1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2014 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. */
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
47 #include "filestuff.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void async_cleanup_sigint_signal_handler (void *dummy
);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void async_handle_remote_sigint (int);
97 static void async_handle_remote_sigint_twice (int);
99 static void remote_files_info (struct target_ops
*ignore
);
101 static void remote_prepare_to_store (struct target_ops
*self
,
102 struct regcache
*regcache
);
104 static void remote_open (char *name
, int from_tty
);
106 static void extended_remote_open (char *name
, int from_tty
);
108 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
110 static void remote_close (struct target_ops
*self
);
112 static void remote_mourn (struct target_ops
*ops
);
114 static void extended_remote_restart (void);
116 static void extended_remote_mourn (struct target_ops
*);
118 static void remote_mourn_1 (struct target_ops
*);
120 static void remote_send (char **buf
, long *sizeof_buf_p
);
122 static int readchar (int timeout
);
124 static void remote_serial_write (const char *str
, int len
);
126 static void remote_kill (struct target_ops
*ops
);
128 static int remote_can_async_p (struct target_ops
*);
130 static int remote_is_async_p (struct target_ops
*);
132 static void remote_async (struct target_ops
*ops
,
133 void (*callback
) (enum inferior_event_type event_type
,
137 static void sync_remote_interrupt_twice (int signo
);
139 static void interrupt_query (void);
141 static void set_general_thread (struct ptid ptid
);
142 static void set_continue_thread (struct ptid ptid
);
144 static void get_offsets (void);
146 static void skip_frame (void);
148 static long read_frame (char **buf_p
, long *sizeof_buf
);
150 static int hexnumlen (ULONGEST num
);
152 static void init_remote_ops (void);
154 static void init_extended_remote_ops (void);
156 static void remote_stop (struct target_ops
*self
, ptid_t
);
158 static int stubhex (int ch
);
160 static int hexnumstr (char *, ULONGEST
);
162 static int hexnumnstr (char *, ULONGEST
, int);
164 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
166 static void print_packet (char *);
168 static void compare_sections_command (char *, int);
170 static void packet_command (char *, int);
172 static int stub_unpack_int (char *buff
, int fieldlength
);
174 static ptid_t
remote_current_thread (ptid_t oldptid
);
176 static void remote_find_new_threads (void);
178 static int putpkt_binary (char *buf
, int cnt
);
180 static void check_binary_download (CORE_ADDR addr
);
182 struct packet_config
;
184 static void show_packet_config_cmd (struct packet_config
*config
);
186 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
188 struct cmd_list_element
*c
,
191 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
192 static ptid_t
read_ptid (char *buf
, char **obuf
);
194 static void remote_set_permissions (struct target_ops
*self
);
197 static int remote_get_trace_status (struct target_ops
*self
,
198 struct trace_status
*ts
);
200 static int remote_upload_tracepoints (struct target_ops
*self
,
201 struct uploaded_tp
**utpp
);
203 static int remote_upload_trace_state_variables (struct target_ops
*self
,
204 struct uploaded_tsv
**utsvp
);
206 static void remote_query_supported (void);
208 static void remote_check_symbols (void);
210 void _initialize_remote (void);
213 static void stop_reply_xfree (struct stop_reply
*);
214 static void remote_parse_stop_reply (char *, struct stop_reply
*);
215 static void push_stop_reply (struct stop_reply
*);
216 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
217 static int peek_stop_reply (ptid_t ptid
);
219 static void remote_async_inferior_event_handler (gdb_client_data
);
221 static void remote_terminal_ours (struct target_ops
*self
);
223 static int remote_read_description_p (struct target_ops
*target
);
225 static void remote_console_output (char *msg
);
227 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
229 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
233 static struct cmd_list_element
*remote_cmdlist
;
235 /* For "set remote" and "show remote". */
237 static struct cmd_list_element
*remote_set_cmdlist
;
238 static struct cmd_list_element
*remote_show_cmdlist
;
240 /* Stub vCont actions support.
242 Each field is a boolean flag indicating whether the stub reports
243 support for the corresponding action. */
245 struct vCont_action_support
254 /* Controls whether GDB is willing to use range stepping. */
256 static int use_range_stepping
= 1;
258 #define OPAQUETHREADBYTES 8
260 /* a 64 bit opaque identifier */
261 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
263 /* About this many threadisds fit in a packet. */
265 #define MAXTHREADLISTRESULTS 32
267 /* Description of the remote protocol state for the currently
268 connected target. This is per-target state, and independent of the
269 selected architecture. */
273 /* A buffer to use for incoming packets, and its current size. The
274 buffer is grown dynamically for larger incoming packets.
275 Outgoing packets may also be constructed in this buffer.
276 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
277 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
282 /* True if we're going through initial connection setup (finding out
283 about the remote side's threads, relocating symbols, etc.). */
286 /* If we negotiated packet size explicitly (and thus can bypass
287 heuristics for the largest packet size that will not overflow
288 a buffer in the stub), this will be set to that packet size.
289 Otherwise zero, meaning to use the guessed size. */
290 long explicit_packet_size
;
292 /* remote_wait is normally called when the target is running and
293 waits for a stop reply packet. But sometimes we need to call it
294 when the target is already stopped. We can send a "?" packet
295 and have remote_wait read the response. Or, if we already have
296 the response, we can stash it in BUF and tell remote_wait to
297 skip calling getpkt. This flag is set when BUF contains a
298 stop reply packet and the target is not waiting. */
299 int cached_wait_status
;
301 /* True, if in no ack mode. That is, neither GDB nor the stub will
302 expect acks from each other. The connection is assumed to be
306 /* True if we're connected in extended remote mode. */
309 /* True if we resumed the target and we're waiting for the target to
310 stop. In the mean time, we can't start another command/query.
311 The remote server wouldn't be ready to process it, so we'd
312 timeout waiting for a reply that would never come and eventually
313 we'd close the connection. This can happen in asynchronous mode
314 because we allow GDB commands while the target is running. */
315 int waiting_for_stop_reply
;
317 /* The status of the stub support for the various vCont actions. */
318 struct vCont_action_support supports_vCont
;
320 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
321 responded to that. */
324 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
325 remote_open knows that we don't have a file open when the program
327 struct serial
*remote_desc
;
329 /* These are the threads which we last sent to the remote system. The
330 TID member will be -1 for all or -2 for not sent yet. */
331 ptid_t general_thread
;
332 ptid_t continue_thread
;
334 /* This is the traceframe which we last selected on the remote system.
335 It will be -1 if no traceframe is selected. */
336 int remote_traceframe_number
;
338 char *last_pass_packet
;
340 /* The last QProgramSignals packet sent to the target. We bypass
341 sending a new program signals list down to the target if the new
342 packet is exactly the same as the last we sent. IOW, we only let
343 the target know about program signals list changes. */
344 char *last_program_signals_packet
;
346 enum gdb_signal last_sent_signal
;
350 char *finished_object
;
351 char *finished_annex
;
352 ULONGEST finished_offset
;
354 /* Should we try the 'ThreadInfo' query packet?
356 This variable (NOT available to the user: auto-detect only!)
357 determines whether GDB will use the new, simpler "ThreadInfo"
358 query or the older, more complex syntax for thread queries.
359 This is an auto-detect variable (set to true at each connect,
360 and set to false when the target fails to recognize it). */
361 int use_threadinfo_query
;
362 int use_threadextra_query
;
364 void (*async_client_callback
) (enum inferior_event_type event_type
,
366 void *async_client_context
;
368 /* This is set to the data address of the access causing the target
369 to stop for a watchpoint. */
370 CORE_ADDR remote_watch_data_address
;
372 /* This is non-zero if target stopped for a watchpoint. */
373 int remote_stopped_by_watchpoint_p
;
375 threadref echo_nextthread
;
376 threadref nextthread
;
377 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
379 /* The state of remote notification. */
380 struct remote_notif_state
*notif_state
;
383 /* Private data that we'll store in (struct thread_info)->private. */
384 struct private_thread_info
391 free_private_thread_info (struct private_thread_info
*info
)
397 /* This data could be associated with a target, but we do not always
398 have access to the current target when we need it, so for now it is
399 static. This will be fine for as long as only one target is in use
401 static struct remote_state
*remote_state
;
403 static struct remote_state
*
404 get_remote_state_raw (void)
409 /* Allocate a new struct remote_state with xmalloc, initialize it, and
412 static struct remote_state
*
413 new_remote_state (void)
415 struct remote_state
*result
= XCNEW (struct remote_state
);
417 /* The default buffer size is unimportant; it will be expanded
418 whenever a larger buffer is needed. */
419 result
->buf_size
= 400;
420 result
->buf
= xmalloc (result
->buf_size
);
421 result
->remote_traceframe_number
= -1;
422 result
->last_sent_signal
= GDB_SIGNAL_0
;
427 /* Description of the remote protocol for a given architecture. */
431 long offset
; /* Offset into G packet. */
432 long regnum
; /* GDB's internal register number. */
433 LONGEST pnum
; /* Remote protocol register number. */
434 int in_g_packet
; /* Always part of G packet. */
435 /* long size in bytes; == register_size (target_gdbarch (), regnum);
437 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
441 struct remote_arch_state
443 /* Description of the remote protocol registers. */
444 long sizeof_g_packet
;
446 /* Description of the remote protocol registers indexed by REGNUM
447 (making an array gdbarch_num_regs in size). */
448 struct packet_reg
*regs
;
450 /* This is the size (in chars) of the first response to the ``g''
451 packet. It is used as a heuristic when determining the maximum
452 size of memory-read and memory-write packets. A target will
453 typically only reserve a buffer large enough to hold the ``g''
454 packet. The size does not include packet overhead (headers and
456 long actual_register_packet_size
;
458 /* This is the maximum size (in chars) of a non read/write packet.
459 It is also used as a cap on the size of read/write packets. */
460 long remote_packet_size
;
463 /* Utility: generate error from an incoming stub packet. */
465 trace_error (char *buf
)
468 return; /* not an error msg */
471 case '1': /* malformed packet error */
472 if (*++buf
== '0') /* general case: */
473 error (_("remote.c: error in outgoing packet."));
475 error (_("remote.c: error in outgoing packet at field #%ld."),
476 strtol (buf
, NULL
, 16));
478 error (_("Target returns error code '%s'."), buf
);
482 /* Utility: wait for reply from stub, while accepting "O" packets. */
484 remote_get_noisy_reply (char **buf_p
,
487 do /* Loop on reply from remote stub. */
491 QUIT
; /* Allow user to bail out with ^C. */
492 getpkt (buf_p
, sizeof_buf
, 0);
496 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
499 CORE_ADDR from
, to
, org_to
;
501 int adjusted_size
= 0;
502 volatile struct gdb_exception ex
;
504 p
= buf
+ strlen ("qRelocInsn:");
505 pp
= unpack_varlen_hex (p
, &ul
);
507 error (_("invalid qRelocInsn packet: %s"), buf
);
511 unpack_varlen_hex (p
, &ul
);
516 TRY_CATCH (ex
, RETURN_MASK_ALL
)
518 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
522 adjusted_size
= to
- org_to
;
524 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
527 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
529 /* Propagate memory errors silently back to the target.
530 The stub may have limited the range of addresses we
531 can write to, for example. */
536 /* Something unexpectedly bad happened. Be verbose so
537 we can tell what, and propagate the error back to the
538 stub, so it doesn't get stuck waiting for a
540 exception_fprintf (gdb_stderr
, ex
,
541 _("warning: relocating instruction: "));
545 else if (buf
[0] == 'O' && buf
[1] != 'K')
546 remote_console_output (buf
+ 1); /* 'O' message from stub */
548 return buf
; /* Here's the actual reply. */
553 /* Handle for retreving the remote protocol data from gdbarch. */
554 static struct gdbarch_data
*remote_gdbarch_data_handle
;
556 static struct remote_arch_state
*
557 get_remote_arch_state (void)
559 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
562 /* Fetch the global remote target state. */
564 static struct remote_state
*
565 get_remote_state (void)
567 /* Make sure that the remote architecture state has been
568 initialized, because doing so might reallocate rs->buf. Any
569 function which calls getpkt also needs to be mindful of changes
570 to rs->buf, but this call limits the number of places which run
572 get_remote_arch_state ();
574 return get_remote_state_raw ();
578 compare_pnums (const void *lhs_
, const void *rhs_
)
580 const struct packet_reg
* const *lhs
= lhs_
;
581 const struct packet_reg
* const *rhs
= rhs_
;
583 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
585 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
592 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
594 int regnum
, num_remote_regs
, offset
;
595 struct packet_reg
**remote_regs
;
597 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
599 struct packet_reg
*r
= ®s
[regnum
];
601 if (register_size (gdbarch
, regnum
) == 0)
602 /* Do not try to fetch zero-sized (placeholder) registers. */
605 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
610 /* Define the g/G packet format as the contents of each register
611 with a remote protocol number, in order of ascending protocol
614 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
615 * sizeof (struct packet_reg
*));
616 for (num_remote_regs
= 0, regnum
= 0;
617 regnum
< gdbarch_num_regs (gdbarch
);
619 if (regs
[regnum
].pnum
!= -1)
620 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
622 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
625 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
627 remote_regs
[regnum
]->in_g_packet
= 1;
628 remote_regs
[regnum
]->offset
= offset
;
629 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
635 /* Given the architecture described by GDBARCH, return the remote
636 protocol register's number and the register's offset in the g/G
637 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
638 If the target does not have a mapping for REGNUM, return false,
639 otherwise, return true. */
642 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
643 int *pnum
, int *poffset
)
646 struct packet_reg
*regs
;
647 struct cleanup
*old_chain
;
649 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
651 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
652 old_chain
= make_cleanup (xfree
, regs
);
654 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
656 *pnum
= regs
[regnum
].pnum
;
657 *poffset
= regs
[regnum
].offset
;
659 do_cleanups (old_chain
);
665 init_remote_state (struct gdbarch
*gdbarch
)
667 struct remote_state
*rs
= get_remote_state_raw ();
668 struct remote_arch_state
*rsa
;
670 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
672 /* Use the architecture to build a regnum<->pnum table, which will be
673 1:1 unless a feature set specifies otherwise. */
674 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
675 gdbarch_num_regs (gdbarch
),
678 /* Record the maximum possible size of the g packet - it may turn out
680 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
682 /* Default maximum number of characters in a packet body. Many
683 remote stubs have a hardwired buffer size of 400 bytes
684 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
685 as the maximum packet-size to ensure that the packet and an extra
686 NUL character can always fit in the buffer. This stops GDB
687 trashing stubs that try to squeeze an extra NUL into what is
688 already a full buffer (As of 1999-12-04 that was most stubs). */
689 rsa
->remote_packet_size
= 400 - 1;
691 /* This one is filled in when a ``g'' packet is received. */
692 rsa
->actual_register_packet_size
= 0;
694 /* Should rsa->sizeof_g_packet needs more space than the
695 default, adjust the size accordingly. Remember that each byte is
696 encoded as two characters. 32 is the overhead for the packet
697 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
698 (``$NN:G...#NN'') is a better guess, the below has been padded a
700 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
701 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
703 /* Make sure that the packet buffer is plenty big enough for
704 this architecture. */
705 if (rs
->buf_size
< rsa
->remote_packet_size
)
707 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
708 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
714 /* Return the current allowed size of a remote packet. This is
715 inferred from the current architecture, and should be used to
716 limit the length of outgoing packets. */
718 get_remote_packet_size (void)
720 struct remote_state
*rs
= get_remote_state ();
721 struct remote_arch_state
*rsa
= get_remote_arch_state ();
723 if (rs
->explicit_packet_size
)
724 return rs
->explicit_packet_size
;
726 return rsa
->remote_packet_size
;
729 static struct packet_reg
*
730 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
732 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
736 struct packet_reg
*r
= &rsa
->regs
[regnum
];
738 gdb_assert (r
->regnum
== regnum
);
743 static struct packet_reg
*
744 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
748 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
750 struct packet_reg
*r
= &rsa
->regs
[i
];
758 static struct target_ops remote_ops
;
760 static struct target_ops extended_remote_ops
;
762 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
763 ``forever'' still use the normal timeout mechanism. This is
764 currently used by the ASYNC code to guarentee that target reads
765 during the initial connect always time-out. Once getpkt has been
766 modified to return a timeout indication and, in turn
767 remote_wait()/wait_for_inferior() have gained a timeout parameter
769 static int wait_forever_enabled_p
= 1;
771 /* Allow the user to specify what sequence to send to the remote
772 when he requests a program interruption: Although ^C is usually
773 what remote systems expect (this is the default, here), it is
774 sometimes preferable to send a break. On other systems such
775 as the Linux kernel, a break followed by g, which is Magic SysRq g
776 is required in order to interrupt the execution. */
777 const char interrupt_sequence_control_c
[] = "Ctrl-C";
778 const char interrupt_sequence_break
[] = "BREAK";
779 const char interrupt_sequence_break_g
[] = "BREAK-g";
780 static const char *const interrupt_sequence_modes
[] =
782 interrupt_sequence_control_c
,
783 interrupt_sequence_break
,
784 interrupt_sequence_break_g
,
787 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
790 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
791 struct cmd_list_element
*c
,
794 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
795 fprintf_filtered (file
,
796 _("Send the ASCII ETX character (Ctrl-c) "
797 "to the remote target to interrupt the "
798 "execution of the program.\n"));
799 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
800 fprintf_filtered (file
,
801 _("send a break signal to the remote target "
802 "to interrupt the execution of the program.\n"));
803 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
804 fprintf_filtered (file
,
805 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
806 "the remote target to interrupt the execution "
807 "of Linux kernel.\n"));
809 internal_error (__FILE__
, __LINE__
,
810 _("Invalid value for interrupt_sequence_mode: %s."),
811 interrupt_sequence_mode
);
814 /* This boolean variable specifies whether interrupt_sequence is sent
815 to the remote target when gdb connects to it.
816 This is mostly needed when you debug the Linux kernel: The Linux kernel
817 expects BREAK g which is Magic SysRq g for connecting gdb. */
818 static int interrupt_on_connect
= 0;
820 /* This variable is used to implement the "set/show remotebreak" commands.
821 Since these commands are now deprecated in favor of "set/show remote
822 interrupt-sequence", it no longer has any effect on the code. */
823 static int remote_break
;
826 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
829 interrupt_sequence_mode
= interrupt_sequence_break
;
831 interrupt_sequence_mode
= interrupt_sequence_control_c
;
835 show_remotebreak (struct ui_file
*file
, int from_tty
,
836 struct cmd_list_element
*c
,
841 /* This variable sets the number of bits in an address that are to be
842 sent in a memory ("M" or "m") packet. Normally, after stripping
843 leading zeros, the entire address would be sent. This variable
844 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
845 initial implementation of remote.c restricted the address sent in
846 memory packets to ``host::sizeof long'' bytes - (typically 32
847 bits). Consequently, for 64 bit targets, the upper 32 bits of an
848 address was never sent. Since fixing this bug may cause a break in
849 some remote targets this variable is principly provided to
850 facilitate backward compatibility. */
852 static unsigned int remote_address_size
;
854 /* Temporary to track who currently owns the terminal. See
855 remote_terminal_* for more details. */
857 static int remote_async_terminal_ours_p
;
859 /* The executable file to use for "run" on the remote side. */
861 static char *remote_exec_file
= "";
864 /* User configurable variables for the number of characters in a
865 memory read/write packet. MIN (rsa->remote_packet_size,
866 rsa->sizeof_g_packet) is the default. Some targets need smaller
867 values (fifo overruns, et.al.) and some users need larger values
868 (speed up transfers). The variables ``preferred_*'' (the user
869 request), ``current_*'' (what was actually set) and ``forced_*''
870 (Positive - a soft limit, negative - a hard limit). */
872 struct memory_packet_config
879 /* Compute the current size of a read/write packet. Since this makes
880 use of ``actual_register_packet_size'' the computation is dynamic. */
883 get_memory_packet_size (struct memory_packet_config
*config
)
885 struct remote_state
*rs
= get_remote_state ();
886 struct remote_arch_state
*rsa
= get_remote_arch_state ();
888 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
889 law?) that some hosts don't cope very well with large alloca()
890 calls. Eventually the alloca() code will be replaced by calls to
891 xmalloc() and make_cleanups() allowing this restriction to either
892 be lifted or removed. */
893 #ifndef MAX_REMOTE_PACKET_SIZE
894 #define MAX_REMOTE_PACKET_SIZE 16384
896 /* NOTE: 20 ensures we can write at least one byte. */
897 #ifndef MIN_REMOTE_PACKET_SIZE
898 #define MIN_REMOTE_PACKET_SIZE 20
903 if (config
->size
<= 0)
904 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
906 what_they_get
= config
->size
;
910 what_they_get
= get_remote_packet_size ();
911 /* Limit the packet to the size specified by the user. */
913 && what_they_get
> config
->size
)
914 what_they_get
= config
->size
;
916 /* Limit it to the size of the targets ``g'' response unless we have
917 permission from the stub to use a larger packet size. */
918 if (rs
->explicit_packet_size
== 0
919 && rsa
->actual_register_packet_size
> 0
920 && what_they_get
> rsa
->actual_register_packet_size
)
921 what_they_get
= rsa
->actual_register_packet_size
;
923 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
924 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
925 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
926 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
928 /* Make sure there is room in the global buffer for this packet
929 (including its trailing NUL byte). */
930 if (rs
->buf_size
< what_they_get
+ 1)
932 rs
->buf_size
= 2 * what_they_get
;
933 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
936 return what_they_get
;
939 /* Update the size of a read/write packet. If they user wants
940 something really big then do a sanity check. */
943 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
945 int fixed_p
= config
->fixed_p
;
946 long size
= config
->size
;
949 error (_("Argument required (integer, `fixed' or `limited')."));
950 else if (strcmp (args
, "hard") == 0
951 || strcmp (args
, "fixed") == 0)
953 else if (strcmp (args
, "soft") == 0
954 || strcmp (args
, "limit") == 0)
960 size
= strtoul (args
, &end
, 0);
962 error (_("Invalid %s (bad syntax)."), config
->name
);
964 /* Instead of explicitly capping the size of a packet to
965 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
966 instead allowed to set the size to something arbitrarily
968 if (size
> MAX_REMOTE_PACKET_SIZE
)
969 error (_("Invalid %s (too large)."), config
->name
);
973 if (fixed_p
&& !config
->fixed_p
)
975 if (! query (_("The target may not be able to correctly handle a %s\n"
976 "of %ld bytes. Change the packet size? "),
978 error (_("Packet size not changed."));
980 /* Update the config. */
981 config
->fixed_p
= fixed_p
;
986 show_memory_packet_size (struct memory_packet_config
*config
)
988 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
990 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
991 get_memory_packet_size (config
));
993 printf_filtered (_("Packets are limited to %ld bytes.\n"),
994 get_memory_packet_size (config
));
997 static struct memory_packet_config memory_write_packet_config
=
999 "memory-write-packet-size",
1003 set_memory_write_packet_size (char *args
, int from_tty
)
1005 set_memory_packet_size (args
, &memory_write_packet_config
);
1009 show_memory_write_packet_size (char *args
, int from_tty
)
1011 show_memory_packet_size (&memory_write_packet_config
);
1015 get_memory_write_packet_size (void)
1017 return get_memory_packet_size (&memory_write_packet_config
);
1020 static struct memory_packet_config memory_read_packet_config
=
1022 "memory-read-packet-size",
1026 set_memory_read_packet_size (char *args
, int from_tty
)
1028 set_memory_packet_size (args
, &memory_read_packet_config
);
1032 show_memory_read_packet_size (char *args
, int from_tty
)
1034 show_memory_packet_size (&memory_read_packet_config
);
1038 get_memory_read_packet_size (void)
1040 long size
= get_memory_packet_size (&memory_read_packet_config
);
1042 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1043 extra buffer size argument before the memory read size can be
1044 increased beyond this. */
1045 if (size
> get_remote_packet_size ())
1046 size
= get_remote_packet_size ();
1051 /* Generic configuration support for packets the stub optionally
1052 supports. Allows the user to specify the use of the packet as well
1053 as allowing GDB to auto-detect support in the remote stub. */
1057 PACKET_SUPPORT_UNKNOWN
= 0,
1062 struct packet_config
1067 /* If auto, GDB auto-detects support for this packet or feature,
1068 either through qSupported, or by trying the packet and looking
1069 at the response. If true, GDB assumes the target supports this
1070 packet. If false, the packet is disabled. Configs that don't
1071 have an associated command always have this set to auto. */
1072 enum auto_boolean detect
;
1074 /* Does the target support this packet? */
1075 enum packet_support support
;
1078 /* Analyze a packet's return value and update the packet config
1088 static enum packet_support
packet_config_support (struct packet_config
*config
);
1089 static enum packet_support
packet_support (int packet
);
1092 show_packet_config_cmd (struct packet_config
*config
)
1094 char *support
= "internal-error";
1096 switch (packet_config_support (config
))
1099 support
= "enabled";
1101 case PACKET_DISABLE
:
1102 support
= "disabled";
1104 case PACKET_SUPPORT_UNKNOWN
:
1105 support
= "unknown";
1108 switch (config
->detect
)
1110 case AUTO_BOOLEAN_AUTO
:
1111 printf_filtered (_("Support for the `%s' packet "
1112 "is auto-detected, currently %s.\n"),
1113 config
->name
, support
);
1115 case AUTO_BOOLEAN_TRUE
:
1116 case AUTO_BOOLEAN_FALSE
:
1117 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1118 config
->name
, support
);
1124 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1125 const char *title
, int legacy
)
1131 config
->name
= name
;
1132 config
->title
= title
;
1133 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1135 show_doc
= xstrprintf ("Show current use of remote "
1136 "protocol `%s' (%s) packet",
1138 /* set/show TITLE-packet {auto,on,off} */
1139 cmd_name
= xstrprintf ("%s-packet", title
);
1140 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1141 &config
->detect
, set_doc
,
1142 show_doc
, NULL
, /* help_doc */
1144 show_remote_protocol_packet_cmd
,
1145 &remote_set_cmdlist
, &remote_show_cmdlist
);
1146 /* The command code copies the documentation strings. */
1149 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1154 legacy_name
= xstrprintf ("%s-packet", name
);
1155 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1156 &remote_set_cmdlist
);
1157 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1158 &remote_show_cmdlist
);
1162 static enum packet_result
1163 packet_check_result (const char *buf
)
1167 /* The stub recognized the packet request. Check that the
1168 operation succeeded. */
1170 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1172 /* "Enn" - definitly an error. */
1173 return PACKET_ERROR
;
1175 /* Always treat "E." as an error. This will be used for
1176 more verbose error messages, such as E.memtypes. */
1177 if (buf
[0] == 'E' && buf
[1] == '.')
1178 return PACKET_ERROR
;
1180 /* The packet may or may not be OK. Just assume it is. */
1184 /* The stub does not support the packet. */
1185 return PACKET_UNKNOWN
;
1188 static enum packet_result
1189 packet_ok (const char *buf
, struct packet_config
*config
)
1191 enum packet_result result
;
1193 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1194 && config
->support
== PACKET_DISABLE
)
1195 internal_error (__FILE__
, __LINE__
,
1196 _("packet_ok: attempt to use a disabled packet"));
1198 result
= packet_check_result (buf
);
1203 /* The stub recognized the packet request. */
1204 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1207 fprintf_unfiltered (gdb_stdlog
,
1208 "Packet %s (%s) is supported\n",
1209 config
->name
, config
->title
);
1210 config
->support
= PACKET_ENABLE
;
1213 case PACKET_UNKNOWN
:
1214 /* The stub does not support the packet. */
1215 if (config
->detect
== AUTO_BOOLEAN_AUTO
1216 && config
->support
== PACKET_ENABLE
)
1218 /* If the stub previously indicated that the packet was
1219 supported then there is a protocol error. */
1220 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1221 config
->name
, config
->title
);
1223 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1225 /* The user set it wrong. */
1226 error (_("Enabled packet %s (%s) not recognized by stub"),
1227 config
->name
, config
->title
);
1231 fprintf_unfiltered (gdb_stdlog
,
1232 "Packet %s (%s) is NOT supported\n",
1233 config
->name
, config
->title
);
1234 config
->support
= PACKET_DISABLE
;
1254 PACKET_vFile_pwrite
,
1256 PACKET_vFile_unlink
,
1257 PACKET_vFile_readlink
,
1259 PACKET_qXfer_features
,
1260 PACKET_qXfer_libraries
,
1261 PACKET_qXfer_libraries_svr4
,
1262 PACKET_qXfer_memory_map
,
1263 PACKET_qXfer_spu_read
,
1264 PACKET_qXfer_spu_write
,
1265 PACKET_qXfer_osdata
,
1266 PACKET_qXfer_threads
,
1267 PACKET_qXfer_statictrace_read
,
1268 PACKET_qXfer_traceframe_info
,
1274 PACKET_QPassSignals
,
1275 PACKET_QProgramSignals
,
1277 PACKET_qSearch_memory
,
1280 PACKET_QStartNoAckMode
,
1282 PACKET_qXfer_siginfo_read
,
1283 PACKET_qXfer_siginfo_write
,
1286 /* Support for conditional tracepoints. */
1287 PACKET_ConditionalTracepoints
,
1289 /* Support for target-side breakpoint conditions. */
1290 PACKET_ConditionalBreakpoints
,
1292 /* Support for target-side breakpoint commands. */
1293 PACKET_BreakpointCommands
,
1295 /* Support for fast tracepoints. */
1296 PACKET_FastTracepoints
,
1298 /* Support for static tracepoints. */
1299 PACKET_StaticTracepoints
,
1301 /* Support for installing tracepoints while a trace experiment is
1303 PACKET_InstallInTrace
,
1307 PACKET_TracepointSource
,
1310 PACKET_QDisableRandomization
,
1312 PACKET_QTBuffer_size
,
1315 PACKET_qXfer_btrace
,
1317 /* Support for the QNonStop packet. */
1320 /* Support for multi-process extensions. */
1321 PACKET_multiprocess_feature
,
1323 /* Support for enabling and disabling tracepoints while a trace
1324 experiment is running. */
1325 PACKET_EnableDisableTracepoints_feature
,
1327 /* Support for collecting strings using the tracenz bytecode. */
1328 PACKET_tracenz_feature
,
1330 /* Support for continuing to run a trace experiment while GDB is
1332 PACKET_DisconnectedTracing_feature
,
1334 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1335 PACKET_augmented_libraries_svr4_read_feature
,
1340 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1342 /* Returns whether a given packet or feature is supported. This takes
1343 into account the state of the corresponding "set remote foo-packet"
1344 command, which may be used to bypass auto-detection. */
1346 static enum packet_support
1347 packet_config_support (struct packet_config
*config
)
1349 switch (config
->detect
)
1351 case AUTO_BOOLEAN_TRUE
:
1352 return PACKET_ENABLE
;
1353 case AUTO_BOOLEAN_FALSE
:
1354 return PACKET_DISABLE
;
1355 case AUTO_BOOLEAN_AUTO
:
1356 return config
->support
;
1358 gdb_assert_not_reached (_("bad switch"));
1362 /* Same as packet_config_support, but takes the packet's enum value as
1365 static enum packet_support
1366 packet_support (int packet
)
1368 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1370 return packet_config_support (config
);
1374 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1375 struct cmd_list_element
*c
,
1378 struct packet_config
*packet
;
1380 for (packet
= remote_protocol_packets
;
1381 packet
< &remote_protocol_packets
[PACKET_MAX
];
1384 if (&packet
->detect
== c
->var
)
1386 show_packet_config_cmd (packet
);
1390 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1394 /* Should we try one of the 'Z' requests? */
1398 Z_PACKET_SOFTWARE_BP
,
1399 Z_PACKET_HARDWARE_BP
,
1406 /* For compatibility with older distributions. Provide a ``set remote
1407 Z-packet ...'' command that updates all the Z packet types. */
1409 static enum auto_boolean remote_Z_packet_detect
;
1412 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1413 struct cmd_list_element
*c
)
1417 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1418 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1422 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1423 struct cmd_list_element
*c
,
1428 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1430 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1434 /* Returns true if the multi-process extensions are in effect. */
1437 remote_multi_process_p (struct remote_state
*rs
)
1439 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1442 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1443 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1444 static struct async_signal_handler
*async_sigint_remote_token
;
1447 /* Asynchronous signal handle registered as event loop source for
1448 when we have pending events ready to be passed to the core. */
1450 static struct async_event_handler
*remote_async_inferior_event_token
;
1454 static ptid_t magic_null_ptid
;
1455 static ptid_t not_sent_ptid
;
1456 static ptid_t any_thread_ptid
;
1458 /* Find out if the stub attached to PID (and hence GDB should offer to
1459 detach instead of killing it when bailing out). */
1462 remote_query_attached (int pid
)
1464 struct remote_state
*rs
= get_remote_state ();
1465 size_t size
= get_remote_packet_size ();
1467 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1470 if (remote_multi_process_p (rs
))
1471 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1473 xsnprintf (rs
->buf
, size
, "qAttached");
1476 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1478 switch (packet_ok (rs
->buf
,
1479 &remote_protocol_packets
[PACKET_qAttached
]))
1482 if (strcmp (rs
->buf
, "1") == 0)
1486 warning (_("Remote failure reply: %s"), rs
->buf
);
1488 case PACKET_UNKNOWN
:
1495 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1496 has been invented by GDB, instead of reported by the target. Since
1497 we can be connected to a remote system before before knowing about
1498 any inferior, mark the target with execution when we find the first
1499 inferior. If ATTACHED is 1, then we had just attached to this
1500 inferior. If it is 0, then we just created this inferior. If it
1501 is -1, then try querying the remote stub to find out if it had
1502 attached to the inferior or not. */
1504 static struct inferior
*
1505 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1507 struct inferior
*inf
;
1509 /* Check whether this process we're learning about is to be
1510 considered attached, or if is to be considered to have been
1511 spawned by the stub. */
1513 attached
= remote_query_attached (pid
);
1515 if (gdbarch_has_global_solist (target_gdbarch ()))
1517 /* If the target shares code across all inferiors, then every
1518 attach adds a new inferior. */
1519 inf
= add_inferior (pid
);
1521 /* ... and every inferior is bound to the same program space.
1522 However, each inferior may still have its own address
1524 inf
->aspace
= maybe_new_address_space ();
1525 inf
->pspace
= current_program_space
;
1529 /* In the traditional debugging scenario, there's a 1-1 match
1530 between program/address spaces. We simply bind the inferior
1531 to the program space's address space. */
1532 inf
= current_inferior ();
1533 inferior_appeared (inf
, pid
);
1536 inf
->attach_flag
= attached
;
1537 inf
->fake_pid_p
= fake_pid_p
;
1542 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1543 according to RUNNING. */
1546 remote_add_thread (ptid_t ptid
, int running
)
1548 struct remote_state
*rs
= get_remote_state ();
1550 /* GDB historically didn't pull threads in the initial connection
1551 setup. If the remote target doesn't even have a concept of
1552 threads (e.g., a bare-metal target), even if internally we
1553 consider that a single-threaded target, mentioning a new thread
1554 might be confusing to the user. Be silent then, preserving the
1555 age old behavior. */
1556 if (rs
->starting_up
)
1557 add_thread_silent (ptid
);
1561 set_executing (ptid
, running
);
1562 set_running (ptid
, running
);
1565 /* Come here when we learn about a thread id from the remote target.
1566 It may be the first time we hear about such thread, so take the
1567 opportunity to add it to GDB's thread list. In case this is the
1568 first time we're noticing its corresponding inferior, add it to
1569 GDB's inferior list as well. */
1572 remote_notice_new_inferior (ptid_t currthread
, int running
)
1574 /* If this is a new thread, add it to GDB's thread list.
1575 If we leave it up to WFI to do this, bad things will happen. */
1577 if (in_thread_list (currthread
) && is_exited (currthread
))
1579 /* We're seeing an event on a thread id we knew had exited.
1580 This has to be a new thread reusing the old id. Add it. */
1581 remote_add_thread (currthread
, running
);
1585 if (!in_thread_list (currthread
))
1587 struct inferior
*inf
= NULL
;
1588 int pid
= ptid_get_pid (currthread
);
1590 if (ptid_is_pid (inferior_ptid
)
1591 && pid
== ptid_get_pid (inferior_ptid
))
1593 /* inferior_ptid has no thread member yet. This can happen
1594 with the vAttach -> remote_wait,"TAAthread:" path if the
1595 stub doesn't support qC. This is the first stop reported
1596 after an attach, so this is the main thread. Update the
1597 ptid in the thread list. */
1598 if (in_thread_list (pid_to_ptid (pid
)))
1599 thread_change_ptid (inferior_ptid
, currthread
);
1602 remote_add_thread (currthread
, running
);
1603 inferior_ptid
= currthread
;
1608 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1610 /* inferior_ptid is not set yet. This can happen with the
1611 vRun -> remote_wait,"TAAthread:" path if the stub
1612 doesn't support qC. This is the first stop reported
1613 after an attach, so this is the main thread. Update the
1614 ptid in the thread list. */
1615 thread_change_ptid (inferior_ptid
, currthread
);
1619 /* When connecting to a target remote, or to a target
1620 extended-remote which already was debugging an inferior, we
1621 may not know about it yet. Add it before adding its child
1622 thread, so notifications are emitted in a sensible order. */
1623 if (!in_inferior_list (ptid_get_pid (currthread
)))
1625 struct remote_state
*rs
= get_remote_state ();
1626 int fake_pid_p
= !remote_multi_process_p (rs
);
1628 inf
= remote_add_inferior (fake_pid_p
,
1629 ptid_get_pid (currthread
), -1);
1632 /* This is really a new thread. Add it. */
1633 remote_add_thread (currthread
, running
);
1635 /* If we found a new inferior, let the common code do whatever
1636 it needs to with it (e.g., read shared libraries, insert
1637 breakpoints), unless we're just setting up an all-stop
1641 struct remote_state
*rs
= get_remote_state ();
1643 if (non_stop
|| !rs
->starting_up
)
1644 notice_new_inferior (currthread
, running
, 0);
1649 /* Return the private thread data, creating it if necessary. */
1651 static struct private_thread_info
*
1652 demand_private_info (ptid_t ptid
)
1654 struct thread_info
*info
= find_thread_ptid (ptid
);
1660 info
->private = xmalloc (sizeof (*(info
->private)));
1661 info
->private_dtor
= free_private_thread_info
;
1662 info
->private->core
= -1;
1663 info
->private->extra
= 0;
1666 return info
->private;
1669 /* Call this function as a result of
1670 1) A halt indication (T packet) containing a thread id
1671 2) A direct query of currthread
1672 3) Successful execution of set thread */
1675 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1677 rs
->general_thread
= currthread
;
1680 /* If 'QPassSignals' is supported, tell the remote stub what signals
1681 it can simply pass through to the inferior without reporting. */
1684 remote_pass_signals (struct target_ops
*self
,
1685 int numsigs
, unsigned char *pass_signals
)
1687 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1689 char *pass_packet
, *p
;
1691 struct remote_state
*rs
= get_remote_state ();
1693 gdb_assert (numsigs
< 256);
1694 for (i
= 0; i
< numsigs
; i
++)
1696 if (pass_signals
[i
])
1699 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1700 strcpy (pass_packet
, "QPassSignals:");
1701 p
= pass_packet
+ strlen (pass_packet
);
1702 for (i
= 0; i
< numsigs
; i
++)
1704 if (pass_signals
[i
])
1707 *p
++ = tohex (i
>> 4);
1708 *p
++ = tohex (i
& 15);
1717 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1719 putpkt (pass_packet
);
1720 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1721 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1722 if (rs
->last_pass_packet
)
1723 xfree (rs
->last_pass_packet
);
1724 rs
->last_pass_packet
= pass_packet
;
1727 xfree (pass_packet
);
1731 /* If 'QProgramSignals' is supported, tell the remote stub what
1732 signals it should pass through to the inferior when detaching. */
1735 remote_program_signals (struct target_ops
*self
,
1736 int numsigs
, unsigned char *signals
)
1738 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
1742 struct remote_state
*rs
= get_remote_state ();
1744 gdb_assert (numsigs
< 256);
1745 for (i
= 0; i
< numsigs
; i
++)
1750 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1751 strcpy (packet
, "QProgramSignals:");
1752 p
= packet
+ strlen (packet
);
1753 for (i
= 0; i
< numsigs
; i
++)
1755 if (signal_pass_state (i
))
1758 *p
++ = tohex (i
>> 4);
1759 *p
++ = tohex (i
& 15);
1768 if (!rs
->last_program_signals_packet
1769 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1772 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1773 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1774 xfree (rs
->last_program_signals_packet
);
1775 rs
->last_program_signals_packet
= packet
;
1782 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1783 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1784 thread. If GEN is set, set the general thread, if not, then set
1785 the step/continue thread. */
1787 set_thread (struct ptid ptid
, int gen
)
1789 struct remote_state
*rs
= get_remote_state ();
1790 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1791 char *buf
= rs
->buf
;
1792 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1794 if (ptid_equal (state
, ptid
))
1798 *buf
++ = gen
? 'g' : 'c';
1799 if (ptid_equal (ptid
, magic_null_ptid
))
1800 xsnprintf (buf
, endbuf
- buf
, "0");
1801 else if (ptid_equal (ptid
, any_thread_ptid
))
1802 xsnprintf (buf
, endbuf
- buf
, "0");
1803 else if (ptid_equal (ptid
, minus_one_ptid
))
1804 xsnprintf (buf
, endbuf
- buf
, "-1");
1806 write_ptid (buf
, endbuf
, ptid
);
1808 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1810 rs
->general_thread
= ptid
;
1812 rs
->continue_thread
= ptid
;
1816 set_general_thread (struct ptid ptid
)
1818 set_thread (ptid
, 1);
1822 set_continue_thread (struct ptid ptid
)
1824 set_thread (ptid
, 0);
1827 /* Change the remote current process. Which thread within the process
1828 ends up selected isn't important, as long as it is the same process
1829 as what INFERIOR_PTID points to.
1831 This comes from that fact that there is no explicit notion of
1832 "selected process" in the protocol. The selected process for
1833 general operations is the process the selected general thread
1837 set_general_process (void)
1839 struct remote_state
*rs
= get_remote_state ();
1841 /* If the remote can't handle multiple processes, don't bother. */
1842 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1845 /* We only need to change the remote current thread if it's pointing
1846 at some other process. */
1847 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1848 set_general_thread (inferior_ptid
);
1852 /* Return nonzero if the thread PTID is still alive on the remote
1856 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1858 struct remote_state
*rs
= get_remote_state ();
1861 if (ptid_equal (ptid
, magic_null_ptid
))
1862 /* The main thread is always alive. */
1865 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
1866 /* The main thread is always alive. This can happen after a
1867 vAttach, if the remote side doesn't support
1872 endp
= rs
->buf
+ get_remote_packet_size ();
1875 write_ptid (p
, endp
, ptid
);
1878 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1879 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1882 /* About these extended threadlist and threadinfo packets. They are
1883 variable length packets but, the fields within them are often fixed
1884 length. They are redundent enough to send over UDP as is the
1885 remote protocol in general. There is a matching unit test module
1888 /* WARNING: This threadref data structure comes from the remote O.S.,
1889 libstub protocol encoding, and remote.c. It is not particularly
1892 /* Right now, the internal structure is int. We want it to be bigger.
1893 Plan to fix this. */
1895 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1897 /* gdb_ext_thread_info is an internal GDB data structure which is
1898 equivalent to the reply of the remote threadinfo packet. */
1900 struct gdb_ext_thread_info
1902 threadref threadid
; /* External form of thread reference. */
1903 int active
; /* Has state interesting to GDB?
1905 char display
[256]; /* Brief state display, name,
1906 blocked/suspended. */
1907 char shortname
[32]; /* To be used to name threads. */
1908 char more_display
[256]; /* Long info, statistics, queue depth,
1912 /* The volume of remote transfers can be limited by submitting
1913 a mask containing bits specifying the desired information.
1914 Use a union of these values as the 'selection' parameter to
1915 get_thread_info. FIXME: Make these TAG names more thread specific. */
1917 #define TAG_THREADID 1
1918 #define TAG_EXISTS 2
1919 #define TAG_DISPLAY 4
1920 #define TAG_THREADNAME 8
1921 #define TAG_MOREDISPLAY 16
1923 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1925 static char *unpack_nibble (char *buf
, int *val
);
1927 static char *unpack_byte (char *buf
, int *value
);
1929 static char *pack_int (char *buf
, int value
);
1931 static char *unpack_int (char *buf
, int *value
);
1933 static char *unpack_string (char *src
, char *dest
, int length
);
1935 static char *pack_threadid (char *pkt
, threadref
*id
);
1937 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1939 void int_to_threadref (threadref
*id
, int value
);
1941 static int threadref_to_int (threadref
*ref
);
1943 static void copy_threadref (threadref
*dest
, threadref
*src
);
1945 static int threadmatch (threadref
*dest
, threadref
*src
);
1947 static char *pack_threadinfo_request (char *pkt
, int mode
,
1950 static int remote_unpack_thread_info_response (char *pkt
,
1951 threadref
*expectedref
,
1952 struct gdb_ext_thread_info
1956 static int remote_get_threadinfo (threadref
*threadid
,
1957 int fieldset
, /*TAG mask */
1958 struct gdb_ext_thread_info
*info
);
1960 static char *pack_threadlist_request (char *pkt
, int startflag
,
1962 threadref
*nextthread
);
1964 static int parse_threadlist_response (char *pkt
,
1966 threadref
*original_echo
,
1967 threadref
*resultlist
,
1970 static int remote_get_threadlist (int startflag
,
1971 threadref
*nextthread
,
1975 threadref
*threadlist
);
1977 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1979 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1980 void *context
, int looplimit
);
1982 static int remote_newthread_step (threadref
*ref
, void *context
);
1985 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1986 buffer we're allowed to write to. Returns
1987 BUF+CHARACTERS_WRITTEN. */
1990 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1993 struct remote_state
*rs
= get_remote_state ();
1995 if (remote_multi_process_p (rs
))
1997 pid
= ptid_get_pid (ptid
);
1999 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2001 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2003 tid
= ptid_get_lwp (ptid
);
2005 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2007 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2012 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2013 passed the last parsed char. Returns null_ptid on error. */
2016 read_ptid (char *buf
, char **obuf
)
2020 ULONGEST pid
= 0, tid
= 0;
2024 /* Multi-process ptid. */
2025 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2027 error (_("invalid remote ptid: %s"), p
);
2030 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2033 return ptid_build (pid
, tid
, 0);
2036 /* No multi-process. Just a tid. */
2037 pp
= unpack_varlen_hex (p
, &tid
);
2039 /* Since the stub is not sending a process id, then default to
2040 what's in inferior_ptid, unless it's null at this point. If so,
2041 then since there's no way to know the pid of the reported
2042 threads, use the magic number. */
2043 if (ptid_equal (inferior_ptid
, null_ptid
))
2044 pid
= ptid_get_pid (magic_null_ptid
);
2046 pid
= ptid_get_pid (inferior_ptid
);
2050 return ptid_build (pid
, tid
, 0);
2056 if (ch
>= 'a' && ch
<= 'f')
2057 return ch
- 'a' + 10;
2058 if (ch
>= '0' && ch
<= '9')
2060 if (ch
>= 'A' && ch
<= 'F')
2061 return ch
- 'A' + 10;
2066 stub_unpack_int (char *buff
, int fieldlength
)
2073 nibble
= stubhex (*buff
++);
2077 retval
= retval
<< 4;
2083 unpack_nibble (char *buf
, int *val
)
2085 *val
= fromhex (*buf
++);
2090 unpack_byte (char *buf
, int *value
)
2092 *value
= stub_unpack_int (buf
, 2);
2097 pack_int (char *buf
, int value
)
2099 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2100 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2101 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2102 buf
= pack_hex_byte (buf
, (value
& 0xff));
2107 unpack_int (char *buf
, int *value
)
2109 *value
= stub_unpack_int (buf
, 8);
2113 #if 0 /* Currently unused, uncomment when needed. */
2114 static char *pack_string (char *pkt
, char *string
);
2117 pack_string (char *pkt
, char *string
)
2122 len
= strlen (string
);
2124 len
= 200; /* Bigger than most GDB packets, junk??? */
2125 pkt
= pack_hex_byte (pkt
, len
);
2129 if ((ch
== '\0') || (ch
== '#'))
2130 ch
= '*'; /* Protect encapsulation. */
2135 #endif /* 0 (unused) */
2138 unpack_string (char *src
, char *dest
, int length
)
2147 pack_threadid (char *pkt
, threadref
*id
)
2150 unsigned char *altid
;
2152 altid
= (unsigned char *) id
;
2153 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2155 pkt
= pack_hex_byte (pkt
, *altid
++);
2161 unpack_threadid (char *inbuf
, threadref
*id
)
2164 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2167 altref
= (char *) id
;
2169 while (inbuf
< limit
)
2171 x
= stubhex (*inbuf
++);
2172 y
= stubhex (*inbuf
++);
2173 *altref
++ = (x
<< 4) | y
;
2178 /* Externally, threadrefs are 64 bits but internally, they are still
2179 ints. This is due to a mismatch of specifications. We would like
2180 to use 64bit thread references internally. This is an adapter
2184 int_to_threadref (threadref
*id
, int value
)
2186 unsigned char *scan
;
2188 scan
= (unsigned char *) id
;
2194 *scan
++ = (value
>> 24) & 0xff;
2195 *scan
++ = (value
>> 16) & 0xff;
2196 *scan
++ = (value
>> 8) & 0xff;
2197 *scan
++ = (value
& 0xff);
2201 threadref_to_int (threadref
*ref
)
2204 unsigned char *scan
;
2210 value
= (value
<< 8) | ((*scan
++) & 0xff);
2215 copy_threadref (threadref
*dest
, threadref
*src
)
2218 unsigned char *csrc
, *cdest
;
2220 csrc
= (unsigned char *) src
;
2221 cdest
= (unsigned char *) dest
;
2228 threadmatch (threadref
*dest
, threadref
*src
)
2230 /* Things are broken right now, so just assume we got a match. */
2232 unsigned char *srcp
, *destp
;
2234 srcp
= (char *) src
;
2235 destp
= (char *) dest
;
2239 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2246 threadid:1, # always request threadid
2253 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2256 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2258 *pkt
++ = 'q'; /* Info Query */
2259 *pkt
++ = 'P'; /* process or thread info */
2260 pkt
= pack_int (pkt
, mode
); /* mode */
2261 pkt
= pack_threadid (pkt
, id
); /* threadid */
2262 *pkt
= '\0'; /* terminate */
2266 /* These values tag the fields in a thread info response packet. */
2267 /* Tagging the fields allows us to request specific fields and to
2268 add more fields as time goes by. */
2270 #define TAG_THREADID 1 /* Echo the thread identifier. */
2271 #define TAG_EXISTS 2 /* Is this process defined enough to
2272 fetch registers and its stack? */
2273 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2274 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2275 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2279 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2280 struct gdb_ext_thread_info
*info
)
2282 struct remote_state
*rs
= get_remote_state ();
2286 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2289 /* info->threadid = 0; FIXME: implement zero_threadref. */
2291 info
->display
[0] = '\0';
2292 info
->shortname
[0] = '\0';
2293 info
->more_display
[0] = '\0';
2295 /* Assume the characters indicating the packet type have been
2297 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2298 pkt
= unpack_threadid (pkt
, &ref
);
2301 warning (_("Incomplete response to threadinfo request."));
2302 if (!threadmatch (&ref
, expectedref
))
2303 { /* This is an answer to a different request. */
2304 warning (_("ERROR RMT Thread info mismatch."));
2307 copy_threadref (&info
->threadid
, &ref
);
2309 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2311 /* Packets are terminated with nulls. */
2312 while ((pkt
< limit
) && mask
&& *pkt
)
2314 pkt
= unpack_int (pkt
, &tag
); /* tag */
2315 pkt
= unpack_byte (pkt
, &length
); /* length */
2316 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2318 warning (_("ERROR RMT: threadinfo tag mismatch."));
2322 if (tag
== TAG_THREADID
)
2326 warning (_("ERROR RMT: length of threadid is not 16."));
2330 pkt
= unpack_threadid (pkt
, &ref
);
2331 mask
= mask
& ~TAG_THREADID
;
2334 if (tag
== TAG_EXISTS
)
2336 info
->active
= stub_unpack_int (pkt
, length
);
2338 mask
= mask
& ~(TAG_EXISTS
);
2341 warning (_("ERROR RMT: 'exists' length too long."));
2347 if (tag
== TAG_THREADNAME
)
2349 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2350 mask
= mask
& ~TAG_THREADNAME
;
2353 if (tag
== TAG_DISPLAY
)
2355 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2356 mask
= mask
& ~TAG_DISPLAY
;
2359 if (tag
== TAG_MOREDISPLAY
)
2361 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2362 mask
= mask
& ~TAG_MOREDISPLAY
;
2365 warning (_("ERROR RMT: unknown thread info tag."));
2366 break; /* Not a tag we know about. */
2372 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2373 struct gdb_ext_thread_info
*info
)
2375 struct remote_state
*rs
= get_remote_state ();
2378 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2380 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2382 if (rs
->buf
[0] == '\0')
2385 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2390 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2393 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2394 threadref
*nextthread
)
2396 *pkt
++ = 'q'; /* info query packet */
2397 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2398 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2399 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2400 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2405 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2408 parse_threadlist_response (char *pkt
, int result_limit
,
2409 threadref
*original_echo
, threadref
*resultlist
,
2412 struct remote_state
*rs
= get_remote_state ();
2414 int count
, resultcount
, done
;
2417 /* Assume the 'q' and 'M chars have been stripped. */
2418 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2419 /* done parse past here */
2420 pkt
= unpack_byte (pkt
, &count
); /* count field */
2421 pkt
= unpack_nibble (pkt
, &done
);
2422 /* The first threadid is the argument threadid. */
2423 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2424 while ((count
-- > 0) && (pkt
< limit
))
2426 pkt
= unpack_threadid (pkt
, resultlist
++);
2427 if (resultcount
++ >= result_limit
)
2436 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2437 int *done
, int *result_count
, threadref
*threadlist
)
2439 struct remote_state
*rs
= get_remote_state ();
2442 /* Trancate result limit to be smaller than the packet size. */
2443 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2444 >= get_remote_packet_size ())
2445 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2447 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2449 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2451 if (*rs
->buf
== '\0')
2455 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2456 &rs
->echo_nextthread
, threadlist
, done
);
2458 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2460 /* FIXME: This is a good reason to drop the packet. */
2461 /* Possably, there is a duplicate response. */
2463 retransmit immediatly - race conditions
2464 retransmit after timeout - yes
2466 wait for packet, then exit
2468 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2469 return 0; /* I choose simply exiting. */
2471 if (*result_count
<= 0)
2475 warning (_("RMT ERROR : failed to get remote thread list."));
2478 return result
; /* break; */
2480 if (*result_count
> result_limit
)
2483 warning (_("RMT ERROR: threadlist response longer than requested."));
2489 /* This is the interface between remote and threads, remotes upper
2492 /* remote_find_new_threads retrieves the thread list and for each
2493 thread in the list, looks up the thread in GDB's internal list,
2494 adding the thread if it does not already exist. This involves
2495 getting partial thread lists from the remote target so, polling the
2496 quit_flag is required. */
2500 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2503 struct remote_state
*rs
= get_remote_state ();
2504 int done
, i
, result_count
;
2512 if (loopcount
++ > looplimit
)
2515 warning (_("Remote fetch threadlist -infinite loop-."));
2518 if (!remote_get_threadlist (startflag
, &rs
->nextthread
,
2519 MAXTHREADLISTRESULTS
,
2520 &done
, &result_count
, rs
->resultthreadlist
))
2525 /* Clear for later iterations. */
2527 /* Setup to resume next batch of thread references, set nextthread. */
2528 if (result_count
>= 1)
2529 copy_threadref (&rs
->nextthread
,
2530 &rs
->resultthreadlist
[result_count
- 1]);
2532 while (result_count
--)
2533 if (!(result
= (*stepfunction
) (&rs
->resultthreadlist
[i
++], context
)))
2540 remote_newthread_step (threadref
*ref
, void *context
)
2542 int pid
= ptid_get_pid (inferior_ptid
);
2543 ptid_t ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2545 if (!in_thread_list (ptid
))
2547 return 1; /* continue iterator */
2550 #define CRAZY_MAX_THREADS 1000
2553 remote_current_thread (ptid_t oldpid
)
2555 struct remote_state
*rs
= get_remote_state ();
2558 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2559 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2560 return read_ptid (&rs
->buf
[2], NULL
);
2565 /* Find new threads for info threads command.
2566 * Original version, using John Metzler's thread protocol.
2570 remote_find_new_threads (void)
2572 remote_threadlist_iterator (remote_newthread_step
, 0,
2576 #if defined(HAVE_LIBEXPAT)
2578 typedef struct thread_item
2584 DEF_VEC_O(thread_item_t
);
2586 struct threads_parsing_context
2588 VEC (thread_item_t
) *items
;
2592 start_thread (struct gdb_xml_parser
*parser
,
2593 const struct gdb_xml_element
*element
,
2594 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2596 struct threads_parsing_context
*data
= user_data
;
2598 struct thread_item item
;
2600 struct gdb_xml_value
*attr
;
2602 id
= xml_find_attribute (attributes
, "id")->value
;
2603 item
.ptid
= read_ptid (id
, NULL
);
2605 attr
= xml_find_attribute (attributes
, "core");
2607 item
.core
= *(ULONGEST
*) attr
->value
;
2613 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2617 end_thread (struct gdb_xml_parser
*parser
,
2618 const struct gdb_xml_element
*element
,
2619 void *user_data
, const char *body_text
)
2621 struct threads_parsing_context
*data
= user_data
;
2623 if (body_text
&& *body_text
)
2624 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2627 const struct gdb_xml_attribute thread_attributes
[] = {
2628 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2629 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2630 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2633 const struct gdb_xml_element thread_children
[] = {
2634 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2637 const struct gdb_xml_element threads_children
[] = {
2638 { "thread", thread_attributes
, thread_children
,
2639 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2640 start_thread
, end_thread
},
2641 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2644 const struct gdb_xml_element threads_elements
[] = {
2645 { "threads", NULL
, threads_children
,
2646 GDB_XML_EF_NONE
, NULL
, NULL
},
2647 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2650 /* Discard the contents of the constructed thread info context. */
2653 clear_threads_parsing_context (void *p
)
2655 struct threads_parsing_context
*context
= p
;
2657 struct thread_item
*item
;
2659 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2660 xfree (item
->extra
);
2662 VEC_free (thread_item_t
, context
->items
);
2668 * Find all threads for info threads command.
2669 * Uses new thread protocol contributed by Cisco.
2670 * Falls back and attempts to use the older method (above)
2671 * if the target doesn't respond to the new method.
2675 remote_threads_info (struct target_ops
*ops
)
2677 struct remote_state
*rs
= get_remote_state ();
2681 if (rs
->remote_desc
== 0) /* paranoia */
2682 error (_("Command can only be used when connected to the remote target."));
2684 #if defined(HAVE_LIBEXPAT)
2685 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2687 char *xml
= target_read_stralloc (¤t_target
,
2688 TARGET_OBJECT_THREADS
, NULL
);
2690 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2694 struct threads_parsing_context context
;
2696 context
.items
= NULL
;
2697 make_cleanup (clear_threads_parsing_context
, &context
);
2699 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2700 threads_elements
, xml
, &context
) == 0)
2703 struct thread_item
*item
;
2706 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2709 if (!ptid_equal (item
->ptid
, null_ptid
))
2711 struct private_thread_info
*info
;
2712 /* In non-stop mode, we assume new found threads
2713 are running until proven otherwise with a
2714 stop reply. In all-stop, we can only get
2715 here if all threads are stopped. */
2716 int running
= non_stop
? 1 : 0;
2718 remote_notice_new_inferior (item
->ptid
, running
);
2720 info
= demand_private_info (item
->ptid
);
2721 info
->core
= item
->core
;
2722 info
->extra
= item
->extra
;
2729 do_cleanups (back_to
);
2734 if (rs
->use_threadinfo_query
)
2736 putpkt ("qfThreadInfo");
2737 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2739 if (bufp
[0] != '\0') /* q packet recognized */
2741 struct cleanup
*old_chain
;
2744 /* remote_notice_new_inferior (in the loop below) may make
2745 new RSP calls, which clobber rs->buf. Work with a
2747 bufp
= saved_reply
= xstrdup (rs
->buf
);
2748 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2750 while (*bufp
++ == 'm') /* reply contains one or more TID */
2754 new_thread
= read_ptid (bufp
, &bufp
);
2755 if (!ptid_equal (new_thread
, null_ptid
))
2757 /* In non-stop mode, we assume new found threads
2758 are running until proven otherwise with a
2759 stop reply. In all-stop, we can only get
2760 here if all threads are stopped. */
2761 int running
= non_stop
? 1 : 0;
2763 remote_notice_new_inferior (new_thread
, running
);
2766 while (*bufp
++ == ','); /* comma-separated list */
2767 free_current_contents (&saved_reply
);
2768 putpkt ("qsThreadInfo");
2769 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2770 bufp
= saved_reply
= xstrdup (rs
->buf
);
2772 do_cleanups (old_chain
);
2777 /* Only qfThreadInfo is supported in non-stop mode. */
2781 /* Else fall back to old method based on jmetzler protocol. */
2782 rs
->use_threadinfo_query
= 0;
2783 remote_find_new_threads ();
2788 * Collect a descriptive string about the given thread.
2789 * The target may say anything it wants to about the thread
2790 * (typically info about its blocked / runnable state, name, etc.).
2791 * This string will appear in the info threads display.
2793 * Optional: targets are not required to implement this function.
2797 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
2799 struct remote_state
*rs
= get_remote_state ();
2803 struct gdb_ext_thread_info threadinfo
;
2804 static char display_buf
[100]; /* arbitrary... */
2805 int n
= 0; /* position in display_buf */
2807 if (rs
->remote_desc
== 0) /* paranoia */
2808 internal_error (__FILE__
, __LINE__
,
2809 _("remote_threads_extra_info"));
2811 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2812 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
2813 /* This is the main thread which was added by GDB. The remote
2814 server doesn't know about it. */
2817 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
2819 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2821 if (info
&& info
->private)
2822 return info
->private->extra
;
2827 if (rs
->use_threadextra_query
)
2830 char *endb
= rs
->buf
+ get_remote_packet_size ();
2832 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2834 write_ptid (b
, endb
, tp
->ptid
);
2837 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2838 if (rs
->buf
[0] != 0)
2840 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2841 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2842 display_buf
[result
] = '\0';
2847 /* If the above query fails, fall back to the old method. */
2848 rs
->use_threadextra_query
= 0;
2849 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2850 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2851 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
2852 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2853 if (threadinfo
.active
)
2855 if (*threadinfo
.shortname
)
2856 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2857 " Name: %s,", threadinfo
.shortname
);
2858 if (*threadinfo
.display
)
2859 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2860 " State: %s,", threadinfo
.display
);
2861 if (*threadinfo
.more_display
)
2862 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2863 " Priority: %s", threadinfo
.more_display
);
2867 /* For purely cosmetic reasons, clear up trailing commas. */
2868 if (',' == display_buf
[n
-1])
2869 display_buf
[n
-1] = ' ';
2878 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
2879 struct static_tracepoint_marker
*marker
)
2881 struct remote_state
*rs
= get_remote_state ();
2884 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2886 p
+= hexnumstr (p
, addr
);
2888 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2892 error (_("Remote failure reply: %s"), p
);
2896 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2903 static VEC(static_tracepoint_marker_p
) *
2904 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
2907 struct remote_state
*rs
= get_remote_state ();
2908 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2909 struct static_tracepoint_marker
*marker
= NULL
;
2910 struct cleanup
*old_chain
;
2913 /* Ask for a first packet of static tracepoint marker
2916 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2919 error (_("Remote failure reply: %s"), p
);
2921 old_chain
= make_cleanup (free_current_marker
, &marker
);
2926 marker
= XCNEW (struct static_tracepoint_marker
);
2930 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2932 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2934 VEC_safe_push (static_tracepoint_marker_p
,
2940 release_static_tracepoint_marker (marker
);
2941 memset (marker
, 0, sizeof (*marker
));
2944 while (*p
++ == ','); /* comma-separated list */
2945 /* Ask for another packet of static tracepoint definition. */
2947 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2951 do_cleanups (old_chain
);
2956 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2959 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
2961 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
2965 /* Restart the remote side; this is an extended protocol operation. */
2968 extended_remote_restart (void)
2970 struct remote_state
*rs
= get_remote_state ();
2972 /* Send the restart command; for reasons I don't understand the
2973 remote side really expects a number after the "R". */
2974 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2977 remote_fileio_reset ();
2980 /* Clean up connection to a remote debugger. */
2983 remote_close (struct target_ops
*self
)
2985 struct remote_state
*rs
= get_remote_state ();
2987 if (rs
->remote_desc
== NULL
)
2988 return; /* already closed */
2990 /* Make sure we leave stdin registered in the event loop, and we
2991 don't leave the async SIGINT signal handler installed. */
2992 remote_terminal_ours (self
);
2994 serial_close (rs
->remote_desc
);
2995 rs
->remote_desc
= NULL
;
2997 /* We don't have a connection to the remote stub anymore. Get rid
2998 of all the inferiors and their threads we were controlling.
2999 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3000 will be unable to find the thread corresponding to (pid, 0, 0). */
3001 inferior_ptid
= null_ptid
;
3002 discard_all_inferiors ();
3004 /* We are closing the remote target, so we should discard
3005 everything of this target. */
3006 discard_pending_stop_replies_in_queue (rs
);
3008 if (remote_async_inferior_event_token
)
3009 delete_async_event_handler (&remote_async_inferior_event_token
);
3011 remote_notif_state_xfree (rs
->notif_state
);
3013 trace_reset_local_state ();
3016 /* Query the remote side for the text, data and bss offsets. */
3021 struct remote_state
*rs
= get_remote_state ();
3024 int lose
, num_segments
= 0, do_sections
, do_segments
;
3025 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3026 struct section_offsets
*offs
;
3027 struct symfile_segment_data
*data
;
3029 if (symfile_objfile
== NULL
)
3032 putpkt ("qOffsets");
3033 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3036 if (buf
[0] == '\000')
3037 return; /* Return silently. Stub doesn't support
3041 warning (_("Remote failure reply: %s"), buf
);
3045 /* Pick up each field in turn. This used to be done with scanf, but
3046 scanf will make trouble if CORE_ADDR size doesn't match
3047 conversion directives correctly. The following code will work
3048 with any size of CORE_ADDR. */
3049 text_addr
= data_addr
= bss_addr
= 0;
3053 if (strncmp (ptr
, "Text=", 5) == 0)
3056 /* Don't use strtol, could lose on big values. */
3057 while (*ptr
&& *ptr
!= ';')
3058 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3060 if (strncmp (ptr
, ";Data=", 6) == 0)
3063 while (*ptr
&& *ptr
!= ';')
3064 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3069 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3072 while (*ptr
&& *ptr
!= ';')
3073 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3075 if (bss_addr
!= data_addr
)
3076 warning (_("Target reported unsupported offsets: %s"), buf
);
3081 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3084 /* Don't use strtol, could lose on big values. */
3085 while (*ptr
&& *ptr
!= ';')
3086 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3089 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3092 while (*ptr
&& *ptr
!= ';')
3093 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3101 error (_("Malformed response to offset query, %s"), buf
);
3102 else if (*ptr
!= '\0')
3103 warning (_("Target reported unsupported offsets: %s"), buf
);
3105 offs
= ((struct section_offsets
*)
3106 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3107 memcpy (offs
, symfile_objfile
->section_offsets
,
3108 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3110 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3111 do_segments
= (data
!= NULL
);
3112 do_sections
= num_segments
== 0;
3114 if (num_segments
> 0)
3116 segments
[0] = text_addr
;
3117 segments
[1] = data_addr
;
3119 /* If we have two segments, we can still try to relocate everything
3120 by assuming that the .text and .data offsets apply to the whole
3121 text and data segments. Convert the offsets given in the packet
3122 to base addresses for symfile_map_offsets_to_segments. */
3123 else if (data
&& data
->num_segments
== 2)
3125 segments
[0] = data
->segment_bases
[0] + text_addr
;
3126 segments
[1] = data
->segment_bases
[1] + data_addr
;
3129 /* If the object file has only one segment, assume that it is text
3130 rather than data; main programs with no writable data are rare,
3131 but programs with no code are useless. Of course the code might
3132 have ended up in the data segment... to detect that we would need
3133 the permissions here. */
3134 else if (data
&& data
->num_segments
== 1)
3136 segments
[0] = data
->segment_bases
[0] + text_addr
;
3139 /* There's no way to relocate by segment. */
3145 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3146 offs
, num_segments
, segments
);
3148 if (ret
== 0 && !do_sections
)
3149 error (_("Can not handle qOffsets TextSeg "
3150 "response with this symbol file"));
3157 free_symfile_segment_data (data
);
3161 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3163 /* This is a temporary kludge to force data and bss to use the
3164 same offsets because that's what nlmconv does now. The real
3165 solution requires changes to the stub and remote.c that I
3166 don't have time to do right now. */
3168 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3169 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3172 objfile_relocate (symfile_objfile
, offs
);
3175 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3176 threads we know are stopped already. This is used during the
3177 initial remote connection in non-stop mode --- threads that are
3178 reported as already being stopped are left stopped. */
3181 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3183 /* If we have a stop reply for this thread, it must be stopped. */
3184 if (peek_stop_reply (thread
->ptid
))
3185 set_stop_requested (thread
->ptid
, 1);
3190 /* Send interrupt_sequence to remote target. */
3192 send_interrupt_sequence (void)
3194 struct remote_state
*rs
= get_remote_state ();
3196 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3197 remote_serial_write ("\x03", 1);
3198 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3199 serial_send_break (rs
->remote_desc
);
3200 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3202 serial_send_break (rs
->remote_desc
);
3203 remote_serial_write ("g", 1);
3206 internal_error (__FILE__
, __LINE__
,
3207 _("Invalid value for interrupt_sequence_mode: %s."),
3208 interrupt_sequence_mode
);
3212 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3213 and extract the PTID. Returns NULL_PTID if not found. */
3216 stop_reply_extract_thread (char *stop_reply
)
3218 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3222 /* Txx r:val ; r:val (...) */
3225 /* Look for "register" named "thread". */
3230 p1
= strchr (p
, ':');
3234 if (strncmp (p
, "thread", p1
- p
) == 0)
3235 return read_ptid (++p1
, &p
);
3237 p1
= strchr (p
, ';');
3249 /* Determine the remote side's current thread. If we have a stop
3250 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3251 "thread" register we can extract the current thread from. If not,
3252 ask the remote which is the current thread with qC. The former
3253 method avoids a roundtrip. */
3256 get_current_thread (char *wait_status
)
3260 /* Note we don't use remote_parse_stop_reply as that makes use of
3261 the target architecture, which we haven't yet fully determined at
3263 if (wait_status
!= NULL
)
3264 ptid
= stop_reply_extract_thread (wait_status
);
3265 if (ptid_equal (ptid
, null_ptid
))
3266 ptid
= remote_current_thread (inferior_ptid
);
3271 /* Query the remote target for which is the current thread/process,
3272 add it to our tables, and update INFERIOR_PTID. The caller is
3273 responsible for setting the state such that the remote end is ready
3274 to return the current thread.
3276 This function is called after handling the '?' or 'vRun' packets,
3277 whose response is a stop reply from which we can also try
3278 extracting the thread. If the target doesn't support the explicit
3279 qC query, we infer the current thread from that stop reply, passed
3280 in in WAIT_STATUS, which may be NULL. */
3283 add_current_inferior_and_thread (char *wait_status
)
3285 struct remote_state
*rs
= get_remote_state ();
3287 ptid_t ptid
= null_ptid
;
3289 inferior_ptid
= null_ptid
;
3291 /* Now, if we have thread information, update inferior_ptid. */
3292 ptid
= get_current_thread (wait_status
);
3294 if (!ptid_equal (ptid
, null_ptid
))
3296 if (!remote_multi_process_p (rs
))
3299 inferior_ptid
= ptid
;
3303 /* Without this, some commands which require an active target
3304 (such as kill) won't work. This variable serves (at least)
3305 double duty as both the pid of the target process (if it has
3306 such), and as a flag indicating that a target is active. */
3307 inferior_ptid
= magic_null_ptid
;
3311 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3313 /* Add the main thread. */
3314 add_thread_silent (inferior_ptid
);
3318 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3320 struct remote_state
*rs
= get_remote_state ();
3321 struct packet_config
*noack_config
;
3322 char *wait_status
= NULL
;
3324 immediate_quit
++; /* Allow user to interrupt it. */
3327 if (interrupt_on_connect
)
3328 send_interrupt_sequence ();
3330 /* Ack any packet which the remote side has already sent. */
3331 serial_write (rs
->remote_desc
, "+", 1);
3333 /* Signal other parts that we're going through the initial setup,
3334 and so things may not be stable yet. */
3335 rs
->starting_up
= 1;
3337 /* The first packet we send to the target is the optional "supported
3338 packets" request. If the target can answer this, it will tell us
3339 which later probes to skip. */
3340 remote_query_supported ();
3342 /* If the stub wants to get a QAllow, compose one and send it. */
3343 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3344 remote_set_permissions (target
);
3346 /* Next, we possibly activate noack mode.
3348 If the QStartNoAckMode packet configuration is set to AUTO,
3349 enable noack mode if the stub reported a wish for it with
3352 If set to TRUE, then enable noack mode even if the stub didn't
3353 report it in qSupported. If the stub doesn't reply OK, the
3354 session ends with an error.
3356 If FALSE, then don't activate noack mode, regardless of what the
3357 stub claimed should be the default with qSupported. */
3359 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3360 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3362 putpkt ("QStartNoAckMode");
3363 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3364 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3370 /* Tell the remote that we are using the extended protocol. */
3372 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3375 /* Let the target know which signals it is allowed to pass down to
3377 update_signals_program_target ();
3379 /* Next, if the target can specify a description, read it. We do
3380 this before anything involving memory or registers. */
3381 target_find_description ();
3383 /* Next, now that we know something about the target, update the
3384 address spaces in the program spaces. */
3385 update_address_spaces ();
3387 /* On OSs where the list of libraries is global to all
3388 processes, we fetch them early. */
3389 if (gdbarch_has_global_solist (target_gdbarch ()))
3390 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3394 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3395 error (_("Non-stop mode requested, but remote "
3396 "does not support non-stop"));
3398 putpkt ("QNonStop:1");
3399 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3401 if (strcmp (rs
->buf
, "OK") != 0)
3402 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3404 /* Find about threads and processes the stub is already
3405 controlling. We default to adding them in the running state.
3406 The '?' query below will then tell us about which threads are
3408 remote_threads_info (target
);
3410 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
3412 /* Don't assume that the stub can operate in all-stop mode.
3413 Request it explicitly. */
3414 putpkt ("QNonStop:0");
3415 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3417 if (strcmp (rs
->buf
, "OK") != 0)
3418 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3421 /* Upload TSVs regardless of whether the target is running or not. The
3422 remote stub, such as GDBserver, may have some predefined or builtin
3423 TSVs, even if the target is not running. */
3424 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3426 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3428 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3429 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3432 /* Check whether the target is running now. */
3434 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3440 struct inferior
*inf
;
3442 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3445 error (_("The target is not running (try extended-remote?)"));
3447 /* We're connected, but not running. Drop out before we
3448 call start_remote. */
3449 rs
->starting_up
= 0;
3454 /* Save the reply for later. */
3455 wait_status
= alloca (strlen (rs
->buf
) + 1);
3456 strcpy (wait_status
, rs
->buf
);
3459 /* Fetch thread list. */
3460 target_find_new_threads ();
3462 /* Let the stub know that we want it to return the thread. */
3463 set_continue_thread (minus_one_ptid
);
3465 if (thread_count () == 0)
3467 /* Target has no concept of threads at all. GDB treats
3468 non-threaded target as single-threaded; add a main
3470 add_current_inferior_and_thread (wait_status
);
3474 /* We have thread information; select the thread the target
3475 says should be current. If we're reconnecting to a
3476 multi-threaded program, this will ideally be the thread
3477 that last reported an event before GDB disconnected. */
3478 inferior_ptid
= get_current_thread (wait_status
);
3479 if (ptid_equal (inferior_ptid
, null_ptid
))
3481 /* Odd... The target was able to list threads, but not
3482 tell us which thread was current (no "thread"
3483 register in T stop reply?). Just pick the first
3484 thread in the thread list then. */
3485 inferior_ptid
= thread_list
->ptid
;
3489 /* init_wait_for_inferior should be called before get_offsets in order
3490 to manage `inserted' flag in bp loc in a correct state.
3491 breakpoint_init_inferior, called from init_wait_for_inferior, set
3492 `inserted' flag to 0, while before breakpoint_re_set, called from
3493 start_remote, set `inserted' flag to 1. In the initialization of
3494 inferior, breakpoint_init_inferior should be called first, and then
3495 breakpoint_re_set can be called. If this order is broken, state of
3496 `inserted' flag is wrong, and cause some problems on breakpoint
3498 init_wait_for_inferior ();
3500 get_offsets (); /* Get text, data & bss offsets. */
3502 /* If we could not find a description using qXfer, and we know
3503 how to do it some other way, try again. This is not
3504 supported for non-stop; it could be, but it is tricky if
3505 there are no stopped threads when we connect. */
3506 if (remote_read_description_p (target
)
3507 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3509 target_clear_description ();
3510 target_find_description ();
3513 /* Use the previously fetched status. */
3514 gdb_assert (wait_status
!= NULL
);
3515 strcpy (rs
->buf
, wait_status
);
3516 rs
->cached_wait_status
= 1;
3519 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3523 /* Clear WFI global state. Do this before finding about new
3524 threads and inferiors, and setting the current inferior.
3525 Otherwise we would clear the proceed status of the current
3526 inferior when we want its stop_soon state to be preserved
3527 (see notice_new_inferior). */
3528 init_wait_for_inferior ();
3530 /* In non-stop, we will either get an "OK", meaning that there
3531 are no stopped threads at this time; or, a regular stop
3532 reply. In the latter case, there may be more than one thread
3533 stopped --- we pull them all out using the vStopped
3535 if (strcmp (rs
->buf
, "OK") != 0)
3537 struct notif_client
*notif
= ¬if_client_stop
;
3539 /* remote_notif_get_pending_replies acks this one, and gets
3541 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3542 = remote_notif_parse (notif
, rs
->buf
);
3543 remote_notif_get_pending_events (notif
);
3545 /* Make sure that threads that were stopped remain
3547 iterate_over_threads (set_stop_requested_callback
, NULL
);
3550 if (target_can_async_p ())
3551 target_async (inferior_event_handler
, 0);
3553 if (thread_count () == 0)
3556 error (_("The target is not running (try extended-remote?)"));
3558 /* We're connected, but not running. Drop out before we
3559 call start_remote. */
3560 rs
->starting_up
= 0;
3564 /* Let the stub know that we want it to return the thread. */
3566 /* Force the stub to choose a thread. */
3567 set_general_thread (null_ptid
);
3570 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3571 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3572 error (_("remote didn't report the current thread in non-stop mode"));
3574 get_offsets (); /* Get text, data & bss offsets. */
3576 /* In non-stop mode, any cached wait status will be stored in
3577 the stop reply queue. */
3578 gdb_assert (wait_status
== NULL
);
3580 /* Report all signals during attach/startup. */
3581 remote_pass_signals (target
, 0, NULL
);
3584 /* If we connected to a live target, do some additional setup. */
3585 if (target_has_execution
)
3587 if (symfile_objfile
) /* No use without a symbol-file. */
3588 remote_check_symbols ();
3591 /* Possibly the target has been engaged in a trace run started
3592 previously; find out where things are at. */
3593 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3595 struct uploaded_tp
*uploaded_tps
= NULL
;
3597 if (current_trace_status ()->running
)
3598 printf_filtered (_("Trace is already running on the target.\n"));
3600 remote_upload_tracepoints (target
, &uploaded_tps
);
3602 merge_uploaded_tracepoints (&uploaded_tps
);
3605 /* The thread and inferior lists are now synchronized with the
3606 target, our symbols have been relocated, and we're merged the
3607 target's tracepoints with ours. We're done with basic start
3609 rs
->starting_up
= 0;
3611 /* If breakpoints are global, insert them now. */
3612 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3613 && breakpoints_always_inserted_mode ())
3614 insert_breakpoints ();
3617 /* Open a connection to a remote debugger.
3618 NAME is the filename used for communication. */
3621 remote_open (char *name
, int from_tty
)
3623 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3626 /* Open a connection to a remote debugger using the extended
3627 remote gdb protocol. NAME is the filename used for communication. */
3630 extended_remote_open (char *name
, int from_tty
)
3632 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3635 /* Reset all packets back to "unknown support". Called when opening a
3636 new connection to a remote target. */
3639 reset_all_packet_configs_support (void)
3643 for (i
= 0; i
< PACKET_MAX
; i
++)
3644 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3647 /* Initialize all packet configs. */
3650 init_all_packet_configs (void)
3654 for (i
= 0; i
< PACKET_MAX
; i
++)
3656 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
3657 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
3661 /* Symbol look-up. */
3664 remote_check_symbols (void)
3666 struct remote_state
*rs
= get_remote_state ();
3667 char *msg
, *reply
, *tmp
;
3668 struct bound_minimal_symbol sym
;
3671 /* The remote side has no concept of inferiors that aren't running
3672 yet, it only knows about running processes. If we're connected
3673 but our current inferior is not running, we should not invite the
3674 remote target to request symbol lookups related to its
3675 (unrelated) current process. */
3676 if (!target_has_execution
)
3679 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
3682 /* Make sure the remote is pointing at the right process. Note
3683 there's no way to select "no process". */
3684 set_general_process ();
3686 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3687 because we need both at the same time. */
3688 msg
= alloca (get_remote_packet_size ());
3690 /* Invite target to request symbol lookups. */
3692 putpkt ("qSymbol::");
3693 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3694 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3697 while (strncmp (reply
, "qSymbol:", 8) == 0)
3699 struct bound_minimal_symbol sym
;
3702 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3704 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3705 if (sym
.minsym
== NULL
)
3706 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3709 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3710 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
3712 /* If this is a function address, return the start of code
3713 instead of any data function descriptor. */
3714 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3718 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3719 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3723 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3728 static struct serial
*
3729 remote_serial_open (char *name
)
3731 static int udp_warning
= 0;
3733 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3734 of in ser-tcp.c, because it is the remote protocol assuming that the
3735 serial connection is reliable and not the serial connection promising
3737 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3739 warning (_("The remote protocol may be unreliable over UDP.\n"
3740 "Some events may be lost, rendering further debugging "
3745 return serial_open (name
);
3748 /* Inform the target of our permission settings. The permission flags
3749 work without this, but if the target knows the settings, it can do
3750 a couple things. First, it can add its own check, to catch cases
3751 that somehow manage to get by the permissions checks in target
3752 methods. Second, if the target is wired to disallow particular
3753 settings (for instance, a system in the field that is not set up to
3754 be able to stop at a breakpoint), it can object to any unavailable
3758 remote_set_permissions (struct target_ops
*self
)
3760 struct remote_state
*rs
= get_remote_state ();
3762 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3763 "WriteReg:%x;WriteMem:%x;"
3764 "InsertBreak:%x;InsertTrace:%x;"
3765 "InsertFastTrace:%x;Stop:%x",
3766 may_write_registers
, may_write_memory
,
3767 may_insert_breakpoints
, may_insert_tracepoints
,
3768 may_insert_fast_tracepoints
, may_stop
);
3770 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3772 /* If the target didn't like the packet, warn the user. Do not try
3773 to undo the user's settings, that would just be maddening. */
3774 if (strcmp (rs
->buf
, "OK") != 0)
3775 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3778 /* This type describes each known response to the qSupported
3780 struct protocol_feature
3782 /* The name of this protocol feature. */
3785 /* The default for this protocol feature. */
3786 enum packet_support default_support
;
3788 /* The function to call when this feature is reported, or after
3789 qSupported processing if the feature is not supported.
3790 The first argument points to this structure. The second
3791 argument indicates whether the packet requested support be
3792 enabled, disabled, or probed (or the default, if this function
3793 is being called at the end of processing and this feature was
3794 not reported). The third argument may be NULL; if not NULL, it
3795 is a NUL-terminated string taken from the packet following
3796 this feature's name and an equals sign. */
3797 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3800 /* The corresponding packet for this feature. Only used if
3801 FUNC is remote_supported_packet. */
3806 remote_supported_packet (const struct protocol_feature
*feature
,
3807 enum packet_support support
,
3808 const char *argument
)
3812 warning (_("Remote qSupported response supplied an unexpected value for"
3813 " \"%s\"."), feature
->name
);
3817 remote_protocol_packets
[feature
->packet
].support
= support
;
3821 remote_packet_size (const struct protocol_feature
*feature
,
3822 enum packet_support support
, const char *value
)
3824 struct remote_state
*rs
= get_remote_state ();
3829 if (support
!= PACKET_ENABLE
)
3832 if (value
== NULL
|| *value
== '\0')
3834 warning (_("Remote target reported \"%s\" without a size."),
3840 packet_size
= strtol (value
, &value_end
, 16);
3841 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3843 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3844 feature
->name
, value
);
3848 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3850 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3851 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3852 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3855 /* Record the new maximum packet size. */
3856 rs
->explicit_packet_size
= packet_size
;
3859 static const struct protocol_feature remote_protocol_features
[] = {
3860 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3861 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3862 PACKET_qXfer_auxv
},
3863 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3864 PACKET_qXfer_features
},
3865 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3866 PACKET_qXfer_libraries
},
3867 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3868 PACKET_qXfer_libraries_svr4
},
3869 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3870 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
3871 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3872 PACKET_qXfer_memory_map
},
3873 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3874 PACKET_qXfer_spu_read
},
3875 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3876 PACKET_qXfer_spu_write
},
3877 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3878 PACKET_qXfer_osdata
},
3879 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3880 PACKET_qXfer_threads
},
3881 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3882 PACKET_qXfer_traceframe_info
},
3883 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3884 PACKET_QPassSignals
},
3885 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3886 PACKET_QProgramSignals
},
3887 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3888 PACKET_QStartNoAckMode
},
3889 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
3890 PACKET_multiprocess_feature
},
3891 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
3892 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3893 PACKET_qXfer_siginfo_read
},
3894 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3895 PACKET_qXfer_siginfo_write
},
3896 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3897 PACKET_ConditionalTracepoints
},
3898 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
3899 PACKET_ConditionalBreakpoints
},
3900 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
3901 PACKET_BreakpointCommands
},
3902 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3903 PACKET_FastTracepoints
},
3904 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3905 PACKET_StaticTracepoints
},
3906 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
3907 PACKET_InstallInTrace
},
3908 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
3909 PACKET_DisconnectedTracing_feature
},
3910 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3912 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3914 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3915 PACKET_TracepointSource
},
3916 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3918 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
3919 PACKET_EnableDisableTracepoints_feature
},
3920 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3921 PACKET_qXfer_fdpic
},
3922 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3924 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3925 PACKET_QDisableRandomization
},
3926 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3927 { "QTBuffer:size", PACKET_DISABLE
,
3928 remote_supported_packet
, PACKET_QTBuffer_size
},
3929 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
3930 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
3931 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
3932 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
3933 PACKET_qXfer_btrace
}
3936 static char *remote_support_xml
;
3938 /* Register string appended to "xmlRegisters=" in qSupported query. */
3941 register_remote_support_xml (const char *xml
)
3943 #if defined(HAVE_LIBEXPAT)
3944 if (remote_support_xml
== NULL
)
3945 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3948 char *copy
= xstrdup (remote_support_xml
+ 13);
3949 char *p
= strtok (copy
, ",");
3953 if (strcmp (p
, xml
) == 0)
3960 while ((p
= strtok (NULL
, ",")) != NULL
);
3963 remote_support_xml
= reconcat (remote_support_xml
,
3964 remote_support_xml
, ",", xml
,
3971 remote_query_supported_append (char *msg
, const char *append
)
3974 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3976 return xstrdup (append
);
3980 remote_query_supported (void)
3982 struct remote_state
*rs
= get_remote_state ();
3985 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3987 /* The packet support flags are handled differently for this packet
3988 than for most others. We treat an error, a disabled packet, and
3989 an empty response identically: any features which must be reported
3990 to be used will be automatically disabled. An empty buffer
3991 accomplishes this, since that is also the representation for a list
3992 containing no features. */
3995 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
3998 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4000 q
= remote_query_supported_append (q
, "multiprocess+");
4002 if (remote_support_xml
)
4003 q
= remote_query_supported_append (q
, remote_support_xml
);
4005 q
= remote_query_supported_append (q
, "qRelocInsn+");
4007 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4010 do_cleanups (old_chain
);
4012 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4014 /* If an error occured, warn, but do not return - just reset the
4015 buffer to empty and go on to disable features. */
4016 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4019 warning (_("Remote failure reply: %s"), rs
->buf
);
4024 memset (seen
, 0, sizeof (seen
));
4029 enum packet_support is_supported
;
4030 char *p
, *end
, *name_end
, *value
;
4032 /* First separate out this item from the rest of the packet. If
4033 there's another item after this, we overwrite the separator
4034 (terminated strings are much easier to work with). */
4036 end
= strchr (p
, ';');
4039 end
= p
+ strlen (p
);
4049 warning (_("empty item in \"qSupported\" response"));
4054 name_end
= strchr (p
, '=');
4057 /* This is a name=value entry. */
4058 is_supported
= PACKET_ENABLE
;
4059 value
= name_end
+ 1;
4068 is_supported
= PACKET_ENABLE
;
4072 is_supported
= PACKET_DISABLE
;
4076 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4080 warning (_("unrecognized item \"%s\" "
4081 "in \"qSupported\" response"), p
);
4087 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4088 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4090 const struct protocol_feature
*feature
;
4093 feature
= &remote_protocol_features
[i
];
4094 feature
->func (feature
, is_supported
, value
);
4099 /* If we increased the packet size, make sure to increase the global
4100 buffer size also. We delay this until after parsing the entire
4101 qSupported packet, because this is the same buffer we were
4103 if (rs
->buf_size
< rs
->explicit_packet_size
)
4105 rs
->buf_size
= rs
->explicit_packet_size
;
4106 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4109 /* Handle the defaults for unmentioned features. */
4110 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4113 const struct protocol_feature
*feature
;
4115 feature
= &remote_protocol_features
[i
];
4116 feature
->func (feature
, feature
->default_support
, NULL
);
4120 /* Remove any of the remote.c targets from target stack. Upper targets depend
4121 on it so remove them first. */
4124 remote_unpush_target (void)
4126 pop_all_targets_above (process_stratum
- 1);
4130 remote_open_1 (char *name
, int from_tty
,
4131 struct target_ops
*target
, int extended_p
)
4133 struct remote_state
*rs
= get_remote_state ();
4136 error (_("To open a remote debug connection, you need to specify what\n"
4137 "serial device is attached to the remote system\n"
4138 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4140 /* See FIXME above. */
4141 if (!target_async_permitted
)
4142 wait_forever_enabled_p
= 1;
4144 /* If we're connected to a running target, target_preopen will kill it.
4145 Ask this question first, before target_preopen has a chance to kill
4147 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4150 && !query (_("Already connected to a remote target. Disconnect? ")))
4151 error (_("Still connected."));
4154 /* Here the possibly existing remote target gets unpushed. */
4155 target_preopen (from_tty
);
4157 /* Make sure we send the passed signals list the next time we resume. */
4158 xfree (rs
->last_pass_packet
);
4159 rs
->last_pass_packet
= NULL
;
4161 /* Make sure we send the program signals list the next time we
4163 xfree (rs
->last_program_signals_packet
);
4164 rs
->last_program_signals_packet
= NULL
;
4166 remote_fileio_reset ();
4167 reopen_exec_file ();
4170 rs
->remote_desc
= remote_serial_open (name
);
4171 if (!rs
->remote_desc
)
4172 perror_with_name (name
);
4174 if (baud_rate
!= -1)
4176 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4178 /* The requested speed could not be set. Error out to
4179 top level after closing remote_desc. Take care to
4180 set remote_desc to NULL to avoid closing remote_desc
4182 serial_close (rs
->remote_desc
);
4183 rs
->remote_desc
= NULL
;
4184 perror_with_name (name
);
4188 serial_raw (rs
->remote_desc
);
4190 /* If there is something sitting in the buffer we might take it as a
4191 response to a command, which would be bad. */
4192 serial_flush_input (rs
->remote_desc
);
4196 puts_filtered ("Remote debugging using ");
4197 puts_filtered (name
);
4198 puts_filtered ("\n");
4200 push_target (target
); /* Switch to using remote target now. */
4202 /* Register extra event sources in the event loop. */
4203 remote_async_inferior_event_token
4204 = create_async_event_handler (remote_async_inferior_event_handler
,
4206 rs
->notif_state
= remote_notif_state_allocate ();
4208 /* Reset the target state; these things will be queried either by
4209 remote_query_supported or as they are needed. */
4210 reset_all_packet_configs_support ();
4211 rs
->cached_wait_status
= 0;
4212 rs
->explicit_packet_size
= 0;
4214 rs
->extended
= extended_p
;
4215 rs
->waiting_for_stop_reply
= 0;
4216 rs
->ctrlc_pending_p
= 0;
4218 rs
->general_thread
= not_sent_ptid
;
4219 rs
->continue_thread
= not_sent_ptid
;
4220 rs
->remote_traceframe_number
= -1;
4222 /* Probe for ability to use "ThreadInfo" query, as required. */
4223 rs
->use_threadinfo_query
= 1;
4224 rs
->use_threadextra_query
= 1;
4226 if (target_async_permitted
)
4228 /* With this target we start out by owning the terminal. */
4229 remote_async_terminal_ours_p
= 1;
4231 /* FIXME: cagney/1999-09-23: During the initial connection it is
4232 assumed that the target is already ready and able to respond to
4233 requests. Unfortunately remote_start_remote() eventually calls
4234 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4235 around this. Eventually a mechanism that allows
4236 wait_for_inferior() to expect/get timeouts will be
4238 wait_forever_enabled_p
= 0;
4241 /* First delete any symbols previously loaded from shared libraries. */
4242 no_shared_libraries (NULL
, 0);
4245 init_thread_list ();
4247 /* Start the remote connection. If error() or QUIT, discard this
4248 target (we'd otherwise be in an inconsistent state) and then
4249 propogate the error on up the exception chain. This ensures that
4250 the caller doesn't stumble along blindly assuming that the
4251 function succeeded. The CLI doesn't have this problem but other
4252 UI's, such as MI do.
4254 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4255 this function should return an error indication letting the
4256 caller restore the previous state. Unfortunately the command
4257 ``target remote'' is directly wired to this function making that
4258 impossible. On a positive note, the CLI side of this problem has
4259 been fixed - the function set_cmd_context() makes it possible for
4260 all the ``target ....'' commands to share a common callback
4261 function. See cli-dump.c. */
4263 volatile struct gdb_exception ex
;
4265 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4267 remote_start_remote (from_tty
, target
, extended_p
);
4271 /* Pop the partially set up target - unless something else did
4272 already before throwing the exception. */
4273 if (rs
->remote_desc
!= NULL
)
4274 remote_unpush_target ();
4275 if (target_async_permitted
)
4276 wait_forever_enabled_p
= 1;
4277 throw_exception (ex
);
4281 if (target_async_permitted
)
4282 wait_forever_enabled_p
= 1;
4285 /* This takes a program previously attached to and detaches it. After
4286 this is done, GDB can be used to debug some other program. We
4287 better not have left any breakpoints in the target program or it'll
4288 die when it hits one. */
4291 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4293 int pid
= ptid_get_pid (inferior_ptid
);
4294 struct remote_state
*rs
= get_remote_state ();
4297 error (_("Argument given to \"detach\" when remotely debugging."));
4299 if (!target_has_execution
)
4300 error (_("No process to detach from."));
4304 char *exec_file
= get_exec_file (0);
4305 if (exec_file
== NULL
)
4307 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4308 target_pid_to_str (pid_to_ptid (pid
)));
4309 gdb_flush (gdb_stdout
);
4312 /* Tell the remote target to detach. */
4313 if (remote_multi_process_p (rs
))
4314 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4316 strcpy (rs
->buf
, "D");
4319 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4321 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4323 else if (rs
->buf
[0] == '\0')
4324 error (_("Remote doesn't know how to detach"));
4326 error (_("Can't detach process."));
4328 if (from_tty
&& !extended
)
4329 puts_filtered (_("Ending remote debugging.\n"));
4331 target_mourn_inferior ();
4335 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4337 remote_detach_1 (args
, from_tty
, 0);
4341 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4343 remote_detach_1 (args
, from_tty
, 1);
4346 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4349 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4352 error (_("Argument given to \"disconnect\" when remotely debugging."));
4354 /* Make sure we unpush even the extended remote targets; mourn
4355 won't do it. So call remote_mourn_1 directly instead of
4356 target_mourn_inferior. */
4357 remote_mourn_1 (target
);
4360 puts_filtered ("Ending remote debugging.\n");
4363 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4364 be chatty about it. */
4367 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4369 struct remote_state
*rs
= get_remote_state ();
4371 char *wait_status
= NULL
;
4373 pid
= parse_pid_to_attach (args
);
4375 /* Remote PID can be freely equal to getpid, do not check it here the same
4376 way as in other targets. */
4378 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
4379 error (_("This target does not support attaching to a process"));
4383 char *exec_file
= get_exec_file (0);
4386 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4387 target_pid_to_str (pid_to_ptid (pid
)));
4389 printf_unfiltered (_("Attaching to %s\n"),
4390 target_pid_to_str (pid_to_ptid (pid
)));
4392 gdb_flush (gdb_stdout
);
4395 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4399 switch (packet_ok (rs
->buf
,
4400 &remote_protocol_packets
[PACKET_vAttach
]))
4405 /* Save the reply for later. */
4406 wait_status
= alloca (strlen (rs
->buf
) + 1);
4407 strcpy (wait_status
, rs
->buf
);
4409 else if (strcmp (rs
->buf
, "OK") != 0)
4410 error (_("Attaching to %s failed with: %s"),
4411 target_pid_to_str (pid_to_ptid (pid
)),
4414 case PACKET_UNKNOWN
:
4415 error (_("This target does not support attaching to a process"));
4417 error (_("Attaching to %s failed"),
4418 target_pid_to_str (pid_to_ptid (pid
)));
4421 set_current_inferior (remote_add_inferior (0, pid
, 1));
4423 inferior_ptid
= pid_to_ptid (pid
);
4427 struct thread_info
*thread
;
4429 /* Get list of threads. */
4430 remote_threads_info (target
);
4432 thread
= first_thread_of_process (pid
);
4434 inferior_ptid
= thread
->ptid
;
4436 inferior_ptid
= pid_to_ptid (pid
);
4438 /* Invalidate our notion of the remote current thread. */
4439 record_currthread (rs
, minus_one_ptid
);
4443 /* Now, if we have thread information, update inferior_ptid. */
4444 inferior_ptid
= remote_current_thread (inferior_ptid
);
4446 /* Add the main thread to the thread list. */
4447 add_thread_silent (inferior_ptid
);
4450 /* Next, if the target can specify a description, read it. We do
4451 this before anything involving memory or registers. */
4452 target_find_description ();
4456 /* Use the previously fetched status. */
4457 gdb_assert (wait_status
!= NULL
);
4459 if (target_can_async_p ())
4461 struct notif_event
*reply
4462 = remote_notif_parse (¬if_client_stop
, wait_status
);
4464 push_stop_reply ((struct stop_reply
*) reply
);
4466 target_async (inferior_event_handler
, 0);
4470 gdb_assert (wait_status
!= NULL
);
4471 strcpy (rs
->buf
, wait_status
);
4472 rs
->cached_wait_status
= 1;
4476 gdb_assert (wait_status
== NULL
);
4480 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4482 extended_remote_attach_1 (ops
, args
, from_tty
);
4486 /* Check for the availability of vCont. This function should also check
4490 remote_vcont_probe (struct remote_state
*rs
)
4494 strcpy (rs
->buf
, "vCont?");
4496 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4499 /* Make sure that the features we assume are supported. */
4500 if (strncmp (buf
, "vCont", 5) == 0)
4503 int support_s
, support_S
, support_c
, support_C
;
4509 rs
->supports_vCont
.t
= 0;
4510 rs
->supports_vCont
.r
= 0;
4511 while (p
&& *p
== ';')
4514 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4516 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4518 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4520 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4522 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4523 rs
->supports_vCont
.t
= 1;
4524 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4525 rs
->supports_vCont
.r
= 1;
4527 p
= strchr (p
, ';');
4530 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4531 BUF will make packet_ok disable the packet. */
4532 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4536 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4539 /* Helper function for building "vCont" resumptions. Write a
4540 resumption to P. ENDP points to one-passed-the-end of the buffer
4541 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4542 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4543 resumed thread should be single-stepped and/or signalled. If PTID
4544 equals minus_one_ptid, then all threads are resumed; if PTID
4545 represents a process, then all threads of the process are resumed;
4546 the thread to be stepped and/or signalled is given in the global
4550 append_resumption (char *p
, char *endp
,
4551 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4553 struct remote_state
*rs
= get_remote_state ();
4555 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4556 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4558 /* GDB is willing to range step. */
4559 && use_range_stepping
4560 /* Target supports range stepping. */
4561 && rs
->supports_vCont
.r
4562 /* We don't currently support range stepping multiple
4563 threads with a wildcard (though the protocol allows it,
4564 so stubs shouldn't make an active effort to forbid
4566 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4568 struct thread_info
*tp
;
4570 if (ptid_equal (ptid
, minus_one_ptid
))
4572 /* If we don't know about the target thread's tid, then
4573 we're resuming magic_null_ptid (see caller). */
4574 tp
= find_thread_ptid (magic_null_ptid
);
4577 tp
= find_thread_ptid (ptid
);
4578 gdb_assert (tp
!= NULL
);
4580 if (tp
->control
.may_range_step
)
4582 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4584 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4585 phex_nz (tp
->control
.step_range_start
,
4587 phex_nz (tp
->control
.step_range_end
,
4591 p
+= xsnprintf (p
, endp
- p
, ";s");
4594 p
+= xsnprintf (p
, endp
- p
, ";s");
4595 else if (siggnal
!= GDB_SIGNAL_0
)
4596 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4598 p
+= xsnprintf (p
, endp
- p
, ";c");
4600 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4604 /* All (-1) threads of process. */
4605 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4607 p
+= xsnprintf (p
, endp
- p
, ":");
4608 p
= write_ptid (p
, endp
, nptid
);
4610 else if (!ptid_equal (ptid
, minus_one_ptid
))
4612 p
+= xsnprintf (p
, endp
- p
, ":");
4613 p
= write_ptid (p
, endp
, ptid
);
4619 /* Append a vCont continue-with-signal action for threads that have a
4620 non-zero stop signal. */
4623 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4625 struct thread_info
*thread
;
4627 ALL_THREADS (thread
)
4628 if (ptid_match (thread
->ptid
, ptid
)
4629 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4630 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4631 && signal_pass_state (thread
->suspend
.stop_signal
))
4633 p
= append_resumption (p
, endp
, thread
->ptid
,
4634 0, thread
->suspend
.stop_signal
);
4635 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4641 /* Resume the remote inferior by using a "vCont" packet. The thread
4642 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4643 resumed thread should be single-stepped and/or signalled. If PTID
4644 equals minus_one_ptid, then all threads are resumed; the thread to
4645 be stepped and/or signalled is given in the global INFERIOR_PTID.
4646 This function returns non-zero iff it resumes the inferior.
4648 This function issues a strict subset of all possible vCont commands at the
4652 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4654 struct remote_state
*rs
= get_remote_state ();
4658 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4659 remote_vcont_probe (rs
);
4661 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
4665 endp
= rs
->buf
+ get_remote_packet_size ();
4667 /* If we could generate a wider range of packets, we'd have to worry
4668 about overflowing BUF. Should there be a generic
4669 "multi-part-packet" packet? */
4671 p
+= xsnprintf (p
, endp
- p
, "vCont");
4673 if (ptid_equal (ptid
, magic_null_ptid
))
4675 /* MAGIC_NULL_PTID means that we don't have any active threads,
4676 so we don't have any TID numbers the inferior will
4677 understand. Make sure to only send forms that do not specify
4679 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4681 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4683 /* Resume all threads (of all processes, or of a single
4684 process), with preference for INFERIOR_PTID. This assumes
4685 inferior_ptid belongs to the set of all threads we are about
4687 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4689 /* Step inferior_ptid, with or without signal. */
4690 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4693 /* Also pass down any pending signaled resumption for other
4694 threads not the current. */
4695 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4697 /* And continue others without a signal. */
4698 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4702 /* Scheduler locking; resume only PTID. */
4703 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4706 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4711 /* In non-stop, the stub replies to vCont with "OK". The stop
4712 reply will be reported asynchronously by means of a `%Stop'
4714 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4715 if (strcmp (rs
->buf
, "OK") != 0)
4716 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4722 /* Tell the remote machine to resume. */
4725 remote_resume (struct target_ops
*ops
,
4726 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4728 struct remote_state
*rs
= get_remote_state ();
4731 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4732 (explained in remote-notif.c:handle_notification) so
4733 remote_notif_process is not called. We need find a place where
4734 it is safe to start a 'vNotif' sequence. It is good to do it
4735 before resuming inferior, because inferior was stopped and no RSP
4736 traffic at that moment. */
4738 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4740 rs
->last_sent_signal
= siggnal
;
4741 rs
->last_sent_step
= step
;
4743 /* The vCont packet doesn't need to specify threads via Hc. */
4744 /* No reverse support (yet) for vCont. */
4745 if (execution_direction
!= EXEC_REVERSE
)
4746 if (remote_vcont_resume (ptid
, step
, siggnal
))
4749 /* All other supported resume packets do use Hc, so set the continue
4751 if (ptid_equal (ptid
, minus_one_ptid
))
4752 set_continue_thread (any_thread_ptid
);
4754 set_continue_thread (ptid
);
4757 if (execution_direction
== EXEC_REVERSE
)
4759 /* We don't pass signals to the target in reverse exec mode. */
4760 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4761 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4764 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
4765 error (_("Remote reverse-step not supported."));
4766 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
4767 error (_("Remote reverse-continue not supported."));
4769 strcpy (buf
, step
? "bs" : "bc");
4771 else if (siggnal
!= GDB_SIGNAL_0
)
4773 buf
[0] = step
? 'S' : 'C';
4774 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4775 buf
[2] = tohex (((int) siggnal
) & 0xf);
4779 strcpy (buf
, step
? "s" : "c");
4784 /* We are about to start executing the inferior, let's register it
4785 with the event loop. NOTE: this is the one place where all the
4786 execution commands end up. We could alternatively do this in each
4787 of the execution commands in infcmd.c. */
4788 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4789 into infcmd.c in order to allow inferior function calls to work
4790 NOT asynchronously. */
4791 if (target_can_async_p ())
4792 target_async (inferior_event_handler
, 0);
4794 /* We've just told the target to resume. The remote server will
4795 wait for the inferior to stop, and then send a stop reply. In
4796 the mean time, we can't start another command/query ourselves
4797 because the stub wouldn't be ready to process it. This applies
4798 only to the base all-stop protocol, however. In non-stop (which
4799 only supports vCont), the stub replies with an "OK", and is
4800 immediate able to process further serial input. */
4802 rs
->waiting_for_stop_reply
= 1;
4806 /* Set up the signal handler for SIGINT, while the target is
4807 executing, ovewriting the 'regular' SIGINT signal handler. */
4809 async_initialize_sigint_signal_handler (void)
4811 signal (SIGINT
, async_handle_remote_sigint
);
4814 /* Signal handler for SIGINT, while the target is executing. */
4816 async_handle_remote_sigint (int sig
)
4818 signal (sig
, async_handle_remote_sigint_twice
);
4819 mark_async_signal_handler (async_sigint_remote_token
);
4822 /* Signal handler for SIGINT, installed after SIGINT has already been
4823 sent once. It will take effect the second time that the user sends
4826 async_handle_remote_sigint_twice (int sig
)
4828 signal (sig
, async_handle_remote_sigint
);
4829 mark_async_signal_handler (async_sigint_remote_twice_token
);
4832 /* Perform the real interruption of the target execution, in response
4835 async_remote_interrupt (gdb_client_data arg
)
4838 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4840 target_stop (inferior_ptid
);
4843 /* Perform interrupt, if the first attempt did not succeed. Just give
4844 up on the target alltogether. */
4846 async_remote_interrupt_twice (gdb_client_data arg
)
4849 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4854 /* Reinstall the usual SIGINT handlers, after the target has
4857 async_cleanup_sigint_signal_handler (void *dummy
)
4859 signal (SIGINT
, handle_sigint
);
4862 /* Send ^C to target to halt it. Target will respond, and send us a
4864 static void (*ofunc
) (int);
4866 /* The command line interface's stop routine. This function is installed
4867 as a signal handler for SIGINT. The first time a user requests a
4868 stop, we call remote_stop to send a break or ^C. If there is no
4869 response from the target (it didn't stop when the user requested it),
4870 we ask the user if he'd like to detach from the target. */
4872 sync_remote_interrupt (int signo
)
4874 /* If this doesn't work, try more severe steps. */
4875 signal (signo
, sync_remote_interrupt_twice
);
4877 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
4880 /* The user typed ^C twice. */
4883 sync_remote_interrupt_twice (int signo
)
4885 signal (signo
, ofunc
);
4886 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
4887 signal (signo
, sync_remote_interrupt
);
4890 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4891 thread, all threads of a remote process, or all threads of all
4895 remote_stop_ns (ptid_t ptid
)
4897 struct remote_state
*rs
= get_remote_state ();
4899 char *endp
= rs
->buf
+ get_remote_packet_size ();
4901 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
4902 remote_vcont_probe (rs
);
4904 if (!rs
->supports_vCont
.t
)
4905 error (_("Remote server does not support stopping threads"));
4907 if (ptid_equal (ptid
, minus_one_ptid
)
4908 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4909 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4914 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4916 if (ptid_is_pid (ptid
))
4917 /* All (-1) threads of process. */
4918 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4921 /* Small optimization: if we already have a stop reply for
4922 this thread, no use in telling the stub we want this
4924 if (peek_stop_reply (ptid
))
4930 write_ptid (p
, endp
, nptid
);
4933 /* In non-stop, we get an immediate OK reply. The stop reply will
4934 come in asynchronously by notification. */
4936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4937 if (strcmp (rs
->buf
, "OK") != 0)
4938 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4941 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4942 remote target. It is undefined which thread of which process
4943 reports the stop. */
4946 remote_stop_as (ptid_t ptid
)
4948 struct remote_state
*rs
= get_remote_state ();
4950 rs
->ctrlc_pending_p
= 1;
4952 /* If the inferior is stopped already, but the core didn't know
4953 about it yet, just ignore the request. The cached wait status
4954 will be collected in remote_wait. */
4955 if (rs
->cached_wait_status
)
4958 /* Send interrupt_sequence to remote target. */
4959 send_interrupt_sequence ();
4962 /* This is the generic stop called via the target vector. When a target
4963 interrupt is requested, either by the command line or the GUI, we
4964 will eventually end up here. */
4967 remote_stop (struct target_ops
*self
, ptid_t ptid
)
4970 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4973 remote_stop_ns (ptid
);
4975 remote_stop_as (ptid
);
4978 /* Ask the user what to do when an interrupt is received. */
4981 interrupt_query (void)
4983 target_terminal_ours ();
4985 if (target_can_async_p ())
4987 signal (SIGINT
, handle_sigint
);
4992 if (query (_("Interrupted while waiting for the program.\n\
4993 Give up (and stop debugging it)? ")))
4995 remote_unpush_target ();
5000 target_terminal_inferior ();
5003 /* Enable/disable target terminal ownership. Most targets can use
5004 terminal groups to control terminal ownership. Remote targets are
5005 different in that explicit transfer of ownership to/from GDB/target
5009 remote_terminal_inferior (struct target_ops
*self
)
5011 if (!target_async_permitted
)
5012 /* Nothing to do. */
5015 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5016 idempotent. The event-loop GDB talking to an asynchronous target
5017 with a synchronous command calls this function from both
5018 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5019 transfer the terminal to the target when it shouldn't this guard
5021 if (!remote_async_terminal_ours_p
)
5023 delete_file_handler (input_fd
);
5024 remote_async_terminal_ours_p
= 0;
5025 async_initialize_sigint_signal_handler ();
5026 /* NOTE: At this point we could also register our selves as the
5027 recipient of all input. Any characters typed could then be
5028 passed on down to the target. */
5032 remote_terminal_ours (struct target_ops
*self
)
5034 if (!target_async_permitted
)
5035 /* Nothing to do. */
5038 /* See FIXME in remote_terminal_inferior. */
5039 if (remote_async_terminal_ours_p
)
5041 async_cleanup_sigint_signal_handler (NULL
);
5042 add_file_handler (input_fd
, stdin_event_handler
, 0);
5043 remote_async_terminal_ours_p
= 1;
5047 remote_console_output (char *msg
)
5051 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5054 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5058 fputs_unfiltered (tb
, gdb_stdtarg
);
5060 gdb_flush (gdb_stdtarg
);
5063 typedef struct cached_reg
5066 gdb_byte data
[MAX_REGISTER_SIZE
];
5069 DEF_VEC_O(cached_reg_t
);
5071 typedef struct stop_reply
5073 struct notif_event base
;
5075 /* The identifier of the thread about this event */
5078 /* The remote state this event is associated with. When the remote
5079 connection, represented by a remote_state object, is closed,
5080 all the associated stop_reply events should be released. */
5081 struct remote_state
*rs
;
5083 struct target_waitstatus ws
;
5085 /* Expedited registers. This makes remote debugging a bit more
5086 efficient for those targets that provide critical registers as
5087 part of their normal status mechanism (as another roundtrip to
5088 fetch them is avoided). */
5089 VEC(cached_reg_t
) *regcache
;
5091 int stopped_by_watchpoint_p
;
5092 CORE_ADDR watch_data_address
;
5097 DECLARE_QUEUE_P (stop_reply_p
);
5098 DEFINE_QUEUE_P (stop_reply_p
);
5099 /* The list of already fetched and acknowledged stop events. This
5100 queue is used for notification Stop, and other notifications
5101 don't need queue for their events, because the notification events
5102 of Stop can't be consumed immediately, so that events should be
5103 queued first, and be consumed by remote_wait_{ns,as} one per
5104 time. Other notifications can consume their events immediately,
5105 so queue is not needed for them. */
5106 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5109 stop_reply_xfree (struct stop_reply
*r
)
5111 notif_event_xfree ((struct notif_event
*) r
);
5115 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5116 struct notif_event
*event
)
5118 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5122 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5123 struct notif_event
*event
)
5125 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5128 putpkt ((char *) self
->ack_command
);
5130 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5131 /* We got an unknown stop reply. */
5132 error (_("Unknown stop reply"));
5134 push_stop_reply (stop_reply
);
5138 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5140 /* We can't get pending events in remote_notif_process for
5141 notification stop, and we have to do this in remote_wait_ns
5142 instead. If we fetch all queued events from stub, remote stub
5143 may exit and we have no chance to process them back in
5145 mark_async_event_handler (remote_async_inferior_event_token
);
5150 stop_reply_dtr (struct notif_event
*event
)
5152 struct stop_reply
*r
= (struct stop_reply
*) event
;
5154 VEC_free (cached_reg_t
, r
->regcache
);
5157 static struct notif_event
*
5158 remote_notif_stop_alloc_reply (void)
5160 struct notif_event
*r
5161 = (struct notif_event
*) XNEW (struct stop_reply
);
5163 r
->dtr
= stop_reply_dtr
;
5168 /* A client of notification Stop. */
5170 struct notif_client notif_client_stop
=
5174 remote_notif_stop_parse
,
5175 remote_notif_stop_ack
,
5176 remote_notif_stop_can_get_pending_events
,
5177 remote_notif_stop_alloc_reply
,
5181 /* A parameter to pass data in and out. */
5183 struct queue_iter_param
5186 struct stop_reply
*output
;
5189 /* Remove stop replies in the queue if its pid is equal to the given
5193 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5194 QUEUE_ITER (stop_reply_p
) *iter
,
5198 struct queue_iter_param
*param
= data
;
5199 struct inferior
*inf
= param
->input
;
5201 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5203 stop_reply_xfree (event
);
5204 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5210 /* Discard all pending stop replies of inferior INF. */
5213 discard_pending_stop_replies (struct inferior
*inf
)
5216 struct queue_iter_param param
;
5217 struct stop_reply
*reply
;
5218 struct remote_state
*rs
= get_remote_state ();
5219 struct remote_notif_state
*rns
= rs
->notif_state
;
5221 /* This function can be notified when an inferior exists. When the
5222 target is not remote, the notification state is NULL. */
5223 if (rs
->remote_desc
== NULL
)
5226 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5228 /* Discard the in-flight notification. */
5229 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5231 stop_reply_xfree (reply
);
5232 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5236 param
.output
= NULL
;
5237 /* Discard the stop replies we have already pulled with
5239 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5240 remove_stop_reply_for_inferior
, ¶m
);
5243 /* If its remote state is equal to the given remote state,
5244 remove EVENT from the stop reply queue. */
5247 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5248 QUEUE_ITER (stop_reply_p
) *iter
,
5252 struct queue_iter_param
*param
= data
;
5253 struct remote_state
*rs
= param
->input
;
5255 if (event
->rs
== rs
)
5257 stop_reply_xfree (event
);
5258 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5264 /* Discard the stop replies for RS in stop_reply_queue. */
5267 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5269 struct queue_iter_param param
;
5272 param
.output
= NULL
;
5273 /* Discard the stop replies we have already pulled with
5275 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5276 remove_stop_reply_of_remote_state
, ¶m
);
5279 /* A parameter to pass data in and out. */
5282 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5283 QUEUE_ITER (stop_reply_p
) *iter
,
5287 struct queue_iter_param
*param
= data
;
5288 ptid_t
*ptid
= param
->input
;
5290 if (ptid_match (event
->ptid
, *ptid
))
5292 param
->output
= event
;
5293 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5300 /* Remove the first reply in 'stop_reply_queue' which matches
5303 static struct stop_reply
*
5304 remote_notif_remove_queued_reply (ptid_t ptid
)
5306 struct queue_iter_param param
;
5308 param
.input
= &ptid
;
5309 param
.output
= NULL
;
5311 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5312 remote_notif_remove_once_on_match
, ¶m
);
5314 fprintf_unfiltered (gdb_stdlog
,
5315 "notif: discard queued event: 'Stop' in %s\n",
5316 target_pid_to_str (ptid
));
5318 return param
.output
;
5321 /* Look for a queued stop reply belonging to PTID. If one is found,
5322 remove it from the queue, and return it. Returns NULL if none is
5323 found. If there are still queued events left to process, tell the
5324 event loop to get back to target_wait soon. */
5326 static struct stop_reply
*
5327 queued_stop_reply (ptid_t ptid
)
5329 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5331 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5332 /* There's still at least an event left. */
5333 mark_async_event_handler (remote_async_inferior_event_token
);
5338 /* Push a fully parsed stop reply in the stop reply queue. Since we
5339 know that we now have at least one queued event left to pass to the
5340 core side, tell the event loop to get back to target_wait soon. */
5343 push_stop_reply (struct stop_reply
*new_event
)
5345 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5348 fprintf_unfiltered (gdb_stdlog
,
5349 "notif: push 'Stop' %s to queue %d\n",
5350 target_pid_to_str (new_event
->ptid
),
5351 QUEUE_length (stop_reply_p
,
5354 mark_async_event_handler (remote_async_inferior_event_token
);
5358 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5359 QUEUE_ITER (stop_reply_p
) *iter
,
5360 struct stop_reply
*event
,
5363 ptid_t
*ptid
= data
;
5365 return !(ptid_equal (*ptid
, event
->ptid
)
5366 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5369 /* Returns true if we have a stop reply for PTID. */
5372 peek_stop_reply (ptid_t ptid
)
5374 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5375 stop_reply_match_ptid_and_ws
, &ptid
);
5378 /* Parse the stop reply in BUF. Either the function succeeds, and the
5379 result is stored in EVENT, or throws an error. */
5382 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5384 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5388 event
->ptid
= null_ptid
;
5389 event
->rs
= get_remote_state ();
5390 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5391 event
->ws
.value
.integer
= 0;
5392 event
->stopped_by_watchpoint_p
= 0;
5393 event
->regcache
= NULL
;
5398 case 'T': /* Status with PC, SP, FP, ... */
5399 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5400 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5402 n... = register number
5403 r... = register contents
5406 p
= &buf
[3]; /* after Txx */
5414 /* If the packet contains a register number, save it in
5415 pnum and set p1 to point to the character following it.
5416 Otherwise p1 points to p. */
5418 /* If this packet is an awatch packet, don't parse the 'a'
5419 as a register number. */
5421 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5422 && strncmp (p
, "core", strlen ("core") != 0))
5424 /* Read the ``P'' register number. */
5425 pnum
= strtol (p
, &p_temp
, 16);
5431 if (p1
== p
) /* No register number present here. */
5433 p1
= strchr (p
, ':');
5435 error (_("Malformed packet(a) (missing colon): %s\n\
5438 if (strncmp (p
, "thread", p1
- p
) == 0)
5439 event
->ptid
= read_ptid (++p1
, &p
);
5440 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5441 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5442 || (strncmp (p
, "awatch", p1
- p
) == 0))
5444 event
->stopped_by_watchpoint_p
= 1;
5445 p
= unpack_varlen_hex (++p1
, &addr
);
5446 event
->watch_data_address
= (CORE_ADDR
) addr
;
5448 else if (strncmp (p
, "library", p1
- p
) == 0)
5452 while (*p_temp
&& *p_temp
!= ';')
5455 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5458 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5460 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5461 /* p1 will indicate "begin" or "end", but it makes
5462 no difference for now, so ignore it. */
5463 p_temp
= strchr (p1
+ 1, ';');
5467 else if (strncmp (p
, "core", p1
- p
) == 0)
5471 p
= unpack_varlen_hex (++p1
, &c
);
5476 /* Silently skip unknown optional info. */
5477 p_temp
= strchr (p1
+ 1, ';');
5484 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5485 cached_reg_t cached_reg
;
5490 error (_("Malformed packet(b) (missing colon): %s\n\
5496 error (_("Remote sent bad register number %s: %s\n\
5498 hex_string (pnum
), p
, buf
);
5500 cached_reg
.num
= reg
->regnum
;
5502 fieldsize
= hex2bin (p
, cached_reg
.data
,
5503 register_size (target_gdbarch (),
5506 if (fieldsize
< register_size (target_gdbarch (),
5508 warning (_("Remote reply is too short: %s"), buf
);
5510 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5514 error (_("Remote register badly formatted: %s\nhere: %s"),
5519 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5523 case 'S': /* Old style status, just signal only. */
5527 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5528 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5529 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5530 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5532 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5535 case 'W': /* Target exited. */
5542 /* GDB used to accept only 2 hex chars here. Stubs should
5543 only send more if they detect GDB supports multi-process
5545 p
= unpack_varlen_hex (&buf
[1], &value
);
5549 /* The remote process exited. */
5550 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5551 event
->ws
.value
.integer
= value
;
5555 /* The remote process exited with a signal. */
5556 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5557 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5558 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5560 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5563 /* If no process is specified, assume inferior_ptid. */
5564 pid
= ptid_get_pid (inferior_ptid
);
5573 else if (strncmp (p
,
5574 "process:", sizeof ("process:") - 1) == 0)
5578 p
+= sizeof ("process:") - 1;
5579 unpack_varlen_hex (p
, &upid
);
5583 error (_("unknown stop reply packet: %s"), buf
);
5586 error (_("unknown stop reply packet: %s"), buf
);
5587 event
->ptid
= pid_to_ptid (pid
);
5592 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5593 error (_("No process or thread specified in stop reply: %s"), buf
);
5596 /* When the stub wants to tell GDB about a new notification reply, it
5597 sends a notification (%Stop, for example). Those can come it at
5598 any time, hence, we have to make sure that any pending
5599 putpkt/getpkt sequence we're making is finished, before querying
5600 the stub for more events with the corresponding ack command
5601 (vStopped, for example). E.g., if we started a vStopped sequence
5602 immediately upon receiving the notification, something like this
5610 1.6) <-- (registers reply to step #1.3)
5612 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5615 To solve this, whenever we parse a %Stop notification successfully,
5616 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5617 doing whatever we were doing:
5623 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5624 2.5) <-- (registers reply to step #2.3)
5626 Eventualy after step #2.5, we return to the event loop, which
5627 notices there's an event on the
5628 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5629 associated callback --- the function below. At this point, we're
5630 always safe to start a vStopped sequence. :
5633 2.7) <-- T05 thread:2
5639 remote_notif_get_pending_events (struct notif_client
*nc
)
5641 struct remote_state
*rs
= get_remote_state ();
5643 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5646 fprintf_unfiltered (gdb_stdlog
,
5647 "notif: process: '%s' ack pending event\n",
5651 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5652 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5656 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5657 if (strcmp (rs
->buf
, "OK") == 0)
5660 remote_notif_ack (nc
, rs
->buf
);
5666 fprintf_unfiltered (gdb_stdlog
,
5667 "notif: process: '%s' no pending reply\n",
5672 /* Called when it is decided that STOP_REPLY holds the info of the
5673 event that is to be returned to the core. This function always
5674 destroys STOP_REPLY. */
5677 process_stop_reply (struct stop_reply
*stop_reply
,
5678 struct target_waitstatus
*status
)
5682 *status
= stop_reply
->ws
;
5683 ptid
= stop_reply
->ptid
;
5685 /* If no thread/process was reported by the stub, assume the current
5687 if (ptid_equal (ptid
, null_ptid
))
5688 ptid
= inferior_ptid
;
5690 if (status
->kind
!= TARGET_WAITKIND_EXITED
5691 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5693 struct remote_state
*rs
= get_remote_state ();
5695 /* Expedited registers. */
5696 if (stop_reply
->regcache
)
5698 struct regcache
*regcache
5699 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5704 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5706 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5707 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5710 rs
->remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5711 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5713 remote_notice_new_inferior (ptid
, 0);
5714 demand_private_info (ptid
)->core
= stop_reply
->core
;
5717 stop_reply_xfree (stop_reply
);
5721 /* The non-stop mode version of target_wait. */
5724 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5726 struct remote_state
*rs
= get_remote_state ();
5727 struct stop_reply
*stop_reply
;
5731 /* If in non-stop mode, get out of getpkt even if a
5732 notification is received. */
5734 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5735 0 /* forever */, &is_notif
);
5738 if (ret
!= -1 && !is_notif
)
5741 case 'E': /* Error of some sort. */
5742 /* We're out of sync with the target now. Did it continue
5743 or not? We can't tell which thread it was in non-stop,
5744 so just ignore this. */
5745 warning (_("Remote failure reply: %s"), rs
->buf
);
5747 case 'O': /* Console output. */
5748 remote_console_output (rs
->buf
+ 1);
5751 warning (_("Invalid remote reply: %s"), rs
->buf
);
5755 /* Acknowledge a pending stop reply that may have arrived in the
5757 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5758 remote_notif_get_pending_events (¬if_client_stop
);
5760 /* If indeed we noticed a stop reply, we're done. */
5761 stop_reply
= queued_stop_reply (ptid
);
5762 if (stop_reply
!= NULL
)
5763 return process_stop_reply (stop_reply
, status
);
5765 /* Still no event. If we're just polling for an event, then
5766 return to the event loop. */
5767 if (options
& TARGET_WNOHANG
)
5769 status
->kind
= TARGET_WAITKIND_IGNORE
;
5770 return minus_one_ptid
;
5773 /* Otherwise do a blocking wait. */
5774 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5775 1 /* forever */, &is_notif
);
5779 /* Wait until the remote machine stops, then return, storing status in
5780 STATUS just as `wait' would. */
5783 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5785 struct remote_state
*rs
= get_remote_state ();
5786 ptid_t event_ptid
= null_ptid
;
5788 struct stop_reply
*stop_reply
;
5792 status
->kind
= TARGET_WAITKIND_IGNORE
;
5793 status
->value
.integer
= 0;
5795 stop_reply
= queued_stop_reply (ptid
);
5796 if (stop_reply
!= NULL
)
5797 return process_stop_reply (stop_reply
, status
);
5799 if (rs
->cached_wait_status
)
5800 /* Use the cached wait status, but only once. */
5801 rs
->cached_wait_status
= 0;
5807 if (!target_is_async_p ())
5809 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5810 /* If the user hit C-c before this packet, or between packets,
5811 pretend that it was hit right here. */
5812 if (check_quit_flag ())
5815 sync_remote_interrupt (SIGINT
);
5819 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5820 _never_ wait for ever -> test on target_is_async_p().
5821 However, before we do that we need to ensure that the caller
5822 knows how to take the target into/out of async mode. */
5823 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5824 wait_forever_enabled_p
, &is_notif
);
5826 if (!target_is_async_p ())
5827 signal (SIGINT
, ofunc
);
5829 /* GDB gets a notification. Return to core as this event is
5831 if (ret
!= -1 && is_notif
)
5832 return minus_one_ptid
;
5837 rs
->remote_stopped_by_watchpoint_p
= 0;
5839 /* We got something. */
5840 rs
->waiting_for_stop_reply
= 0;
5842 /* Assume that the target has acknowledged Ctrl-C unless we receive
5843 an 'F' or 'O' packet. */
5844 if (buf
[0] != 'F' && buf
[0] != 'O')
5845 rs
->ctrlc_pending_p
= 0;
5849 case 'E': /* Error of some sort. */
5850 /* We're out of sync with the target now. Did it continue or
5851 not? Not is more likely, so report a stop. */
5852 warning (_("Remote failure reply: %s"), buf
);
5853 status
->kind
= TARGET_WAITKIND_STOPPED
;
5854 status
->value
.sig
= GDB_SIGNAL_0
;
5856 case 'F': /* File-I/O request. */
5857 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5858 rs
->ctrlc_pending_p
= 0;
5860 case 'T': case 'S': case 'X': case 'W':
5862 struct stop_reply
*stop_reply
5863 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5866 event_ptid
= process_stop_reply (stop_reply
, status
);
5869 case 'O': /* Console output. */
5870 remote_console_output (buf
+ 1);
5872 /* The target didn't really stop; keep waiting. */
5873 rs
->waiting_for_stop_reply
= 1;
5877 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
5879 /* Zero length reply means that we tried 'S' or 'C' and the
5880 remote system doesn't support it. */
5881 target_terminal_ours_for_output ();
5883 ("Can't send signals to this remote system. %s not sent.\n",
5884 gdb_signal_to_name (rs
->last_sent_signal
));
5885 rs
->last_sent_signal
= GDB_SIGNAL_0
;
5886 target_terminal_inferior ();
5888 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
5889 putpkt ((char *) buf
);
5891 /* We just told the target to resume, so a stop reply is in
5893 rs
->waiting_for_stop_reply
= 1;
5896 /* else fallthrough */
5898 warning (_("Invalid remote reply: %s"), buf
);
5900 rs
->waiting_for_stop_reply
= 1;
5904 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5906 /* Nothing interesting happened. If we're doing a non-blocking
5907 poll, we're done. Otherwise, go back to waiting. */
5908 if (options
& TARGET_WNOHANG
)
5909 return minus_one_ptid
;
5913 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5914 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5916 if (!ptid_equal (event_ptid
, null_ptid
))
5917 record_currthread (rs
, event_ptid
);
5919 event_ptid
= inferior_ptid
;
5922 /* A process exit. Invalidate our notion of current thread. */
5923 record_currthread (rs
, minus_one_ptid
);
5928 /* Wait until the remote machine stops, then return, storing status in
5929 STATUS just as `wait' would. */
5932 remote_wait (struct target_ops
*ops
,
5933 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5938 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5940 event_ptid
= remote_wait_as (ptid
, status
, options
);
5942 if (target_can_async_p ())
5944 /* If there are are events left in the queue tell the event loop
5946 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5947 mark_async_event_handler (remote_async_inferior_event_token
);
5953 /* Fetch a single register using a 'p' packet. */
5956 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5958 struct remote_state
*rs
= get_remote_state ();
5960 char regp
[MAX_REGISTER_SIZE
];
5963 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
5966 if (reg
->pnum
== -1)
5971 p
+= hexnumstr (p
, reg
->pnum
);
5974 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5978 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5982 case PACKET_UNKNOWN
:
5985 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5986 gdbarch_register_name (get_regcache_arch (regcache
),
5991 /* If this register is unfetchable, tell the regcache. */
5994 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5998 /* Otherwise, parse and supply the value. */
6004 error (_("fetch_register_using_p: early buf termination"));
6006 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6009 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6013 /* Fetch the registers included in the target's 'g' packet. */
6016 send_g_packet (void)
6018 struct remote_state
*rs
= get_remote_state ();
6021 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6022 remote_send (&rs
->buf
, &rs
->buf_size
);
6024 /* We can get out of synch in various cases. If the first character
6025 in the buffer is not a hex character, assume that has happened
6026 and try to fetch another packet to read. */
6027 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6028 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6029 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6030 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6033 fprintf_unfiltered (gdb_stdlog
,
6034 "Bad register packet; fetching a new packet\n");
6035 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6038 buf_len
= strlen (rs
->buf
);
6040 /* Sanity check the received packet. */
6041 if (buf_len
% 2 != 0)
6042 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6048 process_g_packet (struct regcache
*regcache
)
6050 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6051 struct remote_state
*rs
= get_remote_state ();
6052 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6057 buf_len
= strlen (rs
->buf
);
6059 /* Further sanity checks, with knowledge of the architecture. */
6060 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6061 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6063 /* Save the size of the packet sent to us by the target. It is used
6064 as a heuristic when determining the max size of packets that the
6065 target can safely receive. */
6066 if (rsa
->actual_register_packet_size
== 0)
6067 rsa
->actual_register_packet_size
= buf_len
;
6069 /* If this is smaller than we guessed the 'g' packet would be,
6070 update our records. A 'g' reply that doesn't include a register's
6071 value implies either that the register is not available, or that
6072 the 'p' packet must be used. */
6073 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6075 rsa
->sizeof_g_packet
= buf_len
/ 2;
6077 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6079 if (rsa
->regs
[i
].pnum
== -1)
6082 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6083 rsa
->regs
[i
].in_g_packet
= 0;
6085 rsa
->regs
[i
].in_g_packet
= 1;
6089 regs
= alloca (rsa
->sizeof_g_packet
);
6091 /* Unimplemented registers read as all bits zero. */
6092 memset (regs
, 0, rsa
->sizeof_g_packet
);
6094 /* Reply describes registers byte by byte, each byte encoded as two
6095 hex characters. Suck them all up, then supply them to the
6096 register cacheing/storage mechanism. */
6099 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6101 if (p
[0] == 0 || p
[1] == 0)
6102 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6103 internal_error (__FILE__
, __LINE__
,
6104 _("unexpected end of 'g' packet reply"));
6106 if (p
[0] == 'x' && p
[1] == 'x')
6107 regs
[i
] = 0; /* 'x' */
6109 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6113 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6115 struct packet_reg
*r
= &rsa
->regs
[i
];
6119 if (r
->offset
* 2 >= strlen (rs
->buf
))
6120 /* This shouldn't happen - we adjusted in_g_packet above. */
6121 internal_error (__FILE__
, __LINE__
,
6122 _("unexpected end of 'g' packet reply"));
6123 else if (rs
->buf
[r
->offset
* 2] == 'x')
6125 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6126 /* The register isn't available, mark it as such (at
6127 the same time setting the value to zero). */
6128 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6131 regcache_raw_supply (regcache
, r
->regnum
,
6138 fetch_registers_using_g (struct regcache
*regcache
)
6141 process_g_packet (regcache
);
6144 /* Make the remote selected traceframe match GDB's selected
6148 set_remote_traceframe (void)
6151 struct remote_state
*rs
= get_remote_state ();
6153 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6156 /* Avoid recursion, remote_trace_find calls us again. */
6157 rs
->remote_traceframe_number
= get_traceframe_number ();
6159 newnum
= target_trace_find (tfind_number
,
6160 get_traceframe_number (), 0, 0, NULL
);
6162 /* Should not happen. If it does, all bets are off. */
6163 if (newnum
!= get_traceframe_number ())
6164 warning (_("could not set remote traceframe"));
6168 remote_fetch_registers (struct target_ops
*ops
,
6169 struct regcache
*regcache
, int regnum
)
6171 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6174 set_remote_traceframe ();
6175 set_general_thread (inferior_ptid
);
6179 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6181 gdb_assert (reg
!= NULL
);
6183 /* If this register might be in the 'g' packet, try that first -
6184 we are likely to read more than one register. If this is the
6185 first 'g' packet, we might be overly optimistic about its
6186 contents, so fall back to 'p'. */
6187 if (reg
->in_g_packet
)
6189 fetch_registers_using_g (regcache
);
6190 if (reg
->in_g_packet
)
6194 if (fetch_register_using_p (regcache
, reg
))
6197 /* This register is not available. */
6198 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6203 fetch_registers_using_g (regcache
);
6205 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6206 if (!rsa
->regs
[i
].in_g_packet
)
6207 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6209 /* This register is not available. */
6210 regcache_raw_supply (regcache
, i
, NULL
);
6214 /* Prepare to store registers. Since we may send them all (using a
6215 'G' request), we have to read out the ones we don't want to change
6219 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6221 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6223 gdb_byte buf
[MAX_REGISTER_SIZE
];
6225 /* Make sure the entire registers array is valid. */
6226 switch (packet_support (PACKET_P
))
6228 case PACKET_DISABLE
:
6229 case PACKET_SUPPORT_UNKNOWN
:
6230 /* Make sure all the necessary registers are cached. */
6231 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6232 if (rsa
->regs
[i
].in_g_packet
)
6233 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6240 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6241 packet was not recognized. */
6244 store_register_using_P (const struct regcache
*regcache
,
6245 struct packet_reg
*reg
)
6247 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6248 struct remote_state
*rs
= get_remote_state ();
6249 /* Try storing a single register. */
6250 char *buf
= rs
->buf
;
6251 gdb_byte regp
[MAX_REGISTER_SIZE
];
6254 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
6257 if (reg
->pnum
== -1)
6260 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6261 p
= buf
+ strlen (buf
);
6262 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6263 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6265 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6267 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6272 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6273 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6274 case PACKET_UNKNOWN
:
6277 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6281 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6282 contents of the register cache buffer. FIXME: ignores errors. */
6285 store_registers_using_G (const struct regcache
*regcache
)
6287 struct remote_state
*rs
= get_remote_state ();
6288 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6292 /* Extract all the registers in the regcache copying them into a
6297 regs
= alloca (rsa
->sizeof_g_packet
);
6298 memset (regs
, 0, rsa
->sizeof_g_packet
);
6299 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6301 struct packet_reg
*r
= &rsa
->regs
[i
];
6304 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6308 /* Command describes registers byte by byte,
6309 each byte encoded as two hex characters. */
6312 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6314 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6316 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6317 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6318 error (_("Could not write registers; remote failure reply '%s'"),
6322 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6323 of the register cache buffer. FIXME: ignores errors. */
6326 remote_store_registers (struct target_ops
*ops
,
6327 struct regcache
*regcache
, int regnum
)
6329 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6332 set_remote_traceframe ();
6333 set_general_thread (inferior_ptid
);
6337 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6339 gdb_assert (reg
!= NULL
);
6341 /* Always prefer to store registers using the 'P' packet if
6342 possible; we often change only a small number of registers.
6343 Sometimes we change a larger number; we'd need help from a
6344 higher layer to know to use 'G'. */
6345 if (store_register_using_P (regcache
, reg
))
6348 /* For now, don't complain if we have no way to write the
6349 register. GDB loses track of unavailable registers too
6350 easily. Some day, this may be an error. We don't have
6351 any way to read the register, either... */
6352 if (!reg
->in_g_packet
)
6355 store_registers_using_G (regcache
);
6359 store_registers_using_G (regcache
);
6361 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6362 if (!rsa
->regs
[i
].in_g_packet
)
6363 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6364 /* See above for why we do not issue an error here. */
6369 /* Return the number of hex digits in num. */
6372 hexnumlen (ULONGEST num
)
6376 for (i
= 0; num
!= 0; i
++)
6382 /* Set BUF to the minimum number of hex digits representing NUM. */
6385 hexnumstr (char *buf
, ULONGEST num
)
6387 int len
= hexnumlen (num
);
6389 return hexnumnstr (buf
, num
, len
);
6393 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6396 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6402 for (i
= width
- 1; i
>= 0; i
--)
6404 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6411 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6414 remote_address_masked (CORE_ADDR addr
)
6416 unsigned int address_size
= remote_address_size
;
6418 /* If "remoteaddresssize" was not set, default to target address size. */
6420 address_size
= gdbarch_addr_bit (target_gdbarch ());
6422 if (address_size
> 0
6423 && address_size
< (sizeof (ULONGEST
) * 8))
6425 /* Only create a mask when that mask can safely be constructed
6426 in a ULONGEST variable. */
6429 mask
= (mask
<< address_size
) - 1;
6435 /* Determine whether the remote target supports binary downloading.
6436 This is accomplished by sending a no-op memory write of zero length
6437 to the target at the specified address. It does not suffice to send
6438 the whole packet, since many stubs strip the eighth bit and
6439 subsequently compute a wrong checksum, which causes real havoc with
6442 NOTE: This can still lose if the serial line is not eight-bit
6443 clean. In cases like this, the user should clear "remote
6447 check_binary_download (CORE_ADDR addr
)
6449 struct remote_state
*rs
= get_remote_state ();
6451 switch (packet_support (PACKET_X
))
6453 case PACKET_DISABLE
:
6457 case PACKET_SUPPORT_UNKNOWN
:
6463 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6465 p
+= hexnumstr (p
, (ULONGEST
) 0);
6469 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6470 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6472 if (rs
->buf
[0] == '\0')
6475 fprintf_unfiltered (gdb_stdlog
,
6476 "binary downloading NOT "
6477 "supported by target\n");
6478 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6483 fprintf_unfiltered (gdb_stdlog
,
6484 "binary downloading supported by target\n");
6485 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6492 /* Write memory data directly to the remote machine.
6493 This does not inform the data cache; the data cache uses this.
6494 HEADER is the starting part of the packet.
6495 MEMADDR is the address in the remote memory space.
6496 MYADDR is the address of the buffer in our space.
6497 LEN is the number of bytes.
6498 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6499 should send data as binary ('X'), or hex-encoded ('M').
6501 The function creates packet of the form
6502 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6504 where encoding of <DATA> is termined by PACKET_FORMAT.
6506 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6509 Return the transferred status, error or OK (an
6510 'enum target_xfer_status' value). Save the number of bytes
6511 transferred in *XFERED_LEN. Only transfer a single packet. */
6513 static enum target_xfer_status
6514 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6515 const gdb_byte
*myaddr
, ULONGEST len
,
6516 ULONGEST
*xfered_len
, char packet_format
,
6519 struct remote_state
*rs
= get_remote_state ();
6529 if (packet_format
!= 'X' && packet_format
!= 'M')
6530 internal_error (__FILE__
, __LINE__
,
6531 _("remote_write_bytes_aux: bad packet format"));
6534 return TARGET_XFER_EOF
;
6536 payload_size
= get_memory_write_packet_size ();
6538 /* The packet buffer will be large enough for the payload;
6539 get_memory_packet_size ensures this. */
6542 /* Compute the size of the actual payload by subtracting out the
6543 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6545 payload_size
-= strlen ("$,:#NN");
6547 /* The comma won't be used. */
6549 header_length
= strlen (header
);
6550 payload_size
-= header_length
;
6551 payload_size
-= hexnumlen (memaddr
);
6553 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6555 strcat (rs
->buf
, header
);
6556 p
= rs
->buf
+ strlen (header
);
6558 /* Compute a best guess of the number of bytes actually transfered. */
6559 if (packet_format
== 'X')
6561 /* Best guess at number of bytes that will fit. */
6562 todo
= min (len
, payload_size
);
6564 payload_size
-= hexnumlen (todo
);
6565 todo
= min (todo
, payload_size
);
6569 /* Num bytes that will fit. */
6570 todo
= min (len
, payload_size
/ 2);
6572 payload_size
-= hexnumlen (todo
);
6573 todo
= min (todo
, payload_size
/ 2);
6577 internal_error (__FILE__
, __LINE__
,
6578 _("minimum packet size too small to write data"));
6580 /* If we already need another packet, then try to align the end
6581 of this packet to a useful boundary. */
6582 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6583 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6585 /* Append "<memaddr>". */
6586 memaddr
= remote_address_masked (memaddr
);
6587 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6594 /* Append <len>. Retain the location/size of <len>. It may need to
6595 be adjusted once the packet body has been created. */
6597 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6605 /* Append the packet body. */
6606 if (packet_format
== 'X')
6608 /* Binary mode. Send target system values byte by byte, in
6609 increasing byte addresses. Only escape certain critical
6611 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6612 &nr_bytes
, payload_size
);
6614 /* If not all TODO bytes fit, then we'll need another packet. Make
6615 a second try to keep the end of the packet aligned. Don't do
6616 this if the packet is tiny. */
6617 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6621 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6623 if (new_nr_bytes
!= nr_bytes
)
6624 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6625 (gdb_byte
*) p
, &nr_bytes
,
6629 p
+= payload_length
;
6630 if (use_length
&& nr_bytes
< todo
)
6632 /* Escape chars have filled up the buffer prematurely,
6633 and we have actually sent fewer bytes than planned.
6634 Fix-up the length field of the packet. Use the same
6635 number of characters as before. */
6636 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6637 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6642 /* Normal mode: Send target system values byte by byte, in
6643 increasing byte addresses. Each byte is encoded as a two hex
6645 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6649 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6650 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6652 if (rs
->buf
[0] == 'E')
6653 return TARGET_XFER_E_IO
;
6655 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6656 fewer bytes than we'd planned. */
6657 *xfered_len
= (ULONGEST
) nr_bytes
;
6658 return TARGET_XFER_OK
;
6661 /* Write memory data directly to the remote machine.
6662 This does not inform the data cache; the data cache uses this.
6663 MEMADDR is the address in the remote memory space.
6664 MYADDR is the address of the buffer in our space.
6665 LEN is the number of bytes.
6667 Return the transferred status, error or OK (an
6668 'enum target_xfer_status' value). Save the number of bytes
6669 transferred in *XFERED_LEN. Only transfer a single packet. */
6671 static enum target_xfer_status
6672 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6673 ULONGEST
*xfered_len
)
6675 char *packet_format
= 0;
6677 /* Check whether the target supports binary download. */
6678 check_binary_download (memaddr
);
6680 switch (packet_support (PACKET_X
))
6683 packet_format
= "X";
6685 case PACKET_DISABLE
:
6686 packet_format
= "M";
6688 case PACKET_SUPPORT_UNKNOWN
:
6689 internal_error (__FILE__
, __LINE__
,
6690 _("remote_write_bytes: bad internal state"));
6692 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6695 return remote_write_bytes_aux (packet_format
,
6696 memaddr
, myaddr
, len
, xfered_len
,
6697 packet_format
[0], 1);
6700 /* Read memory data directly from the remote machine.
6701 This does not use the data cache; the data cache uses this.
6702 MEMADDR is the address in the remote memory space.
6703 MYADDR is the address of the buffer in our space.
6704 LEN is the number of bytes.
6706 Return the transferred status, error or OK (an
6707 'enum target_xfer_status' value). Save the number of bytes
6708 transferred in *XFERED_LEN. */
6710 static enum target_xfer_status
6711 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6712 ULONGEST
*xfered_len
)
6714 struct remote_state
*rs
= get_remote_state ();
6715 int max_buf_size
; /* Max size of packet output buffer. */
6720 max_buf_size
= get_memory_read_packet_size ();
6721 /* The packet buffer will be large enough for the payload;
6722 get_memory_packet_size ensures this. */
6724 /* Number if bytes that will fit. */
6725 todo
= min (len
, max_buf_size
/ 2);
6727 /* Construct "m"<memaddr>","<len>". */
6728 memaddr
= remote_address_masked (memaddr
);
6731 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6733 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6736 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6737 if (rs
->buf
[0] == 'E'
6738 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6739 && rs
->buf
[3] == '\0')
6740 return TARGET_XFER_E_IO
;
6741 /* Reply describes memory byte by byte, each byte encoded as two hex
6744 i
= hex2bin (p
, myaddr
, todo
);
6745 /* Return what we have. Let higher layers handle partial reads. */
6746 *xfered_len
= (ULONGEST
) i
;
6747 return TARGET_XFER_OK
;
6750 /* Using the set of read-only target sections of remote, read live
6753 For interface/parameters/return description see target.h,
6756 static enum target_xfer_status
6757 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
6758 ULONGEST memaddr
, ULONGEST len
,
6759 ULONGEST
*xfered_len
)
6761 struct target_section
*secp
;
6762 struct target_section_table
*table
;
6764 secp
= target_section_by_addr (ops
, memaddr
);
6766 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
6767 secp
->the_bfd_section
)
6770 struct target_section
*p
;
6771 ULONGEST memend
= memaddr
+ len
;
6773 table
= target_get_section_table (ops
);
6775 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
6777 if (memaddr
>= p
->addr
)
6779 if (memend
<= p
->endaddr
)
6781 /* Entire transfer is within this section. */
6782 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6785 else if (memaddr
>= p
->endaddr
)
6787 /* This section ends before the transfer starts. */
6792 /* This section overlaps the transfer. Just do half. */
6793 len
= p
->endaddr
- memaddr
;
6794 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6801 return TARGET_XFER_EOF
;
6804 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6805 first if the requested memory is unavailable in traceframe.
6806 Otherwise, fall back to remote_read_bytes_1. */
6808 static enum target_xfer_status
6809 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
6810 gdb_byte
*myaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
6815 if (get_traceframe_number () != -1)
6817 VEC(mem_range_s
) *available
;
6819 /* If we fail to get the set of available memory, then the
6820 target does not support querying traceframe info, and so we
6821 attempt reading from the traceframe anyway (assuming the
6822 target implements the old QTro packet then). */
6823 if (traceframe_available_memory (&available
, memaddr
, len
))
6825 struct cleanup
*old_chain
;
6827 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
6829 if (VEC_empty (mem_range_s
, available
)
6830 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
6832 enum target_xfer_status res
;
6834 /* Don't read into the traceframe's available
6836 if (!VEC_empty (mem_range_s
, available
))
6838 LONGEST oldlen
= len
;
6840 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
6841 gdb_assert (len
<= oldlen
);
6844 do_cleanups (old_chain
);
6846 /* This goes through the topmost target again. */
6847 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
6849 if (res
== TARGET_XFER_OK
)
6850 return TARGET_XFER_OK
;
6853 /* No use trying further, we know some memory starting
6854 at MEMADDR isn't available. */
6856 return TARGET_XFER_UNAVAILABLE
;
6860 /* Don't try to read more than how much is available, in
6861 case the target implements the deprecated QTro packet to
6862 cater for older GDBs (the target's knowledge of read-only
6863 sections may be outdated by now). */
6864 len
= VEC_index (mem_range_s
, available
, 0)->length
;
6866 do_cleanups (old_chain
);
6870 return remote_read_bytes_1 (memaddr
, myaddr
, len
, xfered_len
);
6875 /* Sends a packet with content determined by the printf format string
6876 FORMAT and the remaining arguments, then gets the reply. Returns
6877 whether the packet was a success, a failure, or unknown. */
6879 static enum packet_result
6880 remote_send_printf (const char *format
, ...)
6882 struct remote_state
*rs
= get_remote_state ();
6883 int max_size
= get_remote_packet_size ();
6886 va_start (ap
, format
);
6889 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6890 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6892 if (putpkt (rs
->buf
) < 0)
6893 error (_("Communication problem with target."));
6896 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6898 return packet_check_result (rs
->buf
);
6902 restore_remote_timeout (void *p
)
6904 int value
= *(int *)p
;
6906 remote_timeout
= value
;
6909 /* Flash writing can take quite some time. We'll set
6910 effectively infinite timeout for flash operations.
6911 In future, we'll need to decide on a better approach. */
6912 static const int remote_flash_timeout
= 1000;
6915 remote_flash_erase (struct target_ops
*ops
,
6916 ULONGEST address
, LONGEST length
)
6918 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6919 int saved_remote_timeout
= remote_timeout
;
6920 enum packet_result ret
;
6921 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6922 &saved_remote_timeout
);
6924 remote_timeout
= remote_flash_timeout
;
6926 ret
= remote_send_printf ("vFlashErase:%s,%s",
6927 phex (address
, addr_size
),
6931 case PACKET_UNKNOWN
:
6932 error (_("Remote target does not support flash erase"));
6934 error (_("Error erasing flash with vFlashErase packet"));
6939 do_cleanups (back_to
);
6942 static enum target_xfer_status
6943 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
6944 ULONGEST length
, ULONGEST
*xfered_len
,
6945 const gdb_byte
*data
)
6947 int saved_remote_timeout
= remote_timeout
;
6948 enum target_xfer_status ret
;
6949 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6950 &saved_remote_timeout
);
6952 remote_timeout
= remote_flash_timeout
;
6953 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
6955 do_cleanups (back_to
);
6961 remote_flash_done (struct target_ops
*ops
)
6963 int saved_remote_timeout
= remote_timeout
;
6965 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6966 &saved_remote_timeout
);
6968 remote_timeout
= remote_flash_timeout
;
6969 ret
= remote_send_printf ("vFlashDone");
6970 do_cleanups (back_to
);
6974 case PACKET_UNKNOWN
:
6975 error (_("Remote target does not support vFlashDone"));
6977 error (_("Error finishing flash operation"));
6984 remote_files_info (struct target_ops
*ignore
)
6986 puts_filtered ("Debugging a target over a serial line.\n");
6989 /* Stuff for dealing with the packets which are part of this protocol.
6990 See comment at top of file for details. */
6992 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
6993 error to higher layers. Called when a serial error is detected.
6994 The exception message is STRING, followed by a colon and a blank,
6995 the system error message for errno at function entry and final dot
6996 for output compatibility with throw_perror_with_name. */
6999 unpush_and_perror (const char *string
)
7001 int saved_errno
= errno
;
7003 remote_unpush_target ();
7004 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7005 safe_strerror (saved_errno
));
7008 /* Read a single character from the remote end. */
7011 readchar (int timeout
)
7014 struct remote_state
*rs
= get_remote_state ();
7016 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7021 switch ((enum serial_rc
) ch
)
7024 remote_unpush_target ();
7025 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7028 unpush_and_perror (_("Remote communication error. "
7029 "Target disconnected."));
7031 case SERIAL_TIMEOUT
:
7037 /* Wrapper for serial_write that closes the target and throws if
7041 remote_serial_write (const char *str
, int len
)
7043 struct remote_state
*rs
= get_remote_state ();
7045 if (serial_write (rs
->remote_desc
, str
, len
))
7047 unpush_and_perror (_("Remote communication error. "
7048 "Target disconnected."));
7052 /* Send the command in *BUF to the remote machine, and read the reply
7053 into *BUF. Report an error if we get an error reply. Resize
7054 *BUF using xrealloc if necessary to hold the result, and update
7058 remote_send (char **buf
,
7062 getpkt (buf
, sizeof_buf
, 0);
7064 if ((*buf
)[0] == 'E')
7065 error (_("Remote failure reply: %s"), *buf
);
7068 /* Return a pointer to an xmalloc'ed string representing an escaped
7069 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7070 etc. The caller is responsible for releasing the returned
7074 escape_buffer (const char *buf
, int n
)
7076 struct cleanup
*old_chain
;
7077 struct ui_file
*stb
;
7080 stb
= mem_fileopen ();
7081 old_chain
= make_cleanup_ui_file_delete (stb
);
7083 fputstrn_unfiltered (buf
, n
, 0, stb
);
7084 str
= ui_file_xstrdup (stb
, NULL
);
7085 do_cleanups (old_chain
);
7089 /* Display a null-terminated packet on stdout, for debugging, using C
7093 print_packet (char *buf
)
7095 puts_filtered ("\"");
7096 fputstr_filtered (buf
, '"', gdb_stdout
);
7097 puts_filtered ("\"");
7103 return putpkt_binary (buf
, strlen (buf
));
7106 /* Send a packet to the remote machine, with error checking. The data
7107 of the packet is in BUF. The string in BUF can be at most
7108 get_remote_packet_size () - 5 to account for the $, # and checksum,
7109 and for a possible /0 if we are debugging (remote_debug) and want
7110 to print the sent packet as a string. */
7113 putpkt_binary (char *buf
, int cnt
)
7115 struct remote_state
*rs
= get_remote_state ();
7117 unsigned char csum
= 0;
7118 char *buf2
= alloca (cnt
+ 6);
7125 /* Catch cases like trying to read memory or listing threads while
7126 we're waiting for a stop reply. The remote server wouldn't be
7127 ready to handle this request, so we'd hang and timeout. We don't
7128 have to worry about this in synchronous mode, because in that
7129 case it's not possible to issue a command while the target is
7130 running. This is not a problem in non-stop mode, because in that
7131 case, the stub is always ready to process serial input. */
7132 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7133 error (_("Cannot execute this command while the target is running."));
7135 /* We're sending out a new packet. Make sure we don't look at a
7136 stale cached response. */
7137 rs
->cached_wait_status
= 0;
7139 /* Copy the packet into buffer BUF2, encapsulating it
7140 and giving it a checksum. */
7145 for (i
= 0; i
< cnt
; i
++)
7151 *p
++ = tohex ((csum
>> 4) & 0xf);
7152 *p
++ = tohex (csum
& 0xf);
7154 /* Send it over and over until we get a positive ack. */
7158 int started_error_output
= 0;
7162 struct cleanup
*old_chain
;
7166 str
= escape_buffer (buf2
, p
- buf2
);
7167 old_chain
= make_cleanup (xfree
, str
);
7168 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7169 gdb_flush (gdb_stdlog
);
7170 do_cleanups (old_chain
);
7172 remote_serial_write (buf2
, p
- buf2
);
7174 /* If this is a no acks version of the remote protocol, send the
7175 packet and move on. */
7179 /* Read until either a timeout occurs (-2) or '+' is read.
7180 Handle any notification that arrives in the mean time. */
7183 ch
= readchar (remote_timeout
);
7191 case SERIAL_TIMEOUT
:
7194 if (started_error_output
)
7196 putchar_unfiltered ('\n');
7197 started_error_output
= 0;
7206 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7210 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7212 case SERIAL_TIMEOUT
:
7216 break; /* Retransmit buffer. */
7220 fprintf_unfiltered (gdb_stdlog
,
7221 "Packet instead of Ack, ignoring it\n");
7222 /* It's probably an old response sent because an ACK
7223 was lost. Gobble up the packet and ack it so it
7224 doesn't get retransmitted when we resend this
7227 remote_serial_write ("+", 1);
7228 continue; /* Now, go look for +. */
7235 /* If we got a notification, handle it, and go back to looking
7237 /* We've found the start of a notification. Now
7238 collect the data. */
7239 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7244 struct cleanup
*old_chain
;
7247 str
= escape_buffer (rs
->buf
, val
);
7248 old_chain
= make_cleanup (xfree
, str
);
7249 fprintf_unfiltered (gdb_stdlog
,
7250 " Notification received: %s\n",
7252 do_cleanups (old_chain
);
7254 handle_notification (rs
->notif_state
, rs
->buf
);
7255 /* We're in sync now, rewait for the ack. */
7262 if (!started_error_output
)
7264 started_error_output
= 1;
7265 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7267 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7268 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7277 if (!started_error_output
)
7279 started_error_output
= 1;
7280 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7282 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7286 break; /* Here to retransmit. */
7290 /* This is wrong. If doing a long backtrace, the user should be
7291 able to get out next time we call QUIT, without anything as
7292 violent as interrupt_query. If we want to provide a way out of
7293 here without getting to the next QUIT, it should be based on
7294 hitting ^C twice as in remote_wait. */
7305 /* Come here after finding the start of a frame when we expected an
7306 ack. Do our best to discard the rest of this packet. */
7315 c
= readchar (remote_timeout
);
7318 case SERIAL_TIMEOUT
:
7319 /* Nothing we can do. */
7322 /* Discard the two bytes of checksum and stop. */
7323 c
= readchar (remote_timeout
);
7325 c
= readchar (remote_timeout
);
7328 case '*': /* Run length encoding. */
7329 /* Discard the repeat count. */
7330 c
= readchar (remote_timeout
);
7335 /* A regular character. */
7341 /* Come here after finding the start of the frame. Collect the rest
7342 into *BUF, verifying the checksum, length, and handling run-length
7343 compression. NUL terminate the buffer. If there is not enough room,
7344 expand *BUF using xrealloc.
7346 Returns -1 on error, number of characters in buffer (ignoring the
7347 trailing NULL) on success. (could be extended to return one of the
7348 SERIAL status indications). */
7351 read_frame (char **buf_p
,
7358 struct remote_state
*rs
= get_remote_state ();
7365 c
= readchar (remote_timeout
);
7368 case SERIAL_TIMEOUT
:
7370 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7374 fputs_filtered ("Saw new packet start in middle of old one\n",
7376 return -1; /* Start a new packet, count retries. */
7379 unsigned char pktcsum
;
7385 check_0
= readchar (remote_timeout
);
7387 check_1
= readchar (remote_timeout
);
7389 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7392 fputs_filtered ("Timeout in checksum, retrying\n",
7396 else if (check_0
< 0 || check_1
< 0)
7399 fputs_filtered ("Communication error in checksum\n",
7404 /* Don't recompute the checksum; with no ack packets we
7405 don't have any way to indicate a packet retransmission
7410 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7411 if (csum
== pktcsum
)
7416 struct cleanup
*old_chain
;
7419 str
= escape_buffer (buf
, bc
);
7420 old_chain
= make_cleanup (xfree
, str
);
7421 fprintf_unfiltered (gdb_stdlog
,
7422 "Bad checksum, sentsum=0x%x, "
7423 "csum=0x%x, buf=%s\n",
7424 pktcsum
, csum
, str
);
7425 do_cleanups (old_chain
);
7427 /* Number of characters in buffer ignoring trailing
7431 case '*': /* Run length encoding. */
7436 c
= readchar (remote_timeout
);
7438 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7440 /* The character before ``*'' is repeated. */
7442 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7444 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7446 /* Make some more room in the buffer. */
7447 *sizeof_buf
+= repeat
;
7448 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7452 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7458 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7462 if (bc
>= *sizeof_buf
- 1)
7464 /* Make some more room in the buffer. */
7466 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7477 /* Read a packet from the remote machine, with error checking, and
7478 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7479 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7480 rather than timing out; this is used (in synchronous mode) to wait
7481 for a target that is is executing user code to stop. */
7482 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7483 don't have to change all the calls to getpkt to deal with the
7484 return value, because at the moment I don't know what the right
7485 thing to do it for those. */
7493 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7497 /* Read a packet from the remote machine, with error checking, and
7498 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7499 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7500 rather than timing out; this is used (in synchronous mode) to wait
7501 for a target that is is executing user code to stop. If FOREVER ==
7502 0, this function is allowed to time out gracefully and return an
7503 indication of this to the caller. Otherwise return the number of
7504 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7505 enough reason to return to the caller. *IS_NOTIF is an output
7506 boolean that indicates whether *BUF holds a notification or not
7507 (a regular packet). */
7510 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7511 int expecting_notif
, int *is_notif
)
7513 struct remote_state
*rs
= get_remote_state ();
7519 /* We're reading a new response. Make sure we don't look at a
7520 previously cached response. */
7521 rs
->cached_wait_status
= 0;
7523 strcpy (*buf
, "timeout");
7526 timeout
= watchdog
> 0 ? watchdog
: -1;
7527 else if (expecting_notif
)
7528 timeout
= 0; /* There should already be a char in the buffer. If
7531 timeout
= remote_timeout
;
7535 /* Process any number of notifications, and then return when
7539 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7541 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7543 /* This can loop forever if the remote side sends us
7544 characters continuously, but if it pauses, we'll get
7545 SERIAL_TIMEOUT from readchar because of timeout. Then
7546 we'll count that as a retry.
7548 Note that even when forever is set, we will only wait
7549 forever prior to the start of a packet. After that, we
7550 expect characters to arrive at a brisk pace. They should
7551 show up within remote_timeout intervals. */
7553 c
= readchar (timeout
);
7554 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7556 if (c
== SERIAL_TIMEOUT
)
7558 if (expecting_notif
)
7559 return -1; /* Don't complain, it's normal to not get
7560 anything in this case. */
7562 if (forever
) /* Watchdog went off? Kill the target. */
7565 remote_unpush_target ();
7566 throw_error (TARGET_CLOSE_ERROR
,
7567 _("Watchdog timeout has expired. "
7568 "Target detached."));
7571 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7575 /* We've found the start of a packet or notification.
7576 Now collect the data. */
7577 val
= read_frame (buf
, sizeof_buf
);
7582 remote_serial_write ("-", 1);
7585 if (tries
> MAX_TRIES
)
7587 /* We have tried hard enough, and just can't receive the
7588 packet/notification. Give up. */
7589 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7591 /* Skip the ack char if we're in no-ack mode. */
7592 if (!rs
->noack_mode
)
7593 remote_serial_write ("+", 1);
7597 /* If we got an ordinary packet, return that to our caller. */
7602 struct cleanup
*old_chain
;
7605 str
= escape_buffer (*buf
, val
);
7606 old_chain
= make_cleanup (xfree
, str
);
7607 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7608 do_cleanups (old_chain
);
7611 /* Skip the ack char if we're in no-ack mode. */
7612 if (!rs
->noack_mode
)
7613 remote_serial_write ("+", 1);
7614 if (is_notif
!= NULL
)
7619 /* If we got a notification, handle it, and go back to looking
7623 gdb_assert (c
== '%');
7627 struct cleanup
*old_chain
;
7630 str
= escape_buffer (*buf
, val
);
7631 old_chain
= make_cleanup (xfree
, str
);
7632 fprintf_unfiltered (gdb_stdlog
,
7633 " Notification received: %s\n",
7635 do_cleanups (old_chain
);
7637 if (is_notif
!= NULL
)
7640 handle_notification (rs
->notif_state
, *buf
);
7642 /* Notifications require no acknowledgement. */
7644 if (expecting_notif
)
7651 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7653 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7657 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7660 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7666 remote_kill (struct target_ops
*ops
)
7668 volatile struct gdb_exception ex
;
7670 /* Catch errors so the user can quit from gdb even when we
7671 aren't on speaking terms with the remote system. */
7672 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7678 if (ex
.error
== TARGET_CLOSE_ERROR
)
7680 /* If we got an (EOF) error that caused the target
7681 to go away, then we're done, that's what we wanted.
7682 "k" is susceptible to cause a premature EOF, given
7683 that the remote server isn't actually required to
7684 reply to "k", and it can happen that it doesn't
7685 even get to reply ACK to the "k". */
7689 /* Otherwise, something went wrong. We didn't actually kill
7690 the target. Just propagate the exception, and let the
7691 user or higher layers decide what to do. */
7692 throw_exception (ex
);
7695 /* We've killed the remote end, we get to mourn it. Since this is
7696 target remote, single-process, mourning the inferior also
7697 unpushes remote_ops. */
7698 target_mourn_inferior ();
7702 remote_vkill (int pid
, struct remote_state
*rs
)
7704 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
7707 /* Tell the remote target to detach. */
7708 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7710 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7712 switch (packet_ok (rs
->buf
,
7713 &remote_protocol_packets
[PACKET_vKill
]))
7719 case PACKET_UNKNOWN
:
7722 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7727 extended_remote_kill (struct target_ops
*ops
)
7730 int pid
= ptid_get_pid (inferior_ptid
);
7731 struct remote_state
*rs
= get_remote_state ();
7733 res
= remote_vkill (pid
, rs
);
7734 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7736 /* Don't try 'k' on a multi-process aware stub -- it has no way
7737 to specify the pid. */
7741 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7742 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7745 /* Don't wait for it to die. I'm not really sure it matters whether
7746 we do or not. For the existing stubs, kill is a noop. */
7752 error (_("Can't kill process"));
7754 target_mourn_inferior ();
7758 remote_mourn (struct target_ops
*ops
)
7760 remote_mourn_1 (ops
);
7763 /* Worker function for remote_mourn. */
7765 remote_mourn_1 (struct target_ops
*target
)
7767 unpush_target (target
);
7769 /* remote_close takes care of doing most of the clean up. */
7770 generic_mourn_inferior ();
7774 extended_remote_mourn_1 (struct target_ops
*target
)
7776 struct remote_state
*rs
= get_remote_state ();
7778 /* In case we got here due to an error, but we're going to stay
7780 rs
->waiting_for_stop_reply
= 0;
7782 /* If the current general thread belonged to the process we just
7783 detached from or has exited, the remote side current general
7784 thread becomes undefined. Considering a case like this:
7786 - We just got here due to a detach.
7787 - The process that we're detaching from happens to immediately
7788 report a global breakpoint being hit in non-stop mode, in the
7789 same thread we had selected before.
7790 - GDB attaches to this process again.
7791 - This event happens to be the next event we handle.
7793 GDB would consider that the current general thread didn't need to
7794 be set on the stub side (with Hg), since for all it knew,
7795 GENERAL_THREAD hadn't changed.
7797 Notice that although in all-stop mode, the remote server always
7798 sets the current thread to the thread reporting the stop event,
7799 that doesn't happen in non-stop mode; in non-stop, the stub *must
7800 not* change the current thread when reporting a breakpoint hit,
7801 due to the decoupling of event reporting and event handling.
7803 To keep things simple, we always invalidate our notion of the
7805 record_currthread (rs
, minus_one_ptid
);
7807 /* Unlike "target remote", we do not want to unpush the target; then
7808 the next time the user says "run", we won't be connected. */
7810 /* Call common code to mark the inferior as not running. */
7811 generic_mourn_inferior ();
7813 if (!have_inferiors ())
7815 if (!remote_multi_process_p (rs
))
7817 /* Check whether the target is running now - some remote stubs
7818 automatically restart after kill. */
7820 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7822 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7824 /* Assume that the target has been restarted. Set
7825 inferior_ptid so that bits of core GDB realizes
7826 there's something here, e.g., so that the user can
7827 say "kill" again. */
7828 inferior_ptid
= magic_null_ptid
;
7835 extended_remote_mourn (struct target_ops
*ops
)
7837 extended_remote_mourn_1 (ops
);
7841 extended_remote_supports_disable_randomization (struct target_ops
*self
)
7843 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
7847 extended_remote_disable_randomization (int val
)
7849 struct remote_state
*rs
= get_remote_state ();
7852 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7855 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7857 error (_("Target does not support QDisableRandomization."));
7858 if (strcmp (reply
, "OK") != 0)
7859 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7863 extended_remote_run (char *args
)
7865 struct remote_state
*rs
= get_remote_state ();
7868 /* If the user has disabled vRun support, or we have detected that
7869 support is not available, do not try it. */
7870 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
7873 strcpy (rs
->buf
, "vRun;");
7874 len
= strlen (rs
->buf
);
7876 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7877 error (_("Remote file name too long for run packet"));
7878 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
7879 strlen (remote_exec_file
));
7881 gdb_assert (args
!= NULL
);
7884 struct cleanup
*back_to
;
7888 argv
= gdb_buildargv (args
);
7889 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7890 for (i
= 0; argv
[i
] != NULL
; i
++)
7892 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7893 error (_("Argument list too long for run packet"));
7894 rs
->buf
[len
++] = ';';
7895 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
7898 do_cleanups (back_to
);
7901 rs
->buf
[len
++] = '\0';
7904 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7906 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
7909 /* We have a wait response. All is well. */
7911 case PACKET_UNKNOWN
:
7914 if (remote_exec_file
[0] == '\0')
7915 error (_("Running the default executable on the remote target failed; "
7916 "try \"set remote exec-file\"?"));
7918 error (_("Running \"%s\" on the remote target failed"),
7921 gdb_assert_not_reached (_("bad switch"));
7925 /* In the extended protocol we want to be able to do things like
7926 "run" and have them basically work as expected. So we need
7927 a special create_inferior function. We support changing the
7928 executable file and the command line arguments, but not the
7932 extended_remote_create_inferior (struct target_ops
*ops
,
7933 char *exec_file
, char *args
,
7934 char **env
, int from_tty
)
7938 struct remote_state
*rs
= get_remote_state ();
7940 /* If running asynchronously, register the target file descriptor
7941 with the event loop. */
7942 if (target_can_async_p ())
7943 target_async (inferior_event_handler
, 0);
7945 /* Disable address space randomization if requested (and supported). */
7946 if (extended_remote_supports_disable_randomization (ops
))
7947 extended_remote_disable_randomization (disable_randomization
);
7949 /* Now restart the remote server. */
7950 run_worked
= extended_remote_run (args
) != -1;
7953 /* vRun was not supported. Fail if we need it to do what the
7955 if (remote_exec_file
[0])
7956 error (_("Remote target does not support \"set remote exec-file\""));
7958 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7960 /* Fall back to "R". */
7961 extended_remote_restart ();
7964 if (!have_inferiors ())
7966 /* Clean up from the last time we ran, before we mark the target
7967 running again. This will mark breakpoints uninserted, and
7968 get_offsets may insert breakpoints. */
7969 init_thread_list ();
7970 init_wait_for_inferior ();
7973 /* vRun's success return is a stop reply. */
7974 stop_reply
= run_worked
? rs
->buf
: NULL
;
7975 add_current_inferior_and_thread (stop_reply
);
7977 /* Get updated offsets, if the stub uses qOffsets. */
7982 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7983 the list of conditions (in agent expression bytecode format), if any, the
7984 target needs to evaluate. The output is placed into the packet buffer
7985 started from BUF and ended at BUF_END. */
7988 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7989 struct bp_target_info
*bp_tgt
, char *buf
,
7992 struct agent_expr
*aexpr
= NULL
;
7995 char *buf_start
= buf
;
7997 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8000 buf
+= strlen (buf
);
8001 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8004 /* Send conditions to the target and free the vector. */
8006 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8009 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8010 buf
+= strlen (buf
);
8011 for (i
= 0; i
< aexpr
->len
; ++i
)
8012 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8019 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8020 struct bp_target_info
*bp_tgt
, char *buf
)
8022 struct agent_expr
*aexpr
= NULL
;
8025 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8028 buf
+= strlen (buf
);
8030 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8031 buf
+= strlen (buf
);
8033 /* Concatenate all the agent expressions that are commands into the
8036 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8039 sprintf (buf
, "X%x,", aexpr
->len
);
8040 buf
+= strlen (buf
);
8041 for (i
= 0; i
< aexpr
->len
; ++i
)
8042 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8047 /* Insert a breakpoint. On targets that have software breakpoint
8048 support, we ask the remote target to do the work; on targets
8049 which don't, we insert a traditional memory breakpoint. */
8052 remote_insert_breakpoint (struct target_ops
*ops
,
8053 struct gdbarch
*gdbarch
,
8054 struct bp_target_info
*bp_tgt
)
8056 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8057 If it succeeds, then set the support to PACKET_ENABLE. If it
8058 fails, and the user has explicitly requested the Z support then
8059 report an error, otherwise, mark it disabled and go on. */
8061 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8063 CORE_ADDR addr
= bp_tgt
->placed_address
;
8064 struct remote_state
*rs
;
8067 struct condition_list
*cond
= NULL
;
8069 /* Make sure the remote is pointing at the right process, if
8071 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8072 set_general_process ();
8074 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8076 rs
= get_remote_state ();
8078 endbuf
= rs
->buf
+ get_remote_packet_size ();
8083 addr
= (ULONGEST
) remote_address_masked (addr
);
8084 p
+= hexnumstr (p
, addr
);
8085 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8087 if (remote_supports_cond_breakpoints (ops
))
8088 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8090 if (remote_can_run_breakpoint_commands (ops
))
8091 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8094 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8096 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8101 bp_tgt
->placed_address
= addr
;
8102 bp_tgt
->placed_size
= bpsize
;
8104 case PACKET_UNKNOWN
:
8109 /* If this breakpoint has target-side commands but this stub doesn't
8110 support Z0 packets, throw error. */
8111 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8112 throw_error (NOT_SUPPORTED_ERROR
, _("\
8113 Target doesn't support breakpoints that have target side commands."));
8115 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8119 remote_remove_breakpoint (struct target_ops
*ops
,
8120 struct gdbarch
*gdbarch
,
8121 struct bp_target_info
*bp_tgt
)
8123 CORE_ADDR addr
= bp_tgt
->placed_address
;
8124 struct remote_state
*rs
= get_remote_state ();
8126 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
8129 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8131 /* Make sure the remote is pointing at the right process, if
8133 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8134 set_general_process ();
8140 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8141 p
+= hexnumstr (p
, addr
);
8142 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8145 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8147 return (rs
->buf
[0] == 'E');
8150 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8154 watchpoint_to_Z_packet (int type
)
8159 return Z_PACKET_WRITE_WP
;
8162 return Z_PACKET_READ_WP
;
8165 return Z_PACKET_ACCESS_WP
;
8168 internal_error (__FILE__
, __LINE__
,
8169 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8174 remote_insert_watchpoint (struct target_ops
*self
,
8175 CORE_ADDR addr
, int len
, int type
,
8176 struct expression
*cond
)
8178 struct remote_state
*rs
= get_remote_state ();
8179 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8181 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8183 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8186 /* Make sure the remote is pointing at the right process, if
8188 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8189 set_general_process ();
8191 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8192 p
= strchr (rs
->buf
, '\0');
8193 addr
= remote_address_masked (addr
);
8194 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8195 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8198 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8200 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8204 case PACKET_UNKNOWN
:
8209 internal_error (__FILE__
, __LINE__
,
8210 _("remote_insert_watchpoint: reached end of function"));
8214 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8215 CORE_ADDR start
, int length
)
8217 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8219 return diff
< length
;
8224 remote_remove_watchpoint (struct target_ops
*self
,
8225 CORE_ADDR addr
, int len
, int type
,
8226 struct expression
*cond
)
8228 struct remote_state
*rs
= get_remote_state ();
8229 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8231 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8233 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
8236 /* Make sure the remote is pointing at the right process, if
8238 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8239 set_general_process ();
8241 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8242 p
= strchr (rs
->buf
, '\0');
8243 addr
= remote_address_masked (addr
);
8244 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8245 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8247 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8249 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8252 case PACKET_UNKNOWN
:
8257 internal_error (__FILE__
, __LINE__
,
8258 _("remote_remove_watchpoint: reached end of function"));
8262 int remote_hw_watchpoint_limit
= -1;
8263 int remote_hw_watchpoint_length_limit
= -1;
8264 int remote_hw_breakpoint_limit
= -1;
8267 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8268 CORE_ADDR addr
, int len
)
8270 if (remote_hw_watchpoint_length_limit
== 0)
8272 else if (remote_hw_watchpoint_length_limit
< 0)
8274 else if (len
<= remote_hw_watchpoint_length_limit
)
8281 remote_check_watch_resources (struct target_ops
*self
,
8282 int type
, int cnt
, int ot
)
8284 if (type
== bp_hardware_breakpoint
)
8286 if (remote_hw_breakpoint_limit
== 0)
8288 else if (remote_hw_breakpoint_limit
< 0)
8290 else if (cnt
<= remote_hw_breakpoint_limit
)
8295 if (remote_hw_watchpoint_limit
== 0)
8297 else if (remote_hw_watchpoint_limit
< 0)
8301 else if (cnt
<= remote_hw_watchpoint_limit
)
8308 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8310 struct remote_state
*rs
= get_remote_state ();
8312 return rs
->remote_stopped_by_watchpoint_p
;
8316 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8318 struct remote_state
*rs
= get_remote_state ();
8321 if (remote_stopped_by_watchpoint (target
))
8323 *addr_p
= rs
->remote_watch_data_address
;
8332 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8333 struct bp_target_info
*bp_tgt
)
8336 struct remote_state
*rs
;
8340 /* The length field should be set to the size of a breakpoint
8341 instruction, even though we aren't inserting one ourselves. */
8343 gdbarch_remote_breakpoint_from_pc
8344 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8346 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
8349 /* Make sure the remote is pointing at the right process, if
8351 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8352 set_general_process ();
8354 rs
= get_remote_state ();
8356 endbuf
= rs
->buf
+ get_remote_packet_size ();
8362 addr
= remote_address_masked (bp_tgt
->placed_address
);
8363 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8364 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8366 if (remote_supports_cond_breakpoints (self
))
8367 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8369 if (remote_can_run_breakpoint_commands (self
))
8370 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8373 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8375 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8378 if (rs
->buf
[1] == '.')
8380 message
= strchr (rs
->buf
+ 2, '.');
8382 error (_("Remote failure reply: %s"), message
+ 1);
8385 case PACKET_UNKNOWN
:
8390 internal_error (__FILE__
, __LINE__
,
8391 _("remote_insert_hw_breakpoint: reached end of function"));
8396 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8397 struct bp_target_info
*bp_tgt
)
8400 struct remote_state
*rs
= get_remote_state ();
8402 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8404 if (packet_support (PACKET_Z1
) == 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 ();
8416 addr
= remote_address_masked (bp_tgt
->placed_address
);
8417 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8418 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8421 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8423 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8426 case PACKET_UNKNOWN
:
8431 internal_error (__FILE__
, __LINE__
,
8432 _("remote_remove_hw_breakpoint: reached end of function"));
8435 /* Verify memory using the "qCRC:" request. */
8438 remote_verify_memory (struct target_ops
*ops
,
8439 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8441 struct remote_state
*rs
= get_remote_state ();
8442 unsigned long host_crc
, target_crc
;
8445 /* It doesn't make sense to use qCRC if the remote target is
8446 connected but not running. */
8447 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
8449 enum packet_result result
;
8451 /* Make sure the remote is pointing at the right process. */
8452 set_general_process ();
8454 /* FIXME: assumes lma can fit into long. */
8455 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8456 (long) lma
, (long) size
);
8459 /* Be clever; compute the host_crc before waiting for target
8461 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8463 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8465 result
= packet_ok (rs
->buf
,
8466 &remote_protocol_packets
[PACKET_qCRC
]);
8467 if (result
== PACKET_ERROR
)
8469 else if (result
== PACKET_OK
)
8471 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8472 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8474 return (host_crc
== target_crc
);
8478 return simple_verify_memory (ops
, data
, lma
, size
);
8481 /* compare-sections command
8483 With no arguments, compares each loadable section in the exec bfd
8484 with the same memory range on the target, and reports mismatches.
8485 Useful for verifying the image on the target against the exec file. */
8488 compare_sections_command (char *args
, int from_tty
)
8491 struct cleanup
*old_chain
;
8493 const char *sectname
;
8502 error (_("command cannot be used without an exec file"));
8504 /* Make sure the remote is pointing at the right process. */
8505 set_general_process ();
8507 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
8513 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8515 if (!(s
->flags
& SEC_LOAD
))
8516 continue; /* Skip non-loadable section. */
8518 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
8519 continue; /* Skip writeable sections */
8521 size
= bfd_get_section_size (s
);
8523 continue; /* Skip zero-length section. */
8525 sectname
= bfd_get_section_name (exec_bfd
, s
);
8526 if (args
&& strcmp (args
, sectname
) != 0)
8527 continue; /* Not the section selected by user. */
8529 matched
= 1; /* Do this section. */
8532 sectdata
= xmalloc (size
);
8533 old_chain
= make_cleanup (xfree
, sectdata
);
8534 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8536 res
= target_verify_memory (sectdata
, lma
, size
);
8539 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8540 paddress (target_gdbarch (), lma
),
8541 paddress (target_gdbarch (), lma
+ size
));
8543 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8544 paddress (target_gdbarch (), lma
),
8545 paddress (target_gdbarch (), lma
+ size
));
8547 printf_filtered ("matched.\n");
8550 printf_filtered ("MIS-MATCHED!\n");
8554 do_cleanups (old_chain
);
8557 warning (_("One or more sections of the target image does not match\n\
8558 the loaded file\n"));
8559 if (args
&& !matched
)
8560 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8563 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8564 into remote target. The number of bytes written to the remote
8565 target is returned, or -1 for error. */
8567 static enum target_xfer_status
8568 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8569 const char *annex
, const gdb_byte
*writebuf
,
8570 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8571 struct packet_config
*packet
)
8575 struct remote_state
*rs
= get_remote_state ();
8576 int max_size
= get_memory_write_packet_size ();
8578 if (packet
->support
== PACKET_DISABLE
)
8579 return TARGET_XFER_E_IO
;
8581 /* Insert header. */
8582 i
= snprintf (rs
->buf
, max_size
,
8583 "qXfer:%s:write:%s:%s:",
8584 object_name
, annex
? annex
: "",
8585 phex_nz (offset
, sizeof offset
));
8586 max_size
-= (i
+ 1);
8588 /* Escape as much data as fits into rs->buf. */
8589 buf_len
= remote_escape_output
8590 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8592 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8593 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8594 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8595 return TARGET_XFER_E_IO
;
8597 unpack_varlen_hex (rs
->buf
, &n
);
8600 return TARGET_XFER_OK
;
8603 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8604 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8605 number of bytes read is returned, or 0 for EOF, or -1 for error.
8606 The number of bytes read may be less than LEN without indicating an
8607 EOF. PACKET is checked and updated to indicate whether the remote
8608 target supports this object. */
8610 static enum target_xfer_status
8611 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8613 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8614 ULONGEST
*xfered_len
,
8615 struct packet_config
*packet
)
8617 struct remote_state
*rs
= get_remote_state ();
8618 LONGEST i
, n
, packet_len
;
8620 if (packet
->support
== PACKET_DISABLE
)
8621 return TARGET_XFER_E_IO
;
8623 /* Check whether we've cached an end-of-object packet that matches
8625 if (rs
->finished_object
)
8627 if (strcmp (object_name
, rs
->finished_object
) == 0
8628 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8629 && offset
== rs
->finished_offset
)
8630 return TARGET_XFER_EOF
;
8633 /* Otherwise, we're now reading something different. Discard
8635 xfree (rs
->finished_object
);
8636 xfree (rs
->finished_annex
);
8637 rs
->finished_object
= NULL
;
8638 rs
->finished_annex
= NULL
;
8641 /* Request only enough to fit in a single packet. The actual data
8642 may not, since we don't know how much of it will need to be escaped;
8643 the target is free to respond with slightly less data. We subtract
8644 five to account for the response type and the protocol frame. */
8645 n
= min (get_remote_packet_size () - 5, len
);
8646 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8647 object_name
, annex
? annex
: "",
8648 phex_nz (offset
, sizeof offset
),
8649 phex_nz (n
, sizeof n
));
8650 i
= putpkt (rs
->buf
);
8652 return TARGET_XFER_E_IO
;
8655 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8656 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8657 return TARGET_XFER_E_IO
;
8659 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8660 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8662 /* 'm' means there is (or at least might be) more data after this
8663 batch. That does not make sense unless there's at least one byte
8664 of data in this reply. */
8665 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8666 error (_("Remote qXfer reply contained no data."));
8668 /* Got some data. */
8669 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8670 packet_len
- 1, readbuf
, n
);
8672 /* 'l' is an EOF marker, possibly including a final block of data,
8673 or possibly empty. If we have the final block of a non-empty
8674 object, record this fact to bypass a subsequent partial read. */
8675 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8677 rs
->finished_object
= xstrdup (object_name
);
8678 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8679 rs
->finished_offset
= offset
+ i
;
8683 return TARGET_XFER_EOF
;
8687 return TARGET_XFER_OK
;
8691 static enum target_xfer_status
8692 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8693 const char *annex
, gdb_byte
*readbuf
,
8694 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8695 ULONGEST
*xfered_len
)
8697 struct remote_state
*rs
;
8702 set_remote_traceframe ();
8703 set_general_thread (inferior_ptid
);
8705 rs
= get_remote_state ();
8707 /* Handle memory using the standard memory routines. */
8708 if (object
== TARGET_OBJECT_MEMORY
)
8710 /* If the remote target is connected but not running, we should
8711 pass this request down to a lower stratum (e.g. the executable
8713 if (!target_has_execution
)
8714 return TARGET_XFER_EOF
;
8716 if (writebuf
!= NULL
)
8717 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8719 return remote_read_bytes (ops
, offset
, readbuf
, len
, xfered_len
);
8722 /* Handle SPU memory using qxfer packets. */
8723 if (object
== TARGET_OBJECT_SPU
)
8726 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8727 xfered_len
, &remote_protocol_packets
8728 [PACKET_qXfer_spu_read
]);
8730 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8731 xfered_len
, &remote_protocol_packets
8732 [PACKET_qXfer_spu_write
]);
8735 /* Handle extra signal info using qxfer packets. */
8736 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8739 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8740 xfered_len
, &remote_protocol_packets
8741 [PACKET_qXfer_siginfo_read
]);
8743 return remote_write_qxfer (ops
, "siginfo", annex
,
8744 writebuf
, offset
, len
, xfered_len
,
8745 &remote_protocol_packets
8746 [PACKET_qXfer_siginfo_write
]);
8749 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8752 return remote_read_qxfer (ops
, "statictrace", annex
,
8753 readbuf
, offset
, len
, xfered_len
,
8754 &remote_protocol_packets
8755 [PACKET_qXfer_statictrace_read
]);
8757 return TARGET_XFER_E_IO
;
8760 /* Only handle flash writes. */
8761 if (writebuf
!= NULL
)
8767 case TARGET_OBJECT_FLASH
:
8768 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8772 return TARGET_XFER_E_IO
;
8776 /* Map pre-existing objects onto letters. DO NOT do this for new
8777 objects!!! Instead specify new query packets. */
8780 case TARGET_OBJECT_AVR
:
8784 case TARGET_OBJECT_AUXV
:
8785 gdb_assert (annex
== NULL
);
8786 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8788 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8790 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8791 return remote_read_qxfer
8792 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
8793 &remote_protocol_packets
[PACKET_qXfer_features
]);
8795 case TARGET_OBJECT_LIBRARIES
:
8796 return remote_read_qxfer
8797 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
8798 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8800 case TARGET_OBJECT_LIBRARIES_SVR4
:
8801 return remote_read_qxfer
8802 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
8803 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8805 case TARGET_OBJECT_MEMORY_MAP
:
8806 gdb_assert (annex
== NULL
);
8807 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8809 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8811 case TARGET_OBJECT_OSDATA
:
8812 /* Should only get here if we're connected. */
8813 gdb_assert (rs
->remote_desc
);
8814 return remote_read_qxfer
8815 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
8816 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8818 case TARGET_OBJECT_THREADS
:
8819 gdb_assert (annex
== NULL
);
8820 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8822 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8824 case TARGET_OBJECT_TRACEFRAME_INFO
:
8825 gdb_assert (annex
== NULL
);
8826 return remote_read_qxfer
8827 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
8828 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8830 case TARGET_OBJECT_FDPIC
:
8831 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8833 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8835 case TARGET_OBJECT_OPENVMS_UIB
:
8836 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8838 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8840 case TARGET_OBJECT_BTRACE
:
8841 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8843 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8846 return TARGET_XFER_E_IO
;
8849 /* Note: a zero OFFSET and LEN can be used to query the minimum
8851 if (offset
== 0 && len
== 0)
8852 return (get_remote_packet_size ());
8853 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8854 large enough let the caller deal with it. */
8855 if (len
< get_remote_packet_size ())
8856 return TARGET_XFER_E_IO
;
8857 len
= get_remote_packet_size ();
8859 /* Except for querying the minimum buffer size, target must be open. */
8860 if (!rs
->remote_desc
)
8861 error (_("remote query is only available after target open"));
8863 gdb_assert (annex
!= NULL
);
8864 gdb_assert (readbuf
!= NULL
);
8870 /* We used one buffer char for the remote protocol q command and
8871 another for the query type. As the remote protocol encapsulation
8872 uses 4 chars plus one extra in case we are debugging
8873 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8876 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8878 /* Bad caller may have sent forbidden characters. */
8879 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8884 gdb_assert (annex
[i
] == '\0');
8886 i
= putpkt (rs
->buf
);
8888 return TARGET_XFER_E_IO
;
8890 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8891 strcpy ((char *) readbuf
, rs
->buf
);
8893 *xfered_len
= strlen ((char *) readbuf
);
8894 return TARGET_XFER_OK
;
8898 remote_search_memory (struct target_ops
* ops
,
8899 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8900 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8901 CORE_ADDR
*found_addrp
)
8903 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8904 struct remote_state
*rs
= get_remote_state ();
8905 int max_size
= get_memory_write_packet_size ();
8906 struct packet_config
*packet
=
8907 &remote_protocol_packets
[PACKET_qSearch_memory
];
8908 /* Number of packet bytes used to encode the pattern;
8909 this could be more than PATTERN_LEN due to escape characters. */
8910 int escaped_pattern_len
;
8911 /* Amount of pattern that was encodable in the packet. */
8912 int used_pattern_len
;
8915 ULONGEST found_addr
;
8917 /* Don't go to the target if we don't have to.
8918 This is done before checking packet->support to avoid the possibility that
8919 a success for this edge case means the facility works in general. */
8920 if (pattern_len
> search_space_len
)
8922 if (pattern_len
== 0)
8924 *found_addrp
= start_addr
;
8928 /* If we already know the packet isn't supported, fall back to the simple
8929 way of searching memory. */
8931 if (packet_config_support (packet
) == PACKET_DISABLE
)
8933 /* Target doesn't provided special support, fall back and use the
8934 standard support (copy memory and do the search here). */
8935 return simple_search_memory (ops
, start_addr
, search_space_len
,
8936 pattern
, pattern_len
, found_addrp
);
8939 /* Make sure the remote is pointing at the right process. */
8940 set_general_process ();
8942 /* Insert header. */
8943 i
= snprintf (rs
->buf
, max_size
,
8944 "qSearch:memory:%s;%s;",
8945 phex_nz (start_addr
, addr_size
),
8946 phex_nz (search_space_len
, sizeof (search_space_len
)));
8947 max_size
-= (i
+ 1);
8949 /* Escape as much data as fits into rs->buf. */
8950 escaped_pattern_len
=
8951 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
8952 &used_pattern_len
, max_size
);
8954 /* Bail if the pattern is too large. */
8955 if (used_pattern_len
!= pattern_len
)
8956 error (_("Pattern is too large to transmit to remote target."));
8958 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8959 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8960 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8962 /* The request may not have worked because the command is not
8963 supported. If so, fall back to the simple way. */
8964 if (packet
->support
== PACKET_DISABLE
)
8966 return simple_search_memory (ops
, start_addr
, search_space_len
,
8967 pattern
, pattern_len
, found_addrp
);
8972 if (rs
->buf
[0] == '0')
8974 else if (rs
->buf
[0] == '1')
8977 if (rs
->buf
[1] != ',')
8978 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8979 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8980 *found_addrp
= found_addr
;
8983 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8989 remote_rcmd (struct target_ops
*self
, char *command
,
8990 struct ui_file
*outbuf
)
8992 struct remote_state
*rs
= get_remote_state ();
8995 if (!rs
->remote_desc
)
8996 error (_("remote rcmd is only available after target open"));
8998 /* Send a NULL command across as an empty command. */
8999 if (command
== NULL
)
9002 /* The query prefix. */
9003 strcpy (rs
->buf
, "qRcmd,");
9004 p
= strchr (rs
->buf
, '\0');
9006 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9007 > get_remote_packet_size ())
9008 error (_("\"monitor\" command ``%s'' is too long."), command
);
9010 /* Encode the actual command. */
9011 bin2hex ((gdb_byte
*) command
, p
, strlen (command
));
9013 if (putpkt (rs
->buf
) < 0)
9014 error (_("Communication problem with target."));
9016 /* get/display the response */
9021 /* XXX - see also remote_get_noisy_reply(). */
9022 QUIT
; /* Allow user to bail out with ^C. */
9024 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9026 /* Timeout. Continue to (try to) read responses.
9027 This is better than stopping with an error, assuming the stub
9028 is still executing the (long) monitor command.
9029 If needed, the user can interrupt gdb using C-c, obtaining
9030 an effect similar to stop on timeout. */
9035 error (_("Target does not support this command."));
9036 if (buf
[0] == 'O' && buf
[1] != 'K')
9038 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9041 if (strcmp (buf
, "OK") == 0)
9043 if (strlen (buf
) == 3 && buf
[0] == 'E'
9044 && isdigit (buf
[1]) && isdigit (buf
[2]))
9046 error (_("Protocol error with Rcmd"));
9048 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9050 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9052 fputc_unfiltered (c
, outbuf
);
9058 static VEC(mem_region_s
) *
9059 remote_memory_map (struct target_ops
*ops
)
9061 VEC(mem_region_s
) *result
= NULL
;
9062 char *text
= target_read_stralloc (¤t_target
,
9063 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9067 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9069 result
= parse_memory_map (text
);
9070 do_cleanups (back_to
);
9077 packet_command (char *args
, int from_tty
)
9079 struct remote_state
*rs
= get_remote_state ();
9081 if (!rs
->remote_desc
)
9082 error (_("command can only be used with remote target"));
9085 error (_("remote-packet command requires packet text as argument"));
9087 puts_filtered ("sending: ");
9088 print_packet (args
);
9089 puts_filtered ("\n");
9092 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9093 puts_filtered ("received: ");
9094 print_packet (rs
->buf
);
9095 puts_filtered ("\n");
9099 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9101 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9103 static void threadset_test_cmd (char *cmd
, int tty
);
9105 static void threadalive_test (char *cmd
, int tty
);
9107 static void threadlist_test_cmd (char *cmd
, int tty
);
9109 int get_and_display_threadinfo (threadref
*ref
);
9111 static void threadinfo_test_cmd (char *cmd
, int tty
);
9113 static int thread_display_step (threadref
*ref
, void *context
);
9115 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9117 static void init_remote_threadtests (void);
9119 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9122 threadset_test_cmd (char *cmd
, int tty
)
9124 int sample_thread
= SAMPLE_THREAD
;
9126 printf_filtered (_("Remote threadset test\n"));
9127 set_general_thread (sample_thread
);
9132 threadalive_test (char *cmd
, int tty
)
9134 int sample_thread
= SAMPLE_THREAD
;
9135 int pid
= ptid_get_pid (inferior_ptid
);
9136 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
9138 if (remote_thread_alive (ptid
))
9139 printf_filtered ("PASS: Thread alive test\n");
9141 printf_filtered ("FAIL: Thread alive test\n");
9144 void output_threadid (char *title
, threadref
*ref
);
9147 output_threadid (char *title
, threadref
*ref
)
9151 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9153 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9157 threadlist_test_cmd (char *cmd
, int tty
)
9160 threadref nextthread
;
9161 int done
, result_count
;
9162 threadref threadlist
[3];
9164 printf_filtered ("Remote Threadlist test\n");
9165 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9166 &result_count
, &threadlist
[0]))
9167 printf_filtered ("FAIL: threadlist test\n");
9170 threadref
*scan
= threadlist
;
9171 threadref
*limit
= scan
+ result_count
;
9173 while (scan
< limit
)
9174 output_threadid (" thread ", scan
++);
9179 display_thread_info (struct gdb_ext_thread_info
*info
)
9181 output_threadid ("Threadid: ", &info
->threadid
);
9182 printf_filtered ("Name: %s\n ", info
->shortname
);
9183 printf_filtered ("State: %s\n", info
->display
);
9184 printf_filtered ("other: %s\n\n", info
->more_display
);
9188 get_and_display_threadinfo (threadref
*ref
)
9192 struct gdb_ext_thread_info threadinfo
;
9194 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9195 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9196 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9197 display_thread_info (&threadinfo
);
9202 threadinfo_test_cmd (char *cmd
, int tty
)
9204 int athread
= SAMPLE_THREAD
;
9208 int_to_threadref (&thread
, athread
);
9209 printf_filtered ("Remote Threadinfo test\n");
9210 if (!get_and_display_threadinfo (&thread
))
9211 printf_filtered ("FAIL cannot get thread info\n");
9215 thread_display_step (threadref
*ref
, void *context
)
9217 /* output_threadid(" threadstep ",ref); *//* simple test */
9218 return get_and_display_threadinfo (ref
);
9222 threadlist_update_test_cmd (char *cmd
, int tty
)
9224 printf_filtered ("Remote Threadlist update test\n");
9225 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9229 init_remote_threadtests (void)
9231 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9232 _("Fetch and print the remote list of "
9233 "thread identifiers, one pkt only"));
9234 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9235 _("Fetch and display info about one thread"));
9236 add_com ("tset", class_obscure
, threadset_test_cmd
,
9237 _("Test setting to a different thread"));
9238 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9239 _("Iterate through updating all remote thread info"));
9240 add_com ("talive", class_obscure
, threadalive_test
,
9241 _(" Remote thread alive test "));
9246 /* Convert a thread ID to a string. Returns the string in a static
9250 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9252 static char buf
[64];
9253 struct remote_state
*rs
= get_remote_state ();
9255 if (ptid_equal (ptid
, null_ptid
))
9256 return normal_pid_to_str (ptid
);
9257 else if (ptid_is_pid (ptid
))
9259 /* Printing an inferior target id. */
9261 /* When multi-process extensions are off, there's no way in the
9262 remote protocol to know the remote process id, if there's any
9263 at all. There's one exception --- when we're connected with
9264 target extended-remote, and we manually attached to a process
9265 with "attach PID". We don't record anywhere a flag that
9266 allows us to distinguish that case from the case of
9267 connecting with extended-remote and the stub already being
9268 attached to a process, and reporting yes to qAttached, hence
9269 no smart special casing here. */
9270 if (!remote_multi_process_p (rs
))
9272 xsnprintf (buf
, sizeof buf
, "Remote target");
9276 return normal_pid_to_str (ptid
);
9280 if (ptid_equal (magic_null_ptid
, ptid
))
9281 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9282 else if (rs
->extended
&& remote_multi_process_p (rs
))
9283 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9284 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
9286 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9287 ptid_get_lwp (ptid
));
9292 /* Get the address of the thread local variable in OBJFILE which is
9293 stored at OFFSET within the thread local storage for thread PTID. */
9296 remote_get_thread_local_address (struct target_ops
*ops
,
9297 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9299 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
9301 struct remote_state
*rs
= get_remote_state ();
9303 char *endp
= rs
->buf
+ get_remote_packet_size ();
9304 enum packet_result result
;
9306 strcpy (p
, "qGetTLSAddr:");
9308 p
= write_ptid (p
, endp
, ptid
);
9310 p
+= hexnumstr (p
, offset
);
9312 p
+= hexnumstr (p
, lm
);
9316 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9317 result
= packet_ok (rs
->buf
,
9318 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9319 if (result
== PACKET_OK
)
9323 unpack_varlen_hex (rs
->buf
, &result
);
9326 else if (result
== PACKET_UNKNOWN
)
9327 throw_error (TLS_GENERIC_ERROR
,
9328 _("Remote target doesn't support qGetTLSAddr packet"));
9330 throw_error (TLS_GENERIC_ERROR
,
9331 _("Remote target failed to process qGetTLSAddr request"));
9334 throw_error (TLS_GENERIC_ERROR
,
9335 _("TLS not supported or disabled on this target"));
9340 /* Provide thread local base, i.e. Thread Information Block address.
9341 Returns 1 if ptid is found and thread_local_base is non zero. */
9344 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
9346 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
9348 struct remote_state
*rs
= get_remote_state ();
9350 char *endp
= rs
->buf
+ get_remote_packet_size ();
9351 enum packet_result result
;
9353 strcpy (p
, "qGetTIBAddr:");
9355 p
= write_ptid (p
, endp
, ptid
);
9359 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9360 result
= packet_ok (rs
->buf
,
9361 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9362 if (result
== PACKET_OK
)
9366 unpack_varlen_hex (rs
->buf
, &result
);
9368 *addr
= (CORE_ADDR
) result
;
9371 else if (result
== PACKET_UNKNOWN
)
9372 error (_("Remote target doesn't support qGetTIBAddr packet"));
9374 error (_("Remote target failed to process qGetTIBAddr request"));
9377 error (_("qGetTIBAddr not supported or disabled on this target"));
9382 /* Support for inferring a target description based on the current
9383 architecture and the size of a 'g' packet. While the 'g' packet
9384 can have any size (since optional registers can be left off the
9385 end), some sizes are easily recognizable given knowledge of the
9386 approximate architecture. */
9388 struct remote_g_packet_guess
9391 const struct target_desc
*tdesc
;
9393 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9394 DEF_VEC_O(remote_g_packet_guess_s
);
9396 struct remote_g_packet_data
9398 VEC(remote_g_packet_guess_s
) *guesses
;
9401 static struct gdbarch_data
*remote_g_packet_data_handle
;
9404 remote_g_packet_data_init (struct obstack
*obstack
)
9406 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9410 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9411 const struct target_desc
*tdesc
)
9413 struct remote_g_packet_data
*data
9414 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9415 struct remote_g_packet_guess new_guess
, *guess
;
9418 gdb_assert (tdesc
!= NULL
);
9421 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9423 if (guess
->bytes
== bytes
)
9424 internal_error (__FILE__
, __LINE__
,
9425 _("Duplicate g packet description added for size %d"),
9428 new_guess
.bytes
= bytes
;
9429 new_guess
.tdesc
= tdesc
;
9430 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9433 /* Return 1 if remote_read_description would do anything on this target
9434 and architecture, 0 otherwise. */
9437 remote_read_description_p (struct target_ops
*target
)
9439 struct remote_g_packet_data
*data
9440 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9442 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9448 static const struct target_desc
*
9449 remote_read_description (struct target_ops
*target
)
9451 struct remote_g_packet_data
*data
9452 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9454 /* Do not try this during initial connection, when we do not know
9455 whether there is a running but stopped thread. */
9456 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9457 return target
->beneath
->to_read_description (target
->beneath
);
9459 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9461 struct remote_g_packet_guess
*guess
;
9463 int bytes
= send_g_packet ();
9466 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9468 if (guess
->bytes
== bytes
)
9469 return guess
->tdesc
;
9471 /* We discard the g packet. A minor optimization would be to
9472 hold on to it, and fill the register cache once we have selected
9473 an architecture, but it's too tricky to do safely. */
9476 return target
->beneath
->to_read_description (target
->beneath
);
9479 /* Remote file transfer support. This is host-initiated I/O, not
9480 target-initiated; for target-initiated, see remote-fileio.c. */
9482 /* If *LEFT is at least the length of STRING, copy STRING to
9483 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9484 decrease *LEFT. Otherwise raise an error. */
9487 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9489 int len
= strlen (string
);
9492 error (_("Packet too long for target."));
9494 memcpy (*buffer
, string
, len
);
9498 /* NUL-terminate the buffer as a convenience, if there is
9504 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9505 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9506 decrease *LEFT. Otherwise raise an error. */
9509 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9512 if (2 * len
> *left
)
9513 error (_("Packet too long for target."));
9515 bin2hex (bytes
, *buffer
, len
);
9519 /* NUL-terminate the buffer as a convenience, if there is
9525 /* If *LEFT is large enough, convert VALUE to hex and add it to
9526 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9527 decrease *LEFT. Otherwise raise an error. */
9530 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9532 int len
= hexnumlen (value
);
9535 error (_("Packet too long for target."));
9537 hexnumstr (*buffer
, value
);
9541 /* NUL-terminate the buffer as a convenience, if there is
9547 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9548 value, *REMOTE_ERRNO to the remote error number or zero if none
9549 was included, and *ATTACHMENT to point to the start of the annex
9550 if any. The length of the packet isn't needed here; there may
9551 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9553 Return 0 if the packet could be parsed, -1 if it could not. If
9554 -1 is returned, the other variables may not be initialized. */
9557 remote_hostio_parse_result (char *buffer
, int *retcode
,
9558 int *remote_errno
, char **attachment
)
9565 if (buffer
[0] != 'F')
9569 *retcode
= strtol (&buffer
[1], &p
, 16);
9570 if (errno
!= 0 || p
== &buffer
[1])
9573 /* Check for ",errno". */
9577 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9578 if (errno
!= 0 || p
+ 1 == p2
)
9583 /* Check for ";attachment". If there is no attachment, the
9584 packet should end here. */
9587 *attachment
= p
+ 1;
9590 else if (*p
== '\0')
9596 /* Send a prepared I/O packet to the target and read its response.
9597 The prepared packet is in the global RS->BUF before this function
9598 is called, and the answer is there when we return.
9600 COMMAND_BYTES is the length of the request to send, which may include
9601 binary data. WHICH_PACKET is the packet configuration to check
9602 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9603 is set to the error number and -1 is returned. Otherwise the value
9604 returned by the function is returned.
9606 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9607 attachment is expected; an error will be reported if there's a
9608 mismatch. If one is found, *ATTACHMENT will be set to point into
9609 the packet buffer and *ATTACHMENT_LEN will be set to the
9610 attachment's length. */
9613 remote_hostio_send_command (int command_bytes
, int which_packet
,
9614 int *remote_errno
, char **attachment
,
9615 int *attachment_len
)
9617 struct remote_state
*rs
= get_remote_state ();
9618 int ret
, bytes_read
;
9619 char *attachment_tmp
;
9621 if (!rs
->remote_desc
9622 || packet_support (which_packet
) == PACKET_DISABLE
)
9624 *remote_errno
= FILEIO_ENOSYS
;
9628 putpkt_binary (rs
->buf
, command_bytes
);
9629 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9631 /* If it timed out, something is wrong. Don't try to parse the
9635 *remote_errno
= FILEIO_EINVAL
;
9639 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9642 *remote_errno
= FILEIO_EINVAL
;
9644 case PACKET_UNKNOWN
:
9645 *remote_errno
= FILEIO_ENOSYS
;
9651 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9654 *remote_errno
= FILEIO_EINVAL
;
9658 /* Make sure we saw an attachment if and only if we expected one. */
9659 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9660 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9662 *remote_errno
= FILEIO_EINVAL
;
9666 /* If an attachment was found, it must point into the packet buffer;
9667 work out how many bytes there were. */
9668 if (attachment_tmp
!= NULL
)
9670 *attachment
= attachment_tmp
;
9671 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9677 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9678 remote file descriptor, or -1 if an error occurs (and set
9682 remote_hostio_open (struct target_ops
*self
,
9683 const char *filename
, int flags
, int mode
,
9686 struct remote_state
*rs
= get_remote_state ();
9688 int left
= get_remote_packet_size () - 1;
9690 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9692 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9694 remote_buffer_add_string (&p
, &left
, ",");
9696 remote_buffer_add_int (&p
, &left
, flags
);
9697 remote_buffer_add_string (&p
, &left
, ",");
9699 remote_buffer_add_int (&p
, &left
, mode
);
9701 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9702 remote_errno
, NULL
, NULL
);
9705 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9706 Return the number of bytes written, or -1 if an error occurs (and
9707 set *REMOTE_ERRNO). */
9710 remote_hostio_pwrite (struct target_ops
*self
,
9711 int fd
, const gdb_byte
*write_buf
, int len
,
9712 ULONGEST offset
, int *remote_errno
)
9714 struct remote_state
*rs
= get_remote_state ();
9716 int left
= get_remote_packet_size ();
9719 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9721 remote_buffer_add_int (&p
, &left
, fd
);
9722 remote_buffer_add_string (&p
, &left
, ",");
9724 remote_buffer_add_int (&p
, &left
, offset
);
9725 remote_buffer_add_string (&p
, &left
, ",");
9727 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9728 get_remote_packet_size () - (p
- rs
->buf
));
9730 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9731 remote_errno
, NULL
, NULL
);
9734 /* Read up to LEN bytes FD on the remote target into READ_BUF
9735 Return the number of bytes read, or -1 if an error occurs (and
9736 set *REMOTE_ERRNO). */
9739 remote_hostio_pread (struct target_ops
*self
,
9740 int fd
, gdb_byte
*read_buf
, int len
,
9741 ULONGEST offset
, int *remote_errno
)
9743 struct remote_state
*rs
= get_remote_state ();
9746 int left
= get_remote_packet_size ();
9747 int ret
, attachment_len
;
9750 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9752 remote_buffer_add_int (&p
, &left
, fd
);
9753 remote_buffer_add_string (&p
, &left
, ",");
9755 remote_buffer_add_int (&p
, &left
, len
);
9756 remote_buffer_add_string (&p
, &left
, ",");
9758 remote_buffer_add_int (&p
, &left
, offset
);
9760 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9761 remote_errno
, &attachment
,
9767 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9769 if (read_len
!= ret
)
9770 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9775 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9776 (and set *REMOTE_ERRNO). */
9779 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9781 struct remote_state
*rs
= get_remote_state ();
9783 int left
= get_remote_packet_size () - 1;
9785 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9787 remote_buffer_add_int (&p
, &left
, fd
);
9789 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9790 remote_errno
, NULL
, NULL
);
9793 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9794 occurs (and set *REMOTE_ERRNO). */
9797 remote_hostio_unlink (struct target_ops
*self
,
9798 const char *filename
, int *remote_errno
)
9800 struct remote_state
*rs
= get_remote_state ();
9802 int left
= get_remote_packet_size () - 1;
9804 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9806 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9809 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9810 remote_errno
, NULL
, NULL
);
9813 /* Read value of symbolic link FILENAME on the remote target. Return
9814 a null-terminated string allocated via xmalloc, or NULL if an error
9815 occurs (and set *REMOTE_ERRNO). */
9818 remote_hostio_readlink (struct target_ops
*self
,
9819 const char *filename
, int *remote_errno
)
9821 struct remote_state
*rs
= get_remote_state ();
9824 int left
= get_remote_packet_size ();
9825 int len
, attachment_len
;
9829 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9831 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9834 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9835 remote_errno
, &attachment
,
9841 ret
= xmalloc (len
+ 1);
9843 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9844 (gdb_byte
*) ret
, len
);
9845 if (read_len
!= len
)
9846 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9853 remote_fileio_errno_to_host (int errnum
)
9877 case FILEIO_ENOTDIR
:
9897 case FILEIO_ENAMETOOLONG
:
9898 return ENAMETOOLONG
;
9904 remote_hostio_error (int errnum
)
9906 int host_error
= remote_fileio_errno_to_host (errnum
);
9908 if (host_error
== -1)
9909 error (_("Unknown remote I/O error %d"), errnum
);
9911 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9915 remote_hostio_close_cleanup (void *opaque
)
9917 int fd
= *(int *) opaque
;
9920 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9925 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9927 const char *filename
= bfd_get_filename (abfd
);
9928 int fd
, remote_errno
;
9931 gdb_assert (remote_filename_p (filename
));
9933 fd
= remote_hostio_open (find_target_at (process_stratum
),
9934 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9937 errno
= remote_fileio_errno_to_host (remote_errno
);
9938 bfd_set_error (bfd_error_system_call
);
9942 stream
= xmalloc (sizeof (int));
9948 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9950 int fd
= *(int *)stream
;
9955 /* Ignore errors on close; these may happen if the remote
9956 connection was already torn down. */
9957 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9959 /* Zero means success. */
9964 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9965 file_ptr nbytes
, file_ptr offset
)
9967 int fd
= *(int *)stream
;
9969 file_ptr pos
, bytes
;
9972 while (nbytes
> pos
)
9974 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
9975 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
9976 offset
+ pos
, &remote_errno
);
9978 /* Success, but no bytes, means end-of-file. */
9982 errno
= remote_fileio_errno_to_host (remote_errno
);
9983 bfd_set_error (bfd_error_system_call
);
9994 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9996 /* FIXME: We should probably implement remote_hostio_stat. */
9997 sb
->st_size
= INT_MAX
;
10002 remote_filename_p (const char *filename
)
10004 return strncmp (filename
,
10005 REMOTE_SYSROOT_PREFIX
,
10006 sizeof (REMOTE_SYSROOT_PREFIX
) - 1) == 0;
10010 remote_bfd_open (const char *remote_file
, const char *target
)
10012 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10013 remote_bfd_iovec_open
, NULL
,
10014 remote_bfd_iovec_pread
,
10015 remote_bfd_iovec_close
,
10016 remote_bfd_iovec_stat
);
10022 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10024 struct cleanup
*back_to
, *close_cleanup
;
10025 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10028 int bytes_in_buffer
;
10031 struct remote_state
*rs
= get_remote_state ();
10033 if (!rs
->remote_desc
)
10034 error (_("command can only be used with remote target"));
10036 file
= gdb_fopen_cloexec (local_file
, "rb");
10038 perror_with_name (local_file
);
10039 back_to
= make_cleanup_fclose (file
);
10041 fd
= remote_hostio_open (find_target_at (process_stratum
),
10042 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10044 0700, &remote_errno
);
10046 remote_hostio_error (remote_errno
);
10048 /* Send up to this many bytes at once. They won't all fit in the
10049 remote packet limit, so we'll transfer slightly fewer. */
10050 io_size
= get_remote_packet_size ();
10051 buffer
= xmalloc (io_size
);
10052 make_cleanup (xfree
, buffer
);
10054 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10056 bytes_in_buffer
= 0;
10059 while (bytes_in_buffer
|| !saw_eof
)
10063 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10064 io_size
- bytes_in_buffer
,
10069 error (_("Error reading %s."), local_file
);
10072 /* EOF. Unless there is something still in the
10073 buffer from the last iteration, we are done. */
10075 if (bytes_in_buffer
== 0)
10083 bytes
+= bytes_in_buffer
;
10084 bytes_in_buffer
= 0;
10086 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10088 offset
, &remote_errno
);
10091 remote_hostio_error (remote_errno
);
10092 else if (retcode
== 0)
10093 error (_("Remote write of %d bytes returned 0!"), bytes
);
10094 else if (retcode
< bytes
)
10096 /* Short write. Save the rest of the read data for the next
10098 bytes_in_buffer
= bytes
- retcode
;
10099 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10105 discard_cleanups (close_cleanup
);
10106 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10107 remote_hostio_error (remote_errno
);
10110 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10111 do_cleanups (back_to
);
10115 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10117 struct cleanup
*back_to
, *close_cleanup
;
10118 int fd
, remote_errno
, bytes
, io_size
;
10122 struct remote_state
*rs
= get_remote_state ();
10124 if (!rs
->remote_desc
)
10125 error (_("command can only be used with remote target"));
10127 fd
= remote_hostio_open (find_target_at (process_stratum
),
10128 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10130 remote_hostio_error (remote_errno
);
10132 file
= gdb_fopen_cloexec (local_file
, "wb");
10134 perror_with_name (local_file
);
10135 back_to
= make_cleanup_fclose (file
);
10137 /* Send up to this many bytes at once. They won't all fit in the
10138 remote packet limit, so we'll transfer slightly fewer. */
10139 io_size
= get_remote_packet_size ();
10140 buffer
= xmalloc (io_size
);
10141 make_cleanup (xfree
, buffer
);
10143 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10148 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10149 fd
, buffer
, io_size
, offset
, &remote_errno
);
10151 /* Success, but no bytes, means end-of-file. */
10154 remote_hostio_error (remote_errno
);
10158 bytes
= fwrite (buffer
, 1, bytes
, file
);
10160 perror_with_name (local_file
);
10163 discard_cleanups (close_cleanup
);
10164 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10165 remote_hostio_error (remote_errno
);
10168 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10169 do_cleanups (back_to
);
10173 remote_file_delete (const char *remote_file
, int from_tty
)
10175 int retcode
, remote_errno
;
10176 struct remote_state
*rs
= get_remote_state ();
10178 if (!rs
->remote_desc
)
10179 error (_("command can only be used with remote target"));
10181 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10182 remote_file
, &remote_errno
);
10184 remote_hostio_error (remote_errno
);
10187 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10191 remote_put_command (char *args
, int from_tty
)
10193 struct cleanup
*back_to
;
10197 error_no_arg (_("file to put"));
10199 argv
= gdb_buildargv (args
);
10200 back_to
= make_cleanup_freeargv (argv
);
10201 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10202 error (_("Invalid parameters to remote put"));
10204 remote_file_put (argv
[0], argv
[1], from_tty
);
10206 do_cleanups (back_to
);
10210 remote_get_command (char *args
, int from_tty
)
10212 struct cleanup
*back_to
;
10216 error_no_arg (_("file to get"));
10218 argv
= gdb_buildargv (args
);
10219 back_to
= make_cleanup_freeargv (argv
);
10220 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10221 error (_("Invalid parameters to remote get"));
10223 remote_file_get (argv
[0], argv
[1], from_tty
);
10225 do_cleanups (back_to
);
10229 remote_delete_command (char *args
, int from_tty
)
10231 struct cleanup
*back_to
;
10235 error_no_arg (_("file to delete"));
10237 argv
= gdb_buildargv (args
);
10238 back_to
= make_cleanup_freeargv (argv
);
10239 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10240 error (_("Invalid parameters to remote delete"));
10242 remote_file_delete (argv
[0], from_tty
);
10244 do_cleanups (back_to
);
10248 remote_command (char *args
, int from_tty
)
10250 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10254 remote_can_execute_reverse (struct target_ops
*self
)
10256 if (packet_support (PACKET_bs
) == PACKET_ENABLE
10257 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
10264 remote_supports_non_stop (struct target_ops
*self
)
10270 remote_supports_disable_randomization (struct target_ops
*self
)
10272 /* Only supported in extended mode. */
10277 remote_supports_multi_process (struct target_ops
*self
)
10279 struct remote_state
*rs
= get_remote_state ();
10281 /* Only extended-remote handles being attached to multiple
10282 processes, even though plain remote can use the multi-process
10283 thread id extensions, so that GDB knows the target process's
10285 return rs
->extended
&& remote_multi_process_p (rs
);
10289 remote_supports_cond_tracepoints (void)
10291 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
10295 remote_supports_cond_breakpoints (struct target_ops
*self
)
10297 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
10301 remote_supports_fast_tracepoints (void)
10303 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
10307 remote_supports_static_tracepoints (void)
10309 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
10313 remote_supports_install_in_trace (void)
10315 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
10319 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10321 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
10326 remote_supports_string_tracing (struct target_ops
*self
)
10328 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
10332 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10334 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
10338 remote_trace_init (struct target_ops
*self
)
10341 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10342 if (strcmp (target_buf
, "OK") != 0)
10343 error (_("Target does not support this command."));
10346 static void free_actions_list (char **actions_list
);
10347 static void free_actions_list_cleanup_wrapper (void *);
10349 free_actions_list_cleanup_wrapper (void *al
)
10351 free_actions_list (al
);
10355 free_actions_list (char **actions_list
)
10359 if (actions_list
== 0)
10362 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10363 xfree (actions_list
[ndx
]);
10365 xfree (actions_list
);
10368 /* Recursive routine to walk through command list including loops, and
10369 download packets for each command. */
10372 remote_download_command_source (int num
, ULONGEST addr
,
10373 struct command_line
*cmds
)
10375 struct remote_state
*rs
= get_remote_state ();
10376 struct command_line
*cmd
;
10378 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10380 QUIT
; /* Allow user to bail out with ^C. */
10381 strcpy (rs
->buf
, "QTDPsrc:");
10382 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10383 rs
->buf
+ strlen (rs
->buf
),
10384 rs
->buf_size
- strlen (rs
->buf
));
10386 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10387 if (strcmp (target_buf
, "OK"))
10388 warning (_("Target does not support source download."));
10390 if (cmd
->control_type
== while_control
10391 || cmd
->control_type
== while_stepping_control
)
10393 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10395 QUIT
; /* Allow user to bail out with ^C. */
10396 strcpy (rs
->buf
, "QTDPsrc:");
10397 encode_source_string (num
, addr
, "cmd", "end",
10398 rs
->buf
+ strlen (rs
->buf
),
10399 rs
->buf_size
- strlen (rs
->buf
));
10401 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10402 if (strcmp (target_buf
, "OK"))
10403 warning (_("Target does not support source download."));
10409 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10411 #define BUF_SIZE 2048
10415 char buf
[BUF_SIZE
];
10416 char **tdp_actions
;
10417 char **stepping_actions
;
10419 struct cleanup
*old_chain
= NULL
;
10420 struct agent_expr
*aexpr
;
10421 struct cleanup
*aexpr_chain
= NULL
;
10423 struct breakpoint
*b
= loc
->owner
;
10424 struct tracepoint
*t
= (struct tracepoint
*) b
;
10426 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10427 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10429 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10432 tpaddr
= loc
->address
;
10433 sprintf_vma (addrbuf
, tpaddr
);
10434 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10435 addrbuf
, /* address */
10436 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10437 t
->step_count
, t
->pass_count
);
10438 /* Fast tracepoints are mostly handled by the target, but we can
10439 tell the target how big of an instruction block should be moved
10441 if (b
->type
== bp_fast_tracepoint
)
10443 /* Only test for support at download time; we may not know
10444 target capabilities at definition time. */
10445 if (remote_supports_fast_tracepoints ())
10449 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10450 tpaddr
, &isize
, NULL
))
10451 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10454 /* If it passed validation at definition but fails now,
10455 something is very wrong. */
10456 internal_error (__FILE__
, __LINE__
,
10457 _("Fast tracepoint not "
10458 "valid during download"));
10461 /* Fast tracepoints are functionally identical to regular
10462 tracepoints, so don't take lack of support as a reason to
10463 give up on the trace run. */
10464 warning (_("Target does not support fast tracepoints, "
10465 "downloading %d as regular tracepoint"), b
->number
);
10467 else if (b
->type
== bp_static_tracepoint
)
10469 /* Only test for support at download time; we may not know
10470 target capabilities at definition time. */
10471 if (remote_supports_static_tracepoints ())
10473 struct static_tracepoint_marker marker
;
10475 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10476 strcat (buf
, ":S");
10478 error (_("Static tracepoint not valid during download"));
10481 /* Fast tracepoints are functionally identical to regular
10482 tracepoints, so don't take lack of support as a reason
10483 to give up on the trace run. */
10484 error (_("Target does not support static tracepoints"));
10486 /* If the tracepoint has a conditional, make it into an agent
10487 expression and append to the definition. */
10490 /* Only test support at download time, we may not know target
10491 capabilities at definition time. */
10492 if (remote_supports_cond_tracepoints ())
10494 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10495 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10496 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10498 pkt
= buf
+ strlen (buf
);
10499 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10500 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10502 do_cleanups (aexpr_chain
);
10505 warning (_("Target does not support conditional tracepoints, "
10506 "ignoring tp %d cond"), b
->number
);
10509 if (b
->commands
|| *default_collect
)
10512 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10513 if (strcmp (target_buf
, "OK"))
10514 error (_("Target does not support tracepoints."));
10516 /* do_single_steps (t); */
10519 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10521 QUIT
; /* Allow user to bail out with ^C. */
10522 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10523 b
->number
, addrbuf
, /* address */
10525 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10528 remote_get_noisy_reply (&target_buf
,
10530 if (strcmp (target_buf
, "OK"))
10531 error (_("Error on target while setting tracepoints."));
10534 if (stepping_actions
)
10536 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10538 QUIT
; /* Allow user to bail out with ^C. */
10539 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10540 b
->number
, addrbuf
, /* address */
10541 ((ndx
== 0) ? "S" : ""),
10542 stepping_actions
[ndx
],
10543 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10545 remote_get_noisy_reply (&target_buf
,
10547 if (strcmp (target_buf
, "OK"))
10548 error (_("Error on target while setting tracepoints."));
10552 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
10554 if (b
->addr_string
)
10556 strcpy (buf
, "QTDPsrc:");
10557 encode_source_string (b
->number
, loc
->address
,
10558 "at", b
->addr_string
, buf
+ strlen (buf
),
10559 2048 - strlen (buf
));
10562 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10563 if (strcmp (target_buf
, "OK"))
10564 warning (_("Target does not support source download."));
10566 if (b
->cond_string
)
10568 strcpy (buf
, "QTDPsrc:");
10569 encode_source_string (b
->number
, loc
->address
,
10570 "cond", b
->cond_string
, buf
+ strlen (buf
),
10571 2048 - strlen (buf
));
10573 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10574 if (strcmp (target_buf
, "OK"))
10575 warning (_("Target does not support source download."));
10577 remote_download_command_source (b
->number
, loc
->address
,
10578 breakpoint_commands (b
));
10581 do_cleanups (old_chain
);
10585 remote_can_download_tracepoint (struct target_ops
*self
)
10587 struct remote_state
*rs
= get_remote_state ();
10588 struct trace_status
*ts
;
10591 /* Don't try to install tracepoints until we've relocated our
10592 symbols, and fetched and merged the target's tracepoint list with
10594 if (rs
->starting_up
)
10597 ts
= current_trace_status ();
10598 status
= remote_get_trace_status (self
, ts
);
10600 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10603 /* If we are in a tracing experiment, but remote stub doesn't support
10604 installing tracepoint in trace, we have to return. */
10605 if (!remote_supports_install_in_trace ())
10613 remote_download_trace_state_variable (struct target_ops
*self
,
10614 struct trace_state_variable
*tsv
)
10616 struct remote_state
*rs
= get_remote_state ();
10619 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10620 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10622 p
= rs
->buf
+ strlen (rs
->buf
);
10623 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10624 error (_("Trace state variable name too long for tsv definition packet"));
10625 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10628 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10629 if (*target_buf
== '\0')
10630 error (_("Target does not support this command."));
10631 if (strcmp (target_buf
, "OK") != 0)
10632 error (_("Error on target while downloading trace state variable."));
10636 remote_enable_tracepoint (struct target_ops
*self
,
10637 struct bp_location
*location
)
10639 struct remote_state
*rs
= get_remote_state ();
10642 sprintf_vma (addr_buf
, location
->address
);
10643 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10644 location
->owner
->number
, addr_buf
);
10646 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10647 if (*rs
->buf
== '\0')
10648 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10649 if (strcmp (rs
->buf
, "OK") != 0)
10650 error (_("Error on target while enabling tracepoint."));
10654 remote_disable_tracepoint (struct target_ops
*self
,
10655 struct bp_location
*location
)
10657 struct remote_state
*rs
= get_remote_state ();
10660 sprintf_vma (addr_buf
, location
->address
);
10661 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10662 location
->owner
->number
, addr_buf
);
10664 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10665 if (*rs
->buf
== '\0')
10666 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10667 if (strcmp (rs
->buf
, "OK") != 0)
10668 error (_("Error on target while disabling tracepoint."));
10672 remote_trace_set_readonly_regions (struct target_ops
*self
)
10676 bfd_size_type size
;
10682 return; /* No information to give. */
10684 strcpy (target_buf
, "QTro");
10685 offset
= strlen (target_buf
);
10686 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10688 char tmp1
[40], tmp2
[40];
10691 if ((s
->flags
& SEC_LOAD
) == 0 ||
10692 /* (s->flags & SEC_CODE) == 0 || */
10693 (s
->flags
& SEC_READONLY
) == 0)
10697 vma
= bfd_get_section_vma (abfd
, s
);
10698 size
= bfd_get_section_size (s
);
10699 sprintf_vma (tmp1
, vma
);
10700 sprintf_vma (tmp2
, vma
+ size
);
10701 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10702 if (offset
+ sec_length
+ 1 > target_buf_size
)
10704 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
10706 Too many sections for read-only sections definition packet."));
10709 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10711 offset
+= sec_length
;
10715 putpkt (target_buf
);
10716 getpkt (&target_buf
, &target_buf_size
, 0);
10721 remote_trace_start (struct target_ops
*self
)
10723 putpkt ("QTStart");
10724 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10725 if (*target_buf
== '\0')
10726 error (_("Target does not support this command."));
10727 if (strcmp (target_buf
, "OK") != 0)
10728 error (_("Bogus reply from target: %s"), target_buf
);
10732 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
10734 /* Initialize it just to avoid a GCC false warning. */
10736 /* FIXME we need to get register block size some other way. */
10737 extern int trace_regblock_size
;
10738 volatile struct gdb_exception ex
;
10739 enum packet_result result
;
10741 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
10744 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10746 putpkt ("qTStatus");
10748 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10750 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10754 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10756 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10759 throw_exception (ex
);
10762 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10764 /* If the remote target doesn't do tracing, flag it. */
10765 if (result
== PACKET_UNKNOWN
)
10768 /* We're working with a live target. */
10769 ts
->filename
= NULL
;
10772 error (_("Bogus trace status reply from target: %s"), target_buf
);
10774 /* Function 'parse_trace_status' sets default value of each field of
10775 'ts' at first, so we don't have to do it here. */
10776 parse_trace_status (p
, ts
);
10778 return ts
->running
;
10782 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
10783 struct uploaded_tp
*utp
)
10785 struct remote_state
*rs
= get_remote_state ();
10787 struct bp_location
*loc
;
10788 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10789 size_t size
= get_remote_packet_size ();
10793 tp
->base
.hit_count
= 0;
10794 tp
->traceframe_usage
= 0;
10795 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10797 /* If the tracepoint was never downloaded, don't go asking for
10799 if (tp
->number_on_target
== 0)
10801 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10802 phex_nz (loc
->address
, 0));
10804 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10805 if (reply
&& *reply
)
10808 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10814 utp
->hit_count
= 0;
10815 utp
->traceframe_usage
= 0;
10816 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10817 phex_nz (utp
->addr
, 0));
10819 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10820 if (reply
&& *reply
)
10823 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10829 remote_trace_stop (struct target_ops
*self
)
10832 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10833 if (*target_buf
== '\0')
10834 error (_("Target does not support this command."));
10835 if (strcmp (target_buf
, "OK") != 0)
10836 error (_("Bogus reply from target: %s"), target_buf
);
10840 remote_trace_find (struct target_ops
*self
,
10841 enum trace_find_type type
, int num
,
10842 CORE_ADDR addr1
, CORE_ADDR addr2
,
10845 struct remote_state
*rs
= get_remote_state ();
10846 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10848 int target_frameno
= -1, target_tracept
= -1;
10850 /* Lookups other than by absolute frame number depend on the current
10851 trace selected, so make sure it is correct on the remote end
10853 if (type
!= tfind_number
)
10854 set_remote_traceframe ();
10857 strcpy (p
, "QTFrame:");
10858 p
= strchr (p
, '\0');
10862 xsnprintf (p
, endbuf
- p
, "%x", num
);
10865 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10868 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10871 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10872 phex_nz (addr2
, 0));
10874 case tfind_outside
:
10875 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10876 phex_nz (addr2
, 0));
10879 error (_("Unknown trace find type %d"), type
);
10883 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10884 if (*reply
== '\0')
10885 error (_("Target does not support this command."));
10887 while (reply
&& *reply
)
10892 target_frameno
= (int) strtol (p
, &reply
, 16);
10894 error (_("Unable to parse trace frame number"));
10895 /* Don't update our remote traceframe number cache on failure
10896 to select a remote traceframe. */
10897 if (target_frameno
== -1)
10902 target_tracept
= (int) strtol (p
, &reply
, 16);
10904 error (_("Unable to parse tracepoint number"));
10906 case 'O': /* "OK"? */
10907 if (reply
[1] == 'K' && reply
[2] == '\0')
10910 error (_("Bogus reply from target: %s"), reply
);
10913 error (_("Bogus reply from target: %s"), reply
);
10916 *tpp
= target_tracept
;
10918 rs
->remote_traceframe_number
= target_frameno
;
10919 return target_frameno
;
10923 remote_get_trace_state_variable_value (struct target_ops
*self
,
10924 int tsvnum
, LONGEST
*val
)
10926 struct remote_state
*rs
= get_remote_state ();
10930 set_remote_traceframe ();
10932 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10934 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10935 if (reply
&& *reply
)
10939 unpack_varlen_hex (reply
+ 1, &uval
);
10940 *val
= (LONGEST
) uval
;
10948 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
10950 struct remote_state
*rs
= get_remote_state ();
10954 strcpy (p
, "QTSave:");
10956 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10957 error (_("Remote file name too long for trace save packet"));
10958 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
10961 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10962 if (*reply
== '\0')
10963 error (_("Target does not support this command."));
10964 if (strcmp (reply
, "OK") != 0)
10965 error (_("Bogus reply from target: %s"), reply
);
10969 /* This is basically a memory transfer, but needs to be its own packet
10970 because we don't know how the target actually organizes its trace
10971 memory, plus we want to be able to ask for as much as possible, but
10972 not be unhappy if we don't get as much as we ask for. */
10975 remote_get_raw_trace_data (struct target_ops
*self
,
10976 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10978 struct remote_state
*rs
= get_remote_state ();
10984 strcpy (p
, "qTBuffer:");
10986 p
+= hexnumstr (p
, offset
);
10988 p
+= hexnumstr (p
, len
);
10992 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10993 if (reply
&& *reply
)
10995 /* 'l' by itself means we're at the end of the buffer and
10996 there is nothing more to get. */
11000 /* Convert the reply into binary. Limit the number of bytes to
11001 convert according to our passed-in buffer size, rather than
11002 what was returned in the packet; if the target is
11003 unexpectedly generous and gives us a bigger reply than we
11004 asked for, we don't want to crash. */
11005 rslt
= hex2bin (target_buf
, buf
, len
);
11009 /* Something went wrong, flag as an error. */
11014 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
11016 struct remote_state
*rs
= get_remote_state ();
11018 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
11022 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11024 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11025 if (*reply
== '\0')
11026 error (_("Target does not support this command."));
11027 if (strcmp (reply
, "OK") != 0)
11028 error (_("Bogus reply from target: %s"), reply
);
11031 warning (_("Target does not support disconnected tracing."));
11035 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11037 struct thread_info
*info
= find_thread_ptid (ptid
);
11039 if (info
&& info
->private)
11040 return info
->private->core
;
11045 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
11047 struct remote_state
*rs
= get_remote_state ();
11050 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11052 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11053 if (*reply
== '\0')
11054 error (_("Target does not support this command."));
11055 if (strcmp (reply
, "OK") != 0)
11056 error (_("Bogus reply from target: %s"), reply
);
11059 static struct traceframe_info
*
11060 remote_traceframe_info (struct target_ops
*self
)
11064 text
= target_read_stralloc (¤t_target
,
11065 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11068 struct traceframe_info
*info
;
11069 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11071 info
= parse_traceframe_info (text
);
11072 do_cleanups (back_to
);
11079 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11080 instruction on which a fast tracepoint may be placed. Returns -1
11081 if the packet is not supported, and 0 if the minimum instruction
11082 length is unknown. */
11085 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
11087 struct remote_state
*rs
= get_remote_state ();
11090 /* If we're not debugging a process yet, the IPA can't be
11092 if (!target_has_execution
)
11095 /* Make sure the remote is pointing at the right process. */
11096 set_general_process ();
11098 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11100 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11101 if (*reply
== '\0')
11105 ULONGEST min_insn_len
;
11107 unpack_varlen_hex (reply
, &min_insn_len
);
11109 return (int) min_insn_len
;
11114 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
11116 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
11118 struct remote_state
*rs
= get_remote_state ();
11119 char *buf
= rs
->buf
;
11120 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11121 enum packet_result result
;
11123 gdb_assert (val
>= 0 || val
== -1);
11124 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11125 /* Send -1 as literal "-1" to avoid host size dependency. */
11129 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11132 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11135 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11136 result
= packet_ok (rs
->buf
,
11137 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11139 if (result
!= PACKET_OK
)
11140 warning (_("Bogus reply from target: %s"), rs
->buf
);
11145 remote_set_trace_notes (struct target_ops
*self
,
11146 const char *user
, const char *notes
,
11147 const char *stop_notes
)
11149 struct remote_state
*rs
= get_remote_state ();
11151 char *buf
= rs
->buf
;
11152 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11155 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11158 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11159 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11165 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11166 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11172 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11173 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11177 /* Ensure the buffer is terminated. */
11181 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11182 if (*reply
== '\0')
11185 if (strcmp (reply
, "OK") != 0)
11186 error (_("Bogus reply from target: %s"), reply
);
11192 remote_use_agent (struct target_ops
*self
, int use
)
11194 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
11196 struct remote_state
*rs
= get_remote_state ();
11198 /* If the stub supports QAgent. */
11199 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11201 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11203 if (strcmp (rs
->buf
, "OK") == 0)
11214 remote_can_use_agent (struct target_ops
*self
)
11216 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
11219 struct btrace_target_info
11221 /* The ptid of the traced thread. */
11225 /* Check whether the target supports branch tracing. */
11228 remote_supports_btrace (struct target_ops
*self
)
11230 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
11232 if (packet_support (PACKET_Qbtrace_bts
) != PACKET_ENABLE
)
11234 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
11240 /* Enable branch tracing. */
11242 static struct btrace_target_info
*
11243 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
)
11245 struct btrace_target_info
*tinfo
= NULL
;
11246 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11247 struct remote_state
*rs
= get_remote_state ();
11248 char *buf
= rs
->buf
;
11249 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11251 if (packet_config_support (packet
) != PACKET_ENABLE
)
11252 error (_("Target does not support branch tracing."));
11254 set_general_thread (ptid
);
11256 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11258 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11260 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11262 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11263 error (_("Could not enable branch tracing for %s: %s"),
11264 target_pid_to_str (ptid
), rs
->buf
+ 2);
11266 error (_("Could not enable branch tracing for %s."),
11267 target_pid_to_str (ptid
));
11270 tinfo
= xzalloc (sizeof (*tinfo
));
11271 tinfo
->ptid
= ptid
;
11276 /* Disable branch tracing. */
11279 remote_disable_btrace (struct target_ops
*self
,
11280 struct btrace_target_info
*tinfo
)
11282 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11283 struct remote_state
*rs
= get_remote_state ();
11284 char *buf
= rs
->buf
;
11285 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11287 if (packet_config_support (packet
) != PACKET_ENABLE
)
11288 error (_("Target does not support branch tracing."));
11290 set_general_thread (tinfo
->ptid
);
11292 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11294 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11296 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11298 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11299 error (_("Could not disable branch tracing for %s: %s"),
11300 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11302 error (_("Could not disable branch tracing for %s."),
11303 target_pid_to_str (tinfo
->ptid
));
11309 /* Teardown branch tracing. */
11312 remote_teardown_btrace (struct target_ops
*self
,
11313 struct btrace_target_info
*tinfo
)
11315 /* We must not talk to the target during teardown. */
11319 /* Read the branch trace. */
11321 static enum btrace_error
11322 remote_read_btrace (struct target_ops
*self
,
11323 VEC (btrace_block_s
) **btrace
,
11324 struct btrace_target_info
*tinfo
,
11325 enum btrace_read_type type
)
11327 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11328 struct remote_state
*rs
= get_remote_state ();
11329 struct cleanup
*cleanup
;
11333 if (packet_config_support (packet
) != PACKET_ENABLE
)
11334 error (_("Target does not support branch tracing."));
11336 #if !defined(HAVE_LIBEXPAT)
11337 error (_("Cannot process branch tracing result. XML parsing not supported."));
11342 case BTRACE_READ_ALL
:
11345 case BTRACE_READ_NEW
:
11348 case BTRACE_READ_DELTA
:
11352 internal_error (__FILE__
, __LINE__
,
11353 _("Bad branch tracing read type: %u."),
11354 (unsigned int) type
);
11357 xml
= target_read_stralloc (¤t_target
,
11358 TARGET_OBJECT_BTRACE
, annex
);
11360 return BTRACE_ERR_UNKNOWN
;
11362 cleanup
= make_cleanup (xfree
, xml
);
11363 *btrace
= parse_xml_btrace (xml
);
11364 do_cleanups (cleanup
);
11366 return BTRACE_ERR_NONE
;
11370 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
11372 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
11376 /* Implementation of to_load. */
11379 remote_load (struct target_ops
*self
, char *name
, int from_tty
)
11381 generic_load (name
, from_tty
);
11385 init_remote_ops (void)
11387 remote_ops
.to_shortname
= "remote";
11388 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11389 remote_ops
.to_doc
=
11390 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11391 Specify the serial device it is connected to\n\
11392 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11393 remote_ops
.to_open
= remote_open
;
11394 remote_ops
.to_close
= remote_close
;
11395 remote_ops
.to_detach
= remote_detach
;
11396 remote_ops
.to_disconnect
= remote_disconnect
;
11397 remote_ops
.to_resume
= remote_resume
;
11398 remote_ops
.to_wait
= remote_wait
;
11399 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11400 remote_ops
.to_store_registers
= remote_store_registers
;
11401 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11402 remote_ops
.to_files_info
= remote_files_info
;
11403 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11404 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11405 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11406 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11407 remote_ops
.to_watchpoint_addr_within_range
=
11408 remote_watchpoint_addr_within_range
;
11409 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11410 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11411 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11412 remote_ops
.to_region_ok_for_hw_watchpoint
11413 = remote_region_ok_for_hw_watchpoint
;
11414 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11415 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11416 remote_ops
.to_kill
= remote_kill
;
11417 remote_ops
.to_load
= remote_load
;
11418 remote_ops
.to_mourn_inferior
= remote_mourn
;
11419 remote_ops
.to_pass_signals
= remote_pass_signals
;
11420 remote_ops
.to_program_signals
= remote_program_signals
;
11421 remote_ops
.to_thread_alive
= remote_thread_alive
;
11422 remote_ops
.to_find_new_threads
= remote_threads_info
;
11423 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11424 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11425 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11426 remote_ops
.to_stop
= remote_stop
;
11427 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11428 remote_ops
.to_rcmd
= remote_rcmd
;
11429 remote_ops
.to_log_command
= serial_log_command
;
11430 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11431 remote_ops
.to_stratum
= process_stratum
;
11432 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11433 remote_ops
.to_has_memory
= default_child_has_memory
;
11434 remote_ops
.to_has_stack
= default_child_has_stack
;
11435 remote_ops
.to_has_registers
= default_child_has_registers
;
11436 remote_ops
.to_has_execution
= default_child_has_execution
;
11437 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11438 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11439 remote_ops
.to_magic
= OPS_MAGIC
;
11440 remote_ops
.to_memory_map
= remote_memory_map
;
11441 remote_ops
.to_flash_erase
= remote_flash_erase
;
11442 remote_ops
.to_flash_done
= remote_flash_done
;
11443 remote_ops
.to_read_description
= remote_read_description
;
11444 remote_ops
.to_search_memory
= remote_search_memory
;
11445 remote_ops
.to_can_async_p
= remote_can_async_p
;
11446 remote_ops
.to_is_async_p
= remote_is_async_p
;
11447 remote_ops
.to_async
= remote_async
;
11448 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11449 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11450 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11451 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11452 remote_ops
.to_supports_disable_randomization
11453 = remote_supports_disable_randomization
;
11454 remote_ops
.to_fileio_open
= remote_hostio_open
;
11455 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11456 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11457 remote_ops
.to_fileio_close
= remote_hostio_close
;
11458 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11459 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11460 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11461 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11462 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11463 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11464 remote_ops
.to_trace_init
= remote_trace_init
;
11465 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11466 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11467 remote_ops
.to_download_trace_state_variable
11468 = remote_download_trace_state_variable
;
11469 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11470 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11471 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11472 remote_ops
.to_trace_start
= remote_trace_start
;
11473 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11474 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11475 remote_ops
.to_trace_stop
= remote_trace_stop
;
11476 remote_ops
.to_trace_find
= remote_trace_find
;
11477 remote_ops
.to_get_trace_state_variable_value
11478 = remote_get_trace_state_variable_value
;
11479 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11480 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11481 remote_ops
.to_upload_trace_state_variables
11482 = remote_upload_trace_state_variables
;
11483 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11484 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11485 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11486 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11487 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11488 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11489 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11490 remote_ops
.to_verify_memory
= remote_verify_memory
;
11491 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11492 remote_ops
.to_set_permissions
= remote_set_permissions
;
11493 remote_ops
.to_static_tracepoint_marker_at
11494 = remote_static_tracepoint_marker_at
;
11495 remote_ops
.to_static_tracepoint_markers_by_strid
11496 = remote_static_tracepoint_markers_by_strid
;
11497 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11498 remote_ops
.to_use_agent
= remote_use_agent
;
11499 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11500 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11501 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11502 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11503 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11504 remote_ops
.to_read_btrace
= remote_read_btrace
;
11505 remote_ops
.to_augmented_libraries_svr4_read
=
11506 remote_augmented_libraries_svr4_read
;
11509 /* Set up the extended remote vector by making a copy of the standard
11510 remote vector and adding to it. */
11513 init_extended_remote_ops (void)
11515 extended_remote_ops
= remote_ops
;
11517 extended_remote_ops
.to_shortname
= "extended-remote";
11518 extended_remote_ops
.to_longname
=
11519 "Extended remote serial target in gdb-specific protocol";
11520 extended_remote_ops
.to_doc
=
11521 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11522 Specify the serial device it is connected to (e.g. /dev/ttya).";
11523 extended_remote_ops
.to_open
= extended_remote_open
;
11524 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11525 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11526 extended_remote_ops
.to_detach
= extended_remote_detach
;
11527 extended_remote_ops
.to_attach
= extended_remote_attach
;
11528 extended_remote_ops
.to_kill
= extended_remote_kill
;
11529 extended_remote_ops
.to_supports_disable_randomization
11530 = extended_remote_supports_disable_randomization
;
11534 remote_can_async_p (struct target_ops
*ops
)
11536 struct remote_state
*rs
= get_remote_state ();
11538 if (!target_async_permitted
)
11539 /* We only enable async when the user specifically asks for it. */
11542 /* We're async whenever the serial device is. */
11543 return serial_can_async_p (rs
->remote_desc
);
11547 remote_is_async_p (struct target_ops
*ops
)
11549 struct remote_state
*rs
= get_remote_state ();
11551 if (!target_async_permitted
)
11552 /* We only enable async when the user specifically asks for it. */
11555 /* We're async whenever the serial device is. */
11556 return serial_is_async_p (rs
->remote_desc
);
11559 /* Pass the SERIAL event on and up to the client. One day this code
11560 will be able to delay notifying the client of an event until the
11561 point where an entire packet has been received. */
11563 static serial_event_ftype remote_async_serial_handler
;
11566 remote_async_serial_handler (struct serial
*scb
, void *context
)
11568 struct remote_state
*rs
= context
;
11570 /* Don't propogate error information up to the client. Instead let
11571 the client find out about the error by querying the target. */
11572 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11576 remote_async_inferior_event_handler (gdb_client_data data
)
11578 inferior_event_handler (INF_REG_EVENT
, NULL
);
11582 remote_async (struct target_ops
*ops
,
11583 void (*callback
) (enum inferior_event_type event_type
,
11587 struct remote_state
*rs
= get_remote_state ();
11589 if (callback
!= NULL
)
11591 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11592 rs
->async_client_callback
= callback
;
11593 rs
->async_client_context
= context
;
11596 serial_async (rs
->remote_desc
, NULL
, NULL
);
11600 set_remote_cmd (char *args
, int from_tty
)
11602 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11606 show_remote_cmd (char *args
, int from_tty
)
11608 /* We can't just use cmd_show_list here, because we want to skip
11609 the redundant "show remote Z-packet" and the legacy aliases. */
11610 struct cleanup
*showlist_chain
;
11611 struct cmd_list_element
*list
= remote_show_cmdlist
;
11612 struct ui_out
*uiout
= current_uiout
;
11614 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11615 for (; list
!= NULL
; list
= list
->next
)
11616 if (strcmp (list
->name
, "Z-packet") == 0)
11618 else if (list
->type
== not_set_cmd
)
11619 /* Alias commands are exactly like the original, except they
11620 don't have the normal type. */
11624 struct cleanup
*option_chain
11625 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11627 ui_out_field_string (uiout
, "name", list
->name
);
11628 ui_out_text (uiout
, ": ");
11629 if (list
->type
== show_cmd
)
11630 do_show_command ((char *) NULL
, from_tty
, list
);
11632 cmd_func (list
, NULL
, from_tty
);
11633 /* Close the tuple. */
11634 do_cleanups (option_chain
);
11637 /* Close the tuple. */
11638 do_cleanups (showlist_chain
);
11642 /* Function to be called whenever a new objfile (shlib) is detected. */
11644 remote_new_objfile (struct objfile
*objfile
)
11646 struct remote_state
*rs
= get_remote_state ();
11648 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11649 remote_check_symbols ();
11652 /* Pull all the tracepoints defined on the target and create local
11653 data structures representing them. We don't want to create real
11654 tracepoints yet, we don't want to mess up the user's existing
11658 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
11660 struct remote_state
*rs
= get_remote_state ();
11663 /* Ask for a first packet of tracepoint definition. */
11665 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11667 while (*p
&& *p
!= 'l')
11669 parse_tracepoint_definition (p
, utpp
);
11670 /* Ask for another packet of tracepoint definition. */
11672 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11679 remote_upload_trace_state_variables (struct target_ops
*self
,
11680 struct uploaded_tsv
**utsvp
)
11682 struct remote_state
*rs
= get_remote_state ();
11685 /* Ask for a first packet of variable definition. */
11687 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11689 while (*p
&& *p
!= 'l')
11691 parse_tsv_definition (p
, utsvp
);
11692 /* Ask for another packet of variable definition. */
11694 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11700 /* The "set/show range-stepping" show hook. */
11703 show_range_stepping (struct ui_file
*file
, int from_tty
,
11704 struct cmd_list_element
*c
,
11707 fprintf_filtered (file
,
11708 _("Debugger's willingness to use range stepping "
11709 "is %s.\n"), value
);
11712 /* The "set/show range-stepping" set hook. */
11715 set_range_stepping (char *ignore_args
, int from_tty
,
11716 struct cmd_list_element
*c
)
11718 struct remote_state
*rs
= get_remote_state ();
11720 /* Whene enabling, check whether range stepping is actually
11721 supported by the target, and warn if not. */
11722 if (use_range_stepping
)
11724 if (rs
->remote_desc
!= NULL
)
11726 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
11727 remote_vcont_probe (rs
);
11729 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
11730 && rs
->supports_vCont
.r
)
11734 warning (_("Range stepping is not supported by the current target"));
11739 _initialize_remote (void)
11741 struct remote_state
*rs
;
11742 struct cmd_list_element
*cmd
;
11743 const char *cmd_name
;
11745 /* architecture specific data */
11746 remote_gdbarch_data_handle
=
11747 gdbarch_data_register_post_init (init_remote_state
);
11748 remote_g_packet_data_handle
=
11749 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11751 /* Initialize the per-target state. At the moment there is only one
11752 of these, not one per target. Only one target is active at a
11754 remote_state
= new_remote_state ();
11756 init_remote_ops ();
11757 add_target (&remote_ops
);
11759 init_extended_remote_ops ();
11760 add_target (&extended_remote_ops
);
11762 /* Hook into new objfile notification. */
11763 observer_attach_new_objfile (remote_new_objfile
);
11764 /* We're no longer interested in notification events of an inferior
11766 observer_attach_inferior_exit (discard_pending_stop_replies
);
11768 /* Set up signal handlers. */
11769 async_sigint_remote_token
=
11770 create_async_signal_handler (async_remote_interrupt
, NULL
);
11771 async_sigint_remote_twice_token
=
11772 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11775 init_remote_threadtests ();
11778 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11779 /* set/show remote ... */
11781 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11782 Remote protocol specific variables\n\
11783 Configure various remote-protocol specific variables such as\n\
11784 the packets being used"),
11785 &remote_set_cmdlist
, "set remote ",
11786 0 /* allow-unknown */, &setlist
);
11787 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11788 Remote protocol specific variables\n\
11789 Configure various remote-protocol specific variables such as\n\
11790 the packets being used"),
11791 &remote_show_cmdlist
, "show remote ",
11792 0 /* allow-unknown */, &showlist
);
11794 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11795 Compare section data on target to the exec file.\n\
11796 Argument is a single section name (default: all loaded sections).\n\
11797 To compare only read-only loaded sections, specify the -r option."),
11800 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11801 Send an arbitrary packet to a remote target.\n\
11802 maintenance packet TEXT\n\
11803 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11804 this command sends the string TEXT to the inferior, and displays the\n\
11805 response packet. GDB supplies the initial `$' character, and the\n\
11806 terminating `#' character and checksum."),
11809 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11810 Set whether to send break if interrupted."), _("\
11811 Show whether to send break if interrupted."), _("\
11812 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11813 set_remotebreak
, show_remotebreak
,
11814 &setlist
, &showlist
);
11815 cmd_name
= "remotebreak";
11816 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11817 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11818 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11819 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11820 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11822 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11823 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11825 Set interrupt sequence to remote target."), _("\
11826 Show interrupt sequence to remote target."), _("\
11827 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11828 NULL
, show_interrupt_sequence
,
11829 &remote_set_cmdlist
,
11830 &remote_show_cmdlist
);
11832 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11833 &interrupt_on_connect
, _("\
11834 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11835 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11836 If set, interrupt sequence is sent to remote target."),
11838 &remote_set_cmdlist
, &remote_show_cmdlist
);
11840 /* Install commands for configuring memory read/write packets. */
11842 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11843 Set the maximum number of bytes per memory write packet (deprecated)."),
11845 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11846 Show the maximum number of bytes per memory write packet (deprecated)."),
11848 add_cmd ("memory-write-packet-size", no_class
,
11849 set_memory_write_packet_size
, _("\
11850 Set the maximum number of bytes per memory-write packet.\n\
11851 Specify the number of bytes in a packet or 0 (zero) for the\n\
11852 default packet size. The actual limit is further reduced\n\
11853 dependent on the target. Specify ``fixed'' to disable the\n\
11854 further restriction and ``limit'' to enable that restriction."),
11855 &remote_set_cmdlist
);
11856 add_cmd ("memory-read-packet-size", no_class
,
11857 set_memory_read_packet_size
, _("\
11858 Set the maximum number of bytes per memory-read packet.\n\
11859 Specify the number of bytes in a packet or 0 (zero) for the\n\
11860 default packet size. The actual limit is further reduced\n\
11861 dependent on the target. Specify ``fixed'' to disable the\n\
11862 further restriction and ``limit'' to enable that restriction."),
11863 &remote_set_cmdlist
);
11864 add_cmd ("memory-write-packet-size", no_class
,
11865 show_memory_write_packet_size
,
11866 _("Show the maximum number of bytes per memory-write packet."),
11867 &remote_show_cmdlist
);
11868 add_cmd ("memory-read-packet-size", no_class
,
11869 show_memory_read_packet_size
,
11870 _("Show the maximum number of bytes per memory-read packet."),
11871 &remote_show_cmdlist
);
11873 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11874 &remote_hw_watchpoint_limit
, _("\
11875 Set the maximum number of target hardware watchpoints."), _("\
11876 Show the maximum number of target hardware watchpoints."), _("\
11877 Specify a negative limit for unlimited."),
11878 NULL
, NULL
, /* FIXME: i18n: The maximum
11879 number of target hardware
11880 watchpoints is %s. */
11881 &remote_set_cmdlist
, &remote_show_cmdlist
);
11882 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11883 &remote_hw_watchpoint_length_limit
, _("\
11884 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11885 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11886 Specify a negative limit for unlimited."),
11887 NULL
, NULL
, /* FIXME: i18n: The maximum
11888 length (in bytes) of a target
11889 hardware watchpoint is %s. */
11890 &remote_set_cmdlist
, &remote_show_cmdlist
);
11891 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11892 &remote_hw_breakpoint_limit
, _("\
11893 Set the maximum number of target hardware breakpoints."), _("\
11894 Show the maximum number of target hardware breakpoints."), _("\
11895 Specify a negative limit for unlimited."),
11896 NULL
, NULL
, /* FIXME: i18n: The maximum
11897 number of target hardware
11898 breakpoints is %s. */
11899 &remote_set_cmdlist
, &remote_show_cmdlist
);
11901 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11902 &remote_address_size
, _("\
11903 Set the maximum size of the address (in bits) in a memory packet."), _("\
11904 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11906 NULL
, /* FIXME: i18n: */
11907 &setlist
, &showlist
);
11909 init_all_packet_configs ();
11911 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11912 "X", "binary-download", 1);
11914 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11915 "vCont", "verbose-resume", 0);
11917 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11918 "QPassSignals", "pass-signals", 0);
11920 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11921 "QProgramSignals", "program-signals", 0);
11923 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11924 "qSymbol", "symbol-lookup", 0);
11926 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11927 "P", "set-register", 1);
11929 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11930 "p", "fetch-register", 1);
11932 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11933 "Z0", "software-breakpoint", 0);
11935 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11936 "Z1", "hardware-breakpoint", 0);
11938 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11939 "Z2", "write-watchpoint", 0);
11941 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11942 "Z3", "read-watchpoint", 0);
11944 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11945 "Z4", "access-watchpoint", 0);
11947 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11948 "qXfer:auxv:read", "read-aux-vector", 0);
11950 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11951 "qXfer:features:read", "target-features", 0);
11953 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11954 "qXfer:libraries:read", "library-info", 0);
11956 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11957 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11959 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11960 "qXfer:memory-map:read", "memory-map", 0);
11962 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11963 "qXfer:spu:read", "read-spu-object", 0);
11965 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11966 "qXfer:spu:write", "write-spu-object", 0);
11968 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11969 "qXfer:osdata:read", "osdata", 0);
11971 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11972 "qXfer:threads:read", "threads", 0);
11974 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11975 "qXfer:siginfo:read", "read-siginfo-object", 0);
11977 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11978 "qXfer:siginfo:write", "write-siginfo-object", 0);
11980 add_packet_config_cmd
11981 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11982 "qXfer:traceframe-info:read", "traceframe-info", 0);
11984 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11985 "qXfer:uib:read", "unwind-info-block", 0);
11987 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11988 "qGetTLSAddr", "get-thread-local-storage-address",
11991 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11992 "qGetTIBAddr", "get-thread-information-block-address",
11995 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11996 "bc", "reverse-continue", 0);
11998 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11999 "bs", "reverse-step", 0);
12001 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12002 "qSupported", "supported-packets", 0);
12004 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12005 "qSearch:memory", "search-memory", 0);
12007 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12008 "qTStatus", "trace-status", 0);
12010 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12011 "vFile:open", "hostio-open", 0);
12013 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12014 "vFile:pread", "hostio-pread", 0);
12016 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12017 "vFile:pwrite", "hostio-pwrite", 0);
12019 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12020 "vFile:close", "hostio-close", 0);
12022 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12023 "vFile:unlink", "hostio-unlink", 0);
12025 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12026 "vFile:readlink", "hostio-readlink", 0);
12028 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12029 "vAttach", "attach", 0);
12031 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12034 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12035 "QStartNoAckMode", "noack", 0);
12037 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12038 "vKill", "kill", 0);
12040 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12041 "qAttached", "query-attached", 0);
12043 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12044 "ConditionalTracepoints",
12045 "conditional-tracepoints", 0);
12047 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12048 "ConditionalBreakpoints",
12049 "conditional-breakpoints", 0);
12051 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12052 "BreakpointCommands",
12053 "breakpoint-commands", 0);
12055 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12056 "FastTracepoints", "fast-tracepoints", 0);
12058 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12059 "TracepointSource", "TracepointSource", 0);
12061 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12062 "QAllow", "allow", 0);
12064 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12065 "StaticTracepoints", "static-tracepoints", 0);
12067 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12068 "InstallInTrace", "install-in-trace", 0);
12070 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12071 "qXfer:statictrace:read", "read-sdata-object", 0);
12073 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12074 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12076 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12077 "QDisableRandomization", "disable-randomization", 0);
12079 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12080 "QAgent", "agent", 0);
12082 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12083 "QTBuffer:size", "trace-buffer-size", 0);
12085 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12086 "Qbtrace:off", "disable-btrace", 0);
12088 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12089 "Qbtrace:bts", "enable-btrace", 0);
12091 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12092 "qXfer:btrace", "read-btrace", 0);
12094 /* Assert that we've registered commands for all packet configs. */
12098 for (i
= 0; i
< PACKET_MAX
; i
++)
12100 /* Ideally all configs would have a command associated. Some
12101 still don't though. */
12106 case PACKET_QNonStop
:
12107 case PACKET_multiprocess_feature
:
12108 case PACKET_EnableDisableTracepoints_feature
:
12109 case PACKET_tracenz_feature
:
12110 case PACKET_DisconnectedTracing_feature
:
12111 case PACKET_augmented_libraries_svr4_read_feature
:
12113 /* Additions to this list need to be well justified:
12114 pre-existing packets are OK; new packets are not. */
12122 /* This catches both forgetting to add a config command, and
12123 forgetting to remove a packet from the exception list. */
12124 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
12128 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12129 Z sub-packet has its own set and show commands, but users may
12130 have sets to this variable in their .gdbinit files (or in their
12132 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12133 &remote_Z_packet_detect
, _("\
12134 Set use of remote protocol `Z' packets"), _("\
12135 Show use of remote protocol `Z' packets "), _("\
12136 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12138 set_remote_protocol_Z_packet_cmd
,
12139 show_remote_protocol_Z_packet_cmd
,
12140 /* FIXME: i18n: Use of remote protocol
12141 `Z' packets is %s. */
12142 &remote_set_cmdlist
, &remote_show_cmdlist
);
12144 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12145 Manipulate files on the remote system\n\
12146 Transfer files to and from the remote target system."),
12147 &remote_cmdlist
, "remote ",
12148 0 /* allow-unknown */, &cmdlist
);
12150 add_cmd ("put", class_files
, remote_put_command
,
12151 _("Copy a local file to the remote system."),
12154 add_cmd ("get", class_files
, remote_get_command
,
12155 _("Copy a remote file to the local system."),
12158 add_cmd ("delete", class_files
, remote_delete_command
,
12159 _("Delete a remote file."),
12162 remote_exec_file
= xstrdup ("");
12163 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12164 &remote_exec_file
, _("\
12165 Set the remote pathname for \"run\""), _("\
12166 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12167 &remote_set_cmdlist
, &remote_show_cmdlist
);
12169 add_setshow_boolean_cmd ("range-stepping", class_run
,
12170 &use_range_stepping
, _("\
12171 Enable or disable range stepping."), _("\
12172 Show whether target-assisted range stepping is enabled."), _("\
12173 If on, and the target supports it, when stepping a source line, GDB\n\
12174 tells the target to step the corresponding range of addresses itself instead\n\
12175 of issuing multiple single-steps. This speeds up source level\n\
12176 stepping. If off, GDB always issues single-steps, even if range\n\
12177 stepping is supported by the target. The default is on."),
12178 set_range_stepping
,
12179 show_range_stepping
,
12183 /* Eventually initialize fileio. See fileio.c */
12184 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12186 /* Take advantage of the fact that the TID field is not used, to tag
12187 special ptids with it set to != 0. */
12188 magic_null_ptid
= ptid_build (42000, -1, 1);
12189 not_sent_ptid
= ptid_build (42000, -2, 1);
12190 any_thread_ptid
= ptid_build (42000, 0, 1);
12192 target_buf_size
= 2048;
12193 target_buf
= xmalloc (target_buf_size
);