") != 0)
4855 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4861 /* Tell the remote machine to resume. */
4864 remote_resume (struct target_ops
*ops
,
4865 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4867 struct remote_state
*rs
= get_remote_state ();
4870 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4871 (explained in remote-notif.c:handle_notification) so
4872 remote_notif_process is not called. We need find a place where
4873 it is safe to start a 'vNotif' sequence. It is good to do it
4874 before resuming inferior, because inferior was stopped and no RSP
4875 traffic at that moment. */
4877 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4879 rs
->last_sent_signal
= siggnal
;
4880 rs
->last_sent_step
= step
;
4882 /* The vCont packet doesn't need to specify threads via Hc. */
4883 /* No reverse support (yet) for vCont. */
4884 if (execution_direction
!= EXEC_REVERSE
)
4885 if (remote_vcont_resume (ptid
, step
, siggnal
))
4888 /* All other supported resume packets do use Hc, so set the continue
4890 if (ptid_equal (ptid
, minus_one_ptid
))
4891 set_continue_thread (any_thread_ptid
);
4893 set_continue_thread (ptid
);
4896 if (execution_direction
== EXEC_REVERSE
)
4898 /* We don't pass signals to the target in reverse exec mode. */
4899 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4900 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4903 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
4904 error (_("Remote reverse-step not supported."));
4905 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
4906 error (_("Remote reverse-continue not supported."));
4908 strcpy (buf
, step
? "bs" : "bc");
4910 else if (siggnal
!= GDB_SIGNAL_0
)
4912 buf
[0] = step
? 'S' : 'C';
4913 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4914 buf
[2] = tohex (((int) siggnal
) & 0xf);
4918 strcpy (buf
, step
? "s" : "c");
4923 /* We are about to start executing the inferior, let's register it
4924 with the event loop. NOTE: this is the one place where all the
4925 execution commands end up. We could alternatively do this in each
4926 of the execution commands in infcmd.c. */
4927 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4928 into infcmd.c in order to allow inferior function calls to work
4929 NOT asynchronously. */
4930 if (target_can_async_p ())
4931 target_async (inferior_event_handler
, 0);
4933 /* We've just told the target to resume. The remote server will
4934 wait for the inferior to stop, and then send a stop reply. In
4935 the mean time, we can't start another command/query ourselves
4936 because the stub wouldn't be ready to process it. This applies
4937 only to the base all-stop protocol, however. In non-stop (which
4938 only supports vCont), the stub replies with an "OK", and is
4939 immediate able to process further serial input. */
4941 rs
->waiting_for_stop_reply
= 1;
4945 /* Set up the signal handler for SIGINT, while the target is
4946 executing, ovewriting the 'regular' SIGINT signal handler. */
4948 async_initialize_sigint_signal_handler (void)
4950 signal (SIGINT
, async_handle_remote_sigint
);
4953 /* Signal handler for SIGINT, while the target is executing. */
4955 async_handle_remote_sigint (int sig
)
4957 signal (sig
, async_handle_remote_sigint_twice
);
4958 /* Note we need to go through gdb_call_async_signal_handler in order
4959 to wake up the event loop on Windows. */
4960 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
4963 /* Signal handler for SIGINT, installed after SIGINT has already been
4964 sent once. It will take effect the second time that the user sends
4967 async_handle_remote_sigint_twice (int sig
)
4969 signal (sig
, async_handle_remote_sigint
);
4970 /* See note in async_handle_remote_sigint. */
4971 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
4974 /* Perform the real interruption of the target execution, in response
4977 async_remote_interrupt (gdb_client_data arg
)
4980 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4982 target_stop (inferior_ptid
);
4985 /* Perform interrupt, if the first attempt did not succeed. Just give
4986 up on the target alltogether. */
4988 async_remote_interrupt_twice (gdb_client_data arg
)
4991 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4996 /* Reinstall the usual SIGINT handlers, after the target has
4999 async_cleanup_sigint_signal_handler (void *dummy
)
5001 signal (SIGINT
, handle_sigint
);
5004 /* Send ^C to target to halt it. Target will respond, and send us a
5006 static void (*ofunc
) (int);
5008 /* The command line interface's stop routine. This function is installed
5009 as a signal handler for SIGINT. The first time a user requests a
5010 stop, we call remote_stop to send a break or ^C. If there is no
5011 response from the target (it didn't stop when the user requested it),
5012 we ask the user if he'd like to detach from the target. */
5014 sync_remote_interrupt (int signo
)
5016 /* If this doesn't work, try more severe steps. */
5017 signal (signo
, sync_remote_interrupt_twice
);
5019 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5022 /* The user typed ^C twice. */
5025 sync_remote_interrupt_twice (int signo
)
5027 signal (signo
, ofunc
);
5028 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5029 signal (signo
, sync_remote_interrupt
);
5032 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5033 thread, all threads of a remote process, or all threads of all
5037 remote_stop_ns (ptid_t ptid
)
5039 struct remote_state
*rs
= get_remote_state ();
5041 char *endp
= rs
->buf
+ get_remote_packet_size ();
5043 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5044 remote_vcont_probe (rs
);
5046 if (!rs
->supports_vCont
.t
)
5047 error (_("Remote server does not support stopping threads"));
5049 if (ptid_equal (ptid
, minus_one_ptid
)
5050 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5051 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5056 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5058 if (ptid_is_pid (ptid
))
5059 /* All (-1) threads of process. */
5060 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5063 /* Small optimization: if we already have a stop reply for
5064 this thread, no use in telling the stub we want this
5066 if (peek_stop_reply (ptid
))
5072 write_ptid (p
, endp
, nptid
);
5075 /* In non-stop, we get an immediate OK reply. The stop reply will
5076 come in asynchronously by notification. */
5078 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5079 if (strcmp (rs
->buf
, "OK") != 0)
5080 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5083 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5084 remote target. It is undefined which thread of which process
5085 reports the stop. */
5088 remote_stop_as (ptid_t ptid
)
5090 struct remote_state
*rs
= get_remote_state ();
5092 rs
->ctrlc_pending_p
= 1;
5094 /* If the inferior is stopped already, but the core didn't know
5095 about it yet, just ignore the request. The cached wait status
5096 will be collected in remote_wait. */
5097 if (rs
->cached_wait_status
)
5100 /* Send interrupt_sequence to remote target. */
5101 send_interrupt_sequence ();
5104 /* This is the generic stop called via the target vector. When a target
5105 interrupt is requested, either by the command line or the GUI, we
5106 will eventually end up here. */
5109 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5112 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5115 remote_stop_ns (ptid
);
5117 remote_stop_as (ptid
);
5120 /* Ask the user what to do when an interrupt is received. */
5123 interrupt_query (void)
5125 target_terminal_ours ();
5127 if (target_is_async_p ())
5129 signal (SIGINT
, handle_sigint
);
5134 if (query (_("Interrupted while waiting for the program.\n\
5135 Give up (and stop debugging it)? ")))
5137 remote_unpush_target ();
5142 target_terminal_inferior ();
5145 /* Enable/disable target terminal ownership. Most targets can use
5146 terminal groups to control terminal ownership. Remote targets are
5147 different in that explicit transfer of ownership to/from GDB/target
5151 remote_terminal_inferior (struct target_ops
*self
)
5153 if (!target_async_permitted
)
5154 /* Nothing to do. */
5157 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5158 idempotent. The event-loop GDB talking to an asynchronous target
5159 with a synchronous command calls this function from both
5160 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5161 transfer the terminal to the target when it shouldn't this guard
5163 if (!remote_async_terminal_ours_p
)
5165 delete_file_handler (input_fd
);
5166 remote_async_terminal_ours_p
= 0;
5167 async_initialize_sigint_signal_handler ();
5168 /* NOTE: At this point we could also register our selves as the
5169 recipient of all input. Any characters typed could then be
5170 passed on down to the target. */
5174 remote_terminal_ours (struct target_ops
*self
)
5176 if (!target_async_permitted
)
5177 /* Nothing to do. */
5180 /* See FIXME in remote_terminal_inferior. */
5181 if (remote_async_terminal_ours_p
)
5183 async_cleanup_sigint_signal_handler (NULL
);
5184 add_file_handler (input_fd
, stdin_event_handler
, 0);
5185 remote_async_terminal_ours_p
= 1;
5189 remote_console_output (char *msg
)
5193 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5196 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5200 fputs_unfiltered (tb
, gdb_stdtarg
);
5202 gdb_flush (gdb_stdtarg
);
5205 typedef struct cached_reg
5208 gdb_byte data
[MAX_REGISTER_SIZE
];
5211 DEF_VEC_O(cached_reg_t
);
5213 typedef struct stop_reply
5215 struct notif_event base
;
5217 /* The identifier of the thread about this event */
5220 /* The remote state this event is associated with. When the remote
5221 connection, represented by a remote_state object, is closed,
5222 all the associated stop_reply events should be released. */
5223 struct remote_state
*rs
;
5225 struct target_waitstatus ws
;
5227 /* Expedited registers. This makes remote debugging a bit more
5228 efficient for those targets that provide critical registers as
5229 part of their normal status mechanism (as another roundtrip to
5230 fetch them is avoided). */
5231 VEC(cached_reg_t
) *regcache
;
5233 enum target_stop_reason stop_reason
;
5235 CORE_ADDR watch_data_address
;
5240 DECLARE_QUEUE_P (stop_reply_p
);
5241 DEFINE_QUEUE_P (stop_reply_p
);
5242 /* The list of already fetched and acknowledged stop events. This
5243 queue is used for notification Stop, and other notifications
5244 don't need queue for their events, because the notification events
5245 of Stop can't be consumed immediately, so that events should be
5246 queued first, and be consumed by remote_wait_{ns,as} one per
5247 time. Other notifications can consume their events immediately,
5248 so queue is not needed for them. */
5249 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5252 stop_reply_xfree (struct stop_reply
*r
)
5254 notif_event_xfree ((struct notif_event
*) r
);
5258 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5259 struct notif_event
*event
)
5261 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5265 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5266 struct notif_event
*event
)
5268 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5271 putpkt ((char *) self
->ack_command
);
5273 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5274 /* We got an unknown stop reply. */
5275 error (_("Unknown stop reply"));
5277 push_stop_reply (stop_reply
);
5281 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5283 /* We can't get pending events in remote_notif_process for
5284 notification stop, and we have to do this in remote_wait_ns
5285 instead. If we fetch all queued events from stub, remote stub
5286 may exit and we have no chance to process them back in
5288 mark_async_event_handler (remote_async_inferior_event_token
);
5293 stop_reply_dtr (struct notif_event
*event
)
5295 struct stop_reply
*r
= (struct stop_reply
*) event
;
5297 VEC_free (cached_reg_t
, r
->regcache
);
5300 static struct notif_event
*
5301 remote_notif_stop_alloc_reply (void)
5303 struct notif_event
*r
5304 = (struct notif_event
*) XNEW (struct stop_reply
);
5306 r
->dtr
= stop_reply_dtr
;
5311 /* A client of notification Stop. */
5313 struct notif_client notif_client_stop
=
5317 remote_notif_stop_parse
,
5318 remote_notif_stop_ack
,
5319 remote_notif_stop_can_get_pending_events
,
5320 remote_notif_stop_alloc_reply
,
5324 /* A parameter to pass data in and out. */
5326 struct queue_iter_param
5329 struct stop_reply
*output
;
5332 /* Remove stop replies in the queue if its pid is equal to the given
5336 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5337 QUEUE_ITER (stop_reply_p
) *iter
,
5341 struct queue_iter_param
*param
= data
;
5342 struct inferior
*inf
= param
->input
;
5344 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5346 stop_reply_xfree (event
);
5347 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5353 /* Discard all pending stop replies of inferior INF. */
5356 discard_pending_stop_replies (struct inferior
*inf
)
5359 struct queue_iter_param param
;
5360 struct stop_reply
*reply
;
5361 struct remote_state
*rs
= get_remote_state ();
5362 struct remote_notif_state
*rns
= rs
->notif_state
;
5364 /* This function can be notified when an inferior exists. When the
5365 target is not remote, the notification state is NULL. */
5366 if (rs
->remote_desc
== NULL
)
5369 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5371 /* Discard the in-flight notification. */
5372 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5374 stop_reply_xfree (reply
);
5375 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5379 param
.output
= NULL
;
5380 /* Discard the stop replies we have already pulled with
5382 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5383 remove_stop_reply_for_inferior
, ¶m
);
5386 /* If its remote state is equal to the given remote state,
5387 remove EVENT from the stop reply queue. */
5390 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5391 QUEUE_ITER (stop_reply_p
) *iter
,
5395 struct queue_iter_param
*param
= data
;
5396 struct remote_state
*rs
= param
->input
;
5398 if (event
->rs
== rs
)
5400 stop_reply_xfree (event
);
5401 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5407 /* Discard the stop replies for RS in stop_reply_queue. */
5410 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5412 struct queue_iter_param param
;
5415 param
.output
= NULL
;
5416 /* Discard the stop replies we have already pulled with
5418 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5419 remove_stop_reply_of_remote_state
, ¶m
);
5422 /* A parameter to pass data in and out. */
5425 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5426 QUEUE_ITER (stop_reply_p
) *iter
,
5430 struct queue_iter_param
*param
= data
;
5431 ptid_t
*ptid
= param
->input
;
5433 if (ptid_match (event
->ptid
, *ptid
))
5435 param
->output
= event
;
5436 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5443 /* Remove the first reply in 'stop_reply_queue' which matches
5446 static struct stop_reply
*
5447 remote_notif_remove_queued_reply (ptid_t ptid
)
5449 struct queue_iter_param param
;
5451 param
.input
= &ptid
;
5452 param
.output
= NULL
;
5454 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5455 remote_notif_remove_once_on_match
, ¶m
);
5457 fprintf_unfiltered (gdb_stdlog
,
5458 "notif: discard queued event: 'Stop' in %s\n",
5459 target_pid_to_str (ptid
));
5461 return param
.output
;
5464 /* Look for a queued stop reply belonging to PTID. If one is found,
5465 remove it from the queue, and return it. Returns NULL if none is
5466 found. If there are still queued events left to process, tell the
5467 event loop to get back to target_wait soon. */
5469 static struct stop_reply
*
5470 queued_stop_reply (ptid_t ptid
)
5472 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5474 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5475 /* There's still at least an event left. */
5476 mark_async_event_handler (remote_async_inferior_event_token
);
5481 /* Push a fully parsed stop reply in the stop reply queue. Since we
5482 know that we now have at least one queued event left to pass to the
5483 core side, tell the event loop to get back to target_wait soon. */
5486 push_stop_reply (struct stop_reply
*new_event
)
5488 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5491 fprintf_unfiltered (gdb_stdlog
,
5492 "notif: push 'Stop' %s to queue %d\n",
5493 target_pid_to_str (new_event
->ptid
),
5494 QUEUE_length (stop_reply_p
,
5497 mark_async_event_handler (remote_async_inferior_event_token
);
5501 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5502 QUEUE_ITER (stop_reply_p
) *iter
,
5503 struct stop_reply
*event
,
5506 ptid_t
*ptid
= data
;
5508 return !(ptid_equal (*ptid
, event
->ptid
)
5509 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5512 /* Returns true if we have a stop reply for PTID. */
5515 peek_stop_reply (ptid_t ptid
)
5517 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5518 stop_reply_match_ptid_and_ws
, &ptid
);
5521 /* Skip PACKET until the next semi-colon (or end of string). */
5524 skip_to_semicolon (char *p
)
5526 while (*p
!= '\0' && *p
!= ';')
5531 /* Parse the stop reply in BUF. Either the function succeeds, and the
5532 result is stored in EVENT, or throws an error. */
5535 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5537 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5541 event
->ptid
= null_ptid
;
5542 event
->rs
= get_remote_state ();
5543 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5544 event
->ws
.value
.integer
= 0;
5545 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5546 event
->regcache
= NULL
;
5551 case 'T': /* Status with PC, SP, FP, ... */
5552 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5553 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5555 n... = register number
5556 r... = register contents
5559 p
= &buf
[3]; /* after Txx */
5565 p1
= strchr (p
, ':');
5567 error (_("Malformed packet(a) (missing colon): %s\n\
5571 error (_("Malformed packet(a) (missing register number): %s\n\
5575 /* Some "registers" are actually extended stop information.
5576 Note if you're adding a new entry here: GDB 7.9 and
5577 earlier assume that all register "numbers" that start
5578 with an hex digit are real register numbers. Make sure
5579 the server only sends such a packet if it knows the
5580 client understands it. */
5582 if (strncmp (p
, "thread", p1
- p
) == 0)
5583 event
->ptid
= read_ptid (++p1
, &p
);
5584 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5585 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5586 || (strncmp (p
, "awatch", p1
- p
) == 0))
5588 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
5589 p
= unpack_varlen_hex (++p1
, &addr
);
5590 event
->watch_data_address
= (CORE_ADDR
) addr
;
5592 else if (strncmp (p
, "swbreak", p1
- p
) == 0)
5594 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
5596 /* Make sure the stub doesn't forget to indicate support
5598 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
5599 error (_("Unexpected swbreak stop reason"));
5601 /* The value part is documented as "must be empty",
5602 though we ignore it, in case we ever decide to make
5603 use of it in a backward compatible way. */
5604 p
= skip_to_semicolon (p1
+ 1);
5606 else if (strncmp (p
, "hwbreak", p1
- p
) == 0)
5608 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
5610 /* Make sure the stub doesn't forget to indicate support
5612 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
5613 error (_("Unexpected hwbreak stop reason"));
5616 p
= skip_to_semicolon (p1
+ 1);
5618 else if (strncmp (p
, "library", p1
- p
) == 0)
5620 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5621 p
= skip_to_semicolon (p1
+ 1);
5623 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5625 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5626 /* p1 will indicate "begin" or "end", but it makes
5627 no difference for now, so ignore it. */
5628 p
= skip_to_semicolon (p1
+ 1);
5630 else if (strncmp (p
, "core", p1
- p
) == 0)
5634 p
= unpack_varlen_hex (++p1
, &c
);
5642 /* Maybe a real ``P'' register number. */
5643 p_temp
= unpack_varlen_hex (p
, &pnum
);
5644 /* If the first invalid character is the colon, we got a
5645 register number. Otherwise, it's an unknown stop
5649 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5650 cached_reg_t cached_reg
;
5653 error (_("Remote sent bad register number %s: %s\n\
5655 hex_string (pnum
), p
, buf
);
5657 cached_reg
.num
= reg
->regnum
;
5660 fieldsize
= hex2bin (p
, cached_reg
.data
,
5661 register_size (target_gdbarch (),
5664 if (fieldsize
< register_size (target_gdbarch (),
5666 warning (_("Remote reply is too short: %s"), buf
);
5668 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5672 /* Not a number. Silently skip unknown optional
5674 p
= skip_to_semicolon (p1
+ 1);
5679 error (_("Remote register badly formatted: %s\nhere: %s"),
5684 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5688 case 'S': /* Old style status, just signal only. */
5692 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5693 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5694 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5695 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5697 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5700 case 'W': /* Target exited. */
5707 /* GDB used to accept only 2 hex chars here. Stubs should
5708 only send more if they detect GDB supports multi-process
5710 p
= unpack_varlen_hex (&buf
[1], &value
);
5714 /* The remote process exited. */
5715 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5716 event
->ws
.value
.integer
= value
;
5720 /* The remote process exited with a signal. */
5721 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5722 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5723 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5725 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5728 /* If no process is specified, assume inferior_ptid. */
5729 pid
= ptid_get_pid (inferior_ptid
);
5738 else if (startswith (p
, "process:"))
5742 p
+= sizeof ("process:") - 1;
5743 unpack_varlen_hex (p
, &upid
);
5747 error (_("unknown stop reply packet: %s"), buf
);
5750 error (_("unknown stop reply packet: %s"), buf
);
5751 event
->ptid
= pid_to_ptid (pid
);
5756 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5757 error (_("No process or thread specified in stop reply: %s"), buf
);
5760 /* When the stub wants to tell GDB about a new notification reply, it
5761 sends a notification (%Stop, for example). Those can come it at
5762 any time, hence, we have to make sure that any pending
5763 putpkt/getpkt sequence we're making is finished, before querying
5764 the stub for more events with the corresponding ack command
5765 (vStopped, for example). E.g., if we started a vStopped sequence
5766 immediately upon receiving the notification, something like this
5774 1.6) <-- (registers reply to step #1.3)
5776 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5779 To solve this, whenever we parse a %Stop notification successfully,
5780 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5781 doing whatever we were doing:
5787 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5788 2.5) <-- (registers reply to step #2.3)
5790 Eventualy after step #2.5, we return to the event loop, which
5791 notices there's an event on the
5792 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5793 associated callback --- the function below. At this point, we're
5794 always safe to start a vStopped sequence. :
5797 2.7) <-- T05 thread:2
5803 remote_notif_get_pending_events (struct notif_client
*nc
)
5805 struct remote_state
*rs
= get_remote_state ();
5807 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5810 fprintf_unfiltered (gdb_stdlog
,
5811 "notif: process: '%s' ack pending event\n",
5815 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5816 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5820 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5821 if (strcmp (rs
->buf
, "OK") == 0)
5824 remote_notif_ack (nc
, rs
->buf
);
5830 fprintf_unfiltered (gdb_stdlog
,
5831 "notif: process: '%s' no pending reply\n",
5836 /* Called when it is decided that STOP_REPLY holds the info of the
5837 event that is to be returned to the core. This function always
5838 destroys STOP_REPLY. */
5841 process_stop_reply (struct stop_reply
*stop_reply
,
5842 struct target_waitstatus
*status
)
5846 *status
= stop_reply
->ws
;
5847 ptid
= stop_reply
->ptid
;
5849 /* If no thread/process was reported by the stub, assume the current
5851 if (ptid_equal (ptid
, null_ptid
))
5852 ptid
= inferior_ptid
;
5854 if (status
->kind
!= TARGET_WAITKIND_EXITED
5855 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5857 struct remote_state
*rs
= get_remote_state ();
5859 /* Expedited registers. */
5860 if (stop_reply
->regcache
)
5862 struct regcache
*regcache
5863 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5868 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5870 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5871 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5874 rs
->stop_reason
= stop_reply
->stop_reason
;
5875 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5877 remote_notice_new_inferior (ptid
, 0);
5878 demand_private_info (ptid
)->core
= stop_reply
->core
;
5881 stop_reply_xfree (stop_reply
);
5885 /* The non-stop mode version of target_wait. */
5888 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5890 struct remote_state
*rs
= get_remote_state ();
5891 struct stop_reply
*stop_reply
;
5895 /* If in non-stop mode, get out of getpkt even if a
5896 notification is received. */
5898 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5899 0 /* forever */, &is_notif
);
5902 if (ret
!= -1 && !is_notif
)
5905 case 'E': /* Error of some sort. */
5906 /* We're out of sync with the target now. Did it continue
5907 or not? We can't tell which thread it was in non-stop,
5908 so just ignore this. */
5909 warning (_("Remote failure reply: %s"), rs
->buf
);
5911 case 'O': /* Console output. */
5912 remote_console_output (rs
->buf
+ 1);
5915 warning (_("Invalid remote reply: %s"), rs
->buf
);
5919 /* Acknowledge a pending stop reply that may have arrived in the
5921 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5922 remote_notif_get_pending_events (¬if_client_stop
);
5924 /* If indeed we noticed a stop reply, we're done. */
5925 stop_reply
= queued_stop_reply (ptid
);
5926 if (stop_reply
!= NULL
)
5927 return process_stop_reply (stop_reply
, status
);
5929 /* Still no event. If we're just polling for an event, then
5930 return to the event loop. */
5931 if (options
& TARGET_WNOHANG
)
5933 status
->kind
= TARGET_WAITKIND_IGNORE
;
5934 return minus_one_ptid
;
5937 /* Otherwise do a blocking wait. */
5938 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5939 1 /* forever */, &is_notif
);
5943 /* Wait until the remote machine stops, then return, storing status in
5944 STATUS just as `wait' would. */
5947 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5949 struct remote_state
*rs
= get_remote_state ();
5950 ptid_t event_ptid
= null_ptid
;
5952 struct stop_reply
*stop_reply
;
5956 status
->kind
= TARGET_WAITKIND_IGNORE
;
5957 status
->value
.integer
= 0;
5959 stop_reply
= queued_stop_reply (ptid
);
5960 if (stop_reply
!= NULL
)
5961 return process_stop_reply (stop_reply
, status
);
5963 if (rs
->cached_wait_status
)
5964 /* Use the cached wait status, but only once. */
5965 rs
->cached_wait_status
= 0;
5971 if (!target_is_async_p ())
5973 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5974 /* If the user hit C-c before this packet, or between packets,
5975 pretend that it was hit right here. */
5976 if (check_quit_flag ())
5979 sync_remote_interrupt (SIGINT
);
5983 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5984 _never_ wait for ever -> test on target_is_async_p().
5985 However, before we do that we need to ensure that the caller
5986 knows how to take the target into/out of async mode. */
5987 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5988 wait_forever_enabled_p
, &is_notif
);
5990 if (!target_is_async_p ())
5991 signal (SIGINT
, ofunc
);
5993 /* GDB gets a notification. Return to core as this event is
5995 if (ret
!= -1 && is_notif
)
5996 return minus_one_ptid
;
6001 rs
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6003 /* We got something. */
6004 rs
->waiting_for_stop_reply
= 0;
6006 /* Assume that the target has acknowledged Ctrl-C unless we receive
6007 an 'F' or 'O' packet. */
6008 if (buf
[0] != 'F' && buf
[0] != 'O')
6009 rs
->ctrlc_pending_p
= 0;
6013 case 'E': /* Error of some sort. */
6014 /* We're out of sync with the target now. Did it continue or
6015 not? Not is more likely, so report a stop. */
6016 warning (_("Remote failure reply: %s"), buf
);
6017 status
->kind
= TARGET_WAITKIND_STOPPED
;
6018 status
->value
.sig
= GDB_SIGNAL_0
;
6020 case 'F': /* File-I/O request. */
6021 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6022 rs
->ctrlc_pending_p
= 0;
6024 case 'T': case 'S': case 'X': case 'W':
6026 struct stop_reply
*stop_reply
6027 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6030 event_ptid
= process_stop_reply (stop_reply
, status
);
6033 case 'O': /* Console output. */
6034 remote_console_output (buf
+ 1);
6036 /* The target didn't really stop; keep waiting. */
6037 rs
->waiting_for_stop_reply
= 1;
6041 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6043 /* Zero length reply means that we tried 'S' or 'C' and the
6044 remote system doesn't support it. */
6045 target_terminal_ours_for_output ();
6047 ("Can't send signals to this remote system. %s not sent.\n",
6048 gdb_signal_to_name (rs
->last_sent_signal
));
6049 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6050 target_terminal_inferior ();
6052 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6053 putpkt ((char *) buf
);
6055 /* We just told the target to resume, so a stop reply is in
6057 rs
->waiting_for_stop_reply
= 1;
6060 /* else fallthrough */
6062 warning (_("Invalid remote reply: %s"), buf
);
6064 rs
->waiting_for_stop_reply
= 1;
6068 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6070 /* Nothing interesting happened. If we're doing a non-blocking
6071 poll, we're done. Otherwise, go back to waiting. */
6072 if (options
& TARGET_WNOHANG
)
6073 return minus_one_ptid
;
6077 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6078 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6080 if (!ptid_equal (event_ptid
, null_ptid
))
6081 record_currthread (rs
, event_ptid
);
6083 event_ptid
= inferior_ptid
;
6086 /* A process exit. Invalidate our notion of current thread. */
6087 record_currthread (rs
, minus_one_ptid
);
6092 /* Wait until the remote machine stops, then return, storing status in
6093 STATUS just as `wait' would. */
6096 remote_wait (struct target_ops
*ops
,
6097 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6102 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6104 event_ptid
= remote_wait_as (ptid
, status
, options
);
6106 if (target_is_async_p ())
6108 /* If there are are events left in the queue tell the event loop
6110 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6111 mark_async_event_handler (remote_async_inferior_event_token
);
6117 /* Fetch a single register using a 'p' packet. */
6120 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6122 struct remote_state
*rs
= get_remote_state ();
6124 char regp
[MAX_REGISTER_SIZE
];
6127 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
6130 if (reg
->pnum
== -1)
6135 p
+= hexnumstr (p
, reg
->pnum
);
6138 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6142 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6146 case PACKET_UNKNOWN
:
6149 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6150 gdbarch_register_name (get_regcache_arch (regcache
),
6155 /* If this register is unfetchable, tell the regcache. */
6158 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6162 /* Otherwise, parse and supply the value. */
6168 error (_("fetch_register_using_p: early buf termination"));
6170 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6173 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6177 /* Fetch the registers included in the target's 'g' packet. */
6180 send_g_packet (void)
6182 struct remote_state
*rs
= get_remote_state ();
6185 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6186 remote_send (&rs
->buf
, &rs
->buf_size
);
6188 /* We can get out of synch in various cases. If the first character
6189 in the buffer is not a hex character, assume that has happened
6190 and try to fetch another packet to read. */
6191 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6192 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6193 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6194 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6197 fprintf_unfiltered (gdb_stdlog
,
6198 "Bad register packet; fetching a new packet\n");
6199 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6202 buf_len
= strlen (rs
->buf
);
6204 /* Sanity check the received packet. */
6205 if (buf_len
% 2 != 0)
6206 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6212 process_g_packet (struct regcache
*regcache
)
6214 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6215 struct remote_state
*rs
= get_remote_state ();
6216 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6221 buf_len
= strlen (rs
->buf
);
6223 /* Further sanity checks, with knowledge of the architecture. */
6224 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6225 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6227 /* Save the size of the packet sent to us by the target. It is used
6228 as a heuristic when determining the max size of packets that the
6229 target can safely receive. */
6230 if (rsa
->actual_register_packet_size
== 0)
6231 rsa
->actual_register_packet_size
= buf_len
;
6233 /* If this is smaller than we guessed the 'g' packet would be,
6234 update our records. A 'g' reply that doesn't include a register's
6235 value implies either that the register is not available, or that
6236 the 'p' packet must be used. */
6237 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6239 rsa
->sizeof_g_packet
= buf_len
/ 2;
6241 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6243 if (rsa
->regs
[i
].pnum
== -1)
6246 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6247 rsa
->regs
[i
].in_g_packet
= 0;
6249 rsa
->regs
[i
].in_g_packet
= 1;
6253 regs
= alloca (rsa
->sizeof_g_packet
);
6255 /* Unimplemented registers read as all bits zero. */
6256 memset (regs
, 0, rsa
->sizeof_g_packet
);
6258 /* Reply describes registers byte by byte, each byte encoded as two
6259 hex characters. Suck them all up, then supply them to the
6260 register cacheing/storage mechanism. */
6263 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6265 if (p
[0] == 0 || p
[1] == 0)
6266 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6267 internal_error (__FILE__
, __LINE__
,
6268 _("unexpected end of 'g' packet reply"));
6270 if (p
[0] == 'x' && p
[1] == 'x')
6271 regs
[i
] = 0; /* 'x' */
6273 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6277 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6279 struct packet_reg
*r
= &rsa
->regs
[i
];
6283 if (r
->offset
* 2 >= strlen (rs
->buf
))
6284 /* This shouldn't happen - we adjusted in_g_packet above. */
6285 internal_error (__FILE__
, __LINE__
,
6286 _("unexpected end of 'g' packet reply"));
6287 else if (rs
->buf
[r
->offset
* 2] == 'x')
6289 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6290 /* The register isn't available, mark it as such (at
6291 the same time setting the value to zero). */
6292 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6295 regcache_raw_supply (regcache
, r
->regnum
,
6302 fetch_registers_using_g (struct regcache
*regcache
)
6305 process_g_packet (regcache
);
6308 /* Make the remote selected traceframe match GDB's selected
6312 set_remote_traceframe (void)
6315 struct remote_state
*rs
= get_remote_state ();
6317 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6320 /* Avoid recursion, remote_trace_find calls us again. */
6321 rs
->remote_traceframe_number
= get_traceframe_number ();
6323 newnum
= target_trace_find (tfind_number
,
6324 get_traceframe_number (), 0, 0, NULL
);
6326 /* Should not happen. If it does, all bets are off. */
6327 if (newnum
!= get_traceframe_number ())
6328 warning (_("could not set remote traceframe"));
6332 remote_fetch_registers (struct target_ops
*ops
,
6333 struct regcache
*regcache
, int regnum
)
6335 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6338 set_remote_traceframe ();
6339 set_general_thread (inferior_ptid
);
6343 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6345 gdb_assert (reg
!= NULL
);
6347 /* If this register might be in the 'g' packet, try that first -
6348 we are likely to read more than one register. If this is the
6349 first 'g' packet, we might be overly optimistic about its
6350 contents, so fall back to 'p'. */
6351 if (reg
->in_g_packet
)
6353 fetch_registers_using_g (regcache
);
6354 if (reg
->in_g_packet
)
6358 if (fetch_register_using_p (regcache
, reg
))
6361 /* This register is not available. */
6362 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6367 fetch_registers_using_g (regcache
);
6369 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6370 if (!rsa
->regs
[i
].in_g_packet
)
6371 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6373 /* This register is not available. */
6374 regcache_raw_supply (regcache
, i
, NULL
);
6378 /* Prepare to store registers. Since we may send them all (using a
6379 'G' request), we have to read out the ones we don't want to change
6383 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6385 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6387 gdb_byte buf
[MAX_REGISTER_SIZE
];
6389 /* Make sure the entire registers array is valid. */
6390 switch (packet_support (PACKET_P
))
6392 case PACKET_DISABLE
:
6393 case PACKET_SUPPORT_UNKNOWN
:
6394 /* Make sure all the necessary registers are cached. */
6395 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6396 if (rsa
->regs
[i
].in_g_packet
)
6397 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6404 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6405 packet was not recognized. */
6408 store_register_using_P (const struct regcache
*regcache
,
6409 struct packet_reg
*reg
)
6411 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6412 struct remote_state
*rs
= get_remote_state ();
6413 /* Try storing a single register. */
6414 char *buf
= rs
->buf
;
6415 gdb_byte regp
[MAX_REGISTER_SIZE
];
6418 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
6421 if (reg
->pnum
== -1)
6424 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6425 p
= buf
+ strlen (buf
);
6426 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6427 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6429 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6431 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6436 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6437 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6438 case PACKET_UNKNOWN
:
6441 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6445 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6446 contents of the register cache buffer. FIXME: ignores errors. */
6449 store_registers_using_G (const struct regcache
*regcache
)
6451 struct remote_state
*rs
= get_remote_state ();
6452 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6456 /* Extract all the registers in the regcache copying them into a
6461 regs
= alloca (rsa
->sizeof_g_packet
);
6462 memset (regs
, 0, rsa
->sizeof_g_packet
);
6463 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6465 struct packet_reg
*r
= &rsa
->regs
[i
];
6468 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6472 /* Command describes registers byte by byte,
6473 each byte encoded as two hex characters. */
6476 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6478 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6480 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6481 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6482 error (_("Could not write registers; remote failure reply '%s'"),
6486 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6487 of the register cache buffer. FIXME: ignores errors. */
6490 remote_store_registers (struct target_ops
*ops
,
6491 struct regcache
*regcache
, int regnum
)
6493 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6496 set_remote_traceframe ();
6497 set_general_thread (inferior_ptid
);
6501 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6503 gdb_assert (reg
!= NULL
);
6505 /* Always prefer to store registers using the 'P' packet if
6506 possible; we often change only a small number of registers.
6507 Sometimes we change a larger number; we'd need help from a
6508 higher layer to know to use 'G'. */
6509 if (store_register_using_P (regcache
, reg
))
6512 /* For now, don't complain if we have no way to write the
6513 register. GDB loses track of unavailable registers too
6514 easily. Some day, this may be an error. We don't have
6515 any way to read the register, either... */
6516 if (!reg
->in_g_packet
)
6519 store_registers_using_G (regcache
);
6523 store_registers_using_G (regcache
);
6525 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6526 if (!rsa
->regs
[i
].in_g_packet
)
6527 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6528 /* See above for why we do not issue an error here. */
6533 /* Return the number of hex digits in num. */
6536 hexnumlen (ULONGEST num
)
6540 for (i
= 0; num
!= 0; i
++)
6546 /* Set BUF to the minimum number of hex digits representing NUM. */
6549 hexnumstr (char *buf
, ULONGEST num
)
6551 int len
= hexnumlen (num
);
6553 return hexnumnstr (buf
, num
, len
);
6557 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6560 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6566 for (i
= width
- 1; i
>= 0; i
--)
6568 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6575 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6578 remote_address_masked (CORE_ADDR addr
)
6580 unsigned int address_size
= remote_address_size
;
6582 /* If "remoteaddresssize" was not set, default to target address size. */
6584 address_size
= gdbarch_addr_bit (target_gdbarch ());
6586 if (address_size
> 0
6587 && address_size
< (sizeof (ULONGEST
) * 8))
6589 /* Only create a mask when that mask can safely be constructed
6590 in a ULONGEST variable. */
6593 mask
= (mask
<< address_size
) - 1;
6599 /* Determine whether the remote target supports binary downloading.
6600 This is accomplished by sending a no-op memory write of zero length
6601 to the target at the specified address. It does not suffice to send
6602 the whole packet, since many stubs strip the eighth bit and
6603 subsequently compute a wrong checksum, which causes real havoc with
6606 NOTE: This can still lose if the serial line is not eight-bit
6607 clean. In cases like this, the user should clear "remote
6611 check_binary_download (CORE_ADDR addr
)
6613 struct remote_state
*rs
= get_remote_state ();
6615 switch (packet_support (PACKET_X
))
6617 case PACKET_DISABLE
:
6621 case PACKET_SUPPORT_UNKNOWN
:
6627 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6629 p
+= hexnumstr (p
, (ULONGEST
) 0);
6633 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6634 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6636 if (rs
->buf
[0] == '\0')
6639 fprintf_unfiltered (gdb_stdlog
,
6640 "binary downloading NOT "
6641 "supported by target\n");
6642 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6647 fprintf_unfiltered (gdb_stdlog
,
6648 "binary downloading supported by target\n");
6649 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6656 /* Write memory data directly to the remote machine.
6657 This does not inform the data cache; the data cache uses this.
6658 HEADER is the starting part of the packet.
6659 MEMADDR is the address in the remote memory space.
6660 MYADDR is the address of the buffer in our space.
6661 LEN is the number of bytes.
6662 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6663 should send data as binary ('X'), or hex-encoded ('M').
6665 The function creates packet of the form
6666 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6668 where encoding of <DATA> is termined by PACKET_FORMAT.
6670 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6673 Return the transferred status, error or OK (an
6674 'enum target_xfer_status' value). Save the number of bytes
6675 transferred in *XFERED_LEN. Only transfer a single packet. */
6677 static enum target_xfer_status
6678 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6679 const gdb_byte
*myaddr
, ULONGEST len
,
6680 ULONGEST
*xfered_len
, char packet_format
,
6683 struct remote_state
*rs
= get_remote_state ();
6693 if (packet_format
!= 'X' && packet_format
!= 'M')
6694 internal_error (__FILE__
, __LINE__
,
6695 _("remote_write_bytes_aux: bad packet format"));
6698 return TARGET_XFER_EOF
;
6700 payload_size
= get_memory_write_packet_size ();
6702 /* The packet buffer will be large enough for the payload;
6703 get_memory_packet_size ensures this. */
6706 /* Compute the size of the actual payload by subtracting out the
6707 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6709 payload_size
-= strlen ("$,:#NN");
6711 /* The comma won't be used. */
6713 header_length
= strlen (header
);
6714 payload_size
-= header_length
;
6715 payload_size
-= hexnumlen (memaddr
);
6717 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6719 strcat (rs
->buf
, header
);
6720 p
= rs
->buf
+ strlen (header
);
6722 /* Compute a best guess of the number of bytes actually transfered. */
6723 if (packet_format
== 'X')
6725 /* Best guess at number of bytes that will fit. */
6726 todo
= min (len
, payload_size
);
6728 payload_size
-= hexnumlen (todo
);
6729 todo
= min (todo
, payload_size
);
6733 /* Num bytes that will fit. */
6734 todo
= min (len
, payload_size
/ 2);
6736 payload_size
-= hexnumlen (todo
);
6737 todo
= min (todo
, payload_size
/ 2);
6741 internal_error (__FILE__
, __LINE__
,
6742 _("minimum packet size too small to write data"));
6744 /* If we already need another packet, then try to align the end
6745 of this packet to a useful boundary. */
6746 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6747 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6749 /* Append "<memaddr>". */
6750 memaddr
= remote_address_masked (memaddr
);
6751 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6758 /* Append <len>. Retain the location/size of <len>. It may need to
6759 be adjusted once the packet body has been created. */
6761 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6769 /* Append the packet body. */
6770 if (packet_format
== 'X')
6772 /* Binary mode. Send target system values byte by byte, in
6773 increasing byte addresses. Only escape certain critical
6775 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6776 &nr_bytes
, payload_size
);
6778 /* If not all TODO bytes fit, then we'll need another packet. Make
6779 a second try to keep the end of the packet aligned. Don't do
6780 this if the packet is tiny. */
6781 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6785 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6787 if (new_nr_bytes
!= nr_bytes
)
6788 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6789 (gdb_byte
*) p
, &nr_bytes
,
6793 p
+= payload_length
;
6794 if (use_length
&& nr_bytes
< todo
)
6796 /* Escape chars have filled up the buffer prematurely,
6797 and we have actually sent fewer bytes than planned.
6798 Fix-up the length field of the packet. Use the same
6799 number of characters as before. */
6800 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6801 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6806 /* Normal mode: Send target system values byte by byte, in
6807 increasing byte addresses. Each byte is encoded as a two hex
6809 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6813 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6814 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6816 if (rs
->buf
[0] == 'E')
6817 return TARGET_XFER_E_IO
;
6819 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6820 fewer bytes than we'd planned. */
6821 *xfered_len
= (ULONGEST
) nr_bytes
;
6822 return TARGET_XFER_OK
;
6825 /* Write memory data directly to the remote machine.
6826 This does not inform the data cache; the data cache uses this.
6827 MEMADDR is the address in the remote memory space.
6828 MYADDR is the address of the buffer in our space.
6829 LEN is the number of bytes.
6831 Return the transferred status, error or OK (an
6832 'enum target_xfer_status' value). Save the number of bytes
6833 transferred in *XFERED_LEN. Only transfer a single packet. */
6835 static enum target_xfer_status
6836 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6837 ULONGEST
*xfered_len
)
6839 char *packet_format
= 0;
6841 /* Check whether the target supports binary download. */
6842 check_binary_download (memaddr
);
6844 switch (packet_support (PACKET_X
))
6847 packet_format
= "X";
6849 case PACKET_DISABLE
:
6850 packet_format
= "M";
6852 case PACKET_SUPPORT_UNKNOWN
:
6853 internal_error (__FILE__
, __LINE__
,
6854 _("remote_write_bytes: bad internal state"));
6856 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6859 return remote_write_bytes_aux (packet_format
,
6860 memaddr
, myaddr
, len
, xfered_len
,
6861 packet_format
[0], 1);
6864 /* Read memory data directly from the remote machine.
6865 This does not use the data cache; the data cache uses this.
6866 MEMADDR is the address in the remote memory space.
6867 MYADDR is the address of the buffer in our space.
6868 LEN is the number of bytes.
6870 Return the transferred status, error or OK (an
6871 'enum target_xfer_status' value). Save the number of bytes
6872 transferred in *XFERED_LEN. */
6874 static enum target_xfer_status
6875 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6876 ULONGEST
*xfered_len
)
6878 struct remote_state
*rs
= get_remote_state ();
6879 int max_buf_size
; /* Max size of packet output buffer. */
6884 max_buf_size
= get_memory_read_packet_size ();
6885 /* The packet buffer will be large enough for the payload;
6886 get_memory_packet_size ensures this. */
6888 /* Number if bytes that will fit. */
6889 todo
= min (len
, max_buf_size
/ 2);
6891 /* Construct "m"<memaddr>","<len>". */
6892 memaddr
= remote_address_masked (memaddr
);
6895 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6897 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6900 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6901 if (rs
->buf
[0] == 'E'
6902 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6903 && rs
->buf
[3] == '\0')
6904 return TARGET_XFER_E_IO
;
6905 /* Reply describes memory byte by byte, each byte encoded as two hex
6908 i
= hex2bin (p
, myaddr
, todo
);
6909 /* Return what we have. Let higher layers handle partial reads. */
6910 *xfered_len
= (ULONGEST
) i
;
6911 return TARGET_XFER_OK
;
6914 /* Using the set of read-only target sections of remote, read live
6917 For interface/parameters/return description see target.h,
6920 static enum target_xfer_status
6921 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
6922 ULONGEST memaddr
, ULONGEST len
,
6923 ULONGEST
*xfered_len
)
6925 struct target_section
*secp
;
6926 struct target_section_table
*table
;
6928 secp
= target_section_by_addr (ops
, memaddr
);
6930 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
6931 secp
->the_bfd_section
)
6934 struct target_section
*p
;
6935 ULONGEST memend
= memaddr
+ len
;
6937 table
= target_get_section_table (ops
);
6939 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
6941 if (memaddr
>= p
->addr
)
6943 if (memend
<= p
->endaddr
)
6945 /* Entire transfer is within this section. */
6946 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6949 else if (memaddr
>= p
->endaddr
)
6951 /* This section ends before the transfer starts. */
6956 /* This section overlaps the transfer. Just do half. */
6957 len
= p
->endaddr
- memaddr
;
6958 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6965 return TARGET_XFER_EOF
;
6968 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6969 first if the requested memory is unavailable in traceframe.
6970 Otherwise, fall back to remote_read_bytes_1. */
6972 static enum target_xfer_status
6973 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
6974 gdb_byte
*myaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
6977 return TARGET_XFER_EOF
;
6979 if (get_traceframe_number () != -1)
6981 VEC(mem_range_s
) *available
;
6983 /* If we fail to get the set of available memory, then the
6984 target does not support querying traceframe info, and so we
6985 attempt reading from the traceframe anyway (assuming the
6986 target implements the old QTro packet then). */
6987 if (traceframe_available_memory (&available
, memaddr
, len
))
6989 struct cleanup
*old_chain
;
6991 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
6993 if (VEC_empty (mem_range_s
, available
)
6994 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
6996 enum target_xfer_status res
;
6998 /* Don't read into the traceframe's available
7000 if (!VEC_empty (mem_range_s
, available
))
7002 LONGEST oldlen
= len
;
7004 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
7005 gdb_assert (len
<= oldlen
);
7008 do_cleanups (old_chain
);
7010 /* This goes through the topmost target again. */
7011 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
7013 if (res
== TARGET_XFER_OK
)
7014 return TARGET_XFER_OK
;
7017 /* No use trying further, we know some memory starting
7018 at MEMADDR isn't available. */
7020 return TARGET_XFER_UNAVAILABLE
;
7024 /* Don't try to read more than how much is available, in
7025 case the target implements the deprecated QTro packet to
7026 cater for older GDBs (the target's knowledge of read-only
7027 sections may be outdated by now). */
7028 len
= VEC_index (mem_range_s
, available
, 0)->length
;
7030 do_cleanups (old_chain
);
7034 return remote_read_bytes_1 (memaddr
, myaddr
, len
, xfered_len
);
7039 /* Sends a packet with content determined by the printf format string
7040 FORMAT and the remaining arguments, then gets the reply. Returns
7041 whether the packet was a success, a failure, or unknown. */
7043 static enum packet_result
remote_send_printf (const char *format
, ...)
7044 ATTRIBUTE_PRINTF (1, 2);
7046 static enum packet_result
7047 remote_send_printf (const char *format
, ...)
7049 struct remote_state
*rs
= get_remote_state ();
7050 int max_size
= get_remote_packet_size ();
7053 va_start (ap
, format
);
7056 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7057 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7059 if (putpkt (rs
->buf
) < 0)
7060 error (_("Communication problem with target."));
7063 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7065 return packet_check_result (rs
->buf
);
7069 restore_remote_timeout (void *p
)
7071 int value
= *(int *)p
;
7073 remote_timeout
= value
;
7076 /* Flash writing can take quite some time. We'll set
7077 effectively infinite timeout for flash operations.
7078 In future, we'll need to decide on a better approach. */
7079 static const int remote_flash_timeout
= 1000;
7082 remote_flash_erase (struct target_ops
*ops
,
7083 ULONGEST address
, LONGEST length
)
7085 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7086 int saved_remote_timeout
= remote_timeout
;
7087 enum packet_result ret
;
7088 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7089 &saved_remote_timeout
);
7091 remote_timeout
= remote_flash_timeout
;
7093 ret
= remote_send_printf ("vFlashErase:%s,%s",
7094 phex (address
, addr_size
),
7098 case PACKET_UNKNOWN
:
7099 error (_("Remote target does not support flash erase"));
7101 error (_("Error erasing flash with vFlashErase packet"));
7106 do_cleanups (back_to
);
7109 static enum target_xfer_status
7110 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
7111 ULONGEST length
, ULONGEST
*xfered_len
,
7112 const gdb_byte
*data
)
7114 int saved_remote_timeout
= remote_timeout
;
7115 enum target_xfer_status ret
;
7116 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7117 &saved_remote_timeout
);
7119 remote_timeout
= remote_flash_timeout
;
7120 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
7122 do_cleanups (back_to
);
7128 remote_flash_done (struct target_ops
*ops
)
7130 int saved_remote_timeout
= remote_timeout
;
7132 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7133 &saved_remote_timeout
);
7135 remote_timeout
= remote_flash_timeout
;
7136 ret
= remote_send_printf ("vFlashDone");
7137 do_cleanups (back_to
);
7141 case PACKET_UNKNOWN
:
7142 error (_("Remote target does not support vFlashDone"));
7144 error (_("Error finishing flash operation"));
7151 remote_files_info (struct target_ops
*ignore
)
7153 puts_filtered ("Debugging a target over a serial line.\n");
7156 /* Stuff for dealing with the packets which are part of this protocol.
7157 See comment at top of file for details. */
7159 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7160 error to higher layers. Called when a serial error is detected.
7161 The exception message is STRING, followed by a colon and a blank,
7162 the system error message for errno at function entry and final dot
7163 for output compatibility with throw_perror_with_name. */
7166 unpush_and_perror (const char *string
)
7168 int saved_errno
= errno
;
7170 remote_unpush_target ();
7171 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7172 safe_strerror (saved_errno
));
7175 /* Read a single character from the remote end. */
7178 readchar (int timeout
)
7181 struct remote_state
*rs
= get_remote_state ();
7183 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7188 switch ((enum serial_rc
) ch
)
7191 remote_unpush_target ();
7192 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7195 unpush_and_perror (_("Remote communication error. "
7196 "Target disconnected."));
7198 case SERIAL_TIMEOUT
:
7204 /* Wrapper for serial_write that closes the target and throws if
7208 remote_serial_write (const char *str
, int len
)
7210 struct remote_state
*rs
= get_remote_state ();
7212 if (serial_write (rs
->remote_desc
, str
, len
))
7214 unpush_and_perror (_("Remote communication error. "
7215 "Target disconnected."));
7219 /* Send the command in *BUF to the remote machine, and read the reply
7220 into *BUF. Report an error if we get an error reply. Resize
7221 *BUF using xrealloc if necessary to hold the result, and update
7225 remote_send (char **buf
,
7229 getpkt (buf
, sizeof_buf
, 0);
7231 if ((*buf
)[0] == 'E')
7232 error (_("Remote failure reply: %s"), *buf
);
7235 /* Return a pointer to an xmalloc'ed string representing an escaped
7236 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7237 etc. The caller is responsible for releasing the returned
7241 escape_buffer (const char *buf
, int n
)
7243 struct cleanup
*old_chain
;
7244 struct ui_file
*stb
;
7247 stb
= mem_fileopen ();
7248 old_chain
= make_cleanup_ui_file_delete (stb
);
7250 fputstrn_unfiltered (buf
, n
, '\\', stb
);
7251 str
= ui_file_xstrdup (stb
, NULL
);
7252 do_cleanups (old_chain
);
7256 /* Display a null-terminated packet on stdout, for debugging, using C
7260 print_packet (const char *buf
)
7262 puts_filtered ("\"");
7263 fputstr_filtered (buf
, '"', gdb_stdout
);
7264 puts_filtered ("\"");
7268 putpkt (const char *buf
)
7270 return putpkt_binary (buf
, strlen (buf
));
7273 /* Send a packet to the remote machine, with error checking. The data
7274 of the packet is in BUF. The string in BUF can be at most
7275 get_remote_packet_size () - 5 to account for the $, # and checksum,
7276 and for a possible /0 if we are debugging (remote_debug) and want
7277 to print the sent packet as a string. */
7280 putpkt_binary (const char *buf
, int cnt
)
7282 struct remote_state
*rs
= get_remote_state ();
7284 unsigned char csum
= 0;
7285 char *buf2
= alloca (cnt
+ 6);
7292 /* Catch cases like trying to read memory or listing threads while
7293 we're waiting for a stop reply. The remote server wouldn't be
7294 ready to handle this request, so we'd hang and timeout. We don't
7295 have to worry about this in synchronous mode, because in that
7296 case it's not possible to issue a command while the target is
7297 running. This is not a problem in non-stop mode, because in that
7298 case, the stub is always ready to process serial input. */
7299 if (!non_stop
&& target_is_async_p () && rs
->waiting_for_stop_reply
)
7301 error (_("Cannot execute this command while the target is running.\n"
7302 "Use the \"interrupt\" command to stop the target\n"
7303 "and then try again."));
7306 /* We're sending out a new packet. Make sure we don't look at a
7307 stale cached response. */
7308 rs
->cached_wait_status
= 0;
7310 /* Copy the packet into buffer BUF2, encapsulating it
7311 and giving it a checksum. */
7316 for (i
= 0; i
< cnt
; i
++)
7322 *p
++ = tohex ((csum
>> 4) & 0xf);
7323 *p
++ = tohex (csum
& 0xf);
7325 /* Send it over and over until we get a positive ack. */
7329 int started_error_output
= 0;
7333 struct cleanup
*old_chain
;
7337 str
= escape_buffer (buf2
, p
- buf2
);
7338 old_chain
= make_cleanup (xfree
, str
);
7339 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7340 gdb_flush (gdb_stdlog
);
7341 do_cleanups (old_chain
);
7343 remote_serial_write (buf2
, p
- buf2
);
7345 /* If this is a no acks version of the remote protocol, send the
7346 packet and move on. */
7350 /* Read until either a timeout occurs (-2) or '+' is read.
7351 Handle any notification that arrives in the mean time. */
7354 ch
= readchar (remote_timeout
);
7362 case SERIAL_TIMEOUT
:
7365 if (started_error_output
)
7367 putchar_unfiltered ('\n');
7368 started_error_output
= 0;
7377 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7381 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7383 case SERIAL_TIMEOUT
:
7387 break; /* Retransmit buffer. */
7391 fprintf_unfiltered (gdb_stdlog
,
7392 "Packet instead of Ack, ignoring it\n");
7393 /* It's probably an old response sent because an ACK
7394 was lost. Gobble up the packet and ack it so it
7395 doesn't get retransmitted when we resend this
7398 remote_serial_write ("+", 1);
7399 continue; /* Now, go look for +. */
7406 /* If we got a notification, handle it, and go back to looking
7408 /* We've found the start of a notification. Now
7409 collect the data. */
7410 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7415 struct cleanup
*old_chain
;
7418 str
= escape_buffer (rs
->buf
, val
);
7419 old_chain
= make_cleanup (xfree
, str
);
7420 fprintf_unfiltered (gdb_stdlog
,
7421 " Notification received: %s\n",
7423 do_cleanups (old_chain
);
7425 handle_notification (rs
->notif_state
, rs
->buf
);
7426 /* We're in sync now, rewait for the ack. */
7433 if (!started_error_output
)
7435 started_error_output
= 1;
7436 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7438 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7439 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7448 if (!started_error_output
)
7450 started_error_output
= 1;
7451 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7453 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7457 break; /* Here to retransmit. */
7461 /* This is wrong. If doing a long backtrace, the user should be
7462 able to get out next time we call QUIT, without anything as
7463 violent as interrupt_query. If we want to provide a way out of
7464 here without getting to the next QUIT, it should be based on
7465 hitting ^C twice as in remote_wait. */
7476 /* Come here after finding the start of a frame when we expected an
7477 ack. Do our best to discard the rest of this packet. */
7486 c
= readchar (remote_timeout
);
7489 case SERIAL_TIMEOUT
:
7490 /* Nothing we can do. */
7493 /* Discard the two bytes of checksum and stop. */
7494 c
= readchar (remote_timeout
);
7496 c
= readchar (remote_timeout
);
7499 case '*': /* Run length encoding. */
7500 /* Discard the repeat count. */
7501 c
= readchar (remote_timeout
);
7506 /* A regular character. */
7512 /* Come here after finding the start of the frame. Collect the rest
7513 into *BUF, verifying the checksum, length, and handling run-length
7514 compression. NUL terminate the buffer. If there is not enough room,
7515 expand *BUF using xrealloc.
7517 Returns -1 on error, number of characters in buffer (ignoring the
7518 trailing NULL) on success. (could be extended to return one of the
7519 SERIAL status indications). */
7522 read_frame (char **buf_p
,
7529 struct remote_state
*rs
= get_remote_state ();
7536 c
= readchar (remote_timeout
);
7539 case SERIAL_TIMEOUT
:
7541 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7545 fputs_filtered ("Saw new packet start in middle of old one\n",
7547 return -1; /* Start a new packet, count retries. */
7550 unsigned char pktcsum
;
7556 check_0
= readchar (remote_timeout
);
7558 check_1
= readchar (remote_timeout
);
7560 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7563 fputs_filtered ("Timeout in checksum, retrying\n",
7567 else if (check_0
< 0 || check_1
< 0)
7570 fputs_filtered ("Communication error in checksum\n",
7575 /* Don't recompute the checksum; with no ack packets we
7576 don't have any way to indicate a packet retransmission
7581 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7582 if (csum
== pktcsum
)
7587 struct cleanup
*old_chain
;
7590 str
= escape_buffer (buf
, bc
);
7591 old_chain
= make_cleanup (xfree
, str
);
7592 fprintf_unfiltered (gdb_stdlog
,
7593 "Bad checksum, sentsum=0x%x, "
7594 "csum=0x%x, buf=%s\n",
7595 pktcsum
, csum
, str
);
7596 do_cleanups (old_chain
);
7598 /* Number of characters in buffer ignoring trailing
7602 case '*': /* Run length encoding. */
7607 c
= readchar (remote_timeout
);
7609 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7611 /* The character before ``*'' is repeated. */
7613 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7615 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7617 /* Make some more room in the buffer. */
7618 *sizeof_buf
+= repeat
;
7619 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7623 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7629 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7633 if (bc
>= *sizeof_buf
- 1)
7635 /* Make some more room in the buffer. */
7637 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7648 /* Read a packet from the remote machine, with error checking, and
7649 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7650 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7651 rather than timing out; this is used (in synchronous mode) to wait
7652 for a target that is is executing user code to stop. */
7653 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7654 don't have to change all the calls to getpkt to deal with the
7655 return value, because at the moment I don't know what the right
7656 thing to do it for those. */
7664 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7668 /* Read a packet from the remote machine, with error checking, and
7669 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7670 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7671 rather than timing out; this is used (in synchronous mode) to wait
7672 for a target that is is executing user code to stop. If FOREVER ==
7673 0, this function is allowed to time out gracefully and return an
7674 indication of this to the caller. Otherwise return the number of
7675 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7676 enough reason to return to the caller. *IS_NOTIF is an output
7677 boolean that indicates whether *BUF holds a notification or not
7678 (a regular packet). */
7681 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7682 int expecting_notif
, int *is_notif
)
7684 struct remote_state
*rs
= get_remote_state ();
7690 /* We're reading a new response. Make sure we don't look at a
7691 previously cached response. */
7692 rs
->cached_wait_status
= 0;
7694 strcpy (*buf
, "timeout");
7697 timeout
= watchdog
> 0 ? watchdog
: -1;
7698 else if (expecting_notif
)
7699 timeout
= 0; /* There should already be a char in the buffer. If
7702 timeout
= remote_timeout
;
7706 /* Process any number of notifications, and then return when
7710 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7712 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7714 /* This can loop forever if the remote side sends us
7715 characters continuously, but if it pauses, we'll get
7716 SERIAL_TIMEOUT from readchar because of timeout. Then
7717 we'll count that as a retry.
7719 Note that even when forever is set, we will only wait
7720 forever prior to the start of a packet. After that, we
7721 expect characters to arrive at a brisk pace. They should
7722 show up within remote_timeout intervals. */
7724 c
= readchar (timeout
);
7725 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7727 if (c
== SERIAL_TIMEOUT
)
7729 if (expecting_notif
)
7730 return -1; /* Don't complain, it's normal to not get
7731 anything in this case. */
7733 if (forever
) /* Watchdog went off? Kill the target. */
7736 remote_unpush_target ();
7737 throw_error (TARGET_CLOSE_ERROR
,
7738 _("Watchdog timeout has expired. "
7739 "Target detached."));
7742 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7746 /* We've found the start of a packet or notification.
7747 Now collect the data. */
7748 val
= read_frame (buf
, sizeof_buf
);
7753 remote_serial_write ("-", 1);
7756 if (tries
> MAX_TRIES
)
7758 /* We have tried hard enough, and just can't receive the
7759 packet/notification. Give up. */
7760 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7762 /* Skip the ack char if we're in no-ack mode. */
7763 if (!rs
->noack_mode
)
7764 remote_serial_write ("+", 1);
7768 /* If we got an ordinary packet, return that to our caller. */
7773 struct cleanup
*old_chain
;
7776 str
= escape_buffer (*buf
, val
);
7777 old_chain
= make_cleanup (xfree
, str
);
7778 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7779 do_cleanups (old_chain
);
7782 /* Skip the ack char if we're in no-ack mode. */
7783 if (!rs
->noack_mode
)
7784 remote_serial_write ("+", 1);
7785 if (is_notif
!= NULL
)
7790 /* If we got a notification, handle it, and go back to looking
7794 gdb_assert (c
== '%');
7798 struct cleanup
*old_chain
;
7801 str
= escape_buffer (*buf
, val
);
7802 old_chain
= make_cleanup (xfree
, str
);
7803 fprintf_unfiltered (gdb_stdlog
,
7804 " Notification received: %s\n",
7806 do_cleanups (old_chain
);
7808 if (is_notif
!= NULL
)
7811 handle_notification (rs
->notif_state
, *buf
);
7813 /* Notifications require no acknowledgement. */
7815 if (expecting_notif
)
7822 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7824 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7828 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7831 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7837 remote_kill (struct target_ops
*ops
)
7840 /* Catch errors so the user can quit from gdb even when we
7841 aren't on speaking terms with the remote system. */
7846 CATCH (ex
, RETURN_MASK_ERROR
)
7848 if (ex
.error
== TARGET_CLOSE_ERROR
)
7850 /* If we got an (EOF) error that caused the target
7851 to go away, then we're done, that's what we wanted.
7852 "k" is susceptible to cause a premature EOF, given
7853 that the remote server isn't actually required to
7854 reply to "k", and it can happen that it doesn't
7855 even get to reply ACK to the "k". */
7859 /* Otherwise, something went wrong. We didn't actually kill
7860 the target. Just propagate the exception, and let the
7861 user or higher layers decide what to do. */
7862 throw_exception (ex
);
7866 /* We've killed the remote end, we get to mourn it. Since this is
7867 target remote, single-process, mourning the inferior also
7868 unpushes remote_ops. */
7869 target_mourn_inferior ();
7873 remote_vkill (int pid
, struct remote_state
*rs
)
7875 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
7878 /* Tell the remote target to detach. */
7879 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7881 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7883 switch (packet_ok (rs
->buf
,
7884 &remote_protocol_packets
[PACKET_vKill
]))
7890 case PACKET_UNKNOWN
:
7893 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7898 extended_remote_kill (struct target_ops
*ops
)
7901 int pid
= ptid_get_pid (inferior_ptid
);
7902 struct remote_state
*rs
= get_remote_state ();
7904 res
= remote_vkill (pid
, rs
);
7905 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7907 /* Don't try 'k' on a multi-process aware stub -- it has no way
7908 to specify the pid. */
7912 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7913 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7916 /* Don't wait for it to die. I'm not really sure it matters whether
7917 we do or not. For the existing stubs, kill is a noop. */
7923 error (_("Can't kill process"));
7925 target_mourn_inferior ();
7929 remote_mourn (struct target_ops
*ops
)
7931 remote_mourn_1 (ops
);
7934 /* Worker function for remote_mourn. */
7936 remote_mourn_1 (struct target_ops
*target
)
7938 unpush_target (target
);
7940 /* remote_close takes care of doing most of the clean up. */
7941 generic_mourn_inferior ();
7945 extended_remote_mourn_1 (struct target_ops
*target
)
7947 struct remote_state
*rs
= get_remote_state ();
7949 /* In case we got here due to an error, but we're going to stay
7951 rs
->waiting_for_stop_reply
= 0;
7953 /* If the current general thread belonged to the process we just
7954 detached from or has exited, the remote side current general
7955 thread becomes undefined. Considering a case like this:
7957 - We just got here due to a detach.
7958 - The process that we're detaching from happens to immediately
7959 report a global breakpoint being hit in non-stop mode, in the
7960 same thread we had selected before.
7961 - GDB attaches to this process again.
7962 - This event happens to be the next event we handle.
7964 GDB would consider that the current general thread didn't need to
7965 be set on the stub side (with Hg), since for all it knew,
7966 GENERAL_THREAD hadn't changed.
7968 Notice that although in all-stop mode, the remote server always
7969 sets the current thread to the thread reporting the stop event,
7970 that doesn't happen in non-stop mode; in non-stop, the stub *must
7971 not* change the current thread when reporting a breakpoint hit,
7972 due to the decoupling of event reporting and event handling.
7974 To keep things simple, we always invalidate our notion of the
7976 record_currthread (rs
, minus_one_ptid
);
7978 /* Unlike "target remote", we do not want to unpush the target; then
7979 the next time the user says "run", we won't be connected. */
7981 /* Call common code to mark the inferior as not running. */
7982 generic_mourn_inferior ();
7984 if (!have_inferiors ())
7986 if (!remote_multi_process_p (rs
))
7988 /* Check whether the target is running now - some remote stubs
7989 automatically restart after kill. */
7991 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7993 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7995 /* Assume that the target has been restarted. Set
7996 inferior_ptid so that bits of core GDB realizes
7997 there's something here, e.g., so that the user can
7998 say "kill" again. */
7999 inferior_ptid
= magic_null_ptid
;
8006 extended_remote_mourn (struct target_ops
*ops
)
8008 extended_remote_mourn_1 (ops
);
8012 extended_remote_supports_disable_randomization (struct target_ops
*self
)
8014 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
8018 extended_remote_disable_randomization (int val
)
8020 struct remote_state
*rs
= get_remote_state ();
8023 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
8026 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
8028 error (_("Target does not support QDisableRandomization."));
8029 if (strcmp (reply
, "OK") != 0)
8030 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
8034 extended_remote_run (char *args
)
8036 struct remote_state
*rs
= get_remote_state ();
8039 /* If the user has disabled vRun support, or we have detected that
8040 support is not available, do not try it. */
8041 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
8044 strcpy (rs
->buf
, "vRun;");
8045 len
= strlen (rs
->buf
);
8047 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
8048 error (_("Remote file name too long for run packet"));
8049 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
8050 strlen (remote_exec_file
));
8052 gdb_assert (args
!= NULL
);
8055 struct cleanup
*back_to
;
8059 argv
= gdb_buildargv (args
);
8060 back_to
= make_cleanup_freeargv (argv
);
8061 for (i
= 0; argv
[i
] != NULL
; i
++)
8063 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8064 error (_("Argument list too long for run packet"));
8065 rs
->buf
[len
++] = ';';
8066 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
8069 do_cleanups (back_to
);
8072 rs
->buf
[len
++] = '\0';
8075 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8077 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
8080 /* We have a wait response. All is well. */
8082 case PACKET_UNKNOWN
:
8085 if (remote_exec_file
[0] == '\0')
8086 error (_("Running the default executable on the remote target failed; "
8087 "try \"set remote exec-file\"?"));
8089 error (_("Running \"%s\" on the remote target failed"),
8092 gdb_assert_not_reached (_("bad switch"));
8096 /* In the extended protocol we want to be able to do things like
8097 "run" and have them basically work as expected. So we need
8098 a special create_inferior function. We support changing the
8099 executable file and the command line arguments, but not the
8103 extended_remote_create_inferior (struct target_ops
*ops
,
8104 char *exec_file
, char *args
,
8105 char **env
, int from_tty
)
8109 struct remote_state
*rs
= get_remote_state ();
8111 /* If running asynchronously, register the target file descriptor
8112 with the event loop. */
8113 if (target_can_async_p ())
8114 target_async (inferior_event_handler
, 0);
8116 /* Disable address space randomization if requested (and supported). */
8117 if (extended_remote_supports_disable_randomization (ops
))
8118 extended_remote_disable_randomization (disable_randomization
);
8120 /* Now restart the remote server. */
8121 run_worked
= extended_remote_run (args
) != -1;
8124 /* vRun was not supported. Fail if we need it to do what the
8126 if (remote_exec_file
[0])
8127 error (_("Remote target does not support \"set remote exec-file\""));
8129 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8131 /* Fall back to "R". */
8132 extended_remote_restart ();
8135 if (!have_inferiors ())
8137 /* Clean up from the last time we ran, before we mark the target
8138 running again. This will mark breakpoints uninserted, and
8139 get_offsets may insert breakpoints. */
8140 init_thread_list ();
8141 init_wait_for_inferior ();
8144 /* vRun's success return is a stop reply. */
8145 stop_reply
= run_worked
? rs
->buf
: NULL
;
8146 add_current_inferior_and_thread (stop_reply
);
8148 /* Get updated offsets, if the stub uses qOffsets. */
8153 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8154 the list of conditions (in agent expression bytecode format), if any, the
8155 target needs to evaluate. The output is placed into the packet buffer
8156 started from BUF and ended at BUF_END. */
8159 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8160 struct bp_target_info
*bp_tgt
, char *buf
,
8163 struct agent_expr
*aexpr
= NULL
;
8166 char *buf_start
= buf
;
8168 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8171 buf
+= strlen (buf
);
8172 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8175 /* Send conditions to the target and free the vector. */
8177 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8180 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8181 buf
+= strlen (buf
);
8182 for (i
= 0; i
< aexpr
->len
; ++i
)
8183 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8190 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8191 struct bp_target_info
*bp_tgt
, char *buf
)
8193 struct agent_expr
*aexpr
= NULL
;
8196 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8199 buf
+= strlen (buf
);
8201 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8202 buf
+= strlen (buf
);
8204 /* Concatenate all the agent expressions that are commands into the
8207 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8210 sprintf (buf
, "X%x,", aexpr
->len
);
8211 buf
+= strlen (buf
);
8212 for (i
= 0; i
< aexpr
->len
; ++i
)
8213 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8218 /* Insert a breakpoint. On targets that have software breakpoint
8219 support, we ask the remote target to do the work; on targets
8220 which don't, we insert a traditional memory breakpoint. */
8223 remote_insert_breakpoint (struct target_ops
*ops
,
8224 struct gdbarch
*gdbarch
,
8225 struct bp_target_info
*bp_tgt
)
8227 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8228 If it succeeds, then set the support to PACKET_ENABLE. If it
8229 fails, and the user has explicitly requested the Z support then
8230 report an error, otherwise, mark it disabled and go on. */
8232 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8234 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
8235 struct remote_state
*rs
;
8238 struct condition_list
*cond
= NULL
;
8240 /* Make sure the remote is pointing at the right process, if
8242 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8243 set_general_process ();
8245 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8247 rs
= get_remote_state ();
8249 endbuf
= rs
->buf
+ get_remote_packet_size ();
8254 addr
= (ULONGEST
) remote_address_masked (addr
);
8255 p
+= hexnumstr (p
, addr
);
8256 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8258 if (remote_supports_cond_breakpoints (ops
))
8259 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8261 if (remote_can_run_breakpoint_commands (ops
))
8262 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8265 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8267 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8272 bp_tgt
->placed_address
= addr
;
8273 bp_tgt
->placed_size
= bpsize
;
8275 case PACKET_UNKNOWN
:
8280 /* If this breakpoint has target-side commands but this stub doesn't
8281 support Z0 packets, throw error. */
8282 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8283 throw_error (NOT_SUPPORTED_ERROR
, _("\
8284 Target doesn't support breakpoints that have target side commands."));
8286 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8290 remote_remove_breakpoint (struct target_ops
*ops
,
8291 struct gdbarch
*gdbarch
,
8292 struct bp_target_info
*bp_tgt
)
8294 CORE_ADDR addr
= bp_tgt
->placed_address
;
8295 struct remote_state
*rs
= get_remote_state ();
8297 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8300 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8302 /* Make sure the remote is pointing at the right process, if
8304 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8305 set_general_process ();
8311 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8312 p
+= hexnumstr (p
, addr
);
8313 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8316 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8318 return (rs
->buf
[0] == 'E');
8321 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8325 watchpoint_to_Z_packet (int type
)
8330 return Z_PACKET_WRITE_WP
;
8333 return Z_PACKET_READ_WP
;
8336 return Z_PACKET_ACCESS_WP
;
8339 internal_error (__FILE__
, __LINE__
,
8340 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8345 remote_insert_watchpoint (struct target_ops
*self
,
8346 CORE_ADDR addr
, int len
, int type
,
8347 struct expression
*cond
)
8349 struct remote_state
*rs
= get_remote_state ();
8350 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8352 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8354 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8357 /* Make sure the remote is pointing at the right process, if
8359 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8360 set_general_process ();
8362 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8363 p
= strchr (rs
->buf
, '\0');
8364 addr
= remote_address_masked (addr
);
8365 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8366 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8369 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8371 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8375 case PACKET_UNKNOWN
:
8380 internal_error (__FILE__
, __LINE__
,
8381 _("remote_insert_watchpoint: reached end of function"));
8385 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8386 CORE_ADDR start
, int length
)
8388 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8390 return diff
< length
;
8395 remote_remove_watchpoint (struct target_ops
*self
,
8396 CORE_ADDR addr
, int len
, int type
,
8397 struct expression
*cond
)
8399 struct remote_state
*rs
= get_remote_state ();
8400 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8402 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8404 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8407 /* Make sure the remote is pointing at the right process, if
8409 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8410 set_general_process ();
8412 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8413 p
= strchr (rs
->buf
, '\0');
8414 addr
= remote_address_masked (addr
);
8415 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8416 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8418 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8420 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8423 case PACKET_UNKNOWN
:
8428 internal_error (__FILE__
, __LINE__
,
8429 _("remote_remove_watchpoint: reached end of function"));
8433 int remote_hw_watchpoint_limit
= -1;
8434 int remote_hw_watchpoint_length_limit
= -1;
8435 int remote_hw_breakpoint_limit
= -1;
8438 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8439 CORE_ADDR addr
, int len
)
8441 if (remote_hw_watchpoint_length_limit
== 0)
8443 else if (remote_hw_watchpoint_length_limit
< 0)
8445 else if (len
<= remote_hw_watchpoint_length_limit
)
8452 remote_check_watch_resources (struct target_ops
*self
,
8453 int type
, int cnt
, int ot
)
8455 if (type
== bp_hardware_breakpoint
)
8457 if (remote_hw_breakpoint_limit
== 0)
8459 else if (remote_hw_breakpoint_limit
< 0)
8461 else if (cnt
<= remote_hw_breakpoint_limit
)
8466 if (remote_hw_watchpoint_limit
== 0)
8468 else if (remote_hw_watchpoint_limit
< 0)
8472 else if (cnt
<= remote_hw_watchpoint_limit
)
8478 /* The to_stopped_by_sw_breakpoint method of target remote. */
8481 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
8483 struct remote_state
*rs
= get_remote_state ();
8485 return rs
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
;
8488 /* The to_supports_stopped_by_sw_breakpoint method of target
8492 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
8494 struct remote_state
*rs
= get_remote_state ();
8496 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
8499 /* The to_stopped_by_hw_breakpoint method of target remote. */
8502 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
8504 struct remote_state
*rs
= get_remote_state ();
8506 return rs
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
;
8509 /* The to_supports_stopped_by_hw_breakpoint method of target
8513 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
8515 struct remote_state
*rs
= get_remote_state ();
8517 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
8521 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8523 struct remote_state
*rs
= get_remote_state ();
8525 return rs
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
;
8529 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8531 struct remote_state
*rs
= get_remote_state ();
8534 if (remote_stopped_by_watchpoint (target
))
8536 *addr_p
= rs
->remote_watch_data_address
;
8545 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8546 struct bp_target_info
*bp_tgt
)
8548 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
8549 struct remote_state
*rs
;
8554 /* The length field should be set to the size of a breakpoint
8555 instruction, even though we aren't inserting one ourselves. */
8557 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8559 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8562 /* Make sure the remote is pointing at the right process, if
8564 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8565 set_general_process ();
8567 rs
= get_remote_state ();
8569 endbuf
= rs
->buf
+ get_remote_packet_size ();
8575 addr
= remote_address_masked (addr
);
8576 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8577 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
8579 if (remote_supports_cond_breakpoints (self
))
8580 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8582 if (remote_can_run_breakpoint_commands (self
))
8583 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8586 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8588 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8591 if (rs
->buf
[1] == '.')
8593 message
= strchr (rs
->buf
+ 2, '.');
8595 error (_("Remote failure reply: %s"), message
+ 1);
8598 case PACKET_UNKNOWN
:
8601 bp_tgt
->placed_address
= addr
;
8602 bp_tgt
->placed_size
= bpsize
;
8605 internal_error (__FILE__
, __LINE__
,
8606 _("remote_insert_hw_breakpoint: reached end of function"));
8611 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8612 struct bp_target_info
*bp_tgt
)
8615 struct remote_state
*rs
= get_remote_state ();
8617 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8619 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8622 /* Make sure the remote is pointing at the right process, if
8624 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8625 set_general_process ();
8631 addr
= remote_address_masked (bp_tgt
->placed_address
);
8632 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8633 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8638 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8641 case PACKET_UNKNOWN
:
8646 internal_error (__FILE__
, __LINE__
,
8647 _("remote_remove_hw_breakpoint: reached end of function"));
8650 /* Verify memory using the "qCRC:" request. */
8653 remote_verify_memory (struct target_ops
*ops
,
8654 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8656 struct remote_state
*rs
= get_remote_state ();
8657 unsigned long host_crc
, target_crc
;
8660 /* It doesn't make sense to use qCRC if the remote target is
8661 connected but not running. */
8662 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
8664 enum packet_result result
;
8666 /* Make sure the remote is pointing at the right process. */
8667 set_general_process ();
8669 /* FIXME: assumes lma can fit into long. */
8670 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8671 (long) lma
, (long) size
);
8674 /* Be clever; compute the host_crc before waiting for target
8676 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8678 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8680 result
= packet_ok (rs
->buf
,
8681 &remote_protocol_packets
[PACKET_qCRC
]);
8682 if (result
== PACKET_ERROR
)
8684 else if (result
== PACKET_OK
)
8686 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8687 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8689 return (host_crc
== target_crc
);
8693 return simple_verify_memory (ops
, data
, lma
, size
);
8696 /* compare-sections command
8698 With no arguments, compares each loadable section in the exec bfd
8699 with the same memory range on the target, and reports mismatches.
8700 Useful for verifying the image on the target against the exec file. */
8703 compare_sections_command (char *args
, int from_tty
)
8706 struct cleanup
*old_chain
;
8708 const char *sectname
;
8717 error (_("command cannot be used without an exec file"));
8719 /* Make sure the remote is pointing at the right process. */
8720 set_general_process ();
8722 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
8728 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8730 if (!(s
->flags
& SEC_LOAD
))
8731 continue; /* Skip non-loadable section. */
8733 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
8734 continue; /* Skip writeable sections */
8736 size
= bfd_get_section_size (s
);
8738 continue; /* Skip zero-length section. */
8740 sectname
= bfd_get_section_name (exec_bfd
, s
);
8741 if (args
&& strcmp (args
, sectname
) != 0)
8742 continue; /* Not the section selected by user. */
8744 matched
= 1; /* Do this section. */
8747 sectdata
= xmalloc (size
);
8748 old_chain
= make_cleanup (xfree
, sectdata
);
8749 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8751 res
= target_verify_memory (sectdata
, lma
, size
);
8754 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8755 paddress (target_gdbarch (), lma
),
8756 paddress (target_gdbarch (), lma
+ size
));
8758 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8759 paddress (target_gdbarch (), lma
),
8760 paddress (target_gdbarch (), lma
+ size
));
8762 printf_filtered ("matched.\n");
8765 printf_filtered ("MIS-MATCHED!\n");
8769 do_cleanups (old_chain
);
8772 warning (_("One or more sections of the target image does not match\n\
8773 the loaded file\n"));
8774 if (args
&& !matched
)
8775 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8778 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8779 into remote target. The number of bytes written to the remote
8780 target is returned, or -1 for error. */
8782 static enum target_xfer_status
8783 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8784 const char *annex
, const gdb_byte
*writebuf
,
8785 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8786 struct packet_config
*packet
)
8790 struct remote_state
*rs
= get_remote_state ();
8791 int max_size
= get_memory_write_packet_size ();
8793 if (packet
->support
== PACKET_DISABLE
)
8794 return TARGET_XFER_E_IO
;
8796 /* Insert header. */
8797 i
= snprintf (rs
->buf
, max_size
,
8798 "qXfer:%s:write:%s:%s:",
8799 object_name
, annex
? annex
: "",
8800 phex_nz (offset
, sizeof offset
));
8801 max_size
-= (i
+ 1);
8803 /* Escape as much data as fits into rs->buf. */
8804 buf_len
= remote_escape_output
8805 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8807 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8808 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8809 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8810 return TARGET_XFER_E_IO
;
8812 unpack_varlen_hex (rs
->buf
, &n
);
8815 return TARGET_XFER_OK
;
8818 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8819 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8820 number of bytes read is returned, or 0 for EOF, or -1 for error.
8821 The number of bytes read may be less than LEN without indicating an
8822 EOF. PACKET is checked and updated to indicate whether the remote
8823 target supports this object. */
8825 static enum target_xfer_status
8826 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8828 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8829 ULONGEST
*xfered_len
,
8830 struct packet_config
*packet
)
8832 struct remote_state
*rs
= get_remote_state ();
8833 LONGEST i
, n
, packet_len
;
8835 if (packet
->support
== PACKET_DISABLE
)
8836 return TARGET_XFER_E_IO
;
8838 /* Check whether we've cached an end-of-object packet that matches
8840 if (rs
->finished_object
)
8842 if (strcmp (object_name
, rs
->finished_object
) == 0
8843 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8844 && offset
== rs
->finished_offset
)
8845 return TARGET_XFER_EOF
;
8848 /* Otherwise, we're now reading something different. Discard
8850 xfree (rs
->finished_object
);
8851 xfree (rs
->finished_annex
);
8852 rs
->finished_object
= NULL
;
8853 rs
->finished_annex
= NULL
;
8856 /* Request only enough to fit in a single packet. The actual data
8857 may not, since we don't know how much of it will need to be escaped;
8858 the target is free to respond with slightly less data. We subtract
8859 five to account for the response type and the protocol frame. */
8860 n
= min (get_remote_packet_size () - 5, len
);
8861 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8862 object_name
, annex
? annex
: "",
8863 phex_nz (offset
, sizeof offset
),
8864 phex_nz (n
, sizeof n
));
8865 i
= putpkt (rs
->buf
);
8867 return TARGET_XFER_E_IO
;
8870 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8871 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8872 return TARGET_XFER_E_IO
;
8874 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8875 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8877 /* 'm' means there is (or at least might be) more data after this
8878 batch. That does not make sense unless there's at least one byte
8879 of data in this reply. */
8880 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8881 error (_("Remote qXfer reply contained no data."));
8883 /* Got some data. */
8884 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8885 packet_len
- 1, readbuf
, n
);
8887 /* 'l' is an EOF marker, possibly including a final block of data,
8888 or possibly empty. If we have the final block of a non-empty
8889 object, record this fact to bypass a subsequent partial read. */
8890 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8892 rs
->finished_object
= xstrdup (object_name
);
8893 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8894 rs
->finished_offset
= offset
+ i
;
8898 return TARGET_XFER_EOF
;
8902 return TARGET_XFER_OK
;
8906 static enum target_xfer_status
8907 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8908 const char *annex
, gdb_byte
*readbuf
,
8909 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8910 ULONGEST
*xfered_len
)
8912 struct remote_state
*rs
;
8917 set_remote_traceframe ();
8918 set_general_thread (inferior_ptid
);
8920 rs
= get_remote_state ();
8922 /* Handle memory using the standard memory routines. */
8923 if (object
== TARGET_OBJECT_MEMORY
)
8925 /* If the remote target is connected but not running, we should
8926 pass this request down to a lower stratum (e.g. the executable
8928 if (!target_has_execution
)
8929 return TARGET_XFER_EOF
;
8931 if (writebuf
!= NULL
)
8932 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8934 return remote_read_bytes (ops
, offset
, readbuf
, len
, xfered_len
);
8937 /* Handle SPU memory using qxfer packets. */
8938 if (object
== TARGET_OBJECT_SPU
)
8941 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8942 xfered_len
, &remote_protocol_packets
8943 [PACKET_qXfer_spu_read
]);
8945 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8946 xfered_len
, &remote_protocol_packets
8947 [PACKET_qXfer_spu_write
]);
8950 /* Handle extra signal info using qxfer packets. */
8951 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8954 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8955 xfered_len
, &remote_protocol_packets
8956 [PACKET_qXfer_siginfo_read
]);
8958 return remote_write_qxfer (ops
, "siginfo", annex
,
8959 writebuf
, offset
, len
, xfered_len
,
8960 &remote_protocol_packets
8961 [PACKET_qXfer_siginfo_write
]);
8964 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8967 return remote_read_qxfer (ops
, "statictrace", annex
,
8968 readbuf
, offset
, len
, xfered_len
,
8969 &remote_protocol_packets
8970 [PACKET_qXfer_statictrace_read
]);
8972 return TARGET_XFER_E_IO
;
8975 /* Only handle flash writes. */
8976 if (writebuf
!= NULL
)
8982 case TARGET_OBJECT_FLASH
:
8983 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8987 return TARGET_XFER_E_IO
;
8991 /* Map pre-existing objects onto letters. DO NOT do this for new
8992 objects!!! Instead specify new query packets. */
8995 case TARGET_OBJECT_AVR
:
8999 case TARGET_OBJECT_AUXV
:
9000 gdb_assert (annex
== NULL
);
9001 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
9003 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
9005 case TARGET_OBJECT_AVAILABLE_FEATURES
:
9006 return remote_read_qxfer
9007 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
9008 &remote_protocol_packets
[PACKET_qXfer_features
]);
9010 case TARGET_OBJECT_LIBRARIES
:
9011 return remote_read_qxfer
9012 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
9013 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
9015 case TARGET_OBJECT_LIBRARIES_SVR4
:
9016 return remote_read_qxfer
9017 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
9018 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
9020 case TARGET_OBJECT_MEMORY_MAP
:
9021 gdb_assert (annex
== NULL
);
9022 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
9024 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
9026 case TARGET_OBJECT_OSDATA
:
9027 /* Should only get here if we're connected. */
9028 gdb_assert (rs
->remote_desc
);
9029 return remote_read_qxfer
9030 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
9031 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
9033 case TARGET_OBJECT_THREADS
:
9034 gdb_assert (annex
== NULL
);
9035 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
9037 &remote_protocol_packets
[PACKET_qXfer_threads
]);
9039 case TARGET_OBJECT_TRACEFRAME_INFO
:
9040 gdb_assert (annex
== NULL
);
9041 return remote_read_qxfer
9042 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
9043 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
9045 case TARGET_OBJECT_FDPIC
:
9046 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
9048 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
9050 case TARGET_OBJECT_OPENVMS_UIB
:
9051 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
9053 &remote_protocol_packets
[PACKET_qXfer_uib
]);
9055 case TARGET_OBJECT_BTRACE
:
9056 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
9058 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
9060 case TARGET_OBJECT_BTRACE_CONF
:
9061 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
9063 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
9066 return TARGET_XFER_E_IO
;
9069 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
9070 large enough let the caller deal with it. */
9071 if (len
< get_remote_packet_size ())
9072 return TARGET_XFER_E_IO
;
9073 len
= get_remote_packet_size ();
9075 /* Except for querying the minimum buffer size, target must be open. */
9076 if (!rs
->remote_desc
)
9077 error (_("remote query is only available after target open"));
9079 gdb_assert (annex
!= NULL
);
9080 gdb_assert (readbuf
!= NULL
);
9086 /* We used one buffer char for the remote protocol q command and
9087 another for the query type. As the remote protocol encapsulation
9088 uses 4 chars plus one extra in case we are debugging
9089 (remote_debug), we have PBUFZIZ - 7 left to pack the query
9092 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
9094 /* Bad caller may have sent forbidden characters. */
9095 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
9100 gdb_assert (annex
[i
] == '\0');
9102 i
= putpkt (rs
->buf
);
9104 return TARGET_XFER_E_IO
;
9106 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9107 strcpy ((char *) readbuf
, rs
->buf
);
9109 *xfered_len
= strlen ((char *) readbuf
);
9110 return TARGET_XFER_OK
;
9114 remote_search_memory (struct target_ops
* ops
,
9115 CORE_ADDR start_addr
, ULONGEST search_space_len
,
9116 const gdb_byte
*pattern
, ULONGEST pattern_len
,
9117 CORE_ADDR
*found_addrp
)
9119 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
9120 struct remote_state
*rs
= get_remote_state ();
9121 int max_size
= get_memory_write_packet_size ();
9122 struct packet_config
*packet
=
9123 &remote_protocol_packets
[PACKET_qSearch_memory
];
9124 /* Number of packet bytes used to encode the pattern;
9125 this could be more than PATTERN_LEN due to escape characters. */
9126 int escaped_pattern_len
;
9127 /* Amount of pattern that was encodable in the packet. */
9128 int used_pattern_len
;
9131 ULONGEST found_addr
;
9133 /* Don't go to the target if we don't have to.
9134 This is done before checking packet->support to avoid the possibility that
9135 a success for this edge case means the facility works in general. */
9136 if (pattern_len
> search_space_len
)
9138 if (pattern_len
== 0)
9140 *found_addrp
= start_addr
;
9144 /* If we already know the packet isn't supported, fall back to the simple
9145 way of searching memory. */
9147 if (packet_config_support (packet
) == PACKET_DISABLE
)
9149 /* Target doesn't provided special support, fall back and use the
9150 standard support (copy memory and do the search here). */
9151 return simple_search_memory (ops
, start_addr
, search_space_len
,
9152 pattern
, pattern_len
, found_addrp
);
9155 /* Make sure the remote is pointing at the right process. */
9156 set_general_process ();
9158 /* Insert header. */
9159 i
= snprintf (rs
->buf
, max_size
,
9160 "qSearch:memory:%s;%s;",
9161 phex_nz (start_addr
, addr_size
),
9162 phex_nz (search_space_len
, sizeof (search_space_len
)));
9163 max_size
-= (i
+ 1);
9165 /* Escape as much data as fits into rs->buf. */
9166 escaped_pattern_len
=
9167 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9168 &used_pattern_len
, max_size
);
9170 /* Bail if the pattern is too large. */
9171 if (used_pattern_len
!= pattern_len
)
9172 error (_("Pattern is too large to transmit to remote target."));
9174 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9175 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9176 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9178 /* The request may not have worked because the command is not
9179 supported. If so, fall back to the simple way. */
9180 if (packet
->support
== PACKET_DISABLE
)
9182 return simple_search_memory (ops
, start_addr
, search_space_len
,
9183 pattern
, pattern_len
, found_addrp
);
9188 if (rs
->buf
[0] == '0')
9190 else if (rs
->buf
[0] == '1')
9193 if (rs
->buf
[1] != ',')
9194 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9195 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9196 *found_addrp
= found_addr
;
9199 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9205 remote_rcmd (struct target_ops
*self
, const char *command
,
9206 struct ui_file
*outbuf
)
9208 struct remote_state
*rs
= get_remote_state ();
9211 if (!rs
->remote_desc
)
9212 error (_("remote rcmd is only available after target open"));
9214 /* Send a NULL command across as an empty command. */
9215 if (command
== NULL
)
9218 /* The query prefix. */
9219 strcpy (rs
->buf
, "qRcmd,");
9220 p
= strchr (rs
->buf
, '\0');
9222 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9223 > get_remote_packet_size ())
9224 error (_("\"monitor\" command ``%s'' is too long."), command
);
9226 /* Encode the actual command. */
9227 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
9229 if (putpkt (rs
->buf
) < 0)
9230 error (_("Communication problem with target."));
9232 /* get/display the response */
9237 /* XXX - see also remote_get_noisy_reply(). */
9238 QUIT
; /* Allow user to bail out with ^C. */
9240 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9242 /* Timeout. Continue to (try to) read responses.
9243 This is better than stopping with an error, assuming the stub
9244 is still executing the (long) monitor command.
9245 If needed, the user can interrupt gdb using C-c, obtaining
9246 an effect similar to stop on timeout. */
9251 error (_("Target does not support this command."));
9252 if (buf
[0] == 'O' && buf
[1] != 'K')
9254 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9257 if (strcmp (buf
, "OK") == 0)
9259 if (strlen (buf
) == 3 && buf
[0] == 'E'
9260 && isdigit (buf
[1]) && isdigit (buf
[2]))
9262 error (_("Protocol error with Rcmd"));
9264 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9266 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9268 fputc_unfiltered (c
, outbuf
);
9274 static VEC(mem_region_s
) *
9275 remote_memory_map (struct target_ops
*ops
)
9277 VEC(mem_region_s
) *result
= NULL
;
9278 char *text
= target_read_stralloc (¤t_target
,
9279 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9283 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9285 result
= parse_memory_map (text
);
9286 do_cleanups (back_to
);
9293 packet_command (char *args
, int from_tty
)
9295 struct remote_state
*rs
= get_remote_state ();
9297 if (!rs
->remote_desc
)
9298 error (_("command can only be used with remote target"));
9301 error (_("remote-packet command requires packet text as argument"));
9303 puts_filtered ("sending: ");
9304 print_packet (args
);
9305 puts_filtered ("\n");
9308 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9309 puts_filtered ("received: ");
9310 print_packet (rs
->buf
);
9311 puts_filtered ("\n");
9315 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9317 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9319 static void threadset_test_cmd (char *cmd
, int tty
);
9321 static void threadalive_test (char *cmd
, int tty
);
9323 static void threadlist_test_cmd (char *cmd
, int tty
);
9325 int get_and_display_threadinfo (threadref
*ref
);
9327 static void threadinfo_test_cmd (char *cmd
, int tty
);
9329 static int thread_display_step (threadref
*ref
, void *context
);
9331 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9333 static void init_remote_threadtests (void);
9335 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9338 threadset_test_cmd (char *cmd
, int tty
)
9340 int sample_thread
= SAMPLE_THREAD
;
9342 printf_filtered (_("Remote threadset test\n"));
9343 set_general_thread (sample_thread
);
9348 threadalive_test (char *cmd
, int tty
)
9350 int sample_thread
= SAMPLE_THREAD
;
9351 int pid
= ptid_get_pid (inferior_ptid
);
9352 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
9354 if (remote_thread_alive (ptid
))
9355 printf_filtered ("PASS: Thread alive test\n");
9357 printf_filtered ("FAIL: Thread alive test\n");
9360 void output_threadid (char *title
, threadref
*ref
);
9363 output_threadid (char *title
, threadref
*ref
)
9367 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9369 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9373 threadlist_test_cmd (char *cmd
, int tty
)
9376 threadref nextthread
;
9377 int done
, result_count
;
9378 threadref threadlist
[3];
9380 printf_filtered ("Remote Threadlist test\n");
9381 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9382 &result_count
, &threadlist
[0]))
9383 printf_filtered ("FAIL: threadlist test\n");
9386 threadref
*scan
= threadlist
;
9387 threadref
*limit
= scan
+ result_count
;
9389 while (scan
< limit
)
9390 output_threadid (" thread ", scan
++);
9395 display_thread_info (struct gdb_ext_thread_info
*info
)
9397 output_threadid ("Threadid: ", &info
->threadid
);
9398 printf_filtered ("Name: %s\n ", info
->shortname
);
9399 printf_filtered ("State: %s\n", info
->display
);
9400 printf_filtered ("other: %s\n\n", info
->more_display
);
9404 get_and_display_threadinfo (threadref
*ref
)
9408 struct gdb_ext_thread_info threadinfo
;
9410 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9411 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9412 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9413 display_thread_info (&threadinfo
);
9418 threadinfo_test_cmd (char *cmd
, int tty
)
9420 int athread
= SAMPLE_THREAD
;
9424 int_to_threadref (&thread
, athread
);
9425 printf_filtered ("Remote Threadinfo test\n");
9426 if (!get_and_display_threadinfo (&thread
))
9427 printf_filtered ("FAIL cannot get thread info\n");
9431 thread_display_step (threadref
*ref
, void *context
)
9433 /* output_threadid(" threadstep ",ref); *//* simple test */
9434 return get_and_display_threadinfo (ref
);
9438 threadlist_update_test_cmd (char *cmd
, int tty
)
9440 printf_filtered ("Remote Threadlist update test\n");
9441 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9445 init_remote_threadtests (void)
9447 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9448 _("Fetch and print the remote list of "
9449 "thread identifiers, one pkt only"));
9450 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9451 _("Fetch and display info about one thread"));
9452 add_com ("tset", class_obscure
, threadset_test_cmd
,
9453 _("Test setting to a different thread"));
9454 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9455 _("Iterate through updating all remote thread info"));
9456 add_com ("talive", class_obscure
, threadalive_test
,
9457 _(" Remote thread alive test "));
9462 /* Convert a thread ID to a string. Returns the string in a static
9466 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9468 static char buf
[64];
9469 struct remote_state
*rs
= get_remote_state ();
9471 if (ptid_equal (ptid
, null_ptid
))
9472 return normal_pid_to_str (ptid
);
9473 else if (ptid_is_pid (ptid
))
9475 /* Printing an inferior target id. */
9477 /* When multi-process extensions are off, there's no way in the
9478 remote protocol to know the remote process id, if there's any
9479 at all. There's one exception --- when we're connected with
9480 target extended-remote, and we manually attached to a process
9481 with "attach PID". We don't record anywhere a flag that
9482 allows us to distinguish that case from the case of
9483 connecting with extended-remote and the stub already being
9484 attached to a process, and reporting yes to qAttached, hence
9485 no smart special casing here. */
9486 if (!remote_multi_process_p (rs
))
9488 xsnprintf (buf
, sizeof buf
, "Remote target");
9492 return normal_pid_to_str (ptid
);
9496 if (ptid_equal (magic_null_ptid
, ptid
))
9497 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9498 else if (rs
->extended
&& remote_multi_process_p (rs
))
9499 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9500 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
9502 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9503 ptid_get_lwp (ptid
));
9508 /* Get the address of the thread local variable in OBJFILE which is
9509 stored at OFFSET within the thread local storage for thread PTID. */
9512 remote_get_thread_local_address (struct target_ops
*ops
,
9513 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9515 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
9517 struct remote_state
*rs
= get_remote_state ();
9519 char *endp
= rs
->buf
+ get_remote_packet_size ();
9520 enum packet_result result
;
9522 strcpy (p
, "qGetTLSAddr:");
9524 p
= write_ptid (p
, endp
, ptid
);
9526 p
+= hexnumstr (p
, offset
);
9528 p
+= hexnumstr (p
, lm
);
9532 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9533 result
= packet_ok (rs
->buf
,
9534 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9535 if (result
== PACKET_OK
)
9539 unpack_varlen_hex (rs
->buf
, &result
);
9542 else if (result
== PACKET_UNKNOWN
)
9543 throw_error (TLS_GENERIC_ERROR
,
9544 _("Remote target doesn't support qGetTLSAddr packet"));
9546 throw_error (TLS_GENERIC_ERROR
,
9547 _("Remote target failed to process qGetTLSAddr request"));
9550 throw_error (TLS_GENERIC_ERROR
,
9551 _("TLS not supported or disabled on this target"));
9556 /* Provide thread local base, i.e. Thread Information Block address.
9557 Returns 1 if ptid is found and thread_local_base is non zero. */
9560 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
9562 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
9564 struct remote_state
*rs
= get_remote_state ();
9566 char *endp
= rs
->buf
+ get_remote_packet_size ();
9567 enum packet_result result
;
9569 strcpy (p
, "qGetTIBAddr:");
9571 p
= write_ptid (p
, endp
, ptid
);
9575 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9576 result
= packet_ok (rs
->buf
,
9577 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9578 if (result
== PACKET_OK
)
9582 unpack_varlen_hex (rs
->buf
, &result
);
9584 *addr
= (CORE_ADDR
) result
;
9587 else if (result
== PACKET_UNKNOWN
)
9588 error (_("Remote target doesn't support qGetTIBAddr packet"));
9590 error (_("Remote target failed to process qGetTIBAddr request"));
9593 error (_("qGetTIBAddr not supported or disabled on this target"));
9598 /* Support for inferring a target description based on the current
9599 architecture and the size of a 'g' packet. While the 'g' packet
9600 can have any size (since optional registers can be left off the
9601 end), some sizes are easily recognizable given knowledge of the
9602 approximate architecture. */
9604 struct remote_g_packet_guess
9607 const struct target_desc
*tdesc
;
9609 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9610 DEF_VEC_O(remote_g_packet_guess_s
);
9612 struct remote_g_packet_data
9614 VEC(remote_g_packet_guess_s
) *guesses
;
9617 static struct gdbarch_data
*remote_g_packet_data_handle
;
9620 remote_g_packet_data_init (struct obstack
*obstack
)
9622 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9626 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9627 const struct target_desc
*tdesc
)
9629 struct remote_g_packet_data
*data
9630 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9631 struct remote_g_packet_guess new_guess
, *guess
;
9634 gdb_assert (tdesc
!= NULL
);
9637 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9639 if (guess
->bytes
== bytes
)
9640 internal_error (__FILE__
, __LINE__
,
9641 _("Duplicate g packet description added for size %d"),
9644 new_guess
.bytes
= bytes
;
9645 new_guess
.tdesc
= tdesc
;
9646 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9649 /* Return 1 if remote_read_description would do anything on this target
9650 and architecture, 0 otherwise. */
9653 remote_read_description_p (struct target_ops
*target
)
9655 struct remote_g_packet_data
*data
9656 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9658 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9664 static const struct target_desc
*
9665 remote_read_description (struct target_ops
*target
)
9667 struct remote_g_packet_data
*data
9668 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9670 /* Do not try this during initial connection, when we do not know
9671 whether there is a running but stopped thread. */
9672 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9673 return target
->beneath
->to_read_description (target
->beneath
);
9675 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9677 struct remote_g_packet_guess
*guess
;
9679 int bytes
= send_g_packet ();
9682 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9684 if (guess
->bytes
== bytes
)
9685 return guess
->tdesc
;
9687 /* We discard the g packet. A minor optimization would be to
9688 hold on to it, and fill the register cache once we have selected
9689 an architecture, but it's too tricky to do safely. */
9692 return target
->beneath
->to_read_description (target
->beneath
);
9695 /* Remote file transfer support. This is host-initiated I/O, not
9696 target-initiated; for target-initiated, see remote-fileio.c. */
9698 /* If *LEFT is at least the length of STRING, copy STRING to
9699 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9700 decrease *LEFT. Otherwise raise an error. */
9703 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9705 int len
= strlen (string
);
9708 error (_("Packet too long for target."));
9710 memcpy (*buffer
, string
, len
);
9714 /* NUL-terminate the buffer as a convenience, if there is
9720 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9721 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9722 decrease *LEFT. Otherwise raise an error. */
9725 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9728 if (2 * len
> *left
)
9729 error (_("Packet too long for target."));
9731 bin2hex (bytes
, *buffer
, len
);
9735 /* NUL-terminate the buffer as a convenience, if there is
9741 /* If *LEFT is large enough, convert VALUE to hex and add it to
9742 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9743 decrease *LEFT. Otherwise raise an error. */
9746 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9748 int len
= hexnumlen (value
);
9751 error (_("Packet too long for target."));
9753 hexnumstr (*buffer
, value
);
9757 /* NUL-terminate the buffer as a convenience, if there is
9763 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9764 value, *REMOTE_ERRNO to the remote error number or zero if none
9765 was included, and *ATTACHMENT to point to the start of the annex
9766 if any. The length of the packet isn't needed here; there may
9767 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9769 Return 0 if the packet could be parsed, -1 if it could not. If
9770 -1 is returned, the other variables may not be initialized. */
9773 remote_hostio_parse_result (char *buffer
, int *retcode
,
9774 int *remote_errno
, char **attachment
)
9781 if (buffer
[0] != 'F')
9785 *retcode
= strtol (&buffer
[1], &p
, 16);
9786 if (errno
!= 0 || p
== &buffer
[1])
9789 /* Check for ",errno". */
9793 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9794 if (errno
!= 0 || p
+ 1 == p2
)
9799 /* Check for ";attachment". If there is no attachment, the
9800 packet should end here. */
9803 *attachment
= p
+ 1;
9806 else if (*p
== '\0')
9812 /* Send a prepared I/O packet to the target and read its response.
9813 The prepared packet is in the global RS->BUF before this function
9814 is called, and the answer is there when we return.
9816 COMMAND_BYTES is the length of the request to send, which may include
9817 binary data. WHICH_PACKET is the packet configuration to check
9818 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9819 is set to the error number and -1 is returned. Otherwise the value
9820 returned by the function is returned.
9822 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9823 attachment is expected; an error will be reported if there's a
9824 mismatch. If one is found, *ATTACHMENT will be set to point into
9825 the packet buffer and *ATTACHMENT_LEN will be set to the
9826 attachment's length. */
9829 remote_hostio_send_command (int command_bytes
, int which_packet
,
9830 int *remote_errno
, char **attachment
,
9831 int *attachment_len
)
9833 struct remote_state
*rs
= get_remote_state ();
9834 int ret
, bytes_read
;
9835 char *attachment_tmp
;
9837 if (!rs
->remote_desc
9838 || packet_support (which_packet
) == PACKET_DISABLE
)
9840 *remote_errno
= FILEIO_ENOSYS
;
9844 putpkt_binary (rs
->buf
, command_bytes
);
9845 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9847 /* If it timed out, something is wrong. Don't try to parse the
9851 *remote_errno
= FILEIO_EINVAL
;
9855 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9858 *remote_errno
= FILEIO_EINVAL
;
9860 case PACKET_UNKNOWN
:
9861 *remote_errno
= FILEIO_ENOSYS
;
9867 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9870 *remote_errno
= FILEIO_EINVAL
;
9874 /* Make sure we saw an attachment if and only if we expected one. */
9875 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9876 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9878 *remote_errno
= FILEIO_EINVAL
;
9882 /* If an attachment was found, it must point into the packet buffer;
9883 work out how many bytes there were. */
9884 if (attachment_tmp
!= NULL
)
9886 *attachment
= attachment_tmp
;
9887 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9893 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9894 remote file descriptor, or -1 if an error occurs (and set
9898 remote_hostio_open (struct target_ops
*self
,
9899 const char *filename
, int flags
, int mode
,
9902 struct remote_state
*rs
= get_remote_state ();
9904 int left
= get_remote_packet_size () - 1;
9906 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9908 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9910 remote_buffer_add_string (&p
, &left
, ",");
9912 remote_buffer_add_int (&p
, &left
, flags
);
9913 remote_buffer_add_string (&p
, &left
, ",");
9915 remote_buffer_add_int (&p
, &left
, mode
);
9917 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9918 remote_errno
, NULL
, NULL
);
9921 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9922 Return the number of bytes written, or -1 if an error occurs (and
9923 set *REMOTE_ERRNO). */
9926 remote_hostio_pwrite (struct target_ops
*self
,
9927 int fd
, const gdb_byte
*write_buf
, int len
,
9928 ULONGEST offset
, int *remote_errno
)
9930 struct remote_state
*rs
= get_remote_state ();
9932 int left
= get_remote_packet_size ();
9935 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9937 remote_buffer_add_int (&p
, &left
, fd
);
9938 remote_buffer_add_string (&p
, &left
, ",");
9940 remote_buffer_add_int (&p
, &left
, offset
);
9941 remote_buffer_add_string (&p
, &left
, ",");
9943 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9944 get_remote_packet_size () - (p
- rs
->buf
));
9946 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9947 remote_errno
, NULL
, NULL
);
9950 /* Read up to LEN bytes FD on the remote target into READ_BUF
9951 Return the number of bytes read, or -1 if an error occurs (and
9952 set *REMOTE_ERRNO). */
9955 remote_hostio_pread (struct target_ops
*self
,
9956 int fd
, gdb_byte
*read_buf
, int len
,
9957 ULONGEST offset
, int *remote_errno
)
9959 struct remote_state
*rs
= get_remote_state ();
9962 int left
= get_remote_packet_size ();
9963 int ret
, attachment_len
;
9966 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9968 remote_buffer_add_int (&p
, &left
, fd
);
9969 remote_buffer_add_string (&p
, &left
, ",");
9971 remote_buffer_add_int (&p
, &left
, len
);
9972 remote_buffer_add_string (&p
, &left
, ",");
9974 remote_buffer_add_int (&p
, &left
, offset
);
9976 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9977 remote_errno
, &attachment
,
9983 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9985 if (read_len
!= ret
)
9986 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9991 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9992 (and set *REMOTE_ERRNO). */
9995 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9997 struct remote_state
*rs
= get_remote_state ();
9999 int left
= get_remote_packet_size () - 1;
10001 remote_buffer_add_string (&p
, &left
, "vFile:close:");
10003 remote_buffer_add_int (&p
, &left
, fd
);
10005 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
10006 remote_errno
, NULL
, NULL
);
10009 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
10010 occurs (and set *REMOTE_ERRNO). */
10013 remote_hostio_unlink (struct target_ops
*self
,
10014 const char *filename
, int *remote_errno
)
10016 struct remote_state
*rs
= get_remote_state ();
10018 int left
= get_remote_packet_size () - 1;
10020 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
10022 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
10023 strlen (filename
));
10025 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
10026 remote_errno
, NULL
, NULL
);
10029 /* Read value of symbolic link FILENAME on the remote target. Return
10030 a null-terminated string allocated via xmalloc, or NULL if an error
10031 occurs (and set *REMOTE_ERRNO). */
10034 remote_hostio_readlink (struct target_ops
*self
,
10035 const char *filename
, int *remote_errno
)
10037 struct remote_state
*rs
= get_remote_state ();
10040 int left
= get_remote_packet_size ();
10041 int len
, attachment_len
;
10045 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
10047 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
10048 strlen (filename
));
10050 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
10051 remote_errno
, &attachment
,
10057 ret
= xmalloc (len
+ 1);
10059 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
10060 (gdb_byte
*) ret
, len
);
10061 if (read_len
!= len
)
10062 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
10068 /* Read information about the open file FD on the remote target
10069 into ST. Return 0 on success, or -1 if an error occurs (and
10070 set *REMOTE_ERRNO). */
10073 remote_hostio_fstat (struct target_ops
*self
,
10074 int fd
, struct stat
*st
,
10077 struct remote_state
*rs
= get_remote_state ();
10079 int left
= get_remote_packet_size ();
10080 int attachment_len
, ret
;
10082 struct fio_stat fst
;
10085 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
10087 remote_buffer_add_int (&p
, &left
, fd
);
10089 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
10090 remote_errno
, &attachment
,
10094 if (*remote_errno
!= FILEIO_ENOSYS
)
10097 /* Strictly we should return -1, ENOSYS here, but when
10098 "set sysroot remote:" was implemented in August 2008
10099 BFD's need for a stat function was sidestepped with
10100 this hack. This was not remedied until March 2015
10101 so we retain the previous behavior to avoid breaking
10104 Note that the memset is a March 2015 addition; older
10105 GDBs set st_size *and nothing else* so the structure
10106 would have garbage in all other fields. This might
10107 break something but retaining the previous behavior
10108 here would be just too wrong. */
10110 memset (st
, 0, sizeof (struct stat
));
10111 st
->st_size
= INT_MAX
;
10115 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
10116 (gdb_byte
*) &fst
, sizeof (fst
));
10118 if (read_len
!= ret
)
10119 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
10121 if (read_len
!= sizeof (fst
))
10122 error (_("vFile:fstat returned %d bytes, but expecting %d."),
10123 read_len
, (int) sizeof (fst
));
10125 remote_fileio_to_host_stat (&fst
, st
);
10131 remote_fileio_errno_to_host (int errnum
)
10137 case FILEIO_ENOENT
:
10145 case FILEIO_EACCES
:
10147 case FILEIO_EFAULT
:
10151 case FILEIO_EEXIST
:
10153 case FILEIO_ENODEV
:
10155 case FILEIO_ENOTDIR
:
10157 case FILEIO_EISDIR
:
10159 case FILEIO_EINVAL
:
10161 case FILEIO_ENFILE
:
10163 case FILEIO_EMFILE
:
10167 case FILEIO_ENOSPC
:
10169 case FILEIO_ESPIPE
:
10173 case FILEIO_ENOSYS
:
10175 case FILEIO_ENAMETOOLONG
:
10176 return ENAMETOOLONG
;
10182 remote_hostio_error (int errnum
)
10184 int host_error
= remote_fileio_errno_to_host (errnum
);
10186 if (host_error
== -1)
10187 error (_("Unknown remote I/O error %d"), errnum
);
10189 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10193 remote_hostio_close_cleanup (void *opaque
)
10195 int fd
= *(int *) opaque
;
10198 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
10203 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10205 const char *filename
= bfd_get_filename (abfd
);
10206 int fd
, remote_errno
;
10209 gdb_assert (remote_filename_p (filename
));
10211 fd
= remote_hostio_open (find_target_at (process_stratum
),
10212 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10215 errno
= remote_fileio_errno_to_host (remote_errno
);
10216 bfd_set_error (bfd_error_system_call
);
10220 stream
= xmalloc (sizeof (int));
10226 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10228 int fd
= *(int *)stream
;
10233 /* Ignore errors on close; these may happen if the remote
10234 connection was already torn down. */
10235 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
10237 /* Zero means success. */
10242 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10243 file_ptr nbytes
, file_ptr offset
)
10245 int fd
= *(int *)stream
;
10247 file_ptr pos
, bytes
;
10250 while (nbytes
> pos
)
10252 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10253 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10254 offset
+ pos
, &remote_errno
);
10256 /* Success, but no bytes, means end-of-file. */
10260 errno
= remote_fileio_errno_to_host (remote_errno
);
10261 bfd_set_error (bfd_error_system_call
);
10272 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10274 int fd
= *(int *) stream
;
10278 result
= remote_hostio_fstat (find_target_at (process_stratum
),
10279 fd
, sb
, &remote_errno
);
10283 errno
= remote_fileio_errno_to_host (remote_errno
);
10284 bfd_set_error (bfd_error_system_call
);
10291 remote_filename_p (const char *filename
)
10293 return startswith (filename
, REMOTE_SYSROOT_PREFIX
);
10297 remote_bfd_open (const char *remote_file
, const char *target
)
10299 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10300 remote_bfd_iovec_open
, NULL
,
10301 remote_bfd_iovec_pread
,
10302 remote_bfd_iovec_close
,
10303 remote_bfd_iovec_stat
);
10309 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10311 struct cleanup
*back_to
, *close_cleanup
;
10312 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10315 int bytes_in_buffer
;
10318 struct remote_state
*rs
= get_remote_state ();
10320 if (!rs
->remote_desc
)
10321 error (_("command can only be used with remote target"));
10323 file
= gdb_fopen_cloexec (local_file
, "rb");
10325 perror_with_name (local_file
);
10326 back_to
= make_cleanup_fclose (file
);
10328 fd
= remote_hostio_open (find_target_at (process_stratum
),
10329 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10331 0700, &remote_errno
);
10333 remote_hostio_error (remote_errno
);
10335 /* Send up to this many bytes at once. They won't all fit in the
10336 remote packet limit, so we'll transfer slightly fewer. */
10337 io_size
= get_remote_packet_size ();
10338 buffer
= xmalloc (io_size
);
10339 make_cleanup (xfree
, buffer
);
10341 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10343 bytes_in_buffer
= 0;
10346 while (bytes_in_buffer
|| !saw_eof
)
10350 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10351 io_size
- bytes_in_buffer
,
10356 error (_("Error reading %s."), local_file
);
10359 /* EOF. Unless there is something still in the
10360 buffer from the last iteration, we are done. */
10362 if (bytes_in_buffer
== 0)
10370 bytes
+= bytes_in_buffer
;
10371 bytes_in_buffer
= 0;
10373 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10375 offset
, &remote_errno
);
10378 remote_hostio_error (remote_errno
);
10379 else if (retcode
== 0)
10380 error (_("Remote write of %d bytes returned 0!"), bytes
);
10381 else if (retcode
< bytes
)
10383 /* Short write. Save the rest of the read data for the next
10385 bytes_in_buffer
= bytes
- retcode
;
10386 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10392 discard_cleanups (close_cleanup
);
10393 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10394 remote_hostio_error (remote_errno
);
10397 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10398 do_cleanups (back_to
);
10402 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10404 struct cleanup
*back_to
, *close_cleanup
;
10405 int fd
, remote_errno
, bytes
, io_size
;
10409 struct remote_state
*rs
= get_remote_state ();
10411 if (!rs
->remote_desc
)
10412 error (_("command can only be used with remote target"));
10414 fd
= remote_hostio_open (find_target_at (process_stratum
),
10415 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10417 remote_hostio_error (remote_errno
);
10419 file
= gdb_fopen_cloexec (local_file
, "wb");
10421 perror_with_name (local_file
);
10422 back_to
= make_cleanup_fclose (file
);
10424 /* Send up to this many bytes at once. They won't all fit in the
10425 remote packet limit, so we'll transfer slightly fewer. */
10426 io_size
= get_remote_packet_size ();
10427 buffer
= xmalloc (io_size
);
10428 make_cleanup (xfree
, buffer
);
10430 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10435 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10436 fd
, buffer
, io_size
, offset
, &remote_errno
);
10438 /* Success, but no bytes, means end-of-file. */
10441 remote_hostio_error (remote_errno
);
10445 bytes
= fwrite (buffer
, 1, bytes
, file
);
10447 perror_with_name (local_file
);
10450 discard_cleanups (close_cleanup
);
10451 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10452 remote_hostio_error (remote_errno
);
10455 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10456 do_cleanups (back_to
);
10460 remote_file_delete (const char *remote_file
, int from_tty
)
10462 int retcode
, remote_errno
;
10463 struct remote_state
*rs
= get_remote_state ();
10465 if (!rs
->remote_desc
)
10466 error (_("command can only be used with remote target"));
10468 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10469 remote_file
, &remote_errno
);
10471 remote_hostio_error (remote_errno
);
10474 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10478 remote_put_command (char *args
, int from_tty
)
10480 struct cleanup
*back_to
;
10484 error_no_arg (_("file to put"));
10486 argv
= gdb_buildargv (args
);
10487 back_to
= make_cleanup_freeargv (argv
);
10488 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10489 error (_("Invalid parameters to remote put"));
10491 remote_file_put (argv
[0], argv
[1], from_tty
);
10493 do_cleanups (back_to
);
10497 remote_get_command (char *args
, int from_tty
)
10499 struct cleanup
*back_to
;
10503 error_no_arg (_("file to get"));
10505 argv
= gdb_buildargv (args
);
10506 back_to
= make_cleanup_freeargv (argv
);
10507 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10508 error (_("Invalid parameters to remote get"));
10510 remote_file_get (argv
[0], argv
[1], from_tty
);
10512 do_cleanups (back_to
);
10516 remote_delete_command (char *args
, int from_tty
)
10518 struct cleanup
*back_to
;
10522 error_no_arg (_("file to delete"));
10524 argv
= gdb_buildargv (args
);
10525 back_to
= make_cleanup_freeargv (argv
);
10526 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10527 error (_("Invalid parameters to remote delete"));
10529 remote_file_delete (argv
[0], from_tty
);
10531 do_cleanups (back_to
);
10535 remote_command (char *args
, int from_tty
)
10537 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
10541 remote_can_execute_reverse (struct target_ops
*self
)
10543 if (packet_support (PACKET_bs
) == PACKET_ENABLE
10544 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
10551 remote_supports_non_stop (struct target_ops
*self
)
10557 remote_supports_disable_randomization (struct target_ops
*self
)
10559 /* Only supported in extended mode. */
10564 remote_supports_multi_process (struct target_ops
*self
)
10566 struct remote_state
*rs
= get_remote_state ();
10568 /* Only extended-remote handles being attached to multiple
10569 processes, even though plain remote can use the multi-process
10570 thread id extensions, so that GDB knows the target process's
10572 return rs
->extended
&& remote_multi_process_p (rs
);
10576 remote_supports_cond_tracepoints (void)
10578 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
10582 remote_supports_cond_breakpoints (struct target_ops
*self
)
10584 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
10588 remote_supports_fast_tracepoints (void)
10590 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
10594 remote_supports_static_tracepoints (void)
10596 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
10600 remote_supports_install_in_trace (void)
10602 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
10606 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10608 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
10613 remote_supports_string_tracing (struct target_ops
*self
)
10615 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
10619 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10621 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
10625 remote_trace_init (struct target_ops
*self
)
10628 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10629 if (strcmp (target_buf
, "OK") != 0)
10630 error (_("Target does not support this command."));
10633 static void free_actions_list (char **actions_list
);
10634 static void free_actions_list_cleanup_wrapper (void *);
10636 free_actions_list_cleanup_wrapper (void *al
)
10638 free_actions_list (al
);
10642 free_actions_list (char **actions_list
)
10646 if (actions_list
== 0)
10649 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10650 xfree (actions_list
[ndx
]);
10652 xfree (actions_list
);
10655 /* Recursive routine to walk through command list including loops, and
10656 download packets for each command. */
10659 remote_download_command_source (int num
, ULONGEST addr
,
10660 struct command_line
*cmds
)
10662 struct remote_state
*rs
= get_remote_state ();
10663 struct command_line
*cmd
;
10665 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10667 QUIT
; /* Allow user to bail out with ^C. */
10668 strcpy (rs
->buf
, "QTDPsrc:");
10669 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10670 rs
->buf
+ strlen (rs
->buf
),
10671 rs
->buf_size
- strlen (rs
->buf
));
10673 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10674 if (strcmp (target_buf
, "OK"))
10675 warning (_("Target does not support source download."));
10677 if (cmd
->control_type
== while_control
10678 || cmd
->control_type
== while_stepping_control
)
10680 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10682 QUIT
; /* Allow user to bail out with ^C. */
10683 strcpy (rs
->buf
, "QTDPsrc:");
10684 encode_source_string (num
, addr
, "cmd", "end",
10685 rs
->buf
+ strlen (rs
->buf
),
10686 rs
->buf_size
- strlen (rs
->buf
));
10688 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10689 if (strcmp (target_buf
, "OK"))
10690 warning (_("Target does not support source download."));
10696 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10698 #define BUF_SIZE 2048
10702 char buf
[BUF_SIZE
];
10703 char **tdp_actions
;
10704 char **stepping_actions
;
10706 struct cleanup
*old_chain
= NULL
;
10707 struct agent_expr
*aexpr
;
10708 struct cleanup
*aexpr_chain
= NULL
;
10710 struct breakpoint
*b
= loc
->owner
;
10711 struct tracepoint
*t
= (struct tracepoint
*) b
;
10713 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10714 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10716 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10719 tpaddr
= loc
->address
;
10720 sprintf_vma (addrbuf
, tpaddr
);
10721 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10722 addrbuf
, /* address */
10723 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10724 t
->step_count
, t
->pass_count
);
10725 /* Fast tracepoints are mostly handled by the target, but we can
10726 tell the target how big of an instruction block should be moved
10728 if (b
->type
== bp_fast_tracepoint
)
10730 /* Only test for support at download time; we may not know
10731 target capabilities at definition time. */
10732 if (remote_supports_fast_tracepoints ())
10736 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10737 tpaddr
, &isize
, NULL
))
10738 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10741 /* If it passed validation at definition but fails now,
10742 something is very wrong. */
10743 internal_error (__FILE__
, __LINE__
,
10744 _("Fast tracepoint not "
10745 "valid during download"));
10748 /* Fast tracepoints are functionally identical to regular
10749 tracepoints, so don't take lack of support as a reason to
10750 give up on the trace run. */
10751 warning (_("Target does not support fast tracepoints, "
10752 "downloading %d as regular tracepoint"), b
->number
);
10754 else if (b
->type
== bp_static_tracepoint
)
10756 /* Only test for support at download time; we may not know
10757 target capabilities at definition time. */
10758 if (remote_supports_static_tracepoints ())
10760 struct static_tracepoint_marker marker
;
10762 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10763 strcat (buf
, ":S");
10765 error (_("Static tracepoint not valid during download"));
10768 /* Fast tracepoints are functionally identical to regular
10769 tracepoints, so don't take lack of support as a reason
10770 to give up on the trace run. */
10771 error (_("Target does not support static tracepoints"));
10773 /* If the tracepoint has a conditional, make it into an agent
10774 expression and append to the definition. */
10777 /* Only test support at download time, we may not know target
10778 capabilities at definition time. */
10779 if (remote_supports_cond_tracepoints ())
10781 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10782 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10783 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10785 pkt
= buf
+ strlen (buf
);
10786 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10787 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10789 do_cleanups (aexpr_chain
);
10792 warning (_("Target does not support conditional tracepoints, "
10793 "ignoring tp %d cond"), b
->number
);
10796 if (b
->commands
|| *default_collect
)
10799 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10800 if (strcmp (target_buf
, "OK"))
10801 error (_("Target does not support tracepoints."));
10803 /* do_single_steps (t); */
10806 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10808 QUIT
; /* Allow user to bail out with ^C. */
10809 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10810 b
->number
, addrbuf
, /* address */
10812 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10815 remote_get_noisy_reply (&target_buf
,
10817 if (strcmp (target_buf
, "OK"))
10818 error (_("Error on target while setting tracepoints."));
10821 if (stepping_actions
)
10823 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10825 QUIT
; /* Allow user to bail out with ^C. */
10826 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10827 b
->number
, addrbuf
, /* address */
10828 ((ndx
== 0) ? "S" : ""),
10829 stepping_actions
[ndx
],
10830 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10832 remote_get_noisy_reply (&target_buf
,
10834 if (strcmp (target_buf
, "OK"))
10835 error (_("Error on target while setting tracepoints."));
10839 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
10841 if (b
->addr_string
)
10843 strcpy (buf
, "QTDPsrc:");
10844 encode_source_string (b
->number
, loc
->address
,
10845 "at", b
->addr_string
, buf
+ strlen (buf
),
10846 2048 - strlen (buf
));
10849 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10850 if (strcmp (target_buf
, "OK"))
10851 warning (_("Target does not support source download."));
10853 if (b
->cond_string
)
10855 strcpy (buf
, "QTDPsrc:");
10856 encode_source_string (b
->number
, loc
->address
,
10857 "cond", b
->cond_string
, buf
+ strlen (buf
),
10858 2048 - strlen (buf
));
10860 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10861 if (strcmp (target_buf
, "OK"))
10862 warning (_("Target does not support source download."));
10864 remote_download_command_source (b
->number
, loc
->address
,
10865 breakpoint_commands (b
));
10868 do_cleanups (old_chain
);
10872 remote_can_download_tracepoint (struct target_ops
*self
)
10874 struct remote_state
*rs
= get_remote_state ();
10875 struct trace_status
*ts
;
10878 /* Don't try to install tracepoints until we've relocated our
10879 symbols, and fetched and merged the target's tracepoint list with
10881 if (rs
->starting_up
)
10884 ts
= current_trace_status ();
10885 status
= remote_get_trace_status (self
, ts
);
10887 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10890 /* If we are in a tracing experiment, but remote stub doesn't support
10891 installing tracepoint in trace, we have to return. */
10892 if (!remote_supports_install_in_trace ())
10900 remote_download_trace_state_variable (struct target_ops
*self
,
10901 struct trace_state_variable
*tsv
)
10903 struct remote_state
*rs
= get_remote_state ();
10906 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10907 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10909 p
= rs
->buf
+ strlen (rs
->buf
);
10910 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10911 error (_("Trace state variable name too long for tsv definition packet"));
10912 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10915 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10916 if (*target_buf
== '\0')
10917 error (_("Target does not support this command."));
10918 if (strcmp (target_buf
, "OK") != 0)
10919 error (_("Error on target while downloading trace state variable."));
10923 remote_enable_tracepoint (struct target_ops
*self
,
10924 struct bp_location
*location
)
10926 struct remote_state
*rs
= get_remote_state ();
10929 sprintf_vma (addr_buf
, location
->address
);
10930 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10931 location
->owner
->number
, addr_buf
);
10933 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10934 if (*rs
->buf
== '\0')
10935 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10936 if (strcmp (rs
->buf
, "OK") != 0)
10937 error (_("Error on target while enabling tracepoint."));
10941 remote_disable_tracepoint (struct target_ops
*self
,
10942 struct bp_location
*location
)
10944 struct remote_state
*rs
= get_remote_state ();
10947 sprintf_vma (addr_buf
, location
->address
);
10948 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10949 location
->owner
->number
, addr_buf
);
10951 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10952 if (*rs
->buf
== '\0')
10953 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10954 if (strcmp (rs
->buf
, "OK") != 0)
10955 error (_("Error on target while disabling tracepoint."));
10959 remote_trace_set_readonly_regions (struct target_ops
*self
)
10963 bfd_size_type size
;
10969 return; /* No information to give. */
10971 strcpy (target_buf
, "QTro");
10972 offset
= strlen (target_buf
);
10973 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10975 char tmp1
[40], tmp2
[40];
10978 if ((s
->flags
& SEC_LOAD
) == 0 ||
10979 /* (s->flags & SEC_CODE) == 0 || */
10980 (s
->flags
& SEC_READONLY
) == 0)
10984 vma
= bfd_get_section_vma (abfd
, s
);
10985 size
= bfd_get_section_size (s
);
10986 sprintf_vma (tmp1
, vma
);
10987 sprintf_vma (tmp2
, vma
+ size
);
10988 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10989 if (offset
+ sec_length
+ 1 > target_buf_size
)
10991 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
10993 Too many sections for read-only sections definition packet."));
10996 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10998 offset
+= sec_length
;
11002 putpkt (target_buf
);
11003 getpkt (&target_buf
, &target_buf_size
, 0);
11008 remote_trace_start (struct target_ops
*self
)
11010 putpkt ("QTStart");
11011 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11012 if (*target_buf
== '\0')
11013 error (_("Target does not support this command."));
11014 if (strcmp (target_buf
, "OK") != 0)
11015 error (_("Bogus reply from target: %s"), target_buf
);
11019 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
11021 /* Initialize it just to avoid a GCC false warning. */
11023 /* FIXME we need to get register block size some other way. */
11024 extern int trace_regblock_size
;
11025 enum packet_result result
;
11027 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
11030 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
11032 putpkt ("qTStatus");
11036 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11038 CATCH (ex
, RETURN_MASK_ERROR
)
11040 if (ex
.error
!= TARGET_CLOSE_ERROR
)
11042 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
11045 throw_exception (ex
);
11049 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
11051 /* If the remote target doesn't do tracing, flag it. */
11052 if (result
== PACKET_UNKNOWN
)
11055 /* We're working with a live target. */
11056 ts
->filename
= NULL
;
11059 error (_("Bogus trace status reply from target: %s"), target_buf
);
11061 /* Function 'parse_trace_status' sets default value of each field of
11062 'ts' at first, so we don't have to do it here. */
11063 parse_trace_status (p
, ts
);
11065 return ts
->running
;
11069 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
11070 struct uploaded_tp
*utp
)
11072 struct remote_state
*rs
= get_remote_state ();
11074 struct bp_location
*loc
;
11075 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
11076 size_t size
= get_remote_packet_size ();
11080 tp
->base
.hit_count
= 0;
11081 tp
->traceframe_usage
= 0;
11082 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
11084 /* If the tracepoint was never downloaded, don't go asking for
11086 if (tp
->number_on_target
== 0)
11088 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
11089 phex_nz (loc
->address
, 0));
11091 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11092 if (reply
&& *reply
)
11095 parse_tracepoint_status (reply
+ 1, bp
, utp
);
11101 utp
->hit_count
= 0;
11102 utp
->traceframe_usage
= 0;
11103 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
11104 phex_nz (utp
->addr
, 0));
11106 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11107 if (reply
&& *reply
)
11110 parse_tracepoint_status (reply
+ 1, bp
, utp
);
11116 remote_trace_stop (struct target_ops
*self
)
11119 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11120 if (*target_buf
== '\0')
11121 error (_("Target does not support this command."));
11122 if (strcmp (target_buf
, "OK") != 0)
11123 error (_("Bogus reply from target: %s"), target_buf
);
11127 remote_trace_find (struct target_ops
*self
,
11128 enum trace_find_type type
, int num
,
11129 CORE_ADDR addr1
, CORE_ADDR addr2
,
11132 struct remote_state
*rs
= get_remote_state ();
11133 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11135 int target_frameno
= -1, target_tracept
= -1;
11137 /* Lookups other than by absolute frame number depend on the current
11138 trace selected, so make sure it is correct on the remote end
11140 if (type
!= tfind_number
)
11141 set_remote_traceframe ();
11144 strcpy (p
, "QTFrame:");
11145 p
= strchr (p
, '\0');
11149 xsnprintf (p
, endbuf
- p
, "%x", num
);
11152 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
11155 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
11158 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
11159 phex_nz (addr2
, 0));
11161 case tfind_outside
:
11162 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
11163 phex_nz (addr2
, 0));
11166 error (_("Unknown trace find type %d"), type
);
11170 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
11171 if (*reply
== '\0')
11172 error (_("Target does not support this command."));
11174 while (reply
&& *reply
)
11179 target_frameno
= (int) strtol (p
, &reply
, 16);
11181 error (_("Unable to parse trace frame number"));
11182 /* Don't update our remote traceframe number cache on failure
11183 to select a remote traceframe. */
11184 if (target_frameno
== -1)
11189 target_tracept
= (int) strtol (p
, &reply
, 16);
11191 error (_("Unable to parse tracepoint number"));
11193 case 'O': /* "OK"? */
11194 if (reply
[1] == 'K' && reply
[2] == '\0')
11197 error (_("Bogus reply from target: %s"), reply
);
11200 error (_("Bogus reply from target: %s"), reply
);
11203 *tpp
= target_tracept
;
11205 rs
->remote_traceframe_number
= target_frameno
;
11206 return target_frameno
;
11210 remote_get_trace_state_variable_value (struct target_ops
*self
,
11211 int tsvnum
, LONGEST
*val
)
11213 struct remote_state
*rs
= get_remote_state ();
11217 set_remote_traceframe ();
11219 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11221 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11222 if (reply
&& *reply
)
11226 unpack_varlen_hex (reply
+ 1, &uval
);
11227 *val
= (LONGEST
) uval
;
11235 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
11237 struct remote_state
*rs
= get_remote_state ();
11241 strcpy (p
, "QTSave:");
11243 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11244 error (_("Remote file name too long for trace save packet"));
11245 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
11248 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11249 if (*reply
== '\0')
11250 error (_("Target does not support this command."));
11251 if (strcmp (reply
, "OK") != 0)
11252 error (_("Bogus reply from target: %s"), reply
);
11256 /* This is basically a memory transfer, but needs to be its own packet
11257 because we don't know how the target actually organizes its trace
11258 memory, plus we want to be able to ask for as much as possible, but
11259 not be unhappy if we don't get as much as we ask for. */
11262 remote_get_raw_trace_data (struct target_ops
*self
,
11263 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11265 struct remote_state
*rs
= get_remote_state ();
11271 strcpy (p
, "qTBuffer:");
11273 p
+= hexnumstr (p
, offset
);
11275 p
+= hexnumstr (p
, len
);
11279 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11280 if (reply
&& *reply
)
11282 /* 'l' by itself means we're at the end of the buffer and
11283 there is nothing more to get. */
11287 /* Convert the reply into binary. Limit the number of bytes to
11288 convert according to our passed-in buffer size, rather than
11289 what was returned in the packet; if the target is
11290 unexpectedly generous and gives us a bigger reply than we
11291 asked for, we don't want to crash. */
11292 rslt
= hex2bin (target_buf
, buf
, len
);
11296 /* Something went wrong, flag as an error. */
11301 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
11303 struct remote_state
*rs
= get_remote_state ();
11305 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
11309 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11311 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11312 if (*reply
== '\0')
11313 error (_("Target does not support this command."));
11314 if (strcmp (reply
, "OK") != 0)
11315 error (_("Bogus reply from target: %s"), reply
);
11318 warning (_("Target does not support disconnected tracing."));
11322 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11324 struct thread_info
*info
= find_thread_ptid (ptid
);
11326 if (info
&& info
->priv
)
11327 return info
->priv
->core
;
11332 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
11334 struct remote_state
*rs
= get_remote_state ();
11337 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11339 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11340 if (*reply
== '\0')
11341 error (_("Target does not support this command."));
11342 if (strcmp (reply
, "OK") != 0)
11343 error (_("Bogus reply from target: %s"), reply
);
11346 static struct traceframe_info
*
11347 remote_traceframe_info (struct target_ops
*self
)
11351 text
= target_read_stralloc (¤t_target
,
11352 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11355 struct traceframe_info
*info
;
11356 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11358 info
= parse_traceframe_info (text
);
11359 do_cleanups (back_to
);
11366 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11367 instruction on which a fast tracepoint may be placed. Returns -1
11368 if the packet is not supported, and 0 if the minimum instruction
11369 length is unknown. */
11372 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
11374 struct remote_state
*rs
= get_remote_state ();
11377 /* If we're not debugging a process yet, the IPA can't be
11379 if (!target_has_execution
)
11382 /* Make sure the remote is pointing at the right process. */
11383 set_general_process ();
11385 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11387 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11388 if (*reply
== '\0')
11392 ULONGEST min_insn_len
;
11394 unpack_varlen_hex (reply
, &min_insn_len
);
11396 return (int) min_insn_len
;
11401 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
11403 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
11405 struct remote_state
*rs
= get_remote_state ();
11406 char *buf
= rs
->buf
;
11407 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11408 enum packet_result result
;
11410 gdb_assert (val
>= 0 || val
== -1);
11411 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11412 /* Send -1 as literal "-1" to avoid host size dependency. */
11416 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11419 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11422 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11423 result
= packet_ok (rs
->buf
,
11424 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11426 if (result
!= PACKET_OK
)
11427 warning (_("Bogus reply from target: %s"), rs
->buf
);
11432 remote_set_trace_notes (struct target_ops
*self
,
11433 const char *user
, const char *notes
,
11434 const char *stop_notes
)
11436 struct remote_state
*rs
= get_remote_state ();
11438 char *buf
= rs
->buf
;
11439 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11442 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11445 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11446 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11452 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11453 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11459 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11460 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11464 /* Ensure the buffer is terminated. */
11468 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11469 if (*reply
== '\0')
11472 if (strcmp (reply
, "OK") != 0)
11473 error (_("Bogus reply from target: %s"), reply
);
11479 remote_use_agent (struct target_ops
*self
, int use
)
11481 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
11483 struct remote_state
*rs
= get_remote_state ();
11485 /* If the stub supports QAgent. */
11486 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11488 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11490 if (strcmp (rs
->buf
, "OK") == 0)
11501 remote_can_use_agent (struct target_ops
*self
)
11503 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
11506 struct btrace_target_info
11508 /* The ptid of the traced thread. */
11511 /* The obtained branch trace configuration. */
11512 struct btrace_config conf
;
11515 /* Reset our idea of our target's btrace configuration. */
11518 remote_btrace_reset (void)
11520 struct remote_state
*rs
= get_remote_state ();
11522 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
11525 /* Check whether the target supports branch tracing. */
11528 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
11530 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
11532 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
11537 case BTRACE_FORMAT_NONE
:
11540 case BTRACE_FORMAT_BTS
:
11541 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
11544 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
11547 /* Synchronize the configuration with the target. */
11550 btrace_sync_conf (const struct btrace_config
*conf
)
11552 struct packet_config
*packet
;
11553 struct remote_state
*rs
;
11554 char *buf
, *pos
, *endbuf
;
11556 rs
= get_remote_state ();
11558 endbuf
= buf
+ get_remote_packet_size ();
11560 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
11561 if (packet_config_support (packet
) == PACKET_ENABLE
11562 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
11565 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
11569 getpkt (&buf
, &rs
->buf_size
, 0);
11571 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
11573 if (buf
[0] == 'E' && buf
[1] == '.')
11574 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
11576 error (_("Failed to configure the BTS buffer size."));
11579 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
11583 /* Read the current thread's btrace configuration from the target and
11584 store it into CONF. */
11587 btrace_read_config (struct btrace_config
*conf
)
11591 xml
= target_read_stralloc (¤t_target
,
11592 TARGET_OBJECT_BTRACE_CONF
, "");
11595 struct cleanup
*cleanup
;
11597 cleanup
= make_cleanup (xfree
, xml
);
11598 parse_xml_btrace_conf (conf
, xml
);
11599 do_cleanups (cleanup
);
11603 /* Enable branch tracing. */
11605 static struct btrace_target_info
*
11606 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
11607 const struct btrace_config
*conf
)
11609 struct btrace_target_info
*tinfo
= NULL
;
11610 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11611 struct remote_state
*rs
= get_remote_state ();
11612 char *buf
= rs
->buf
;
11613 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11615 if (packet_config_support (packet
) != PACKET_ENABLE
)
11616 error (_("Target does not support branch tracing."));
11618 btrace_sync_conf (conf
);
11620 set_general_thread (ptid
);
11622 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11624 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11626 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11628 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11629 error (_("Could not enable branch tracing for %s: %s"),
11630 target_pid_to_str (ptid
), rs
->buf
+ 2);
11632 error (_("Could not enable branch tracing for %s."),
11633 target_pid_to_str (ptid
));
11636 tinfo
= xzalloc (sizeof (*tinfo
));
11637 tinfo
->ptid
= ptid
;
11639 /* If we fail to read the configuration, we lose some information, but the
11640 tracing itself is not impacted. */
11643 btrace_read_config (&tinfo
->conf
);
11645 CATCH (err
, RETURN_MASK_ERROR
)
11647 if (err
.message
!= NULL
)
11648 warning ("%s", err
.message
);
11655 /* Disable branch tracing. */
11658 remote_disable_btrace (struct target_ops
*self
,
11659 struct btrace_target_info
*tinfo
)
11661 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11662 struct remote_state
*rs
= get_remote_state ();
11663 char *buf
= rs
->buf
;
11664 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11666 if (packet_config_support (packet
) != PACKET_ENABLE
)
11667 error (_("Target does not support branch tracing."));
11669 set_general_thread (tinfo
->ptid
);
11671 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11673 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11675 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11677 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11678 error (_("Could not disable branch tracing for %s: %s"),
11679 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11681 error (_("Could not disable branch tracing for %s."),
11682 target_pid_to_str (tinfo
->ptid
));
11688 /* Teardown branch tracing. */
11691 remote_teardown_btrace (struct target_ops
*self
,
11692 struct btrace_target_info
*tinfo
)
11694 /* We must not talk to the target during teardown. */
11698 /* Read the branch trace. */
11700 static enum btrace_error
11701 remote_read_btrace (struct target_ops
*self
,
11702 struct btrace_data
*btrace
,
11703 struct btrace_target_info
*tinfo
,
11704 enum btrace_read_type type
)
11706 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11707 struct remote_state
*rs
= get_remote_state ();
11708 struct cleanup
*cleanup
;
11712 if (packet_config_support (packet
) != PACKET_ENABLE
)
11713 error (_("Target does not support branch tracing."));
11715 #if !defined(HAVE_LIBEXPAT)
11716 error (_("Cannot process branch tracing result. XML parsing not supported."));
11721 case BTRACE_READ_ALL
:
11724 case BTRACE_READ_NEW
:
11727 case BTRACE_READ_DELTA
:
11731 internal_error (__FILE__
, __LINE__
,
11732 _("Bad branch tracing read type: %u."),
11733 (unsigned int) type
);
11736 xml
= target_read_stralloc (¤t_target
,
11737 TARGET_OBJECT_BTRACE
, annex
);
11739 return BTRACE_ERR_UNKNOWN
;
11741 cleanup
= make_cleanup (xfree
, xml
);
11742 parse_xml_btrace (btrace
, xml
);
11743 do_cleanups (cleanup
);
11745 return BTRACE_ERR_NONE
;
11748 static const struct btrace_config
*
11749 remote_btrace_conf (struct target_ops
*self
,
11750 const struct btrace_target_info
*tinfo
)
11752 return &tinfo
->conf
;
11756 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
11758 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
11762 /* Implementation of to_load. */
11765 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
11767 generic_load (name
, from_tty
);
11771 init_remote_ops (void)
11773 remote_ops
.to_shortname
= "remote";
11774 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11775 remote_ops
.to_doc
=
11776 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11777 Specify the serial device it is connected to\n\
11778 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11779 remote_ops
.to_open
= remote_open
;
11780 remote_ops
.to_close
= remote_close
;
11781 remote_ops
.to_detach
= remote_detach
;
11782 remote_ops
.to_disconnect
= remote_disconnect
;
11783 remote_ops
.to_resume
= remote_resume
;
11784 remote_ops
.to_wait
= remote_wait
;
11785 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11786 remote_ops
.to_store_registers
= remote_store_registers
;
11787 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11788 remote_ops
.to_files_info
= remote_files_info
;
11789 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11790 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11791 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
11792 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
11793 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
11794 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
11795 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11796 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11797 remote_ops
.to_watchpoint_addr_within_range
=
11798 remote_watchpoint_addr_within_range
;
11799 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11800 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11801 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11802 remote_ops
.to_region_ok_for_hw_watchpoint
11803 = remote_region_ok_for_hw_watchpoint
;
11804 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11805 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11806 remote_ops
.to_kill
= remote_kill
;
11807 remote_ops
.to_load
= remote_load
;
11808 remote_ops
.to_mourn_inferior
= remote_mourn
;
11809 remote_ops
.to_pass_signals
= remote_pass_signals
;
11810 remote_ops
.to_program_signals
= remote_program_signals
;
11811 remote_ops
.to_thread_alive
= remote_thread_alive
;
11812 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
11813 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11814 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11815 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11816 remote_ops
.to_stop
= remote_stop
;
11817 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11818 remote_ops
.to_rcmd
= remote_rcmd
;
11819 remote_ops
.to_log_command
= serial_log_command
;
11820 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11821 remote_ops
.to_stratum
= process_stratum
;
11822 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11823 remote_ops
.to_has_memory
= default_child_has_memory
;
11824 remote_ops
.to_has_stack
= default_child_has_stack
;
11825 remote_ops
.to_has_registers
= default_child_has_registers
;
11826 remote_ops
.to_has_execution
= default_child_has_execution
;
11827 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11828 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11829 remote_ops
.to_magic
= OPS_MAGIC
;
11830 remote_ops
.to_memory_map
= remote_memory_map
;
11831 remote_ops
.to_flash_erase
= remote_flash_erase
;
11832 remote_ops
.to_flash_done
= remote_flash_done
;
11833 remote_ops
.to_read_description
= remote_read_description
;
11834 remote_ops
.to_search_memory
= remote_search_memory
;
11835 remote_ops
.to_can_async_p
= remote_can_async_p
;
11836 remote_ops
.to_is_async_p
= remote_is_async_p
;
11837 remote_ops
.to_async
= remote_async
;
11838 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11839 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11840 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11841 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11842 remote_ops
.to_supports_disable_randomization
11843 = remote_supports_disable_randomization
;
11844 remote_ops
.to_fileio_open
= remote_hostio_open
;
11845 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11846 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11847 remote_ops
.to_fileio_close
= remote_hostio_close
;
11848 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11849 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11850 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11851 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11852 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11853 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11854 remote_ops
.to_trace_init
= remote_trace_init
;
11855 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11856 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11857 remote_ops
.to_download_trace_state_variable
11858 = remote_download_trace_state_variable
;
11859 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11860 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11861 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11862 remote_ops
.to_trace_start
= remote_trace_start
;
11863 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11864 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11865 remote_ops
.to_trace_stop
= remote_trace_stop
;
11866 remote_ops
.to_trace_find
= remote_trace_find
;
11867 remote_ops
.to_get_trace_state_variable_value
11868 = remote_get_trace_state_variable_value
;
11869 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11870 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11871 remote_ops
.to_upload_trace_state_variables
11872 = remote_upload_trace_state_variables
;
11873 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11874 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11875 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11876 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11877 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11878 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11879 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11880 remote_ops
.to_verify_memory
= remote_verify_memory
;
11881 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11882 remote_ops
.to_set_permissions
= remote_set_permissions
;
11883 remote_ops
.to_static_tracepoint_marker_at
11884 = remote_static_tracepoint_marker_at
;
11885 remote_ops
.to_static_tracepoint_markers_by_strid
11886 = remote_static_tracepoint_markers_by_strid
;
11887 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11888 remote_ops
.to_use_agent
= remote_use_agent
;
11889 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11890 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11891 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11892 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11893 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11894 remote_ops
.to_read_btrace
= remote_read_btrace
;
11895 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
11896 remote_ops
.to_augmented_libraries_svr4_read
=
11897 remote_augmented_libraries_svr4_read
;
11900 /* Set up the extended remote vector by making a copy of the standard
11901 remote vector and adding to it. */
11904 init_extended_remote_ops (void)
11906 extended_remote_ops
= remote_ops
;
11908 extended_remote_ops
.to_shortname
= "extended-remote";
11909 extended_remote_ops
.to_longname
=
11910 "Extended remote serial target in gdb-specific protocol";
11911 extended_remote_ops
.to_doc
=
11912 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11913 Specify the serial device it is connected to (e.g. /dev/ttya).";
11914 extended_remote_ops
.to_open
= extended_remote_open
;
11915 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11916 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11917 extended_remote_ops
.to_detach
= extended_remote_detach
;
11918 extended_remote_ops
.to_attach
= extended_remote_attach
;
11919 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
11920 extended_remote_ops
.to_kill
= extended_remote_kill
;
11921 extended_remote_ops
.to_supports_disable_randomization
11922 = extended_remote_supports_disable_randomization
;
11926 remote_can_async_p (struct target_ops
*ops
)
11928 struct remote_state
*rs
= get_remote_state ();
11930 if (!target_async_permitted
)
11931 /* We only enable async when the user specifically asks for it. */
11934 /* We're async whenever the serial device is. */
11935 return serial_can_async_p (rs
->remote_desc
);
11939 remote_is_async_p (struct target_ops
*ops
)
11941 struct remote_state
*rs
= get_remote_state ();
11943 if (!target_async_permitted
)
11944 /* We only enable async when the user specifically asks for it. */
11947 /* We're async whenever the serial device is. */
11948 return serial_is_async_p (rs
->remote_desc
);
11951 /* Pass the SERIAL event on and up to the client. One day this code
11952 will be able to delay notifying the client of an event until the
11953 point where an entire packet has been received. */
11955 static serial_event_ftype remote_async_serial_handler
;
11958 remote_async_serial_handler (struct serial
*scb
, void *context
)
11960 struct remote_state
*rs
= context
;
11962 /* Don't propogate error information up to the client. Instead let
11963 the client find out about the error by querying the target. */
11964 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11968 remote_async_inferior_event_handler (gdb_client_data data
)
11970 inferior_event_handler (INF_REG_EVENT
, NULL
);
11974 remote_async (struct target_ops
*ops
,
11975 void (*callback
) (enum inferior_event_type event_type
,
11979 struct remote_state
*rs
= get_remote_state ();
11981 if (callback
!= NULL
)
11983 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11984 rs
->async_client_callback
= callback
;
11985 rs
->async_client_context
= context
;
11987 /* If there are pending events in the stop reply queue tell the
11988 event loop to process them. */
11989 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
11990 mark_async_event_handler (remote_async_inferior_event_token
);
11994 serial_async (rs
->remote_desc
, NULL
, NULL
);
11995 clear_async_event_handler (remote_async_inferior_event_token
);
12000 set_remote_cmd (char *args
, int from_tty
)
12002 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
12006 show_remote_cmd (char *args
, int from_tty
)
12008 /* We can't just use cmd_show_list here, because we want to skip
12009 the redundant "show remote Z-packet" and the legacy aliases. */
12010 struct cleanup
*showlist_chain
;
12011 struct cmd_list_element
*list
= remote_show_cmdlist
;
12012 struct ui_out
*uiout
= current_uiout
;
12014 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
12015 for (; list
!= NULL
; list
= list
->next
)
12016 if (strcmp (list
->name
, "Z-packet") == 0)
12018 else if (list
->type
== not_set_cmd
)
12019 /* Alias commands are exactly like the original, except they
12020 don't have the normal type. */
12024 struct cleanup
*option_chain
12025 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
12027 ui_out_field_string (uiout
, "name", list
->name
);
12028 ui_out_text (uiout
, ": ");
12029 if (list
->type
== show_cmd
)
12030 do_show_command ((char *) NULL
, from_tty
, list
);
12032 cmd_func (list
, NULL
, from_tty
);
12033 /* Close the tuple. */
12034 do_cleanups (option_chain
);
12037 /* Close the tuple. */
12038 do_cleanups (showlist_chain
);
12042 /* Function to be called whenever a new objfile (shlib) is detected. */
12044 remote_new_objfile (struct objfile
*objfile
)
12046 struct remote_state
*rs
= get_remote_state ();
12048 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
12049 remote_check_symbols ();
12052 /* Pull all the tracepoints defined on the target and create local
12053 data structures representing them. We don't want to create real
12054 tracepoints yet, we don't want to mess up the user's existing
12058 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
12060 struct remote_state
*rs
= get_remote_state ();
12063 /* Ask for a first packet of tracepoint definition. */
12065 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12067 while (*p
&& *p
!= 'l')
12069 parse_tracepoint_definition (p
, utpp
);
12070 /* Ask for another packet of tracepoint definition. */
12072 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12079 remote_upload_trace_state_variables (struct target_ops
*self
,
12080 struct uploaded_tsv
**utsvp
)
12082 struct remote_state
*rs
= get_remote_state ();
12085 /* Ask for a first packet of variable definition. */
12087 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12089 while (*p
&& *p
!= 'l')
12091 parse_tsv_definition (p
, utsvp
);
12092 /* Ask for another packet of variable definition. */
12094 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12100 /* The "set/show range-stepping" show hook. */
12103 show_range_stepping (struct ui_file
*file
, int from_tty
,
12104 struct cmd_list_element
*c
,
12107 fprintf_filtered (file
,
12108 _("Debugger's willingness to use range stepping "
12109 "is %s.\n"), value
);
12112 /* The "set/show range-stepping" set hook. */
12115 set_range_stepping (char *ignore_args
, int from_tty
,
12116 struct cmd_list_element
*c
)
12118 struct remote_state
*rs
= get_remote_state ();
12120 /* Whene enabling, check whether range stepping is actually
12121 supported by the target, and warn if not. */
12122 if (use_range_stepping
)
12124 if (rs
->remote_desc
!= NULL
)
12126 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
12127 remote_vcont_probe (rs
);
12129 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
12130 && rs
->supports_vCont
.r
)
12134 warning (_("Range stepping is not supported by the current target"));
12139 _initialize_remote (void)
12141 struct remote_state
*rs
;
12142 struct cmd_list_element
*cmd
;
12143 const char *cmd_name
;
12145 /* architecture specific data */
12146 remote_gdbarch_data_handle
=
12147 gdbarch_data_register_post_init (init_remote_state
);
12148 remote_g_packet_data_handle
=
12149 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
12151 /* Initialize the per-target state. At the moment there is only one
12152 of these, not one per target. Only one target is active at a
12154 remote_state
= new_remote_state ();
12156 init_remote_ops ();
12157 add_target (&remote_ops
);
12159 init_extended_remote_ops ();
12160 add_target (&extended_remote_ops
);
12162 /* Hook into new objfile notification. */
12163 observer_attach_new_objfile (remote_new_objfile
);
12164 /* We're no longer interested in notification events of an inferior
12166 observer_attach_inferior_exit (discard_pending_stop_replies
);
12168 /* Set up signal handlers. */
12169 async_sigint_remote_token
=
12170 create_async_signal_handler (async_remote_interrupt
, NULL
);
12171 async_sigint_remote_twice_token
=
12172 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
12175 init_remote_threadtests ();
12178 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
12179 /* set/show remote ... */
12181 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
12182 Remote protocol specific variables\n\
12183 Configure various remote-protocol specific variables such as\n\
12184 the packets being used"),
12185 &remote_set_cmdlist
, "set remote ",
12186 0 /* allow-unknown */, &setlist
);
12187 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
12188 Remote protocol specific variables\n\
12189 Configure various remote-protocol specific variables such as\n\
12190 the packets being used"),
12191 &remote_show_cmdlist
, "show remote ",
12192 0 /* allow-unknown */, &showlist
);
12194 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
12195 Compare section data on target to the exec file.\n\
12196 Argument is a single section name (default: all loaded sections).\n\
12197 To compare only read-only loaded sections, specify the -r option."),
12200 add_cmd ("packet", class_maintenance
, packet_command
, _("\
12201 Send an arbitrary packet to a remote target.\n\
12202 maintenance packet TEXT\n\
12203 If GDB is talking to an inferior via the GDB serial protocol, then\n\
12204 this command sends the string TEXT to the inferior, and displays the\n\
12205 response packet. GDB supplies the initial `$' character, and the\n\
12206 terminating `#' character and checksum."),
12209 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
12210 Set whether to send break if interrupted."), _("\
12211 Show whether to send break if interrupted."), _("\
12212 If set, a break, instead of a cntrl-c, is sent to the remote target."),
12213 set_remotebreak
, show_remotebreak
,
12214 &setlist
, &showlist
);
12215 cmd_name
= "remotebreak";
12216 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
12217 deprecate_cmd (cmd
, "set remote interrupt-sequence");
12218 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
12219 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
12220 deprecate_cmd (cmd
, "show remote interrupt-sequence");
12222 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
12223 interrupt_sequence_modes
, &interrupt_sequence_mode
,
12225 Set interrupt sequence to remote target."), _("\
12226 Show interrupt sequence to remote target."), _("\
12227 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
12228 NULL
, show_interrupt_sequence
,
12229 &remote_set_cmdlist
,
12230 &remote_show_cmdlist
);
12232 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
12233 &interrupt_on_connect
, _("\
12234 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
12235 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
12236 If set, interrupt sequence is sent to remote target."),
12238 &remote_set_cmdlist
, &remote_show_cmdlist
);
12240 /* Install commands for configuring memory read/write packets. */
12242 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
12243 Set the maximum number of bytes per memory write packet (deprecated)."),
12245 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
12246 Show the maximum number of bytes per memory write packet (deprecated)."),
12248 add_cmd ("memory-write-packet-size", no_class
,
12249 set_memory_write_packet_size
, _("\
12250 Set the maximum number of bytes per memory-write packet.\n\
12251 Specify the number of bytes in a packet or 0 (zero) for the\n\
12252 default packet size. The actual limit is further reduced\n\
12253 dependent on the target. Specify ``fixed'' to disable the\n\
12254 further restriction and ``limit'' to enable that restriction."),
12255 &remote_set_cmdlist
);
12256 add_cmd ("memory-read-packet-size", no_class
,
12257 set_memory_read_packet_size
, _("\
12258 Set the maximum number of bytes per memory-read packet.\n\
12259 Specify the number of bytes in a packet or 0 (zero) for the\n\
12260 default packet size. The actual limit is further reduced\n\
12261 dependent on the target. Specify ``fixed'' to disable the\n\
12262 further restriction and ``limit'' to enable that restriction."),
12263 &remote_set_cmdlist
);
12264 add_cmd ("memory-write-packet-size", no_class
,
12265 show_memory_write_packet_size
,
12266 _("Show the maximum number of bytes per memory-write packet."),
12267 &remote_show_cmdlist
);
12268 add_cmd ("memory-read-packet-size", no_class
,
12269 show_memory_read_packet_size
,
12270 _("Show the maximum number of bytes per memory-read packet."),
12271 &remote_show_cmdlist
);
12273 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
12274 &remote_hw_watchpoint_limit
, _("\
12275 Set the maximum number of target hardware watchpoints."), _("\
12276 Show the maximum number of target hardware watchpoints."), _("\
12277 Specify a negative limit for unlimited."),
12278 NULL
, NULL
, /* FIXME: i18n: The maximum
12279 number of target hardware
12280 watchpoints is %s. */
12281 &remote_set_cmdlist
, &remote_show_cmdlist
);
12282 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
12283 &remote_hw_watchpoint_length_limit
, _("\
12284 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
12285 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
12286 Specify a negative limit for unlimited."),
12287 NULL
, NULL
, /* FIXME: i18n: The maximum
12288 length (in bytes) of a target
12289 hardware watchpoint is %s. */
12290 &remote_set_cmdlist
, &remote_show_cmdlist
);
12291 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
12292 &remote_hw_breakpoint_limit
, _("\
12293 Set the maximum number of target hardware breakpoints."), _("\
12294 Show the maximum number of target hardware breakpoints."), _("\
12295 Specify a negative limit for unlimited."),
12296 NULL
, NULL
, /* FIXME: i18n: The maximum
12297 number of target hardware
12298 breakpoints is %s. */
12299 &remote_set_cmdlist
, &remote_show_cmdlist
);
12301 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
12302 &remote_address_size
, _("\
12303 Set the maximum size of the address (in bits) in a memory packet."), _("\
12304 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
12306 NULL
, /* FIXME: i18n: */
12307 &setlist
, &showlist
);
12309 init_all_packet_configs ();
12311 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
12312 "X", "binary-download", 1);
12314 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
12315 "vCont", "verbose-resume", 0);
12317 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
12318 "QPassSignals", "pass-signals", 0);
12320 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
12321 "QProgramSignals", "program-signals", 0);
12323 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
12324 "qSymbol", "symbol-lookup", 0);
12326 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
12327 "P", "set-register", 1);
12329 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12330 "p", "fetch-register", 1);
12332 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12333 "Z0", "software-breakpoint", 0);
12335 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12336 "Z1", "hardware-breakpoint", 0);
12338 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12339 "Z2", "write-watchpoint", 0);
12341 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12342 "Z3", "read-watchpoint", 0);
12344 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12345 "Z4", "access-watchpoint", 0);
12347 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12348 "qXfer:auxv:read", "read-aux-vector", 0);
12350 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12351 "qXfer:features:read", "target-features", 0);
12353 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12354 "qXfer:libraries:read", "library-info", 0);
12356 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12357 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12359 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12360 "qXfer:memory-map:read", "memory-map", 0);
12362 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12363 "qXfer:spu:read", "read-spu-object", 0);
12365 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12366 "qXfer:spu:write", "write-spu-object", 0);
12368 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12369 "qXfer:osdata:read", "osdata", 0);
12371 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12372 "qXfer:threads:read", "threads", 0);
12374 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12375 "qXfer:siginfo:read", "read-siginfo-object", 0);
12377 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12378 "qXfer:siginfo:write", "write-siginfo-object", 0);
12380 add_packet_config_cmd
12381 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12382 "qXfer:traceframe-info:read", "traceframe-info", 0);
12384 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12385 "qXfer:uib:read", "unwind-info-block", 0);
12387 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12388 "qGetTLSAddr", "get-thread-local-storage-address",
12391 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12392 "qGetTIBAddr", "get-thread-information-block-address",
12395 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12396 "bc", "reverse-continue", 0);
12398 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12399 "bs", "reverse-step", 0);
12401 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12402 "qSupported", "supported-packets", 0);
12404 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12405 "qSearch:memory", "search-memory", 0);
12407 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12408 "qTStatus", "trace-status", 0);
12410 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12411 "vFile:open", "hostio-open", 0);
12413 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12414 "vFile:pread", "hostio-pread", 0);
12416 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12417 "vFile:pwrite", "hostio-pwrite", 0);
12419 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12420 "vFile:close", "hostio-close", 0);
12422 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12423 "vFile:unlink", "hostio-unlink", 0);
12425 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12426 "vFile:readlink", "hostio-readlink", 0);
12428 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
12429 "vFile:fstat", "hostio-fstat", 0);
12431 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12432 "vAttach", "attach", 0);
12434 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12437 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12438 "QStartNoAckMode", "noack", 0);
12440 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12441 "vKill", "kill", 0);
12443 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12444 "qAttached", "query-attached", 0);
12446 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12447 "ConditionalTracepoints",
12448 "conditional-tracepoints", 0);
12450 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12451 "ConditionalBreakpoints",
12452 "conditional-breakpoints", 0);
12454 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12455 "BreakpointCommands",
12456 "breakpoint-commands", 0);
12458 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12459 "FastTracepoints", "fast-tracepoints", 0);
12461 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12462 "TracepointSource", "TracepointSource", 0);
12464 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12465 "QAllow", "allow", 0);
12467 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12468 "StaticTracepoints", "static-tracepoints", 0);
12470 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12471 "InstallInTrace", "install-in-trace", 0);
12473 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12474 "qXfer:statictrace:read", "read-sdata-object", 0);
12476 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12477 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12479 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12480 "QDisableRandomization", "disable-randomization", 0);
12482 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12483 "QAgent", "agent", 0);
12485 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12486 "QTBuffer:size", "trace-buffer-size", 0);
12488 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12489 "Qbtrace:off", "disable-btrace", 0);
12491 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12492 "Qbtrace:bts", "enable-btrace", 0);
12494 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12495 "qXfer:btrace", "read-btrace", 0);
12497 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
12498 "qXfer:btrace-conf", "read-btrace-conf", 0);
12500 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
12501 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
12503 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
12504 "swbreak-feature", "swbreak-feature", 0);
12506 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
12507 "hwbreak-feature", "hwbreak-feature", 0);
12509 /* Assert that we've registered commands for all packet configs. */
12513 for (i
= 0; i
< PACKET_MAX
; i
++)
12515 /* Ideally all configs would have a command associated. Some
12516 still don't though. */
12521 case PACKET_QNonStop
:
12522 case PACKET_multiprocess_feature
:
12523 case PACKET_EnableDisableTracepoints_feature
:
12524 case PACKET_tracenz_feature
:
12525 case PACKET_DisconnectedTracing_feature
:
12526 case PACKET_augmented_libraries_svr4_read_feature
:
12528 /* Additions to this list need to be well justified:
12529 pre-existing packets are OK; new packets are not. */
12537 /* This catches both forgetting to add a config command, and
12538 forgetting to remove a packet from the exception list. */
12539 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
12543 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12544 Z sub-packet has its own set and show commands, but users may
12545 have sets to this variable in their .gdbinit files (or in their
12547 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12548 &remote_Z_packet_detect
, _("\
12549 Set use of remote protocol `Z' packets"), _("\
12550 Show use of remote protocol `Z' packets "), _("\
12551 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12553 set_remote_protocol_Z_packet_cmd
,
12554 show_remote_protocol_Z_packet_cmd
,
12555 /* FIXME: i18n: Use of remote protocol
12556 `Z' packets is %s. */
12557 &remote_set_cmdlist
, &remote_show_cmdlist
);
12559 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12560 Manipulate files on the remote system\n\
12561 Transfer files to and from the remote target system."),
12562 &remote_cmdlist
, "remote ",
12563 0 /* allow-unknown */, &cmdlist
);
12565 add_cmd ("put", class_files
, remote_put_command
,
12566 _("Copy a local file to the remote system."),
12569 add_cmd ("get", class_files
, remote_get_command
,
12570 _("Copy a remote file to the local system."),
12573 add_cmd ("delete", class_files
, remote_delete_command
,
12574 _("Delete a remote file."),
12577 remote_exec_file
= xstrdup ("");
12578 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12579 &remote_exec_file
, _("\
12580 Set the remote pathname for \"run\""), _("\
12581 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12582 &remote_set_cmdlist
, &remote_show_cmdlist
);
12584 add_setshow_boolean_cmd ("range-stepping", class_run
,
12585 &use_range_stepping
, _("\
12586 Enable or disable range stepping."), _("\
12587 Show whether target-assisted range stepping is enabled."), _("\
12588 If on, and the target supports it, when stepping a source line, GDB\n\
12589 tells the target to step the corresponding range of addresses itself instead\n\
12590 of issuing multiple single-steps. This speeds up source level\n\
12591 stepping. If off, GDB always issues single-steps, even if range\n\
12592 stepping is supported by the target. The default is on."),
12593 set_range_stepping
,
12594 show_range_stepping
,
12598 /* Eventually initialize fileio. See fileio.c */
12599 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12601 /* Take advantage of the fact that the TID field is not used, to tag
12602 special ptids with it set to != 0. */
12603 magic_null_ptid
= ptid_build (42000, -1, 1);
12604 not_sent_ptid
= ptid_build (42000, -2, 1);
12605 any_thread_ptid
= ptid_build (42000, 0, 1);
12607 target_buf_size
= 2048;
12608 target_buf
= xmalloc (target_buf_size
);