1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
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 cleanup_sigint_signal_handler (void *dummy
);
92 static void initialize_sigint_signal_handler (void);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
95 int forever
, int *is_notif
);
97 static void handle_remote_sigint (int);
98 static void handle_remote_sigint_twice (int);
99 static void async_remote_interrupt (gdb_client_data
);
100 void async_remote_interrupt_twice (gdb_client_data
);
102 static void remote_files_info (struct target_ops
*ignore
);
104 static void remote_prepare_to_store (struct regcache
*regcache
);
106 static void remote_open (char *name
, int from_tty
);
108 static void extended_remote_open (char *name
, int from_tty
);
110 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
112 static void remote_close (void);
114 static void remote_mourn (struct target_ops
*ops
);
116 static void extended_remote_restart (void);
118 static void extended_remote_mourn (struct target_ops
*);
120 static void remote_mourn_1 (struct target_ops
*);
122 static void remote_send (char **buf
, long *sizeof_buf_p
);
124 static int readchar (int timeout
);
126 static void remote_serial_write (const char *str
, int len
);
128 static void remote_kill (struct target_ops
*ops
);
130 static int tohex (int nib
);
132 static int remote_can_async_p (void);
134 static int remote_is_async_p (void);
136 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
137 void *context
), void *context
);
139 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
141 static void remote_interrupt (int signo
);
143 static void remote_interrupt_twice (int signo
);
145 static void interrupt_query (void);
147 static void set_general_thread (struct ptid ptid
);
148 static void set_continue_thread (struct ptid ptid
);
150 static void get_offsets (void);
152 static void skip_frame (void);
154 static long read_frame (char **buf_p
, long *sizeof_buf
);
156 static int hexnumlen (ULONGEST num
);
158 static void init_remote_ops (void);
160 static void init_extended_remote_ops (void);
162 static void remote_stop (ptid_t
);
164 static int ishex (int ch
, int *val
);
166 static int stubhex (int ch
);
168 static int hexnumstr (char *, ULONGEST
);
170 static int hexnumnstr (char *, ULONGEST
, int);
172 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
174 static void print_packet (char *);
176 static void compare_sections_command (char *, int);
178 static void packet_command (char *, int);
180 static int stub_unpack_int (char *buff
, int fieldlength
);
182 static ptid_t
remote_current_thread (ptid_t oldptid
);
184 static void remote_find_new_threads (void);
186 static void record_currthread (ptid_t currthread
);
188 static int fromhex (int a
);
190 static int putpkt_binary (char *buf
, int cnt
);
192 static void check_binary_download (CORE_ADDR addr
);
194 struct packet_config
;
196 static void show_packet_config_cmd (struct packet_config
*config
);
198 static void update_packet_config (struct packet_config
*config
);
200 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
201 struct cmd_list_element
*c
);
203 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
205 struct cmd_list_element
*c
,
208 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
209 static ptid_t
read_ptid (char *buf
, char **obuf
);
211 static void remote_set_permissions (void);
214 static int remote_get_trace_status (struct trace_status
*ts
);
216 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
218 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
220 static void remote_query_supported (void);
222 static void remote_check_symbols (void);
224 void _initialize_remote (void);
227 static void stop_reply_xfree (struct stop_reply
*);
228 static void remote_parse_stop_reply (char *, struct stop_reply
*);
229 static void push_stop_reply (struct stop_reply
*);
230 static void discard_pending_stop_replies (struct inferior
*);
231 static int peek_stop_reply (ptid_t ptid
);
233 static void remote_async_inferior_event_handler (gdb_client_data
);
235 static void remote_terminal_ours (void);
237 static int remote_read_description_p (struct target_ops
*target
);
239 static void remote_console_output (char *msg
);
241 static int remote_supports_cond_breakpoints (void);
243 static int remote_can_run_breakpoint_commands (void);
247 static struct cmd_list_element
*remote_cmdlist
;
249 /* For "set remote" and "show remote". */
251 static struct cmd_list_element
*remote_set_cmdlist
;
252 static struct cmd_list_element
*remote_show_cmdlist
;
254 /* Stub vCont actions support.
256 Each field is a boolean flag indicating whether the stub reports
257 support for the corresponding action. */
259 struct vCont_action_support
268 /* Controls whether GDB is willing to use range stepping. */
270 static int use_range_stepping
= 1;
272 /* Description of the remote protocol state for the currently
273 connected target. This is per-target state, and independent of the
274 selected architecture. */
278 /* A buffer to use for incoming packets, and its current size. The
279 buffer is grown dynamically for larger incoming packets.
280 Outgoing packets may also be constructed in this buffer.
281 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
282 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
287 /* True if we're going through initial connection setup (finding out
288 about the remote side's threads, relocating symbols, etc.). */
291 /* If we negotiated packet size explicitly (and thus can bypass
292 heuristics for the largest packet size that will not overflow
293 a buffer in the stub), this will be set to that packet size.
294 Otherwise zero, meaning to use the guessed size. */
295 long explicit_packet_size
;
297 /* remote_wait is normally called when the target is running and
298 waits for a stop reply packet. But sometimes we need to call it
299 when the target is already stopped. We can send a "?" packet
300 and have remote_wait read the response. Or, if we already have
301 the response, we can stash it in BUF and tell remote_wait to
302 skip calling getpkt. This flag is set when BUF contains a
303 stop reply packet and the target is not waiting. */
304 int cached_wait_status
;
306 /* True, if in no ack mode. That is, neither GDB nor the stub will
307 expect acks from each other. The connection is assumed to be
311 /* True if we're connected in extended remote mode. */
314 /* True if the stub reported support for multi-process
316 int multi_process_aware
;
318 /* True if we resumed the target and we're waiting for the target to
319 stop. In the mean time, we can't start another command/query.
320 The remote server wouldn't be ready to process it, so we'd
321 timeout waiting for a reply that would never come and eventually
322 we'd close the connection. This can happen in asynchronous mode
323 because we allow GDB commands while the target is running. */
324 int waiting_for_stop_reply
;
326 /* True if the stub reports support for non-stop mode. */
329 /* The status of the stub support for the various vCont actions. */
330 struct vCont_action_support supports_vCont
;
332 /* True if the stub reports support for conditional tracepoints. */
333 int cond_tracepoints
;
335 /* True if the stub reports support for target-side breakpoint
337 int cond_breakpoints
;
339 /* True if the stub reports support for target-side breakpoint
341 int breakpoint_commands
;
343 /* True if the stub reports support for fast tracepoints. */
344 int fast_tracepoints
;
346 /* True if the stub reports support for static tracepoints. */
347 int static_tracepoints
;
349 /* True if the stub reports support for installing tracepoint while
351 int install_in_trace
;
353 /* True if the stub can continue running a trace while GDB is
355 int disconnected_tracing
;
357 /* True if the stub reports support for enabling and disabling
358 tracepoints while a trace experiment is running. */
359 int enable_disable_tracepoints
;
361 /* True if the stub can collect strings using tracenz bytecode. */
364 /* True if the stub supports qXfer:libraries-svr4:read with a
366 int augmented_libraries_svr4_read
;
368 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
369 responded to that. */
373 /* Private data that we'll store in (struct thread_info)->private. */
374 struct private_thread_info
381 free_private_thread_info (struct private_thread_info
*info
)
387 /* Returns true if the multi-process extensions are in effect. */
389 remote_multi_process_p (struct remote_state
*rs
)
391 return rs
->multi_process_aware
;
394 /* This data could be associated with a target, but we do not always
395 have access to the current target when we need it, so for now it is
396 static. This will be fine for as long as only one target is in use
398 static struct remote_state remote_state
;
400 static struct remote_state
*
401 get_remote_state_raw (void)
403 return &remote_state
;
406 /* Description of the remote protocol for a given architecture. */
410 long offset
; /* Offset into G packet. */
411 long regnum
; /* GDB's internal register number. */
412 LONGEST pnum
; /* Remote protocol register number. */
413 int in_g_packet
; /* Always part of G packet. */
414 /* long size in bytes; == register_size (target_gdbarch (), regnum);
416 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
420 struct remote_arch_state
422 /* Description of the remote protocol registers. */
423 long sizeof_g_packet
;
425 /* Description of the remote protocol registers indexed by REGNUM
426 (making an array gdbarch_num_regs in size). */
427 struct packet_reg
*regs
;
429 /* This is the size (in chars) of the first response to the ``g''
430 packet. It is used as a heuristic when determining the maximum
431 size of memory-read and memory-write packets. A target will
432 typically only reserve a buffer large enough to hold the ``g''
433 packet. The size does not include packet overhead (headers and
435 long actual_register_packet_size
;
437 /* This is the maximum size (in chars) of a non read/write packet.
438 It is also used as a cap on the size of read/write packets. */
439 long remote_packet_size
;
442 long sizeof_pkt
= 2000;
444 /* Utility: generate error from an incoming stub packet. */
446 trace_error (char *buf
)
449 return; /* not an error msg */
452 case '1': /* malformed packet error */
453 if (*++buf
== '0') /* general case: */
454 error (_("remote.c: error in outgoing packet."));
456 error (_("remote.c: error in outgoing packet at field #%ld."),
457 strtol (buf
, NULL
, 16));
459 error (_("Target returns error code '%s'."), buf
);
463 /* Utility: wait for reply from stub, while accepting "O" packets. */
465 remote_get_noisy_reply (char **buf_p
,
468 do /* Loop on reply from remote stub. */
472 QUIT
; /* Allow user to bail out with ^C. */
473 getpkt (buf_p
, sizeof_buf
, 0);
477 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
480 CORE_ADDR from
, to
, org_to
;
482 int adjusted_size
= 0;
483 volatile struct gdb_exception ex
;
485 p
= buf
+ strlen ("qRelocInsn:");
486 pp
= unpack_varlen_hex (p
, &ul
);
488 error (_("invalid qRelocInsn packet: %s"), buf
);
492 unpack_varlen_hex (p
, &ul
);
497 TRY_CATCH (ex
, RETURN_MASK_ALL
)
499 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
503 adjusted_size
= to
- org_to
;
505 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
508 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
510 /* Propagate memory errors silently back to the target.
511 The stub may have limited the range of addresses we
512 can write to, for example. */
517 /* Something unexpectedly bad happened. Be verbose so
518 we can tell what, and propagate the error back to the
519 stub, so it doesn't get stuck waiting for a
521 exception_fprintf (gdb_stderr
, ex
,
522 _("warning: relocating instruction: "));
526 else if (buf
[0] == 'O' && buf
[1] != 'K')
527 remote_console_output (buf
+ 1); /* 'O' message from stub */
529 return buf
; /* Here's the actual reply. */
534 /* Handle for retreving the remote protocol data from gdbarch. */
535 static struct gdbarch_data
*remote_gdbarch_data_handle
;
537 static struct remote_arch_state
*
538 get_remote_arch_state (void)
540 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
543 /* Fetch the global remote target state. */
545 static struct remote_state
*
546 get_remote_state (void)
548 /* Make sure that the remote architecture state has been
549 initialized, because doing so might reallocate rs->buf. Any
550 function which calls getpkt also needs to be mindful of changes
551 to rs->buf, but this call limits the number of places which run
553 get_remote_arch_state ();
555 return get_remote_state_raw ();
559 compare_pnums (const void *lhs_
, const void *rhs_
)
561 const struct packet_reg
* const *lhs
= lhs_
;
562 const struct packet_reg
* const *rhs
= rhs_
;
564 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
566 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
573 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
575 int regnum
, num_remote_regs
, offset
;
576 struct packet_reg
**remote_regs
;
578 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
580 struct packet_reg
*r
= ®s
[regnum
];
582 if (register_size (gdbarch
, regnum
) == 0)
583 /* Do not try to fetch zero-sized (placeholder) registers. */
586 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
591 /* Define the g/G packet format as the contents of each register
592 with a remote protocol number, in order of ascending protocol
595 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
596 * sizeof (struct packet_reg
*));
597 for (num_remote_regs
= 0, regnum
= 0;
598 regnum
< gdbarch_num_regs (gdbarch
);
600 if (regs
[regnum
].pnum
!= -1)
601 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
603 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
606 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
608 remote_regs
[regnum
]->in_g_packet
= 1;
609 remote_regs
[regnum
]->offset
= offset
;
610 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
616 /* Given the architecture described by GDBARCH, return the remote
617 protocol register's number and the register's offset in the g/G
618 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
619 If the target does not have a mapping for REGNUM, return false,
620 otherwise, return true. */
623 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
624 int *pnum
, int *poffset
)
627 struct packet_reg
*regs
;
628 struct cleanup
*old_chain
;
630 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
632 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
633 old_chain
= make_cleanup (xfree
, regs
);
635 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
637 *pnum
= regs
[regnum
].pnum
;
638 *poffset
= regs
[regnum
].offset
;
640 do_cleanups (old_chain
);
646 init_remote_state (struct gdbarch
*gdbarch
)
648 struct remote_state
*rs
= get_remote_state_raw ();
649 struct remote_arch_state
*rsa
;
651 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
653 /* Use the architecture to build a regnum<->pnum table, which will be
654 1:1 unless a feature set specifies otherwise. */
655 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
656 gdbarch_num_regs (gdbarch
),
659 /* Record the maximum possible size of the g packet - it may turn out
661 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
663 /* Default maximum number of characters in a packet body. Many
664 remote stubs have a hardwired buffer size of 400 bytes
665 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
666 as the maximum packet-size to ensure that the packet and an extra
667 NUL character can always fit in the buffer. This stops GDB
668 trashing stubs that try to squeeze an extra NUL into what is
669 already a full buffer (As of 1999-12-04 that was most stubs). */
670 rsa
->remote_packet_size
= 400 - 1;
672 /* This one is filled in when a ``g'' packet is received. */
673 rsa
->actual_register_packet_size
= 0;
675 /* Should rsa->sizeof_g_packet needs more space than the
676 default, adjust the size accordingly. Remember that each byte is
677 encoded as two characters. 32 is the overhead for the packet
678 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
679 (``$NN:G...#NN'') is a better guess, the below has been padded a
681 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
682 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
684 /* Make sure that the packet buffer is plenty big enough for
685 this architecture. */
686 if (rs
->buf_size
< rsa
->remote_packet_size
)
688 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
689 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
695 /* Return the current allowed size of a remote packet. This is
696 inferred from the current architecture, and should be used to
697 limit the length of outgoing packets. */
699 get_remote_packet_size (void)
701 struct remote_state
*rs
= get_remote_state ();
702 struct remote_arch_state
*rsa
= get_remote_arch_state ();
704 if (rs
->explicit_packet_size
)
705 return rs
->explicit_packet_size
;
707 return rsa
->remote_packet_size
;
710 static struct packet_reg
*
711 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
713 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
717 struct packet_reg
*r
= &rsa
->regs
[regnum
];
719 gdb_assert (r
->regnum
== regnum
);
724 static struct packet_reg
*
725 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
729 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
731 struct packet_reg
*r
= &rsa
->regs
[i
];
739 /* FIXME: graces/2002-08-08: These variables should eventually be
740 bound to an instance of the target object (as in gdbarch-tdep()),
741 when such a thing exists. */
743 /* This is set to the data address of the access causing the target
744 to stop for a watchpoint. */
745 static CORE_ADDR remote_watch_data_address
;
747 /* This is non-zero if target stopped for a watchpoint. */
748 static int remote_stopped_by_watchpoint_p
;
750 static struct target_ops remote_ops
;
752 static struct target_ops extended_remote_ops
;
754 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
755 ``forever'' still use the normal timeout mechanism. This is
756 currently used by the ASYNC code to guarentee that target reads
757 during the initial connect always time-out. Once getpkt has been
758 modified to return a timeout indication and, in turn
759 remote_wait()/wait_for_inferior() have gained a timeout parameter
761 static int wait_forever_enabled_p
= 1;
763 /* Allow the user to specify what sequence to send to the remote
764 when he requests a program interruption: Although ^C is usually
765 what remote systems expect (this is the default, here), it is
766 sometimes preferable to send a break. On other systems such
767 as the Linux kernel, a break followed by g, which is Magic SysRq g
768 is required in order to interrupt the execution. */
769 const char interrupt_sequence_control_c
[] = "Ctrl-C";
770 const char interrupt_sequence_break
[] = "BREAK";
771 const char interrupt_sequence_break_g
[] = "BREAK-g";
772 static const char *const interrupt_sequence_modes
[] =
774 interrupt_sequence_control_c
,
775 interrupt_sequence_break
,
776 interrupt_sequence_break_g
,
779 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
782 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
783 struct cmd_list_element
*c
,
786 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
787 fprintf_filtered (file
,
788 _("Send the ASCII ETX character (Ctrl-c) "
789 "to the remote target to interrupt the "
790 "execution of the program.\n"));
791 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
792 fprintf_filtered (file
,
793 _("send a break signal to the remote target "
794 "to interrupt the execution of the program.\n"));
795 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
796 fprintf_filtered (file
,
797 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
798 "the remote target to interrupt the execution "
799 "of Linux kernel.\n"));
801 internal_error (__FILE__
, __LINE__
,
802 _("Invalid value for interrupt_sequence_mode: %s."),
803 interrupt_sequence_mode
);
806 /* This boolean variable specifies whether interrupt_sequence is sent
807 to the remote target when gdb connects to it.
808 This is mostly needed when you debug the Linux kernel: The Linux kernel
809 expects BREAK g which is Magic SysRq g for connecting gdb. */
810 static int interrupt_on_connect
= 0;
812 /* This variable is used to implement the "set/show remotebreak" commands.
813 Since these commands are now deprecated in favor of "set/show remote
814 interrupt-sequence", it no longer has any effect on the code. */
815 static int remote_break
;
818 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
821 interrupt_sequence_mode
= interrupt_sequence_break
;
823 interrupt_sequence_mode
= interrupt_sequence_control_c
;
827 show_remotebreak (struct ui_file
*file
, int from_tty
,
828 struct cmd_list_element
*c
,
833 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
834 remote_open knows that we don't have a file open when the program
836 static struct serial
*remote_desc
= NULL
;
838 /* This variable sets the number of bits in an address that are to be
839 sent in a memory ("M" or "m") packet. Normally, after stripping
840 leading zeros, the entire address would be sent. This variable
841 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
842 initial implementation of remote.c restricted the address sent in
843 memory packets to ``host::sizeof long'' bytes - (typically 32
844 bits). Consequently, for 64 bit targets, the upper 32 bits of an
845 address was never sent. Since fixing this bug may cause a break in
846 some remote targets this variable is principly provided to
847 facilitate backward compatibility. */
849 static unsigned int remote_address_size
;
851 /* Temporary to track who currently owns the terminal. See
852 remote_terminal_* for more details. */
854 static int remote_async_terminal_ours_p
;
856 /* The executable file to use for "run" on the remote side. */
858 static char *remote_exec_file
= "";
861 /* User configurable variables for the number of characters in a
862 memory read/write packet. MIN (rsa->remote_packet_size,
863 rsa->sizeof_g_packet) is the default. Some targets need smaller
864 values (fifo overruns, et.al.) and some users need larger values
865 (speed up transfers). The variables ``preferred_*'' (the user
866 request), ``current_*'' (what was actually set) and ``forced_*''
867 (Positive - a soft limit, negative - a hard limit). */
869 struct memory_packet_config
876 /* Compute the current size of a read/write packet. Since this makes
877 use of ``actual_register_packet_size'' the computation is dynamic. */
880 get_memory_packet_size (struct memory_packet_config
*config
)
882 struct remote_state
*rs
= get_remote_state ();
883 struct remote_arch_state
*rsa
= get_remote_arch_state ();
885 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
886 law?) that some hosts don't cope very well with large alloca()
887 calls. Eventually the alloca() code will be replaced by calls to
888 xmalloc() and make_cleanups() allowing this restriction to either
889 be lifted or removed. */
890 #ifndef MAX_REMOTE_PACKET_SIZE
891 #define MAX_REMOTE_PACKET_SIZE 16384
893 /* NOTE: 20 ensures we can write at least one byte. */
894 #ifndef MIN_REMOTE_PACKET_SIZE
895 #define MIN_REMOTE_PACKET_SIZE 20
900 if (config
->size
<= 0)
901 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
903 what_they_get
= config
->size
;
907 what_they_get
= get_remote_packet_size ();
908 /* Limit the packet to the size specified by the user. */
910 && what_they_get
> config
->size
)
911 what_they_get
= config
->size
;
913 /* Limit it to the size of the targets ``g'' response unless we have
914 permission from the stub to use a larger packet size. */
915 if (rs
->explicit_packet_size
== 0
916 && rsa
->actual_register_packet_size
> 0
917 && what_they_get
> rsa
->actual_register_packet_size
)
918 what_they_get
= rsa
->actual_register_packet_size
;
920 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
921 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
922 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
923 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
925 /* Make sure there is room in the global buffer for this packet
926 (including its trailing NUL byte). */
927 if (rs
->buf_size
< what_they_get
+ 1)
929 rs
->buf_size
= 2 * what_they_get
;
930 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
933 return what_they_get
;
936 /* Update the size of a read/write packet. If they user wants
937 something really big then do a sanity check. */
940 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
942 int fixed_p
= config
->fixed_p
;
943 long size
= config
->size
;
946 error (_("Argument required (integer, `fixed' or `limited')."));
947 else if (strcmp (args
, "hard") == 0
948 || strcmp (args
, "fixed") == 0)
950 else if (strcmp (args
, "soft") == 0
951 || strcmp (args
, "limit") == 0)
957 size
= strtoul (args
, &end
, 0);
959 error (_("Invalid %s (bad syntax)."), config
->name
);
961 /* Instead of explicitly capping the size of a packet to
962 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
963 instead allowed to set the size to something arbitrarily
965 if (size
> MAX_REMOTE_PACKET_SIZE
)
966 error (_("Invalid %s (too large)."), config
->name
);
970 if (fixed_p
&& !config
->fixed_p
)
972 if (! query (_("The target may not be able to correctly handle a %s\n"
973 "of %ld bytes. Change the packet size? "),
975 error (_("Packet size not changed."));
977 /* Update the config. */
978 config
->fixed_p
= fixed_p
;
983 show_memory_packet_size (struct memory_packet_config
*config
)
985 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
987 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
988 get_memory_packet_size (config
));
990 printf_filtered (_("Packets are limited to %ld bytes.\n"),
991 get_memory_packet_size (config
));
994 static struct memory_packet_config memory_write_packet_config
=
996 "memory-write-packet-size",
1000 set_memory_write_packet_size (char *args
, int from_tty
)
1002 set_memory_packet_size (args
, &memory_write_packet_config
);
1006 show_memory_write_packet_size (char *args
, int from_tty
)
1008 show_memory_packet_size (&memory_write_packet_config
);
1012 get_memory_write_packet_size (void)
1014 return get_memory_packet_size (&memory_write_packet_config
);
1017 static struct memory_packet_config memory_read_packet_config
=
1019 "memory-read-packet-size",
1023 set_memory_read_packet_size (char *args
, int from_tty
)
1025 set_memory_packet_size (args
, &memory_read_packet_config
);
1029 show_memory_read_packet_size (char *args
, int from_tty
)
1031 show_memory_packet_size (&memory_read_packet_config
);
1035 get_memory_read_packet_size (void)
1037 long size
= get_memory_packet_size (&memory_read_packet_config
);
1039 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1040 extra buffer size argument before the memory read size can be
1041 increased beyond this. */
1042 if (size
> get_remote_packet_size ())
1043 size
= get_remote_packet_size ();
1048 /* Generic configuration support for packets the stub optionally
1049 supports. Allows the user to specify the use of the packet as well
1050 as allowing GDB to auto-detect support in the remote stub. */
1054 PACKET_SUPPORT_UNKNOWN
= 0,
1059 struct packet_config
1063 enum auto_boolean detect
;
1064 enum packet_support support
;
1067 /* Analyze a packet's return value and update the packet config
1078 update_packet_config (struct packet_config
*config
)
1080 switch (config
->detect
)
1082 case AUTO_BOOLEAN_TRUE
:
1083 config
->support
= PACKET_ENABLE
;
1085 case AUTO_BOOLEAN_FALSE
:
1086 config
->support
= PACKET_DISABLE
;
1088 case AUTO_BOOLEAN_AUTO
:
1089 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1095 show_packet_config_cmd (struct packet_config
*config
)
1097 char *support
= "internal-error";
1099 switch (config
->support
)
1102 support
= "enabled";
1104 case PACKET_DISABLE
:
1105 support
= "disabled";
1107 case PACKET_SUPPORT_UNKNOWN
:
1108 support
= "unknown";
1111 switch (config
->detect
)
1113 case AUTO_BOOLEAN_AUTO
:
1114 printf_filtered (_("Support for the `%s' packet "
1115 "is auto-detected, currently %s.\n"),
1116 config
->name
, support
);
1118 case AUTO_BOOLEAN_TRUE
:
1119 case AUTO_BOOLEAN_FALSE
:
1120 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1121 config
->name
, support
);
1127 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1128 const char *title
, int legacy
)
1134 config
->name
= name
;
1135 config
->title
= title
;
1136 config
->detect
= AUTO_BOOLEAN_AUTO
;
1137 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1138 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1140 show_doc
= xstrprintf ("Show current use of remote "
1141 "protocol `%s' (%s) packet",
1143 /* set/show TITLE-packet {auto,on,off} */
1144 cmd_name
= xstrprintf ("%s-packet", title
);
1145 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1146 &config
->detect
, set_doc
,
1147 show_doc
, NULL
, /* help_doc */
1148 set_remote_protocol_packet_cmd
,
1149 show_remote_protocol_packet_cmd
,
1150 &remote_set_cmdlist
, &remote_show_cmdlist
);
1151 /* The command code copies the documentation strings. */
1154 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1159 legacy_name
= xstrprintf ("%s-packet", name
);
1160 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1161 &remote_set_cmdlist
);
1162 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1163 &remote_show_cmdlist
);
1167 static enum packet_result
1168 packet_check_result (const char *buf
)
1172 /* The stub recognized the packet request. Check that the
1173 operation succeeded. */
1175 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1177 /* "Enn" - definitly an error. */
1178 return PACKET_ERROR
;
1180 /* Always treat "E." as an error. This will be used for
1181 more verbose error messages, such as E.memtypes. */
1182 if (buf
[0] == 'E' && buf
[1] == '.')
1183 return PACKET_ERROR
;
1185 /* The packet may or may not be OK. Just assume it is. */
1189 /* The stub does not support the packet. */
1190 return PACKET_UNKNOWN
;
1193 static enum packet_result
1194 packet_ok (const char *buf
, struct packet_config
*config
)
1196 enum packet_result result
;
1198 result
= packet_check_result (buf
);
1203 /* The stub recognized the packet request. */
1204 switch (config
->support
)
1206 case PACKET_SUPPORT_UNKNOWN
:
1208 fprintf_unfiltered (gdb_stdlog
,
1209 "Packet %s (%s) is supported\n",
1210 config
->name
, config
->title
);
1211 config
->support
= PACKET_ENABLE
;
1213 case PACKET_DISABLE
:
1214 internal_error (__FILE__
, __LINE__
,
1215 _("packet_ok: attempt to use a disabled packet"));
1221 case PACKET_UNKNOWN
:
1222 /* The stub does not support the packet. */
1223 switch (config
->support
)
1226 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1227 /* If the stub previously indicated that the packet was
1228 supported then there is a protocol error.. */
1229 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1230 config
->name
, config
->title
);
1232 /* The user set it wrong. */
1233 error (_("Enabled packet %s (%s) not recognized by stub"),
1234 config
->name
, config
->title
);
1236 case PACKET_SUPPORT_UNKNOWN
:
1238 fprintf_unfiltered (gdb_stdlog
,
1239 "Packet %s (%s) is NOT supported\n",
1240 config
->name
, config
->title
);
1241 config
->support
= PACKET_DISABLE
;
1243 case PACKET_DISABLE
:
1265 PACKET_vFile_pwrite
,
1267 PACKET_vFile_unlink
,
1268 PACKET_vFile_readlink
,
1270 PACKET_qXfer_features
,
1271 PACKET_qXfer_libraries
,
1272 PACKET_qXfer_libraries_svr4
,
1273 PACKET_qXfer_memory_map
,
1274 PACKET_qXfer_spu_read
,
1275 PACKET_qXfer_spu_write
,
1276 PACKET_qXfer_osdata
,
1277 PACKET_qXfer_threads
,
1278 PACKET_qXfer_statictrace_read
,
1279 PACKET_qXfer_traceframe_info
,
1285 PACKET_QPassSignals
,
1286 PACKET_QProgramSignals
,
1287 PACKET_qSearch_memory
,
1290 PACKET_QStartNoAckMode
,
1292 PACKET_qXfer_siginfo_read
,
1293 PACKET_qXfer_siginfo_write
,
1295 PACKET_ConditionalTracepoints
,
1296 PACKET_ConditionalBreakpoints
,
1297 PACKET_BreakpointCommands
,
1298 PACKET_FastTracepoints
,
1299 PACKET_StaticTracepoints
,
1300 PACKET_InstallInTrace
,
1303 PACKET_TracepointSource
,
1306 PACKET_QDisableRandomization
,
1308 PACKET_QTBuffer_size
,
1311 PACKET_qXfer_btrace
,
1315 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1318 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1319 struct cmd_list_element
*c
)
1321 struct packet_config
*packet
;
1323 for (packet
= remote_protocol_packets
;
1324 packet
< &remote_protocol_packets
[PACKET_MAX
];
1327 if (&packet
->detect
== c
->var
)
1329 update_packet_config (packet
);
1333 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1338 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1339 struct cmd_list_element
*c
,
1342 struct packet_config
*packet
;
1344 for (packet
= remote_protocol_packets
;
1345 packet
< &remote_protocol_packets
[PACKET_MAX
];
1348 if (&packet
->detect
== c
->var
)
1350 show_packet_config_cmd (packet
);
1354 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1358 /* Should we try one of the 'Z' requests? */
1362 Z_PACKET_SOFTWARE_BP
,
1363 Z_PACKET_HARDWARE_BP
,
1370 /* For compatibility with older distributions. Provide a ``set remote
1371 Z-packet ...'' command that updates all the Z packet types. */
1373 static enum auto_boolean remote_Z_packet_detect
;
1376 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1377 struct cmd_list_element
*c
)
1381 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1383 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1384 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1389 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1390 struct cmd_list_element
*c
,
1395 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1397 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1401 /* Should we try the 'ThreadInfo' query packet?
1403 This variable (NOT available to the user: auto-detect only!)
1404 determines whether GDB will use the new, simpler "ThreadInfo"
1405 query or the older, more complex syntax for thread queries.
1406 This is an auto-detect variable (set to true at each connect,
1407 and set to false when the target fails to recognize it). */
1409 static int use_threadinfo_query
;
1410 static int use_threadextra_query
;
1412 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1413 static struct async_signal_handler
*sigint_remote_twice_token
;
1414 static struct async_signal_handler
*sigint_remote_token
;
1417 /* Asynchronous signal handle registered as event loop source for
1418 when we have pending events ready to be passed to the core. */
1420 static struct async_event_handler
*remote_async_inferior_event_token
;
1424 static ptid_t magic_null_ptid
;
1425 static ptid_t not_sent_ptid
;
1426 static ptid_t any_thread_ptid
;
1428 /* These are the threads which we last sent to the remote system. The
1429 TID member will be -1 for all or -2 for not sent yet. */
1431 static ptid_t general_thread
;
1432 static ptid_t continue_thread
;
1434 /* This is the traceframe which we last selected on the remote system.
1435 It will be -1 if no traceframe is selected. */
1436 static int remote_traceframe_number
= -1;
1438 /* Find out if the stub attached to PID (and hence GDB should offer to
1439 detach instead of killing it when bailing out). */
1442 remote_query_attached (int pid
)
1444 struct remote_state
*rs
= get_remote_state ();
1445 size_t size
= get_remote_packet_size ();
1447 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1450 if (remote_multi_process_p (rs
))
1451 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1453 xsnprintf (rs
->buf
, size
, "qAttached");
1456 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1458 switch (packet_ok (rs
->buf
,
1459 &remote_protocol_packets
[PACKET_qAttached
]))
1462 if (strcmp (rs
->buf
, "1") == 0)
1466 warning (_("Remote failure reply: %s"), rs
->buf
);
1468 case PACKET_UNKNOWN
:
1475 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1476 has been invented by GDB, instead of reported by the target. Since
1477 we can be connected to a remote system before before knowing about
1478 any inferior, mark the target with execution when we find the first
1479 inferior. If ATTACHED is 1, then we had just attached to this
1480 inferior. If it is 0, then we just created this inferior. If it
1481 is -1, then try querying the remote stub to find out if it had
1482 attached to the inferior or not. */
1484 static struct inferior
*
1485 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1487 struct inferior
*inf
;
1489 /* Check whether this process we're learning about is to be
1490 considered attached, or if is to be considered to have been
1491 spawned by the stub. */
1493 attached
= remote_query_attached (pid
);
1495 if (gdbarch_has_global_solist (target_gdbarch ()))
1497 /* If the target shares code across all inferiors, then every
1498 attach adds a new inferior. */
1499 inf
= add_inferior (pid
);
1501 /* ... and every inferior is bound to the same program space.
1502 However, each inferior may still have its own address
1504 inf
->aspace
= maybe_new_address_space ();
1505 inf
->pspace
= current_program_space
;
1509 /* In the traditional debugging scenario, there's a 1-1 match
1510 between program/address spaces. We simply bind the inferior
1511 to the program space's address space. */
1512 inf
= current_inferior ();
1513 inferior_appeared (inf
, pid
);
1516 inf
->attach_flag
= attached
;
1517 inf
->fake_pid_p
= fake_pid_p
;
1522 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1523 according to RUNNING. */
1526 remote_add_thread (ptid_t ptid
, int running
)
1530 set_executing (ptid
, running
);
1531 set_running (ptid
, running
);
1534 /* Come here when we learn about a thread id from the remote target.
1535 It may be the first time we hear about such thread, so take the
1536 opportunity to add it to GDB's thread list. In case this is the
1537 first time we're noticing its corresponding inferior, add it to
1538 GDB's inferior list as well. */
1541 remote_notice_new_inferior (ptid_t currthread
, int running
)
1543 /* If this is a new thread, add it to GDB's thread list.
1544 If we leave it up to WFI to do this, bad things will happen. */
1546 if (in_thread_list (currthread
) && is_exited (currthread
))
1548 /* We're seeing an event on a thread id we knew had exited.
1549 This has to be a new thread reusing the old id. Add it. */
1550 remote_add_thread (currthread
, running
);
1554 if (!in_thread_list (currthread
))
1556 struct inferior
*inf
= NULL
;
1557 int pid
= ptid_get_pid (currthread
);
1559 if (ptid_is_pid (inferior_ptid
)
1560 && pid
== ptid_get_pid (inferior_ptid
))
1562 /* inferior_ptid has no thread member yet. This can happen
1563 with the vAttach -> remote_wait,"TAAthread:" path if the
1564 stub doesn't support qC. This is the first stop reported
1565 after an attach, so this is the main thread. Update the
1566 ptid in the thread list. */
1567 if (in_thread_list (pid_to_ptid (pid
)))
1568 thread_change_ptid (inferior_ptid
, currthread
);
1571 remote_add_thread (currthread
, running
);
1572 inferior_ptid
= currthread
;
1577 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1579 /* inferior_ptid is not set yet. This can happen with the
1580 vRun -> remote_wait,"TAAthread:" path if the stub
1581 doesn't support qC. This is the first stop reported
1582 after an attach, so this is the main thread. Update the
1583 ptid in the thread list. */
1584 thread_change_ptid (inferior_ptid
, currthread
);
1588 /* When connecting to a target remote, or to a target
1589 extended-remote which already was debugging an inferior, we
1590 may not know about it yet. Add it before adding its child
1591 thread, so notifications are emitted in a sensible order. */
1592 if (!in_inferior_list (ptid_get_pid (currthread
)))
1594 struct remote_state
*rs
= get_remote_state ();
1595 int fake_pid_p
= !remote_multi_process_p (rs
);
1597 inf
= remote_add_inferior (fake_pid_p
,
1598 ptid_get_pid (currthread
), -1);
1601 /* This is really a new thread. Add it. */
1602 remote_add_thread (currthread
, running
);
1604 /* If we found a new inferior, let the common code do whatever
1605 it needs to with it (e.g., read shared libraries, insert
1608 notice_new_inferior (currthread
, running
, 0);
1612 /* Return the private thread data, creating it if necessary. */
1614 static struct private_thread_info
*
1615 demand_private_info (ptid_t ptid
)
1617 struct thread_info
*info
= find_thread_ptid (ptid
);
1623 info
->private = xmalloc (sizeof (*(info
->private)));
1624 info
->private_dtor
= free_private_thread_info
;
1625 info
->private->core
= -1;
1626 info
->private->extra
= 0;
1629 return info
->private;
1632 /* Call this function as a result of
1633 1) A halt indication (T packet) containing a thread id
1634 2) A direct query of currthread
1635 3) Successful execution of set thread */
1638 record_currthread (ptid_t currthread
)
1640 general_thread
= currthread
;
1643 static char *last_pass_packet
;
1645 /* If 'QPassSignals' is supported, tell the remote stub what signals
1646 it can simply pass through to the inferior without reporting. */
1649 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1651 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1653 char *pass_packet
, *p
;
1656 gdb_assert (numsigs
< 256);
1657 for (i
= 0; i
< numsigs
; i
++)
1659 if (pass_signals
[i
])
1662 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1663 strcpy (pass_packet
, "QPassSignals:");
1664 p
= pass_packet
+ strlen (pass_packet
);
1665 for (i
= 0; i
< numsigs
; i
++)
1667 if (pass_signals
[i
])
1670 *p
++ = tohex (i
>> 4);
1671 *p
++ = tohex (i
& 15);
1680 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1682 struct remote_state
*rs
= get_remote_state ();
1683 char *buf
= rs
->buf
;
1685 putpkt (pass_packet
);
1686 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1687 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1688 if (last_pass_packet
)
1689 xfree (last_pass_packet
);
1690 last_pass_packet
= pass_packet
;
1693 xfree (pass_packet
);
1697 /* The last QProgramSignals packet sent to the target. We bypass
1698 sending a new program signals list down to the target if the new
1699 packet is exactly the same as the last we sent. IOW, we only let
1700 the target know about program signals list changes. */
1702 static char *last_program_signals_packet
;
1704 /* If 'QProgramSignals' is supported, tell the remote stub what
1705 signals it should pass through to the inferior when detaching. */
1708 remote_program_signals (int numsigs
, unsigned char *signals
)
1710 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1715 gdb_assert (numsigs
< 256);
1716 for (i
= 0; i
< numsigs
; i
++)
1721 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1722 strcpy (packet
, "QProgramSignals:");
1723 p
= packet
+ strlen (packet
);
1724 for (i
= 0; i
< numsigs
; i
++)
1726 if (signal_pass_state (i
))
1729 *p
++ = tohex (i
>> 4);
1730 *p
++ = tohex (i
& 15);
1739 if (!last_program_signals_packet
1740 || strcmp (last_program_signals_packet
, packet
) != 0)
1742 struct remote_state
*rs
= get_remote_state ();
1743 char *buf
= rs
->buf
;
1746 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1747 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1748 xfree (last_program_signals_packet
);
1749 last_program_signals_packet
= packet
;
1756 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1757 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1758 thread. If GEN is set, set the general thread, if not, then set
1759 the step/continue thread. */
1761 set_thread (struct ptid ptid
, int gen
)
1763 struct remote_state
*rs
= get_remote_state ();
1764 ptid_t state
= gen
? general_thread
: continue_thread
;
1765 char *buf
= rs
->buf
;
1766 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1768 if (ptid_equal (state
, ptid
))
1772 *buf
++ = gen
? 'g' : 'c';
1773 if (ptid_equal (ptid
, magic_null_ptid
))
1774 xsnprintf (buf
, endbuf
- buf
, "0");
1775 else if (ptid_equal (ptid
, any_thread_ptid
))
1776 xsnprintf (buf
, endbuf
- buf
, "0");
1777 else if (ptid_equal (ptid
, minus_one_ptid
))
1778 xsnprintf (buf
, endbuf
- buf
, "-1");
1780 write_ptid (buf
, endbuf
, ptid
);
1782 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1784 general_thread
= ptid
;
1786 continue_thread
= ptid
;
1790 set_general_thread (struct ptid ptid
)
1792 set_thread (ptid
, 1);
1796 set_continue_thread (struct ptid ptid
)
1798 set_thread (ptid
, 0);
1801 /* Change the remote current process. Which thread within the process
1802 ends up selected isn't important, as long as it is the same process
1803 as what INFERIOR_PTID points to.
1805 This comes from that fact that there is no explicit notion of
1806 "selected process" in the protocol. The selected process for
1807 general operations is the process the selected general thread
1811 set_general_process (void)
1813 struct remote_state
*rs
= get_remote_state ();
1815 /* If the remote can't handle multiple processes, don't bother. */
1816 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1819 /* We only need to change the remote current thread if it's pointing
1820 at some other process. */
1821 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1822 set_general_thread (inferior_ptid
);
1826 /* Return nonzero if the thread PTID is still alive on the remote
1830 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1832 struct remote_state
*rs
= get_remote_state ();
1835 if (ptid_equal (ptid
, magic_null_ptid
))
1836 /* The main thread is always alive. */
1839 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1840 /* The main thread is always alive. This can happen after a
1841 vAttach, if the remote side doesn't support
1846 endp
= rs
->buf
+ get_remote_packet_size ();
1849 write_ptid (p
, endp
, ptid
);
1852 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1853 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1856 /* About these extended threadlist and threadinfo packets. They are
1857 variable length packets but, the fields within them are often fixed
1858 length. They are redundent enough to send over UDP as is the
1859 remote protocol in general. There is a matching unit test module
1862 #define OPAQUETHREADBYTES 8
1864 /* a 64 bit opaque identifier */
1865 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1867 /* WARNING: This threadref data structure comes from the remote O.S.,
1868 libstub protocol encoding, and remote.c. It is not particularly
1871 /* Right now, the internal structure is int. We want it to be bigger.
1872 Plan to fix this. */
1874 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1876 /* gdb_ext_thread_info is an internal GDB data structure which is
1877 equivalent to the reply of the remote threadinfo packet. */
1879 struct gdb_ext_thread_info
1881 threadref threadid
; /* External form of thread reference. */
1882 int active
; /* Has state interesting to GDB?
1884 char display
[256]; /* Brief state display, name,
1885 blocked/suspended. */
1886 char shortname
[32]; /* To be used to name threads. */
1887 char more_display
[256]; /* Long info, statistics, queue depth,
1891 /* The volume of remote transfers can be limited by submitting
1892 a mask containing bits specifying the desired information.
1893 Use a union of these values as the 'selection' parameter to
1894 get_thread_info. FIXME: Make these TAG names more thread specific. */
1896 #define TAG_THREADID 1
1897 #define TAG_EXISTS 2
1898 #define TAG_DISPLAY 4
1899 #define TAG_THREADNAME 8
1900 #define TAG_MOREDISPLAY 16
1902 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1904 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1906 static char *unpack_nibble (char *buf
, int *val
);
1908 static char *pack_nibble (char *buf
, int nibble
);
1910 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1912 static char *unpack_byte (char *buf
, int *value
);
1914 static char *pack_int (char *buf
, int value
);
1916 static char *unpack_int (char *buf
, int *value
);
1918 static char *unpack_string (char *src
, char *dest
, int length
);
1920 static char *pack_threadid (char *pkt
, threadref
*id
);
1922 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1924 void int_to_threadref (threadref
*id
, int value
);
1926 static int threadref_to_int (threadref
*ref
);
1928 static void copy_threadref (threadref
*dest
, threadref
*src
);
1930 static int threadmatch (threadref
*dest
, threadref
*src
);
1932 static char *pack_threadinfo_request (char *pkt
, int mode
,
1935 static int remote_unpack_thread_info_response (char *pkt
,
1936 threadref
*expectedref
,
1937 struct gdb_ext_thread_info
1941 static int remote_get_threadinfo (threadref
*threadid
,
1942 int fieldset
, /*TAG mask */
1943 struct gdb_ext_thread_info
*info
);
1945 static char *pack_threadlist_request (char *pkt
, int startflag
,
1947 threadref
*nextthread
);
1949 static int parse_threadlist_response (char *pkt
,
1951 threadref
*original_echo
,
1952 threadref
*resultlist
,
1955 static int remote_get_threadlist (int startflag
,
1956 threadref
*nextthread
,
1960 threadref
*threadlist
);
1962 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1964 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1965 void *context
, int looplimit
);
1967 static int remote_newthread_step (threadref
*ref
, void *context
);
1970 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1971 buffer we're allowed to write to. Returns
1972 BUF+CHARACTERS_WRITTEN. */
1975 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1978 struct remote_state
*rs
= get_remote_state ();
1980 if (remote_multi_process_p (rs
))
1982 pid
= ptid_get_pid (ptid
);
1984 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1986 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1988 tid
= ptid_get_tid (ptid
);
1990 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1992 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1997 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1998 passed the last parsed char. Returns null_ptid on error. */
2001 read_ptid (char *buf
, char **obuf
)
2005 ULONGEST pid
= 0, tid
= 0;
2009 /* Multi-process ptid. */
2010 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2012 error (_("invalid remote ptid: %s"), p
);
2015 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2018 return ptid_build (pid
, 0, tid
);
2021 /* No multi-process. Just a tid. */
2022 pp
= unpack_varlen_hex (p
, &tid
);
2024 /* Since the stub is not sending a process id, then default to
2025 what's in inferior_ptid, unless it's null at this point. If so,
2026 then since there's no way to know the pid of the reported
2027 threads, use the magic number. */
2028 if (ptid_equal (inferior_ptid
, null_ptid
))
2029 pid
= ptid_get_pid (magic_null_ptid
);
2031 pid
= ptid_get_pid (inferior_ptid
);
2035 return ptid_build (pid
, 0, tid
);
2038 /* Encode 64 bits in 16 chars of hex. */
2040 static const char hexchars
[] = "0123456789abcdef";
2043 ishex (int ch
, int *val
)
2045 if ((ch
>= 'a') && (ch
<= 'f'))
2047 *val
= ch
- 'a' + 10;
2050 if ((ch
>= 'A') && (ch
<= 'F'))
2052 *val
= ch
- 'A' + 10;
2055 if ((ch
>= '0') && (ch
<= '9'))
2066 if (ch
>= 'a' && ch
<= 'f')
2067 return ch
- 'a' + 10;
2068 if (ch
>= '0' && ch
<= '9')
2070 if (ch
>= 'A' && ch
<= 'F')
2071 return ch
- 'A' + 10;
2076 stub_unpack_int (char *buff
, int fieldlength
)
2083 nibble
= stubhex (*buff
++);
2087 retval
= retval
<< 4;
2093 unpack_varlen_hex (char *buff
, /* packet to parse */
2097 ULONGEST retval
= 0;
2099 while (ishex (*buff
, &nibble
))
2102 retval
= retval
<< 4;
2103 retval
|= nibble
& 0x0f;
2110 unpack_nibble (char *buf
, int *val
)
2112 *val
= fromhex (*buf
++);
2117 pack_nibble (char *buf
, int nibble
)
2119 *buf
++ = hexchars
[(nibble
& 0x0f)];
2124 pack_hex_byte (char *pkt
, int byte
)
2126 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2127 *pkt
++ = hexchars
[(byte
& 0xf)];
2132 unpack_byte (char *buf
, int *value
)
2134 *value
= stub_unpack_int (buf
, 2);
2139 pack_int (char *buf
, int value
)
2141 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2142 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2143 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2144 buf
= pack_hex_byte (buf
, (value
& 0xff));
2149 unpack_int (char *buf
, int *value
)
2151 *value
= stub_unpack_int (buf
, 8);
2155 #if 0 /* Currently unused, uncomment when needed. */
2156 static char *pack_string (char *pkt
, char *string
);
2159 pack_string (char *pkt
, char *string
)
2164 len
= strlen (string
);
2166 len
= 200; /* Bigger than most GDB packets, junk??? */
2167 pkt
= pack_hex_byte (pkt
, len
);
2171 if ((ch
== '\0') || (ch
== '#'))
2172 ch
= '*'; /* Protect encapsulation. */
2177 #endif /* 0 (unused) */
2180 unpack_string (char *src
, char *dest
, int length
)
2189 pack_threadid (char *pkt
, threadref
*id
)
2192 unsigned char *altid
;
2194 altid
= (unsigned char *) id
;
2195 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2197 pkt
= pack_hex_byte (pkt
, *altid
++);
2203 unpack_threadid (char *inbuf
, threadref
*id
)
2206 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2209 altref
= (char *) id
;
2211 while (inbuf
< limit
)
2213 x
= stubhex (*inbuf
++);
2214 y
= stubhex (*inbuf
++);
2215 *altref
++ = (x
<< 4) | y
;
2220 /* Externally, threadrefs are 64 bits but internally, they are still
2221 ints. This is due to a mismatch of specifications. We would like
2222 to use 64bit thread references internally. This is an adapter
2226 int_to_threadref (threadref
*id
, int value
)
2228 unsigned char *scan
;
2230 scan
= (unsigned char *) id
;
2236 *scan
++ = (value
>> 24) & 0xff;
2237 *scan
++ = (value
>> 16) & 0xff;
2238 *scan
++ = (value
>> 8) & 0xff;
2239 *scan
++ = (value
& 0xff);
2243 threadref_to_int (threadref
*ref
)
2246 unsigned char *scan
;
2252 value
= (value
<< 8) | ((*scan
++) & 0xff);
2257 copy_threadref (threadref
*dest
, threadref
*src
)
2260 unsigned char *csrc
, *cdest
;
2262 csrc
= (unsigned char *) src
;
2263 cdest
= (unsigned char *) dest
;
2270 threadmatch (threadref
*dest
, threadref
*src
)
2272 /* Things are broken right now, so just assume we got a match. */
2274 unsigned char *srcp
, *destp
;
2276 srcp
= (char *) src
;
2277 destp
= (char *) dest
;
2281 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2288 threadid:1, # always request threadid
2295 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2298 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2300 *pkt
++ = 'q'; /* Info Query */
2301 *pkt
++ = 'P'; /* process or thread info */
2302 pkt
= pack_int (pkt
, mode
); /* mode */
2303 pkt
= pack_threadid (pkt
, id
); /* threadid */
2304 *pkt
= '\0'; /* terminate */
2308 /* These values tag the fields in a thread info response packet. */
2309 /* Tagging the fields allows us to request specific fields and to
2310 add more fields as time goes by. */
2312 #define TAG_THREADID 1 /* Echo the thread identifier. */
2313 #define TAG_EXISTS 2 /* Is this process defined enough to
2314 fetch registers and its stack? */
2315 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2316 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2317 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2321 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2322 struct gdb_ext_thread_info
*info
)
2324 struct remote_state
*rs
= get_remote_state ();
2328 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2331 /* info->threadid = 0; FIXME: implement zero_threadref. */
2333 info
->display
[0] = '\0';
2334 info
->shortname
[0] = '\0';
2335 info
->more_display
[0] = '\0';
2337 /* Assume the characters indicating the packet type have been
2339 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2340 pkt
= unpack_threadid (pkt
, &ref
);
2343 warning (_("Incomplete response to threadinfo request."));
2344 if (!threadmatch (&ref
, expectedref
))
2345 { /* This is an answer to a different request. */
2346 warning (_("ERROR RMT Thread info mismatch."));
2349 copy_threadref (&info
->threadid
, &ref
);
2351 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2353 /* Packets are terminated with nulls. */
2354 while ((pkt
< limit
) && mask
&& *pkt
)
2356 pkt
= unpack_int (pkt
, &tag
); /* tag */
2357 pkt
= unpack_byte (pkt
, &length
); /* length */
2358 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2360 warning (_("ERROR RMT: threadinfo tag mismatch."));
2364 if (tag
== TAG_THREADID
)
2368 warning (_("ERROR RMT: length of threadid is not 16."));
2372 pkt
= unpack_threadid (pkt
, &ref
);
2373 mask
= mask
& ~TAG_THREADID
;
2376 if (tag
== TAG_EXISTS
)
2378 info
->active
= stub_unpack_int (pkt
, length
);
2380 mask
= mask
& ~(TAG_EXISTS
);
2383 warning (_("ERROR RMT: 'exists' length too long."));
2389 if (tag
== TAG_THREADNAME
)
2391 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2392 mask
= mask
& ~TAG_THREADNAME
;
2395 if (tag
== TAG_DISPLAY
)
2397 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2398 mask
= mask
& ~TAG_DISPLAY
;
2401 if (tag
== TAG_MOREDISPLAY
)
2403 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2404 mask
= mask
& ~TAG_MOREDISPLAY
;
2407 warning (_("ERROR RMT: unknown thread info tag."));
2408 break; /* Not a tag we know about. */
2414 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2415 struct gdb_ext_thread_info
*info
)
2417 struct remote_state
*rs
= get_remote_state ();
2420 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2422 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2424 if (rs
->buf
[0] == '\0')
2427 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2432 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2435 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2436 threadref
*nextthread
)
2438 *pkt
++ = 'q'; /* info query packet */
2439 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2440 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2441 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2442 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2447 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2450 parse_threadlist_response (char *pkt
, int result_limit
,
2451 threadref
*original_echo
, threadref
*resultlist
,
2454 struct remote_state
*rs
= get_remote_state ();
2456 int count
, resultcount
, done
;
2459 /* Assume the 'q' and 'M chars have been stripped. */
2460 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2461 /* done parse past here */
2462 pkt
= unpack_byte (pkt
, &count
); /* count field */
2463 pkt
= unpack_nibble (pkt
, &done
);
2464 /* The first threadid is the argument threadid. */
2465 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2466 while ((count
-- > 0) && (pkt
< limit
))
2468 pkt
= unpack_threadid (pkt
, resultlist
++);
2469 if (resultcount
++ >= result_limit
)
2478 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2479 int *done
, int *result_count
, threadref
*threadlist
)
2481 struct remote_state
*rs
= get_remote_state ();
2482 static threadref echo_nextthread
;
2485 /* Trancate result limit to be smaller than the packet size. */
2486 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2487 >= get_remote_packet_size ())
2488 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2490 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2492 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2494 if (*rs
->buf
== '\0')
2498 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2501 if (!threadmatch (&echo_nextthread
, nextthread
))
2503 /* FIXME: This is a good reason to drop the packet. */
2504 /* Possably, there is a duplicate response. */
2506 retransmit immediatly - race conditions
2507 retransmit after timeout - yes
2509 wait for packet, then exit
2511 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2512 return 0; /* I choose simply exiting. */
2514 if (*result_count
<= 0)
2518 warning (_("RMT ERROR : failed to get remote thread list."));
2521 return result
; /* break; */
2523 if (*result_count
> result_limit
)
2526 warning (_("RMT ERROR: threadlist response longer than requested."));
2532 /* This is the interface between remote and threads, remotes upper
2535 /* remote_find_new_threads retrieves the thread list and for each
2536 thread in the list, looks up the thread in GDB's internal list,
2537 adding the thread if it does not already exist. This involves
2538 getting partial thread lists from the remote target so, polling the
2539 quit_flag is required. */
2542 /* About this many threadisds fit in a packet. */
2544 #define MAXTHREADLISTRESULTS 32
2547 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2550 int done
, i
, result_count
;
2554 static threadref nextthread
;
2555 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2560 if (loopcount
++ > looplimit
)
2563 warning (_("Remote fetch threadlist -infinite loop-."));
2566 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2567 &done
, &result_count
, resultthreadlist
))
2572 /* Clear for later iterations. */
2574 /* Setup to resume next batch of thread references, set nextthread. */
2575 if (result_count
>= 1)
2576 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2578 while (result_count
--)
2579 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2586 remote_newthread_step (threadref
*ref
, void *context
)
2588 int pid
= ptid_get_pid (inferior_ptid
);
2589 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2591 if (!in_thread_list (ptid
))
2593 return 1; /* continue iterator */
2596 #define CRAZY_MAX_THREADS 1000
2599 remote_current_thread (ptid_t oldpid
)
2601 struct remote_state
*rs
= get_remote_state ();
2604 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2605 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2606 return read_ptid (&rs
->buf
[2], NULL
);
2611 /* Find new threads for info threads command.
2612 * Original version, using John Metzler's thread protocol.
2616 remote_find_new_threads (void)
2618 remote_threadlist_iterator (remote_newthread_step
, 0,
2622 #if defined(HAVE_LIBEXPAT)
2624 typedef struct thread_item
2630 DEF_VEC_O(thread_item_t
);
2632 struct threads_parsing_context
2634 VEC (thread_item_t
) *items
;
2638 start_thread (struct gdb_xml_parser
*parser
,
2639 const struct gdb_xml_element
*element
,
2640 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2642 struct threads_parsing_context
*data
= user_data
;
2644 struct thread_item item
;
2646 struct gdb_xml_value
*attr
;
2648 id
= xml_find_attribute (attributes
, "id")->value
;
2649 item
.ptid
= read_ptid (id
, NULL
);
2651 attr
= xml_find_attribute (attributes
, "core");
2653 item
.core
= *(ULONGEST
*) attr
->value
;
2659 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2663 end_thread (struct gdb_xml_parser
*parser
,
2664 const struct gdb_xml_element
*element
,
2665 void *user_data
, const char *body_text
)
2667 struct threads_parsing_context
*data
= user_data
;
2669 if (body_text
&& *body_text
)
2670 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2673 const struct gdb_xml_attribute thread_attributes
[] = {
2674 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2675 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2676 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2679 const struct gdb_xml_element thread_children
[] = {
2680 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2683 const struct gdb_xml_element threads_children
[] = {
2684 { "thread", thread_attributes
, thread_children
,
2685 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2686 start_thread
, end_thread
},
2687 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2690 const struct gdb_xml_element threads_elements
[] = {
2691 { "threads", NULL
, threads_children
,
2692 GDB_XML_EF_NONE
, NULL
, NULL
},
2693 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2696 /* Discard the contents of the constructed thread info context. */
2699 clear_threads_parsing_context (void *p
)
2701 struct threads_parsing_context
*context
= p
;
2703 struct thread_item
*item
;
2705 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2706 xfree (item
->extra
);
2708 VEC_free (thread_item_t
, context
->items
);
2714 * Find all threads for info threads command.
2715 * Uses new thread protocol contributed by Cisco.
2716 * Falls back and attempts to use the older method (above)
2717 * if the target doesn't respond to the new method.
2721 remote_threads_info (struct target_ops
*ops
)
2723 struct remote_state
*rs
= get_remote_state ();
2727 if (remote_desc
== 0) /* paranoia */
2728 error (_("Command can only be used when connected to the remote target."));
2730 #if defined(HAVE_LIBEXPAT)
2731 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2733 char *xml
= target_read_stralloc (¤t_target
,
2734 TARGET_OBJECT_THREADS
, NULL
);
2736 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2740 struct threads_parsing_context context
;
2742 context
.items
= NULL
;
2743 make_cleanup (clear_threads_parsing_context
, &context
);
2745 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2746 threads_elements
, xml
, &context
) == 0)
2749 struct thread_item
*item
;
2752 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2755 if (!ptid_equal (item
->ptid
, null_ptid
))
2757 struct private_thread_info
*info
;
2758 /* In non-stop mode, we assume new found threads
2759 are running until proven otherwise with a
2760 stop reply. In all-stop, we can only get
2761 here if all threads are stopped. */
2762 int running
= non_stop
? 1 : 0;
2764 remote_notice_new_inferior (item
->ptid
, running
);
2766 info
= demand_private_info (item
->ptid
);
2767 info
->core
= item
->core
;
2768 info
->extra
= item
->extra
;
2775 do_cleanups (back_to
);
2780 if (use_threadinfo_query
)
2782 putpkt ("qfThreadInfo");
2783 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2785 if (bufp
[0] != '\0') /* q packet recognized */
2787 struct cleanup
*old_chain
;
2790 /* remote_notice_new_inferior (in the loop below) may make
2791 new RSP calls, which clobber rs->buf. Work with a
2793 bufp
= saved_reply
= xstrdup (rs
->buf
);
2794 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2796 while (*bufp
++ == 'm') /* reply contains one or more TID */
2800 new_thread
= read_ptid (bufp
, &bufp
);
2801 if (!ptid_equal (new_thread
, null_ptid
))
2803 /* In non-stop mode, we assume new found threads
2804 are running until proven otherwise with a
2805 stop reply. In all-stop, we can only get
2806 here if all threads are stopped. */
2807 int running
= non_stop
? 1 : 0;
2809 remote_notice_new_inferior (new_thread
, running
);
2812 while (*bufp
++ == ','); /* comma-separated list */
2813 free_current_contents (&saved_reply
);
2814 putpkt ("qsThreadInfo");
2815 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2816 bufp
= saved_reply
= xstrdup (rs
->buf
);
2818 do_cleanups (old_chain
);
2823 /* Only qfThreadInfo is supported in non-stop mode. */
2827 /* Else fall back to old method based on jmetzler protocol. */
2828 use_threadinfo_query
= 0;
2829 remote_find_new_threads ();
2834 * Collect a descriptive string about the given thread.
2835 * The target may say anything it wants to about the thread
2836 * (typically info about its blocked / runnable state, name, etc.).
2837 * This string will appear in the info threads display.
2839 * Optional: targets are not required to implement this function.
2843 remote_threads_extra_info (struct thread_info
*tp
)
2845 struct remote_state
*rs
= get_remote_state ();
2849 struct gdb_ext_thread_info threadinfo
;
2850 static char display_buf
[100]; /* arbitrary... */
2851 int n
= 0; /* position in display_buf */
2853 if (remote_desc
== 0) /* paranoia */
2854 internal_error (__FILE__
, __LINE__
,
2855 _("remote_threads_extra_info"));
2857 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2858 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2859 /* This is the main thread which was added by GDB. The remote
2860 server doesn't know about it. */
2863 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2865 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2867 if (info
&& info
->private)
2868 return info
->private->extra
;
2873 if (use_threadextra_query
)
2876 char *endb
= rs
->buf
+ get_remote_packet_size ();
2878 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2880 write_ptid (b
, endb
, tp
->ptid
);
2883 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2884 if (rs
->buf
[0] != 0)
2886 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2887 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2888 display_buf
[result
] = '\0';
2893 /* If the above query fails, fall back to the old method. */
2894 use_threadextra_query
= 0;
2895 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2896 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2897 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2898 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2899 if (threadinfo
.active
)
2901 if (*threadinfo
.shortname
)
2902 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2903 " Name: %s,", threadinfo
.shortname
);
2904 if (*threadinfo
.display
)
2905 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2906 " State: %s,", threadinfo
.display
);
2907 if (*threadinfo
.more_display
)
2908 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2909 " Priority: %s", threadinfo
.more_display
);
2913 /* For purely cosmetic reasons, clear up trailing commas. */
2914 if (',' == display_buf
[n
-1])
2915 display_buf
[n
-1] = ' ';
2924 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2925 struct static_tracepoint_marker
*marker
)
2927 struct remote_state
*rs
= get_remote_state ();
2930 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2932 p
+= hexnumstr (p
, addr
);
2934 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2938 error (_("Remote failure reply: %s"), p
);
2942 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2949 static VEC(static_tracepoint_marker_p
) *
2950 remote_static_tracepoint_markers_by_strid (const char *strid
)
2952 struct remote_state
*rs
= get_remote_state ();
2953 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2954 struct static_tracepoint_marker
*marker
= NULL
;
2955 struct cleanup
*old_chain
;
2958 /* Ask for a first packet of static tracepoint marker
2961 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2964 error (_("Remote failure reply: %s"), p
);
2966 old_chain
= make_cleanup (free_current_marker
, &marker
);
2971 marker
= XCNEW (struct static_tracepoint_marker
);
2975 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2977 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2979 VEC_safe_push (static_tracepoint_marker_p
,
2985 release_static_tracepoint_marker (marker
);
2986 memset (marker
, 0, sizeof (*marker
));
2989 while (*p
++ == ','); /* comma-separated list */
2990 /* Ask for another packet of static tracepoint definition. */
2992 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2996 do_cleanups (old_chain
);
3001 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3004 remote_get_ada_task_ptid (long lwp
, long thread
)
3006 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
3010 /* Restart the remote side; this is an extended protocol operation. */
3013 extended_remote_restart (void)
3015 struct remote_state
*rs
= get_remote_state ();
3017 /* Send the restart command; for reasons I don't understand the
3018 remote side really expects a number after the "R". */
3019 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3022 remote_fileio_reset ();
3025 /* Clean up connection to a remote debugger. */
3030 if (remote_desc
== NULL
)
3031 return; /* already closed */
3033 /* Make sure we leave stdin registered in the event loop, and we
3034 don't leave the async SIGINT signal handler installed. */
3035 remote_terminal_ours ();
3037 serial_close (remote_desc
);
3040 /* We don't have a connection to the remote stub anymore. Get rid
3041 of all the inferiors and their threads we were controlling.
3042 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3043 will be unable to find the thread corresponding to (pid, 0, 0). */
3044 inferior_ptid
= null_ptid
;
3045 discard_all_inferiors ();
3047 /* Stop replies may from inferiors which are still unknown to GDB.
3048 We are closing the remote target, so we should discard
3049 everything, including the stop replies from GDB-unknown
3051 discard_pending_stop_replies (NULL
);
3053 if (remote_async_inferior_event_token
)
3054 delete_async_event_handler (&remote_async_inferior_event_token
);
3056 remote_notif_unregister_async_event_handler ();
3058 trace_reset_local_state ();
3061 /* Query the remote side for the text, data and bss offsets. */
3066 struct remote_state
*rs
= get_remote_state ();
3069 int lose
, num_segments
= 0, do_sections
, do_segments
;
3070 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3071 struct section_offsets
*offs
;
3072 struct symfile_segment_data
*data
;
3074 if (symfile_objfile
== NULL
)
3077 putpkt ("qOffsets");
3078 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3081 if (buf
[0] == '\000')
3082 return; /* Return silently. Stub doesn't support
3086 warning (_("Remote failure reply: %s"), buf
);
3090 /* Pick up each field in turn. This used to be done with scanf, but
3091 scanf will make trouble if CORE_ADDR size doesn't match
3092 conversion directives correctly. The following code will work
3093 with any size of CORE_ADDR. */
3094 text_addr
= data_addr
= bss_addr
= 0;
3098 if (strncmp (ptr
, "Text=", 5) == 0)
3101 /* Don't use strtol, could lose on big values. */
3102 while (*ptr
&& *ptr
!= ';')
3103 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3105 if (strncmp (ptr
, ";Data=", 6) == 0)
3108 while (*ptr
&& *ptr
!= ';')
3109 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3114 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3117 while (*ptr
&& *ptr
!= ';')
3118 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3120 if (bss_addr
!= data_addr
)
3121 warning (_("Target reported unsupported offsets: %s"), buf
);
3126 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3129 /* Don't use strtol, could lose on big values. */
3130 while (*ptr
&& *ptr
!= ';')
3131 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3134 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3137 while (*ptr
&& *ptr
!= ';')
3138 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3146 error (_("Malformed response to offset query, %s"), buf
);
3147 else if (*ptr
!= '\0')
3148 warning (_("Target reported unsupported offsets: %s"), buf
);
3150 offs
= ((struct section_offsets
*)
3151 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3152 memcpy (offs
, symfile_objfile
->section_offsets
,
3153 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3155 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3156 do_segments
= (data
!= NULL
);
3157 do_sections
= num_segments
== 0;
3159 if (num_segments
> 0)
3161 segments
[0] = text_addr
;
3162 segments
[1] = data_addr
;
3164 /* If we have two segments, we can still try to relocate everything
3165 by assuming that the .text and .data offsets apply to the whole
3166 text and data segments. Convert the offsets given in the packet
3167 to base addresses for symfile_map_offsets_to_segments. */
3168 else if (data
&& data
->num_segments
== 2)
3170 segments
[0] = data
->segment_bases
[0] + text_addr
;
3171 segments
[1] = data
->segment_bases
[1] + data_addr
;
3174 /* If the object file has only one segment, assume that it is text
3175 rather than data; main programs with no writable data are rare,
3176 but programs with no code are useless. Of course the code might
3177 have ended up in the data segment... to detect that we would need
3178 the permissions here. */
3179 else if (data
&& data
->num_segments
== 1)
3181 segments
[0] = data
->segment_bases
[0] + text_addr
;
3184 /* There's no way to relocate by segment. */
3190 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3191 offs
, num_segments
, segments
);
3193 if (ret
== 0 && !do_sections
)
3194 error (_("Can not handle qOffsets TextSeg "
3195 "response with this symbol file"));
3202 free_symfile_segment_data (data
);
3206 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3208 /* This is a temporary kludge to force data and bss to use the
3209 same offsets because that's what nlmconv does now. The real
3210 solution requires changes to the stub and remote.c that I
3211 don't have time to do right now. */
3213 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3214 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3217 objfile_relocate (symfile_objfile
, offs
);
3220 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3221 threads we know are stopped already. This is used during the
3222 initial remote connection in non-stop mode --- threads that are
3223 reported as already being stopped are left stopped. */
3226 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3228 /* If we have a stop reply for this thread, it must be stopped. */
3229 if (peek_stop_reply (thread
->ptid
))
3230 set_stop_requested (thread
->ptid
, 1);
3235 /* Send interrupt_sequence to remote target. */
3237 send_interrupt_sequence (void)
3239 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3240 remote_serial_write ("\x03", 1);
3241 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3242 serial_send_break (remote_desc
);
3243 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3245 serial_send_break (remote_desc
);
3246 remote_serial_write ("g", 1);
3249 internal_error (__FILE__
, __LINE__
,
3250 _("Invalid value for interrupt_sequence_mode: %s."),
3251 interrupt_sequence_mode
);
3255 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3256 and extract the PTID. Returns NULL_PTID if not found. */
3259 stop_reply_extract_thread (char *stop_reply
)
3261 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3265 /* Txx r:val ; r:val (...) */
3268 /* Look for "register" named "thread". */
3273 p1
= strchr (p
, ':');
3277 if (strncmp (p
, "thread", p1
- p
) == 0)
3278 return read_ptid (++p1
, &p
);
3280 p1
= strchr (p
, ';');
3292 /* Query the remote target for which is the current thread/process,
3293 add it to our tables, and update INFERIOR_PTID. The caller is
3294 responsible for setting the state such that the remote end is ready
3295 to return the current thread.
3297 This function is called after handling the '?' or 'vRun' packets,
3298 whose response is a stop reply from which we can also try
3299 extracting the thread. If the target doesn't support the explicit
3300 qC query, we infer the current thread from that stop reply, passed
3301 in in WAIT_STATUS, which may be NULL. */
3304 add_current_inferior_and_thread (char *wait_status
)
3306 struct remote_state
*rs
= get_remote_state ();
3308 ptid_t ptid
= null_ptid
;
3310 inferior_ptid
= null_ptid
;
3312 /* Now, if we have thread information, update inferior_ptid. First
3313 if we have a stop reply handy, maybe it's a T stop reply with a
3314 "thread" register we can extract the current thread from. If
3315 not, ask the remote which is the current thread, with qC. The
3316 former method avoids a roundtrip. Note we don't use
3317 remote_parse_stop_reply as that makes use of the target
3318 architecture, which we haven't yet fully determined at this
3320 if (wait_status
!= NULL
)
3321 ptid
= stop_reply_extract_thread (wait_status
);
3322 if (ptid_equal (ptid
, null_ptid
))
3323 ptid
= remote_current_thread (inferior_ptid
);
3325 if (!ptid_equal (ptid
, null_ptid
))
3327 if (!remote_multi_process_p (rs
))
3330 inferior_ptid
= ptid
;
3334 /* Without this, some commands which require an active target
3335 (such as kill) won't work. This variable serves (at least)
3336 double duty as both the pid of the target process (if it has
3337 such), and as a flag indicating that a target is active. */
3338 inferior_ptid
= magic_null_ptid
;
3342 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3344 /* Add the main thread. */
3345 add_thread_silent (inferior_ptid
);
3349 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3351 struct remote_state
*rs
= get_remote_state ();
3352 struct packet_config
*noack_config
;
3353 char *wait_status
= NULL
;
3355 immediate_quit
++; /* Allow user to interrupt it. */
3358 if (interrupt_on_connect
)
3359 send_interrupt_sequence ();
3361 /* Ack any packet which the remote side has already sent. */
3362 serial_write (remote_desc
, "+", 1);
3364 /* Signal other parts that we're going through the initial setup,
3365 and so things may not be stable yet. */
3366 rs
->starting_up
= 1;
3368 /* The first packet we send to the target is the optional "supported
3369 packets" request. If the target can answer this, it will tell us
3370 which later probes to skip. */
3371 remote_query_supported ();
3373 /* If the stub wants to get a QAllow, compose one and send it. */
3374 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3375 remote_set_permissions ();
3377 /* Next, we possibly activate noack mode.
3379 If the QStartNoAckMode packet configuration is set to AUTO,
3380 enable noack mode if the stub reported a wish for it with
3383 If set to TRUE, then enable noack mode even if the stub didn't
3384 report it in qSupported. If the stub doesn't reply OK, the
3385 session ends with an error.
3387 If FALSE, then don't activate noack mode, regardless of what the
3388 stub claimed should be the default with qSupported. */
3390 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3392 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3393 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3394 && noack_config
->support
== PACKET_ENABLE
))
3396 putpkt ("QStartNoAckMode");
3397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3398 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3404 /* Tell the remote that we are using the extended protocol. */
3406 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3409 /* Let the target know which signals it is allowed to pass down to
3411 update_signals_program_target ();
3413 /* Next, if the target can specify a description, read it. We do
3414 this before anything involving memory or registers. */
3415 target_find_description ();
3417 /* Next, now that we know something about the target, update the
3418 address spaces in the program spaces. */
3419 update_address_spaces ();
3421 /* On OSs where the list of libraries is global to all
3422 processes, we fetch them early. */
3423 if (gdbarch_has_global_solist (target_gdbarch ()))
3424 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3428 if (!rs
->non_stop_aware
)
3429 error (_("Non-stop mode requested, but remote "
3430 "does not support non-stop"));
3432 putpkt ("QNonStop:1");
3433 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3435 if (strcmp (rs
->buf
, "OK") != 0)
3436 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3438 /* Find about threads and processes the stub is already
3439 controlling. We default to adding them in the running state.
3440 The '?' query below will then tell us about which threads are
3442 remote_threads_info (target
);
3444 else if (rs
->non_stop_aware
)
3446 /* Don't assume that the stub can operate in all-stop mode.
3447 Request it explicitly. */
3448 putpkt ("QNonStop:0");
3449 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3451 if (strcmp (rs
->buf
, "OK") != 0)
3452 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3455 /* Check whether the target is running now. */
3457 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3463 struct inferior
*inf
;
3465 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3468 error (_("The target is not running (try extended-remote?)"));
3470 /* We're connected, but not running. Drop out before we
3471 call start_remote. */
3472 rs
->starting_up
= 0;
3477 /* Save the reply for later. */
3478 wait_status
= alloca (strlen (rs
->buf
) + 1);
3479 strcpy (wait_status
, rs
->buf
);
3482 /* Let the stub know that we want it to return the thread. */
3483 set_continue_thread (minus_one_ptid
);
3485 add_current_inferior_and_thread (wait_status
);
3487 /* init_wait_for_inferior should be called before get_offsets in order
3488 to manage `inserted' flag in bp loc in a correct state.
3489 breakpoint_init_inferior, called from init_wait_for_inferior, set
3490 `inserted' flag to 0, while before breakpoint_re_set, called from
3491 start_remote, set `inserted' flag to 1. In the initialization of
3492 inferior, breakpoint_init_inferior should be called first, and then
3493 breakpoint_re_set can be called. If this order is broken, state of
3494 `inserted' flag is wrong, and cause some problems on breakpoint
3496 init_wait_for_inferior ();
3498 get_offsets (); /* Get text, data & bss offsets. */
3500 /* If we could not find a description using qXfer, and we know
3501 how to do it some other way, try again. This is not
3502 supported for non-stop; it could be, but it is tricky if
3503 there are no stopped threads when we connect. */
3504 if (remote_read_description_p (target
)
3505 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3507 target_clear_description ();
3508 target_find_description ();
3511 /* Use the previously fetched status. */
3512 gdb_assert (wait_status
!= NULL
);
3513 strcpy (rs
->buf
, wait_status
);
3514 rs
->cached_wait_status
= 1;
3517 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3521 /* Clear WFI global state. Do this before finding about new
3522 threads and inferiors, and setting the current inferior.
3523 Otherwise we would clear the proceed status of the current
3524 inferior when we want its stop_soon state to be preserved
3525 (see notice_new_inferior). */
3526 init_wait_for_inferior ();
3528 /* In non-stop, we will either get an "OK", meaning that there
3529 are no stopped threads at this time; or, a regular stop
3530 reply. In the latter case, there may be more than one thread
3531 stopped --- we pull them all out using the vStopped
3533 if (strcmp (rs
->buf
, "OK") != 0)
3535 struct notif_client
*notif
= ¬if_client_stop
;
3537 /* remote_notif_get_pending_replies acks this one, and gets
3539 notif_client_stop
.pending_event
3540 = remote_notif_parse (notif
, rs
->buf
);
3541 remote_notif_get_pending_events (notif
);
3543 /* Make sure that threads that were stopped remain
3545 iterate_over_threads (set_stop_requested_callback
, NULL
);
3548 if (target_can_async_p ())
3549 target_async (inferior_event_handler
, 0);
3551 if (thread_count () == 0)
3554 error (_("The target is not running (try extended-remote?)"));
3556 /* We're connected, but not running. Drop out before we
3557 call start_remote. */
3558 rs
->starting_up
= 0;
3562 /* Let the stub know that we want it to return the thread. */
3564 /* Force the stub to choose a thread. */
3565 set_general_thread (null_ptid
);
3568 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3569 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3570 error (_("remote didn't report the current thread in non-stop mode"));
3572 get_offsets (); /* Get text, data & bss offsets. */
3574 /* In non-stop mode, any cached wait status will be stored in
3575 the stop reply queue. */
3576 gdb_assert (wait_status
== NULL
);
3578 /* Report all signals during attach/startup. */
3579 remote_pass_signals (0, NULL
);
3582 /* If we connected to a live target, do some additional setup. */
3583 if (target_has_execution
)
3585 if (exec_bfd
) /* No use without an exec file. */
3586 remote_check_symbols ();
3589 /* Possibly the target has been engaged in a trace run started
3590 previously; find out where things are at. */
3591 if (remote_get_trace_status (current_trace_status ()) != -1)
3593 struct uploaded_tp
*uploaded_tps
= NULL
;
3594 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3596 if (current_trace_status ()->running
)
3597 printf_filtered (_("Trace is already running on the target.\n"));
3599 /* Get trace state variables first, they may be checked when
3600 parsing uploaded commands. */
3602 remote_upload_trace_state_variables (&uploaded_tsvs
);
3604 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3606 remote_upload_tracepoints (&uploaded_tps
);
3608 merge_uploaded_tracepoints (&uploaded_tps
);
3611 /* The thread and inferior lists are now synchronized with the
3612 target, our symbols have been relocated, and we're merged the
3613 target's tracepoints with ours. We're done with basic start
3615 rs
->starting_up
= 0;
3617 /* If breakpoints are global, insert them now. */
3618 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3619 && breakpoints_always_inserted_mode ())
3620 insert_breakpoints ();
3623 /* Open a connection to a remote debugger.
3624 NAME is the filename used for communication. */
3627 remote_open (char *name
, int from_tty
)
3629 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3632 /* Open a connection to a remote debugger using the extended
3633 remote gdb protocol. NAME is the filename used for communication. */
3636 extended_remote_open (char *name
, int from_tty
)
3638 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3641 /* Generic code for opening a connection to a remote target. */
3644 init_all_packet_configs (void)
3648 for (i
= 0; i
< PACKET_MAX
; i
++)
3649 update_packet_config (&remote_protocol_packets
[i
]);
3652 /* Symbol look-up. */
3655 remote_check_symbols (void)
3657 struct remote_state
*rs
= get_remote_state ();
3658 char *msg
, *reply
, *tmp
;
3659 struct minimal_symbol
*sym
;
3662 /* The remote side has no concept of inferiors that aren't running
3663 yet, it only knows about running processes. If we're connected
3664 but our current inferior is not running, we should not invite the
3665 remote target to request symbol lookups related to its
3666 (unrelated) current process. */
3667 if (!target_has_execution
)
3670 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3673 /* Make sure the remote is pointing at the right process. Note
3674 there's no way to select "no process". */
3675 set_general_process ();
3677 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3678 because we need both at the same time. */
3679 msg
= alloca (get_remote_packet_size ());
3681 /* Invite target to request symbol lookups. */
3683 putpkt ("qSymbol::");
3684 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3685 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3688 while (strncmp (reply
, "qSymbol:", 8) == 0)
3691 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3693 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3695 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3698 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3699 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3701 /* If this is a function address, return the start of code
3702 instead of any data function descriptor. */
3703 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3707 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3708 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3712 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3717 static struct serial
*
3718 remote_serial_open (char *name
)
3720 static int udp_warning
= 0;
3722 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3723 of in ser-tcp.c, because it is the remote protocol assuming that the
3724 serial connection is reliable and not the serial connection promising
3726 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3728 warning (_("The remote protocol may be unreliable over UDP.\n"
3729 "Some events may be lost, rendering further debugging "
3734 return serial_open (name
);
3737 /* Inform the target of our permission settings. The permission flags
3738 work without this, but if the target knows the settings, it can do
3739 a couple things. First, it can add its own check, to catch cases
3740 that somehow manage to get by the permissions checks in target
3741 methods. Second, if the target is wired to disallow particular
3742 settings (for instance, a system in the field that is not set up to
3743 be able to stop at a breakpoint), it can object to any unavailable
3747 remote_set_permissions (void)
3749 struct remote_state
*rs
= get_remote_state ();
3751 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3752 "WriteReg:%x;WriteMem:%x;"
3753 "InsertBreak:%x;InsertTrace:%x;"
3754 "InsertFastTrace:%x;Stop:%x",
3755 may_write_registers
, may_write_memory
,
3756 may_insert_breakpoints
, may_insert_tracepoints
,
3757 may_insert_fast_tracepoints
, may_stop
);
3759 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3761 /* If the target didn't like the packet, warn the user. Do not try
3762 to undo the user's settings, that would just be maddening. */
3763 if (strcmp (rs
->buf
, "OK") != 0)
3764 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3767 /* This type describes each known response to the qSupported
3769 struct protocol_feature
3771 /* The name of this protocol feature. */
3774 /* The default for this protocol feature. */
3775 enum packet_support default_support
;
3777 /* The function to call when this feature is reported, or after
3778 qSupported processing if the feature is not supported.
3779 The first argument points to this structure. The second
3780 argument indicates whether the packet requested support be
3781 enabled, disabled, or probed (or the default, if this function
3782 is being called at the end of processing and this feature was
3783 not reported). The third argument may be NULL; if not NULL, it
3784 is a NUL-terminated string taken from the packet following
3785 this feature's name and an equals sign. */
3786 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3789 /* The corresponding packet for this feature. Only used if
3790 FUNC is remote_supported_packet. */
3795 remote_supported_packet (const struct protocol_feature
*feature
,
3796 enum packet_support support
,
3797 const char *argument
)
3801 warning (_("Remote qSupported response supplied an unexpected value for"
3802 " \"%s\"."), feature
->name
);
3806 if (remote_protocol_packets
[feature
->packet
].support
3807 == PACKET_SUPPORT_UNKNOWN
)
3808 remote_protocol_packets
[feature
->packet
].support
= support
;
3812 remote_packet_size (const struct protocol_feature
*feature
,
3813 enum packet_support support
, const char *value
)
3815 struct remote_state
*rs
= get_remote_state ();
3820 if (support
!= PACKET_ENABLE
)
3823 if (value
== NULL
|| *value
== '\0')
3825 warning (_("Remote target reported \"%s\" without a size."),
3831 packet_size
= strtol (value
, &value_end
, 16);
3832 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3834 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3835 feature
->name
, value
);
3839 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3841 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3842 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3843 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3846 /* Record the new maximum packet size. */
3847 rs
->explicit_packet_size
= packet_size
;
3851 remote_multi_process_feature (const struct protocol_feature
*feature
,
3852 enum packet_support support
, const char *value
)
3854 struct remote_state
*rs
= get_remote_state ();
3856 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3860 remote_non_stop_feature (const struct protocol_feature
*feature
,
3861 enum packet_support support
, const char *value
)
3863 struct remote_state
*rs
= get_remote_state ();
3865 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3869 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3870 enum packet_support support
,
3873 struct remote_state
*rs
= get_remote_state ();
3875 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3879 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3880 enum packet_support support
,
3883 struct remote_state
*rs
= get_remote_state ();
3885 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3889 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3890 enum packet_support support
,
3893 struct remote_state
*rs
= get_remote_state ();
3895 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3899 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3900 enum packet_support support
,
3903 struct remote_state
*rs
= get_remote_state ();
3905 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3909 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3910 enum packet_support support
,
3913 struct remote_state
*rs
= get_remote_state ();
3915 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3919 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3920 enum packet_support support
,
3923 struct remote_state
*rs
= get_remote_state ();
3925 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3929 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3930 enum packet_support support
,
3933 struct remote_state
*rs
= get_remote_state ();
3935 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3939 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3940 enum packet_support support
,
3943 struct remote_state
*rs
= get_remote_state ();
3945 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3949 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3950 enum packet_support support
,
3953 struct remote_state
*rs
= get_remote_state ();
3955 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3959 remote_augmented_libraries_svr4_read_feature
3960 (const struct protocol_feature
*feature
,
3961 enum packet_support support
, const char *value
)
3963 struct remote_state
*rs
= get_remote_state ();
3965 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3968 static struct protocol_feature remote_protocol_features
[] = {
3969 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3970 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3971 PACKET_qXfer_auxv
},
3972 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3973 PACKET_qXfer_features
},
3974 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3975 PACKET_qXfer_libraries
},
3976 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3977 PACKET_qXfer_libraries_svr4
},
3978 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3979 remote_augmented_libraries_svr4_read_feature
, -1 },
3980 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3981 PACKET_qXfer_memory_map
},
3982 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3983 PACKET_qXfer_spu_read
},
3984 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3985 PACKET_qXfer_spu_write
},
3986 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3987 PACKET_qXfer_osdata
},
3988 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3989 PACKET_qXfer_threads
},
3990 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3991 PACKET_qXfer_traceframe_info
},
3992 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3993 PACKET_QPassSignals
},
3994 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3995 PACKET_QProgramSignals
},
3996 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3997 PACKET_QStartNoAckMode
},
3998 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3999 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4000 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4001 PACKET_qXfer_siginfo_read
},
4002 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_qXfer_siginfo_write
},
4004 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4005 PACKET_ConditionalTracepoints
},
4006 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4007 PACKET_ConditionalBreakpoints
},
4008 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4009 PACKET_BreakpointCommands
},
4010 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4011 PACKET_FastTracepoints
},
4012 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4013 PACKET_StaticTracepoints
},
4014 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4015 PACKET_InstallInTrace
},
4016 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4018 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4020 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4022 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4023 PACKET_TracepointSource
},
4024 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4026 { "EnableDisableTracepoints", PACKET_DISABLE
,
4027 remote_enable_disable_tracepoint_feature
, -1 },
4028 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4029 PACKET_qXfer_fdpic
},
4030 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4032 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4033 PACKET_QDisableRandomization
},
4034 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4035 { "QTBuffer:size", PACKET_DISABLE
,
4036 remote_supported_packet
, PACKET_QTBuffer_size
},
4037 { "tracenz", PACKET_DISABLE
,
4038 remote_string_tracing_feature
, -1 },
4039 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4040 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4041 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4042 PACKET_qXfer_btrace
}
4045 static char *remote_support_xml
;
4047 /* Register string appended to "xmlRegisters=" in qSupported query. */
4050 register_remote_support_xml (const char *xml
)
4052 #if defined(HAVE_LIBEXPAT)
4053 if (remote_support_xml
== NULL
)
4054 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4057 char *copy
= xstrdup (remote_support_xml
+ 13);
4058 char *p
= strtok (copy
, ",");
4062 if (strcmp (p
, xml
) == 0)
4069 while ((p
= strtok (NULL
, ",")) != NULL
);
4072 remote_support_xml
= reconcat (remote_support_xml
,
4073 remote_support_xml
, ",", xml
,
4080 remote_query_supported_append (char *msg
, const char *append
)
4083 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4085 return xstrdup (append
);
4089 remote_query_supported (void)
4091 struct remote_state
*rs
= get_remote_state ();
4094 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4096 /* The packet support flags are handled differently for this packet
4097 than for most others. We treat an error, a disabled packet, and
4098 an empty response identically: any features which must be reported
4099 to be used will be automatically disabled. An empty buffer
4100 accomplishes this, since that is also the representation for a list
4101 containing no features. */
4104 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4107 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4109 q
= remote_query_supported_append (q
, "multiprocess+");
4111 if (remote_support_xml
)
4112 q
= remote_query_supported_append (q
, remote_support_xml
);
4114 q
= remote_query_supported_append (q
, "qRelocInsn+");
4116 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4119 do_cleanups (old_chain
);
4121 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4123 /* If an error occured, warn, but do not return - just reset the
4124 buffer to empty and go on to disable features. */
4125 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4128 warning (_("Remote failure reply: %s"), rs
->buf
);
4133 memset (seen
, 0, sizeof (seen
));
4138 enum packet_support is_supported
;
4139 char *p
, *end
, *name_end
, *value
;
4141 /* First separate out this item from the rest of the packet. If
4142 there's another item after this, we overwrite the separator
4143 (terminated strings are much easier to work with). */
4145 end
= strchr (p
, ';');
4148 end
= p
+ strlen (p
);
4158 warning (_("empty item in \"qSupported\" response"));
4163 name_end
= strchr (p
, '=');
4166 /* This is a name=value entry. */
4167 is_supported
= PACKET_ENABLE
;
4168 value
= name_end
+ 1;
4177 is_supported
= PACKET_ENABLE
;
4181 is_supported
= PACKET_DISABLE
;
4185 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4189 warning (_("unrecognized item \"%s\" "
4190 "in \"qSupported\" response"), p
);
4196 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4197 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4199 const struct protocol_feature
*feature
;
4202 feature
= &remote_protocol_features
[i
];
4203 feature
->func (feature
, is_supported
, value
);
4208 /* If we increased the packet size, make sure to increase the global
4209 buffer size also. We delay this until after parsing the entire
4210 qSupported packet, because this is the same buffer we were
4212 if (rs
->buf_size
< rs
->explicit_packet_size
)
4214 rs
->buf_size
= rs
->explicit_packet_size
;
4215 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4218 /* Handle the defaults for unmentioned features. */
4219 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4222 const struct protocol_feature
*feature
;
4224 feature
= &remote_protocol_features
[i
];
4225 feature
->func (feature
, feature
->default_support
, NULL
);
4229 /* Remove any of the remote.c targets from target stack. Upper targets depend
4230 on it so remove them first. */
4233 remote_unpush_target (void)
4235 pop_all_targets_above (process_stratum
- 1);
4239 remote_open_1 (char *name
, int from_tty
,
4240 struct target_ops
*target
, int extended_p
)
4242 struct remote_state
*rs
= get_remote_state ();
4245 error (_("To open a remote debug connection, you need to specify what\n"
4246 "serial device is attached to the remote system\n"
4247 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4249 /* See FIXME above. */
4250 if (!target_async_permitted
)
4251 wait_forever_enabled_p
= 1;
4253 /* If we're connected to a running target, target_preopen will kill it.
4254 Ask this question first, before target_preopen has a chance to kill
4256 if (remote_desc
!= NULL
&& !have_inferiors ())
4259 && !query (_("Already connected to a remote target. Disconnect? ")))
4260 error (_("Still connected."));
4263 /* Here the possibly existing remote target gets unpushed. */
4264 target_preopen (from_tty
);
4266 /* Make sure we send the passed signals list the next time we resume. */
4267 xfree (last_pass_packet
);
4268 last_pass_packet
= NULL
;
4270 /* Make sure we send the program signals list the next time we
4272 xfree (last_program_signals_packet
);
4273 last_program_signals_packet
= NULL
;
4275 remote_fileio_reset ();
4276 reopen_exec_file ();
4279 remote_desc
= remote_serial_open (name
);
4281 perror_with_name (name
);
4283 if (baud_rate
!= -1)
4285 if (serial_setbaudrate (remote_desc
, baud_rate
))
4287 /* The requested speed could not be set. Error out to
4288 top level after closing remote_desc. Take care to
4289 set remote_desc to NULL to avoid closing remote_desc
4291 serial_close (remote_desc
);
4293 perror_with_name (name
);
4297 serial_raw (remote_desc
);
4299 /* If there is something sitting in the buffer we might take it as a
4300 response to a command, which would be bad. */
4301 serial_flush_input (remote_desc
);
4305 puts_filtered ("Remote debugging using ");
4306 puts_filtered (name
);
4307 puts_filtered ("\n");
4309 push_target (target
); /* Switch to using remote target now. */
4311 /* Register extra event sources in the event loop. */
4312 remote_async_inferior_event_token
4313 = create_async_event_handler (remote_async_inferior_event_handler
,
4315 remote_notif_register_async_event_handler ();
4317 /* Reset the target state; these things will be queried either by
4318 remote_query_supported or as they are needed. */
4319 init_all_packet_configs ();
4320 rs
->cached_wait_status
= 0;
4321 rs
->explicit_packet_size
= 0;
4323 rs
->multi_process_aware
= 0;
4324 rs
->extended
= extended_p
;
4325 rs
->non_stop_aware
= 0;
4326 rs
->waiting_for_stop_reply
= 0;
4327 rs
->ctrlc_pending_p
= 0;
4329 general_thread
= not_sent_ptid
;
4330 continue_thread
= not_sent_ptid
;
4331 remote_traceframe_number
= -1;
4333 /* Probe for ability to use "ThreadInfo" query, as required. */
4334 use_threadinfo_query
= 1;
4335 use_threadextra_query
= 1;
4337 if (target_async_permitted
)
4339 /* With this target we start out by owning the terminal. */
4340 remote_async_terminal_ours_p
= 1;
4342 /* FIXME: cagney/1999-09-23: During the initial connection it is
4343 assumed that the target is already ready and able to respond to
4344 requests. Unfortunately remote_start_remote() eventually calls
4345 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4346 around this. Eventually a mechanism that allows
4347 wait_for_inferior() to expect/get timeouts will be
4349 wait_forever_enabled_p
= 0;
4352 /* First delete any symbols previously loaded from shared libraries. */
4353 no_shared_libraries (NULL
, 0);
4356 init_thread_list ();
4358 /* Start the remote connection. If error() or QUIT, discard this
4359 target (we'd otherwise be in an inconsistent state) and then
4360 propogate the error on up the exception chain. This ensures that
4361 the caller doesn't stumble along blindly assuming that the
4362 function succeeded. The CLI doesn't have this problem but other
4363 UI's, such as MI do.
4365 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4366 this function should return an error indication letting the
4367 caller restore the previous state. Unfortunately the command
4368 ``target remote'' is directly wired to this function making that
4369 impossible. On a positive note, the CLI side of this problem has
4370 been fixed - the function set_cmd_context() makes it possible for
4371 all the ``target ....'' commands to share a common callback
4372 function. See cli-dump.c. */
4374 volatile struct gdb_exception ex
;
4376 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4378 remote_start_remote (from_tty
, target
, extended_p
);
4382 /* Pop the partially set up target - unless something else did
4383 already before throwing the exception. */
4384 if (remote_desc
!= NULL
)
4385 remote_unpush_target ();
4386 if (target_async_permitted
)
4387 wait_forever_enabled_p
= 1;
4388 throw_exception (ex
);
4392 if (target_async_permitted
)
4393 wait_forever_enabled_p
= 1;
4396 /* This takes a program previously attached to and detaches it. After
4397 this is done, GDB can be used to debug some other program. We
4398 better not have left any breakpoints in the target program or it'll
4399 die when it hits one. */
4402 remote_detach_1 (char *args
, int from_tty
, int extended
)
4404 int pid
= ptid_get_pid (inferior_ptid
);
4405 struct remote_state
*rs
= get_remote_state ();
4408 error (_("Argument given to \"detach\" when remotely debugging."));
4410 if (!target_has_execution
)
4411 error (_("No process to detach from."));
4415 char *exec_file
= get_exec_file (0);
4416 if (exec_file
== NULL
)
4418 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4419 target_pid_to_str (pid_to_ptid (pid
)));
4420 gdb_flush (gdb_stdout
);
4423 /* Tell the remote target to detach. */
4424 if (remote_multi_process_p (rs
))
4425 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4427 strcpy (rs
->buf
, "D");
4430 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4432 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4434 else if (rs
->buf
[0] == '\0')
4435 error (_("Remote doesn't know how to detach"));
4437 error (_("Can't detach process."));
4439 if (from_tty
&& !extended
)
4440 puts_filtered (_("Ending remote debugging.\n"));
4442 target_mourn_inferior ();
4446 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4448 remote_detach_1 (args
, from_tty
, 0);
4452 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4454 remote_detach_1 (args
, from_tty
, 1);
4457 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4460 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4463 error (_("Argument given to \"disconnect\" when remotely debugging."));
4465 /* Make sure we unpush even the extended remote targets; mourn
4466 won't do it. So call remote_mourn_1 directly instead of
4467 target_mourn_inferior. */
4468 remote_mourn_1 (target
);
4471 puts_filtered ("Ending remote debugging.\n");
4474 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4475 be chatty about it. */
4478 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4480 struct remote_state
*rs
= get_remote_state ();
4482 char *wait_status
= NULL
;
4484 pid
= parse_pid_to_attach (args
);
4486 /* Remote PID can be freely equal to getpid, do not check it here the same
4487 way as in other targets. */
4489 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4490 error (_("This target does not support attaching to a process"));
4494 char *exec_file
= get_exec_file (0);
4497 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4498 target_pid_to_str (pid_to_ptid (pid
)));
4500 printf_unfiltered (_("Attaching to %s\n"),
4501 target_pid_to_str (pid_to_ptid (pid
)));
4503 gdb_flush (gdb_stdout
);
4506 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4508 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4510 if (packet_ok (rs
->buf
,
4511 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4515 /* Save the reply for later. */
4516 wait_status
= alloca (strlen (rs
->buf
) + 1);
4517 strcpy (wait_status
, rs
->buf
);
4519 else if (strcmp (rs
->buf
, "OK") != 0)
4520 error (_("Attaching to %s failed with: %s"),
4521 target_pid_to_str (pid_to_ptid (pid
)),
4524 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4525 error (_("This target does not support attaching to a process"));
4527 error (_("Attaching to %s failed"),
4528 target_pid_to_str (pid_to_ptid (pid
)));
4530 set_current_inferior (remote_add_inferior (0, pid
, 1));
4532 inferior_ptid
= pid_to_ptid (pid
);
4536 struct thread_info
*thread
;
4538 /* Get list of threads. */
4539 remote_threads_info (target
);
4541 thread
= first_thread_of_process (pid
);
4543 inferior_ptid
= thread
->ptid
;
4545 inferior_ptid
= pid_to_ptid (pid
);
4547 /* Invalidate our notion of the remote current thread. */
4548 record_currthread (minus_one_ptid
);
4552 /* Now, if we have thread information, update inferior_ptid. */
4553 inferior_ptid
= remote_current_thread (inferior_ptid
);
4555 /* Add the main thread to the thread list. */
4556 add_thread_silent (inferior_ptid
);
4559 /* Next, if the target can specify a description, read it. We do
4560 this before anything involving memory or registers. */
4561 target_find_description ();
4565 /* Use the previously fetched status. */
4566 gdb_assert (wait_status
!= NULL
);
4568 if (target_can_async_p ())
4570 struct notif_event
*reply
4571 = remote_notif_parse (¬if_client_stop
, wait_status
);
4573 push_stop_reply ((struct stop_reply
*) reply
);
4575 target_async (inferior_event_handler
, 0);
4579 gdb_assert (wait_status
!= NULL
);
4580 strcpy (rs
->buf
, wait_status
);
4581 rs
->cached_wait_status
= 1;
4585 gdb_assert (wait_status
== NULL
);
4589 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4591 extended_remote_attach_1 (ops
, args
, from_tty
);
4594 /* Convert hex digit A to a number. */
4599 if (a
>= '0' && a
<= '9')
4601 else if (a
>= 'a' && a
<= 'f')
4602 return a
- 'a' + 10;
4603 else if (a
>= 'A' && a
<= 'F')
4604 return a
- 'A' + 10;
4606 error (_("Reply contains invalid hex digit %d"), a
);
4610 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4614 for (i
= 0; i
< count
; i
++)
4616 if (hex
[0] == 0 || hex
[1] == 0)
4618 /* Hex string is short, or of uneven length.
4619 Return the count that has been converted so far. */
4622 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4628 /* Convert number NIB to a hex digit. */
4636 return 'a' + nib
- 10;
4640 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4644 /* May use a length, or a nul-terminated string as input. */
4646 count
= strlen ((char *) bin
);
4648 for (i
= 0; i
< count
; i
++)
4650 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4651 *hex
++ = tohex (*bin
++ & 0xf);
4657 /* Check for the availability of vCont. This function should also check
4661 remote_vcont_probe (struct remote_state
*rs
)
4665 strcpy (rs
->buf
, "vCont?");
4667 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4670 /* Make sure that the features we assume are supported. */
4671 if (strncmp (buf
, "vCont", 5) == 0)
4674 int support_s
, support_S
, support_c
, support_C
;
4680 rs
->supports_vCont
.t
= 0;
4681 rs
->supports_vCont
.r
= 0;
4682 while (p
&& *p
== ';')
4685 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4687 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4689 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4691 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4693 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4694 rs
->supports_vCont
.t
= 1;
4695 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4696 rs
->supports_vCont
.r
= 1;
4698 p
= strchr (p
, ';');
4701 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4702 BUF will make packet_ok disable the packet. */
4703 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4707 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4710 /* Helper function for building "vCont" resumptions. Write a
4711 resumption to P. ENDP points to one-passed-the-end of the buffer
4712 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4713 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4714 resumed thread should be single-stepped and/or signalled. If PTID
4715 equals minus_one_ptid, then all threads are resumed; if PTID
4716 represents a process, then all threads of the process are resumed;
4717 the thread to be stepped and/or signalled is given in the global
4721 append_resumption (char *p
, char *endp
,
4722 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4724 struct remote_state
*rs
= get_remote_state ();
4726 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4727 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4729 /* GDB is willing to range step. */
4730 && use_range_stepping
4731 /* Target supports range stepping. */
4732 && rs
->supports_vCont
.r
4733 /* We don't currently support range stepping multiple
4734 threads with a wildcard (though the protocol allows it,
4735 so stubs shouldn't make an active effort to forbid
4737 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4739 struct thread_info
*tp
;
4741 if (ptid_equal (ptid
, minus_one_ptid
))
4743 /* If we don't know about the target thread's tid, then
4744 we're resuming magic_null_ptid (see caller). */
4745 tp
= find_thread_ptid (magic_null_ptid
);
4748 tp
= find_thread_ptid (ptid
);
4749 gdb_assert (tp
!= NULL
);
4751 if (tp
->control
.may_range_step
)
4753 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4755 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4756 phex_nz (tp
->control
.step_range_start
,
4758 phex_nz (tp
->control
.step_range_end
,
4762 p
+= xsnprintf (p
, endp
- p
, ";s");
4765 p
+= xsnprintf (p
, endp
- p
, ";s");
4766 else if (siggnal
!= GDB_SIGNAL_0
)
4767 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4769 p
+= xsnprintf (p
, endp
- p
, ";c");
4771 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4775 /* All (-1) threads of process. */
4776 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4778 p
+= xsnprintf (p
, endp
- p
, ":");
4779 p
= write_ptid (p
, endp
, nptid
);
4781 else if (!ptid_equal (ptid
, minus_one_ptid
))
4783 p
+= xsnprintf (p
, endp
- p
, ":");
4784 p
= write_ptid (p
, endp
, ptid
);
4790 /* Append a vCont continue-with-signal action for threads that have a
4791 non-zero stop signal. */
4794 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4796 struct thread_info
*thread
;
4798 ALL_THREADS (thread
)
4799 if (ptid_match (thread
->ptid
, ptid
)
4800 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4801 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4802 && signal_pass_state (thread
->suspend
.stop_signal
))
4804 p
= append_resumption (p
, endp
, thread
->ptid
,
4805 0, thread
->suspend
.stop_signal
);
4806 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4812 /* Resume the remote inferior by using a "vCont" packet. The thread
4813 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4814 resumed thread should be single-stepped and/or signalled. If PTID
4815 equals minus_one_ptid, then all threads are resumed; the thread to
4816 be stepped and/or signalled is given in the global INFERIOR_PTID.
4817 This function returns non-zero iff it resumes the inferior.
4819 This function issues a strict subset of all possible vCont commands at the
4823 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4825 struct remote_state
*rs
= get_remote_state ();
4829 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4830 remote_vcont_probe (rs
);
4832 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4836 endp
= rs
->buf
+ get_remote_packet_size ();
4838 /* If we could generate a wider range of packets, we'd have to worry
4839 about overflowing BUF. Should there be a generic
4840 "multi-part-packet" packet? */
4842 p
+= xsnprintf (p
, endp
- p
, "vCont");
4844 if (ptid_equal (ptid
, magic_null_ptid
))
4846 /* MAGIC_NULL_PTID means that we don't have any active threads,
4847 so we don't have any TID numbers the inferior will
4848 understand. Make sure to only send forms that do not specify
4850 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4852 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4854 /* Resume all threads (of all processes, or of a single
4855 process), with preference for INFERIOR_PTID. This assumes
4856 inferior_ptid belongs to the set of all threads we are about
4858 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4860 /* Step inferior_ptid, with or without signal. */
4861 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4864 /* Also pass down any pending signaled resumption for other
4865 threads not the current. */
4866 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4868 /* And continue others without a signal. */
4869 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4873 /* Scheduler locking; resume only PTID. */
4874 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4877 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4882 /* In non-stop, the stub replies to vCont with "OK". The stop
4883 reply will be reported asynchronously by means of a `%Stop'
4885 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4886 if (strcmp (rs
->buf
, "OK") != 0)
4887 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4893 /* Tell the remote machine to resume. */
4895 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4897 static int last_sent_step
;
4900 remote_resume (struct target_ops
*ops
,
4901 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4903 struct remote_state
*rs
= get_remote_state ();
4906 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4907 (explained in remote-notif.c:handle_notification) so
4908 remote_notif_process is not called. We need find a place where
4909 it is safe to start a 'vNotif' sequence. It is good to do it
4910 before resuming inferior, because inferior was stopped and no RSP
4911 traffic at that moment. */
4913 remote_notif_process (¬if_client_stop
);
4915 last_sent_signal
= siggnal
;
4916 last_sent_step
= step
;
4918 /* The vCont packet doesn't need to specify threads via Hc. */
4919 /* No reverse support (yet) for vCont. */
4920 if (execution_direction
!= EXEC_REVERSE
)
4921 if (remote_vcont_resume (ptid
, step
, siggnal
))
4924 /* All other supported resume packets do use Hc, so set the continue
4926 if (ptid_equal (ptid
, minus_one_ptid
))
4927 set_continue_thread (any_thread_ptid
);
4929 set_continue_thread (ptid
);
4932 if (execution_direction
== EXEC_REVERSE
)
4934 /* We don't pass signals to the target in reverse exec mode. */
4935 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4936 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4940 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4941 error (_("Remote reverse-step not supported."));
4943 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4944 error (_("Remote reverse-continue not supported."));
4946 strcpy (buf
, step
? "bs" : "bc");
4948 else if (siggnal
!= GDB_SIGNAL_0
)
4950 buf
[0] = step
? 'S' : 'C';
4951 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4952 buf
[2] = tohex (((int) siggnal
) & 0xf);
4956 strcpy (buf
, step
? "s" : "c");
4961 /* We are about to start executing the inferior, let's register it
4962 with the event loop. NOTE: this is the one place where all the
4963 execution commands end up. We could alternatively do this in each
4964 of the execution commands in infcmd.c. */
4965 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4966 into infcmd.c in order to allow inferior function calls to work
4967 NOT asynchronously. */
4968 if (target_can_async_p ())
4969 target_async (inferior_event_handler
, 0);
4971 /* We've just told the target to resume. The remote server will
4972 wait for the inferior to stop, and then send a stop reply. In
4973 the mean time, we can't start another command/query ourselves
4974 because the stub wouldn't be ready to process it. This applies
4975 only to the base all-stop protocol, however. In non-stop (which
4976 only supports vCont), the stub replies with an "OK", and is
4977 immediate able to process further serial input. */
4979 rs
->waiting_for_stop_reply
= 1;
4983 /* Set up the signal handler for SIGINT, while the target is
4984 executing, ovewriting the 'regular' SIGINT signal handler. */
4986 initialize_sigint_signal_handler (void)
4988 signal (SIGINT
, handle_remote_sigint
);
4991 /* Signal handler for SIGINT, while the target is executing. */
4993 handle_remote_sigint (int sig
)
4995 signal (sig
, handle_remote_sigint_twice
);
4996 mark_async_signal_handler (sigint_remote_token
);
4999 /* Signal handler for SIGINT, installed after SIGINT has already been
5000 sent once. It will take effect the second time that the user sends
5003 handle_remote_sigint_twice (int sig
)
5005 signal (sig
, handle_remote_sigint
);
5006 mark_async_signal_handler (sigint_remote_twice_token
);
5009 /* Perform the real interruption of the target execution, in response
5012 async_remote_interrupt (gdb_client_data arg
)
5015 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5017 target_stop (inferior_ptid
);
5020 /* Perform interrupt, if the first attempt did not succeed. Just give
5021 up on the target alltogether. */
5023 async_remote_interrupt_twice (gdb_client_data arg
)
5026 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5031 /* Reinstall the usual SIGINT handlers, after the target has
5034 cleanup_sigint_signal_handler (void *dummy
)
5036 signal (SIGINT
, handle_sigint
);
5039 /* Send ^C to target to halt it. Target will respond, and send us a
5041 static void (*ofunc
) (int);
5043 /* The command line interface's stop routine. This function is installed
5044 as a signal handler for SIGINT. The first time a user requests a
5045 stop, we call remote_stop to send a break or ^C. If there is no
5046 response from the target (it didn't stop when the user requested it),
5047 we ask the user if he'd like to detach from the target. */
5049 remote_interrupt (int signo
)
5051 /* If this doesn't work, try more severe steps. */
5052 signal (signo
, remote_interrupt_twice
);
5054 gdb_call_async_signal_handler (sigint_remote_token
, 1);
5057 /* The user typed ^C twice. */
5060 remote_interrupt_twice (int signo
)
5062 signal (signo
, ofunc
);
5063 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
5064 signal (signo
, remote_interrupt
);
5067 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5068 thread, all threads of a remote process, or all threads of all
5072 remote_stop_ns (ptid_t ptid
)
5074 struct remote_state
*rs
= get_remote_state ();
5076 char *endp
= rs
->buf
+ get_remote_packet_size ();
5078 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5079 remote_vcont_probe (rs
);
5081 if (!rs
->supports_vCont
.t
)
5082 error (_("Remote server does not support stopping threads"));
5084 if (ptid_equal (ptid
, minus_one_ptid
)
5085 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5086 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5091 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5093 if (ptid_is_pid (ptid
))
5094 /* All (-1) threads of process. */
5095 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5098 /* Small optimization: if we already have a stop reply for
5099 this thread, no use in telling the stub we want this
5101 if (peek_stop_reply (ptid
))
5107 write_ptid (p
, endp
, nptid
);
5110 /* In non-stop, we get an immediate OK reply. The stop reply will
5111 come in asynchronously by notification. */
5113 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5114 if (strcmp (rs
->buf
, "OK") != 0)
5115 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5118 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5119 remote target. It is undefined which thread of which process
5120 reports the stop. */
5123 remote_stop_as (ptid_t ptid
)
5125 struct remote_state
*rs
= get_remote_state ();
5127 rs
->ctrlc_pending_p
= 1;
5129 /* If the inferior is stopped already, but the core didn't know
5130 about it yet, just ignore the request. The cached wait status
5131 will be collected in remote_wait. */
5132 if (rs
->cached_wait_status
)
5135 /* Send interrupt_sequence to remote target. */
5136 send_interrupt_sequence ();
5139 /* This is the generic stop called via the target vector. When a target
5140 interrupt is requested, either by the command line or the GUI, we
5141 will eventually end up here. */
5144 remote_stop (ptid_t ptid
)
5147 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5150 remote_stop_ns (ptid
);
5152 remote_stop_as (ptid
);
5155 /* Ask the user what to do when an interrupt is received. */
5158 interrupt_query (void)
5160 target_terminal_ours ();
5162 if (target_can_async_p ())
5164 signal (SIGINT
, handle_sigint
);
5165 deprecated_throw_reason (RETURN_QUIT
);
5169 if (query (_("Interrupted while waiting for the program.\n\
5170 Give up (and stop debugging it)? ")))
5172 remote_unpush_target ();
5173 deprecated_throw_reason (RETURN_QUIT
);
5177 target_terminal_inferior ();
5180 /* Enable/disable target terminal ownership. Most targets can use
5181 terminal groups to control terminal ownership. Remote targets are
5182 different in that explicit transfer of ownership to/from GDB/target
5186 remote_terminal_inferior (void)
5188 if (!target_async_permitted
)
5189 /* Nothing to do. */
5192 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5193 idempotent. The event-loop GDB talking to an asynchronous target
5194 with a synchronous command calls this function from both
5195 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5196 transfer the terminal to the target when it shouldn't this guard
5198 if (!remote_async_terminal_ours_p
)
5200 delete_file_handler (input_fd
);
5201 remote_async_terminal_ours_p
= 0;
5202 initialize_sigint_signal_handler ();
5203 /* NOTE: At this point we could also register our selves as the
5204 recipient of all input. Any characters typed could then be
5205 passed on down to the target. */
5209 remote_terminal_ours (void)
5211 if (!target_async_permitted
)
5212 /* Nothing to do. */
5215 /* See FIXME in remote_terminal_inferior. */
5216 if (remote_async_terminal_ours_p
)
5218 cleanup_sigint_signal_handler (NULL
);
5219 add_file_handler (input_fd
, stdin_event_handler
, 0);
5220 remote_async_terminal_ours_p
= 1;
5224 remote_console_output (char *msg
)
5228 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5231 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5235 fputs_unfiltered (tb
, gdb_stdtarg
);
5237 gdb_flush (gdb_stdtarg
);
5240 typedef struct cached_reg
5243 gdb_byte data
[MAX_REGISTER_SIZE
];
5246 DEF_VEC_O(cached_reg_t
);
5248 typedef struct stop_reply
5250 struct notif_event base
;
5252 /* The identifier of the thread about this event */
5255 struct target_waitstatus ws
;
5257 /* Expedited registers. This makes remote debugging a bit more
5258 efficient for those targets that provide critical registers as
5259 part of their normal status mechanism (as another roundtrip to
5260 fetch them is avoided). */
5261 VEC(cached_reg_t
) *regcache
;
5263 int stopped_by_watchpoint_p
;
5264 CORE_ADDR watch_data_address
;
5272 DECLARE_QUEUE_P (stop_reply_p
);
5273 DEFINE_QUEUE_P (stop_reply_p
);
5274 /* The list of already fetched and acknowledged stop events. This
5275 queue is used for notification Stop, and other notifications
5276 don't need queue for their events, because the notification events
5277 of Stop can't be consumed immediately, so that events should be
5278 queued first, and be consumed by remote_wait_{ns,as} one per
5279 time. Other notifications can consume their events immediately,
5280 so queue is not needed for them. */
5281 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5284 stop_reply_xfree (struct stop_reply
*r
)
5288 VEC_free (cached_reg_t
, r
->regcache
);
5294 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5295 struct notif_event
*event
)
5297 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5301 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5302 struct notif_event
*event
)
5304 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5307 putpkt ((char *) self
->ack_command
);
5309 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5310 /* We got an unknown stop reply. */
5311 error (_("Unknown stop reply"));
5313 push_stop_reply (stop_reply
);
5317 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5319 /* We can't get pending events in remote_notif_process for
5320 notification stop, and we have to do this in remote_wait_ns
5321 instead. If we fetch all queued events from stub, remote stub
5322 may exit and we have no chance to process them back in
5324 mark_async_event_handler (remote_async_inferior_event_token
);
5329 stop_reply_dtr (struct notif_event
*event
)
5331 struct stop_reply
*r
= (struct stop_reply
*) event
;
5333 VEC_free (cached_reg_t
, r
->regcache
);
5336 static struct notif_event
*
5337 remote_notif_stop_alloc_reply (void)
5339 struct notif_event
*r
5340 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5342 r
->dtr
= stop_reply_dtr
;
5347 /* A client of notification Stop. */
5349 struct notif_client notif_client_stop
=
5353 remote_notif_stop_parse
,
5354 remote_notif_stop_ack
,
5355 remote_notif_stop_can_get_pending_events
,
5356 remote_notif_stop_alloc_reply
,
5360 /* A parameter to pass data in and out. */
5362 struct queue_iter_param
5365 struct stop_reply
*output
;
5368 /* Remove all queue elements meet the condition it checks. */
5371 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5372 QUEUE_ITER (stop_reply_p
) *iter
,
5376 struct queue_iter_param
*param
= data
;
5377 struct inferior
*inf
= param
->input
;
5379 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5381 stop_reply_xfree (event
);
5382 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5388 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5389 discard everything. */
5392 discard_pending_stop_replies (struct inferior
*inf
)
5395 struct queue_iter_param param
;
5396 struct stop_reply
*reply
5397 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5399 /* Discard the in-flight notification. */
5402 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5404 stop_reply_xfree (reply
);
5405 notif_client_stop
.pending_event
= NULL
;
5409 param
.output
= NULL
;
5410 /* Discard the stop replies we have already pulled with
5412 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5413 remote_notif_remove_all
, ¶m
);
5416 /* A parameter to pass data in and out. */
5419 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5420 QUEUE_ITER (stop_reply_p
) *iter
,
5424 struct queue_iter_param
*param
= data
;
5425 ptid_t
*ptid
= param
->input
;
5427 if (ptid_match (event
->ptid
, *ptid
))
5429 param
->output
= event
;
5430 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5437 /* Remove the first reply in 'stop_reply_queue' which matches
5440 static struct stop_reply
*
5441 remote_notif_remove_queued_reply (ptid_t ptid
)
5443 struct queue_iter_param param
;
5445 param
.input
= &ptid
;
5446 param
.output
= NULL
;
5448 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5449 remote_notif_remove_once_on_match
, ¶m
);
5451 fprintf_unfiltered (gdb_stdlog
,
5452 "notif: discard queued event: 'Stop' in %s\n",
5453 target_pid_to_str (ptid
));
5455 return param
.output
;
5458 /* Look for a queued stop reply belonging to PTID. If one is found,
5459 remove it from the queue, and return it. Returns NULL if none is
5460 found. If there are still queued events left to process, tell the
5461 event loop to get back to target_wait soon. */
5463 static struct stop_reply
*
5464 queued_stop_reply (ptid_t ptid
)
5466 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5468 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5469 /* There's still at least an event left. */
5470 mark_async_event_handler (remote_async_inferior_event_token
);
5475 /* Push a fully parsed stop reply in the stop reply queue. Since we
5476 know that we now have at least one queued event left to pass to the
5477 core side, tell the event loop to get back to target_wait soon. */
5480 push_stop_reply (struct stop_reply
*new_event
)
5482 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5485 fprintf_unfiltered (gdb_stdlog
,
5486 "notif: push 'Stop' %s to queue %d\n",
5487 target_pid_to_str (new_event
->ptid
),
5488 QUEUE_length (stop_reply_p
,
5491 mark_async_event_handler (remote_async_inferior_event_token
);
5495 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5496 QUEUE_ITER (stop_reply_p
) *iter
,
5497 struct stop_reply
*event
,
5500 ptid_t
*ptid
= data
;
5502 return !(ptid_equal (*ptid
, event
->ptid
)
5503 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5506 /* Returns true if we have a stop reply for PTID. */
5509 peek_stop_reply (ptid_t ptid
)
5511 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5512 stop_reply_match_ptid_and_ws
, &ptid
);
5515 /* Parse the stop reply in BUF. Either the function succeeds, and the
5516 result is stored in EVENT, or throws an error. */
5519 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5521 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5525 event
->ptid
= null_ptid
;
5526 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5527 event
->ws
.value
.integer
= 0;
5528 event
->solibs_changed
= 0;
5529 event
->replay_event
= 0;
5530 event
->stopped_by_watchpoint_p
= 0;
5531 event
->regcache
= NULL
;
5536 case 'T': /* Status with PC, SP, FP, ... */
5537 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5538 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5540 n... = register number
5541 r... = register contents
5544 p
= &buf
[3]; /* after Txx */
5552 /* If the packet contains a register number, save it in
5553 pnum and set p1 to point to the character following it.
5554 Otherwise p1 points to p. */
5556 /* If this packet is an awatch packet, don't parse the 'a'
5557 as a register number. */
5559 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5560 && strncmp (p
, "core", strlen ("core") != 0))
5562 /* Read the ``P'' register number. */
5563 pnum
= strtol (p
, &p_temp
, 16);
5569 if (p1
== p
) /* No register number present here. */
5571 p1
= strchr (p
, ':');
5573 error (_("Malformed packet(a) (missing colon): %s\n\
5576 if (strncmp (p
, "thread", p1
- p
) == 0)
5577 event
->ptid
= read_ptid (++p1
, &p
);
5578 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5579 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5580 || (strncmp (p
, "awatch", p1
- p
) == 0))
5582 event
->stopped_by_watchpoint_p
= 1;
5583 p
= unpack_varlen_hex (++p1
, &addr
);
5584 event
->watch_data_address
= (CORE_ADDR
) addr
;
5586 else if (strncmp (p
, "library", p1
- p
) == 0)
5590 while (*p_temp
&& *p_temp
!= ';')
5593 event
->solibs_changed
= 1;
5596 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5598 /* NO_HISTORY event.
5599 p1 will indicate "begin" or "end", but
5600 it makes no difference for now, so ignore it. */
5601 event
->replay_event
= 1;
5602 p_temp
= strchr (p1
+ 1, ';');
5606 else if (strncmp (p
, "core", p1
- p
) == 0)
5610 p
= unpack_varlen_hex (++p1
, &c
);
5615 /* Silently skip unknown optional info. */
5616 p_temp
= strchr (p1
+ 1, ';');
5623 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5624 cached_reg_t cached_reg
;
5629 error (_("Malformed packet(b) (missing colon): %s\n\
5635 error (_("Remote sent bad register number %s: %s\n\
5637 hex_string (pnum
), p
, buf
);
5639 cached_reg
.num
= reg
->regnum
;
5641 fieldsize
= hex2bin (p
, cached_reg
.data
,
5642 register_size (target_gdbarch (),
5645 if (fieldsize
< register_size (target_gdbarch (),
5647 warning (_("Remote reply is too short: %s"), buf
);
5649 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5653 error (_("Remote register badly formatted: %s\nhere: %s"),
5658 case 'S': /* Old style status, just signal only. */
5659 if (event
->solibs_changed
)
5660 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5661 else if (event
->replay_event
)
5662 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5665 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5666 event
->ws
.value
.sig
= (enum gdb_signal
)
5667 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5670 case 'W': /* Target exited. */
5677 /* GDB used to accept only 2 hex chars here. Stubs should
5678 only send more if they detect GDB supports multi-process
5680 p
= unpack_varlen_hex (&buf
[1], &value
);
5684 /* The remote process exited. */
5685 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5686 event
->ws
.value
.integer
= value
;
5690 /* The remote process exited with a signal. */
5691 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5692 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5695 /* If no process is specified, assume inferior_ptid. */
5696 pid
= ptid_get_pid (inferior_ptid
);
5705 else if (strncmp (p
,
5706 "process:", sizeof ("process:") - 1) == 0)
5710 p
+= sizeof ("process:") - 1;
5711 unpack_varlen_hex (p
, &upid
);
5715 error (_("unknown stop reply packet: %s"), buf
);
5718 error (_("unknown stop reply packet: %s"), buf
);
5719 event
->ptid
= pid_to_ptid (pid
);
5724 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5725 error (_("No process or thread specified in stop reply: %s"), buf
);
5728 /* When the stub wants to tell GDB about a new notification reply, it
5729 sends a notification (%Stop, for example). Those can come it at
5730 any time, hence, we have to make sure that any pending
5731 putpkt/getpkt sequence we're making is finished, before querying
5732 the stub for more events with the corresponding ack command
5733 (vStopped, for example). E.g., if we started a vStopped sequence
5734 immediately upon receiving the notification, something like this
5742 1.6) <-- (registers reply to step #1.3)
5744 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5747 To solve this, whenever we parse a %Stop notification successfully,
5748 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5749 doing whatever we were doing:
5755 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5756 2.5) <-- (registers reply to step #2.3)
5758 Eventualy after step #2.5, we return to the event loop, which
5759 notices there's an event on the
5760 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5761 associated callback --- the function below. At this point, we're
5762 always safe to start a vStopped sequence. :
5765 2.7) <-- T05 thread:2
5771 remote_notif_get_pending_events (struct notif_client
*nc
)
5773 struct remote_state
*rs
= get_remote_state ();
5775 if (nc
->pending_event
)
5778 fprintf_unfiltered (gdb_stdlog
,
5779 "notif: process: '%s' ack pending event\n",
5783 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5784 nc
->pending_event
= NULL
;
5788 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5789 if (strcmp (rs
->buf
, "OK") == 0)
5792 remote_notif_ack (nc
, rs
->buf
);
5798 fprintf_unfiltered (gdb_stdlog
,
5799 "notif: process: '%s' no pending reply\n",
5804 /* Called when it is decided that STOP_REPLY holds the info of the
5805 event that is to be returned to the core. This function always
5806 destroys STOP_REPLY. */
5809 process_stop_reply (struct stop_reply
*stop_reply
,
5810 struct target_waitstatus
*status
)
5814 *status
= stop_reply
->ws
;
5815 ptid
= stop_reply
->ptid
;
5817 /* If no thread/process was reported by the stub, assume the current
5819 if (ptid_equal (ptid
, null_ptid
))
5820 ptid
= inferior_ptid
;
5822 if (status
->kind
!= TARGET_WAITKIND_EXITED
5823 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5825 /* Expedited registers. */
5826 if (stop_reply
->regcache
)
5828 struct regcache
*regcache
5829 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5834 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5836 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5837 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5840 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5841 remote_watch_data_address
= stop_reply
->watch_data_address
;
5843 remote_notice_new_inferior (ptid
, 0);
5844 demand_private_info (ptid
)->core
= stop_reply
->core
;
5847 stop_reply_xfree (stop_reply
);
5851 /* The non-stop mode version of target_wait. */
5854 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5856 struct remote_state
*rs
= get_remote_state ();
5857 struct stop_reply
*stop_reply
;
5861 /* If in non-stop mode, get out of getpkt even if a
5862 notification is received. */
5864 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5865 0 /* forever */, &is_notif
);
5868 if (ret
!= -1 && !is_notif
)
5871 case 'E': /* Error of some sort. */
5872 /* We're out of sync with the target now. Did it continue
5873 or not? We can't tell which thread it was in non-stop,
5874 so just ignore this. */
5875 warning (_("Remote failure reply: %s"), rs
->buf
);
5877 case 'O': /* Console output. */
5878 remote_console_output (rs
->buf
+ 1);
5881 warning (_("Invalid remote reply: %s"), rs
->buf
);
5885 /* Acknowledge a pending stop reply that may have arrived in the
5887 if (notif_client_stop
.pending_event
!= NULL
)
5888 remote_notif_get_pending_events (¬if_client_stop
);
5890 /* If indeed we noticed a stop reply, we're done. */
5891 stop_reply
= queued_stop_reply (ptid
);
5892 if (stop_reply
!= NULL
)
5893 return process_stop_reply (stop_reply
, status
);
5895 /* Still no event. If we're just polling for an event, then
5896 return to the event loop. */
5897 if (options
& TARGET_WNOHANG
)
5899 status
->kind
= TARGET_WAITKIND_IGNORE
;
5900 return minus_one_ptid
;
5903 /* Otherwise do a blocking wait. */
5904 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5905 1 /* forever */, &is_notif
);
5909 /* Wait until the remote machine stops, then return, storing status in
5910 STATUS just as `wait' would. */
5913 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5915 struct remote_state
*rs
= get_remote_state ();
5916 ptid_t event_ptid
= null_ptid
;
5918 struct stop_reply
*stop_reply
;
5922 status
->kind
= TARGET_WAITKIND_IGNORE
;
5923 status
->value
.integer
= 0;
5925 stop_reply
= queued_stop_reply (ptid
);
5926 if (stop_reply
!= NULL
)
5927 return process_stop_reply (stop_reply
, status
);
5929 if (rs
->cached_wait_status
)
5930 /* Use the cached wait status, but only once. */
5931 rs
->cached_wait_status
= 0;
5937 if (!target_is_async_p ())
5939 ofunc
= signal (SIGINT
, remote_interrupt
);
5940 /* If the user hit C-c before this packet, or between packets,
5941 pretend that it was hit right here. */
5942 if (check_quit_flag ())
5945 remote_interrupt (SIGINT
);
5949 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5950 _never_ wait for ever -> test on target_is_async_p().
5951 However, before we do that we need to ensure that the caller
5952 knows how to take the target into/out of async mode. */
5953 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5954 wait_forever_enabled_p
, &is_notif
);
5956 if (!target_is_async_p ())
5957 signal (SIGINT
, ofunc
);
5959 /* GDB gets a notification. Return to core as this event is
5961 if (ret
!= -1 && is_notif
)
5962 return minus_one_ptid
;
5967 remote_stopped_by_watchpoint_p
= 0;
5969 /* We got something. */
5970 rs
->waiting_for_stop_reply
= 0;
5972 /* Assume that the target has acknowledged Ctrl-C unless we receive
5973 an 'F' or 'O' packet. */
5974 if (buf
[0] != 'F' && buf
[0] != 'O')
5975 rs
->ctrlc_pending_p
= 0;
5979 case 'E': /* Error of some sort. */
5980 /* We're out of sync with the target now. Did it continue or
5981 not? Not is more likely, so report a stop. */
5982 warning (_("Remote failure reply: %s"), buf
);
5983 status
->kind
= TARGET_WAITKIND_STOPPED
;
5984 status
->value
.sig
= GDB_SIGNAL_0
;
5986 case 'F': /* File-I/O request. */
5987 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5988 rs
->ctrlc_pending_p
= 0;
5990 case 'T': case 'S': case 'X': case 'W':
5992 struct stop_reply
*stop_reply
5993 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5996 event_ptid
= process_stop_reply (stop_reply
, status
);
5999 case 'O': /* Console output. */
6000 remote_console_output (buf
+ 1);
6002 /* The target didn't really stop; keep waiting. */
6003 rs
->waiting_for_stop_reply
= 1;
6007 if (last_sent_signal
!= GDB_SIGNAL_0
)
6009 /* Zero length reply means that we tried 'S' or 'C' and the
6010 remote system doesn't support it. */
6011 target_terminal_ours_for_output ();
6013 ("Can't send signals to this remote system. %s not sent.\n",
6014 gdb_signal_to_name (last_sent_signal
));
6015 last_sent_signal
= GDB_SIGNAL_0
;
6016 target_terminal_inferior ();
6018 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
6019 putpkt ((char *) buf
);
6021 /* We just told the target to resume, so a stop reply is in
6023 rs
->waiting_for_stop_reply
= 1;
6026 /* else fallthrough */
6028 warning (_("Invalid remote reply: %s"), buf
);
6030 rs
->waiting_for_stop_reply
= 1;
6034 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6036 /* Nothing interesting happened. If we're doing a non-blocking
6037 poll, we're done. Otherwise, go back to waiting. */
6038 if (options
& TARGET_WNOHANG
)
6039 return minus_one_ptid
;
6043 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6044 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6046 if (!ptid_equal (event_ptid
, null_ptid
))
6047 record_currthread (event_ptid
);
6049 event_ptid
= inferior_ptid
;
6052 /* A process exit. Invalidate our notion of current thread. */
6053 record_currthread (minus_one_ptid
);
6058 /* Wait until the remote machine stops, then return, storing status in
6059 STATUS just as `wait' would. */
6062 remote_wait (struct target_ops
*ops
,
6063 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6068 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6070 event_ptid
= remote_wait_as (ptid
, status
, options
);
6072 if (target_can_async_p ())
6074 /* If there are are events left in the queue tell the event loop
6076 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6077 mark_async_event_handler (remote_async_inferior_event_token
);
6083 /* Fetch a single register using a 'p' packet. */
6086 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6088 struct remote_state
*rs
= get_remote_state ();
6090 char regp
[MAX_REGISTER_SIZE
];
6093 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6096 if (reg
->pnum
== -1)
6101 p
+= hexnumstr (p
, reg
->pnum
);
6104 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6108 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6112 case PACKET_UNKNOWN
:
6115 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6116 gdbarch_register_name (get_regcache_arch (regcache
),
6121 /* If this register is unfetchable, tell the regcache. */
6124 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6128 /* Otherwise, parse and supply the value. */
6134 error (_("fetch_register_using_p: early buf termination"));
6136 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6139 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6143 /* Fetch the registers included in the target's 'g' packet. */
6146 send_g_packet (void)
6148 struct remote_state
*rs
= get_remote_state ();
6151 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6152 remote_send (&rs
->buf
, &rs
->buf_size
);
6154 /* We can get out of synch in various cases. If the first character
6155 in the buffer is not a hex character, assume that has happened
6156 and try to fetch another packet to read. */
6157 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6158 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6159 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6160 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6163 fprintf_unfiltered (gdb_stdlog
,
6164 "Bad register packet; fetching a new packet\n");
6165 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6168 buf_len
= strlen (rs
->buf
);
6170 /* Sanity check the received packet. */
6171 if (buf_len
% 2 != 0)
6172 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6178 process_g_packet (struct regcache
*regcache
)
6180 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6181 struct remote_state
*rs
= get_remote_state ();
6182 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6187 buf_len
= strlen (rs
->buf
);
6189 /* Further sanity checks, with knowledge of the architecture. */
6190 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6191 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6193 /* Save the size of the packet sent to us by the target. It is used
6194 as a heuristic when determining the max size of packets that the
6195 target can safely receive. */
6196 if (rsa
->actual_register_packet_size
== 0)
6197 rsa
->actual_register_packet_size
= buf_len
;
6199 /* If this is smaller than we guessed the 'g' packet would be,
6200 update our records. A 'g' reply that doesn't include a register's
6201 value implies either that the register is not available, or that
6202 the 'p' packet must be used. */
6203 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6205 rsa
->sizeof_g_packet
= buf_len
/ 2;
6207 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6209 if (rsa
->regs
[i
].pnum
== -1)
6212 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6213 rsa
->regs
[i
].in_g_packet
= 0;
6215 rsa
->regs
[i
].in_g_packet
= 1;
6219 regs
= alloca (rsa
->sizeof_g_packet
);
6221 /* Unimplemented registers read as all bits zero. */
6222 memset (regs
, 0, rsa
->sizeof_g_packet
);
6224 /* Reply describes registers byte by byte, each byte encoded as two
6225 hex characters. Suck them all up, then supply them to the
6226 register cacheing/storage mechanism. */
6229 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6231 if (p
[0] == 0 || p
[1] == 0)
6232 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6233 internal_error (__FILE__
, __LINE__
,
6234 _("unexpected end of 'g' packet reply"));
6236 if (p
[0] == 'x' && p
[1] == 'x')
6237 regs
[i
] = 0; /* 'x' */
6239 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6243 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6245 struct packet_reg
*r
= &rsa
->regs
[i
];
6249 if (r
->offset
* 2 >= strlen (rs
->buf
))
6250 /* This shouldn't happen - we adjusted in_g_packet above. */
6251 internal_error (__FILE__
, __LINE__
,
6252 _("unexpected end of 'g' packet reply"));
6253 else if (rs
->buf
[r
->offset
* 2] == 'x')
6255 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6256 /* The register isn't available, mark it as such (at
6257 the same time setting the value to zero). */
6258 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6261 regcache_raw_supply (regcache
, r
->regnum
,
6268 fetch_registers_using_g (struct regcache
*regcache
)
6271 process_g_packet (regcache
);
6274 /* Make the remote selected traceframe match GDB's selected
6278 set_remote_traceframe (void)
6282 if (remote_traceframe_number
== get_traceframe_number ())
6285 /* Avoid recursion, remote_trace_find calls us again. */
6286 remote_traceframe_number
= get_traceframe_number ();
6288 newnum
= target_trace_find (tfind_number
,
6289 get_traceframe_number (), 0, 0, NULL
);
6291 /* Should not happen. If it does, all bets are off. */
6292 if (newnum
!= get_traceframe_number ())
6293 warning (_("could not set remote traceframe"));
6297 remote_fetch_registers (struct target_ops
*ops
,
6298 struct regcache
*regcache
, int regnum
)
6300 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6303 set_remote_traceframe ();
6304 set_general_thread (inferior_ptid
);
6308 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6310 gdb_assert (reg
!= NULL
);
6312 /* If this register might be in the 'g' packet, try that first -
6313 we are likely to read more than one register. If this is the
6314 first 'g' packet, we might be overly optimistic about its
6315 contents, so fall back to 'p'. */
6316 if (reg
->in_g_packet
)
6318 fetch_registers_using_g (regcache
);
6319 if (reg
->in_g_packet
)
6323 if (fetch_register_using_p (regcache
, reg
))
6326 /* This register is not available. */
6327 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6332 fetch_registers_using_g (regcache
);
6334 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6335 if (!rsa
->regs
[i
].in_g_packet
)
6336 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6338 /* This register is not available. */
6339 regcache_raw_supply (regcache
, i
, NULL
);
6343 /* Prepare to store registers. Since we may send them all (using a
6344 'G' request), we have to read out the ones we don't want to change
6348 remote_prepare_to_store (struct regcache
*regcache
)
6350 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6352 gdb_byte buf
[MAX_REGISTER_SIZE
];
6354 /* Make sure the entire registers array is valid. */
6355 switch (remote_protocol_packets
[PACKET_P
].support
)
6357 case PACKET_DISABLE
:
6358 case PACKET_SUPPORT_UNKNOWN
:
6359 /* Make sure all the necessary registers are cached. */
6360 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6361 if (rsa
->regs
[i
].in_g_packet
)
6362 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6369 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6370 packet was not recognized. */
6373 store_register_using_P (const struct regcache
*regcache
,
6374 struct packet_reg
*reg
)
6376 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6377 struct remote_state
*rs
= get_remote_state ();
6378 /* Try storing a single register. */
6379 char *buf
= rs
->buf
;
6380 gdb_byte regp
[MAX_REGISTER_SIZE
];
6383 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6386 if (reg
->pnum
== -1)
6389 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6390 p
= buf
+ strlen (buf
);
6391 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6392 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6394 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6396 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6401 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6402 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6403 case PACKET_UNKNOWN
:
6406 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6410 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6411 contents of the register cache buffer. FIXME: ignores errors. */
6414 store_registers_using_G (const struct regcache
*regcache
)
6416 struct remote_state
*rs
= get_remote_state ();
6417 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6421 /* Extract all the registers in the regcache copying them into a
6426 regs
= alloca (rsa
->sizeof_g_packet
);
6427 memset (regs
, 0, rsa
->sizeof_g_packet
);
6428 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6430 struct packet_reg
*r
= &rsa
->regs
[i
];
6433 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6437 /* Command describes registers byte by byte,
6438 each byte encoded as two hex characters. */
6441 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6443 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6445 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6446 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6447 error (_("Could not write registers; remote failure reply '%s'"),
6451 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6452 of the register cache buffer. FIXME: ignores errors. */
6455 remote_store_registers (struct target_ops
*ops
,
6456 struct regcache
*regcache
, int regnum
)
6458 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6461 set_remote_traceframe ();
6462 set_general_thread (inferior_ptid
);
6466 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6468 gdb_assert (reg
!= NULL
);
6470 /* Always prefer to store registers using the 'P' packet if
6471 possible; we often change only a small number of registers.
6472 Sometimes we change a larger number; we'd need help from a
6473 higher layer to know to use 'G'. */
6474 if (store_register_using_P (regcache
, reg
))
6477 /* For now, don't complain if we have no way to write the
6478 register. GDB loses track of unavailable registers too
6479 easily. Some day, this may be an error. We don't have
6480 any way to read the register, either... */
6481 if (!reg
->in_g_packet
)
6484 store_registers_using_G (regcache
);
6488 store_registers_using_G (regcache
);
6490 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6491 if (!rsa
->regs
[i
].in_g_packet
)
6492 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6493 /* See above for why we do not issue an error here. */
6498 /* Return the number of hex digits in num. */
6501 hexnumlen (ULONGEST num
)
6505 for (i
= 0; num
!= 0; i
++)
6511 /* Set BUF to the minimum number of hex digits representing NUM. */
6514 hexnumstr (char *buf
, ULONGEST num
)
6516 int len
= hexnumlen (num
);
6518 return hexnumnstr (buf
, num
, len
);
6522 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6525 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6531 for (i
= width
- 1; i
>= 0; i
--)
6533 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6540 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6543 remote_address_masked (CORE_ADDR addr
)
6545 unsigned int address_size
= remote_address_size
;
6547 /* If "remoteaddresssize" was not set, default to target address size. */
6549 address_size
= gdbarch_addr_bit (target_gdbarch ());
6551 if (address_size
> 0
6552 && address_size
< (sizeof (ULONGEST
) * 8))
6554 /* Only create a mask when that mask can safely be constructed
6555 in a ULONGEST variable. */
6558 mask
= (mask
<< address_size
) - 1;
6564 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6565 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6566 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6567 (which may be more than *OUT_LEN due to escape characters). The
6568 total number of bytes in the output buffer will be at most
6572 remote_escape_output (const gdb_byte
*buffer
, int len
,
6573 gdb_byte
*out_buf
, int *out_len
,
6576 int input_index
, output_index
;
6579 for (input_index
= 0; input_index
< len
; input_index
++)
6581 gdb_byte b
= buffer
[input_index
];
6583 if (b
== '$' || b
== '#' || b
== '}')
6585 /* These must be escaped. */
6586 if (output_index
+ 2 > out_maxlen
)
6588 out_buf
[output_index
++] = '}';
6589 out_buf
[output_index
++] = b
^ 0x20;
6593 if (output_index
+ 1 > out_maxlen
)
6595 out_buf
[output_index
++] = b
;
6599 *out_len
= input_index
;
6600 return output_index
;
6603 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6604 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6605 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6607 This function reverses remote_escape_output. It allows more
6608 escaped characters than that function does, in particular because
6609 '*' must be escaped to avoid the run-length encoding processing
6610 in reading packets. */
6613 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6614 gdb_byte
*out_buf
, int out_maxlen
)
6616 int input_index
, output_index
;
6621 for (input_index
= 0; input_index
< len
; input_index
++)
6623 gdb_byte b
= buffer
[input_index
];
6625 if (output_index
+ 1 > out_maxlen
)
6627 warning (_("Received too much data from remote target;"
6628 " ignoring overflow."));
6629 return output_index
;
6634 out_buf
[output_index
++] = b
^ 0x20;
6640 out_buf
[output_index
++] = b
;
6644 error (_("Unmatched escape character in target response."));
6646 return output_index
;
6649 /* Determine whether the remote target supports binary downloading.
6650 This is accomplished by sending a no-op memory write of zero length
6651 to the target at the specified address. It does not suffice to send
6652 the whole packet, since many stubs strip the eighth bit and
6653 subsequently compute a wrong checksum, which causes real havoc with
6656 NOTE: This can still lose if the serial line is not eight-bit
6657 clean. In cases like this, the user should clear "remote
6661 check_binary_download (CORE_ADDR addr
)
6663 struct remote_state
*rs
= get_remote_state ();
6665 switch (remote_protocol_packets
[PACKET_X
].support
)
6667 case PACKET_DISABLE
:
6671 case PACKET_SUPPORT_UNKNOWN
:
6677 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6679 p
+= hexnumstr (p
, (ULONGEST
) 0);
6683 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6684 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6686 if (rs
->buf
[0] == '\0')
6689 fprintf_unfiltered (gdb_stdlog
,
6690 "binary downloading NOT "
6691 "supported by target\n");
6692 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6697 fprintf_unfiltered (gdb_stdlog
,
6698 "binary downloading supported by target\n");
6699 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6706 /* Write memory data directly to the remote machine.
6707 This does not inform the data cache; the data cache uses this.
6708 HEADER is the starting part of the packet.
6709 MEMADDR is the address in the remote memory space.
6710 MYADDR is the address of the buffer in our space.
6711 LEN is the number of bytes.
6712 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6713 should send data as binary ('X'), or hex-encoded ('M').
6715 The function creates packet of the form
6716 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6718 where encoding of <DATA> is termined by PACKET_FORMAT.
6720 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6723 Returns the number of bytes transferred, or 0 (setting errno) for
6724 error. Only transfer a single packet. */
6727 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6728 const gdb_byte
*myaddr
, ssize_t len
,
6729 char packet_format
, int use_length
)
6731 struct remote_state
*rs
= get_remote_state ();
6741 if (packet_format
!= 'X' && packet_format
!= 'M')
6742 internal_error (__FILE__
, __LINE__
,
6743 _("remote_write_bytes_aux: bad packet format"));
6748 payload_size
= get_memory_write_packet_size ();
6750 /* The packet buffer will be large enough for the payload;
6751 get_memory_packet_size ensures this. */
6754 /* Compute the size of the actual payload by subtracting out the
6755 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6757 payload_size
-= strlen ("$,:#NN");
6759 /* The comma won't be used. */
6761 header_length
= strlen (header
);
6762 payload_size
-= header_length
;
6763 payload_size
-= hexnumlen (memaddr
);
6765 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6767 strcat (rs
->buf
, header
);
6768 p
= rs
->buf
+ strlen (header
);
6770 /* Compute a best guess of the number of bytes actually transfered. */
6771 if (packet_format
== 'X')
6773 /* Best guess at number of bytes that will fit. */
6774 todo
= min (len
, payload_size
);
6776 payload_size
-= hexnumlen (todo
);
6777 todo
= min (todo
, payload_size
);
6781 /* Num bytes that will fit. */
6782 todo
= min (len
, payload_size
/ 2);
6784 payload_size
-= hexnumlen (todo
);
6785 todo
= min (todo
, payload_size
/ 2);
6789 internal_error (__FILE__
, __LINE__
,
6790 _("minimum packet size too small to write data"));
6792 /* If we already need another packet, then try to align the end
6793 of this packet to a useful boundary. */
6794 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6795 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6797 /* Append "<memaddr>". */
6798 memaddr
= remote_address_masked (memaddr
);
6799 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6806 /* Append <len>. Retain the location/size of <len>. It may need to
6807 be adjusted once the packet body has been created. */
6809 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6817 /* Append the packet body. */
6818 if (packet_format
== 'X')
6820 /* Binary mode. Send target system values byte by byte, in
6821 increasing byte addresses. Only escape certain critical
6823 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6824 &nr_bytes
, payload_size
);
6826 /* If not all TODO bytes fit, then we'll need another packet. Make
6827 a second try to keep the end of the packet aligned. Don't do
6828 this if the packet is tiny. */
6829 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6833 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6835 if (new_nr_bytes
!= nr_bytes
)
6836 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6837 (gdb_byte
*) p
, &nr_bytes
,
6841 p
+= payload_length
;
6842 if (use_length
&& nr_bytes
< todo
)
6844 /* Escape chars have filled up the buffer prematurely,
6845 and we have actually sent fewer bytes than planned.
6846 Fix-up the length field of the packet. Use the same
6847 number of characters as before. */
6848 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6849 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6854 /* Normal mode: Send target system values byte by byte, in
6855 increasing byte addresses. Each byte is encoded as a two hex
6857 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6861 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6862 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6864 if (rs
->buf
[0] == 'E')
6866 /* There is no correspondance between what the remote protocol
6867 uses for errors and errno codes. We would like a cleaner way
6868 of representing errors (big enough to include errno codes,
6869 bfd_error codes, and others). But for now just return EIO. */
6874 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6875 fewer bytes than we'd planned. */
6879 /* Write memory data directly to the remote machine.
6880 This does not inform the data cache; the data cache uses this.
6881 MEMADDR is the address in the remote memory space.
6882 MYADDR is the address of the buffer in our space.
6883 LEN is the number of bytes.
6885 Returns number of bytes transferred, or 0 (setting errno) for
6886 error. Only transfer a single packet. */
6889 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6891 char *packet_format
= 0;
6893 /* Check whether the target supports binary download. */
6894 check_binary_download (memaddr
);
6896 switch (remote_protocol_packets
[PACKET_X
].support
)
6899 packet_format
= "X";
6901 case PACKET_DISABLE
:
6902 packet_format
= "M";
6904 case PACKET_SUPPORT_UNKNOWN
:
6905 internal_error (__FILE__
, __LINE__
,
6906 _("remote_write_bytes: bad internal state"));
6908 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6911 return remote_write_bytes_aux (packet_format
,
6912 memaddr
, myaddr
, len
, packet_format
[0], 1);
6915 /* Read memory data directly from the remote machine.
6916 This does not use the data cache; the data cache uses this.
6917 MEMADDR is the address in the remote memory space.
6918 MYADDR is the address of the buffer in our space.
6919 LEN is the number of bytes.
6921 Returns number of bytes transferred, or 0 for error. */
6924 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6926 struct remote_state
*rs
= get_remote_state ();
6927 int max_buf_size
; /* Max size of packet output buffer. */
6935 max_buf_size
= get_memory_read_packet_size ();
6936 /* The packet buffer will be large enough for the payload;
6937 get_memory_packet_size ensures this. */
6939 /* Number if bytes that will fit. */
6940 todo
= min (len
, max_buf_size
/ 2);
6942 /* Construct "m"<memaddr>","<len>". */
6943 memaddr
= remote_address_masked (memaddr
);
6946 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6948 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6951 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6952 if (rs
->buf
[0] == 'E'
6953 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6954 && rs
->buf
[3] == '\0')
6956 /* There is no correspondance between what the remote protocol
6957 uses for errors and errno codes. We would like a cleaner way
6958 of representing errors (big enough to include errno codes,
6959 bfd_error codes, and others). But for now just return
6964 /* Reply describes memory byte by byte, each byte encoded as two hex
6967 i
= hex2bin (p
, myaddr
, todo
);
6968 /* Return what we have. Let higher layers handle partial reads. */
6973 /* Read or write LEN bytes from inferior memory at MEMADDR,
6974 transferring to or from debugger address BUFFER. Write to inferior
6975 if SHOULD_WRITE is nonzero. Returns length of data written or
6976 read; 0 for error. TARGET is unused. */
6979 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6980 int should_write
, struct mem_attrib
*attrib
,
6981 struct target_ops
*target
)
6985 set_remote_traceframe ();
6986 set_general_thread (inferior_ptid
);
6989 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6991 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6996 /* Sends a packet with content determined by the printf format string
6997 FORMAT and the remaining arguments, then gets the reply. Returns
6998 whether the packet was a success, a failure, or unknown. */
7000 static enum packet_result
7001 remote_send_printf (const char *format
, ...)
7003 struct remote_state
*rs
= get_remote_state ();
7004 int max_size
= get_remote_packet_size ();
7007 va_start (ap
, format
);
7010 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7011 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7013 if (putpkt (rs
->buf
) < 0)
7014 error (_("Communication problem with target."));
7017 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7019 return packet_check_result (rs
->buf
);
7023 restore_remote_timeout (void *p
)
7025 int value
= *(int *)p
;
7027 remote_timeout
= value
;
7030 /* Flash writing can take quite some time. We'll set
7031 effectively infinite timeout for flash operations.
7032 In future, we'll need to decide on a better approach. */
7033 static const int remote_flash_timeout
= 1000;
7036 remote_flash_erase (struct target_ops
*ops
,
7037 ULONGEST address
, LONGEST length
)
7039 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7040 int saved_remote_timeout
= remote_timeout
;
7041 enum packet_result ret
;
7042 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7043 &saved_remote_timeout
);
7045 remote_timeout
= remote_flash_timeout
;
7047 ret
= remote_send_printf ("vFlashErase:%s,%s",
7048 phex (address
, addr_size
),
7052 case PACKET_UNKNOWN
:
7053 error (_("Remote target does not support flash erase"));
7055 error (_("Error erasing flash with vFlashErase packet"));
7060 do_cleanups (back_to
);
7064 remote_flash_write (struct target_ops
*ops
,
7065 ULONGEST address
, LONGEST length
,
7066 const gdb_byte
*data
)
7068 int saved_remote_timeout
= remote_timeout
;
7070 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7071 &saved_remote_timeout
);
7073 remote_timeout
= remote_flash_timeout
;
7074 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
7075 do_cleanups (back_to
);
7081 remote_flash_done (struct target_ops
*ops
)
7083 int saved_remote_timeout
= remote_timeout
;
7085 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7086 &saved_remote_timeout
);
7088 remote_timeout
= remote_flash_timeout
;
7089 ret
= remote_send_printf ("vFlashDone");
7090 do_cleanups (back_to
);
7094 case PACKET_UNKNOWN
:
7095 error (_("Remote target does not support vFlashDone"));
7097 error (_("Error finishing flash operation"));
7104 remote_files_info (struct target_ops
*ignore
)
7106 puts_filtered ("Debugging a target over a serial line.\n");
7109 /* Stuff for dealing with the packets which are part of this protocol.
7110 See comment at top of file for details. */
7112 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7113 error to higher layers. Called when a serial error is detected.
7114 The exception message is STRING, followed by a colon and a blank,
7115 the system error message for errno at function entry and final dot
7116 for output compatibility with throw_perror_with_name. */
7119 unpush_and_perror (const char *string
)
7121 int saved_errno
= errno
;
7123 remote_unpush_target ();
7124 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7125 safe_strerror (saved_errno
));
7128 /* Read a single character from the remote end. */
7131 readchar (int timeout
)
7135 ch
= serial_readchar (remote_desc
, timeout
);
7140 switch ((enum serial_rc
) ch
)
7143 remote_unpush_target ();
7144 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7147 unpush_and_perror (_("Remote communication error. "
7148 "Target disconnected."));
7150 case SERIAL_TIMEOUT
:
7156 /* Wrapper for serial_write that closes the target and throws if
7160 remote_serial_write (const char *str
, int len
)
7162 if (serial_write (remote_desc
, str
, len
))
7164 unpush_and_perror (_("Remote communication error. "
7165 "Target disconnected."));
7169 /* Send the command in *BUF to the remote machine, and read the reply
7170 into *BUF. Report an error if we get an error reply. Resize
7171 *BUF using xrealloc if necessary to hold the result, and update
7175 remote_send (char **buf
,
7179 getpkt (buf
, sizeof_buf
, 0);
7181 if ((*buf
)[0] == 'E')
7182 error (_("Remote failure reply: %s"), *buf
);
7185 /* Return a pointer to an xmalloc'ed string representing an escaped
7186 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7187 etc. The caller is responsible for releasing the returned
7191 escape_buffer (const char *buf
, int n
)
7193 struct cleanup
*old_chain
;
7194 struct ui_file
*stb
;
7197 stb
= mem_fileopen ();
7198 old_chain
= make_cleanup_ui_file_delete (stb
);
7200 fputstrn_unfiltered (buf
, n
, 0, stb
);
7201 str
= ui_file_xstrdup (stb
, NULL
);
7202 do_cleanups (old_chain
);
7206 /* Display a null-terminated packet on stdout, for debugging, using C
7210 print_packet (char *buf
)
7212 puts_filtered ("\"");
7213 fputstr_filtered (buf
, '"', gdb_stdout
);
7214 puts_filtered ("\"");
7220 return putpkt_binary (buf
, strlen (buf
));
7223 /* Send a packet to the remote machine, with error checking. The data
7224 of the packet is in BUF. The string in BUF can be at most
7225 get_remote_packet_size () - 5 to account for the $, # and checksum,
7226 and for a possible /0 if we are debugging (remote_debug) and want
7227 to print the sent packet as a string. */
7230 putpkt_binary (char *buf
, int cnt
)
7232 struct remote_state
*rs
= get_remote_state ();
7234 unsigned char csum
= 0;
7235 char *buf2
= alloca (cnt
+ 6);
7242 /* Catch cases like trying to read memory or listing threads while
7243 we're waiting for a stop reply. The remote server wouldn't be
7244 ready to handle this request, so we'd hang and timeout. We don't
7245 have to worry about this in synchronous mode, because in that
7246 case it's not possible to issue a command while the target is
7247 running. This is not a problem in non-stop mode, because in that
7248 case, the stub is always ready to process serial input. */
7249 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7250 error (_("Cannot execute this command while the target is running."));
7252 /* We're sending out a new packet. Make sure we don't look at a
7253 stale cached response. */
7254 rs
->cached_wait_status
= 0;
7256 /* Copy the packet into buffer BUF2, encapsulating it
7257 and giving it a checksum. */
7262 for (i
= 0; i
< cnt
; i
++)
7268 *p
++ = tohex ((csum
>> 4) & 0xf);
7269 *p
++ = tohex (csum
& 0xf);
7271 /* Send it over and over until we get a positive ack. */
7275 int started_error_output
= 0;
7279 struct cleanup
*old_chain
;
7283 str
= escape_buffer (buf2
, p
- buf2
);
7284 old_chain
= make_cleanup (xfree
, str
);
7285 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7286 gdb_flush (gdb_stdlog
);
7287 do_cleanups (old_chain
);
7289 remote_serial_write (buf2
, p
- buf2
);
7291 /* If this is a no acks version of the remote protocol, send the
7292 packet and move on. */
7296 /* Read until either a timeout occurs (-2) or '+' is read.
7297 Handle any notification that arrives in the mean time. */
7300 ch
= readchar (remote_timeout
);
7308 case SERIAL_TIMEOUT
:
7311 if (started_error_output
)
7313 putchar_unfiltered ('\n');
7314 started_error_output
= 0;
7323 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7327 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7329 case SERIAL_TIMEOUT
:
7333 break; /* Retransmit buffer. */
7337 fprintf_unfiltered (gdb_stdlog
,
7338 "Packet instead of Ack, ignoring it\n");
7339 /* It's probably an old response sent because an ACK
7340 was lost. Gobble up the packet and ack it so it
7341 doesn't get retransmitted when we resend this
7344 remote_serial_write ("+", 1);
7345 continue; /* Now, go look for +. */
7352 /* If we got a notification, handle it, and go back to looking
7354 /* We've found the start of a notification. Now
7355 collect the data. */
7356 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7361 struct cleanup
*old_chain
;
7364 str
= escape_buffer (rs
->buf
, val
);
7365 old_chain
= make_cleanup (xfree
, str
);
7366 fprintf_unfiltered (gdb_stdlog
,
7367 " Notification received: %s\n",
7369 do_cleanups (old_chain
);
7371 handle_notification (rs
->buf
);
7372 /* We're in sync now, rewait for the ack. */
7379 if (!started_error_output
)
7381 started_error_output
= 1;
7382 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7384 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7385 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7394 if (!started_error_output
)
7396 started_error_output
= 1;
7397 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7399 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7403 break; /* Here to retransmit. */
7407 /* This is wrong. If doing a long backtrace, the user should be
7408 able to get out next time we call QUIT, without anything as
7409 violent as interrupt_query. If we want to provide a way out of
7410 here without getting to the next QUIT, it should be based on
7411 hitting ^C twice as in remote_wait. */
7422 /* Come here after finding the start of a frame when we expected an
7423 ack. Do our best to discard the rest of this packet. */
7432 c
= readchar (remote_timeout
);
7435 case SERIAL_TIMEOUT
:
7436 /* Nothing we can do. */
7439 /* Discard the two bytes of checksum and stop. */
7440 c
= readchar (remote_timeout
);
7442 c
= readchar (remote_timeout
);
7445 case '*': /* Run length encoding. */
7446 /* Discard the repeat count. */
7447 c
= readchar (remote_timeout
);
7452 /* A regular character. */
7458 /* Come here after finding the start of the frame. Collect the rest
7459 into *BUF, verifying the checksum, length, and handling run-length
7460 compression. NUL terminate the buffer. If there is not enough room,
7461 expand *BUF using xrealloc.
7463 Returns -1 on error, number of characters in buffer (ignoring the
7464 trailing NULL) on success. (could be extended to return one of the
7465 SERIAL status indications). */
7468 read_frame (char **buf_p
,
7475 struct remote_state
*rs
= get_remote_state ();
7482 c
= readchar (remote_timeout
);
7485 case SERIAL_TIMEOUT
:
7487 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7491 fputs_filtered ("Saw new packet start in middle of old one\n",
7493 return -1; /* Start a new packet, count retries. */
7496 unsigned char pktcsum
;
7502 check_0
= readchar (remote_timeout
);
7504 check_1
= readchar (remote_timeout
);
7506 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7509 fputs_filtered ("Timeout in checksum, retrying\n",
7513 else if (check_0
< 0 || check_1
< 0)
7516 fputs_filtered ("Communication error in checksum\n",
7521 /* Don't recompute the checksum; with no ack packets we
7522 don't have any way to indicate a packet retransmission
7527 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7528 if (csum
== pktcsum
)
7533 struct cleanup
*old_chain
;
7536 str
= escape_buffer (buf
, bc
);
7537 old_chain
= make_cleanup (xfree
, str
);
7538 fprintf_unfiltered (gdb_stdlog
,
7539 "Bad checksum, sentsum=0x%x, "
7540 "csum=0x%x, buf=%s\n",
7541 pktcsum
, csum
, str
);
7542 do_cleanups (old_chain
);
7544 /* Number of characters in buffer ignoring trailing
7548 case '*': /* Run length encoding. */
7553 c
= readchar (remote_timeout
);
7555 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7557 /* The character before ``*'' is repeated. */
7559 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7561 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7563 /* Make some more room in the buffer. */
7564 *sizeof_buf
+= repeat
;
7565 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7569 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7575 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7579 if (bc
>= *sizeof_buf
- 1)
7581 /* Make some more room in the buffer. */
7583 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7594 /* Read a packet from the remote machine, with error checking, and
7595 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7596 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7597 rather than timing out; this is used (in synchronous mode) to wait
7598 for a target that is is executing user code to stop. */
7599 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7600 don't have to change all the calls to getpkt to deal with the
7601 return value, because at the moment I don't know what the right
7602 thing to do it for those. */
7610 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7614 /* Read a packet from the remote machine, with error checking, and
7615 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7616 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7617 rather than timing out; this is used (in synchronous mode) to wait
7618 for a target that is is executing user code to stop. If FOREVER ==
7619 0, this function is allowed to time out gracefully and return an
7620 indication of this to the caller. Otherwise return the number of
7621 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7622 enough reason to return to the caller. *IS_NOTIF is an output
7623 boolean that indicates whether *BUF holds a notification or not
7624 (a regular packet). */
7627 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7628 int expecting_notif
, int *is_notif
)
7630 struct remote_state
*rs
= get_remote_state ();
7636 /* We're reading a new response. Make sure we don't look at a
7637 previously cached response. */
7638 rs
->cached_wait_status
= 0;
7640 strcpy (*buf
, "timeout");
7643 timeout
= watchdog
> 0 ? watchdog
: -1;
7644 else if (expecting_notif
)
7645 timeout
= 0; /* There should already be a char in the buffer. If
7648 timeout
= remote_timeout
;
7652 /* Process any number of notifications, and then return when
7656 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7658 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7660 /* This can loop forever if the remote side sends us
7661 characters continuously, but if it pauses, we'll get
7662 SERIAL_TIMEOUT from readchar because of timeout. Then
7663 we'll count that as a retry.
7665 Note that even when forever is set, we will only wait
7666 forever prior to the start of a packet. After that, we
7667 expect characters to arrive at a brisk pace. They should
7668 show up within remote_timeout intervals. */
7670 c
= readchar (timeout
);
7671 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7673 if (c
== SERIAL_TIMEOUT
)
7675 if (expecting_notif
)
7676 return -1; /* Don't complain, it's normal to not get
7677 anything in this case. */
7679 if (forever
) /* Watchdog went off? Kill the target. */
7682 remote_unpush_target ();
7683 throw_error (TARGET_CLOSE_ERROR
,
7684 _("Watchdog timeout has expired. "
7685 "Target detached."));
7688 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7692 /* We've found the start of a packet or notification.
7693 Now collect the data. */
7694 val
= read_frame (buf
, sizeof_buf
);
7699 remote_serial_write ("-", 1);
7702 if (tries
> MAX_TRIES
)
7704 /* We have tried hard enough, and just can't receive the
7705 packet/notification. Give up. */
7706 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7708 /* Skip the ack char if we're in no-ack mode. */
7709 if (!rs
->noack_mode
)
7710 remote_serial_write ("+", 1);
7714 /* If we got an ordinary packet, return that to our caller. */
7719 struct cleanup
*old_chain
;
7722 str
= escape_buffer (*buf
, val
);
7723 old_chain
= make_cleanup (xfree
, str
);
7724 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7725 do_cleanups (old_chain
);
7728 /* Skip the ack char if we're in no-ack mode. */
7729 if (!rs
->noack_mode
)
7730 remote_serial_write ("+", 1);
7731 if (is_notif
!= NULL
)
7736 /* If we got a notification, handle it, and go back to looking
7740 gdb_assert (c
== '%');
7744 struct cleanup
*old_chain
;
7747 str
= escape_buffer (*buf
, val
);
7748 old_chain
= make_cleanup (xfree
, str
);
7749 fprintf_unfiltered (gdb_stdlog
,
7750 " Notification received: %s\n",
7752 do_cleanups (old_chain
);
7754 if (is_notif
!= NULL
)
7757 handle_notification (*buf
);
7759 /* Notifications require no acknowledgement. */
7761 if (expecting_notif
)
7768 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7770 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7774 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7777 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7782 /* A helper function that just calls putpkt; for type correctness. */
7785 putpkt_for_catch_errors (void *arg
)
7787 return putpkt (arg
);
7791 remote_kill (struct target_ops
*ops
)
7793 /* Use catch_errors so the user can quit from gdb even when we
7794 aren't on speaking terms with the remote system. */
7795 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7797 /* Don't wait for it to die. I'm not really sure it matters whether
7798 we do or not. For the existing stubs, kill is a noop. */
7799 target_mourn_inferior ();
7803 remote_vkill (int pid
, struct remote_state
*rs
)
7805 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7808 /* Tell the remote target to detach. */
7809 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7811 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7813 if (packet_ok (rs
->buf
,
7814 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7816 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7823 extended_remote_kill (struct target_ops
*ops
)
7826 int pid
= ptid_get_pid (inferior_ptid
);
7827 struct remote_state
*rs
= get_remote_state ();
7829 res
= remote_vkill (pid
, rs
);
7830 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7832 /* Don't try 'k' on a multi-process aware stub -- it has no way
7833 to specify the pid. */
7837 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7838 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7841 /* Don't wait for it to die. I'm not really sure it matters whether
7842 we do or not. For the existing stubs, kill is a noop. */
7848 error (_("Can't kill process"));
7850 target_mourn_inferior ();
7854 remote_mourn (struct target_ops
*ops
)
7856 remote_mourn_1 (ops
);
7859 /* Worker function for remote_mourn. */
7861 remote_mourn_1 (struct target_ops
*target
)
7863 unpush_target (target
);
7865 /* remote_close takes care of doing most of the clean up. */
7866 generic_mourn_inferior ();
7870 extended_remote_mourn_1 (struct target_ops
*target
)
7872 struct remote_state
*rs
= get_remote_state ();
7874 /* In case we got here due to an error, but we're going to stay
7876 rs
->waiting_for_stop_reply
= 0;
7878 /* If the current general thread belonged to the process we just
7879 detached from or has exited, the remote side current general
7880 thread becomes undefined. Considering a case like this:
7882 - We just got here due to a detach.
7883 - The process that we're detaching from happens to immediately
7884 report a global breakpoint being hit in non-stop mode, in the
7885 same thread we had selected before.
7886 - GDB attaches to this process again.
7887 - This event happens to be the next event we handle.
7889 GDB would consider that the current general thread didn't need to
7890 be set on the stub side (with Hg), since for all it knew,
7891 GENERAL_THREAD hadn't changed.
7893 Notice that although in all-stop mode, the remote server always
7894 sets the current thread to the thread reporting the stop event,
7895 that doesn't happen in non-stop mode; in non-stop, the stub *must
7896 not* change the current thread when reporting a breakpoint hit,
7897 due to the decoupling of event reporting and event handling.
7899 To keep things simple, we always invalidate our notion of the
7901 record_currthread (minus_one_ptid
);
7903 /* Unlike "target remote", we do not want to unpush the target; then
7904 the next time the user says "run", we won't be connected. */
7906 /* Call common code to mark the inferior as not running. */
7907 generic_mourn_inferior ();
7909 if (!have_inferiors ())
7911 if (!remote_multi_process_p (rs
))
7913 /* Check whether the target is running now - some remote stubs
7914 automatically restart after kill. */
7916 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7918 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7920 /* Assume that the target has been restarted. Set
7921 inferior_ptid so that bits of core GDB realizes
7922 there's something here, e.g., so that the user can
7923 say "kill" again. */
7924 inferior_ptid
= magic_null_ptid
;
7931 extended_remote_mourn (struct target_ops
*ops
)
7933 extended_remote_mourn_1 (ops
);
7937 extended_remote_supports_disable_randomization (void)
7939 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7944 extended_remote_disable_randomization (int val
)
7946 struct remote_state
*rs
= get_remote_state ();
7949 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7952 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7954 error (_("Target does not support QDisableRandomization."));
7955 if (strcmp (reply
, "OK") != 0)
7956 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7960 extended_remote_run (char *args
)
7962 struct remote_state
*rs
= get_remote_state ();
7965 /* If the user has disabled vRun support, or we have detected that
7966 support is not available, do not try it. */
7967 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7970 strcpy (rs
->buf
, "vRun;");
7971 len
= strlen (rs
->buf
);
7973 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7974 error (_("Remote file name too long for run packet"));
7975 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7977 gdb_assert (args
!= NULL
);
7980 struct cleanup
*back_to
;
7984 argv
= gdb_buildargv (args
);
7985 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7986 for (i
= 0; argv
[i
] != NULL
; i
++)
7988 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7989 error (_("Argument list too long for run packet"));
7990 rs
->buf
[len
++] = ';';
7991 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7993 do_cleanups (back_to
);
7996 rs
->buf
[len
++] = '\0';
7999 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8001 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
8003 /* We have a wait response. All is well. */
8006 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
8007 /* It wasn't disabled before, but it is now. */
8011 if (remote_exec_file
[0] == '\0')
8012 error (_("Running the default executable on the remote target failed; "
8013 "try \"set remote exec-file\"?"));
8015 error (_("Running \"%s\" on the remote target failed"),
8020 /* In the extended protocol we want to be able to do things like
8021 "run" and have them basically work as expected. So we need
8022 a special create_inferior function. We support changing the
8023 executable file and the command line arguments, but not the
8027 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
8028 char **env
, int from_tty
)
8032 struct remote_state
*rs
= get_remote_state ();
8034 /* If running asynchronously, register the target file descriptor
8035 with the event loop. */
8036 if (target_can_async_p ())
8037 target_async (inferior_event_handler
, 0);
8039 /* Disable address space randomization if requested (and supported). */
8040 if (extended_remote_supports_disable_randomization ())
8041 extended_remote_disable_randomization (disable_randomization
);
8043 /* Now restart the remote server. */
8044 run_worked
= extended_remote_run (args
) != -1;
8047 /* vRun was not supported. Fail if we need it to do what the
8049 if (remote_exec_file
[0])
8050 error (_("Remote target does not support \"set remote exec-file\""));
8052 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8054 /* Fall back to "R". */
8055 extended_remote_restart ();
8058 if (!have_inferiors ())
8060 /* Clean up from the last time we ran, before we mark the target
8061 running again. This will mark breakpoints uninserted, and
8062 get_offsets may insert breakpoints. */
8063 init_thread_list ();
8064 init_wait_for_inferior ();
8067 /* vRun's success return is a stop reply. */
8068 stop_reply
= run_worked
? rs
->buf
: NULL
;
8069 add_current_inferior_and_thread (stop_reply
);
8071 /* Get updated offsets, if the stub uses qOffsets. */
8076 extended_remote_create_inferior (struct target_ops
*ops
,
8077 char *exec_file
, char *args
,
8078 char **env
, int from_tty
)
8080 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
8084 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8085 the list of conditions (in agent expression bytecode format), if any, the
8086 target needs to evaluate. The output is placed into the packet buffer
8087 started from BUF and ended at BUF_END. */
8090 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8091 struct bp_target_info
*bp_tgt
, char *buf
,
8094 struct agent_expr
*aexpr
= NULL
;
8097 char *buf_start
= buf
;
8099 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8102 buf
+= strlen (buf
);
8103 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8106 /* Send conditions to the target and free the vector. */
8108 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8111 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8112 buf
+= strlen (buf
);
8113 for (i
= 0; i
< aexpr
->len
; ++i
)
8114 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8118 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8123 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8124 struct bp_target_info
*bp_tgt
, char *buf
)
8126 struct agent_expr
*aexpr
= NULL
;
8129 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8132 buf
+= strlen (buf
);
8134 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8135 buf
+= strlen (buf
);
8137 /* Concatenate all the agent expressions that are commands into the
8140 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8143 sprintf (buf
, "X%x,", aexpr
->len
);
8144 buf
+= strlen (buf
);
8145 for (i
= 0; i
< aexpr
->len
; ++i
)
8146 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8150 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8153 /* Insert a breakpoint. On targets that have software breakpoint
8154 support, we ask the remote target to do the work; on targets
8155 which don't, we insert a traditional memory breakpoint. */
8158 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8159 struct bp_target_info
*bp_tgt
)
8161 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8162 If it succeeds, then set the support to PACKET_ENABLE. If it
8163 fails, and the user has explicitly requested the Z support then
8164 report an error, otherwise, mark it disabled and go on. */
8166 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8168 CORE_ADDR addr
= bp_tgt
->placed_address
;
8169 struct remote_state
*rs
;
8172 struct condition_list
*cond
= NULL
;
8174 /* Make sure the remote is pointing at the right process, if
8176 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8177 set_general_process ();
8179 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8181 rs
= get_remote_state ();
8183 endbuf
= rs
->buf
+ get_remote_packet_size ();
8188 addr
= (ULONGEST
) remote_address_masked (addr
);
8189 p
+= hexnumstr (p
, addr
);
8190 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8192 if (remote_supports_cond_breakpoints ())
8193 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8195 if (remote_can_run_breakpoint_commands ())
8196 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8199 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8201 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8206 bp_tgt
->placed_address
= addr
;
8207 bp_tgt
->placed_size
= bpsize
;
8209 case PACKET_UNKNOWN
:
8214 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8218 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8219 struct bp_target_info
*bp_tgt
)
8221 CORE_ADDR addr
= bp_tgt
->placed_address
;
8222 struct remote_state
*rs
= get_remote_state ();
8224 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8227 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8229 /* Make sure the remote is pointing at the right process, if
8231 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8232 set_general_process ();
8238 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8239 p
+= hexnumstr (p
, addr
);
8240 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8243 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8245 return (rs
->buf
[0] == 'E');
8248 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8252 watchpoint_to_Z_packet (int type
)
8257 return Z_PACKET_WRITE_WP
;
8260 return Z_PACKET_READ_WP
;
8263 return Z_PACKET_ACCESS_WP
;
8266 internal_error (__FILE__
, __LINE__
,
8267 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8272 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8273 struct expression
*cond
)
8275 struct remote_state
*rs
= get_remote_state ();
8276 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8278 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8280 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8283 /* Make sure the remote is pointing at the right process, if
8285 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8286 set_general_process ();
8288 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8289 p
= strchr (rs
->buf
, '\0');
8290 addr
= remote_address_masked (addr
);
8291 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8292 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8295 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8297 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8301 case PACKET_UNKNOWN
:
8306 internal_error (__FILE__
, __LINE__
,
8307 _("remote_insert_watchpoint: reached end of function"));
8311 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8312 CORE_ADDR start
, int length
)
8314 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8316 return diff
< length
;
8321 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8322 struct expression
*cond
)
8324 struct remote_state
*rs
= get_remote_state ();
8325 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8327 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8329 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8332 /* Make sure the remote is pointing at the right process, if
8334 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8335 set_general_process ();
8337 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8338 p
= strchr (rs
->buf
, '\0');
8339 addr
= remote_address_masked (addr
);
8340 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8341 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8343 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8345 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8348 case PACKET_UNKNOWN
:
8353 internal_error (__FILE__
, __LINE__
,
8354 _("remote_remove_watchpoint: reached end of function"));
8358 int remote_hw_watchpoint_limit
= -1;
8359 int remote_hw_watchpoint_length_limit
= -1;
8360 int remote_hw_breakpoint_limit
= -1;
8363 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8365 if (remote_hw_watchpoint_length_limit
== 0)
8367 else if (remote_hw_watchpoint_length_limit
< 0)
8369 else if (len
<= remote_hw_watchpoint_length_limit
)
8376 remote_check_watch_resources (int type
, int cnt
, int ot
)
8378 if (type
== bp_hardware_breakpoint
)
8380 if (remote_hw_breakpoint_limit
== 0)
8382 else if (remote_hw_breakpoint_limit
< 0)
8384 else if (cnt
<= remote_hw_breakpoint_limit
)
8389 if (remote_hw_watchpoint_limit
== 0)
8391 else if (remote_hw_watchpoint_limit
< 0)
8395 else if (cnt
<= remote_hw_watchpoint_limit
)
8402 remote_stopped_by_watchpoint (void)
8404 return remote_stopped_by_watchpoint_p
;
8408 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8412 if (remote_stopped_by_watchpoint ())
8414 *addr_p
= remote_watch_data_address
;
8423 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8424 struct bp_target_info
*bp_tgt
)
8427 struct remote_state
*rs
;
8431 /* The length field should be set to the size of a breakpoint
8432 instruction, even though we aren't inserting one ourselves. */
8434 gdbarch_remote_breakpoint_from_pc
8435 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8437 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8440 /* Make sure the remote is pointing at the right process, if
8442 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8443 set_general_process ();
8445 rs
= get_remote_state ();
8447 endbuf
= rs
->buf
+ get_remote_packet_size ();
8453 addr
= remote_address_masked (bp_tgt
->placed_address
);
8454 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8455 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8457 if (remote_supports_cond_breakpoints ())
8458 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8460 if (remote_can_run_breakpoint_commands ())
8461 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8464 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8466 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8469 if (rs
->buf
[1] == '.')
8471 message
= strchr (rs
->buf
+ 2, '.');
8473 error (_("Remote failure reply: %s"), message
+ 1);
8476 case PACKET_UNKNOWN
:
8481 internal_error (__FILE__
, __LINE__
,
8482 _("remote_insert_hw_breakpoint: reached end of function"));
8487 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8488 struct bp_target_info
*bp_tgt
)
8491 struct remote_state
*rs
= get_remote_state ();
8493 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8495 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8498 /* Make sure the remote is pointing at the right process, if
8500 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8501 set_general_process ();
8507 addr
= remote_address_masked (bp_tgt
->placed_address
);
8508 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8509 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8512 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8514 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8517 case PACKET_UNKNOWN
:
8522 internal_error (__FILE__
, __LINE__
,
8523 _("remote_remove_hw_breakpoint: reached end of function"));
8526 /* Table used by the crc32 function to calcuate the checksum. */
8528 static unsigned long crc32_table
[256] =
8531 static unsigned long
8532 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8534 if (!crc32_table
[1])
8536 /* Initialize the CRC table and the decoding table. */
8540 for (i
= 0; i
< 256; i
++)
8542 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8543 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8550 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8556 /* Verify memory using the "qCRC:" request. */
8559 remote_verify_memory (struct target_ops
*ops
,
8560 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8562 struct remote_state
*rs
= get_remote_state ();
8563 unsigned long host_crc
, target_crc
;
8566 /* Make sure the remote is pointing at the right process. */
8567 set_general_process ();
8569 /* FIXME: assumes lma can fit into long. */
8570 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8571 (long) lma
, (long) size
);
8574 /* Be clever; compute the host_crc before waiting for target
8576 host_crc
= crc32 (data
, size
, 0xffffffff);
8578 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8579 if (rs
->buf
[0] == 'E')
8582 if (rs
->buf
[0] != 'C')
8583 error (_("remote target does not support this operation"));
8585 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8586 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8588 return (host_crc
== target_crc
);
8591 /* compare-sections command
8593 With no arguments, compares each loadable section in the exec bfd
8594 with the same memory range on the target, and reports mismatches.
8595 Useful for verifying the image on the target against the exec file. */
8598 compare_sections_command (char *args
, int from_tty
)
8601 struct cleanup
*old_chain
;
8603 const char *sectname
;
8611 error (_("command cannot be used without an exec file"));
8613 /* Make sure the remote is pointing at the right process. */
8614 set_general_process ();
8616 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8618 if (!(s
->flags
& SEC_LOAD
))
8619 continue; /* Skip non-loadable section. */
8621 size
= bfd_get_section_size (s
);
8623 continue; /* Skip zero-length section. */
8625 sectname
= bfd_get_section_name (exec_bfd
, s
);
8626 if (args
&& strcmp (args
, sectname
) != 0)
8627 continue; /* Not the section selected by user. */
8629 matched
= 1; /* Do this section. */
8632 sectdata
= xmalloc (size
);
8633 old_chain
= make_cleanup (xfree
, sectdata
);
8634 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8636 res
= target_verify_memory (sectdata
, lma
, size
);
8639 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8640 paddress (target_gdbarch (), lma
),
8641 paddress (target_gdbarch (), lma
+ size
));
8643 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8644 paddress (target_gdbarch (), lma
),
8645 paddress (target_gdbarch (), lma
+ size
));
8647 printf_filtered ("matched.\n");
8650 printf_filtered ("MIS-MATCHED!\n");
8654 do_cleanups (old_chain
);
8657 warning (_("One or more sections of the remote executable does not match\n\
8658 the loaded file\n"));
8659 if (args
&& !matched
)
8660 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8663 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8664 into remote target. The number of bytes written to the remote
8665 target is returned, or -1 for error. */
8668 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8669 const char *annex
, const gdb_byte
*writebuf
,
8670 ULONGEST offset
, LONGEST len
,
8671 struct packet_config
*packet
)
8675 struct remote_state
*rs
= get_remote_state ();
8676 int max_size
= get_memory_write_packet_size ();
8678 if (packet
->support
== PACKET_DISABLE
)
8681 /* Insert header. */
8682 i
= snprintf (rs
->buf
, max_size
,
8683 "qXfer:%s:write:%s:%s:",
8684 object_name
, annex
? annex
: "",
8685 phex_nz (offset
, sizeof offset
));
8686 max_size
-= (i
+ 1);
8688 /* Escape as much data as fits into rs->buf. */
8689 buf_len
= remote_escape_output
8690 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8692 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8693 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8694 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8697 unpack_varlen_hex (rs
->buf
, &n
);
8701 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8702 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8703 number of bytes read is returned, or 0 for EOF, or -1 for error.
8704 The number of bytes read may be less than LEN without indicating an
8705 EOF. PACKET is checked and updated to indicate whether the remote
8706 target supports this object. */
8709 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8711 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8712 struct packet_config
*packet
)
8714 static char *finished_object
;
8715 static char *finished_annex
;
8716 static ULONGEST finished_offset
;
8718 struct remote_state
*rs
= get_remote_state ();
8719 LONGEST i
, n
, packet_len
;
8721 if (packet
->support
== PACKET_DISABLE
)
8724 /* Check whether we've cached an end-of-object packet that matches
8726 if (finished_object
)
8728 if (strcmp (object_name
, finished_object
) == 0
8729 && strcmp (annex
? annex
: "", finished_annex
) == 0
8730 && offset
== finished_offset
)
8733 /* Otherwise, we're now reading something different. Discard
8735 xfree (finished_object
);
8736 xfree (finished_annex
);
8737 finished_object
= NULL
;
8738 finished_annex
= NULL
;
8741 /* Request only enough to fit in a single packet. The actual data
8742 may not, since we don't know how much of it will need to be escaped;
8743 the target is free to respond with slightly less data. We subtract
8744 five to account for the response type and the protocol frame. */
8745 n
= min (get_remote_packet_size () - 5, len
);
8746 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8747 object_name
, annex
? annex
: "",
8748 phex_nz (offset
, sizeof offset
),
8749 phex_nz (n
, sizeof n
));
8750 i
= putpkt (rs
->buf
);
8755 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8756 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8759 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8760 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8762 /* 'm' means there is (or at least might be) more data after this
8763 batch. That does not make sense unless there's at least one byte
8764 of data in this reply. */
8765 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8766 error (_("Remote qXfer reply contained no data."));
8768 /* Got some data. */
8769 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8770 packet_len
- 1, readbuf
, n
);
8772 /* 'l' is an EOF marker, possibly including a final block of data,
8773 or possibly empty. If we have the final block of a non-empty
8774 object, record this fact to bypass a subsequent partial read. */
8775 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8777 finished_object
= xstrdup (object_name
);
8778 finished_annex
= xstrdup (annex
? annex
: "");
8779 finished_offset
= offset
+ i
;
8786 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8787 const char *annex
, gdb_byte
*readbuf
,
8788 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8790 struct remote_state
*rs
;
8795 set_remote_traceframe ();
8796 set_general_thread (inferior_ptid
);
8798 rs
= get_remote_state ();
8800 /* Handle memory using the standard memory routines. */
8801 if (object
== TARGET_OBJECT_MEMORY
)
8807 /* If the remote target is connected but not running, we should
8808 pass this request down to a lower stratum (e.g. the executable
8810 if (!target_has_execution
)
8813 if (writebuf
!= NULL
)
8814 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8816 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8820 else if (xfered
== 0 && errno
== 0)
8826 /* Handle SPU memory using qxfer packets. */
8827 if (object
== TARGET_OBJECT_SPU
)
8830 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8831 &remote_protocol_packets
8832 [PACKET_qXfer_spu_read
]);
8834 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8835 &remote_protocol_packets
8836 [PACKET_qXfer_spu_write
]);
8839 /* Handle extra signal info using qxfer packets. */
8840 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8843 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8844 &remote_protocol_packets
8845 [PACKET_qXfer_siginfo_read
]);
8847 return remote_write_qxfer (ops
, "siginfo", annex
,
8848 writebuf
, offset
, len
,
8849 &remote_protocol_packets
8850 [PACKET_qXfer_siginfo_write
]);
8853 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8856 return remote_read_qxfer (ops
, "statictrace", annex
,
8857 readbuf
, offset
, len
,
8858 &remote_protocol_packets
8859 [PACKET_qXfer_statictrace_read
]);
8864 /* Only handle flash writes. */
8865 if (writebuf
!= NULL
)
8871 case TARGET_OBJECT_FLASH
:
8872 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8876 else if (xfered
== 0 && errno
== 0)
8886 /* Map pre-existing objects onto letters. DO NOT do this for new
8887 objects!!! Instead specify new query packets. */
8890 case TARGET_OBJECT_AVR
:
8894 case TARGET_OBJECT_AUXV
:
8895 gdb_assert (annex
== NULL
);
8896 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8897 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8899 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8900 return remote_read_qxfer
8901 (ops
, "features", annex
, readbuf
, offset
, len
,
8902 &remote_protocol_packets
[PACKET_qXfer_features
]);
8904 case TARGET_OBJECT_LIBRARIES
:
8905 return remote_read_qxfer
8906 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8907 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8909 case TARGET_OBJECT_LIBRARIES_SVR4
:
8910 return remote_read_qxfer
8911 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8912 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8914 case TARGET_OBJECT_MEMORY_MAP
:
8915 gdb_assert (annex
== NULL
);
8916 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8917 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8919 case TARGET_OBJECT_OSDATA
:
8920 /* Should only get here if we're connected. */
8921 gdb_assert (remote_desc
);
8922 return remote_read_qxfer
8923 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8924 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8926 case TARGET_OBJECT_THREADS
:
8927 gdb_assert (annex
== NULL
);
8928 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8929 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8931 case TARGET_OBJECT_TRACEFRAME_INFO
:
8932 gdb_assert (annex
== NULL
);
8933 return remote_read_qxfer
8934 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8935 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8937 case TARGET_OBJECT_FDPIC
:
8938 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8939 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8941 case TARGET_OBJECT_OPENVMS_UIB
:
8942 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8943 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8945 case TARGET_OBJECT_BTRACE
:
8946 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8947 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8953 /* Note: a zero OFFSET and LEN can be used to query the minimum
8955 if (offset
== 0 && len
== 0)
8956 return (get_remote_packet_size ());
8957 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8958 large enough let the caller deal with it. */
8959 if (len
< get_remote_packet_size ())
8961 len
= get_remote_packet_size ();
8963 /* Except for querying the minimum buffer size, target must be open. */
8965 error (_("remote query is only available after target open"));
8967 gdb_assert (annex
!= NULL
);
8968 gdb_assert (readbuf
!= NULL
);
8974 /* We used one buffer char for the remote protocol q command and
8975 another for the query type. As the remote protocol encapsulation
8976 uses 4 chars plus one extra in case we are debugging
8977 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8980 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8982 /* Bad caller may have sent forbidden characters. */
8983 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8988 gdb_assert (annex
[i
] == '\0');
8990 i
= putpkt (rs
->buf
);
8994 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8995 strcpy ((char *) readbuf
, rs
->buf
);
8997 return strlen ((char *) readbuf
);
9001 remote_search_memory (struct target_ops
* ops
,
9002 CORE_ADDR start_addr
, ULONGEST search_space_len
,
9003 const gdb_byte
*pattern
, ULONGEST pattern_len
,
9004 CORE_ADDR
*found_addrp
)
9006 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
9007 struct remote_state
*rs
= get_remote_state ();
9008 int max_size
= get_memory_write_packet_size ();
9009 struct packet_config
*packet
=
9010 &remote_protocol_packets
[PACKET_qSearch_memory
];
9011 /* Number of packet bytes used to encode the pattern;
9012 this could be more than PATTERN_LEN due to escape characters. */
9013 int escaped_pattern_len
;
9014 /* Amount of pattern that was encodable in the packet. */
9015 int used_pattern_len
;
9018 ULONGEST found_addr
;
9020 /* Don't go to the target if we don't have to.
9021 This is done before checking packet->support to avoid the possibility that
9022 a success for this edge case means the facility works in general. */
9023 if (pattern_len
> search_space_len
)
9025 if (pattern_len
== 0)
9027 *found_addrp
= start_addr
;
9031 /* If we already know the packet isn't supported, fall back to the simple
9032 way of searching memory. */
9034 if (packet
->support
== PACKET_DISABLE
)
9036 /* Target doesn't provided special support, fall back and use the
9037 standard support (copy memory and do the search here). */
9038 return simple_search_memory (ops
, start_addr
, search_space_len
,
9039 pattern
, pattern_len
, found_addrp
);
9042 /* Make sure the remote is pointing at the right process. */
9043 set_general_process ();
9045 /* Insert header. */
9046 i
= snprintf (rs
->buf
, max_size
,
9047 "qSearch:memory:%s;%s;",
9048 phex_nz (start_addr
, addr_size
),
9049 phex_nz (search_space_len
, sizeof (search_space_len
)));
9050 max_size
-= (i
+ 1);
9052 /* Escape as much data as fits into rs->buf. */
9053 escaped_pattern_len
=
9054 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9055 &used_pattern_len
, max_size
);
9057 /* Bail if the pattern is too large. */
9058 if (used_pattern_len
!= pattern_len
)
9059 error (_("Pattern is too large to transmit to remote target."));
9061 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9062 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9063 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9065 /* The request may not have worked because the command is not
9066 supported. If so, fall back to the simple way. */
9067 if (packet
->support
== PACKET_DISABLE
)
9069 return simple_search_memory (ops
, start_addr
, search_space_len
,
9070 pattern
, pattern_len
, found_addrp
);
9075 if (rs
->buf
[0] == '0')
9077 else if (rs
->buf
[0] == '1')
9080 if (rs
->buf
[1] != ',')
9081 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9082 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9083 *found_addrp
= found_addr
;
9086 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9092 remote_rcmd (char *command
,
9093 struct ui_file
*outbuf
)
9095 struct remote_state
*rs
= get_remote_state ();
9099 error (_("remote rcmd is only available after target open"));
9101 /* Send a NULL command across as an empty command. */
9102 if (command
== NULL
)
9105 /* The query prefix. */
9106 strcpy (rs
->buf
, "qRcmd,");
9107 p
= strchr (rs
->buf
, '\0');
9109 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9110 > get_remote_packet_size ())
9111 error (_("\"monitor\" command ``%s'' is too long."), command
);
9113 /* Encode the actual command. */
9114 bin2hex ((gdb_byte
*) command
, p
, 0);
9116 if (putpkt (rs
->buf
) < 0)
9117 error (_("Communication problem with target."));
9119 /* get/display the response */
9124 /* XXX - see also remote_get_noisy_reply(). */
9125 QUIT
; /* Allow user to bail out with ^C. */
9127 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9129 /* Timeout. Continue to (try to) read responses.
9130 This is better than stopping with an error, assuming the stub
9131 is still executing the (long) monitor command.
9132 If needed, the user can interrupt gdb using C-c, obtaining
9133 an effect similar to stop on timeout. */
9138 error (_("Target does not support this command."));
9139 if (buf
[0] == 'O' && buf
[1] != 'K')
9141 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9144 if (strcmp (buf
, "OK") == 0)
9146 if (strlen (buf
) == 3 && buf
[0] == 'E'
9147 && isdigit (buf
[1]) && isdigit (buf
[2]))
9149 error (_("Protocol error with Rcmd"));
9151 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9153 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9155 fputc_unfiltered (c
, outbuf
);
9161 static VEC(mem_region_s
) *
9162 remote_memory_map (struct target_ops
*ops
)
9164 VEC(mem_region_s
) *result
= NULL
;
9165 char *text
= target_read_stralloc (¤t_target
,
9166 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9170 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9172 result
= parse_memory_map (text
);
9173 do_cleanups (back_to
);
9180 packet_command (char *args
, int from_tty
)
9182 struct remote_state
*rs
= get_remote_state ();
9185 error (_("command can only be used with remote target"));
9188 error (_("remote-packet command requires packet text as argument"));
9190 puts_filtered ("sending: ");
9191 print_packet (args
);
9192 puts_filtered ("\n");
9195 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9196 puts_filtered ("received: ");
9197 print_packet (rs
->buf
);
9198 puts_filtered ("\n");
9202 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9204 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9206 static void threadset_test_cmd (char *cmd
, int tty
);
9208 static void threadalive_test (char *cmd
, int tty
);
9210 static void threadlist_test_cmd (char *cmd
, int tty
);
9212 int get_and_display_threadinfo (threadref
*ref
);
9214 static void threadinfo_test_cmd (char *cmd
, int tty
);
9216 static int thread_display_step (threadref
*ref
, void *context
);
9218 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9220 static void init_remote_threadtests (void);
9222 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9225 threadset_test_cmd (char *cmd
, int tty
)
9227 int sample_thread
= SAMPLE_THREAD
;
9229 printf_filtered (_("Remote threadset test\n"));
9230 set_general_thread (sample_thread
);
9235 threadalive_test (char *cmd
, int tty
)
9237 int sample_thread
= SAMPLE_THREAD
;
9238 int pid
= ptid_get_pid (inferior_ptid
);
9239 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9241 if (remote_thread_alive (ptid
))
9242 printf_filtered ("PASS: Thread alive test\n");
9244 printf_filtered ("FAIL: Thread alive test\n");
9247 void output_threadid (char *title
, threadref
*ref
);
9250 output_threadid (char *title
, threadref
*ref
)
9254 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9256 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9260 threadlist_test_cmd (char *cmd
, int tty
)
9263 threadref nextthread
;
9264 int done
, result_count
;
9265 threadref threadlist
[3];
9267 printf_filtered ("Remote Threadlist test\n");
9268 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9269 &result_count
, &threadlist
[0]))
9270 printf_filtered ("FAIL: threadlist test\n");
9273 threadref
*scan
= threadlist
;
9274 threadref
*limit
= scan
+ result_count
;
9276 while (scan
< limit
)
9277 output_threadid (" thread ", scan
++);
9282 display_thread_info (struct gdb_ext_thread_info
*info
)
9284 output_threadid ("Threadid: ", &info
->threadid
);
9285 printf_filtered ("Name: %s\n ", info
->shortname
);
9286 printf_filtered ("State: %s\n", info
->display
);
9287 printf_filtered ("other: %s\n\n", info
->more_display
);
9291 get_and_display_threadinfo (threadref
*ref
)
9295 struct gdb_ext_thread_info threadinfo
;
9297 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9298 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9299 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9300 display_thread_info (&threadinfo
);
9305 threadinfo_test_cmd (char *cmd
, int tty
)
9307 int athread
= SAMPLE_THREAD
;
9311 int_to_threadref (&thread
, athread
);
9312 printf_filtered ("Remote Threadinfo test\n");
9313 if (!get_and_display_threadinfo (&thread
))
9314 printf_filtered ("FAIL cannot get thread info\n");
9318 thread_display_step (threadref
*ref
, void *context
)
9320 /* output_threadid(" threadstep ",ref); *//* simple test */
9321 return get_and_display_threadinfo (ref
);
9325 threadlist_update_test_cmd (char *cmd
, int tty
)
9327 printf_filtered ("Remote Threadlist update test\n");
9328 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9332 init_remote_threadtests (void)
9334 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9335 _("Fetch and print the remote list of "
9336 "thread identifiers, one pkt only"));
9337 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9338 _("Fetch and display info about one thread"));
9339 add_com ("tset", class_obscure
, threadset_test_cmd
,
9340 _("Test setting to a different thread"));
9341 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9342 _("Iterate through updating all remote thread info"));
9343 add_com ("talive", class_obscure
, threadalive_test
,
9344 _(" Remote thread alive test "));
9349 /* Convert a thread ID to a string. Returns the string in a static
9353 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9355 static char buf
[64];
9356 struct remote_state
*rs
= get_remote_state ();
9358 if (ptid_equal (ptid
, null_ptid
))
9359 return normal_pid_to_str (ptid
);
9360 else if (ptid_is_pid (ptid
))
9362 /* Printing an inferior target id. */
9364 /* When multi-process extensions are off, there's no way in the
9365 remote protocol to know the remote process id, if there's any
9366 at all. There's one exception --- when we're connected with
9367 target extended-remote, and we manually attached to a process
9368 with "attach PID". We don't record anywhere a flag that
9369 allows us to distinguish that case from the case of
9370 connecting with extended-remote and the stub already being
9371 attached to a process, and reporting yes to qAttached, hence
9372 no smart special casing here. */
9373 if (!remote_multi_process_p (rs
))
9375 xsnprintf (buf
, sizeof buf
, "Remote target");
9379 return normal_pid_to_str (ptid
);
9383 if (ptid_equal (magic_null_ptid
, ptid
))
9384 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9385 else if (rs
->extended
&& remote_multi_process_p (rs
))
9386 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9387 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9389 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9390 ptid_get_tid (ptid
));
9395 /* Get the address of the thread local variable in OBJFILE which is
9396 stored at OFFSET within the thread local storage for thread PTID. */
9399 remote_get_thread_local_address (struct target_ops
*ops
,
9400 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9402 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9404 struct remote_state
*rs
= get_remote_state ();
9406 char *endp
= rs
->buf
+ get_remote_packet_size ();
9407 enum packet_result result
;
9409 strcpy (p
, "qGetTLSAddr:");
9411 p
= write_ptid (p
, endp
, ptid
);
9413 p
+= hexnumstr (p
, offset
);
9415 p
+= hexnumstr (p
, lm
);
9419 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9420 result
= packet_ok (rs
->buf
,
9421 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9422 if (result
== PACKET_OK
)
9426 unpack_varlen_hex (rs
->buf
, &result
);
9429 else if (result
== PACKET_UNKNOWN
)
9430 throw_error (TLS_GENERIC_ERROR
,
9431 _("Remote target doesn't support qGetTLSAddr packet"));
9433 throw_error (TLS_GENERIC_ERROR
,
9434 _("Remote target failed to process qGetTLSAddr request"));
9437 throw_error (TLS_GENERIC_ERROR
,
9438 _("TLS not supported or disabled on this target"));
9443 /* Provide thread local base, i.e. Thread Information Block address.
9444 Returns 1 if ptid is found and thread_local_base is non zero. */
9447 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9449 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9451 struct remote_state
*rs
= get_remote_state ();
9453 char *endp
= rs
->buf
+ get_remote_packet_size ();
9454 enum packet_result result
;
9456 strcpy (p
, "qGetTIBAddr:");
9458 p
= write_ptid (p
, endp
, ptid
);
9462 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9463 result
= packet_ok (rs
->buf
,
9464 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9465 if (result
== PACKET_OK
)
9469 unpack_varlen_hex (rs
->buf
, &result
);
9471 *addr
= (CORE_ADDR
) result
;
9474 else if (result
== PACKET_UNKNOWN
)
9475 error (_("Remote target doesn't support qGetTIBAddr packet"));
9477 error (_("Remote target failed to process qGetTIBAddr request"));
9480 error (_("qGetTIBAddr not supported or disabled on this target"));
9485 /* Support for inferring a target description based on the current
9486 architecture and the size of a 'g' packet. While the 'g' packet
9487 can have any size (since optional registers can be left off the
9488 end), some sizes are easily recognizable given knowledge of the
9489 approximate architecture. */
9491 struct remote_g_packet_guess
9494 const struct target_desc
*tdesc
;
9496 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9497 DEF_VEC_O(remote_g_packet_guess_s
);
9499 struct remote_g_packet_data
9501 VEC(remote_g_packet_guess_s
) *guesses
;
9504 static struct gdbarch_data
*remote_g_packet_data_handle
;
9507 remote_g_packet_data_init (struct obstack
*obstack
)
9509 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9513 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9514 const struct target_desc
*tdesc
)
9516 struct remote_g_packet_data
*data
9517 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9518 struct remote_g_packet_guess new_guess
, *guess
;
9521 gdb_assert (tdesc
!= NULL
);
9524 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9526 if (guess
->bytes
== bytes
)
9527 internal_error (__FILE__
, __LINE__
,
9528 _("Duplicate g packet description added for size %d"),
9531 new_guess
.bytes
= bytes
;
9532 new_guess
.tdesc
= tdesc
;
9533 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9536 /* Return 1 if remote_read_description would do anything on this target
9537 and architecture, 0 otherwise. */
9540 remote_read_description_p (struct target_ops
*target
)
9542 struct remote_g_packet_data
*data
9543 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9545 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9551 static const struct target_desc
*
9552 remote_read_description (struct target_ops
*target
)
9554 struct remote_g_packet_data
*data
9555 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9557 /* Do not try this during initial connection, when we do not know
9558 whether there is a running but stopped thread. */
9559 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9562 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9564 struct remote_g_packet_guess
*guess
;
9566 int bytes
= send_g_packet ();
9569 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9571 if (guess
->bytes
== bytes
)
9572 return guess
->tdesc
;
9574 /* We discard the g packet. A minor optimization would be to
9575 hold on to it, and fill the register cache once we have selected
9576 an architecture, but it's too tricky to do safely. */
9582 /* Remote file transfer support. This is host-initiated I/O, not
9583 target-initiated; for target-initiated, see remote-fileio.c. */
9585 /* If *LEFT is at least the length of STRING, copy STRING to
9586 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9587 decrease *LEFT. Otherwise raise an error. */
9590 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9592 int len
= strlen (string
);
9595 error (_("Packet too long for target."));
9597 memcpy (*buffer
, string
, len
);
9601 /* NUL-terminate the buffer as a convenience, if there is
9607 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9608 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9609 decrease *LEFT. Otherwise raise an error. */
9612 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9615 if (2 * len
> *left
)
9616 error (_("Packet too long for target."));
9618 bin2hex (bytes
, *buffer
, len
);
9622 /* NUL-terminate the buffer as a convenience, if there is
9628 /* If *LEFT is large enough, convert VALUE to hex and add it to
9629 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9630 decrease *LEFT. Otherwise raise an error. */
9633 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9635 int len
= hexnumlen (value
);
9638 error (_("Packet too long for target."));
9640 hexnumstr (*buffer
, value
);
9644 /* NUL-terminate the buffer as a convenience, if there is
9650 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9651 value, *REMOTE_ERRNO to the remote error number or zero if none
9652 was included, and *ATTACHMENT to point to the start of the annex
9653 if any. The length of the packet isn't needed here; there may
9654 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9656 Return 0 if the packet could be parsed, -1 if it could not. If
9657 -1 is returned, the other variables may not be initialized. */
9660 remote_hostio_parse_result (char *buffer
, int *retcode
,
9661 int *remote_errno
, char **attachment
)
9668 if (buffer
[0] != 'F')
9672 *retcode
= strtol (&buffer
[1], &p
, 16);
9673 if (errno
!= 0 || p
== &buffer
[1])
9676 /* Check for ",errno". */
9680 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9681 if (errno
!= 0 || p
+ 1 == p2
)
9686 /* Check for ";attachment". If there is no attachment, the
9687 packet should end here. */
9690 *attachment
= p
+ 1;
9693 else if (*p
== '\0')
9699 /* Send a prepared I/O packet to the target and read its response.
9700 The prepared packet is in the global RS->BUF before this function
9701 is called, and the answer is there when we return.
9703 COMMAND_BYTES is the length of the request to send, which may include
9704 binary data. WHICH_PACKET is the packet configuration to check
9705 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9706 is set to the error number and -1 is returned. Otherwise the value
9707 returned by the function is returned.
9709 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9710 attachment is expected; an error will be reported if there's a
9711 mismatch. If one is found, *ATTACHMENT will be set to point into
9712 the packet buffer and *ATTACHMENT_LEN will be set to the
9713 attachment's length. */
9716 remote_hostio_send_command (int command_bytes
, int which_packet
,
9717 int *remote_errno
, char **attachment
,
9718 int *attachment_len
)
9720 struct remote_state
*rs
= get_remote_state ();
9721 int ret
, bytes_read
;
9722 char *attachment_tmp
;
9725 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9727 *remote_errno
= FILEIO_ENOSYS
;
9731 putpkt_binary (rs
->buf
, command_bytes
);
9732 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9734 /* If it timed out, something is wrong. Don't try to parse the
9738 *remote_errno
= FILEIO_EINVAL
;
9742 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9745 *remote_errno
= FILEIO_EINVAL
;
9747 case PACKET_UNKNOWN
:
9748 *remote_errno
= FILEIO_ENOSYS
;
9754 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9757 *remote_errno
= FILEIO_EINVAL
;
9761 /* Make sure we saw an attachment if and only if we expected one. */
9762 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9763 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9765 *remote_errno
= FILEIO_EINVAL
;
9769 /* If an attachment was found, it must point into the packet buffer;
9770 work out how many bytes there were. */
9771 if (attachment_tmp
!= NULL
)
9773 *attachment
= attachment_tmp
;
9774 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9780 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9781 remote file descriptor, or -1 if an error occurs (and set
9785 remote_hostio_open (const char *filename
, int flags
, int mode
,
9788 struct remote_state
*rs
= get_remote_state ();
9790 int left
= get_remote_packet_size () - 1;
9792 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9794 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9796 remote_buffer_add_string (&p
, &left
, ",");
9798 remote_buffer_add_int (&p
, &left
, flags
);
9799 remote_buffer_add_string (&p
, &left
, ",");
9801 remote_buffer_add_int (&p
, &left
, mode
);
9803 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9804 remote_errno
, NULL
, NULL
);
9807 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9808 Return the number of bytes written, or -1 if an error occurs (and
9809 set *REMOTE_ERRNO). */
9812 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9813 ULONGEST offset
, int *remote_errno
)
9815 struct remote_state
*rs
= get_remote_state ();
9817 int left
= get_remote_packet_size ();
9820 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9822 remote_buffer_add_int (&p
, &left
, fd
);
9823 remote_buffer_add_string (&p
, &left
, ",");
9825 remote_buffer_add_int (&p
, &left
, offset
);
9826 remote_buffer_add_string (&p
, &left
, ",");
9828 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9829 get_remote_packet_size () - (p
- rs
->buf
));
9831 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9832 remote_errno
, NULL
, NULL
);
9835 /* Read up to LEN bytes FD on the remote target into READ_BUF
9836 Return the number of bytes read, or -1 if an error occurs (and
9837 set *REMOTE_ERRNO). */
9840 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9841 ULONGEST offset
, int *remote_errno
)
9843 struct remote_state
*rs
= get_remote_state ();
9846 int left
= get_remote_packet_size ();
9847 int ret
, attachment_len
;
9850 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9852 remote_buffer_add_int (&p
, &left
, fd
);
9853 remote_buffer_add_string (&p
, &left
, ",");
9855 remote_buffer_add_int (&p
, &left
, len
);
9856 remote_buffer_add_string (&p
, &left
, ",");
9858 remote_buffer_add_int (&p
, &left
, offset
);
9860 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9861 remote_errno
, &attachment
,
9867 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9869 if (read_len
!= ret
)
9870 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9875 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9876 (and set *REMOTE_ERRNO). */
9879 remote_hostio_close (int fd
, int *remote_errno
)
9881 struct remote_state
*rs
= get_remote_state ();
9883 int left
= get_remote_packet_size () - 1;
9885 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9887 remote_buffer_add_int (&p
, &left
, fd
);
9889 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9890 remote_errno
, NULL
, NULL
);
9893 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9894 occurs (and set *REMOTE_ERRNO). */
9897 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9899 struct remote_state
*rs
= get_remote_state ();
9901 int left
= get_remote_packet_size () - 1;
9903 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9905 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9908 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9909 remote_errno
, NULL
, NULL
);
9912 /* Read value of symbolic link FILENAME on the remote target. Return
9913 a null-terminated string allocated via xmalloc, or NULL if an error
9914 occurs (and set *REMOTE_ERRNO). */
9917 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9919 struct remote_state
*rs
= get_remote_state ();
9922 int left
= get_remote_packet_size ();
9923 int len
, attachment_len
;
9927 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9929 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9932 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9933 remote_errno
, &attachment
,
9939 ret
= xmalloc (len
+ 1);
9941 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9942 (gdb_byte
*) ret
, len
);
9943 if (read_len
!= len
)
9944 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9951 remote_fileio_errno_to_host (int errnum
)
9975 case FILEIO_ENOTDIR
:
9995 case FILEIO_ENAMETOOLONG
:
9996 return ENAMETOOLONG
;
10002 remote_hostio_error (int errnum
)
10004 int host_error
= remote_fileio_errno_to_host (errnum
);
10006 if (host_error
== -1)
10007 error (_("Unknown remote I/O error %d"), errnum
);
10009 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10013 remote_hostio_close_cleanup (void *opaque
)
10015 int fd
= *(int *) opaque
;
10018 remote_hostio_close (fd
, &remote_errno
);
10023 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10025 const char *filename
= bfd_get_filename (abfd
);
10026 int fd
, remote_errno
;
10029 gdb_assert (remote_filename_p (filename
));
10031 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10034 errno
= remote_fileio_errno_to_host (remote_errno
);
10035 bfd_set_error (bfd_error_system_call
);
10039 stream
= xmalloc (sizeof (int));
10045 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10047 int fd
= *(int *)stream
;
10052 /* Ignore errors on close; these may happen if the remote
10053 connection was already torn down. */
10054 remote_hostio_close (fd
, &remote_errno
);
10056 /* Zero means success. */
10061 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10062 file_ptr nbytes
, file_ptr offset
)
10064 int fd
= *(int *)stream
;
10066 file_ptr pos
, bytes
;
10069 while (nbytes
> pos
)
10071 bytes
= remote_hostio_pread (fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10072 offset
+ pos
, &remote_errno
);
10074 /* Success, but no bytes, means end-of-file. */
10078 errno
= remote_fileio_errno_to_host (remote_errno
);
10079 bfd_set_error (bfd_error_system_call
);
10090 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10092 /* FIXME: We should probably implement remote_hostio_stat. */
10093 sb
->st_size
= INT_MAX
;
10098 remote_filename_p (const char *filename
)
10100 return strncmp (filename
, "remote:", 7) == 0;
10104 remote_bfd_open (const char *remote_file
, const char *target
)
10106 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10107 remote_bfd_iovec_open
, NULL
,
10108 remote_bfd_iovec_pread
,
10109 remote_bfd_iovec_close
,
10110 remote_bfd_iovec_stat
);
10116 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10118 struct cleanup
*back_to
, *close_cleanup
;
10119 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10122 int bytes_in_buffer
;
10127 error (_("command can only be used with remote target"));
10129 file
= gdb_fopen_cloexec (local_file
, "rb");
10131 perror_with_name (local_file
);
10132 back_to
= make_cleanup_fclose (file
);
10134 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10136 0700, &remote_errno
);
10138 remote_hostio_error (remote_errno
);
10140 /* Send up to this many bytes at once. They won't all fit in the
10141 remote packet limit, so we'll transfer slightly fewer. */
10142 io_size
= get_remote_packet_size ();
10143 buffer
= xmalloc (io_size
);
10144 make_cleanup (xfree
, buffer
);
10146 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10148 bytes_in_buffer
= 0;
10151 while (bytes_in_buffer
|| !saw_eof
)
10155 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10156 io_size
- bytes_in_buffer
,
10161 error (_("Error reading %s."), local_file
);
10164 /* EOF. Unless there is something still in the
10165 buffer from the last iteration, we are done. */
10167 if (bytes_in_buffer
== 0)
10175 bytes
+= bytes_in_buffer
;
10176 bytes_in_buffer
= 0;
10178 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10179 offset
, &remote_errno
);
10182 remote_hostio_error (remote_errno
);
10183 else if (retcode
== 0)
10184 error (_("Remote write of %d bytes returned 0!"), bytes
);
10185 else if (retcode
< bytes
)
10187 /* Short write. Save the rest of the read data for the next
10189 bytes_in_buffer
= bytes
- retcode
;
10190 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10196 discard_cleanups (close_cleanup
);
10197 if (remote_hostio_close (fd
, &remote_errno
))
10198 remote_hostio_error (remote_errno
);
10201 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10202 do_cleanups (back_to
);
10206 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10208 struct cleanup
*back_to
, *close_cleanup
;
10209 int fd
, remote_errno
, bytes
, io_size
;
10215 error (_("command can only be used with remote target"));
10217 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10219 remote_hostio_error (remote_errno
);
10221 file
= gdb_fopen_cloexec (local_file
, "wb");
10223 perror_with_name (local_file
);
10224 back_to
= make_cleanup_fclose (file
);
10226 /* Send up to this many bytes at once. They won't all fit in the
10227 remote packet limit, so we'll transfer slightly fewer. */
10228 io_size
= get_remote_packet_size ();
10229 buffer
= xmalloc (io_size
);
10230 make_cleanup (xfree
, buffer
);
10232 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10237 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10239 /* Success, but no bytes, means end-of-file. */
10242 remote_hostio_error (remote_errno
);
10246 bytes
= fwrite (buffer
, 1, bytes
, file
);
10248 perror_with_name (local_file
);
10251 discard_cleanups (close_cleanup
);
10252 if (remote_hostio_close (fd
, &remote_errno
))
10253 remote_hostio_error (remote_errno
);
10256 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10257 do_cleanups (back_to
);
10261 remote_file_delete (const char *remote_file
, int from_tty
)
10263 int retcode
, remote_errno
;
10266 error (_("command can only be used with remote target"));
10268 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10270 remote_hostio_error (remote_errno
);
10273 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10277 remote_put_command (char *args
, int from_tty
)
10279 struct cleanup
*back_to
;
10283 error_no_arg (_("file to put"));
10285 argv
= gdb_buildargv (args
);
10286 back_to
= make_cleanup_freeargv (argv
);
10287 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10288 error (_("Invalid parameters to remote put"));
10290 remote_file_put (argv
[0], argv
[1], from_tty
);
10292 do_cleanups (back_to
);
10296 remote_get_command (char *args
, int from_tty
)
10298 struct cleanup
*back_to
;
10302 error_no_arg (_("file to get"));
10304 argv
= gdb_buildargv (args
);
10305 back_to
= make_cleanup_freeargv (argv
);
10306 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10307 error (_("Invalid parameters to remote get"));
10309 remote_file_get (argv
[0], argv
[1], from_tty
);
10311 do_cleanups (back_to
);
10315 remote_delete_command (char *args
, int from_tty
)
10317 struct cleanup
*back_to
;
10321 error_no_arg (_("file to delete"));
10323 argv
= gdb_buildargv (args
);
10324 back_to
= make_cleanup_freeargv (argv
);
10325 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10326 error (_("Invalid parameters to remote delete"));
10328 remote_file_delete (argv
[0], from_tty
);
10330 do_cleanups (back_to
);
10334 remote_command (char *args
, int from_tty
)
10336 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10340 remote_can_execute_reverse (void)
10342 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10343 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10350 remote_supports_non_stop (void)
10356 remote_supports_disable_randomization (void)
10358 /* Only supported in extended mode. */
10363 remote_supports_multi_process (void)
10365 struct remote_state
*rs
= get_remote_state ();
10367 /* Only extended-remote handles being attached to multiple
10368 processes, even though plain remote can use the multi-process
10369 thread id extensions, so that GDB knows the target process's
10371 return rs
->extended
&& remote_multi_process_p (rs
);
10375 remote_supports_cond_tracepoints (void)
10377 struct remote_state
*rs
= get_remote_state ();
10379 return rs
->cond_tracepoints
;
10383 remote_supports_cond_breakpoints (void)
10385 struct remote_state
*rs
= get_remote_state ();
10387 return rs
->cond_breakpoints
;
10391 remote_supports_fast_tracepoints (void)
10393 struct remote_state
*rs
= get_remote_state ();
10395 return rs
->fast_tracepoints
;
10399 remote_supports_static_tracepoints (void)
10401 struct remote_state
*rs
= get_remote_state ();
10403 return rs
->static_tracepoints
;
10407 remote_supports_install_in_trace (void)
10409 struct remote_state
*rs
= get_remote_state ();
10411 return rs
->install_in_trace
;
10415 remote_supports_enable_disable_tracepoint (void)
10417 struct remote_state
*rs
= get_remote_state ();
10419 return rs
->enable_disable_tracepoints
;
10423 remote_supports_string_tracing (void)
10425 struct remote_state
*rs
= get_remote_state ();
10427 return rs
->string_tracing
;
10431 remote_can_run_breakpoint_commands (void)
10433 struct remote_state
*rs
= get_remote_state ();
10435 return rs
->breakpoint_commands
;
10439 remote_trace_init (void)
10442 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10443 if (strcmp (target_buf
, "OK") != 0)
10444 error (_("Target does not support this command."));
10447 static void free_actions_list (char **actions_list
);
10448 static void free_actions_list_cleanup_wrapper (void *);
10450 free_actions_list_cleanup_wrapper (void *al
)
10452 free_actions_list (al
);
10456 free_actions_list (char **actions_list
)
10460 if (actions_list
== 0)
10463 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10464 xfree (actions_list
[ndx
]);
10466 xfree (actions_list
);
10469 /* Recursive routine to walk through command list including loops, and
10470 download packets for each command. */
10473 remote_download_command_source (int num
, ULONGEST addr
,
10474 struct command_line
*cmds
)
10476 struct remote_state
*rs
= get_remote_state ();
10477 struct command_line
*cmd
;
10479 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10481 QUIT
; /* Allow user to bail out with ^C. */
10482 strcpy (rs
->buf
, "QTDPsrc:");
10483 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10484 rs
->buf
+ strlen (rs
->buf
),
10485 rs
->buf_size
- strlen (rs
->buf
));
10487 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10488 if (strcmp (target_buf
, "OK"))
10489 warning (_("Target does not support source download."));
10491 if (cmd
->control_type
== while_control
10492 || cmd
->control_type
== while_stepping_control
)
10494 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10496 QUIT
; /* Allow user to bail out with ^C. */
10497 strcpy (rs
->buf
, "QTDPsrc:");
10498 encode_source_string (num
, addr
, "cmd", "end",
10499 rs
->buf
+ strlen (rs
->buf
),
10500 rs
->buf_size
- strlen (rs
->buf
));
10502 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10503 if (strcmp (target_buf
, "OK"))
10504 warning (_("Target does not support source download."));
10510 remote_download_tracepoint (struct bp_location
*loc
)
10512 #define BUF_SIZE 2048
10516 char buf
[BUF_SIZE
];
10517 char **tdp_actions
;
10518 char **stepping_actions
;
10520 struct cleanup
*old_chain
= NULL
;
10521 struct agent_expr
*aexpr
;
10522 struct cleanup
*aexpr_chain
= NULL
;
10524 struct breakpoint
*b
= loc
->owner
;
10525 struct tracepoint
*t
= (struct tracepoint
*) b
;
10527 encode_actions (loc
, &tdp_actions
, &stepping_actions
);
10528 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10530 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10533 tpaddr
= loc
->address
;
10534 sprintf_vma (addrbuf
, tpaddr
);
10535 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10536 addrbuf
, /* address */
10537 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10538 t
->step_count
, t
->pass_count
);
10539 /* Fast tracepoints are mostly handled by the target, but we can
10540 tell the target how big of an instruction block should be moved
10542 if (b
->type
== bp_fast_tracepoint
)
10544 /* Only test for support at download time; we may not know
10545 target capabilities at definition time. */
10546 if (remote_supports_fast_tracepoints ())
10550 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10551 tpaddr
, &isize
, NULL
))
10552 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10555 /* If it passed validation at definition but fails now,
10556 something is very wrong. */
10557 internal_error (__FILE__
, __LINE__
,
10558 _("Fast tracepoint not "
10559 "valid during download"));
10562 /* Fast tracepoints are functionally identical to regular
10563 tracepoints, so don't take lack of support as a reason to
10564 give up on the trace run. */
10565 warning (_("Target does not support fast tracepoints, "
10566 "downloading %d as regular tracepoint"), b
->number
);
10568 else if (b
->type
== bp_static_tracepoint
)
10570 /* Only test for support at download time; we may not know
10571 target capabilities at definition time. */
10572 if (remote_supports_static_tracepoints ())
10574 struct static_tracepoint_marker marker
;
10576 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10577 strcat (buf
, ":S");
10579 error (_("Static tracepoint not valid during download"));
10582 /* Fast tracepoints are functionally identical to regular
10583 tracepoints, so don't take lack of support as a reason
10584 to give up on the trace run. */
10585 error (_("Target does not support static tracepoints"));
10587 /* If the tracepoint has a conditional, make it into an agent
10588 expression and append to the definition. */
10591 /* Only test support at download time, we may not know target
10592 capabilities at definition time. */
10593 if (remote_supports_cond_tracepoints ())
10595 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10596 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10597 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10599 pkt
= buf
+ strlen (buf
);
10600 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10601 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10603 do_cleanups (aexpr_chain
);
10606 warning (_("Target does not support conditional tracepoints, "
10607 "ignoring tp %d cond"), b
->number
);
10610 if (b
->commands
|| *default_collect
)
10613 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10614 if (strcmp (target_buf
, "OK"))
10615 error (_("Target does not support tracepoints."));
10617 /* do_single_steps (t); */
10620 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10622 QUIT
; /* Allow user to bail out with ^C. */
10623 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10624 b
->number
, addrbuf
, /* address */
10626 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10629 remote_get_noisy_reply (&target_buf
,
10631 if (strcmp (target_buf
, "OK"))
10632 error (_("Error on target while setting tracepoints."));
10635 if (stepping_actions
)
10637 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10639 QUIT
; /* Allow user to bail out with ^C. */
10640 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10641 b
->number
, addrbuf
, /* address */
10642 ((ndx
== 0) ? "S" : ""),
10643 stepping_actions
[ndx
],
10644 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10646 remote_get_noisy_reply (&target_buf
,
10648 if (strcmp (target_buf
, "OK"))
10649 error (_("Error on target while setting tracepoints."));
10653 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10656 if (b
->addr_string
)
10658 strcpy (buf
, "QTDPsrc:");
10659 encode_source_string (b
->number
, loc
->address
,
10660 "at", b
->addr_string
, buf
+ strlen (buf
),
10661 2048 - strlen (buf
));
10664 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10665 if (strcmp (target_buf
, "OK"))
10666 warning (_("Target does not support source download."));
10668 if (b
->cond_string
)
10670 strcpy (buf
, "QTDPsrc:");
10671 encode_source_string (b
->number
, loc
->address
,
10672 "cond", b
->cond_string
, buf
+ strlen (buf
),
10673 2048 - strlen (buf
));
10675 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10676 if (strcmp (target_buf
, "OK"))
10677 warning (_("Target does not support source download."));
10679 remote_download_command_source (b
->number
, loc
->address
,
10680 breakpoint_commands (b
));
10683 do_cleanups (old_chain
);
10687 remote_can_download_tracepoint (void)
10689 struct remote_state
*rs
= get_remote_state ();
10690 struct trace_status
*ts
;
10693 /* Don't try to install tracepoints until we've relocated our
10694 symbols, and fetched and merged the target's tracepoint list with
10696 if (rs
->starting_up
)
10699 ts
= current_trace_status ();
10700 status
= remote_get_trace_status (ts
);
10702 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10705 /* If we are in a tracing experiment, but remote stub doesn't support
10706 installing tracepoint in trace, we have to return. */
10707 if (!remote_supports_install_in_trace ())
10715 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10717 struct remote_state
*rs
= get_remote_state ();
10720 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10721 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10723 p
= rs
->buf
+ strlen (rs
->buf
);
10724 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10725 error (_("Trace state variable name too long for tsv definition packet"));
10726 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10729 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10730 if (*target_buf
== '\0')
10731 error (_("Target does not support this command."));
10732 if (strcmp (target_buf
, "OK") != 0)
10733 error (_("Error on target while downloading trace state variable."));
10737 remote_enable_tracepoint (struct bp_location
*location
)
10739 struct remote_state
*rs
= get_remote_state ();
10742 sprintf_vma (addr_buf
, location
->address
);
10743 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10744 location
->owner
->number
, addr_buf
);
10746 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10747 if (*rs
->buf
== '\0')
10748 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10749 if (strcmp (rs
->buf
, "OK") != 0)
10750 error (_("Error on target while enabling tracepoint."));
10754 remote_disable_tracepoint (struct bp_location
*location
)
10756 struct remote_state
*rs
= get_remote_state ();
10759 sprintf_vma (addr_buf
, location
->address
);
10760 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10761 location
->owner
->number
, addr_buf
);
10763 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10764 if (*rs
->buf
== '\0')
10765 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10766 if (strcmp (rs
->buf
, "OK") != 0)
10767 error (_("Error on target while disabling tracepoint."));
10771 remote_trace_set_readonly_regions (void)
10775 bfd_size_type size
;
10781 return; /* No information to give. */
10783 strcpy (target_buf
, "QTro");
10784 offset
= strlen (target_buf
);
10785 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10787 char tmp1
[40], tmp2
[40];
10790 if ((s
->flags
& SEC_LOAD
) == 0 ||
10791 /* (s->flags & SEC_CODE) == 0 || */
10792 (s
->flags
& SEC_READONLY
) == 0)
10796 vma
= bfd_get_section_vma (abfd
, s
);
10797 size
= bfd_get_section_size (s
);
10798 sprintf_vma (tmp1
, vma
);
10799 sprintf_vma (tmp2
, vma
+ size
);
10800 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10801 if (offset
+ sec_length
+ 1 > target_buf_size
)
10803 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10806 Too many sections for read-only sections definition packet."));
10809 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10811 offset
+= sec_length
;
10815 putpkt (target_buf
);
10816 getpkt (&target_buf
, &target_buf_size
, 0);
10821 remote_trace_start (void)
10823 putpkt ("QTStart");
10824 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10825 if (*target_buf
== '\0')
10826 error (_("Target does not support this command."));
10827 if (strcmp (target_buf
, "OK") != 0)
10828 error (_("Bogus reply from target: %s"), target_buf
);
10832 remote_get_trace_status (struct trace_status
*ts
)
10834 /* Initialize it just to avoid a GCC false warning. */
10836 /* FIXME we need to get register block size some other way. */
10837 extern int trace_regblock_size
;
10838 volatile struct gdb_exception ex
;
10839 enum packet_result result
;
10841 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10844 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10846 putpkt ("qTStatus");
10848 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10850 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10854 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10856 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10859 throw_exception (ex
);
10862 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10864 /* If the remote target doesn't do tracing, flag it. */
10865 if (result
== PACKET_UNKNOWN
)
10868 /* We're working with a live target. */
10869 ts
->filename
= NULL
;
10872 error (_("Bogus trace status reply from target: %s"), target_buf
);
10874 /* Function 'parse_trace_status' sets default value of each field of
10875 'ts' at first, so we don't have to do it here. */
10876 parse_trace_status (p
, ts
);
10878 return ts
->running
;
10882 remote_get_tracepoint_status (struct breakpoint
*bp
,
10883 struct uploaded_tp
*utp
)
10885 struct remote_state
*rs
= get_remote_state ();
10887 struct bp_location
*loc
;
10888 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10889 size_t size
= get_remote_packet_size ();
10893 tp
->base
.hit_count
= 0;
10894 tp
->traceframe_usage
= 0;
10895 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10897 /* If the tracepoint was never downloaded, don't go asking for
10899 if (tp
->number_on_target
== 0)
10901 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10902 phex_nz (loc
->address
, 0));
10904 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10905 if (reply
&& *reply
)
10908 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10914 utp
->hit_count
= 0;
10915 utp
->traceframe_usage
= 0;
10916 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10917 phex_nz (utp
->addr
, 0));
10919 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10920 if (reply
&& *reply
)
10923 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10929 remote_trace_stop (void)
10932 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10933 if (*target_buf
== '\0')
10934 error (_("Target does not support this command."));
10935 if (strcmp (target_buf
, "OK") != 0)
10936 error (_("Bogus reply from target: %s"), target_buf
);
10940 remote_trace_find (enum trace_find_type type
, int num
,
10941 CORE_ADDR addr1
, CORE_ADDR addr2
,
10944 struct remote_state
*rs
= get_remote_state ();
10945 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10947 int target_frameno
= -1, target_tracept
= -1;
10949 /* Lookups other than by absolute frame number depend on the current
10950 trace selected, so make sure it is correct on the remote end
10952 if (type
!= tfind_number
)
10953 set_remote_traceframe ();
10956 strcpy (p
, "QTFrame:");
10957 p
= strchr (p
, '\0');
10961 xsnprintf (p
, endbuf
- p
, "%x", num
);
10964 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10967 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10970 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10971 phex_nz (addr2
, 0));
10973 case tfind_outside
:
10974 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10975 phex_nz (addr2
, 0));
10978 error (_("Unknown trace find type %d"), type
);
10982 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10983 if (*reply
== '\0')
10984 error (_("Target does not support this command."));
10986 while (reply
&& *reply
)
10991 target_frameno
= (int) strtol (p
, &reply
, 16);
10993 error (_("Unable to parse trace frame number"));
10994 /* Don't update our remote traceframe number cache on failure
10995 to select a remote traceframe. */
10996 if (target_frameno
== -1)
11001 target_tracept
= (int) strtol (p
, &reply
, 16);
11003 error (_("Unable to parse tracepoint number"));
11005 case 'O': /* "OK"? */
11006 if (reply
[1] == 'K' && reply
[2] == '\0')
11009 error (_("Bogus reply from target: %s"), reply
);
11012 error (_("Bogus reply from target: %s"), reply
);
11015 *tpp
= target_tracept
;
11017 remote_traceframe_number
= target_frameno
;
11018 return target_frameno
;
11022 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
11024 struct remote_state
*rs
= get_remote_state ();
11028 set_remote_traceframe ();
11030 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11032 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11033 if (reply
&& *reply
)
11037 unpack_varlen_hex (reply
+ 1, &uval
);
11038 *val
= (LONGEST
) uval
;
11046 remote_save_trace_data (const char *filename
)
11048 struct remote_state
*rs
= get_remote_state ();
11052 strcpy (p
, "QTSave:");
11054 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11055 error (_("Remote file name too long for trace save packet"));
11056 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
11059 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11060 if (*reply
== '\0')
11061 error (_("Target does not support this command."));
11062 if (strcmp (reply
, "OK") != 0)
11063 error (_("Bogus reply from target: %s"), reply
);
11067 /* This is basically a memory transfer, but needs to be its own packet
11068 because we don't know how the target actually organizes its trace
11069 memory, plus we want to be able to ask for as much as possible, but
11070 not be unhappy if we don't get as much as we ask for. */
11073 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11075 struct remote_state
*rs
= get_remote_state ();
11081 strcpy (p
, "qTBuffer:");
11083 p
+= hexnumstr (p
, offset
);
11085 p
+= hexnumstr (p
, len
);
11089 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11090 if (reply
&& *reply
)
11092 /* 'l' by itself means we're at the end of the buffer and
11093 there is nothing more to get. */
11097 /* Convert the reply into binary. Limit the number of bytes to
11098 convert according to our passed-in buffer size, rather than
11099 what was returned in the packet; if the target is
11100 unexpectedly generous and gives us a bigger reply than we
11101 asked for, we don't want to crash. */
11102 rslt
= hex2bin (target_buf
, buf
, len
);
11106 /* Something went wrong, flag as an error. */
11111 remote_set_disconnected_tracing (int val
)
11113 struct remote_state
*rs
= get_remote_state ();
11115 if (rs
->disconnected_tracing
)
11119 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11121 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11122 if (*reply
== '\0')
11123 error (_("Target does not support this command."));
11124 if (strcmp (reply
, "OK") != 0)
11125 error (_("Bogus reply from target: %s"), reply
);
11128 warning (_("Target does not support disconnected tracing."));
11132 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11134 struct thread_info
*info
= find_thread_ptid (ptid
);
11136 if (info
&& info
->private)
11137 return info
->private->core
;
11142 remote_set_circular_trace_buffer (int val
)
11144 struct remote_state
*rs
= get_remote_state ();
11147 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11149 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11150 if (*reply
== '\0')
11151 error (_("Target does not support this command."));
11152 if (strcmp (reply
, "OK") != 0)
11153 error (_("Bogus reply from target: %s"), reply
);
11156 static struct traceframe_info
*
11157 remote_traceframe_info (void)
11161 text
= target_read_stralloc (¤t_target
,
11162 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11165 struct traceframe_info
*info
;
11166 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11168 info
= parse_traceframe_info (text
);
11169 do_cleanups (back_to
);
11176 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11177 instruction on which a fast tracepoint may be placed. Returns -1
11178 if the packet is not supported, and 0 if the minimum instruction
11179 length is unknown. */
11182 remote_get_min_fast_tracepoint_insn_len (void)
11184 struct remote_state
*rs
= get_remote_state ();
11187 /* If we're not debugging a process yet, the IPA can't be
11189 if (!target_has_execution
)
11192 /* Make sure the remote is pointing at the right process. */
11193 set_general_process ();
11195 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11197 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11198 if (*reply
== '\0')
11202 ULONGEST min_insn_len
;
11204 unpack_varlen_hex (reply
, &min_insn_len
);
11206 return (int) min_insn_len
;
11211 remote_set_trace_buffer_size (LONGEST val
)
11213 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11216 struct remote_state
*rs
= get_remote_state ();
11217 char *buf
= rs
->buf
;
11218 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11219 enum packet_result result
;
11221 gdb_assert (val
>= 0 || val
== -1);
11222 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11223 /* Send -1 as literal "-1" to avoid host size dependency. */
11227 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11230 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11233 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11234 result
= packet_ok (rs
->buf
,
11235 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11237 if (result
!= PACKET_OK
)
11238 warning (_("Bogus reply from target: %s"), rs
->buf
);
11243 remote_set_trace_notes (const char *user
, const char *notes
,
11244 const char *stop_notes
)
11246 struct remote_state
*rs
= get_remote_state ();
11248 char *buf
= rs
->buf
;
11249 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11252 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11255 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11256 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, 0);
11262 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11263 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, 0);
11269 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11270 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, 0);
11274 /* Ensure the buffer is terminated. */
11278 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11279 if (*reply
== '\0')
11282 if (strcmp (reply
, "OK") != 0)
11283 error (_("Bogus reply from target: %s"), reply
);
11289 remote_use_agent (int use
)
11291 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11293 struct remote_state
*rs
= get_remote_state ();
11295 /* If the stub supports QAgent. */
11296 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11298 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11300 if (strcmp (rs
->buf
, "OK") == 0)
11311 remote_can_use_agent (void)
11313 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11316 struct btrace_target_info
11318 /* The ptid of the traced thread. */
11322 /* Check whether the target supports branch tracing. */
11325 remote_supports_btrace (void)
11327 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11329 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11331 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11337 /* Enable branch tracing. */
11339 static struct btrace_target_info
*
11340 remote_enable_btrace (ptid_t ptid
)
11342 struct btrace_target_info
*tinfo
= NULL
;
11343 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11344 struct remote_state
*rs
= get_remote_state ();
11345 char *buf
= rs
->buf
;
11346 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11348 if (packet
->support
!= PACKET_ENABLE
)
11349 error (_("Target does not support branch tracing."));
11351 set_general_thread (ptid
);
11353 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11355 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11357 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11359 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11360 error (_("Could not enable branch tracing for %s: %s"),
11361 target_pid_to_str (ptid
), rs
->buf
+ 2);
11363 error (_("Could not enable branch tracing for %s."),
11364 target_pid_to_str (ptid
));
11367 tinfo
= xzalloc (sizeof (*tinfo
));
11368 tinfo
->ptid
= ptid
;
11373 /* Disable branch tracing. */
11376 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11378 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11379 struct remote_state
*rs
= get_remote_state ();
11380 char *buf
= rs
->buf
;
11381 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11383 if (packet
->support
!= PACKET_ENABLE
)
11384 error (_("Target does not support branch tracing."));
11386 set_general_thread (tinfo
->ptid
);
11388 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11390 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11392 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11394 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11395 error (_("Could not disable branch tracing for %s: %s"),
11396 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11398 error (_("Could not disable branch tracing for %s."),
11399 target_pid_to_str (tinfo
->ptid
));
11405 /* Teardown branch tracing. */
11408 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11410 /* We must not talk to the target during teardown. */
11414 /* Read the branch trace. */
11416 static VEC (btrace_block_s
) *
11417 remote_read_btrace (struct btrace_target_info
*tinfo
,
11418 enum btrace_read_type type
)
11420 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11421 struct remote_state
*rs
= get_remote_state ();
11422 VEC (btrace_block_s
) *btrace
= NULL
;
11426 if (packet
->support
!= PACKET_ENABLE
)
11427 error (_("Target does not support branch tracing."));
11429 #if !defined(HAVE_LIBEXPAT)
11430 error (_("Cannot process branch tracing result. XML parsing not supported."));
11435 case btrace_read_all
:
11438 case btrace_read_new
:
11442 internal_error (__FILE__
, __LINE__
,
11443 _("Bad branch tracing read type: %u."),
11444 (unsigned int) type
);
11447 xml
= target_read_stralloc (¤t_target
,
11448 TARGET_OBJECT_BTRACE
, annex
);
11451 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11453 btrace
= parse_xml_btrace (xml
);
11454 do_cleanups (cleanup
);
11461 remote_augmented_libraries_svr4_read (void)
11463 struct remote_state
*rs
= get_remote_state ();
11465 return rs
->augmented_libraries_svr4_read
;
11469 init_remote_ops (void)
11471 remote_ops
.to_shortname
= "remote";
11472 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11473 remote_ops
.to_doc
=
11474 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11475 Specify the serial device it is connected to\n\
11476 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11477 remote_ops
.to_open
= remote_open
;
11478 remote_ops
.to_close
= remote_close
;
11479 remote_ops
.to_detach
= remote_detach
;
11480 remote_ops
.to_disconnect
= remote_disconnect
;
11481 remote_ops
.to_resume
= remote_resume
;
11482 remote_ops
.to_wait
= remote_wait
;
11483 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11484 remote_ops
.to_store_registers
= remote_store_registers
;
11485 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11486 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11487 remote_ops
.to_files_info
= remote_files_info
;
11488 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11489 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11490 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11491 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11492 remote_ops
.to_watchpoint_addr_within_range
=
11493 remote_watchpoint_addr_within_range
;
11494 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11495 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11496 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11497 remote_ops
.to_region_ok_for_hw_watchpoint
11498 = remote_region_ok_for_hw_watchpoint
;
11499 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11500 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11501 remote_ops
.to_kill
= remote_kill
;
11502 remote_ops
.to_load
= generic_load
;
11503 remote_ops
.to_mourn_inferior
= remote_mourn
;
11504 remote_ops
.to_pass_signals
= remote_pass_signals
;
11505 remote_ops
.to_program_signals
= remote_program_signals
;
11506 remote_ops
.to_thread_alive
= remote_thread_alive
;
11507 remote_ops
.to_find_new_threads
= remote_threads_info
;
11508 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11509 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11510 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11511 remote_ops
.to_stop
= remote_stop
;
11512 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11513 remote_ops
.to_rcmd
= remote_rcmd
;
11514 remote_ops
.to_log_command
= serial_log_command
;
11515 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11516 remote_ops
.to_stratum
= process_stratum
;
11517 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11518 remote_ops
.to_has_memory
= default_child_has_memory
;
11519 remote_ops
.to_has_stack
= default_child_has_stack
;
11520 remote_ops
.to_has_registers
= default_child_has_registers
;
11521 remote_ops
.to_has_execution
= default_child_has_execution
;
11522 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11523 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11524 remote_ops
.to_magic
= OPS_MAGIC
;
11525 remote_ops
.to_memory_map
= remote_memory_map
;
11526 remote_ops
.to_flash_erase
= remote_flash_erase
;
11527 remote_ops
.to_flash_done
= remote_flash_done
;
11528 remote_ops
.to_read_description
= remote_read_description
;
11529 remote_ops
.to_search_memory
= remote_search_memory
;
11530 remote_ops
.to_can_async_p
= remote_can_async_p
;
11531 remote_ops
.to_is_async_p
= remote_is_async_p
;
11532 remote_ops
.to_async
= remote_async
;
11533 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11534 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11535 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11536 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11537 remote_ops
.to_supports_disable_randomization
11538 = remote_supports_disable_randomization
;
11539 remote_ops
.to_fileio_open
= remote_hostio_open
;
11540 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11541 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11542 remote_ops
.to_fileio_close
= remote_hostio_close
;
11543 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11544 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11545 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11546 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11547 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11548 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11549 remote_ops
.to_trace_init
= remote_trace_init
;
11550 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11551 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11552 remote_ops
.to_download_trace_state_variable
11553 = remote_download_trace_state_variable
;
11554 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11555 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11556 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11557 remote_ops
.to_trace_start
= remote_trace_start
;
11558 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11559 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11560 remote_ops
.to_trace_stop
= remote_trace_stop
;
11561 remote_ops
.to_trace_find
= remote_trace_find
;
11562 remote_ops
.to_get_trace_state_variable_value
11563 = remote_get_trace_state_variable_value
;
11564 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11565 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11566 remote_ops
.to_upload_trace_state_variables
11567 = remote_upload_trace_state_variables
;
11568 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11569 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11570 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11571 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11572 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11573 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11574 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11575 remote_ops
.to_verify_memory
= remote_verify_memory
;
11576 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11577 remote_ops
.to_set_permissions
= remote_set_permissions
;
11578 remote_ops
.to_static_tracepoint_marker_at
11579 = remote_static_tracepoint_marker_at
;
11580 remote_ops
.to_static_tracepoint_markers_by_strid
11581 = remote_static_tracepoint_markers_by_strid
;
11582 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11583 remote_ops
.to_use_agent
= remote_use_agent
;
11584 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11585 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11586 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11587 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11588 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11589 remote_ops
.to_read_btrace
= remote_read_btrace
;
11590 remote_ops
.to_augmented_libraries_svr4_read
=
11591 remote_augmented_libraries_svr4_read
;
11594 /* Set up the extended remote vector by making a copy of the standard
11595 remote vector and adding to it. */
11598 init_extended_remote_ops (void)
11600 extended_remote_ops
= remote_ops
;
11602 extended_remote_ops
.to_shortname
= "extended-remote";
11603 extended_remote_ops
.to_longname
=
11604 "Extended remote serial target in gdb-specific protocol";
11605 extended_remote_ops
.to_doc
=
11606 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11607 Specify the serial device it is connected to (e.g. /dev/ttya).";
11608 extended_remote_ops
.to_open
= extended_remote_open
;
11609 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11610 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11611 extended_remote_ops
.to_detach
= extended_remote_detach
;
11612 extended_remote_ops
.to_attach
= extended_remote_attach
;
11613 extended_remote_ops
.to_kill
= extended_remote_kill
;
11614 extended_remote_ops
.to_supports_disable_randomization
11615 = extended_remote_supports_disable_randomization
;
11619 remote_can_async_p (void)
11621 if (!target_async_permitted
)
11622 /* We only enable async when the user specifically asks for it. */
11625 /* We're async whenever the serial device is. */
11626 return serial_can_async_p (remote_desc
);
11630 remote_is_async_p (void)
11632 if (!target_async_permitted
)
11633 /* We only enable async when the user specifically asks for it. */
11636 /* We're async whenever the serial device is. */
11637 return serial_is_async_p (remote_desc
);
11640 /* Pass the SERIAL event on and up to the client. One day this code
11641 will be able to delay notifying the client of an event until the
11642 point where an entire packet has been received. */
11644 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11646 static void *async_client_context
;
11647 static serial_event_ftype remote_async_serial_handler
;
11650 remote_async_serial_handler (struct serial
*scb
, void *context
)
11652 /* Don't propogate error information up to the client. Instead let
11653 the client find out about the error by querying the target. */
11654 async_client_callback (INF_REG_EVENT
, async_client_context
);
11658 remote_async_inferior_event_handler (gdb_client_data data
)
11660 inferior_event_handler (INF_REG_EVENT
, NULL
);
11664 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11665 void *context
), void *context
)
11667 if (callback
!= NULL
)
11669 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11670 async_client_callback
= callback
;
11671 async_client_context
= context
;
11674 serial_async (remote_desc
, NULL
, NULL
);
11678 set_remote_cmd (char *args
, int from_tty
)
11680 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11684 show_remote_cmd (char *args
, int from_tty
)
11686 /* We can't just use cmd_show_list here, because we want to skip
11687 the redundant "show remote Z-packet" and the legacy aliases. */
11688 struct cleanup
*showlist_chain
;
11689 struct cmd_list_element
*list
= remote_show_cmdlist
;
11690 struct ui_out
*uiout
= current_uiout
;
11692 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11693 for (; list
!= NULL
; list
= list
->next
)
11694 if (strcmp (list
->name
, "Z-packet") == 0)
11696 else if (list
->type
== not_set_cmd
)
11697 /* Alias commands are exactly like the original, except they
11698 don't have the normal type. */
11702 struct cleanup
*option_chain
11703 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11705 ui_out_field_string (uiout
, "name", list
->name
);
11706 ui_out_text (uiout
, ": ");
11707 if (list
->type
== show_cmd
)
11708 do_show_command ((char *) NULL
, from_tty
, list
);
11710 cmd_func (list
, NULL
, from_tty
);
11711 /* Close the tuple. */
11712 do_cleanups (option_chain
);
11715 /* Close the tuple. */
11716 do_cleanups (showlist_chain
);
11720 /* Function to be called whenever a new objfile (shlib) is detected. */
11722 remote_new_objfile (struct objfile
*objfile
)
11724 if (remote_desc
!= 0) /* Have a remote connection. */
11725 remote_check_symbols ();
11728 /* Pull all the tracepoints defined on the target and create local
11729 data structures representing them. We don't want to create real
11730 tracepoints yet, we don't want to mess up the user's existing
11734 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11736 struct remote_state
*rs
= get_remote_state ();
11739 /* Ask for a first packet of tracepoint definition. */
11741 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11743 while (*p
&& *p
!= 'l')
11745 parse_tracepoint_definition (p
, utpp
);
11746 /* Ask for another packet of tracepoint definition. */
11748 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11755 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11757 struct remote_state
*rs
= get_remote_state ();
11760 /* Ask for a first packet of variable definition. */
11762 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11764 while (*p
&& *p
!= 'l')
11766 parse_tsv_definition (p
, utsvp
);
11767 /* Ask for another packet of variable definition. */
11769 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11775 /* The "set/show range-stepping" show hook. */
11778 show_range_stepping (struct ui_file
*file
, int from_tty
,
11779 struct cmd_list_element
*c
,
11782 fprintf_filtered (file
,
11783 _("Debugger's willingness to use range stepping "
11784 "is %s.\n"), value
);
11787 /* The "set/show range-stepping" set hook. */
11790 set_range_stepping (char *ignore_args
, int from_tty
,
11791 struct cmd_list_element
*c
)
11793 /* Whene enabling, check whether range stepping is actually
11794 supported by the target, and warn if not. */
11795 if (use_range_stepping
)
11797 if (remote_desc
!= NULL
)
11799 struct remote_state
*rs
= get_remote_state ();
11801 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11802 remote_vcont_probe (rs
);
11804 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11805 && rs
->supports_vCont
.r
)
11809 warning (_("Range stepping is not supported by the current target"));
11814 _initialize_remote (void)
11816 struct remote_state
*rs
;
11817 struct cmd_list_element
*cmd
;
11818 const char *cmd_name
;
11820 /* architecture specific data */
11821 remote_gdbarch_data_handle
=
11822 gdbarch_data_register_post_init (init_remote_state
);
11823 remote_g_packet_data_handle
=
11824 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11826 /* Initialize the per-target state. At the moment there is only one
11827 of these, not one per target. Only one target is active at a
11828 time. The default buffer size is unimportant; it will be expanded
11829 whenever a larger buffer is needed. */
11830 rs
= get_remote_state_raw ();
11831 rs
->buf_size
= 400;
11832 rs
->buf
= xmalloc (rs
->buf_size
);
11834 init_remote_ops ();
11835 add_target (&remote_ops
);
11837 init_extended_remote_ops ();
11838 add_target (&extended_remote_ops
);
11840 /* Hook into new objfile notification. */
11841 observer_attach_new_objfile (remote_new_objfile
);
11842 /* We're no longer interested in notification events of an inferior
11844 observer_attach_inferior_exit (discard_pending_stop_replies
);
11846 /* Set up signal handlers. */
11847 sigint_remote_token
=
11848 create_async_signal_handler (async_remote_interrupt
, NULL
);
11849 sigint_remote_twice_token
=
11850 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11853 init_remote_threadtests ();
11856 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11857 /* set/show remote ... */
11859 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11860 Remote protocol specific variables\n\
11861 Configure various remote-protocol specific variables such as\n\
11862 the packets being used"),
11863 &remote_set_cmdlist
, "set remote ",
11864 0 /* allow-unknown */, &setlist
);
11865 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11866 Remote protocol specific variables\n\
11867 Configure various remote-protocol specific variables such as\n\
11868 the packets being used"),
11869 &remote_show_cmdlist
, "show remote ",
11870 0 /* allow-unknown */, &showlist
);
11872 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11873 Compare section data on target to the exec file.\n\
11874 Argument is a single section name (default: all loaded sections)."),
11877 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11878 Send an arbitrary packet to a remote target.\n\
11879 maintenance packet TEXT\n\
11880 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11881 this command sends the string TEXT to the inferior, and displays the\n\
11882 response packet. GDB supplies the initial `$' character, and the\n\
11883 terminating `#' character and checksum."),
11886 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11887 Set whether to send break if interrupted."), _("\
11888 Show whether to send break if interrupted."), _("\
11889 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11890 set_remotebreak
, show_remotebreak
,
11891 &setlist
, &showlist
);
11892 cmd_name
= "remotebreak";
11893 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11894 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11895 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11896 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11897 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11899 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11900 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11902 Set interrupt sequence to remote target."), _("\
11903 Show interrupt sequence to remote target."), _("\
11904 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11905 NULL
, show_interrupt_sequence
,
11906 &remote_set_cmdlist
,
11907 &remote_show_cmdlist
);
11909 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11910 &interrupt_on_connect
, _("\
11911 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11912 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11913 If set, interrupt sequence is sent to remote target."),
11915 &remote_set_cmdlist
, &remote_show_cmdlist
);
11917 /* Install commands for configuring memory read/write packets. */
11919 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11920 Set the maximum number of bytes per memory write packet (deprecated)."),
11922 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11923 Show the maximum number of bytes per memory write packet (deprecated)."),
11925 add_cmd ("memory-write-packet-size", no_class
,
11926 set_memory_write_packet_size
, _("\
11927 Set the maximum number of bytes per memory-write packet.\n\
11928 Specify the number of bytes in a packet or 0 (zero) for the\n\
11929 default packet size. The actual limit is further reduced\n\
11930 dependent on the target. Specify ``fixed'' to disable the\n\
11931 further restriction and ``limit'' to enable that restriction."),
11932 &remote_set_cmdlist
);
11933 add_cmd ("memory-read-packet-size", no_class
,
11934 set_memory_read_packet_size
, _("\
11935 Set the maximum number of bytes per memory-read packet.\n\
11936 Specify the number of bytes in a packet or 0 (zero) for the\n\
11937 default packet size. The actual limit is further reduced\n\
11938 dependent on the target. Specify ``fixed'' to disable the\n\
11939 further restriction and ``limit'' to enable that restriction."),
11940 &remote_set_cmdlist
);
11941 add_cmd ("memory-write-packet-size", no_class
,
11942 show_memory_write_packet_size
,
11943 _("Show the maximum number of bytes per memory-write packet."),
11944 &remote_show_cmdlist
);
11945 add_cmd ("memory-read-packet-size", no_class
,
11946 show_memory_read_packet_size
,
11947 _("Show the maximum number of bytes per memory-read packet."),
11948 &remote_show_cmdlist
);
11950 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11951 &remote_hw_watchpoint_limit
, _("\
11952 Set the maximum number of target hardware watchpoints."), _("\
11953 Show the maximum number of target hardware watchpoints."), _("\
11954 Specify a negative limit for unlimited."),
11955 NULL
, NULL
, /* FIXME: i18n: The maximum
11956 number of target hardware
11957 watchpoints is %s. */
11958 &remote_set_cmdlist
, &remote_show_cmdlist
);
11959 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11960 &remote_hw_watchpoint_length_limit
, _("\
11961 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11962 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11963 Specify a negative limit for unlimited."),
11964 NULL
, NULL
, /* FIXME: i18n: The maximum
11965 length (in bytes) of a target
11966 hardware watchpoint is %s. */
11967 &remote_set_cmdlist
, &remote_show_cmdlist
);
11968 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11969 &remote_hw_breakpoint_limit
, _("\
11970 Set the maximum number of target hardware breakpoints."), _("\
11971 Show the maximum number of target hardware breakpoints."), _("\
11972 Specify a negative limit for unlimited."),
11973 NULL
, NULL
, /* FIXME: i18n: The maximum
11974 number of target hardware
11975 breakpoints is %s. */
11976 &remote_set_cmdlist
, &remote_show_cmdlist
);
11978 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11979 &remote_address_size
, _("\
11980 Set the maximum size of the address (in bits) in a memory packet."), _("\
11981 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11983 NULL
, /* FIXME: i18n: */
11984 &setlist
, &showlist
);
11986 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11987 "X", "binary-download", 1);
11989 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11990 "vCont", "verbose-resume", 0);
11992 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11993 "QPassSignals", "pass-signals", 0);
11995 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11996 "QProgramSignals", "program-signals", 0);
11998 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11999 "qSymbol", "symbol-lookup", 0);
12001 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
12002 "P", "set-register", 1);
12004 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12005 "p", "fetch-register", 1);
12007 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12008 "Z0", "software-breakpoint", 0);
12010 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12011 "Z1", "hardware-breakpoint", 0);
12013 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12014 "Z2", "write-watchpoint", 0);
12016 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12017 "Z3", "read-watchpoint", 0);
12019 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12020 "Z4", "access-watchpoint", 0);
12022 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12023 "qXfer:auxv:read", "read-aux-vector", 0);
12025 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12026 "qXfer:features:read", "target-features", 0);
12028 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12029 "qXfer:libraries:read", "library-info", 0);
12031 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12032 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12034 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12035 "qXfer:memory-map:read", "memory-map", 0);
12037 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12038 "qXfer:spu:read", "read-spu-object", 0);
12040 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12041 "qXfer:spu:write", "write-spu-object", 0);
12043 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12044 "qXfer:osdata:read", "osdata", 0);
12046 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12047 "qXfer:threads:read", "threads", 0);
12049 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12050 "qXfer:siginfo:read", "read-siginfo-object", 0);
12052 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12053 "qXfer:siginfo:write", "write-siginfo-object", 0);
12055 add_packet_config_cmd
12056 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12057 "qXfer:traceframe-info:read", "traceframe-info", 0);
12059 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12060 "qXfer:uib:read", "unwind-info-block", 0);
12062 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12063 "qGetTLSAddr", "get-thread-local-storage-address",
12066 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12067 "qGetTIBAddr", "get-thread-information-block-address",
12070 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12071 "bc", "reverse-continue", 0);
12073 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12074 "bs", "reverse-step", 0);
12076 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12077 "qSupported", "supported-packets", 0);
12079 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12080 "qSearch:memory", "search-memory", 0);
12082 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12083 "qTStatus", "trace-status", 0);
12085 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12086 "vFile:open", "hostio-open", 0);
12088 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12089 "vFile:pread", "hostio-pread", 0);
12091 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12092 "vFile:pwrite", "hostio-pwrite", 0);
12094 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12095 "vFile:close", "hostio-close", 0);
12097 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12098 "vFile:unlink", "hostio-unlink", 0);
12100 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12101 "vFile:readlink", "hostio-readlink", 0);
12103 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12104 "vAttach", "attach", 0);
12106 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12109 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12110 "QStartNoAckMode", "noack", 0);
12112 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12113 "vKill", "kill", 0);
12115 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12116 "qAttached", "query-attached", 0);
12118 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12119 "ConditionalTracepoints",
12120 "conditional-tracepoints", 0);
12122 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12123 "ConditionalBreakpoints",
12124 "conditional-breakpoints", 0);
12126 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12127 "BreakpointCommands",
12128 "breakpoint-commands", 0);
12130 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12131 "FastTracepoints", "fast-tracepoints", 0);
12133 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12134 "TracepointSource", "TracepointSource", 0);
12136 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12137 "QAllow", "allow", 0);
12139 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12140 "StaticTracepoints", "static-tracepoints", 0);
12142 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12143 "InstallInTrace", "install-in-trace", 0);
12145 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12146 "qXfer:statictrace:read", "read-sdata-object", 0);
12148 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12149 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12151 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12152 "QDisableRandomization", "disable-randomization", 0);
12154 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12155 "QAgent", "agent", 0);
12157 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12158 "QTBuffer:size", "trace-buffer-size", 0);
12160 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12161 "Qbtrace:off", "disable-btrace", 0);
12163 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12164 "Qbtrace:bts", "enable-btrace", 0);
12166 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12167 "qXfer:btrace", "read-btrace", 0);
12169 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12170 Z sub-packet has its own set and show commands, but users may
12171 have sets to this variable in their .gdbinit files (or in their
12173 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12174 &remote_Z_packet_detect
, _("\
12175 Set use of remote protocol `Z' packets"), _("\
12176 Show use of remote protocol `Z' packets "), _("\
12177 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12179 set_remote_protocol_Z_packet_cmd
,
12180 show_remote_protocol_Z_packet_cmd
,
12181 /* FIXME: i18n: Use of remote protocol
12182 `Z' packets is %s. */
12183 &remote_set_cmdlist
, &remote_show_cmdlist
);
12185 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12186 Manipulate files on the remote system\n\
12187 Transfer files to and from the remote target system."),
12188 &remote_cmdlist
, "remote ",
12189 0 /* allow-unknown */, &cmdlist
);
12191 add_cmd ("put", class_files
, remote_put_command
,
12192 _("Copy a local file to the remote system."),
12195 add_cmd ("get", class_files
, remote_get_command
,
12196 _("Copy a remote file to the local system."),
12199 add_cmd ("delete", class_files
, remote_delete_command
,
12200 _("Delete a remote file."),
12203 remote_exec_file
= xstrdup ("");
12204 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12205 &remote_exec_file
, _("\
12206 Set the remote pathname for \"run\""), _("\
12207 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12208 &remote_set_cmdlist
, &remote_show_cmdlist
);
12210 add_setshow_boolean_cmd ("range-stepping", class_run
,
12211 &use_range_stepping
, _("\
12212 Enable or disable range stepping."), _("\
12213 Show whether target-assisted range stepping is enabled."), _("\
12214 If on, and the target supports it, when stepping a source line, GDB\n\
12215 tells the target to step the corresponding range of addresses itself instead\n\
12216 of issuing multiple single-steps. This speeds up source level\n\
12217 stepping. If off, GDB always issues single-steps, even if range\n\
12218 stepping is supported by the target. The default is on."),
12219 set_range_stepping
,
12220 show_range_stepping
,
12224 /* Eventually initialize fileio. See fileio.c */
12225 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12227 /* Take advantage of the fact that the LWP field is not used, to tag
12228 special ptids with it set to != 0. */
12229 magic_null_ptid
= ptid_build (42000, 1, -1);
12230 not_sent_ptid
= ptid_build (42000, 1, -2);
12231 any_thread_ptid
= ptid_build (42000, 1, 0);
12233 target_buf_size
= 2048;
12234 target_buf
= xmalloc (target_buf_size
);