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 async_cleanup_sigint_signal_handler (void *dummy
);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void async_handle_remote_sigint (int);
97 static void async_handle_remote_sigint_twice (int);
99 static void remote_files_info (struct target_ops
*ignore
);
101 static void remote_prepare_to_store (struct regcache
*regcache
);
103 static void remote_open (char *name
, int from_tty
);
105 static void extended_remote_open (char *name
, int from_tty
);
107 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
109 static void remote_close (void);
111 static void remote_mourn (struct target_ops
*ops
);
113 static void extended_remote_restart (void);
115 static void extended_remote_mourn (struct target_ops
*);
117 static void remote_mourn_1 (struct target_ops
*);
119 static void remote_send (char **buf
, long *sizeof_buf_p
);
121 static int readchar (int timeout
);
123 static void remote_serial_write (const char *str
, int len
);
125 static void remote_kill (struct target_ops
*ops
);
127 static int tohex (int nib
);
129 static int remote_can_async_p (void);
131 static int remote_is_async_p (void);
133 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
134 void *context
), void *context
);
136 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
138 static void sync_remote_interrupt_twice (int signo
);
140 static void interrupt_query (void);
142 static void set_general_thread (struct ptid ptid
);
143 static void set_continue_thread (struct ptid ptid
);
145 static void get_offsets (void);
147 static void skip_frame (void);
149 static long read_frame (char **buf_p
, long *sizeof_buf
);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void remote_stop (ptid_t
);
159 static int ishex (int ch
, int *val
);
161 static int stubhex (int ch
);
163 static int hexnumstr (char *, ULONGEST
);
165 static int hexnumnstr (char *, ULONGEST
, int);
167 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
169 static void print_packet (char *);
171 static void compare_sections_command (char *, int);
173 static void packet_command (char *, int);
175 static int stub_unpack_int (char *buff
, int fieldlength
);
177 static ptid_t
remote_current_thread (ptid_t oldptid
);
179 static void remote_find_new_threads (void);
181 static void record_currthread (ptid_t currthread
);
183 static int fromhex (int a
);
185 static int putpkt_binary (char *buf
, int cnt
);
187 static void check_binary_download (CORE_ADDR addr
);
189 struct packet_config
;
191 static void show_packet_config_cmd (struct packet_config
*config
);
193 static void update_packet_config (struct packet_config
*config
);
195 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
196 struct cmd_list_element
*c
);
198 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
200 struct cmd_list_element
*c
,
203 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
204 static ptid_t
read_ptid (char *buf
, char **obuf
);
206 static void remote_set_permissions (void);
209 static int remote_get_trace_status (struct trace_status
*ts
);
211 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
213 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
215 static void remote_query_supported (void);
217 static void remote_check_symbols (void);
219 void _initialize_remote (void);
222 static void stop_reply_xfree (struct stop_reply
*);
223 static void remote_parse_stop_reply (char *, struct stop_reply
*);
224 static void push_stop_reply (struct stop_reply
*);
225 static void discard_pending_stop_replies (struct inferior
*);
226 static int peek_stop_reply (ptid_t ptid
);
228 static void remote_async_inferior_event_handler (gdb_client_data
);
230 static void remote_terminal_ours (void);
232 static int remote_read_description_p (struct target_ops
*target
);
234 static void remote_console_output (char *msg
);
236 static int remote_supports_cond_breakpoints (void);
238 static int remote_can_run_breakpoint_commands (void);
242 static struct cmd_list_element
*remote_cmdlist
;
244 /* For "set remote" and "show remote". */
246 static struct cmd_list_element
*remote_set_cmdlist
;
247 static struct cmd_list_element
*remote_show_cmdlist
;
249 /* Stub vCont actions support.
251 Each field is a boolean flag indicating whether the stub reports
252 support for the corresponding action. */
254 struct vCont_action_support
263 /* Controls whether GDB is willing to use range stepping. */
265 static int use_range_stepping
= 1;
267 /* Description of the remote protocol state for the currently
268 connected target. This is per-target state, and independent of the
269 selected architecture. */
273 /* A buffer to use for incoming packets, and its current size. The
274 buffer is grown dynamically for larger incoming packets.
275 Outgoing packets may also be constructed in this buffer.
276 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
277 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
282 /* True if we're going through initial connection setup (finding out
283 about the remote side's threads, relocating symbols, etc.). */
286 /* If we negotiated packet size explicitly (and thus can bypass
287 heuristics for the largest packet size that will not overflow
288 a buffer in the stub), this will be set to that packet size.
289 Otherwise zero, meaning to use the guessed size. */
290 long explicit_packet_size
;
292 /* remote_wait is normally called when the target is running and
293 waits for a stop reply packet. But sometimes we need to call it
294 when the target is already stopped. We can send a "?" packet
295 and have remote_wait read the response. Or, if we already have
296 the response, we can stash it in BUF and tell remote_wait to
297 skip calling getpkt. This flag is set when BUF contains a
298 stop reply packet and the target is not waiting. */
299 int cached_wait_status
;
301 /* True, if in no ack mode. That is, neither GDB nor the stub will
302 expect acks from each other. The connection is assumed to be
306 /* True if we're connected in extended remote mode. */
309 /* True if the stub reported support for multi-process
311 int multi_process_aware
;
313 /* True if we resumed the target and we're waiting for the target to
314 stop. In the mean time, we can't start another command/query.
315 The remote server wouldn't be ready to process it, so we'd
316 timeout waiting for a reply that would never come and eventually
317 we'd close the connection. This can happen in asynchronous mode
318 because we allow GDB commands while the target is running. */
319 int waiting_for_stop_reply
;
321 /* True if the stub reports support for non-stop mode. */
324 /* The status of the stub support for the various vCont actions. */
325 struct vCont_action_support supports_vCont
;
327 /* True if the stub reports support for conditional tracepoints. */
328 int cond_tracepoints
;
330 /* True if the stub reports support for target-side breakpoint
332 int cond_breakpoints
;
334 /* True if the stub reports support for target-side breakpoint
336 int breakpoint_commands
;
338 /* True if the stub reports support for fast tracepoints. */
339 int fast_tracepoints
;
341 /* True if the stub reports support for static tracepoints. */
342 int static_tracepoints
;
344 /* True if the stub reports support for installing tracepoint while
346 int install_in_trace
;
348 /* True if the stub can continue running a trace while GDB is
350 int disconnected_tracing
;
352 /* True if the stub reports support for enabling and disabling
353 tracepoints while a trace experiment is running. */
354 int enable_disable_tracepoints
;
356 /* True if the stub can collect strings using tracenz bytecode. */
359 /* True if the stub supports qXfer:libraries-svr4:read with a
361 int augmented_libraries_svr4_read
;
363 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
364 responded to that. */
367 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
368 remote_open knows that we don't have a file open when the program
370 struct serial
*remote_desc
;
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)
406 /* Allocate a new struct remote_state with xmalloc, initialize it, and
409 static struct remote_state
*
410 new_remote_state (void)
412 struct remote_state
*result
= XCNEW (struct remote_state
);
414 /* The default buffer size is unimportant; it will be expanded
415 whenever a larger buffer is needed. */
416 result
->buf_size
= 400;
417 result
->buf
= xmalloc (result
->buf_size
);
422 /* Description of the remote protocol for a given architecture. */
426 long offset
; /* Offset into G packet. */
427 long regnum
; /* GDB's internal register number. */
428 LONGEST pnum
; /* Remote protocol register number. */
429 int in_g_packet
; /* Always part of G packet. */
430 /* long size in bytes; == register_size (target_gdbarch (), regnum);
432 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
436 struct remote_arch_state
438 /* Description of the remote protocol registers. */
439 long sizeof_g_packet
;
441 /* Description of the remote protocol registers indexed by REGNUM
442 (making an array gdbarch_num_regs in size). */
443 struct packet_reg
*regs
;
445 /* This is the size (in chars) of the first response to the ``g''
446 packet. It is used as a heuristic when determining the maximum
447 size of memory-read and memory-write packets. A target will
448 typically only reserve a buffer large enough to hold the ``g''
449 packet. The size does not include packet overhead (headers and
451 long actual_register_packet_size
;
453 /* This is the maximum size (in chars) of a non read/write packet.
454 It is also used as a cap on the size of read/write packets. */
455 long remote_packet_size
;
458 long sizeof_pkt
= 2000;
460 /* Utility: generate error from an incoming stub packet. */
462 trace_error (char *buf
)
465 return; /* not an error msg */
468 case '1': /* malformed packet error */
469 if (*++buf
== '0') /* general case: */
470 error (_("remote.c: error in outgoing packet."));
472 error (_("remote.c: error in outgoing packet at field #%ld."),
473 strtol (buf
, NULL
, 16));
475 error (_("Target returns error code '%s'."), buf
);
479 /* Utility: wait for reply from stub, while accepting "O" packets. */
481 remote_get_noisy_reply (char **buf_p
,
484 do /* Loop on reply from remote stub. */
488 QUIT
; /* Allow user to bail out with ^C. */
489 getpkt (buf_p
, sizeof_buf
, 0);
493 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
496 CORE_ADDR from
, to
, org_to
;
498 int adjusted_size
= 0;
499 volatile struct gdb_exception ex
;
501 p
= buf
+ strlen ("qRelocInsn:");
502 pp
= unpack_varlen_hex (p
, &ul
);
504 error (_("invalid qRelocInsn packet: %s"), buf
);
508 unpack_varlen_hex (p
, &ul
);
513 TRY_CATCH (ex
, RETURN_MASK_ALL
)
515 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
519 adjusted_size
= to
- org_to
;
521 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
524 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
526 /* Propagate memory errors silently back to the target.
527 The stub may have limited the range of addresses we
528 can write to, for example. */
533 /* Something unexpectedly bad happened. Be verbose so
534 we can tell what, and propagate the error back to the
535 stub, so it doesn't get stuck waiting for a
537 exception_fprintf (gdb_stderr
, ex
,
538 _("warning: relocating instruction: "));
542 else if (buf
[0] == 'O' && buf
[1] != 'K')
543 remote_console_output (buf
+ 1); /* 'O' message from stub */
545 return buf
; /* Here's the actual reply. */
550 /* Handle for retreving the remote protocol data from gdbarch. */
551 static struct gdbarch_data
*remote_gdbarch_data_handle
;
553 static struct remote_arch_state
*
554 get_remote_arch_state (void)
556 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
559 /* Fetch the global remote target state. */
561 static struct remote_state
*
562 get_remote_state (void)
564 /* Make sure that the remote architecture state has been
565 initialized, because doing so might reallocate rs->buf. Any
566 function which calls getpkt also needs to be mindful of changes
567 to rs->buf, but this call limits the number of places which run
569 get_remote_arch_state ();
571 return get_remote_state_raw ();
575 compare_pnums (const void *lhs_
, const void *rhs_
)
577 const struct packet_reg
* const *lhs
= lhs_
;
578 const struct packet_reg
* const *rhs
= rhs_
;
580 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
582 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
589 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
591 int regnum
, num_remote_regs
, offset
;
592 struct packet_reg
**remote_regs
;
594 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
596 struct packet_reg
*r
= ®s
[regnum
];
598 if (register_size (gdbarch
, regnum
) == 0)
599 /* Do not try to fetch zero-sized (placeholder) registers. */
602 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
607 /* Define the g/G packet format as the contents of each register
608 with a remote protocol number, in order of ascending protocol
611 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
612 * sizeof (struct packet_reg
*));
613 for (num_remote_regs
= 0, regnum
= 0;
614 regnum
< gdbarch_num_regs (gdbarch
);
616 if (regs
[regnum
].pnum
!= -1)
617 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
619 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
622 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
624 remote_regs
[regnum
]->in_g_packet
= 1;
625 remote_regs
[regnum
]->offset
= offset
;
626 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
632 /* Given the architecture described by GDBARCH, return the remote
633 protocol register's number and the register's offset in the g/G
634 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
635 If the target does not have a mapping for REGNUM, return false,
636 otherwise, return true. */
639 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
640 int *pnum
, int *poffset
)
643 struct packet_reg
*regs
;
644 struct cleanup
*old_chain
;
646 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
648 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
649 old_chain
= make_cleanup (xfree
, regs
);
651 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
653 *pnum
= regs
[regnum
].pnum
;
654 *poffset
= regs
[regnum
].offset
;
656 do_cleanups (old_chain
);
662 init_remote_state (struct gdbarch
*gdbarch
)
664 struct remote_state
*rs
= get_remote_state_raw ();
665 struct remote_arch_state
*rsa
;
667 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
669 /* Use the architecture to build a regnum<->pnum table, which will be
670 1:1 unless a feature set specifies otherwise. */
671 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
672 gdbarch_num_regs (gdbarch
),
675 /* Record the maximum possible size of the g packet - it may turn out
677 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
679 /* Default maximum number of characters in a packet body. Many
680 remote stubs have a hardwired buffer size of 400 bytes
681 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
682 as the maximum packet-size to ensure that the packet and an extra
683 NUL character can always fit in the buffer. This stops GDB
684 trashing stubs that try to squeeze an extra NUL into what is
685 already a full buffer (As of 1999-12-04 that was most stubs). */
686 rsa
->remote_packet_size
= 400 - 1;
688 /* This one is filled in when a ``g'' packet is received. */
689 rsa
->actual_register_packet_size
= 0;
691 /* Should rsa->sizeof_g_packet needs more space than the
692 default, adjust the size accordingly. Remember that each byte is
693 encoded as two characters. 32 is the overhead for the packet
694 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
695 (``$NN:G...#NN'') is a better guess, the below has been padded a
697 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
698 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
700 /* Make sure that the packet buffer is plenty big enough for
701 this architecture. */
702 if (rs
->buf_size
< rsa
->remote_packet_size
)
704 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
705 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
711 /* Return the current allowed size of a remote packet. This is
712 inferred from the current architecture, and should be used to
713 limit the length of outgoing packets. */
715 get_remote_packet_size (void)
717 struct remote_state
*rs
= get_remote_state ();
718 struct remote_arch_state
*rsa
= get_remote_arch_state ();
720 if (rs
->explicit_packet_size
)
721 return rs
->explicit_packet_size
;
723 return rsa
->remote_packet_size
;
726 static struct packet_reg
*
727 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
729 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
733 struct packet_reg
*r
= &rsa
->regs
[regnum
];
735 gdb_assert (r
->regnum
== regnum
);
740 static struct packet_reg
*
741 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
745 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
747 struct packet_reg
*r
= &rsa
->regs
[i
];
755 /* FIXME: graces/2002-08-08: These variables should eventually be
756 bound to an instance of the target object (as in gdbarch-tdep()),
757 when such a thing exists. */
759 /* This is set to the data address of the access causing the target
760 to stop for a watchpoint. */
761 static CORE_ADDR remote_watch_data_address
;
763 /* This is non-zero if target stopped for a watchpoint. */
764 static int remote_stopped_by_watchpoint_p
;
766 static struct target_ops remote_ops
;
768 static struct target_ops extended_remote_ops
;
770 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
771 ``forever'' still use the normal timeout mechanism. This is
772 currently used by the ASYNC code to guarentee that target reads
773 during the initial connect always time-out. Once getpkt has been
774 modified to return a timeout indication and, in turn
775 remote_wait()/wait_for_inferior() have gained a timeout parameter
777 static int wait_forever_enabled_p
= 1;
779 /* Allow the user to specify what sequence to send to the remote
780 when he requests a program interruption: Although ^C is usually
781 what remote systems expect (this is the default, here), it is
782 sometimes preferable to send a break. On other systems such
783 as the Linux kernel, a break followed by g, which is Magic SysRq g
784 is required in order to interrupt the execution. */
785 const char interrupt_sequence_control_c
[] = "Ctrl-C";
786 const char interrupt_sequence_break
[] = "BREAK";
787 const char interrupt_sequence_break_g
[] = "BREAK-g";
788 static const char *const interrupt_sequence_modes
[] =
790 interrupt_sequence_control_c
,
791 interrupt_sequence_break
,
792 interrupt_sequence_break_g
,
795 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
798 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
799 struct cmd_list_element
*c
,
802 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
803 fprintf_filtered (file
,
804 _("Send the ASCII ETX character (Ctrl-c) "
805 "to the remote target to interrupt the "
806 "execution of the program.\n"));
807 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
808 fprintf_filtered (file
,
809 _("send a break signal to the remote target "
810 "to interrupt the execution of the program.\n"));
811 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
812 fprintf_filtered (file
,
813 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
814 "the remote target to interrupt the execution "
815 "of Linux kernel.\n"));
817 internal_error (__FILE__
, __LINE__
,
818 _("Invalid value for interrupt_sequence_mode: %s."),
819 interrupt_sequence_mode
);
822 /* This boolean variable specifies whether interrupt_sequence is sent
823 to the remote target when gdb connects to it.
824 This is mostly needed when you debug the Linux kernel: The Linux kernel
825 expects BREAK g which is Magic SysRq g for connecting gdb. */
826 static int interrupt_on_connect
= 0;
828 /* This variable is used to implement the "set/show remotebreak" commands.
829 Since these commands are now deprecated in favor of "set/show remote
830 interrupt-sequence", it no longer has any effect on the code. */
831 static int remote_break
;
834 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
837 interrupt_sequence_mode
= interrupt_sequence_break
;
839 interrupt_sequence_mode
= interrupt_sequence_control_c
;
843 show_remotebreak (struct ui_file
*file
, int from_tty
,
844 struct cmd_list_element
*c
,
849 /* This variable sets the number of bits in an address that are to be
850 sent in a memory ("M" or "m") packet. Normally, after stripping
851 leading zeros, the entire address would be sent. This variable
852 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
853 initial implementation of remote.c restricted the address sent in
854 memory packets to ``host::sizeof long'' bytes - (typically 32
855 bits). Consequently, for 64 bit targets, the upper 32 bits of an
856 address was never sent. Since fixing this bug may cause a break in
857 some remote targets this variable is principly provided to
858 facilitate backward compatibility. */
860 static unsigned int remote_address_size
;
862 /* Temporary to track who currently owns the terminal. See
863 remote_terminal_* for more details. */
865 static int remote_async_terminal_ours_p
;
867 /* The executable file to use for "run" on the remote side. */
869 static char *remote_exec_file
= "";
872 /* User configurable variables for the number of characters in a
873 memory read/write packet. MIN (rsa->remote_packet_size,
874 rsa->sizeof_g_packet) is the default. Some targets need smaller
875 values (fifo overruns, et.al.) and some users need larger values
876 (speed up transfers). The variables ``preferred_*'' (the user
877 request), ``current_*'' (what was actually set) and ``forced_*''
878 (Positive - a soft limit, negative - a hard limit). */
880 struct memory_packet_config
887 /* Compute the current size of a read/write packet. Since this makes
888 use of ``actual_register_packet_size'' the computation is dynamic. */
891 get_memory_packet_size (struct memory_packet_config
*config
)
893 struct remote_state
*rs
= get_remote_state ();
894 struct remote_arch_state
*rsa
= get_remote_arch_state ();
896 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
897 law?) that some hosts don't cope very well with large alloca()
898 calls. Eventually the alloca() code will be replaced by calls to
899 xmalloc() and make_cleanups() allowing this restriction to either
900 be lifted or removed. */
901 #ifndef MAX_REMOTE_PACKET_SIZE
902 #define MAX_REMOTE_PACKET_SIZE 16384
904 /* NOTE: 20 ensures we can write at least one byte. */
905 #ifndef MIN_REMOTE_PACKET_SIZE
906 #define MIN_REMOTE_PACKET_SIZE 20
911 if (config
->size
<= 0)
912 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
914 what_they_get
= config
->size
;
918 what_they_get
= get_remote_packet_size ();
919 /* Limit the packet to the size specified by the user. */
921 && what_they_get
> config
->size
)
922 what_they_get
= config
->size
;
924 /* Limit it to the size of the targets ``g'' response unless we have
925 permission from the stub to use a larger packet size. */
926 if (rs
->explicit_packet_size
== 0
927 && rsa
->actual_register_packet_size
> 0
928 && what_they_get
> rsa
->actual_register_packet_size
)
929 what_they_get
= rsa
->actual_register_packet_size
;
931 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
932 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
933 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
934 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
936 /* Make sure there is room in the global buffer for this packet
937 (including its trailing NUL byte). */
938 if (rs
->buf_size
< what_they_get
+ 1)
940 rs
->buf_size
= 2 * what_they_get
;
941 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
944 return what_they_get
;
947 /* Update the size of a read/write packet. If they user wants
948 something really big then do a sanity check. */
951 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
953 int fixed_p
= config
->fixed_p
;
954 long size
= config
->size
;
957 error (_("Argument required (integer, `fixed' or `limited')."));
958 else if (strcmp (args
, "hard") == 0
959 || strcmp (args
, "fixed") == 0)
961 else if (strcmp (args
, "soft") == 0
962 || strcmp (args
, "limit") == 0)
968 size
= strtoul (args
, &end
, 0);
970 error (_("Invalid %s (bad syntax)."), config
->name
);
972 /* Instead of explicitly capping the size of a packet to
973 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
974 instead allowed to set the size to something arbitrarily
976 if (size
> MAX_REMOTE_PACKET_SIZE
)
977 error (_("Invalid %s (too large)."), config
->name
);
981 if (fixed_p
&& !config
->fixed_p
)
983 if (! query (_("The target may not be able to correctly handle a %s\n"
984 "of %ld bytes. Change the packet size? "),
986 error (_("Packet size not changed."));
988 /* Update the config. */
989 config
->fixed_p
= fixed_p
;
994 show_memory_packet_size (struct memory_packet_config
*config
)
996 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
998 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
999 get_memory_packet_size (config
));
1001 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1002 get_memory_packet_size (config
));
1005 static struct memory_packet_config memory_write_packet_config
=
1007 "memory-write-packet-size",
1011 set_memory_write_packet_size (char *args
, int from_tty
)
1013 set_memory_packet_size (args
, &memory_write_packet_config
);
1017 show_memory_write_packet_size (char *args
, int from_tty
)
1019 show_memory_packet_size (&memory_write_packet_config
);
1023 get_memory_write_packet_size (void)
1025 return get_memory_packet_size (&memory_write_packet_config
);
1028 static struct memory_packet_config memory_read_packet_config
=
1030 "memory-read-packet-size",
1034 set_memory_read_packet_size (char *args
, int from_tty
)
1036 set_memory_packet_size (args
, &memory_read_packet_config
);
1040 show_memory_read_packet_size (char *args
, int from_tty
)
1042 show_memory_packet_size (&memory_read_packet_config
);
1046 get_memory_read_packet_size (void)
1048 long size
= get_memory_packet_size (&memory_read_packet_config
);
1050 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1051 extra buffer size argument before the memory read size can be
1052 increased beyond this. */
1053 if (size
> get_remote_packet_size ())
1054 size
= get_remote_packet_size ();
1059 /* Generic configuration support for packets the stub optionally
1060 supports. Allows the user to specify the use of the packet as well
1061 as allowing GDB to auto-detect support in the remote stub. */
1065 PACKET_SUPPORT_UNKNOWN
= 0,
1070 struct packet_config
1074 enum auto_boolean detect
;
1075 enum packet_support support
;
1078 /* Analyze a packet's return value and update the packet config
1089 update_packet_config (struct packet_config
*config
)
1091 switch (config
->detect
)
1093 case AUTO_BOOLEAN_TRUE
:
1094 config
->support
= PACKET_ENABLE
;
1096 case AUTO_BOOLEAN_FALSE
:
1097 config
->support
= PACKET_DISABLE
;
1099 case AUTO_BOOLEAN_AUTO
:
1100 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1106 show_packet_config_cmd (struct packet_config
*config
)
1108 char *support
= "internal-error";
1110 switch (config
->support
)
1113 support
= "enabled";
1115 case PACKET_DISABLE
:
1116 support
= "disabled";
1118 case PACKET_SUPPORT_UNKNOWN
:
1119 support
= "unknown";
1122 switch (config
->detect
)
1124 case AUTO_BOOLEAN_AUTO
:
1125 printf_filtered (_("Support for the `%s' packet "
1126 "is auto-detected, currently %s.\n"),
1127 config
->name
, support
);
1129 case AUTO_BOOLEAN_TRUE
:
1130 case AUTO_BOOLEAN_FALSE
:
1131 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1132 config
->name
, support
);
1138 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1139 const char *title
, int legacy
)
1145 config
->name
= name
;
1146 config
->title
= title
;
1147 config
->detect
= AUTO_BOOLEAN_AUTO
;
1148 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1149 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1151 show_doc
= xstrprintf ("Show current use of remote "
1152 "protocol `%s' (%s) packet",
1154 /* set/show TITLE-packet {auto,on,off} */
1155 cmd_name
= xstrprintf ("%s-packet", title
);
1156 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1157 &config
->detect
, set_doc
,
1158 show_doc
, NULL
, /* help_doc */
1159 set_remote_protocol_packet_cmd
,
1160 show_remote_protocol_packet_cmd
,
1161 &remote_set_cmdlist
, &remote_show_cmdlist
);
1162 /* The command code copies the documentation strings. */
1165 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1170 legacy_name
= xstrprintf ("%s-packet", name
);
1171 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1172 &remote_set_cmdlist
);
1173 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1174 &remote_show_cmdlist
);
1178 static enum packet_result
1179 packet_check_result (const char *buf
)
1183 /* The stub recognized the packet request. Check that the
1184 operation succeeded. */
1186 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1188 /* "Enn" - definitly an error. */
1189 return PACKET_ERROR
;
1191 /* Always treat "E." as an error. This will be used for
1192 more verbose error messages, such as E.memtypes. */
1193 if (buf
[0] == 'E' && buf
[1] == '.')
1194 return PACKET_ERROR
;
1196 /* The packet may or may not be OK. Just assume it is. */
1200 /* The stub does not support the packet. */
1201 return PACKET_UNKNOWN
;
1204 static enum packet_result
1205 packet_ok (const char *buf
, struct packet_config
*config
)
1207 enum packet_result result
;
1209 result
= packet_check_result (buf
);
1214 /* The stub recognized the packet request. */
1215 switch (config
->support
)
1217 case PACKET_SUPPORT_UNKNOWN
:
1219 fprintf_unfiltered (gdb_stdlog
,
1220 "Packet %s (%s) is supported\n",
1221 config
->name
, config
->title
);
1222 config
->support
= PACKET_ENABLE
;
1224 case PACKET_DISABLE
:
1225 internal_error (__FILE__
, __LINE__
,
1226 _("packet_ok: attempt to use a disabled packet"));
1232 case PACKET_UNKNOWN
:
1233 /* The stub does not support the packet. */
1234 switch (config
->support
)
1237 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1238 /* If the stub previously indicated that the packet was
1239 supported then there is a protocol error.. */
1240 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1241 config
->name
, config
->title
);
1243 /* The user set it wrong. */
1244 error (_("Enabled packet %s (%s) not recognized by stub"),
1245 config
->name
, config
->title
);
1247 case PACKET_SUPPORT_UNKNOWN
:
1249 fprintf_unfiltered (gdb_stdlog
,
1250 "Packet %s (%s) is NOT supported\n",
1251 config
->name
, config
->title
);
1252 config
->support
= PACKET_DISABLE
;
1254 case PACKET_DISABLE
:
1276 PACKET_vFile_pwrite
,
1278 PACKET_vFile_unlink
,
1279 PACKET_vFile_readlink
,
1281 PACKET_qXfer_features
,
1282 PACKET_qXfer_libraries
,
1283 PACKET_qXfer_libraries_svr4
,
1284 PACKET_qXfer_memory_map
,
1285 PACKET_qXfer_spu_read
,
1286 PACKET_qXfer_spu_write
,
1287 PACKET_qXfer_osdata
,
1288 PACKET_qXfer_threads
,
1289 PACKET_qXfer_statictrace_read
,
1290 PACKET_qXfer_traceframe_info
,
1296 PACKET_QPassSignals
,
1297 PACKET_QProgramSignals
,
1298 PACKET_qSearch_memory
,
1301 PACKET_QStartNoAckMode
,
1303 PACKET_qXfer_siginfo_read
,
1304 PACKET_qXfer_siginfo_write
,
1306 PACKET_ConditionalTracepoints
,
1307 PACKET_ConditionalBreakpoints
,
1308 PACKET_BreakpointCommands
,
1309 PACKET_FastTracepoints
,
1310 PACKET_StaticTracepoints
,
1311 PACKET_InstallInTrace
,
1314 PACKET_TracepointSource
,
1317 PACKET_QDisableRandomization
,
1319 PACKET_QTBuffer_size
,
1322 PACKET_qXfer_btrace
,
1326 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1329 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1330 struct cmd_list_element
*c
)
1332 struct packet_config
*packet
;
1334 for (packet
= remote_protocol_packets
;
1335 packet
< &remote_protocol_packets
[PACKET_MAX
];
1338 if (&packet
->detect
== c
->var
)
1340 update_packet_config (packet
);
1344 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1349 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1350 struct cmd_list_element
*c
,
1353 struct packet_config
*packet
;
1355 for (packet
= remote_protocol_packets
;
1356 packet
< &remote_protocol_packets
[PACKET_MAX
];
1359 if (&packet
->detect
== c
->var
)
1361 show_packet_config_cmd (packet
);
1365 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1369 /* Should we try one of the 'Z' requests? */
1373 Z_PACKET_SOFTWARE_BP
,
1374 Z_PACKET_HARDWARE_BP
,
1381 /* For compatibility with older distributions. Provide a ``set remote
1382 Z-packet ...'' command that updates all the Z packet types. */
1384 static enum auto_boolean remote_Z_packet_detect
;
1387 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1388 struct cmd_list_element
*c
)
1392 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1394 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1395 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1400 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1401 struct cmd_list_element
*c
,
1406 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1408 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1412 /* Should we try the 'ThreadInfo' query packet?
1414 This variable (NOT available to the user: auto-detect only!)
1415 determines whether GDB will use the new, simpler "ThreadInfo"
1416 query or the older, more complex syntax for thread queries.
1417 This is an auto-detect variable (set to true at each connect,
1418 and set to false when the target fails to recognize it). */
1420 static int use_threadinfo_query
;
1421 static int use_threadextra_query
;
1423 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1424 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1425 static struct async_signal_handler
*async_sigint_remote_token
;
1428 /* Asynchronous signal handle registered as event loop source for
1429 when we have pending events ready to be passed to the core. */
1431 static struct async_event_handler
*remote_async_inferior_event_token
;
1435 static ptid_t magic_null_ptid
;
1436 static ptid_t not_sent_ptid
;
1437 static ptid_t any_thread_ptid
;
1439 /* These are the threads which we last sent to the remote system. The
1440 TID member will be -1 for all or -2 for not sent yet. */
1442 static ptid_t general_thread
;
1443 static ptid_t continue_thread
;
1445 /* This is the traceframe which we last selected on the remote system.
1446 It will be -1 if no traceframe is selected. */
1447 static int remote_traceframe_number
= -1;
1449 /* Find out if the stub attached to PID (and hence GDB should offer to
1450 detach instead of killing it when bailing out). */
1453 remote_query_attached (int pid
)
1455 struct remote_state
*rs
= get_remote_state ();
1456 size_t size
= get_remote_packet_size ();
1458 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1461 if (remote_multi_process_p (rs
))
1462 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1464 xsnprintf (rs
->buf
, size
, "qAttached");
1467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1469 switch (packet_ok (rs
->buf
,
1470 &remote_protocol_packets
[PACKET_qAttached
]))
1473 if (strcmp (rs
->buf
, "1") == 0)
1477 warning (_("Remote failure reply: %s"), rs
->buf
);
1479 case PACKET_UNKNOWN
:
1486 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1487 has been invented by GDB, instead of reported by the target. Since
1488 we can be connected to a remote system before before knowing about
1489 any inferior, mark the target with execution when we find the first
1490 inferior. If ATTACHED is 1, then we had just attached to this
1491 inferior. If it is 0, then we just created this inferior. If it
1492 is -1, then try querying the remote stub to find out if it had
1493 attached to the inferior or not. */
1495 static struct inferior
*
1496 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1498 struct inferior
*inf
;
1500 /* Check whether this process we're learning about is to be
1501 considered attached, or if is to be considered to have been
1502 spawned by the stub. */
1504 attached
= remote_query_attached (pid
);
1506 if (gdbarch_has_global_solist (target_gdbarch ()))
1508 /* If the target shares code across all inferiors, then every
1509 attach adds a new inferior. */
1510 inf
= add_inferior (pid
);
1512 /* ... and every inferior is bound to the same program space.
1513 However, each inferior may still have its own address
1515 inf
->aspace
= maybe_new_address_space ();
1516 inf
->pspace
= current_program_space
;
1520 /* In the traditional debugging scenario, there's a 1-1 match
1521 between program/address spaces. We simply bind the inferior
1522 to the program space's address space. */
1523 inf
= current_inferior ();
1524 inferior_appeared (inf
, pid
);
1527 inf
->attach_flag
= attached
;
1528 inf
->fake_pid_p
= fake_pid_p
;
1533 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1534 according to RUNNING. */
1537 remote_add_thread (ptid_t ptid
, int running
)
1541 set_executing (ptid
, running
);
1542 set_running (ptid
, running
);
1545 /* Come here when we learn about a thread id from the remote target.
1546 It may be the first time we hear about such thread, so take the
1547 opportunity to add it to GDB's thread list. In case this is the
1548 first time we're noticing its corresponding inferior, add it to
1549 GDB's inferior list as well. */
1552 remote_notice_new_inferior (ptid_t currthread
, int running
)
1554 /* If this is a new thread, add it to GDB's thread list.
1555 If we leave it up to WFI to do this, bad things will happen. */
1557 if (in_thread_list (currthread
) && is_exited (currthread
))
1559 /* We're seeing an event on a thread id we knew had exited.
1560 This has to be a new thread reusing the old id. Add it. */
1561 remote_add_thread (currthread
, running
);
1565 if (!in_thread_list (currthread
))
1567 struct inferior
*inf
= NULL
;
1568 int pid
= ptid_get_pid (currthread
);
1570 if (ptid_is_pid (inferior_ptid
)
1571 && pid
== ptid_get_pid (inferior_ptid
))
1573 /* inferior_ptid has no thread member yet. This can happen
1574 with the vAttach -> remote_wait,"TAAthread:" path if the
1575 stub doesn't support qC. This is the first stop reported
1576 after an attach, so this is the main thread. Update the
1577 ptid in the thread list. */
1578 if (in_thread_list (pid_to_ptid (pid
)))
1579 thread_change_ptid (inferior_ptid
, currthread
);
1582 remote_add_thread (currthread
, running
);
1583 inferior_ptid
= currthread
;
1588 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1590 /* inferior_ptid is not set yet. This can happen with the
1591 vRun -> remote_wait,"TAAthread:" path if the stub
1592 doesn't support qC. This is the first stop reported
1593 after an attach, so this is the main thread. Update the
1594 ptid in the thread list. */
1595 thread_change_ptid (inferior_ptid
, currthread
);
1599 /* When connecting to a target remote, or to a target
1600 extended-remote which already was debugging an inferior, we
1601 may not know about it yet. Add it before adding its child
1602 thread, so notifications are emitted in a sensible order. */
1603 if (!in_inferior_list (ptid_get_pid (currthread
)))
1605 struct remote_state
*rs
= get_remote_state ();
1606 int fake_pid_p
= !remote_multi_process_p (rs
);
1608 inf
= remote_add_inferior (fake_pid_p
,
1609 ptid_get_pid (currthread
), -1);
1612 /* This is really a new thread. Add it. */
1613 remote_add_thread (currthread
, running
);
1615 /* If we found a new inferior, let the common code do whatever
1616 it needs to with it (e.g., read shared libraries, insert
1619 notice_new_inferior (currthread
, running
, 0);
1623 /* Return the private thread data, creating it if necessary. */
1625 static struct private_thread_info
*
1626 demand_private_info (ptid_t ptid
)
1628 struct thread_info
*info
= find_thread_ptid (ptid
);
1634 info
->private = xmalloc (sizeof (*(info
->private)));
1635 info
->private_dtor
= free_private_thread_info
;
1636 info
->private->core
= -1;
1637 info
->private->extra
= 0;
1640 return info
->private;
1643 /* Call this function as a result of
1644 1) A halt indication (T packet) containing a thread id
1645 2) A direct query of currthread
1646 3) Successful execution of set thread */
1649 record_currthread (ptid_t currthread
)
1651 general_thread
= currthread
;
1654 static char *last_pass_packet
;
1656 /* If 'QPassSignals' is supported, tell the remote stub what signals
1657 it can simply pass through to the inferior without reporting. */
1660 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1662 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1664 char *pass_packet
, *p
;
1667 gdb_assert (numsigs
< 256);
1668 for (i
= 0; i
< numsigs
; i
++)
1670 if (pass_signals
[i
])
1673 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1674 strcpy (pass_packet
, "QPassSignals:");
1675 p
= pass_packet
+ strlen (pass_packet
);
1676 for (i
= 0; i
< numsigs
; i
++)
1678 if (pass_signals
[i
])
1681 *p
++ = tohex (i
>> 4);
1682 *p
++ = tohex (i
& 15);
1691 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1693 struct remote_state
*rs
= get_remote_state ();
1694 char *buf
= rs
->buf
;
1696 putpkt (pass_packet
);
1697 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1698 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1699 if (last_pass_packet
)
1700 xfree (last_pass_packet
);
1701 last_pass_packet
= pass_packet
;
1704 xfree (pass_packet
);
1708 /* The last QProgramSignals packet sent to the target. We bypass
1709 sending a new program signals list down to the target if the new
1710 packet is exactly the same as the last we sent. IOW, we only let
1711 the target know about program signals list changes. */
1713 static char *last_program_signals_packet
;
1715 /* If 'QProgramSignals' is supported, tell the remote stub what
1716 signals it should pass through to the inferior when detaching. */
1719 remote_program_signals (int numsigs
, unsigned char *signals
)
1721 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1726 gdb_assert (numsigs
< 256);
1727 for (i
= 0; i
< numsigs
; i
++)
1732 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1733 strcpy (packet
, "QProgramSignals:");
1734 p
= packet
+ strlen (packet
);
1735 for (i
= 0; i
< numsigs
; i
++)
1737 if (signal_pass_state (i
))
1740 *p
++ = tohex (i
>> 4);
1741 *p
++ = tohex (i
& 15);
1750 if (!last_program_signals_packet
1751 || strcmp (last_program_signals_packet
, packet
) != 0)
1753 struct remote_state
*rs
= get_remote_state ();
1754 char *buf
= rs
->buf
;
1757 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1758 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1759 xfree (last_program_signals_packet
);
1760 last_program_signals_packet
= packet
;
1767 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1768 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1769 thread. If GEN is set, set the general thread, if not, then set
1770 the step/continue thread. */
1772 set_thread (struct ptid ptid
, int gen
)
1774 struct remote_state
*rs
= get_remote_state ();
1775 ptid_t state
= gen
? general_thread
: continue_thread
;
1776 char *buf
= rs
->buf
;
1777 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1779 if (ptid_equal (state
, ptid
))
1783 *buf
++ = gen
? 'g' : 'c';
1784 if (ptid_equal (ptid
, magic_null_ptid
))
1785 xsnprintf (buf
, endbuf
- buf
, "0");
1786 else if (ptid_equal (ptid
, any_thread_ptid
))
1787 xsnprintf (buf
, endbuf
- buf
, "0");
1788 else if (ptid_equal (ptid
, minus_one_ptid
))
1789 xsnprintf (buf
, endbuf
- buf
, "-1");
1791 write_ptid (buf
, endbuf
, ptid
);
1793 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1795 general_thread
= ptid
;
1797 continue_thread
= ptid
;
1801 set_general_thread (struct ptid ptid
)
1803 set_thread (ptid
, 1);
1807 set_continue_thread (struct ptid ptid
)
1809 set_thread (ptid
, 0);
1812 /* Change the remote current process. Which thread within the process
1813 ends up selected isn't important, as long as it is the same process
1814 as what INFERIOR_PTID points to.
1816 This comes from that fact that there is no explicit notion of
1817 "selected process" in the protocol. The selected process for
1818 general operations is the process the selected general thread
1822 set_general_process (void)
1824 struct remote_state
*rs
= get_remote_state ();
1826 /* If the remote can't handle multiple processes, don't bother. */
1827 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1830 /* We only need to change the remote current thread if it's pointing
1831 at some other process. */
1832 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1833 set_general_thread (inferior_ptid
);
1837 /* Return nonzero if the thread PTID is still alive on the remote
1841 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1843 struct remote_state
*rs
= get_remote_state ();
1846 if (ptid_equal (ptid
, magic_null_ptid
))
1847 /* The main thread is always alive. */
1850 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1851 /* The main thread is always alive. This can happen after a
1852 vAttach, if the remote side doesn't support
1857 endp
= rs
->buf
+ get_remote_packet_size ();
1860 write_ptid (p
, endp
, ptid
);
1863 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1864 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1867 /* About these extended threadlist and threadinfo packets. They are
1868 variable length packets but, the fields within them are often fixed
1869 length. They are redundent enough to send over UDP as is the
1870 remote protocol in general. There is a matching unit test module
1873 #define OPAQUETHREADBYTES 8
1875 /* a 64 bit opaque identifier */
1876 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1878 /* WARNING: This threadref data structure comes from the remote O.S.,
1879 libstub protocol encoding, and remote.c. It is not particularly
1882 /* Right now, the internal structure is int. We want it to be bigger.
1883 Plan to fix this. */
1885 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1887 /* gdb_ext_thread_info is an internal GDB data structure which is
1888 equivalent to the reply of the remote threadinfo packet. */
1890 struct gdb_ext_thread_info
1892 threadref threadid
; /* External form of thread reference. */
1893 int active
; /* Has state interesting to GDB?
1895 char display
[256]; /* Brief state display, name,
1896 blocked/suspended. */
1897 char shortname
[32]; /* To be used to name threads. */
1898 char more_display
[256]; /* Long info, statistics, queue depth,
1902 /* The volume of remote transfers can be limited by submitting
1903 a mask containing bits specifying the desired information.
1904 Use a union of these values as the 'selection' parameter to
1905 get_thread_info. FIXME: Make these TAG names more thread specific. */
1907 #define TAG_THREADID 1
1908 #define TAG_EXISTS 2
1909 #define TAG_DISPLAY 4
1910 #define TAG_THREADNAME 8
1911 #define TAG_MOREDISPLAY 16
1913 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1915 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1917 static char *unpack_nibble (char *buf
, int *val
);
1919 static char *pack_nibble (char *buf
, int nibble
);
1921 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1923 static char *unpack_byte (char *buf
, int *value
);
1925 static char *pack_int (char *buf
, int value
);
1927 static char *unpack_int (char *buf
, int *value
);
1929 static char *unpack_string (char *src
, char *dest
, int length
);
1931 static char *pack_threadid (char *pkt
, threadref
*id
);
1933 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1935 void int_to_threadref (threadref
*id
, int value
);
1937 static int threadref_to_int (threadref
*ref
);
1939 static void copy_threadref (threadref
*dest
, threadref
*src
);
1941 static int threadmatch (threadref
*dest
, threadref
*src
);
1943 static char *pack_threadinfo_request (char *pkt
, int mode
,
1946 static int remote_unpack_thread_info_response (char *pkt
,
1947 threadref
*expectedref
,
1948 struct gdb_ext_thread_info
1952 static int remote_get_threadinfo (threadref
*threadid
,
1953 int fieldset
, /*TAG mask */
1954 struct gdb_ext_thread_info
*info
);
1956 static char *pack_threadlist_request (char *pkt
, int startflag
,
1958 threadref
*nextthread
);
1960 static int parse_threadlist_response (char *pkt
,
1962 threadref
*original_echo
,
1963 threadref
*resultlist
,
1966 static int remote_get_threadlist (int startflag
,
1967 threadref
*nextthread
,
1971 threadref
*threadlist
);
1973 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1975 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1976 void *context
, int looplimit
);
1978 static int remote_newthread_step (threadref
*ref
, void *context
);
1981 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1982 buffer we're allowed to write to. Returns
1983 BUF+CHARACTERS_WRITTEN. */
1986 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1989 struct remote_state
*rs
= get_remote_state ();
1991 if (remote_multi_process_p (rs
))
1993 pid
= ptid_get_pid (ptid
);
1995 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1997 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1999 tid
= ptid_get_tid (ptid
);
2001 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2003 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2008 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2009 passed the last parsed char. Returns null_ptid on error. */
2012 read_ptid (char *buf
, char **obuf
)
2016 ULONGEST pid
= 0, tid
= 0;
2020 /* Multi-process ptid. */
2021 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2023 error (_("invalid remote ptid: %s"), p
);
2026 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2029 return ptid_build (pid
, 0, tid
);
2032 /* No multi-process. Just a tid. */
2033 pp
= unpack_varlen_hex (p
, &tid
);
2035 /* Since the stub is not sending a process id, then default to
2036 what's in inferior_ptid, unless it's null at this point. If so,
2037 then since there's no way to know the pid of the reported
2038 threads, use the magic number. */
2039 if (ptid_equal (inferior_ptid
, null_ptid
))
2040 pid
= ptid_get_pid (magic_null_ptid
);
2042 pid
= ptid_get_pid (inferior_ptid
);
2046 return ptid_build (pid
, 0, tid
);
2049 /* Encode 64 bits in 16 chars of hex. */
2051 static const char hexchars
[] = "0123456789abcdef";
2054 ishex (int ch
, int *val
)
2056 if ((ch
>= 'a') && (ch
<= 'f'))
2058 *val
= ch
- 'a' + 10;
2061 if ((ch
>= 'A') && (ch
<= 'F'))
2063 *val
= ch
- 'A' + 10;
2066 if ((ch
>= '0') && (ch
<= '9'))
2077 if (ch
>= 'a' && ch
<= 'f')
2078 return ch
- 'a' + 10;
2079 if (ch
>= '0' && ch
<= '9')
2081 if (ch
>= 'A' && ch
<= 'F')
2082 return ch
- 'A' + 10;
2087 stub_unpack_int (char *buff
, int fieldlength
)
2094 nibble
= stubhex (*buff
++);
2098 retval
= retval
<< 4;
2104 unpack_varlen_hex (char *buff
, /* packet to parse */
2108 ULONGEST retval
= 0;
2110 while (ishex (*buff
, &nibble
))
2113 retval
= retval
<< 4;
2114 retval
|= nibble
& 0x0f;
2121 unpack_nibble (char *buf
, int *val
)
2123 *val
= fromhex (*buf
++);
2128 pack_nibble (char *buf
, int nibble
)
2130 *buf
++ = hexchars
[(nibble
& 0x0f)];
2135 pack_hex_byte (char *pkt
, int byte
)
2137 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2138 *pkt
++ = hexchars
[(byte
& 0xf)];
2143 unpack_byte (char *buf
, int *value
)
2145 *value
= stub_unpack_int (buf
, 2);
2150 pack_int (char *buf
, int value
)
2152 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2153 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2154 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2155 buf
= pack_hex_byte (buf
, (value
& 0xff));
2160 unpack_int (char *buf
, int *value
)
2162 *value
= stub_unpack_int (buf
, 8);
2166 #if 0 /* Currently unused, uncomment when needed. */
2167 static char *pack_string (char *pkt
, char *string
);
2170 pack_string (char *pkt
, char *string
)
2175 len
= strlen (string
);
2177 len
= 200; /* Bigger than most GDB packets, junk??? */
2178 pkt
= pack_hex_byte (pkt
, len
);
2182 if ((ch
== '\0') || (ch
== '#'))
2183 ch
= '*'; /* Protect encapsulation. */
2188 #endif /* 0 (unused) */
2191 unpack_string (char *src
, char *dest
, int length
)
2200 pack_threadid (char *pkt
, threadref
*id
)
2203 unsigned char *altid
;
2205 altid
= (unsigned char *) id
;
2206 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2208 pkt
= pack_hex_byte (pkt
, *altid
++);
2214 unpack_threadid (char *inbuf
, threadref
*id
)
2217 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2220 altref
= (char *) id
;
2222 while (inbuf
< limit
)
2224 x
= stubhex (*inbuf
++);
2225 y
= stubhex (*inbuf
++);
2226 *altref
++ = (x
<< 4) | y
;
2231 /* Externally, threadrefs are 64 bits but internally, they are still
2232 ints. This is due to a mismatch of specifications. We would like
2233 to use 64bit thread references internally. This is an adapter
2237 int_to_threadref (threadref
*id
, int value
)
2239 unsigned char *scan
;
2241 scan
= (unsigned char *) id
;
2247 *scan
++ = (value
>> 24) & 0xff;
2248 *scan
++ = (value
>> 16) & 0xff;
2249 *scan
++ = (value
>> 8) & 0xff;
2250 *scan
++ = (value
& 0xff);
2254 threadref_to_int (threadref
*ref
)
2257 unsigned char *scan
;
2263 value
= (value
<< 8) | ((*scan
++) & 0xff);
2268 copy_threadref (threadref
*dest
, threadref
*src
)
2271 unsigned char *csrc
, *cdest
;
2273 csrc
= (unsigned char *) src
;
2274 cdest
= (unsigned char *) dest
;
2281 threadmatch (threadref
*dest
, threadref
*src
)
2283 /* Things are broken right now, so just assume we got a match. */
2285 unsigned char *srcp
, *destp
;
2287 srcp
= (char *) src
;
2288 destp
= (char *) dest
;
2292 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2299 threadid:1, # always request threadid
2306 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2309 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2311 *pkt
++ = 'q'; /* Info Query */
2312 *pkt
++ = 'P'; /* process or thread info */
2313 pkt
= pack_int (pkt
, mode
); /* mode */
2314 pkt
= pack_threadid (pkt
, id
); /* threadid */
2315 *pkt
= '\0'; /* terminate */
2319 /* These values tag the fields in a thread info response packet. */
2320 /* Tagging the fields allows us to request specific fields and to
2321 add more fields as time goes by. */
2323 #define TAG_THREADID 1 /* Echo the thread identifier. */
2324 #define TAG_EXISTS 2 /* Is this process defined enough to
2325 fetch registers and its stack? */
2326 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2327 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2328 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2332 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2333 struct gdb_ext_thread_info
*info
)
2335 struct remote_state
*rs
= get_remote_state ();
2339 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2342 /* info->threadid = 0; FIXME: implement zero_threadref. */
2344 info
->display
[0] = '\0';
2345 info
->shortname
[0] = '\0';
2346 info
->more_display
[0] = '\0';
2348 /* Assume the characters indicating the packet type have been
2350 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2351 pkt
= unpack_threadid (pkt
, &ref
);
2354 warning (_("Incomplete response to threadinfo request."));
2355 if (!threadmatch (&ref
, expectedref
))
2356 { /* This is an answer to a different request. */
2357 warning (_("ERROR RMT Thread info mismatch."));
2360 copy_threadref (&info
->threadid
, &ref
);
2362 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2364 /* Packets are terminated with nulls. */
2365 while ((pkt
< limit
) && mask
&& *pkt
)
2367 pkt
= unpack_int (pkt
, &tag
); /* tag */
2368 pkt
= unpack_byte (pkt
, &length
); /* length */
2369 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2371 warning (_("ERROR RMT: threadinfo tag mismatch."));
2375 if (tag
== TAG_THREADID
)
2379 warning (_("ERROR RMT: length of threadid is not 16."));
2383 pkt
= unpack_threadid (pkt
, &ref
);
2384 mask
= mask
& ~TAG_THREADID
;
2387 if (tag
== TAG_EXISTS
)
2389 info
->active
= stub_unpack_int (pkt
, length
);
2391 mask
= mask
& ~(TAG_EXISTS
);
2394 warning (_("ERROR RMT: 'exists' length too long."));
2400 if (tag
== TAG_THREADNAME
)
2402 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2403 mask
= mask
& ~TAG_THREADNAME
;
2406 if (tag
== TAG_DISPLAY
)
2408 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2409 mask
= mask
& ~TAG_DISPLAY
;
2412 if (tag
== TAG_MOREDISPLAY
)
2414 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2415 mask
= mask
& ~TAG_MOREDISPLAY
;
2418 warning (_("ERROR RMT: unknown thread info tag."));
2419 break; /* Not a tag we know about. */
2425 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2426 struct gdb_ext_thread_info
*info
)
2428 struct remote_state
*rs
= get_remote_state ();
2431 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2433 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2435 if (rs
->buf
[0] == '\0')
2438 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2443 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2446 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2447 threadref
*nextthread
)
2449 *pkt
++ = 'q'; /* info query packet */
2450 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2451 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2452 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2453 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2458 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2461 parse_threadlist_response (char *pkt
, int result_limit
,
2462 threadref
*original_echo
, threadref
*resultlist
,
2465 struct remote_state
*rs
= get_remote_state ();
2467 int count
, resultcount
, done
;
2470 /* Assume the 'q' and 'M chars have been stripped. */
2471 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2472 /* done parse past here */
2473 pkt
= unpack_byte (pkt
, &count
); /* count field */
2474 pkt
= unpack_nibble (pkt
, &done
);
2475 /* The first threadid is the argument threadid. */
2476 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2477 while ((count
-- > 0) && (pkt
< limit
))
2479 pkt
= unpack_threadid (pkt
, resultlist
++);
2480 if (resultcount
++ >= result_limit
)
2489 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2490 int *done
, int *result_count
, threadref
*threadlist
)
2492 struct remote_state
*rs
= get_remote_state ();
2493 static threadref echo_nextthread
;
2496 /* Trancate result limit to be smaller than the packet size. */
2497 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2498 >= get_remote_packet_size ())
2499 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2501 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2503 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2505 if (*rs
->buf
== '\0')
2509 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2512 if (!threadmatch (&echo_nextthread
, nextthread
))
2514 /* FIXME: This is a good reason to drop the packet. */
2515 /* Possably, there is a duplicate response. */
2517 retransmit immediatly - race conditions
2518 retransmit after timeout - yes
2520 wait for packet, then exit
2522 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2523 return 0; /* I choose simply exiting. */
2525 if (*result_count
<= 0)
2529 warning (_("RMT ERROR : failed to get remote thread list."));
2532 return result
; /* break; */
2534 if (*result_count
> result_limit
)
2537 warning (_("RMT ERROR: threadlist response longer than requested."));
2543 /* This is the interface between remote and threads, remotes upper
2546 /* remote_find_new_threads retrieves the thread list and for each
2547 thread in the list, looks up the thread in GDB's internal list,
2548 adding the thread if it does not already exist. This involves
2549 getting partial thread lists from the remote target so, polling the
2550 quit_flag is required. */
2553 /* About this many threadisds fit in a packet. */
2555 #define MAXTHREADLISTRESULTS 32
2558 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2561 int done
, i
, result_count
;
2565 static threadref nextthread
;
2566 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2571 if (loopcount
++ > looplimit
)
2574 warning (_("Remote fetch threadlist -infinite loop-."));
2577 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2578 &done
, &result_count
, resultthreadlist
))
2583 /* Clear for later iterations. */
2585 /* Setup to resume next batch of thread references, set nextthread. */
2586 if (result_count
>= 1)
2587 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2589 while (result_count
--)
2590 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2597 remote_newthread_step (threadref
*ref
, void *context
)
2599 int pid
= ptid_get_pid (inferior_ptid
);
2600 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2602 if (!in_thread_list (ptid
))
2604 return 1; /* continue iterator */
2607 #define CRAZY_MAX_THREADS 1000
2610 remote_current_thread (ptid_t oldpid
)
2612 struct remote_state
*rs
= get_remote_state ();
2615 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2616 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2617 return read_ptid (&rs
->buf
[2], NULL
);
2622 /* Find new threads for info threads command.
2623 * Original version, using John Metzler's thread protocol.
2627 remote_find_new_threads (void)
2629 remote_threadlist_iterator (remote_newthread_step
, 0,
2633 #if defined(HAVE_LIBEXPAT)
2635 typedef struct thread_item
2641 DEF_VEC_O(thread_item_t
);
2643 struct threads_parsing_context
2645 VEC (thread_item_t
) *items
;
2649 start_thread (struct gdb_xml_parser
*parser
,
2650 const struct gdb_xml_element
*element
,
2651 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2653 struct threads_parsing_context
*data
= user_data
;
2655 struct thread_item item
;
2657 struct gdb_xml_value
*attr
;
2659 id
= xml_find_attribute (attributes
, "id")->value
;
2660 item
.ptid
= read_ptid (id
, NULL
);
2662 attr
= xml_find_attribute (attributes
, "core");
2664 item
.core
= *(ULONGEST
*) attr
->value
;
2670 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2674 end_thread (struct gdb_xml_parser
*parser
,
2675 const struct gdb_xml_element
*element
,
2676 void *user_data
, const char *body_text
)
2678 struct threads_parsing_context
*data
= user_data
;
2680 if (body_text
&& *body_text
)
2681 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2684 const struct gdb_xml_attribute thread_attributes
[] = {
2685 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2686 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2687 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2690 const struct gdb_xml_element thread_children
[] = {
2691 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2694 const struct gdb_xml_element threads_children
[] = {
2695 { "thread", thread_attributes
, thread_children
,
2696 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2697 start_thread
, end_thread
},
2698 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2701 const struct gdb_xml_element threads_elements
[] = {
2702 { "threads", NULL
, threads_children
,
2703 GDB_XML_EF_NONE
, NULL
, NULL
},
2704 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2707 /* Discard the contents of the constructed thread info context. */
2710 clear_threads_parsing_context (void *p
)
2712 struct threads_parsing_context
*context
= p
;
2714 struct thread_item
*item
;
2716 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2717 xfree (item
->extra
);
2719 VEC_free (thread_item_t
, context
->items
);
2725 * Find all threads for info threads command.
2726 * Uses new thread protocol contributed by Cisco.
2727 * Falls back and attempts to use the older method (above)
2728 * if the target doesn't respond to the new method.
2732 remote_threads_info (struct target_ops
*ops
)
2734 struct remote_state
*rs
= get_remote_state ();
2738 if (rs
->remote_desc
== 0) /* paranoia */
2739 error (_("Command can only be used when connected to the remote target."));
2741 #if defined(HAVE_LIBEXPAT)
2742 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2744 char *xml
= target_read_stralloc (¤t_target
,
2745 TARGET_OBJECT_THREADS
, NULL
);
2747 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2751 struct threads_parsing_context context
;
2753 context
.items
= NULL
;
2754 make_cleanup (clear_threads_parsing_context
, &context
);
2756 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2757 threads_elements
, xml
, &context
) == 0)
2760 struct thread_item
*item
;
2763 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2766 if (!ptid_equal (item
->ptid
, null_ptid
))
2768 struct private_thread_info
*info
;
2769 /* In non-stop mode, we assume new found threads
2770 are running until proven otherwise with a
2771 stop reply. In all-stop, we can only get
2772 here if all threads are stopped. */
2773 int running
= non_stop
? 1 : 0;
2775 remote_notice_new_inferior (item
->ptid
, running
);
2777 info
= demand_private_info (item
->ptid
);
2778 info
->core
= item
->core
;
2779 info
->extra
= item
->extra
;
2786 do_cleanups (back_to
);
2791 if (use_threadinfo_query
)
2793 putpkt ("qfThreadInfo");
2794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2796 if (bufp
[0] != '\0') /* q packet recognized */
2798 struct cleanup
*old_chain
;
2801 /* remote_notice_new_inferior (in the loop below) may make
2802 new RSP calls, which clobber rs->buf. Work with a
2804 bufp
= saved_reply
= xstrdup (rs
->buf
);
2805 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2807 while (*bufp
++ == 'm') /* reply contains one or more TID */
2811 new_thread
= read_ptid (bufp
, &bufp
);
2812 if (!ptid_equal (new_thread
, null_ptid
))
2814 /* In non-stop mode, we assume new found threads
2815 are running until proven otherwise with a
2816 stop reply. In all-stop, we can only get
2817 here if all threads are stopped. */
2818 int running
= non_stop
? 1 : 0;
2820 remote_notice_new_inferior (new_thread
, running
);
2823 while (*bufp
++ == ','); /* comma-separated list */
2824 free_current_contents (&saved_reply
);
2825 putpkt ("qsThreadInfo");
2826 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2827 bufp
= saved_reply
= xstrdup (rs
->buf
);
2829 do_cleanups (old_chain
);
2834 /* Only qfThreadInfo is supported in non-stop mode. */
2838 /* Else fall back to old method based on jmetzler protocol. */
2839 use_threadinfo_query
= 0;
2840 remote_find_new_threads ();
2845 * Collect a descriptive string about the given thread.
2846 * The target may say anything it wants to about the thread
2847 * (typically info about its blocked / runnable state, name, etc.).
2848 * This string will appear in the info threads display.
2850 * Optional: targets are not required to implement this function.
2854 remote_threads_extra_info (struct thread_info
*tp
)
2856 struct remote_state
*rs
= get_remote_state ();
2860 struct gdb_ext_thread_info threadinfo
;
2861 static char display_buf
[100]; /* arbitrary... */
2862 int n
= 0; /* position in display_buf */
2864 if (rs
->remote_desc
== 0) /* paranoia */
2865 internal_error (__FILE__
, __LINE__
,
2866 _("remote_threads_extra_info"));
2868 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2869 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2870 /* This is the main thread which was added by GDB. The remote
2871 server doesn't know about it. */
2874 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2876 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2878 if (info
&& info
->private)
2879 return info
->private->extra
;
2884 if (use_threadextra_query
)
2887 char *endb
= rs
->buf
+ get_remote_packet_size ();
2889 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2891 write_ptid (b
, endb
, tp
->ptid
);
2894 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2895 if (rs
->buf
[0] != 0)
2897 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2898 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2899 display_buf
[result
] = '\0';
2904 /* If the above query fails, fall back to the old method. */
2905 use_threadextra_query
= 0;
2906 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2907 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2908 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2909 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2910 if (threadinfo
.active
)
2912 if (*threadinfo
.shortname
)
2913 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2914 " Name: %s,", threadinfo
.shortname
);
2915 if (*threadinfo
.display
)
2916 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2917 " State: %s,", threadinfo
.display
);
2918 if (*threadinfo
.more_display
)
2919 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2920 " Priority: %s", threadinfo
.more_display
);
2924 /* For purely cosmetic reasons, clear up trailing commas. */
2925 if (',' == display_buf
[n
-1])
2926 display_buf
[n
-1] = ' ';
2935 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2936 struct static_tracepoint_marker
*marker
)
2938 struct remote_state
*rs
= get_remote_state ();
2941 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2943 p
+= hexnumstr (p
, addr
);
2945 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2949 error (_("Remote failure reply: %s"), p
);
2953 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2960 static VEC(static_tracepoint_marker_p
) *
2961 remote_static_tracepoint_markers_by_strid (const char *strid
)
2963 struct remote_state
*rs
= get_remote_state ();
2964 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2965 struct static_tracepoint_marker
*marker
= NULL
;
2966 struct cleanup
*old_chain
;
2969 /* Ask for a first packet of static tracepoint marker
2972 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2975 error (_("Remote failure reply: %s"), p
);
2977 old_chain
= make_cleanup (free_current_marker
, &marker
);
2982 marker
= XCNEW (struct static_tracepoint_marker
);
2986 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2988 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2990 VEC_safe_push (static_tracepoint_marker_p
,
2996 release_static_tracepoint_marker (marker
);
2997 memset (marker
, 0, sizeof (*marker
));
3000 while (*p
++ == ','); /* comma-separated list */
3001 /* Ask for another packet of static tracepoint definition. */
3003 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3007 do_cleanups (old_chain
);
3012 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3015 remote_get_ada_task_ptid (long lwp
, long thread
)
3017 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
3021 /* Restart the remote side; this is an extended protocol operation. */
3024 extended_remote_restart (void)
3026 struct remote_state
*rs
= get_remote_state ();
3028 /* Send the restart command; for reasons I don't understand the
3029 remote side really expects a number after the "R". */
3030 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3033 remote_fileio_reset ();
3036 /* Clean up connection to a remote debugger. */
3041 struct remote_state
*rs
= get_remote_state ();
3043 if (rs
->remote_desc
== NULL
)
3044 return; /* already closed */
3046 /* Make sure we leave stdin registered in the event loop, and we
3047 don't leave the async SIGINT signal handler installed. */
3048 remote_terminal_ours ();
3050 serial_close (rs
->remote_desc
);
3051 rs
->remote_desc
= NULL
;
3053 /* We don't have a connection to the remote stub anymore. Get rid
3054 of all the inferiors and their threads we were controlling.
3055 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3056 will be unable to find the thread corresponding to (pid, 0, 0). */
3057 inferior_ptid
= null_ptid
;
3058 discard_all_inferiors ();
3060 /* Stop replies may from inferiors which are still unknown to GDB.
3061 We are closing the remote target, so we should discard
3062 everything, including the stop replies from GDB-unknown
3064 discard_pending_stop_replies (NULL
);
3066 if (remote_async_inferior_event_token
)
3067 delete_async_event_handler (&remote_async_inferior_event_token
);
3069 remote_notif_unregister_async_event_handler ();
3071 trace_reset_local_state ();
3074 /* Query the remote side for the text, data and bss offsets. */
3079 struct remote_state
*rs
= get_remote_state ();
3082 int lose
, num_segments
= 0, do_sections
, do_segments
;
3083 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3084 struct section_offsets
*offs
;
3085 struct symfile_segment_data
*data
;
3087 if (symfile_objfile
== NULL
)
3090 putpkt ("qOffsets");
3091 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3094 if (buf
[0] == '\000')
3095 return; /* Return silently. Stub doesn't support
3099 warning (_("Remote failure reply: %s"), buf
);
3103 /* Pick up each field in turn. This used to be done with scanf, but
3104 scanf will make trouble if CORE_ADDR size doesn't match
3105 conversion directives correctly. The following code will work
3106 with any size of CORE_ADDR. */
3107 text_addr
= data_addr
= bss_addr
= 0;
3111 if (strncmp (ptr
, "Text=", 5) == 0)
3114 /* Don't use strtol, could lose on big values. */
3115 while (*ptr
&& *ptr
!= ';')
3116 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3118 if (strncmp (ptr
, ";Data=", 6) == 0)
3121 while (*ptr
&& *ptr
!= ';')
3122 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3127 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3130 while (*ptr
&& *ptr
!= ';')
3131 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3133 if (bss_addr
!= data_addr
)
3134 warning (_("Target reported unsupported offsets: %s"), buf
);
3139 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3142 /* Don't use strtol, could lose on big values. */
3143 while (*ptr
&& *ptr
!= ';')
3144 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3147 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3150 while (*ptr
&& *ptr
!= ';')
3151 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3159 error (_("Malformed response to offset query, %s"), buf
);
3160 else if (*ptr
!= '\0')
3161 warning (_("Target reported unsupported offsets: %s"), buf
);
3163 offs
= ((struct section_offsets
*)
3164 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3165 memcpy (offs
, symfile_objfile
->section_offsets
,
3166 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3168 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3169 do_segments
= (data
!= NULL
);
3170 do_sections
= num_segments
== 0;
3172 if (num_segments
> 0)
3174 segments
[0] = text_addr
;
3175 segments
[1] = data_addr
;
3177 /* If we have two segments, we can still try to relocate everything
3178 by assuming that the .text and .data offsets apply to the whole
3179 text and data segments. Convert the offsets given in the packet
3180 to base addresses for symfile_map_offsets_to_segments. */
3181 else if (data
&& data
->num_segments
== 2)
3183 segments
[0] = data
->segment_bases
[0] + text_addr
;
3184 segments
[1] = data
->segment_bases
[1] + data_addr
;
3187 /* If the object file has only one segment, assume that it is text
3188 rather than data; main programs with no writable data are rare,
3189 but programs with no code are useless. Of course the code might
3190 have ended up in the data segment... to detect that we would need
3191 the permissions here. */
3192 else if (data
&& data
->num_segments
== 1)
3194 segments
[0] = data
->segment_bases
[0] + text_addr
;
3197 /* There's no way to relocate by segment. */
3203 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3204 offs
, num_segments
, segments
);
3206 if (ret
== 0 && !do_sections
)
3207 error (_("Can not handle qOffsets TextSeg "
3208 "response with this symbol file"));
3215 free_symfile_segment_data (data
);
3219 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3221 /* This is a temporary kludge to force data and bss to use the
3222 same offsets because that's what nlmconv does now. The real
3223 solution requires changes to the stub and remote.c that I
3224 don't have time to do right now. */
3226 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3227 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3230 objfile_relocate (symfile_objfile
, offs
);
3233 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3234 threads we know are stopped already. This is used during the
3235 initial remote connection in non-stop mode --- threads that are
3236 reported as already being stopped are left stopped. */
3239 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3241 /* If we have a stop reply for this thread, it must be stopped. */
3242 if (peek_stop_reply (thread
->ptid
))
3243 set_stop_requested (thread
->ptid
, 1);
3248 /* Send interrupt_sequence to remote target. */
3250 send_interrupt_sequence (void)
3252 struct remote_state
*rs
= get_remote_state ();
3254 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3255 remote_serial_write ("\x03", 1);
3256 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3257 serial_send_break (rs
->remote_desc
);
3258 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3260 serial_send_break (rs
->remote_desc
);
3261 remote_serial_write ("g", 1);
3264 internal_error (__FILE__
, __LINE__
,
3265 _("Invalid value for interrupt_sequence_mode: %s."),
3266 interrupt_sequence_mode
);
3270 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3271 and extract the PTID. Returns NULL_PTID if not found. */
3274 stop_reply_extract_thread (char *stop_reply
)
3276 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3280 /* Txx r:val ; r:val (...) */
3283 /* Look for "register" named "thread". */
3288 p1
= strchr (p
, ':');
3292 if (strncmp (p
, "thread", p1
- p
) == 0)
3293 return read_ptid (++p1
, &p
);
3295 p1
= strchr (p
, ';');
3307 /* Query the remote target for which is the current thread/process,
3308 add it to our tables, and update INFERIOR_PTID. The caller is
3309 responsible for setting the state such that the remote end is ready
3310 to return the current thread.
3312 This function is called after handling the '?' or 'vRun' packets,
3313 whose response is a stop reply from which we can also try
3314 extracting the thread. If the target doesn't support the explicit
3315 qC query, we infer the current thread from that stop reply, passed
3316 in in WAIT_STATUS, which may be NULL. */
3319 add_current_inferior_and_thread (char *wait_status
)
3321 struct remote_state
*rs
= get_remote_state ();
3323 ptid_t ptid
= null_ptid
;
3325 inferior_ptid
= null_ptid
;
3327 /* Now, if we have thread information, update inferior_ptid. First
3328 if we have a stop reply handy, maybe it's a T stop reply with a
3329 "thread" register we can extract the current thread from. If
3330 not, ask the remote which is the current thread, with qC. The
3331 former method avoids a roundtrip. Note we don't use
3332 remote_parse_stop_reply as that makes use of the target
3333 architecture, which we haven't yet fully determined at this
3335 if (wait_status
!= NULL
)
3336 ptid
= stop_reply_extract_thread (wait_status
);
3337 if (ptid_equal (ptid
, null_ptid
))
3338 ptid
= remote_current_thread (inferior_ptid
);
3340 if (!ptid_equal (ptid
, null_ptid
))
3342 if (!remote_multi_process_p (rs
))
3345 inferior_ptid
= ptid
;
3349 /* Without this, some commands which require an active target
3350 (such as kill) won't work. This variable serves (at least)
3351 double duty as both the pid of the target process (if it has
3352 such), and as a flag indicating that a target is active. */
3353 inferior_ptid
= magic_null_ptid
;
3357 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3359 /* Add the main thread. */
3360 add_thread_silent (inferior_ptid
);
3364 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3366 struct remote_state
*rs
= get_remote_state ();
3367 struct packet_config
*noack_config
;
3368 char *wait_status
= NULL
;
3370 immediate_quit
++; /* Allow user to interrupt it. */
3373 if (interrupt_on_connect
)
3374 send_interrupt_sequence ();
3376 /* Ack any packet which the remote side has already sent. */
3377 serial_write (rs
->remote_desc
, "+", 1);
3379 /* Signal other parts that we're going through the initial setup,
3380 and so things may not be stable yet. */
3381 rs
->starting_up
= 1;
3383 /* The first packet we send to the target is the optional "supported
3384 packets" request. If the target can answer this, it will tell us
3385 which later probes to skip. */
3386 remote_query_supported ();
3388 /* If the stub wants to get a QAllow, compose one and send it. */
3389 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3390 remote_set_permissions ();
3392 /* Next, we possibly activate noack mode.
3394 If the QStartNoAckMode packet configuration is set to AUTO,
3395 enable noack mode if the stub reported a wish for it with
3398 If set to TRUE, then enable noack mode even if the stub didn't
3399 report it in qSupported. If the stub doesn't reply OK, the
3400 session ends with an error.
3402 If FALSE, then don't activate noack mode, regardless of what the
3403 stub claimed should be the default with qSupported. */
3405 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3407 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3408 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3409 && noack_config
->support
== PACKET_ENABLE
))
3411 putpkt ("QStartNoAckMode");
3412 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3413 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3419 /* Tell the remote that we are using the extended protocol. */
3421 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3424 /* Let the target know which signals it is allowed to pass down to
3426 update_signals_program_target ();
3428 /* Next, if the target can specify a description, read it. We do
3429 this before anything involving memory or registers. */
3430 target_find_description ();
3432 /* Next, now that we know something about the target, update the
3433 address spaces in the program spaces. */
3434 update_address_spaces ();
3436 /* On OSs where the list of libraries is global to all
3437 processes, we fetch them early. */
3438 if (gdbarch_has_global_solist (target_gdbarch ()))
3439 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3443 if (!rs
->non_stop_aware
)
3444 error (_("Non-stop mode requested, but remote "
3445 "does not support non-stop"));
3447 putpkt ("QNonStop:1");
3448 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3450 if (strcmp (rs
->buf
, "OK") != 0)
3451 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3453 /* Find about threads and processes the stub is already
3454 controlling. We default to adding them in the running state.
3455 The '?' query below will then tell us about which threads are
3457 remote_threads_info (target
);
3459 else if (rs
->non_stop_aware
)
3461 /* Don't assume that the stub can operate in all-stop mode.
3462 Request it explicitly. */
3463 putpkt ("QNonStop:0");
3464 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3466 if (strcmp (rs
->buf
, "OK") != 0)
3467 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3470 /* Upload TSVs regardless of whether the target is running or not. The
3471 remote stub, such as GDBserver, may have some predefined or builtin
3472 TSVs, even if the target is not running. */
3473 if (remote_get_trace_status (current_trace_status ()) != -1)
3475 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3477 remote_upload_trace_state_variables (&uploaded_tsvs
);
3478 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3481 /* Check whether the target is running now. */
3483 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3489 struct inferior
*inf
;
3491 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3494 error (_("The target is not running (try extended-remote?)"));
3496 /* We're connected, but not running. Drop out before we
3497 call start_remote. */
3498 rs
->starting_up
= 0;
3503 /* Save the reply for later. */
3504 wait_status
= alloca (strlen (rs
->buf
) + 1);
3505 strcpy (wait_status
, rs
->buf
);
3508 /* Let the stub know that we want it to return the thread. */
3509 set_continue_thread (minus_one_ptid
);
3511 add_current_inferior_and_thread (wait_status
);
3513 /* init_wait_for_inferior should be called before get_offsets in order
3514 to manage `inserted' flag in bp loc in a correct state.
3515 breakpoint_init_inferior, called from init_wait_for_inferior, set
3516 `inserted' flag to 0, while before breakpoint_re_set, called from
3517 start_remote, set `inserted' flag to 1. In the initialization of
3518 inferior, breakpoint_init_inferior should be called first, and then
3519 breakpoint_re_set can be called. If this order is broken, state of
3520 `inserted' flag is wrong, and cause some problems on breakpoint
3522 init_wait_for_inferior ();
3524 get_offsets (); /* Get text, data & bss offsets. */
3526 /* If we could not find a description using qXfer, and we know
3527 how to do it some other way, try again. This is not
3528 supported for non-stop; it could be, but it is tricky if
3529 there are no stopped threads when we connect. */
3530 if (remote_read_description_p (target
)
3531 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3533 target_clear_description ();
3534 target_find_description ();
3537 /* Use the previously fetched status. */
3538 gdb_assert (wait_status
!= NULL
);
3539 strcpy (rs
->buf
, wait_status
);
3540 rs
->cached_wait_status
= 1;
3543 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3547 /* Clear WFI global state. Do this before finding about new
3548 threads and inferiors, and setting the current inferior.
3549 Otherwise we would clear the proceed status of the current
3550 inferior when we want its stop_soon state to be preserved
3551 (see notice_new_inferior). */
3552 init_wait_for_inferior ();
3554 /* In non-stop, we will either get an "OK", meaning that there
3555 are no stopped threads at this time; or, a regular stop
3556 reply. In the latter case, there may be more than one thread
3557 stopped --- we pull them all out using the vStopped
3559 if (strcmp (rs
->buf
, "OK") != 0)
3561 struct notif_client
*notif
= ¬if_client_stop
;
3563 /* remote_notif_get_pending_replies acks this one, and gets
3565 notif_client_stop
.pending_event
3566 = remote_notif_parse (notif
, rs
->buf
);
3567 remote_notif_get_pending_events (notif
);
3569 /* Make sure that threads that were stopped remain
3571 iterate_over_threads (set_stop_requested_callback
, NULL
);
3574 if (target_can_async_p ())
3575 target_async (inferior_event_handler
, 0);
3577 if (thread_count () == 0)
3580 error (_("The target is not running (try extended-remote?)"));
3582 /* We're connected, but not running. Drop out before we
3583 call start_remote. */
3584 rs
->starting_up
= 0;
3588 /* Let the stub know that we want it to return the thread. */
3590 /* Force the stub to choose a thread. */
3591 set_general_thread (null_ptid
);
3594 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3595 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3596 error (_("remote didn't report the current thread in non-stop mode"));
3598 get_offsets (); /* Get text, data & bss offsets. */
3600 /* In non-stop mode, any cached wait status will be stored in
3601 the stop reply queue. */
3602 gdb_assert (wait_status
== NULL
);
3604 /* Report all signals during attach/startup. */
3605 remote_pass_signals (0, NULL
);
3608 /* If we connected to a live target, do some additional setup. */
3609 if (target_has_execution
)
3611 if (exec_bfd
) /* No use without an exec file. */
3612 remote_check_symbols ();
3615 /* Possibly the target has been engaged in a trace run started
3616 previously; find out where things are at. */
3617 if (remote_get_trace_status (current_trace_status ()) != -1)
3619 struct uploaded_tp
*uploaded_tps
= NULL
;
3621 if (current_trace_status ()->running
)
3622 printf_filtered (_("Trace is already running on the target.\n"));
3624 remote_upload_tracepoints (&uploaded_tps
);
3626 merge_uploaded_tracepoints (&uploaded_tps
);
3629 /* The thread and inferior lists are now synchronized with the
3630 target, our symbols have been relocated, and we're merged the
3631 target's tracepoints with ours. We're done with basic start
3633 rs
->starting_up
= 0;
3635 /* If breakpoints are global, insert them now. */
3636 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3637 && breakpoints_always_inserted_mode ())
3638 insert_breakpoints ();
3641 /* Open a connection to a remote debugger.
3642 NAME is the filename used for communication. */
3645 remote_open (char *name
, int from_tty
)
3647 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3650 /* Open a connection to a remote debugger using the extended
3651 remote gdb protocol. NAME is the filename used for communication. */
3654 extended_remote_open (char *name
, int from_tty
)
3656 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3659 /* Generic code for opening a connection to a remote target. */
3662 init_all_packet_configs (void)
3666 for (i
= 0; i
< PACKET_MAX
; i
++)
3667 update_packet_config (&remote_protocol_packets
[i
]);
3670 /* Symbol look-up. */
3673 remote_check_symbols (void)
3675 struct remote_state
*rs
= get_remote_state ();
3676 char *msg
, *reply
, *tmp
;
3677 struct minimal_symbol
*sym
;
3680 /* The remote side has no concept of inferiors that aren't running
3681 yet, it only knows about running processes. If we're connected
3682 but our current inferior is not running, we should not invite the
3683 remote target to request symbol lookups related to its
3684 (unrelated) current process. */
3685 if (!target_has_execution
)
3688 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3691 /* Make sure the remote is pointing at the right process. Note
3692 there's no way to select "no process". */
3693 set_general_process ();
3695 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3696 because we need both at the same time. */
3697 msg
= alloca (get_remote_packet_size ());
3699 /* Invite target to request symbol lookups. */
3701 putpkt ("qSymbol::");
3702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3703 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3706 while (strncmp (reply
, "qSymbol:", 8) == 0)
3709 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3711 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3713 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3716 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3717 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3719 /* If this is a function address, return the start of code
3720 instead of any data function descriptor. */
3721 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3725 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3726 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3730 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3735 static struct serial
*
3736 remote_serial_open (char *name
)
3738 static int udp_warning
= 0;
3740 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3741 of in ser-tcp.c, because it is the remote protocol assuming that the
3742 serial connection is reliable and not the serial connection promising
3744 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3746 warning (_("The remote protocol may be unreliable over UDP.\n"
3747 "Some events may be lost, rendering further debugging "
3752 return serial_open (name
);
3755 /* Inform the target of our permission settings. The permission flags
3756 work without this, but if the target knows the settings, it can do
3757 a couple things. First, it can add its own check, to catch cases
3758 that somehow manage to get by the permissions checks in target
3759 methods. Second, if the target is wired to disallow particular
3760 settings (for instance, a system in the field that is not set up to
3761 be able to stop at a breakpoint), it can object to any unavailable
3765 remote_set_permissions (void)
3767 struct remote_state
*rs
= get_remote_state ();
3769 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3770 "WriteReg:%x;WriteMem:%x;"
3771 "InsertBreak:%x;InsertTrace:%x;"
3772 "InsertFastTrace:%x;Stop:%x",
3773 may_write_registers
, may_write_memory
,
3774 may_insert_breakpoints
, may_insert_tracepoints
,
3775 may_insert_fast_tracepoints
, may_stop
);
3777 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3779 /* If the target didn't like the packet, warn the user. Do not try
3780 to undo the user's settings, that would just be maddening. */
3781 if (strcmp (rs
->buf
, "OK") != 0)
3782 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3785 /* This type describes each known response to the qSupported
3787 struct protocol_feature
3789 /* The name of this protocol feature. */
3792 /* The default for this protocol feature. */
3793 enum packet_support default_support
;
3795 /* The function to call when this feature is reported, or after
3796 qSupported processing if the feature is not supported.
3797 The first argument points to this structure. The second
3798 argument indicates whether the packet requested support be
3799 enabled, disabled, or probed (or the default, if this function
3800 is being called at the end of processing and this feature was
3801 not reported). The third argument may be NULL; if not NULL, it
3802 is a NUL-terminated string taken from the packet following
3803 this feature's name and an equals sign. */
3804 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3807 /* The corresponding packet for this feature. Only used if
3808 FUNC is remote_supported_packet. */
3813 remote_supported_packet (const struct protocol_feature
*feature
,
3814 enum packet_support support
,
3815 const char *argument
)
3819 warning (_("Remote qSupported response supplied an unexpected value for"
3820 " \"%s\"."), feature
->name
);
3824 if (remote_protocol_packets
[feature
->packet
].support
3825 == PACKET_SUPPORT_UNKNOWN
)
3826 remote_protocol_packets
[feature
->packet
].support
= support
;
3830 remote_packet_size (const struct protocol_feature
*feature
,
3831 enum packet_support support
, const char *value
)
3833 struct remote_state
*rs
= get_remote_state ();
3838 if (support
!= PACKET_ENABLE
)
3841 if (value
== NULL
|| *value
== '\0')
3843 warning (_("Remote target reported \"%s\" without a size."),
3849 packet_size
= strtol (value
, &value_end
, 16);
3850 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3852 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3853 feature
->name
, value
);
3857 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3859 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3860 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3861 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3864 /* Record the new maximum packet size. */
3865 rs
->explicit_packet_size
= packet_size
;
3869 remote_multi_process_feature (const struct protocol_feature
*feature
,
3870 enum packet_support support
, const char *value
)
3872 struct remote_state
*rs
= get_remote_state ();
3874 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3878 remote_non_stop_feature (const struct protocol_feature
*feature
,
3879 enum packet_support support
, const char *value
)
3881 struct remote_state
*rs
= get_remote_state ();
3883 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3887 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3888 enum packet_support support
,
3891 struct remote_state
*rs
= get_remote_state ();
3893 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3897 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3898 enum packet_support support
,
3901 struct remote_state
*rs
= get_remote_state ();
3903 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3907 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3908 enum packet_support support
,
3911 struct remote_state
*rs
= get_remote_state ();
3913 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3917 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3918 enum packet_support support
,
3921 struct remote_state
*rs
= get_remote_state ();
3923 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3927 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3928 enum packet_support support
,
3931 struct remote_state
*rs
= get_remote_state ();
3933 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3937 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3938 enum packet_support support
,
3941 struct remote_state
*rs
= get_remote_state ();
3943 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3947 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3948 enum packet_support support
,
3951 struct remote_state
*rs
= get_remote_state ();
3953 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3957 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3958 enum packet_support support
,
3961 struct remote_state
*rs
= get_remote_state ();
3963 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3967 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3968 enum packet_support support
,
3971 struct remote_state
*rs
= get_remote_state ();
3973 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3977 remote_augmented_libraries_svr4_read_feature
3978 (const struct protocol_feature
*feature
,
3979 enum packet_support support
, const char *value
)
3981 struct remote_state
*rs
= get_remote_state ();
3983 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3986 static const struct protocol_feature remote_protocol_features
[] = {
3987 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3988 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3989 PACKET_qXfer_auxv
},
3990 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3991 PACKET_qXfer_features
},
3992 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3993 PACKET_qXfer_libraries
},
3994 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3995 PACKET_qXfer_libraries_svr4
},
3996 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3997 remote_augmented_libraries_svr4_read_feature
, -1 },
3998 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3999 PACKET_qXfer_memory_map
},
4000 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4001 PACKET_qXfer_spu_read
},
4002 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_qXfer_spu_write
},
4004 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4005 PACKET_qXfer_osdata
},
4006 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4007 PACKET_qXfer_threads
},
4008 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4009 PACKET_qXfer_traceframe_info
},
4010 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4011 PACKET_QPassSignals
},
4012 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4013 PACKET_QProgramSignals
},
4014 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4015 PACKET_QStartNoAckMode
},
4016 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4017 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4018 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4019 PACKET_qXfer_siginfo_read
},
4020 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4021 PACKET_qXfer_siginfo_write
},
4022 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4023 PACKET_ConditionalTracepoints
},
4024 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4025 PACKET_ConditionalBreakpoints
},
4026 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4027 PACKET_BreakpointCommands
},
4028 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4029 PACKET_FastTracepoints
},
4030 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4031 PACKET_StaticTracepoints
},
4032 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4033 PACKET_InstallInTrace
},
4034 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4036 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4038 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4040 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4041 PACKET_TracepointSource
},
4042 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4044 { "EnableDisableTracepoints", PACKET_DISABLE
,
4045 remote_enable_disable_tracepoint_feature
, -1 },
4046 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4047 PACKET_qXfer_fdpic
},
4048 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4050 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4051 PACKET_QDisableRandomization
},
4052 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4053 { "QTBuffer:size", PACKET_DISABLE
,
4054 remote_supported_packet
, PACKET_QTBuffer_size
},
4055 { "tracenz", PACKET_DISABLE
,
4056 remote_string_tracing_feature
, -1 },
4057 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4058 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4059 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4060 PACKET_qXfer_btrace
}
4063 static char *remote_support_xml
;
4065 /* Register string appended to "xmlRegisters=" in qSupported query. */
4068 register_remote_support_xml (const char *xml
)
4070 #if defined(HAVE_LIBEXPAT)
4071 if (remote_support_xml
== NULL
)
4072 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4075 char *copy
= xstrdup (remote_support_xml
+ 13);
4076 char *p
= strtok (copy
, ",");
4080 if (strcmp (p
, xml
) == 0)
4087 while ((p
= strtok (NULL
, ",")) != NULL
);
4090 remote_support_xml
= reconcat (remote_support_xml
,
4091 remote_support_xml
, ",", xml
,
4098 remote_query_supported_append (char *msg
, const char *append
)
4101 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4103 return xstrdup (append
);
4107 remote_query_supported (void)
4109 struct remote_state
*rs
= get_remote_state ();
4112 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4114 /* The packet support flags are handled differently for this packet
4115 than for most others. We treat an error, a disabled packet, and
4116 an empty response identically: any features which must be reported
4117 to be used will be automatically disabled. An empty buffer
4118 accomplishes this, since that is also the representation for a list
4119 containing no features. */
4122 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4125 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4127 q
= remote_query_supported_append (q
, "multiprocess+");
4129 if (remote_support_xml
)
4130 q
= remote_query_supported_append (q
, remote_support_xml
);
4132 q
= remote_query_supported_append (q
, "qRelocInsn+");
4134 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4137 do_cleanups (old_chain
);
4139 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4141 /* If an error occured, warn, but do not return - just reset the
4142 buffer to empty and go on to disable features. */
4143 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4146 warning (_("Remote failure reply: %s"), rs
->buf
);
4151 memset (seen
, 0, sizeof (seen
));
4156 enum packet_support is_supported
;
4157 char *p
, *end
, *name_end
, *value
;
4159 /* First separate out this item from the rest of the packet. If
4160 there's another item after this, we overwrite the separator
4161 (terminated strings are much easier to work with). */
4163 end
= strchr (p
, ';');
4166 end
= p
+ strlen (p
);
4176 warning (_("empty item in \"qSupported\" response"));
4181 name_end
= strchr (p
, '=');
4184 /* This is a name=value entry. */
4185 is_supported
= PACKET_ENABLE
;
4186 value
= name_end
+ 1;
4195 is_supported
= PACKET_ENABLE
;
4199 is_supported
= PACKET_DISABLE
;
4203 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4207 warning (_("unrecognized item \"%s\" "
4208 "in \"qSupported\" response"), p
);
4214 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4215 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4217 const struct protocol_feature
*feature
;
4220 feature
= &remote_protocol_features
[i
];
4221 feature
->func (feature
, is_supported
, value
);
4226 /* If we increased the packet size, make sure to increase the global
4227 buffer size also. We delay this until after parsing the entire
4228 qSupported packet, because this is the same buffer we were
4230 if (rs
->buf_size
< rs
->explicit_packet_size
)
4232 rs
->buf_size
= rs
->explicit_packet_size
;
4233 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4236 /* Handle the defaults for unmentioned features. */
4237 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4240 const struct protocol_feature
*feature
;
4242 feature
= &remote_protocol_features
[i
];
4243 feature
->func (feature
, feature
->default_support
, NULL
);
4247 /* Remove any of the remote.c targets from target stack. Upper targets depend
4248 on it so remove them first. */
4251 remote_unpush_target (void)
4253 pop_all_targets_above (process_stratum
- 1);
4257 remote_open_1 (char *name
, int from_tty
,
4258 struct target_ops
*target
, int extended_p
)
4260 struct remote_state
*rs
= get_remote_state ();
4263 error (_("To open a remote debug connection, you need to specify what\n"
4264 "serial device is attached to the remote system\n"
4265 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4267 /* See FIXME above. */
4268 if (!target_async_permitted
)
4269 wait_forever_enabled_p
= 1;
4271 /* If we're connected to a running target, target_preopen will kill it.
4272 Ask this question first, before target_preopen has a chance to kill
4274 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4277 && !query (_("Already connected to a remote target. Disconnect? ")))
4278 error (_("Still connected."));
4281 /* Here the possibly existing remote target gets unpushed. */
4282 target_preopen (from_tty
);
4284 /* Make sure we send the passed signals list the next time we resume. */
4285 xfree (last_pass_packet
);
4286 last_pass_packet
= NULL
;
4288 /* Make sure we send the program signals list the next time we
4290 xfree (last_program_signals_packet
);
4291 last_program_signals_packet
= NULL
;
4293 remote_fileio_reset ();
4294 reopen_exec_file ();
4297 rs
->remote_desc
= remote_serial_open (name
);
4298 if (!rs
->remote_desc
)
4299 perror_with_name (name
);
4301 if (baud_rate
!= -1)
4303 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4305 /* The requested speed could not be set. Error out to
4306 top level after closing remote_desc. Take care to
4307 set remote_desc to NULL to avoid closing remote_desc
4309 serial_close (rs
->remote_desc
);
4310 rs
->remote_desc
= NULL
;
4311 perror_with_name (name
);
4315 serial_raw (rs
->remote_desc
);
4317 /* If there is something sitting in the buffer we might take it as a
4318 response to a command, which would be bad. */
4319 serial_flush_input (rs
->remote_desc
);
4323 puts_filtered ("Remote debugging using ");
4324 puts_filtered (name
);
4325 puts_filtered ("\n");
4327 push_target (target
); /* Switch to using remote target now. */
4329 /* Register extra event sources in the event loop. */
4330 remote_async_inferior_event_token
4331 = create_async_event_handler (remote_async_inferior_event_handler
,
4333 remote_notif_register_async_event_handler ();
4335 /* Reset the target state; these things will be queried either by
4336 remote_query_supported or as they are needed. */
4337 init_all_packet_configs ();
4338 rs
->cached_wait_status
= 0;
4339 rs
->explicit_packet_size
= 0;
4341 rs
->multi_process_aware
= 0;
4342 rs
->extended
= extended_p
;
4343 rs
->non_stop_aware
= 0;
4344 rs
->waiting_for_stop_reply
= 0;
4345 rs
->ctrlc_pending_p
= 0;
4347 general_thread
= not_sent_ptid
;
4348 continue_thread
= not_sent_ptid
;
4349 remote_traceframe_number
= -1;
4351 /* Probe for ability to use "ThreadInfo" query, as required. */
4352 use_threadinfo_query
= 1;
4353 use_threadextra_query
= 1;
4355 if (target_async_permitted
)
4357 /* With this target we start out by owning the terminal. */
4358 remote_async_terminal_ours_p
= 1;
4360 /* FIXME: cagney/1999-09-23: During the initial connection it is
4361 assumed that the target is already ready and able to respond to
4362 requests. Unfortunately remote_start_remote() eventually calls
4363 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4364 around this. Eventually a mechanism that allows
4365 wait_for_inferior() to expect/get timeouts will be
4367 wait_forever_enabled_p
= 0;
4370 /* First delete any symbols previously loaded from shared libraries. */
4371 no_shared_libraries (NULL
, 0);
4374 init_thread_list ();
4376 /* Start the remote connection. If error() or QUIT, discard this
4377 target (we'd otherwise be in an inconsistent state) and then
4378 propogate the error on up the exception chain. This ensures that
4379 the caller doesn't stumble along blindly assuming that the
4380 function succeeded. The CLI doesn't have this problem but other
4381 UI's, such as MI do.
4383 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4384 this function should return an error indication letting the
4385 caller restore the previous state. Unfortunately the command
4386 ``target remote'' is directly wired to this function making that
4387 impossible. On a positive note, the CLI side of this problem has
4388 been fixed - the function set_cmd_context() makes it possible for
4389 all the ``target ....'' commands to share a common callback
4390 function. See cli-dump.c. */
4392 volatile struct gdb_exception ex
;
4394 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4396 remote_start_remote (from_tty
, target
, extended_p
);
4400 /* Pop the partially set up target - unless something else did
4401 already before throwing the exception. */
4402 if (rs
->remote_desc
!= NULL
)
4403 remote_unpush_target ();
4404 if (target_async_permitted
)
4405 wait_forever_enabled_p
= 1;
4406 throw_exception (ex
);
4410 if (target_async_permitted
)
4411 wait_forever_enabled_p
= 1;
4414 /* This takes a program previously attached to and detaches it. After
4415 this is done, GDB can be used to debug some other program. We
4416 better not have left any breakpoints in the target program or it'll
4417 die when it hits one. */
4420 remote_detach_1 (char *args
, int from_tty
, int extended
)
4422 int pid
= ptid_get_pid (inferior_ptid
);
4423 struct remote_state
*rs
= get_remote_state ();
4426 error (_("Argument given to \"detach\" when remotely debugging."));
4428 if (!target_has_execution
)
4429 error (_("No process to detach from."));
4433 char *exec_file
= get_exec_file (0);
4434 if (exec_file
== NULL
)
4436 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4437 target_pid_to_str (pid_to_ptid (pid
)));
4438 gdb_flush (gdb_stdout
);
4441 /* Tell the remote target to detach. */
4442 if (remote_multi_process_p (rs
))
4443 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4445 strcpy (rs
->buf
, "D");
4448 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4450 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4452 else if (rs
->buf
[0] == '\0')
4453 error (_("Remote doesn't know how to detach"));
4455 error (_("Can't detach process."));
4457 if (from_tty
&& !extended
)
4458 puts_filtered (_("Ending remote debugging.\n"));
4460 target_mourn_inferior ();
4464 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4466 remote_detach_1 (args
, from_tty
, 0);
4470 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4472 remote_detach_1 (args
, from_tty
, 1);
4475 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4478 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4481 error (_("Argument given to \"disconnect\" when remotely debugging."));
4483 /* Make sure we unpush even the extended remote targets; mourn
4484 won't do it. So call remote_mourn_1 directly instead of
4485 target_mourn_inferior. */
4486 remote_mourn_1 (target
);
4489 puts_filtered ("Ending remote debugging.\n");
4492 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4493 be chatty about it. */
4496 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4498 struct remote_state
*rs
= get_remote_state ();
4500 char *wait_status
= NULL
;
4502 pid
= parse_pid_to_attach (args
);
4504 /* Remote PID can be freely equal to getpid, do not check it here the same
4505 way as in other targets. */
4507 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4508 error (_("This target does not support attaching to a process"));
4512 char *exec_file
= get_exec_file (0);
4515 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4516 target_pid_to_str (pid_to_ptid (pid
)));
4518 printf_unfiltered (_("Attaching to %s\n"),
4519 target_pid_to_str (pid_to_ptid (pid
)));
4521 gdb_flush (gdb_stdout
);
4524 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4526 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4528 if (packet_ok (rs
->buf
,
4529 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4533 /* Save the reply for later. */
4534 wait_status
= alloca (strlen (rs
->buf
) + 1);
4535 strcpy (wait_status
, rs
->buf
);
4537 else if (strcmp (rs
->buf
, "OK") != 0)
4538 error (_("Attaching to %s failed with: %s"),
4539 target_pid_to_str (pid_to_ptid (pid
)),
4542 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4543 error (_("This target does not support attaching to a process"));
4545 error (_("Attaching to %s failed"),
4546 target_pid_to_str (pid_to_ptid (pid
)));
4548 set_current_inferior (remote_add_inferior (0, pid
, 1));
4550 inferior_ptid
= pid_to_ptid (pid
);
4554 struct thread_info
*thread
;
4556 /* Get list of threads. */
4557 remote_threads_info (target
);
4559 thread
= first_thread_of_process (pid
);
4561 inferior_ptid
= thread
->ptid
;
4563 inferior_ptid
= pid_to_ptid (pid
);
4565 /* Invalidate our notion of the remote current thread. */
4566 record_currthread (minus_one_ptid
);
4570 /* Now, if we have thread information, update inferior_ptid. */
4571 inferior_ptid
= remote_current_thread (inferior_ptid
);
4573 /* Add the main thread to the thread list. */
4574 add_thread_silent (inferior_ptid
);
4577 /* Next, if the target can specify a description, read it. We do
4578 this before anything involving memory or registers. */
4579 target_find_description ();
4583 /* Use the previously fetched status. */
4584 gdb_assert (wait_status
!= NULL
);
4586 if (target_can_async_p ())
4588 struct notif_event
*reply
4589 = remote_notif_parse (¬if_client_stop
, wait_status
);
4591 push_stop_reply ((struct stop_reply
*) reply
);
4593 target_async (inferior_event_handler
, 0);
4597 gdb_assert (wait_status
!= NULL
);
4598 strcpy (rs
->buf
, wait_status
);
4599 rs
->cached_wait_status
= 1;
4603 gdb_assert (wait_status
== NULL
);
4607 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4609 extended_remote_attach_1 (ops
, args
, from_tty
);
4612 /* Convert hex digit A to a number. */
4617 if (a
>= '0' && a
<= '9')
4619 else if (a
>= 'a' && a
<= 'f')
4620 return a
- 'a' + 10;
4621 else if (a
>= 'A' && a
<= 'F')
4622 return a
- 'A' + 10;
4624 error (_("Reply contains invalid hex digit %d"), a
);
4628 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4632 for (i
= 0; i
< count
; i
++)
4634 if (hex
[0] == 0 || hex
[1] == 0)
4636 /* Hex string is short, or of uneven length.
4637 Return the count that has been converted so far. */
4640 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4646 /* Convert number NIB to a hex digit. */
4654 return 'a' + nib
- 10;
4658 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4662 /* May use a length, or a nul-terminated string as input. */
4664 count
= strlen ((char *) bin
);
4666 for (i
= 0; i
< count
; i
++)
4668 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4669 *hex
++ = tohex (*bin
++ & 0xf);
4675 /* Check for the availability of vCont. This function should also check
4679 remote_vcont_probe (struct remote_state
*rs
)
4683 strcpy (rs
->buf
, "vCont?");
4685 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4688 /* Make sure that the features we assume are supported. */
4689 if (strncmp (buf
, "vCont", 5) == 0)
4692 int support_s
, support_S
, support_c
, support_C
;
4698 rs
->supports_vCont
.t
= 0;
4699 rs
->supports_vCont
.r
= 0;
4700 while (p
&& *p
== ';')
4703 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4705 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4707 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4709 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4711 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4712 rs
->supports_vCont
.t
= 1;
4713 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4714 rs
->supports_vCont
.r
= 1;
4716 p
= strchr (p
, ';');
4719 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4720 BUF will make packet_ok disable the packet. */
4721 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4725 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4728 /* Helper function for building "vCont" resumptions. Write a
4729 resumption to P. ENDP points to one-passed-the-end of the buffer
4730 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4731 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4732 resumed thread should be single-stepped and/or signalled. If PTID
4733 equals minus_one_ptid, then all threads are resumed; if PTID
4734 represents a process, then all threads of the process are resumed;
4735 the thread to be stepped and/or signalled is given in the global
4739 append_resumption (char *p
, char *endp
,
4740 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4742 struct remote_state
*rs
= get_remote_state ();
4744 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4745 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4747 /* GDB is willing to range step. */
4748 && use_range_stepping
4749 /* Target supports range stepping. */
4750 && rs
->supports_vCont
.r
4751 /* We don't currently support range stepping multiple
4752 threads with a wildcard (though the protocol allows it,
4753 so stubs shouldn't make an active effort to forbid
4755 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4757 struct thread_info
*tp
;
4759 if (ptid_equal (ptid
, minus_one_ptid
))
4761 /* If we don't know about the target thread's tid, then
4762 we're resuming magic_null_ptid (see caller). */
4763 tp
= find_thread_ptid (magic_null_ptid
);
4766 tp
= find_thread_ptid (ptid
);
4767 gdb_assert (tp
!= NULL
);
4769 if (tp
->control
.may_range_step
)
4771 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4773 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4774 phex_nz (tp
->control
.step_range_start
,
4776 phex_nz (tp
->control
.step_range_end
,
4780 p
+= xsnprintf (p
, endp
- p
, ";s");
4783 p
+= xsnprintf (p
, endp
- p
, ";s");
4784 else if (siggnal
!= GDB_SIGNAL_0
)
4785 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4787 p
+= xsnprintf (p
, endp
- p
, ";c");
4789 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4793 /* All (-1) threads of process. */
4794 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4796 p
+= xsnprintf (p
, endp
- p
, ":");
4797 p
= write_ptid (p
, endp
, nptid
);
4799 else if (!ptid_equal (ptid
, minus_one_ptid
))
4801 p
+= xsnprintf (p
, endp
- p
, ":");
4802 p
= write_ptid (p
, endp
, ptid
);
4808 /* Append a vCont continue-with-signal action for threads that have a
4809 non-zero stop signal. */
4812 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4814 struct thread_info
*thread
;
4816 ALL_THREADS (thread
)
4817 if (ptid_match (thread
->ptid
, ptid
)
4818 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4819 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4820 && signal_pass_state (thread
->suspend
.stop_signal
))
4822 p
= append_resumption (p
, endp
, thread
->ptid
,
4823 0, thread
->suspend
.stop_signal
);
4824 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4830 /* Resume the remote inferior by using a "vCont" packet. The thread
4831 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4832 resumed thread should be single-stepped and/or signalled. If PTID
4833 equals minus_one_ptid, then all threads are resumed; the thread to
4834 be stepped and/or signalled is given in the global INFERIOR_PTID.
4835 This function returns non-zero iff it resumes the inferior.
4837 This function issues a strict subset of all possible vCont commands at the
4841 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4843 struct remote_state
*rs
= get_remote_state ();
4847 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4848 remote_vcont_probe (rs
);
4850 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4854 endp
= rs
->buf
+ get_remote_packet_size ();
4856 /* If we could generate a wider range of packets, we'd have to worry
4857 about overflowing BUF. Should there be a generic
4858 "multi-part-packet" packet? */
4860 p
+= xsnprintf (p
, endp
- p
, "vCont");
4862 if (ptid_equal (ptid
, magic_null_ptid
))
4864 /* MAGIC_NULL_PTID means that we don't have any active threads,
4865 so we don't have any TID numbers the inferior will
4866 understand. Make sure to only send forms that do not specify
4868 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4870 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4872 /* Resume all threads (of all processes, or of a single
4873 process), with preference for INFERIOR_PTID. This assumes
4874 inferior_ptid belongs to the set of all threads we are about
4876 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4878 /* Step inferior_ptid, with or without signal. */
4879 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4882 /* Also pass down any pending signaled resumption for other
4883 threads not the current. */
4884 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4886 /* And continue others without a signal. */
4887 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4891 /* Scheduler locking; resume only PTID. */
4892 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4895 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4900 /* In non-stop, the stub replies to vCont with "OK". The stop
4901 reply will be reported asynchronously by means of a `%Stop'
4903 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4904 if (strcmp (rs
->buf
, "OK") != 0)
4905 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4911 /* Tell the remote machine to resume. */
4913 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4915 static int last_sent_step
;
4918 remote_resume (struct target_ops
*ops
,
4919 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4921 struct remote_state
*rs
= get_remote_state ();
4924 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4925 (explained in remote-notif.c:handle_notification) so
4926 remote_notif_process is not called. We need find a place where
4927 it is safe to start a 'vNotif' sequence. It is good to do it
4928 before resuming inferior, because inferior was stopped and no RSP
4929 traffic at that moment. */
4931 remote_notif_process (¬if_client_stop
);
4933 last_sent_signal
= siggnal
;
4934 last_sent_step
= step
;
4936 /* The vCont packet doesn't need to specify threads via Hc. */
4937 /* No reverse support (yet) for vCont. */
4938 if (execution_direction
!= EXEC_REVERSE
)
4939 if (remote_vcont_resume (ptid
, step
, siggnal
))
4942 /* All other supported resume packets do use Hc, so set the continue
4944 if (ptid_equal (ptid
, minus_one_ptid
))
4945 set_continue_thread (any_thread_ptid
);
4947 set_continue_thread (ptid
);
4950 if (execution_direction
== EXEC_REVERSE
)
4952 /* We don't pass signals to the target in reverse exec mode. */
4953 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4954 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4958 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4959 error (_("Remote reverse-step not supported."));
4961 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4962 error (_("Remote reverse-continue not supported."));
4964 strcpy (buf
, step
? "bs" : "bc");
4966 else if (siggnal
!= GDB_SIGNAL_0
)
4968 buf
[0] = step
? 'S' : 'C';
4969 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4970 buf
[2] = tohex (((int) siggnal
) & 0xf);
4974 strcpy (buf
, step
? "s" : "c");
4979 /* We are about to start executing the inferior, let's register it
4980 with the event loop. NOTE: this is the one place where all the
4981 execution commands end up. We could alternatively do this in each
4982 of the execution commands in infcmd.c. */
4983 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4984 into infcmd.c in order to allow inferior function calls to work
4985 NOT asynchronously. */
4986 if (target_can_async_p ())
4987 target_async (inferior_event_handler
, 0);
4989 /* We've just told the target to resume. The remote server will
4990 wait for the inferior to stop, and then send a stop reply. In
4991 the mean time, we can't start another command/query ourselves
4992 because the stub wouldn't be ready to process it. This applies
4993 only to the base all-stop protocol, however. In non-stop (which
4994 only supports vCont), the stub replies with an "OK", and is
4995 immediate able to process further serial input. */
4997 rs
->waiting_for_stop_reply
= 1;
5001 /* Set up the signal handler for SIGINT, while the target is
5002 executing, ovewriting the 'regular' SIGINT signal handler. */
5004 async_initialize_sigint_signal_handler (void)
5006 signal (SIGINT
, async_handle_remote_sigint
);
5009 /* Signal handler for SIGINT, while the target is executing. */
5011 async_handle_remote_sigint (int sig
)
5013 signal (sig
, async_handle_remote_sigint_twice
);
5014 mark_async_signal_handler (async_sigint_remote_token
);
5017 /* Signal handler for SIGINT, installed after SIGINT has already been
5018 sent once. It will take effect the second time that the user sends
5021 async_handle_remote_sigint_twice (int sig
)
5023 signal (sig
, async_handle_remote_sigint
);
5024 mark_async_signal_handler (async_sigint_remote_twice_token
);
5027 /* Perform the real interruption of the target execution, in response
5030 async_remote_interrupt (gdb_client_data arg
)
5033 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5035 target_stop (inferior_ptid
);
5038 /* Perform interrupt, if the first attempt did not succeed. Just give
5039 up on the target alltogether. */
5041 async_remote_interrupt_twice (gdb_client_data arg
)
5044 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5049 /* Reinstall the usual SIGINT handlers, after the target has
5052 async_cleanup_sigint_signal_handler (void *dummy
)
5054 signal (SIGINT
, handle_sigint
);
5057 /* Send ^C to target to halt it. Target will respond, and send us a
5059 static void (*ofunc
) (int);
5061 /* The command line interface's stop routine. This function is installed
5062 as a signal handler for SIGINT. The first time a user requests a
5063 stop, we call remote_stop to send a break or ^C. If there is no
5064 response from the target (it didn't stop when the user requested it),
5065 we ask the user if he'd like to detach from the target. */
5067 sync_remote_interrupt (int signo
)
5069 /* If this doesn't work, try more severe steps. */
5070 signal (signo
, sync_remote_interrupt_twice
);
5072 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5075 /* The user typed ^C twice. */
5078 sync_remote_interrupt_twice (int signo
)
5080 signal (signo
, ofunc
);
5081 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5082 signal (signo
, sync_remote_interrupt
);
5085 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5086 thread, all threads of a remote process, or all threads of all
5090 remote_stop_ns (ptid_t ptid
)
5092 struct remote_state
*rs
= get_remote_state ();
5094 char *endp
= rs
->buf
+ get_remote_packet_size ();
5096 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5097 remote_vcont_probe (rs
);
5099 if (!rs
->supports_vCont
.t
)
5100 error (_("Remote server does not support stopping threads"));
5102 if (ptid_equal (ptid
, minus_one_ptid
)
5103 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5104 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5109 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5111 if (ptid_is_pid (ptid
))
5112 /* All (-1) threads of process. */
5113 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5116 /* Small optimization: if we already have a stop reply for
5117 this thread, no use in telling the stub we want this
5119 if (peek_stop_reply (ptid
))
5125 write_ptid (p
, endp
, nptid
);
5128 /* In non-stop, we get an immediate OK reply. The stop reply will
5129 come in asynchronously by notification. */
5131 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5132 if (strcmp (rs
->buf
, "OK") != 0)
5133 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5136 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5137 remote target. It is undefined which thread of which process
5138 reports the stop. */
5141 remote_stop_as (ptid_t ptid
)
5143 struct remote_state
*rs
= get_remote_state ();
5145 rs
->ctrlc_pending_p
= 1;
5147 /* If the inferior is stopped already, but the core didn't know
5148 about it yet, just ignore the request. The cached wait status
5149 will be collected in remote_wait. */
5150 if (rs
->cached_wait_status
)
5153 /* Send interrupt_sequence to remote target. */
5154 send_interrupt_sequence ();
5157 /* This is the generic stop called via the target vector. When a target
5158 interrupt is requested, either by the command line or the GUI, we
5159 will eventually end up here. */
5162 remote_stop (ptid_t ptid
)
5165 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5168 remote_stop_ns (ptid
);
5170 remote_stop_as (ptid
);
5173 /* Ask the user what to do when an interrupt is received. */
5176 interrupt_query (void)
5178 target_terminal_ours ();
5180 if (target_can_async_p ())
5182 signal (SIGINT
, handle_sigint
);
5187 if (query (_("Interrupted while waiting for the program.\n\
5188 Give up (and stop debugging it)? ")))
5190 remote_unpush_target ();
5195 target_terminal_inferior ();
5198 /* Enable/disable target terminal ownership. Most targets can use
5199 terminal groups to control terminal ownership. Remote targets are
5200 different in that explicit transfer of ownership to/from GDB/target
5204 remote_terminal_inferior (void)
5206 if (!target_async_permitted
)
5207 /* Nothing to do. */
5210 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5211 idempotent. The event-loop GDB talking to an asynchronous target
5212 with a synchronous command calls this function from both
5213 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5214 transfer the terminal to the target when it shouldn't this guard
5216 if (!remote_async_terminal_ours_p
)
5218 delete_file_handler (input_fd
);
5219 remote_async_terminal_ours_p
= 0;
5220 async_initialize_sigint_signal_handler ();
5221 /* NOTE: At this point we could also register our selves as the
5222 recipient of all input. Any characters typed could then be
5223 passed on down to the target. */
5227 remote_terminal_ours (void)
5229 if (!target_async_permitted
)
5230 /* Nothing to do. */
5233 /* See FIXME in remote_terminal_inferior. */
5234 if (remote_async_terminal_ours_p
)
5236 async_cleanup_sigint_signal_handler (NULL
);
5237 add_file_handler (input_fd
, stdin_event_handler
, 0);
5238 remote_async_terminal_ours_p
= 1;
5242 remote_console_output (char *msg
)
5246 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5249 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5253 fputs_unfiltered (tb
, gdb_stdtarg
);
5255 gdb_flush (gdb_stdtarg
);
5258 typedef struct cached_reg
5261 gdb_byte data
[MAX_REGISTER_SIZE
];
5264 DEF_VEC_O(cached_reg_t
);
5266 typedef struct stop_reply
5268 struct notif_event base
;
5270 /* The identifier of the thread about this event */
5273 struct target_waitstatus ws
;
5275 /* Expedited registers. This makes remote debugging a bit more
5276 efficient for those targets that provide critical registers as
5277 part of their normal status mechanism (as another roundtrip to
5278 fetch them is avoided). */
5279 VEC(cached_reg_t
) *regcache
;
5281 int stopped_by_watchpoint_p
;
5282 CORE_ADDR watch_data_address
;
5290 DECLARE_QUEUE_P (stop_reply_p
);
5291 DEFINE_QUEUE_P (stop_reply_p
);
5292 /* The list of already fetched and acknowledged stop events. This
5293 queue is used for notification Stop, and other notifications
5294 don't need queue for their events, because the notification events
5295 of Stop can't be consumed immediately, so that events should be
5296 queued first, and be consumed by remote_wait_{ns,as} one per
5297 time. Other notifications can consume their events immediately,
5298 so queue is not needed for them. */
5299 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5302 stop_reply_xfree (struct stop_reply
*r
)
5306 VEC_free (cached_reg_t
, r
->regcache
);
5312 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5313 struct notif_event
*event
)
5315 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5319 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5320 struct notif_event
*event
)
5322 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5325 putpkt ((char *) self
->ack_command
);
5327 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5328 /* We got an unknown stop reply. */
5329 error (_("Unknown stop reply"));
5331 push_stop_reply (stop_reply
);
5335 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5337 /* We can't get pending events in remote_notif_process for
5338 notification stop, and we have to do this in remote_wait_ns
5339 instead. If we fetch all queued events from stub, remote stub
5340 may exit and we have no chance to process them back in
5342 mark_async_event_handler (remote_async_inferior_event_token
);
5347 stop_reply_dtr (struct notif_event
*event
)
5349 struct stop_reply
*r
= (struct stop_reply
*) event
;
5351 VEC_free (cached_reg_t
, r
->regcache
);
5354 static struct notif_event
*
5355 remote_notif_stop_alloc_reply (void)
5357 struct notif_event
*r
5358 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5360 r
->dtr
= stop_reply_dtr
;
5365 /* A client of notification Stop. */
5367 struct notif_client notif_client_stop
=
5371 remote_notif_stop_parse
,
5372 remote_notif_stop_ack
,
5373 remote_notif_stop_can_get_pending_events
,
5374 remote_notif_stop_alloc_reply
,
5378 /* A parameter to pass data in and out. */
5380 struct queue_iter_param
5383 struct stop_reply
*output
;
5386 /* Remove all queue elements meet the condition it checks. */
5389 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5390 QUEUE_ITER (stop_reply_p
) *iter
,
5394 struct queue_iter_param
*param
= data
;
5395 struct inferior
*inf
= param
->input
;
5397 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5399 stop_reply_xfree (event
);
5400 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5406 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5407 discard everything. */
5410 discard_pending_stop_replies (struct inferior
*inf
)
5413 struct queue_iter_param param
;
5414 struct stop_reply
*reply
5415 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5417 /* Discard the in-flight notification. */
5420 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5422 stop_reply_xfree (reply
);
5423 notif_client_stop
.pending_event
= NULL
;
5427 param
.output
= NULL
;
5428 /* Discard the stop replies we have already pulled with
5430 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5431 remote_notif_remove_all
, ¶m
);
5434 /* A parameter to pass data in and out. */
5437 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5438 QUEUE_ITER (stop_reply_p
) *iter
,
5442 struct queue_iter_param
*param
= data
;
5443 ptid_t
*ptid
= param
->input
;
5445 if (ptid_match (event
->ptid
, *ptid
))
5447 param
->output
= event
;
5448 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5455 /* Remove the first reply in 'stop_reply_queue' which matches
5458 static struct stop_reply
*
5459 remote_notif_remove_queued_reply (ptid_t ptid
)
5461 struct queue_iter_param param
;
5463 param
.input
= &ptid
;
5464 param
.output
= NULL
;
5466 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5467 remote_notif_remove_once_on_match
, ¶m
);
5469 fprintf_unfiltered (gdb_stdlog
,
5470 "notif: discard queued event: 'Stop' in %s\n",
5471 target_pid_to_str (ptid
));
5473 return param
.output
;
5476 /* Look for a queued stop reply belonging to PTID. If one is found,
5477 remove it from the queue, and return it. Returns NULL if none is
5478 found. If there are still queued events left to process, tell the
5479 event loop to get back to target_wait soon. */
5481 static struct stop_reply
*
5482 queued_stop_reply (ptid_t ptid
)
5484 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5486 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5487 /* There's still at least an event left. */
5488 mark_async_event_handler (remote_async_inferior_event_token
);
5493 /* Push a fully parsed stop reply in the stop reply queue. Since we
5494 know that we now have at least one queued event left to pass to the
5495 core side, tell the event loop to get back to target_wait soon. */
5498 push_stop_reply (struct stop_reply
*new_event
)
5500 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5503 fprintf_unfiltered (gdb_stdlog
,
5504 "notif: push 'Stop' %s to queue %d\n",
5505 target_pid_to_str (new_event
->ptid
),
5506 QUEUE_length (stop_reply_p
,
5509 mark_async_event_handler (remote_async_inferior_event_token
);
5513 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5514 QUEUE_ITER (stop_reply_p
) *iter
,
5515 struct stop_reply
*event
,
5518 ptid_t
*ptid
= data
;
5520 return !(ptid_equal (*ptid
, event
->ptid
)
5521 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5524 /* Returns true if we have a stop reply for PTID. */
5527 peek_stop_reply (ptid_t ptid
)
5529 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5530 stop_reply_match_ptid_and_ws
, &ptid
);
5533 /* Parse the stop reply in BUF. Either the function succeeds, and the
5534 result is stored in EVENT, or throws an error. */
5537 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5539 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5543 event
->ptid
= null_ptid
;
5544 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5545 event
->ws
.value
.integer
= 0;
5546 event
->solibs_changed
= 0;
5547 event
->replay_event
= 0;
5548 event
->stopped_by_watchpoint_p
= 0;
5549 event
->regcache
= NULL
;
5554 case 'T': /* Status with PC, SP, FP, ... */
5555 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5556 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5558 n... = register number
5559 r... = register contents
5562 p
= &buf
[3]; /* after Txx */
5570 /* If the packet contains a register number, save it in
5571 pnum and set p1 to point to the character following it.
5572 Otherwise p1 points to p. */
5574 /* If this packet is an awatch packet, don't parse the 'a'
5575 as a register number. */
5577 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5578 && strncmp (p
, "core", strlen ("core") != 0))
5580 /* Read the ``P'' register number. */
5581 pnum
= strtol (p
, &p_temp
, 16);
5587 if (p1
== p
) /* No register number present here. */
5589 p1
= strchr (p
, ':');
5591 error (_("Malformed packet(a) (missing colon): %s\n\
5594 if (strncmp (p
, "thread", p1
- p
) == 0)
5595 event
->ptid
= read_ptid (++p1
, &p
);
5596 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5597 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5598 || (strncmp (p
, "awatch", p1
- p
) == 0))
5600 event
->stopped_by_watchpoint_p
= 1;
5601 p
= unpack_varlen_hex (++p1
, &addr
);
5602 event
->watch_data_address
= (CORE_ADDR
) addr
;
5604 else if (strncmp (p
, "library", p1
- p
) == 0)
5608 while (*p_temp
&& *p_temp
!= ';')
5611 event
->solibs_changed
= 1;
5614 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5616 /* NO_HISTORY event.
5617 p1 will indicate "begin" or "end", but
5618 it makes no difference for now, so ignore it. */
5619 event
->replay_event
= 1;
5620 p_temp
= strchr (p1
+ 1, ';');
5624 else if (strncmp (p
, "core", p1
- p
) == 0)
5628 p
= unpack_varlen_hex (++p1
, &c
);
5633 /* Silently skip unknown optional info. */
5634 p_temp
= strchr (p1
+ 1, ';');
5641 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5642 cached_reg_t cached_reg
;
5647 error (_("Malformed packet(b) (missing colon): %s\n\
5653 error (_("Remote sent bad register number %s: %s\n\
5655 hex_string (pnum
), p
, buf
);
5657 cached_reg
.num
= reg
->regnum
;
5659 fieldsize
= hex2bin (p
, cached_reg
.data
,
5660 register_size (target_gdbarch (),
5663 if (fieldsize
< register_size (target_gdbarch (),
5665 warning (_("Remote reply is too short: %s"), buf
);
5667 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5671 error (_("Remote register badly formatted: %s\nhere: %s"),
5676 case 'S': /* Old style status, just signal only. */
5677 if (event
->solibs_changed
)
5678 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5679 else if (event
->replay_event
)
5680 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5683 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5684 event
->ws
.value
.sig
= (enum gdb_signal
)
5685 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5688 case 'W': /* Target exited. */
5695 /* GDB used to accept only 2 hex chars here. Stubs should
5696 only send more if they detect GDB supports multi-process
5698 p
= unpack_varlen_hex (&buf
[1], &value
);
5702 /* The remote process exited. */
5703 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5704 event
->ws
.value
.integer
= value
;
5708 /* The remote process exited with a signal. */
5709 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5710 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5713 /* If no process is specified, assume inferior_ptid. */
5714 pid
= ptid_get_pid (inferior_ptid
);
5723 else if (strncmp (p
,
5724 "process:", sizeof ("process:") - 1) == 0)
5728 p
+= sizeof ("process:") - 1;
5729 unpack_varlen_hex (p
, &upid
);
5733 error (_("unknown stop reply packet: %s"), buf
);
5736 error (_("unknown stop reply packet: %s"), buf
);
5737 event
->ptid
= pid_to_ptid (pid
);
5742 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5743 error (_("No process or thread specified in stop reply: %s"), buf
);
5746 /* When the stub wants to tell GDB about a new notification reply, it
5747 sends a notification (%Stop, for example). Those can come it at
5748 any time, hence, we have to make sure that any pending
5749 putpkt/getpkt sequence we're making is finished, before querying
5750 the stub for more events with the corresponding ack command
5751 (vStopped, for example). E.g., if we started a vStopped sequence
5752 immediately upon receiving the notification, something like this
5760 1.6) <-- (registers reply to step #1.3)
5762 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5765 To solve this, whenever we parse a %Stop notification successfully,
5766 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5767 doing whatever we were doing:
5773 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5774 2.5) <-- (registers reply to step #2.3)
5776 Eventualy after step #2.5, we return to the event loop, which
5777 notices there's an event on the
5778 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5779 associated callback --- the function below. At this point, we're
5780 always safe to start a vStopped sequence. :
5783 2.7) <-- T05 thread:2
5789 remote_notif_get_pending_events (struct notif_client
*nc
)
5791 struct remote_state
*rs
= get_remote_state ();
5793 if (nc
->pending_event
)
5796 fprintf_unfiltered (gdb_stdlog
,
5797 "notif: process: '%s' ack pending event\n",
5801 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5802 nc
->pending_event
= NULL
;
5806 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5807 if (strcmp (rs
->buf
, "OK") == 0)
5810 remote_notif_ack (nc
, rs
->buf
);
5816 fprintf_unfiltered (gdb_stdlog
,
5817 "notif: process: '%s' no pending reply\n",
5822 /* Called when it is decided that STOP_REPLY holds the info of the
5823 event that is to be returned to the core. This function always
5824 destroys STOP_REPLY. */
5827 process_stop_reply (struct stop_reply
*stop_reply
,
5828 struct target_waitstatus
*status
)
5832 *status
= stop_reply
->ws
;
5833 ptid
= stop_reply
->ptid
;
5835 /* If no thread/process was reported by the stub, assume the current
5837 if (ptid_equal (ptid
, null_ptid
))
5838 ptid
= inferior_ptid
;
5840 if (status
->kind
!= TARGET_WAITKIND_EXITED
5841 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5843 /* Expedited registers. */
5844 if (stop_reply
->regcache
)
5846 struct regcache
*regcache
5847 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5852 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5854 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5855 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5858 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5859 remote_watch_data_address
= stop_reply
->watch_data_address
;
5861 remote_notice_new_inferior (ptid
, 0);
5862 demand_private_info (ptid
)->core
= stop_reply
->core
;
5865 stop_reply_xfree (stop_reply
);
5869 /* The non-stop mode version of target_wait. */
5872 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5874 struct remote_state
*rs
= get_remote_state ();
5875 struct stop_reply
*stop_reply
;
5879 /* If in non-stop mode, get out of getpkt even if a
5880 notification is received. */
5882 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5883 0 /* forever */, &is_notif
);
5886 if (ret
!= -1 && !is_notif
)
5889 case 'E': /* Error of some sort. */
5890 /* We're out of sync with the target now. Did it continue
5891 or not? We can't tell which thread it was in non-stop,
5892 so just ignore this. */
5893 warning (_("Remote failure reply: %s"), rs
->buf
);
5895 case 'O': /* Console output. */
5896 remote_console_output (rs
->buf
+ 1);
5899 warning (_("Invalid remote reply: %s"), rs
->buf
);
5903 /* Acknowledge a pending stop reply that may have arrived in the
5905 if (notif_client_stop
.pending_event
!= NULL
)
5906 remote_notif_get_pending_events (¬if_client_stop
);
5908 /* If indeed we noticed a stop reply, we're done. */
5909 stop_reply
= queued_stop_reply (ptid
);
5910 if (stop_reply
!= NULL
)
5911 return process_stop_reply (stop_reply
, status
);
5913 /* Still no event. If we're just polling for an event, then
5914 return to the event loop. */
5915 if (options
& TARGET_WNOHANG
)
5917 status
->kind
= TARGET_WAITKIND_IGNORE
;
5918 return minus_one_ptid
;
5921 /* Otherwise do a blocking wait. */
5922 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5923 1 /* forever */, &is_notif
);
5927 /* Wait until the remote machine stops, then return, storing status in
5928 STATUS just as `wait' would. */
5931 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5933 struct remote_state
*rs
= get_remote_state ();
5934 ptid_t event_ptid
= null_ptid
;
5936 struct stop_reply
*stop_reply
;
5940 status
->kind
= TARGET_WAITKIND_IGNORE
;
5941 status
->value
.integer
= 0;
5943 stop_reply
= queued_stop_reply (ptid
);
5944 if (stop_reply
!= NULL
)
5945 return process_stop_reply (stop_reply
, status
);
5947 if (rs
->cached_wait_status
)
5948 /* Use the cached wait status, but only once. */
5949 rs
->cached_wait_status
= 0;
5955 if (!target_is_async_p ())
5957 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5958 /* If the user hit C-c before this packet, or between packets,
5959 pretend that it was hit right here. */
5960 if (check_quit_flag ())
5963 sync_remote_interrupt (SIGINT
);
5967 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5968 _never_ wait for ever -> test on target_is_async_p().
5969 However, before we do that we need to ensure that the caller
5970 knows how to take the target into/out of async mode. */
5971 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5972 wait_forever_enabled_p
, &is_notif
);
5974 if (!target_is_async_p ())
5975 signal (SIGINT
, ofunc
);
5977 /* GDB gets a notification. Return to core as this event is
5979 if (ret
!= -1 && is_notif
)
5980 return minus_one_ptid
;
5985 remote_stopped_by_watchpoint_p
= 0;
5987 /* We got something. */
5988 rs
->waiting_for_stop_reply
= 0;
5990 /* Assume that the target has acknowledged Ctrl-C unless we receive
5991 an 'F' or 'O' packet. */
5992 if (buf
[0] != 'F' && buf
[0] != 'O')
5993 rs
->ctrlc_pending_p
= 0;
5997 case 'E': /* Error of some sort. */
5998 /* We're out of sync with the target now. Did it continue or
5999 not? Not is more likely, so report a stop. */
6000 warning (_("Remote failure reply: %s"), buf
);
6001 status
->kind
= TARGET_WAITKIND_STOPPED
;
6002 status
->value
.sig
= GDB_SIGNAL_0
;
6004 case 'F': /* File-I/O request. */
6005 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6006 rs
->ctrlc_pending_p
= 0;
6008 case 'T': case 'S': case 'X': case 'W':
6010 struct stop_reply
*stop_reply
6011 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6014 event_ptid
= process_stop_reply (stop_reply
, status
);
6017 case 'O': /* Console output. */
6018 remote_console_output (buf
+ 1);
6020 /* The target didn't really stop; keep waiting. */
6021 rs
->waiting_for_stop_reply
= 1;
6025 if (last_sent_signal
!= GDB_SIGNAL_0
)
6027 /* Zero length reply means that we tried 'S' or 'C' and the
6028 remote system doesn't support it. */
6029 target_terminal_ours_for_output ();
6031 ("Can't send signals to this remote system. %s not sent.\n",
6032 gdb_signal_to_name (last_sent_signal
));
6033 last_sent_signal
= GDB_SIGNAL_0
;
6034 target_terminal_inferior ();
6036 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
6037 putpkt ((char *) buf
);
6039 /* We just told the target to resume, so a stop reply is in
6041 rs
->waiting_for_stop_reply
= 1;
6044 /* else fallthrough */
6046 warning (_("Invalid remote reply: %s"), buf
);
6048 rs
->waiting_for_stop_reply
= 1;
6052 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6054 /* Nothing interesting happened. If we're doing a non-blocking
6055 poll, we're done. Otherwise, go back to waiting. */
6056 if (options
& TARGET_WNOHANG
)
6057 return minus_one_ptid
;
6061 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6062 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6064 if (!ptid_equal (event_ptid
, null_ptid
))
6065 record_currthread (event_ptid
);
6067 event_ptid
= inferior_ptid
;
6070 /* A process exit. Invalidate our notion of current thread. */
6071 record_currthread (minus_one_ptid
);
6076 /* Wait until the remote machine stops, then return, storing status in
6077 STATUS just as `wait' would. */
6080 remote_wait (struct target_ops
*ops
,
6081 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6086 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6088 event_ptid
= remote_wait_as (ptid
, status
, options
);
6090 if (target_can_async_p ())
6092 /* If there are are events left in the queue tell the event loop
6094 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6095 mark_async_event_handler (remote_async_inferior_event_token
);
6101 /* Fetch a single register using a 'p' packet. */
6104 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6106 struct remote_state
*rs
= get_remote_state ();
6108 char regp
[MAX_REGISTER_SIZE
];
6111 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6114 if (reg
->pnum
== -1)
6119 p
+= hexnumstr (p
, reg
->pnum
);
6122 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6126 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6130 case PACKET_UNKNOWN
:
6133 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6134 gdbarch_register_name (get_regcache_arch (regcache
),
6139 /* If this register is unfetchable, tell the regcache. */
6142 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6146 /* Otherwise, parse and supply the value. */
6152 error (_("fetch_register_using_p: early buf termination"));
6154 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6157 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6161 /* Fetch the registers included in the target's 'g' packet. */
6164 send_g_packet (void)
6166 struct remote_state
*rs
= get_remote_state ();
6169 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6170 remote_send (&rs
->buf
, &rs
->buf_size
);
6172 /* We can get out of synch in various cases. If the first character
6173 in the buffer is not a hex character, assume that has happened
6174 and try to fetch another packet to read. */
6175 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6176 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6177 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6178 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6181 fprintf_unfiltered (gdb_stdlog
,
6182 "Bad register packet; fetching a new packet\n");
6183 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6186 buf_len
= strlen (rs
->buf
);
6188 /* Sanity check the received packet. */
6189 if (buf_len
% 2 != 0)
6190 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6196 process_g_packet (struct regcache
*regcache
)
6198 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6199 struct remote_state
*rs
= get_remote_state ();
6200 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6205 buf_len
= strlen (rs
->buf
);
6207 /* Further sanity checks, with knowledge of the architecture. */
6208 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6209 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6211 /* Save the size of the packet sent to us by the target. It is used
6212 as a heuristic when determining the max size of packets that the
6213 target can safely receive. */
6214 if (rsa
->actual_register_packet_size
== 0)
6215 rsa
->actual_register_packet_size
= buf_len
;
6217 /* If this is smaller than we guessed the 'g' packet would be,
6218 update our records. A 'g' reply that doesn't include a register's
6219 value implies either that the register is not available, or that
6220 the 'p' packet must be used. */
6221 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6223 rsa
->sizeof_g_packet
= buf_len
/ 2;
6225 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6227 if (rsa
->regs
[i
].pnum
== -1)
6230 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6231 rsa
->regs
[i
].in_g_packet
= 0;
6233 rsa
->regs
[i
].in_g_packet
= 1;
6237 regs
= alloca (rsa
->sizeof_g_packet
);
6239 /* Unimplemented registers read as all bits zero. */
6240 memset (regs
, 0, rsa
->sizeof_g_packet
);
6242 /* Reply describes registers byte by byte, each byte encoded as two
6243 hex characters. Suck them all up, then supply them to the
6244 register cacheing/storage mechanism. */
6247 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6249 if (p
[0] == 0 || p
[1] == 0)
6250 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6251 internal_error (__FILE__
, __LINE__
,
6252 _("unexpected end of 'g' packet reply"));
6254 if (p
[0] == 'x' && p
[1] == 'x')
6255 regs
[i
] = 0; /* 'x' */
6257 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6261 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6263 struct packet_reg
*r
= &rsa
->regs
[i
];
6267 if (r
->offset
* 2 >= strlen (rs
->buf
))
6268 /* This shouldn't happen - we adjusted in_g_packet above. */
6269 internal_error (__FILE__
, __LINE__
,
6270 _("unexpected end of 'g' packet reply"));
6271 else if (rs
->buf
[r
->offset
* 2] == 'x')
6273 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6274 /* The register isn't available, mark it as such (at
6275 the same time setting the value to zero). */
6276 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6279 regcache_raw_supply (regcache
, r
->regnum
,
6286 fetch_registers_using_g (struct regcache
*regcache
)
6289 process_g_packet (regcache
);
6292 /* Make the remote selected traceframe match GDB's selected
6296 set_remote_traceframe (void)
6300 if (remote_traceframe_number
== get_traceframe_number ())
6303 /* Avoid recursion, remote_trace_find calls us again. */
6304 remote_traceframe_number
= get_traceframe_number ();
6306 newnum
= target_trace_find (tfind_number
,
6307 get_traceframe_number (), 0, 0, NULL
);
6309 /* Should not happen. If it does, all bets are off. */
6310 if (newnum
!= get_traceframe_number ())
6311 warning (_("could not set remote traceframe"));
6315 remote_fetch_registers (struct target_ops
*ops
,
6316 struct regcache
*regcache
, int regnum
)
6318 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6321 set_remote_traceframe ();
6322 set_general_thread (inferior_ptid
);
6326 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6328 gdb_assert (reg
!= NULL
);
6330 /* If this register might be in the 'g' packet, try that first -
6331 we are likely to read more than one register. If this is the
6332 first 'g' packet, we might be overly optimistic about its
6333 contents, so fall back to 'p'. */
6334 if (reg
->in_g_packet
)
6336 fetch_registers_using_g (regcache
);
6337 if (reg
->in_g_packet
)
6341 if (fetch_register_using_p (regcache
, reg
))
6344 /* This register is not available. */
6345 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6350 fetch_registers_using_g (regcache
);
6352 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6353 if (!rsa
->regs
[i
].in_g_packet
)
6354 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6356 /* This register is not available. */
6357 regcache_raw_supply (regcache
, i
, NULL
);
6361 /* Prepare to store registers. Since we may send them all (using a
6362 'G' request), we have to read out the ones we don't want to change
6366 remote_prepare_to_store (struct regcache
*regcache
)
6368 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6370 gdb_byte buf
[MAX_REGISTER_SIZE
];
6372 /* Make sure the entire registers array is valid. */
6373 switch (remote_protocol_packets
[PACKET_P
].support
)
6375 case PACKET_DISABLE
:
6376 case PACKET_SUPPORT_UNKNOWN
:
6377 /* Make sure all the necessary registers are cached. */
6378 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6379 if (rsa
->regs
[i
].in_g_packet
)
6380 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6387 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6388 packet was not recognized. */
6391 store_register_using_P (const struct regcache
*regcache
,
6392 struct packet_reg
*reg
)
6394 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6395 struct remote_state
*rs
= get_remote_state ();
6396 /* Try storing a single register. */
6397 char *buf
= rs
->buf
;
6398 gdb_byte regp
[MAX_REGISTER_SIZE
];
6401 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6404 if (reg
->pnum
== -1)
6407 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6408 p
= buf
+ strlen (buf
);
6409 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6410 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6412 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6414 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6419 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6420 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6421 case PACKET_UNKNOWN
:
6424 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6428 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6429 contents of the register cache buffer. FIXME: ignores errors. */
6432 store_registers_using_G (const struct regcache
*regcache
)
6434 struct remote_state
*rs
= get_remote_state ();
6435 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6439 /* Extract all the registers in the regcache copying them into a
6444 regs
= alloca (rsa
->sizeof_g_packet
);
6445 memset (regs
, 0, rsa
->sizeof_g_packet
);
6446 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6448 struct packet_reg
*r
= &rsa
->regs
[i
];
6451 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6455 /* Command describes registers byte by byte,
6456 each byte encoded as two hex characters. */
6459 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6461 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6463 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6464 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6465 error (_("Could not write registers; remote failure reply '%s'"),
6469 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6470 of the register cache buffer. FIXME: ignores errors. */
6473 remote_store_registers (struct target_ops
*ops
,
6474 struct regcache
*regcache
, int regnum
)
6476 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6479 set_remote_traceframe ();
6480 set_general_thread (inferior_ptid
);
6484 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6486 gdb_assert (reg
!= NULL
);
6488 /* Always prefer to store registers using the 'P' packet if
6489 possible; we often change only a small number of registers.
6490 Sometimes we change a larger number; we'd need help from a
6491 higher layer to know to use 'G'. */
6492 if (store_register_using_P (regcache
, reg
))
6495 /* For now, don't complain if we have no way to write the
6496 register. GDB loses track of unavailable registers too
6497 easily. Some day, this may be an error. We don't have
6498 any way to read the register, either... */
6499 if (!reg
->in_g_packet
)
6502 store_registers_using_G (regcache
);
6506 store_registers_using_G (regcache
);
6508 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6509 if (!rsa
->regs
[i
].in_g_packet
)
6510 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6511 /* See above for why we do not issue an error here. */
6516 /* Return the number of hex digits in num. */
6519 hexnumlen (ULONGEST num
)
6523 for (i
= 0; num
!= 0; i
++)
6529 /* Set BUF to the minimum number of hex digits representing NUM. */
6532 hexnumstr (char *buf
, ULONGEST num
)
6534 int len
= hexnumlen (num
);
6536 return hexnumnstr (buf
, num
, len
);
6540 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6543 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6549 for (i
= width
- 1; i
>= 0; i
--)
6551 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6558 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6561 remote_address_masked (CORE_ADDR addr
)
6563 unsigned int address_size
= remote_address_size
;
6565 /* If "remoteaddresssize" was not set, default to target address size. */
6567 address_size
= gdbarch_addr_bit (target_gdbarch ());
6569 if (address_size
> 0
6570 && address_size
< (sizeof (ULONGEST
) * 8))
6572 /* Only create a mask when that mask can safely be constructed
6573 in a ULONGEST variable. */
6576 mask
= (mask
<< address_size
) - 1;
6582 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6583 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6584 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6585 (which may be more than *OUT_LEN due to escape characters). The
6586 total number of bytes in the output buffer will be at most
6590 remote_escape_output (const gdb_byte
*buffer
, int len
,
6591 gdb_byte
*out_buf
, int *out_len
,
6594 int input_index
, output_index
;
6597 for (input_index
= 0; input_index
< len
; input_index
++)
6599 gdb_byte b
= buffer
[input_index
];
6601 if (b
== '$' || b
== '#' || b
== '}')
6603 /* These must be escaped. */
6604 if (output_index
+ 2 > out_maxlen
)
6606 out_buf
[output_index
++] = '}';
6607 out_buf
[output_index
++] = b
^ 0x20;
6611 if (output_index
+ 1 > out_maxlen
)
6613 out_buf
[output_index
++] = b
;
6617 *out_len
= input_index
;
6618 return output_index
;
6621 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6622 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6623 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6625 This function reverses remote_escape_output. It allows more
6626 escaped characters than that function does, in particular because
6627 '*' must be escaped to avoid the run-length encoding processing
6628 in reading packets. */
6631 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6632 gdb_byte
*out_buf
, int out_maxlen
)
6634 int input_index
, output_index
;
6639 for (input_index
= 0; input_index
< len
; input_index
++)
6641 gdb_byte b
= buffer
[input_index
];
6643 if (output_index
+ 1 > out_maxlen
)
6645 warning (_("Received too much data from remote target;"
6646 " ignoring overflow."));
6647 return output_index
;
6652 out_buf
[output_index
++] = b
^ 0x20;
6658 out_buf
[output_index
++] = b
;
6662 error (_("Unmatched escape character in target response."));
6664 return output_index
;
6667 /* Determine whether the remote target supports binary downloading.
6668 This is accomplished by sending a no-op memory write of zero length
6669 to the target at the specified address. It does not suffice to send
6670 the whole packet, since many stubs strip the eighth bit and
6671 subsequently compute a wrong checksum, which causes real havoc with
6674 NOTE: This can still lose if the serial line is not eight-bit
6675 clean. In cases like this, the user should clear "remote
6679 check_binary_download (CORE_ADDR addr
)
6681 struct remote_state
*rs
= get_remote_state ();
6683 switch (remote_protocol_packets
[PACKET_X
].support
)
6685 case PACKET_DISABLE
:
6689 case PACKET_SUPPORT_UNKNOWN
:
6695 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6697 p
+= hexnumstr (p
, (ULONGEST
) 0);
6701 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6704 if (rs
->buf
[0] == '\0')
6707 fprintf_unfiltered (gdb_stdlog
,
6708 "binary downloading NOT "
6709 "supported by target\n");
6710 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6715 fprintf_unfiltered (gdb_stdlog
,
6716 "binary downloading supported by target\n");
6717 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6724 /* Write memory data directly to the remote machine.
6725 This does not inform the data cache; the data cache uses this.
6726 HEADER is the starting part of the packet.
6727 MEMADDR is the address in the remote memory space.
6728 MYADDR is the address of the buffer in our space.
6729 LEN is the number of bytes.
6730 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6731 should send data as binary ('X'), or hex-encoded ('M').
6733 The function creates packet of the form
6734 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6736 where encoding of <DATA> is termined by PACKET_FORMAT.
6738 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6741 Returns the number of bytes transferred, or 0 (setting errno) for
6742 error. Only transfer a single packet. */
6745 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6746 const gdb_byte
*myaddr
, ssize_t len
,
6747 char packet_format
, int use_length
)
6749 struct remote_state
*rs
= get_remote_state ();
6759 if (packet_format
!= 'X' && packet_format
!= 'M')
6760 internal_error (__FILE__
, __LINE__
,
6761 _("remote_write_bytes_aux: bad packet format"));
6766 payload_size
= get_memory_write_packet_size ();
6768 /* The packet buffer will be large enough for the payload;
6769 get_memory_packet_size ensures this. */
6772 /* Compute the size of the actual payload by subtracting out the
6773 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6775 payload_size
-= strlen ("$,:#NN");
6777 /* The comma won't be used. */
6779 header_length
= strlen (header
);
6780 payload_size
-= header_length
;
6781 payload_size
-= hexnumlen (memaddr
);
6783 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6785 strcat (rs
->buf
, header
);
6786 p
= rs
->buf
+ strlen (header
);
6788 /* Compute a best guess of the number of bytes actually transfered. */
6789 if (packet_format
== 'X')
6791 /* Best guess at number of bytes that will fit. */
6792 todo
= min (len
, payload_size
);
6794 payload_size
-= hexnumlen (todo
);
6795 todo
= min (todo
, payload_size
);
6799 /* Num bytes that will fit. */
6800 todo
= min (len
, payload_size
/ 2);
6802 payload_size
-= hexnumlen (todo
);
6803 todo
= min (todo
, payload_size
/ 2);
6807 internal_error (__FILE__
, __LINE__
,
6808 _("minimum packet size too small to write data"));
6810 /* If we already need another packet, then try to align the end
6811 of this packet to a useful boundary. */
6812 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6813 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6815 /* Append "<memaddr>". */
6816 memaddr
= remote_address_masked (memaddr
);
6817 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6824 /* Append <len>. Retain the location/size of <len>. It may need to
6825 be adjusted once the packet body has been created. */
6827 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6835 /* Append the packet body. */
6836 if (packet_format
== 'X')
6838 /* Binary mode. Send target system values byte by byte, in
6839 increasing byte addresses. Only escape certain critical
6841 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6842 &nr_bytes
, payload_size
);
6844 /* If not all TODO bytes fit, then we'll need another packet. Make
6845 a second try to keep the end of the packet aligned. Don't do
6846 this if the packet is tiny. */
6847 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6851 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6853 if (new_nr_bytes
!= nr_bytes
)
6854 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6855 (gdb_byte
*) p
, &nr_bytes
,
6859 p
+= payload_length
;
6860 if (use_length
&& nr_bytes
< todo
)
6862 /* Escape chars have filled up the buffer prematurely,
6863 and we have actually sent fewer bytes than planned.
6864 Fix-up the length field of the packet. Use the same
6865 number of characters as before. */
6866 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6867 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6872 /* Normal mode: Send target system values byte by byte, in
6873 increasing byte addresses. Each byte is encoded as a two hex
6875 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6879 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6880 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6882 if (rs
->buf
[0] == 'E')
6884 /* There is no correspondance between what the remote protocol
6885 uses for errors and errno codes. We would like a cleaner way
6886 of representing errors (big enough to include errno codes,
6887 bfd_error codes, and others). But for now just return EIO. */
6892 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6893 fewer bytes than we'd planned. */
6897 /* Write memory data directly to the remote machine.
6898 This does not inform the data cache; the data cache uses this.
6899 MEMADDR is the address in the remote memory space.
6900 MYADDR is the address of the buffer in our space.
6901 LEN is the number of bytes.
6903 Returns number of bytes transferred, or 0 (setting errno) for
6904 error. Only transfer a single packet. */
6907 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6909 char *packet_format
= 0;
6911 /* Check whether the target supports binary download. */
6912 check_binary_download (memaddr
);
6914 switch (remote_protocol_packets
[PACKET_X
].support
)
6917 packet_format
= "X";
6919 case PACKET_DISABLE
:
6920 packet_format
= "M";
6922 case PACKET_SUPPORT_UNKNOWN
:
6923 internal_error (__FILE__
, __LINE__
,
6924 _("remote_write_bytes: bad internal state"));
6926 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6929 return remote_write_bytes_aux (packet_format
,
6930 memaddr
, myaddr
, len
, packet_format
[0], 1);
6933 /* Read memory data directly from the remote machine.
6934 This does not use the data cache; the data cache uses this.
6935 MEMADDR is the address in the remote memory space.
6936 MYADDR is the address of the buffer in our space.
6937 LEN is the number of bytes.
6939 Returns number of bytes transferred, or 0 for error. */
6942 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6944 struct remote_state
*rs
= get_remote_state ();
6945 int max_buf_size
; /* Max size of packet output buffer. */
6953 max_buf_size
= get_memory_read_packet_size ();
6954 /* The packet buffer will be large enough for the payload;
6955 get_memory_packet_size ensures this. */
6957 /* Number if bytes that will fit. */
6958 todo
= min (len
, max_buf_size
/ 2);
6960 /* Construct "m"<memaddr>","<len>". */
6961 memaddr
= remote_address_masked (memaddr
);
6964 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6966 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6969 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6970 if (rs
->buf
[0] == 'E'
6971 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6972 && rs
->buf
[3] == '\0')
6974 /* There is no correspondance between what the remote protocol
6975 uses for errors and errno codes. We would like a cleaner way
6976 of representing errors (big enough to include errno codes,
6977 bfd_error codes, and others). But for now just return
6982 /* Reply describes memory byte by byte, each byte encoded as two hex
6985 i
= hex2bin (p
, myaddr
, todo
);
6986 /* Return what we have. Let higher layers handle partial reads. */
6991 /* Read or write LEN bytes from inferior memory at MEMADDR,
6992 transferring to or from debugger address BUFFER. Write to inferior
6993 if SHOULD_WRITE is nonzero. Returns length of data written or
6994 read; 0 for error. TARGET is unused. */
6997 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6998 int should_write
, struct mem_attrib
*attrib
,
6999 struct target_ops
*target
)
7003 set_remote_traceframe ();
7004 set_general_thread (inferior_ptid
);
7007 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
7009 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
7014 /* Sends a packet with content determined by the printf format string
7015 FORMAT and the remaining arguments, then gets the reply. Returns
7016 whether the packet was a success, a failure, or unknown. */
7018 static enum packet_result
7019 remote_send_printf (const char *format
, ...)
7021 struct remote_state
*rs
= get_remote_state ();
7022 int max_size
= get_remote_packet_size ();
7025 va_start (ap
, format
);
7028 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7029 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7031 if (putpkt (rs
->buf
) < 0)
7032 error (_("Communication problem with target."));
7035 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7037 return packet_check_result (rs
->buf
);
7041 restore_remote_timeout (void *p
)
7043 int value
= *(int *)p
;
7045 remote_timeout
= value
;
7048 /* Flash writing can take quite some time. We'll set
7049 effectively infinite timeout for flash operations.
7050 In future, we'll need to decide on a better approach. */
7051 static const int remote_flash_timeout
= 1000;
7054 remote_flash_erase (struct target_ops
*ops
,
7055 ULONGEST address
, LONGEST length
)
7057 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7058 int saved_remote_timeout
= remote_timeout
;
7059 enum packet_result ret
;
7060 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7061 &saved_remote_timeout
);
7063 remote_timeout
= remote_flash_timeout
;
7065 ret
= remote_send_printf ("vFlashErase:%s,%s",
7066 phex (address
, addr_size
),
7070 case PACKET_UNKNOWN
:
7071 error (_("Remote target does not support flash erase"));
7073 error (_("Error erasing flash with vFlashErase packet"));
7078 do_cleanups (back_to
);
7082 remote_flash_write (struct target_ops
*ops
,
7083 ULONGEST address
, LONGEST length
,
7084 const gdb_byte
*data
)
7086 int saved_remote_timeout
= remote_timeout
;
7088 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7089 &saved_remote_timeout
);
7091 remote_timeout
= remote_flash_timeout
;
7092 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
7093 do_cleanups (back_to
);
7099 remote_flash_done (struct target_ops
*ops
)
7101 int saved_remote_timeout
= remote_timeout
;
7103 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7104 &saved_remote_timeout
);
7106 remote_timeout
= remote_flash_timeout
;
7107 ret
= remote_send_printf ("vFlashDone");
7108 do_cleanups (back_to
);
7112 case PACKET_UNKNOWN
:
7113 error (_("Remote target does not support vFlashDone"));
7115 error (_("Error finishing flash operation"));
7122 remote_files_info (struct target_ops
*ignore
)
7124 puts_filtered ("Debugging a target over a serial line.\n");
7127 /* Stuff for dealing with the packets which are part of this protocol.
7128 See comment at top of file for details. */
7130 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7131 error to higher layers. Called when a serial error is detected.
7132 The exception message is STRING, followed by a colon and a blank,
7133 the system error message for errno at function entry and final dot
7134 for output compatibility with throw_perror_with_name. */
7137 unpush_and_perror (const char *string
)
7139 int saved_errno
= errno
;
7141 remote_unpush_target ();
7142 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7143 safe_strerror (saved_errno
));
7146 /* Read a single character from the remote end. */
7149 readchar (int timeout
)
7152 struct remote_state
*rs
= get_remote_state ();
7154 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7159 switch ((enum serial_rc
) ch
)
7162 remote_unpush_target ();
7163 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7166 unpush_and_perror (_("Remote communication error. "
7167 "Target disconnected."));
7169 case SERIAL_TIMEOUT
:
7175 /* Wrapper for serial_write that closes the target and throws if
7179 remote_serial_write (const char *str
, int len
)
7181 struct remote_state
*rs
= get_remote_state ();
7183 if (serial_write (rs
->remote_desc
, str
, len
))
7185 unpush_and_perror (_("Remote communication error. "
7186 "Target disconnected."));
7190 /* Send the command in *BUF to the remote machine, and read the reply
7191 into *BUF. Report an error if we get an error reply. Resize
7192 *BUF using xrealloc if necessary to hold the result, and update
7196 remote_send (char **buf
,
7200 getpkt (buf
, sizeof_buf
, 0);
7202 if ((*buf
)[0] == 'E')
7203 error (_("Remote failure reply: %s"), *buf
);
7206 /* Return a pointer to an xmalloc'ed string representing an escaped
7207 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7208 etc. The caller is responsible for releasing the returned
7212 escape_buffer (const char *buf
, int n
)
7214 struct cleanup
*old_chain
;
7215 struct ui_file
*stb
;
7218 stb
= mem_fileopen ();
7219 old_chain
= make_cleanup_ui_file_delete (stb
);
7221 fputstrn_unfiltered (buf
, n
, 0, stb
);
7222 str
= ui_file_xstrdup (stb
, NULL
);
7223 do_cleanups (old_chain
);
7227 /* Display a null-terminated packet on stdout, for debugging, using C
7231 print_packet (char *buf
)
7233 puts_filtered ("\"");
7234 fputstr_filtered (buf
, '"', gdb_stdout
);
7235 puts_filtered ("\"");
7241 return putpkt_binary (buf
, strlen (buf
));
7244 /* Send a packet to the remote machine, with error checking. The data
7245 of the packet is in BUF. The string in BUF can be at most
7246 get_remote_packet_size () - 5 to account for the $, # and checksum,
7247 and for a possible /0 if we are debugging (remote_debug) and want
7248 to print the sent packet as a string. */
7251 putpkt_binary (char *buf
, int cnt
)
7253 struct remote_state
*rs
= get_remote_state ();
7255 unsigned char csum
= 0;
7256 char *buf2
= alloca (cnt
+ 6);
7263 /* Catch cases like trying to read memory or listing threads while
7264 we're waiting for a stop reply. The remote server wouldn't be
7265 ready to handle this request, so we'd hang and timeout. We don't
7266 have to worry about this in synchronous mode, because in that
7267 case it's not possible to issue a command while the target is
7268 running. This is not a problem in non-stop mode, because in that
7269 case, the stub is always ready to process serial input. */
7270 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7271 error (_("Cannot execute this command while the target is running."));
7273 /* We're sending out a new packet. Make sure we don't look at a
7274 stale cached response. */
7275 rs
->cached_wait_status
= 0;
7277 /* Copy the packet into buffer BUF2, encapsulating it
7278 and giving it a checksum. */
7283 for (i
= 0; i
< cnt
; i
++)
7289 *p
++ = tohex ((csum
>> 4) & 0xf);
7290 *p
++ = tohex (csum
& 0xf);
7292 /* Send it over and over until we get a positive ack. */
7296 int started_error_output
= 0;
7300 struct cleanup
*old_chain
;
7304 str
= escape_buffer (buf2
, p
- buf2
);
7305 old_chain
= make_cleanup (xfree
, str
);
7306 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7307 gdb_flush (gdb_stdlog
);
7308 do_cleanups (old_chain
);
7310 remote_serial_write (buf2
, p
- buf2
);
7312 /* If this is a no acks version of the remote protocol, send the
7313 packet and move on. */
7317 /* Read until either a timeout occurs (-2) or '+' is read.
7318 Handle any notification that arrives in the mean time. */
7321 ch
= readchar (remote_timeout
);
7329 case SERIAL_TIMEOUT
:
7332 if (started_error_output
)
7334 putchar_unfiltered ('\n');
7335 started_error_output
= 0;
7344 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7348 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7350 case SERIAL_TIMEOUT
:
7354 break; /* Retransmit buffer. */
7358 fprintf_unfiltered (gdb_stdlog
,
7359 "Packet instead of Ack, ignoring it\n");
7360 /* It's probably an old response sent because an ACK
7361 was lost. Gobble up the packet and ack it so it
7362 doesn't get retransmitted when we resend this
7365 remote_serial_write ("+", 1);
7366 continue; /* Now, go look for +. */
7373 /* If we got a notification, handle it, and go back to looking
7375 /* We've found the start of a notification. Now
7376 collect the data. */
7377 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7382 struct cleanup
*old_chain
;
7385 str
= escape_buffer (rs
->buf
, val
);
7386 old_chain
= make_cleanup (xfree
, str
);
7387 fprintf_unfiltered (gdb_stdlog
,
7388 " Notification received: %s\n",
7390 do_cleanups (old_chain
);
7392 handle_notification (rs
->buf
);
7393 /* We're in sync now, rewait for the ack. */
7400 if (!started_error_output
)
7402 started_error_output
= 1;
7403 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7405 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7406 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7415 if (!started_error_output
)
7417 started_error_output
= 1;
7418 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7420 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7424 break; /* Here to retransmit. */
7428 /* This is wrong. If doing a long backtrace, the user should be
7429 able to get out next time we call QUIT, without anything as
7430 violent as interrupt_query. If we want to provide a way out of
7431 here without getting to the next QUIT, it should be based on
7432 hitting ^C twice as in remote_wait. */
7443 /* Come here after finding the start of a frame when we expected an
7444 ack. Do our best to discard the rest of this packet. */
7453 c
= readchar (remote_timeout
);
7456 case SERIAL_TIMEOUT
:
7457 /* Nothing we can do. */
7460 /* Discard the two bytes of checksum and stop. */
7461 c
= readchar (remote_timeout
);
7463 c
= readchar (remote_timeout
);
7466 case '*': /* Run length encoding. */
7467 /* Discard the repeat count. */
7468 c
= readchar (remote_timeout
);
7473 /* A regular character. */
7479 /* Come here after finding the start of the frame. Collect the rest
7480 into *BUF, verifying the checksum, length, and handling run-length
7481 compression. NUL terminate the buffer. If there is not enough room,
7482 expand *BUF using xrealloc.
7484 Returns -1 on error, number of characters in buffer (ignoring the
7485 trailing NULL) on success. (could be extended to return one of the
7486 SERIAL status indications). */
7489 read_frame (char **buf_p
,
7496 struct remote_state
*rs
= get_remote_state ();
7503 c
= readchar (remote_timeout
);
7506 case SERIAL_TIMEOUT
:
7508 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7512 fputs_filtered ("Saw new packet start in middle of old one\n",
7514 return -1; /* Start a new packet, count retries. */
7517 unsigned char pktcsum
;
7523 check_0
= readchar (remote_timeout
);
7525 check_1
= readchar (remote_timeout
);
7527 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7530 fputs_filtered ("Timeout in checksum, retrying\n",
7534 else if (check_0
< 0 || check_1
< 0)
7537 fputs_filtered ("Communication error in checksum\n",
7542 /* Don't recompute the checksum; with no ack packets we
7543 don't have any way to indicate a packet retransmission
7548 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7549 if (csum
== pktcsum
)
7554 struct cleanup
*old_chain
;
7557 str
= escape_buffer (buf
, bc
);
7558 old_chain
= make_cleanup (xfree
, str
);
7559 fprintf_unfiltered (gdb_stdlog
,
7560 "Bad checksum, sentsum=0x%x, "
7561 "csum=0x%x, buf=%s\n",
7562 pktcsum
, csum
, str
);
7563 do_cleanups (old_chain
);
7565 /* Number of characters in buffer ignoring trailing
7569 case '*': /* Run length encoding. */
7574 c
= readchar (remote_timeout
);
7576 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7578 /* The character before ``*'' is repeated. */
7580 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7582 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7584 /* Make some more room in the buffer. */
7585 *sizeof_buf
+= repeat
;
7586 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7590 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7596 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7600 if (bc
>= *sizeof_buf
- 1)
7602 /* Make some more room in the buffer. */
7604 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7615 /* Read a packet from the remote machine, with error checking, and
7616 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7617 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7618 rather than timing out; this is used (in synchronous mode) to wait
7619 for a target that is is executing user code to stop. */
7620 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7621 don't have to change all the calls to getpkt to deal with the
7622 return value, because at the moment I don't know what the right
7623 thing to do it for those. */
7631 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7635 /* Read a packet from the remote machine, with error checking, and
7636 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7637 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7638 rather than timing out; this is used (in synchronous mode) to wait
7639 for a target that is is executing user code to stop. If FOREVER ==
7640 0, this function is allowed to time out gracefully and return an
7641 indication of this to the caller. Otherwise return the number of
7642 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7643 enough reason to return to the caller. *IS_NOTIF is an output
7644 boolean that indicates whether *BUF holds a notification or not
7645 (a regular packet). */
7648 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7649 int expecting_notif
, int *is_notif
)
7651 struct remote_state
*rs
= get_remote_state ();
7657 /* We're reading a new response. Make sure we don't look at a
7658 previously cached response. */
7659 rs
->cached_wait_status
= 0;
7661 strcpy (*buf
, "timeout");
7664 timeout
= watchdog
> 0 ? watchdog
: -1;
7665 else if (expecting_notif
)
7666 timeout
= 0; /* There should already be a char in the buffer. If
7669 timeout
= remote_timeout
;
7673 /* Process any number of notifications, and then return when
7677 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7679 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7681 /* This can loop forever if the remote side sends us
7682 characters continuously, but if it pauses, we'll get
7683 SERIAL_TIMEOUT from readchar because of timeout. Then
7684 we'll count that as a retry.
7686 Note that even when forever is set, we will only wait
7687 forever prior to the start of a packet. After that, we
7688 expect characters to arrive at a brisk pace. They should
7689 show up within remote_timeout intervals. */
7691 c
= readchar (timeout
);
7692 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7694 if (c
== SERIAL_TIMEOUT
)
7696 if (expecting_notif
)
7697 return -1; /* Don't complain, it's normal to not get
7698 anything in this case. */
7700 if (forever
) /* Watchdog went off? Kill the target. */
7703 remote_unpush_target ();
7704 throw_error (TARGET_CLOSE_ERROR
,
7705 _("Watchdog timeout has expired. "
7706 "Target detached."));
7709 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7713 /* We've found the start of a packet or notification.
7714 Now collect the data. */
7715 val
= read_frame (buf
, sizeof_buf
);
7720 remote_serial_write ("-", 1);
7723 if (tries
> MAX_TRIES
)
7725 /* We have tried hard enough, and just can't receive the
7726 packet/notification. Give up. */
7727 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7729 /* Skip the ack char if we're in no-ack mode. */
7730 if (!rs
->noack_mode
)
7731 remote_serial_write ("+", 1);
7735 /* If we got an ordinary packet, return that to our caller. */
7740 struct cleanup
*old_chain
;
7743 str
= escape_buffer (*buf
, val
);
7744 old_chain
= make_cleanup (xfree
, str
);
7745 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7746 do_cleanups (old_chain
);
7749 /* Skip the ack char if we're in no-ack mode. */
7750 if (!rs
->noack_mode
)
7751 remote_serial_write ("+", 1);
7752 if (is_notif
!= NULL
)
7757 /* If we got a notification, handle it, and go back to looking
7761 gdb_assert (c
== '%');
7765 struct cleanup
*old_chain
;
7768 str
= escape_buffer (*buf
, val
);
7769 old_chain
= make_cleanup (xfree
, str
);
7770 fprintf_unfiltered (gdb_stdlog
,
7771 " Notification received: %s\n",
7773 do_cleanups (old_chain
);
7775 if (is_notif
!= NULL
)
7778 handle_notification (*buf
);
7780 /* Notifications require no acknowledgement. */
7782 if (expecting_notif
)
7789 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7791 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7795 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7798 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7803 /* A helper function that just calls putpkt; for type correctness. */
7806 putpkt_for_catch_errors (void *arg
)
7808 return putpkt (arg
);
7812 remote_kill (struct target_ops
*ops
)
7814 /* Use catch_errors so the user can quit from gdb even when we
7815 aren't on speaking terms with the remote system. */
7816 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7818 /* Don't wait for it to die. I'm not really sure it matters whether
7819 we do or not. For the existing stubs, kill is a noop. */
7820 target_mourn_inferior ();
7824 remote_vkill (int pid
, struct remote_state
*rs
)
7826 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7829 /* Tell the remote target to detach. */
7830 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7832 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7834 if (packet_ok (rs
->buf
,
7835 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7837 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7844 extended_remote_kill (struct target_ops
*ops
)
7847 int pid
= ptid_get_pid (inferior_ptid
);
7848 struct remote_state
*rs
= get_remote_state ();
7850 res
= remote_vkill (pid
, rs
);
7851 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7853 /* Don't try 'k' on a multi-process aware stub -- it has no way
7854 to specify the pid. */
7858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7859 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7862 /* Don't wait for it to die. I'm not really sure it matters whether
7863 we do or not. For the existing stubs, kill is a noop. */
7869 error (_("Can't kill process"));
7871 target_mourn_inferior ();
7875 remote_mourn (struct target_ops
*ops
)
7877 remote_mourn_1 (ops
);
7880 /* Worker function for remote_mourn. */
7882 remote_mourn_1 (struct target_ops
*target
)
7884 unpush_target (target
);
7886 /* remote_close takes care of doing most of the clean up. */
7887 generic_mourn_inferior ();
7891 extended_remote_mourn_1 (struct target_ops
*target
)
7893 struct remote_state
*rs
= get_remote_state ();
7895 /* In case we got here due to an error, but we're going to stay
7897 rs
->waiting_for_stop_reply
= 0;
7899 /* If the current general thread belonged to the process we just
7900 detached from or has exited, the remote side current general
7901 thread becomes undefined. Considering a case like this:
7903 - We just got here due to a detach.
7904 - The process that we're detaching from happens to immediately
7905 report a global breakpoint being hit in non-stop mode, in the
7906 same thread we had selected before.
7907 - GDB attaches to this process again.
7908 - This event happens to be the next event we handle.
7910 GDB would consider that the current general thread didn't need to
7911 be set on the stub side (with Hg), since for all it knew,
7912 GENERAL_THREAD hadn't changed.
7914 Notice that although in all-stop mode, the remote server always
7915 sets the current thread to the thread reporting the stop event,
7916 that doesn't happen in non-stop mode; in non-stop, the stub *must
7917 not* change the current thread when reporting a breakpoint hit,
7918 due to the decoupling of event reporting and event handling.
7920 To keep things simple, we always invalidate our notion of the
7922 record_currthread (minus_one_ptid
);
7924 /* Unlike "target remote", we do not want to unpush the target; then
7925 the next time the user says "run", we won't be connected. */
7927 /* Call common code to mark the inferior as not running. */
7928 generic_mourn_inferior ();
7930 if (!have_inferiors ())
7932 if (!remote_multi_process_p (rs
))
7934 /* Check whether the target is running now - some remote stubs
7935 automatically restart after kill. */
7937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7939 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7941 /* Assume that the target has been restarted. Set
7942 inferior_ptid so that bits of core GDB realizes
7943 there's something here, e.g., so that the user can
7944 say "kill" again. */
7945 inferior_ptid
= magic_null_ptid
;
7952 extended_remote_mourn (struct target_ops
*ops
)
7954 extended_remote_mourn_1 (ops
);
7958 extended_remote_supports_disable_randomization (void)
7960 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7965 extended_remote_disable_randomization (int val
)
7967 struct remote_state
*rs
= get_remote_state ();
7970 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7973 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7975 error (_("Target does not support QDisableRandomization."));
7976 if (strcmp (reply
, "OK") != 0)
7977 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7981 extended_remote_run (char *args
)
7983 struct remote_state
*rs
= get_remote_state ();
7986 /* If the user has disabled vRun support, or we have detected that
7987 support is not available, do not try it. */
7988 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7991 strcpy (rs
->buf
, "vRun;");
7992 len
= strlen (rs
->buf
);
7994 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7995 error (_("Remote file name too long for run packet"));
7996 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7998 gdb_assert (args
!= NULL
);
8001 struct cleanup
*back_to
;
8005 argv
= gdb_buildargv (args
);
8006 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
8007 for (i
= 0; argv
[i
] != NULL
; i
++)
8009 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8010 error (_("Argument list too long for run packet"));
8011 rs
->buf
[len
++] = ';';
8012 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
8014 do_cleanups (back_to
);
8017 rs
->buf
[len
++] = '\0';
8020 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8022 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
8024 /* We have a wait response. All is well. */
8027 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
8028 /* It wasn't disabled before, but it is now. */
8032 if (remote_exec_file
[0] == '\0')
8033 error (_("Running the default executable on the remote target failed; "
8034 "try \"set remote exec-file\"?"));
8036 error (_("Running \"%s\" on the remote target failed"),
8041 /* In the extended protocol we want to be able to do things like
8042 "run" and have them basically work as expected. So we need
8043 a special create_inferior function. We support changing the
8044 executable file and the command line arguments, but not the
8048 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
8049 char **env
, int from_tty
)
8053 struct remote_state
*rs
= get_remote_state ();
8055 /* If running asynchronously, register the target file descriptor
8056 with the event loop. */
8057 if (target_can_async_p ())
8058 target_async (inferior_event_handler
, 0);
8060 /* Disable address space randomization if requested (and supported). */
8061 if (extended_remote_supports_disable_randomization ())
8062 extended_remote_disable_randomization (disable_randomization
);
8064 /* Now restart the remote server. */
8065 run_worked
= extended_remote_run (args
) != -1;
8068 /* vRun was not supported. Fail if we need it to do what the
8070 if (remote_exec_file
[0])
8071 error (_("Remote target does not support \"set remote exec-file\""));
8073 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8075 /* Fall back to "R". */
8076 extended_remote_restart ();
8079 if (!have_inferiors ())
8081 /* Clean up from the last time we ran, before we mark the target
8082 running again. This will mark breakpoints uninserted, and
8083 get_offsets may insert breakpoints. */
8084 init_thread_list ();
8085 init_wait_for_inferior ();
8088 /* vRun's success return is a stop reply. */
8089 stop_reply
= run_worked
? rs
->buf
: NULL
;
8090 add_current_inferior_and_thread (stop_reply
);
8092 /* Get updated offsets, if the stub uses qOffsets. */
8097 extended_remote_create_inferior (struct target_ops
*ops
,
8098 char *exec_file
, char *args
,
8099 char **env
, int from_tty
)
8101 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
8105 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8106 the list of conditions (in agent expression bytecode format), if any, the
8107 target needs to evaluate. The output is placed into the packet buffer
8108 started from BUF and ended at BUF_END. */
8111 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8112 struct bp_target_info
*bp_tgt
, char *buf
,
8115 struct agent_expr
*aexpr
= NULL
;
8118 char *buf_start
= buf
;
8120 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8123 buf
+= strlen (buf
);
8124 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8127 /* Send conditions to the target and free the vector. */
8129 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8132 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8133 buf
+= strlen (buf
);
8134 for (i
= 0; i
< aexpr
->len
; ++i
)
8135 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8139 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8144 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8145 struct bp_target_info
*bp_tgt
, char *buf
)
8147 struct agent_expr
*aexpr
= NULL
;
8150 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8153 buf
+= strlen (buf
);
8155 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8156 buf
+= strlen (buf
);
8158 /* Concatenate all the agent expressions that are commands into the
8161 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8164 sprintf (buf
, "X%x,", aexpr
->len
);
8165 buf
+= strlen (buf
);
8166 for (i
= 0; i
< aexpr
->len
; ++i
)
8167 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8171 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8174 /* Insert a breakpoint. On targets that have software breakpoint
8175 support, we ask the remote target to do the work; on targets
8176 which don't, we insert a traditional memory breakpoint. */
8179 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8180 struct bp_target_info
*bp_tgt
)
8182 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8183 If it succeeds, then set the support to PACKET_ENABLE. If it
8184 fails, and the user has explicitly requested the Z support then
8185 report an error, otherwise, mark it disabled and go on. */
8187 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8189 CORE_ADDR addr
= bp_tgt
->placed_address
;
8190 struct remote_state
*rs
;
8193 struct condition_list
*cond
= NULL
;
8195 /* Make sure the remote is pointing at the right process, if
8197 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8198 set_general_process ();
8200 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8202 rs
= get_remote_state ();
8204 endbuf
= rs
->buf
+ get_remote_packet_size ();
8209 addr
= (ULONGEST
) remote_address_masked (addr
);
8210 p
+= hexnumstr (p
, addr
);
8211 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8213 if (remote_supports_cond_breakpoints ())
8214 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8216 if (remote_can_run_breakpoint_commands ())
8217 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8220 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8222 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8227 bp_tgt
->placed_address
= addr
;
8228 bp_tgt
->placed_size
= bpsize
;
8230 case PACKET_UNKNOWN
:
8235 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8239 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8240 struct bp_target_info
*bp_tgt
)
8242 CORE_ADDR addr
= bp_tgt
->placed_address
;
8243 struct remote_state
*rs
= get_remote_state ();
8245 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8248 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8250 /* Make sure the remote is pointing at the right process, if
8252 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8253 set_general_process ();
8259 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8260 p
+= hexnumstr (p
, addr
);
8261 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8264 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8266 return (rs
->buf
[0] == 'E');
8269 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8273 watchpoint_to_Z_packet (int type
)
8278 return Z_PACKET_WRITE_WP
;
8281 return Z_PACKET_READ_WP
;
8284 return Z_PACKET_ACCESS_WP
;
8287 internal_error (__FILE__
, __LINE__
,
8288 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8293 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8294 struct expression
*cond
)
8296 struct remote_state
*rs
= get_remote_state ();
8297 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8299 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8301 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8304 /* Make sure the remote is pointing at the right process, if
8306 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8307 set_general_process ();
8309 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8310 p
= strchr (rs
->buf
, '\0');
8311 addr
= remote_address_masked (addr
);
8312 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8313 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8316 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8318 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8322 case PACKET_UNKNOWN
:
8327 internal_error (__FILE__
, __LINE__
,
8328 _("remote_insert_watchpoint: reached end of function"));
8332 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8333 CORE_ADDR start
, int length
)
8335 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8337 return diff
< length
;
8342 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8343 struct expression
*cond
)
8345 struct remote_state
*rs
= get_remote_state ();
8346 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8348 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8350 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8353 /* Make sure the remote is pointing at the right process, if
8355 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8356 set_general_process ();
8358 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8359 p
= strchr (rs
->buf
, '\0');
8360 addr
= remote_address_masked (addr
);
8361 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8362 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8364 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8366 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8369 case PACKET_UNKNOWN
:
8374 internal_error (__FILE__
, __LINE__
,
8375 _("remote_remove_watchpoint: reached end of function"));
8379 int remote_hw_watchpoint_limit
= -1;
8380 int remote_hw_watchpoint_length_limit
= -1;
8381 int remote_hw_breakpoint_limit
= -1;
8384 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8386 if (remote_hw_watchpoint_length_limit
== 0)
8388 else if (remote_hw_watchpoint_length_limit
< 0)
8390 else if (len
<= remote_hw_watchpoint_length_limit
)
8397 remote_check_watch_resources (int type
, int cnt
, int ot
)
8399 if (type
== bp_hardware_breakpoint
)
8401 if (remote_hw_breakpoint_limit
== 0)
8403 else if (remote_hw_breakpoint_limit
< 0)
8405 else if (cnt
<= remote_hw_breakpoint_limit
)
8410 if (remote_hw_watchpoint_limit
== 0)
8412 else if (remote_hw_watchpoint_limit
< 0)
8416 else if (cnt
<= remote_hw_watchpoint_limit
)
8423 remote_stopped_by_watchpoint (void)
8425 return remote_stopped_by_watchpoint_p
;
8429 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8433 if (remote_stopped_by_watchpoint ())
8435 *addr_p
= remote_watch_data_address
;
8444 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8445 struct bp_target_info
*bp_tgt
)
8448 struct remote_state
*rs
;
8452 /* The length field should be set to the size of a breakpoint
8453 instruction, even though we aren't inserting one ourselves. */
8455 gdbarch_remote_breakpoint_from_pc
8456 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8458 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8461 /* Make sure the remote is pointing at the right process, if
8463 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8464 set_general_process ();
8466 rs
= get_remote_state ();
8468 endbuf
= rs
->buf
+ get_remote_packet_size ();
8474 addr
= remote_address_masked (bp_tgt
->placed_address
);
8475 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8476 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8478 if (remote_supports_cond_breakpoints ())
8479 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8481 if (remote_can_run_breakpoint_commands ())
8482 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8485 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8487 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8490 if (rs
->buf
[1] == '.')
8492 message
= strchr (rs
->buf
+ 2, '.');
8494 error (_("Remote failure reply: %s"), message
+ 1);
8497 case PACKET_UNKNOWN
:
8502 internal_error (__FILE__
, __LINE__
,
8503 _("remote_insert_hw_breakpoint: reached end of function"));
8508 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8509 struct bp_target_info
*bp_tgt
)
8512 struct remote_state
*rs
= get_remote_state ();
8514 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8516 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8519 /* Make sure the remote is pointing at the right process, if
8521 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8522 set_general_process ();
8528 addr
= remote_address_masked (bp_tgt
->placed_address
);
8529 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8530 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8533 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8535 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8538 case PACKET_UNKNOWN
:
8543 internal_error (__FILE__
, __LINE__
,
8544 _("remote_remove_hw_breakpoint: reached end of function"));
8547 /* Verify memory using the "qCRC:" request. */
8550 remote_verify_memory (struct target_ops
*ops
,
8551 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8553 struct remote_state
*rs
= get_remote_state ();
8554 unsigned long host_crc
, target_crc
;
8557 /* Make sure the remote is pointing at the right process. */
8558 set_general_process ();
8560 /* FIXME: assumes lma can fit into long. */
8561 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8562 (long) lma
, (long) size
);
8565 /* Be clever; compute the host_crc before waiting for target
8567 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8569 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8570 if (rs
->buf
[0] == 'E')
8573 if (rs
->buf
[0] != 'C')
8574 error (_("remote target does not support this operation"));
8576 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8577 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8579 return (host_crc
== target_crc
);
8582 /* compare-sections command
8584 With no arguments, compares each loadable section in the exec bfd
8585 with the same memory range on the target, and reports mismatches.
8586 Useful for verifying the image on the target against the exec file. */
8589 compare_sections_command (char *args
, int from_tty
)
8592 struct cleanup
*old_chain
;
8594 const char *sectname
;
8602 error (_("command cannot be used without an exec file"));
8604 /* Make sure the remote is pointing at the right process. */
8605 set_general_process ();
8607 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8609 if (!(s
->flags
& SEC_LOAD
))
8610 continue; /* Skip non-loadable section. */
8612 size
= bfd_get_section_size (s
);
8614 continue; /* Skip zero-length section. */
8616 sectname
= bfd_get_section_name (exec_bfd
, s
);
8617 if (args
&& strcmp (args
, sectname
) != 0)
8618 continue; /* Not the section selected by user. */
8620 matched
= 1; /* Do this section. */
8623 sectdata
= xmalloc (size
);
8624 old_chain
= make_cleanup (xfree
, sectdata
);
8625 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8627 res
= target_verify_memory (sectdata
, lma
, size
);
8630 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8631 paddress (target_gdbarch (), lma
),
8632 paddress (target_gdbarch (), lma
+ size
));
8634 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8635 paddress (target_gdbarch (), lma
),
8636 paddress (target_gdbarch (), lma
+ size
));
8638 printf_filtered ("matched.\n");
8641 printf_filtered ("MIS-MATCHED!\n");
8645 do_cleanups (old_chain
);
8648 warning (_("One or more sections of the remote executable does not match\n\
8649 the loaded file\n"));
8650 if (args
&& !matched
)
8651 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8654 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8655 into remote target. The number of bytes written to the remote
8656 target is returned, or -1 for error. */
8659 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8660 const char *annex
, const gdb_byte
*writebuf
,
8661 ULONGEST offset
, LONGEST len
,
8662 struct packet_config
*packet
)
8666 struct remote_state
*rs
= get_remote_state ();
8667 int max_size
= get_memory_write_packet_size ();
8669 if (packet
->support
== PACKET_DISABLE
)
8672 /* Insert header. */
8673 i
= snprintf (rs
->buf
, max_size
,
8674 "qXfer:%s:write:%s:%s:",
8675 object_name
, annex
? annex
: "",
8676 phex_nz (offset
, sizeof offset
));
8677 max_size
-= (i
+ 1);
8679 /* Escape as much data as fits into rs->buf. */
8680 buf_len
= remote_escape_output
8681 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8683 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8684 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8685 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8688 unpack_varlen_hex (rs
->buf
, &n
);
8692 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8693 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8694 number of bytes read is returned, or 0 for EOF, or -1 for error.
8695 The number of bytes read may be less than LEN without indicating an
8696 EOF. PACKET is checked and updated to indicate whether the remote
8697 target supports this object. */
8700 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8702 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8703 struct packet_config
*packet
)
8705 static char *finished_object
;
8706 static char *finished_annex
;
8707 static ULONGEST finished_offset
;
8709 struct remote_state
*rs
= get_remote_state ();
8710 LONGEST i
, n
, packet_len
;
8712 if (packet
->support
== PACKET_DISABLE
)
8715 /* Check whether we've cached an end-of-object packet that matches
8717 if (finished_object
)
8719 if (strcmp (object_name
, finished_object
) == 0
8720 && strcmp (annex
? annex
: "", finished_annex
) == 0
8721 && offset
== finished_offset
)
8724 /* Otherwise, we're now reading something different. Discard
8726 xfree (finished_object
);
8727 xfree (finished_annex
);
8728 finished_object
= NULL
;
8729 finished_annex
= NULL
;
8732 /* Request only enough to fit in a single packet. The actual data
8733 may not, since we don't know how much of it will need to be escaped;
8734 the target is free to respond with slightly less data. We subtract
8735 five to account for the response type and the protocol frame. */
8736 n
= min (get_remote_packet_size () - 5, len
);
8737 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8738 object_name
, annex
? annex
: "",
8739 phex_nz (offset
, sizeof offset
),
8740 phex_nz (n
, sizeof n
));
8741 i
= putpkt (rs
->buf
);
8746 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8747 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8750 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8751 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8753 /* 'm' means there is (or at least might be) more data after this
8754 batch. That does not make sense unless there's at least one byte
8755 of data in this reply. */
8756 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8757 error (_("Remote qXfer reply contained no data."));
8759 /* Got some data. */
8760 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8761 packet_len
- 1, readbuf
, n
);
8763 /* 'l' is an EOF marker, possibly including a final block of data,
8764 or possibly empty. If we have the final block of a non-empty
8765 object, record this fact to bypass a subsequent partial read. */
8766 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8768 finished_object
= xstrdup (object_name
);
8769 finished_annex
= xstrdup (annex
? annex
: "");
8770 finished_offset
= offset
+ i
;
8777 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8778 const char *annex
, gdb_byte
*readbuf
,
8779 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8781 struct remote_state
*rs
;
8786 set_remote_traceframe ();
8787 set_general_thread (inferior_ptid
);
8789 rs
= get_remote_state ();
8791 /* Handle memory using the standard memory routines. */
8792 if (object
== TARGET_OBJECT_MEMORY
)
8798 /* If the remote target is connected but not running, we should
8799 pass this request down to a lower stratum (e.g. the executable
8801 if (!target_has_execution
)
8804 if (writebuf
!= NULL
)
8805 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8807 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8811 else if (xfered
== 0 && errno
== 0)
8817 /* Handle SPU memory using qxfer packets. */
8818 if (object
== TARGET_OBJECT_SPU
)
8821 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8822 &remote_protocol_packets
8823 [PACKET_qXfer_spu_read
]);
8825 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8826 &remote_protocol_packets
8827 [PACKET_qXfer_spu_write
]);
8830 /* Handle extra signal info using qxfer packets. */
8831 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8834 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8835 &remote_protocol_packets
8836 [PACKET_qXfer_siginfo_read
]);
8838 return remote_write_qxfer (ops
, "siginfo", annex
,
8839 writebuf
, offset
, len
,
8840 &remote_protocol_packets
8841 [PACKET_qXfer_siginfo_write
]);
8844 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8847 return remote_read_qxfer (ops
, "statictrace", annex
,
8848 readbuf
, offset
, len
,
8849 &remote_protocol_packets
8850 [PACKET_qXfer_statictrace_read
]);
8855 /* Only handle flash writes. */
8856 if (writebuf
!= NULL
)
8862 case TARGET_OBJECT_FLASH
:
8863 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8867 else if (xfered
== 0 && errno
== 0)
8877 /* Map pre-existing objects onto letters. DO NOT do this for new
8878 objects!!! Instead specify new query packets. */
8881 case TARGET_OBJECT_AVR
:
8885 case TARGET_OBJECT_AUXV
:
8886 gdb_assert (annex
== NULL
);
8887 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8888 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8890 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8891 return remote_read_qxfer
8892 (ops
, "features", annex
, readbuf
, offset
, len
,
8893 &remote_protocol_packets
[PACKET_qXfer_features
]);
8895 case TARGET_OBJECT_LIBRARIES
:
8896 return remote_read_qxfer
8897 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8898 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8900 case TARGET_OBJECT_LIBRARIES_SVR4
:
8901 return remote_read_qxfer
8902 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8903 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8905 case TARGET_OBJECT_MEMORY_MAP
:
8906 gdb_assert (annex
== NULL
);
8907 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8908 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8910 case TARGET_OBJECT_OSDATA
:
8911 /* Should only get here if we're connected. */
8912 gdb_assert (rs
->remote_desc
);
8913 return remote_read_qxfer
8914 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8915 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8917 case TARGET_OBJECT_THREADS
:
8918 gdb_assert (annex
== NULL
);
8919 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8920 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8922 case TARGET_OBJECT_TRACEFRAME_INFO
:
8923 gdb_assert (annex
== NULL
);
8924 return remote_read_qxfer
8925 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8926 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8928 case TARGET_OBJECT_FDPIC
:
8929 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8930 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8932 case TARGET_OBJECT_OPENVMS_UIB
:
8933 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8934 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8936 case TARGET_OBJECT_BTRACE
:
8937 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8938 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8944 /* Note: a zero OFFSET and LEN can be used to query the minimum
8946 if (offset
== 0 && len
== 0)
8947 return (get_remote_packet_size ());
8948 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8949 large enough let the caller deal with it. */
8950 if (len
< get_remote_packet_size ())
8952 len
= get_remote_packet_size ();
8954 /* Except for querying the minimum buffer size, target must be open. */
8955 if (!rs
->remote_desc
)
8956 error (_("remote query is only available after target open"));
8958 gdb_assert (annex
!= NULL
);
8959 gdb_assert (readbuf
!= NULL
);
8965 /* We used one buffer char for the remote protocol q command and
8966 another for the query type. As the remote protocol encapsulation
8967 uses 4 chars plus one extra in case we are debugging
8968 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8971 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8973 /* Bad caller may have sent forbidden characters. */
8974 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8979 gdb_assert (annex
[i
] == '\0');
8981 i
= putpkt (rs
->buf
);
8985 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8986 strcpy ((char *) readbuf
, rs
->buf
);
8988 return strlen ((char *) readbuf
);
8992 remote_search_memory (struct target_ops
* ops
,
8993 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8994 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8995 CORE_ADDR
*found_addrp
)
8997 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8998 struct remote_state
*rs
= get_remote_state ();
8999 int max_size
= get_memory_write_packet_size ();
9000 struct packet_config
*packet
=
9001 &remote_protocol_packets
[PACKET_qSearch_memory
];
9002 /* Number of packet bytes used to encode the pattern;
9003 this could be more than PATTERN_LEN due to escape characters. */
9004 int escaped_pattern_len
;
9005 /* Amount of pattern that was encodable in the packet. */
9006 int used_pattern_len
;
9009 ULONGEST found_addr
;
9011 /* Don't go to the target if we don't have to.
9012 This is done before checking packet->support to avoid the possibility that
9013 a success for this edge case means the facility works in general. */
9014 if (pattern_len
> search_space_len
)
9016 if (pattern_len
== 0)
9018 *found_addrp
= start_addr
;
9022 /* If we already know the packet isn't supported, fall back to the simple
9023 way of searching memory. */
9025 if (packet
->support
== PACKET_DISABLE
)
9027 /* Target doesn't provided special support, fall back and use the
9028 standard support (copy memory and do the search here). */
9029 return simple_search_memory (ops
, start_addr
, search_space_len
,
9030 pattern
, pattern_len
, found_addrp
);
9033 /* Make sure the remote is pointing at the right process. */
9034 set_general_process ();
9036 /* Insert header. */
9037 i
= snprintf (rs
->buf
, max_size
,
9038 "qSearch:memory:%s;%s;",
9039 phex_nz (start_addr
, addr_size
),
9040 phex_nz (search_space_len
, sizeof (search_space_len
)));
9041 max_size
-= (i
+ 1);
9043 /* Escape as much data as fits into rs->buf. */
9044 escaped_pattern_len
=
9045 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9046 &used_pattern_len
, max_size
);
9048 /* Bail if the pattern is too large. */
9049 if (used_pattern_len
!= pattern_len
)
9050 error (_("Pattern is too large to transmit to remote target."));
9052 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9053 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9054 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9056 /* The request may not have worked because the command is not
9057 supported. If so, fall back to the simple way. */
9058 if (packet
->support
== PACKET_DISABLE
)
9060 return simple_search_memory (ops
, start_addr
, search_space_len
,
9061 pattern
, pattern_len
, found_addrp
);
9066 if (rs
->buf
[0] == '0')
9068 else if (rs
->buf
[0] == '1')
9071 if (rs
->buf
[1] != ',')
9072 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9073 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9074 *found_addrp
= found_addr
;
9077 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9083 remote_rcmd (char *command
,
9084 struct ui_file
*outbuf
)
9086 struct remote_state
*rs
= get_remote_state ();
9089 if (!rs
->remote_desc
)
9090 error (_("remote rcmd is only available after target open"));
9092 /* Send a NULL command across as an empty command. */
9093 if (command
== NULL
)
9096 /* The query prefix. */
9097 strcpy (rs
->buf
, "qRcmd,");
9098 p
= strchr (rs
->buf
, '\0');
9100 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9101 > get_remote_packet_size ())
9102 error (_("\"monitor\" command ``%s'' is too long."), command
);
9104 /* Encode the actual command. */
9105 bin2hex ((gdb_byte
*) command
, p
, 0);
9107 if (putpkt (rs
->buf
) < 0)
9108 error (_("Communication problem with target."));
9110 /* get/display the response */
9115 /* XXX - see also remote_get_noisy_reply(). */
9116 QUIT
; /* Allow user to bail out with ^C. */
9118 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9120 /* Timeout. Continue to (try to) read responses.
9121 This is better than stopping with an error, assuming the stub
9122 is still executing the (long) monitor command.
9123 If needed, the user can interrupt gdb using C-c, obtaining
9124 an effect similar to stop on timeout. */
9129 error (_("Target does not support this command."));
9130 if (buf
[0] == 'O' && buf
[1] != 'K')
9132 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9135 if (strcmp (buf
, "OK") == 0)
9137 if (strlen (buf
) == 3 && buf
[0] == 'E'
9138 && isdigit (buf
[1]) && isdigit (buf
[2]))
9140 error (_("Protocol error with Rcmd"));
9142 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9144 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9146 fputc_unfiltered (c
, outbuf
);
9152 static VEC(mem_region_s
) *
9153 remote_memory_map (struct target_ops
*ops
)
9155 VEC(mem_region_s
) *result
= NULL
;
9156 char *text
= target_read_stralloc (¤t_target
,
9157 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9161 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9163 result
= parse_memory_map (text
);
9164 do_cleanups (back_to
);
9171 packet_command (char *args
, int from_tty
)
9173 struct remote_state
*rs
= get_remote_state ();
9175 if (!rs
->remote_desc
)
9176 error (_("command can only be used with remote target"));
9179 error (_("remote-packet command requires packet text as argument"));
9181 puts_filtered ("sending: ");
9182 print_packet (args
);
9183 puts_filtered ("\n");
9186 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9187 puts_filtered ("received: ");
9188 print_packet (rs
->buf
);
9189 puts_filtered ("\n");
9193 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9195 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9197 static void threadset_test_cmd (char *cmd
, int tty
);
9199 static void threadalive_test (char *cmd
, int tty
);
9201 static void threadlist_test_cmd (char *cmd
, int tty
);
9203 int get_and_display_threadinfo (threadref
*ref
);
9205 static void threadinfo_test_cmd (char *cmd
, int tty
);
9207 static int thread_display_step (threadref
*ref
, void *context
);
9209 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9211 static void init_remote_threadtests (void);
9213 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9216 threadset_test_cmd (char *cmd
, int tty
)
9218 int sample_thread
= SAMPLE_THREAD
;
9220 printf_filtered (_("Remote threadset test\n"));
9221 set_general_thread (sample_thread
);
9226 threadalive_test (char *cmd
, int tty
)
9228 int sample_thread
= SAMPLE_THREAD
;
9229 int pid
= ptid_get_pid (inferior_ptid
);
9230 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9232 if (remote_thread_alive (ptid
))
9233 printf_filtered ("PASS: Thread alive test\n");
9235 printf_filtered ("FAIL: Thread alive test\n");
9238 void output_threadid (char *title
, threadref
*ref
);
9241 output_threadid (char *title
, threadref
*ref
)
9245 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9247 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9251 threadlist_test_cmd (char *cmd
, int tty
)
9254 threadref nextthread
;
9255 int done
, result_count
;
9256 threadref threadlist
[3];
9258 printf_filtered ("Remote Threadlist test\n");
9259 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9260 &result_count
, &threadlist
[0]))
9261 printf_filtered ("FAIL: threadlist test\n");
9264 threadref
*scan
= threadlist
;
9265 threadref
*limit
= scan
+ result_count
;
9267 while (scan
< limit
)
9268 output_threadid (" thread ", scan
++);
9273 display_thread_info (struct gdb_ext_thread_info
*info
)
9275 output_threadid ("Threadid: ", &info
->threadid
);
9276 printf_filtered ("Name: %s\n ", info
->shortname
);
9277 printf_filtered ("State: %s\n", info
->display
);
9278 printf_filtered ("other: %s\n\n", info
->more_display
);
9282 get_and_display_threadinfo (threadref
*ref
)
9286 struct gdb_ext_thread_info threadinfo
;
9288 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9289 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9290 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9291 display_thread_info (&threadinfo
);
9296 threadinfo_test_cmd (char *cmd
, int tty
)
9298 int athread
= SAMPLE_THREAD
;
9302 int_to_threadref (&thread
, athread
);
9303 printf_filtered ("Remote Threadinfo test\n");
9304 if (!get_and_display_threadinfo (&thread
))
9305 printf_filtered ("FAIL cannot get thread info\n");
9309 thread_display_step (threadref
*ref
, void *context
)
9311 /* output_threadid(" threadstep ",ref); *//* simple test */
9312 return get_and_display_threadinfo (ref
);
9316 threadlist_update_test_cmd (char *cmd
, int tty
)
9318 printf_filtered ("Remote Threadlist update test\n");
9319 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9323 init_remote_threadtests (void)
9325 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9326 _("Fetch and print the remote list of "
9327 "thread identifiers, one pkt only"));
9328 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9329 _("Fetch and display info about one thread"));
9330 add_com ("tset", class_obscure
, threadset_test_cmd
,
9331 _("Test setting to a different thread"));
9332 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9333 _("Iterate through updating all remote thread info"));
9334 add_com ("talive", class_obscure
, threadalive_test
,
9335 _(" Remote thread alive test "));
9340 /* Convert a thread ID to a string. Returns the string in a static
9344 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9346 static char buf
[64];
9347 struct remote_state
*rs
= get_remote_state ();
9349 if (ptid_equal (ptid
, null_ptid
))
9350 return normal_pid_to_str (ptid
);
9351 else if (ptid_is_pid (ptid
))
9353 /* Printing an inferior target id. */
9355 /* When multi-process extensions are off, there's no way in the
9356 remote protocol to know the remote process id, if there's any
9357 at all. There's one exception --- when we're connected with
9358 target extended-remote, and we manually attached to a process
9359 with "attach PID". We don't record anywhere a flag that
9360 allows us to distinguish that case from the case of
9361 connecting with extended-remote and the stub already being
9362 attached to a process, and reporting yes to qAttached, hence
9363 no smart special casing here. */
9364 if (!remote_multi_process_p (rs
))
9366 xsnprintf (buf
, sizeof buf
, "Remote target");
9370 return normal_pid_to_str (ptid
);
9374 if (ptid_equal (magic_null_ptid
, ptid
))
9375 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9376 else if (rs
->extended
&& remote_multi_process_p (rs
))
9377 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9378 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9380 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9381 ptid_get_tid (ptid
));
9386 /* Get the address of the thread local variable in OBJFILE which is
9387 stored at OFFSET within the thread local storage for thread PTID. */
9390 remote_get_thread_local_address (struct target_ops
*ops
,
9391 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9393 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9395 struct remote_state
*rs
= get_remote_state ();
9397 char *endp
= rs
->buf
+ get_remote_packet_size ();
9398 enum packet_result result
;
9400 strcpy (p
, "qGetTLSAddr:");
9402 p
= write_ptid (p
, endp
, ptid
);
9404 p
+= hexnumstr (p
, offset
);
9406 p
+= hexnumstr (p
, lm
);
9410 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9411 result
= packet_ok (rs
->buf
,
9412 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9413 if (result
== PACKET_OK
)
9417 unpack_varlen_hex (rs
->buf
, &result
);
9420 else if (result
== PACKET_UNKNOWN
)
9421 throw_error (TLS_GENERIC_ERROR
,
9422 _("Remote target doesn't support qGetTLSAddr packet"));
9424 throw_error (TLS_GENERIC_ERROR
,
9425 _("Remote target failed to process qGetTLSAddr request"));
9428 throw_error (TLS_GENERIC_ERROR
,
9429 _("TLS not supported or disabled on this target"));
9434 /* Provide thread local base, i.e. Thread Information Block address.
9435 Returns 1 if ptid is found and thread_local_base is non zero. */
9438 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9440 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9442 struct remote_state
*rs
= get_remote_state ();
9444 char *endp
= rs
->buf
+ get_remote_packet_size ();
9445 enum packet_result result
;
9447 strcpy (p
, "qGetTIBAddr:");
9449 p
= write_ptid (p
, endp
, ptid
);
9453 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9454 result
= packet_ok (rs
->buf
,
9455 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9456 if (result
== PACKET_OK
)
9460 unpack_varlen_hex (rs
->buf
, &result
);
9462 *addr
= (CORE_ADDR
) result
;
9465 else if (result
== PACKET_UNKNOWN
)
9466 error (_("Remote target doesn't support qGetTIBAddr packet"));
9468 error (_("Remote target failed to process qGetTIBAddr request"));
9471 error (_("qGetTIBAddr not supported or disabled on this target"));
9476 /* Support for inferring a target description based on the current
9477 architecture and the size of a 'g' packet. While the 'g' packet
9478 can have any size (since optional registers can be left off the
9479 end), some sizes are easily recognizable given knowledge of the
9480 approximate architecture. */
9482 struct remote_g_packet_guess
9485 const struct target_desc
*tdesc
;
9487 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9488 DEF_VEC_O(remote_g_packet_guess_s
);
9490 struct remote_g_packet_data
9492 VEC(remote_g_packet_guess_s
) *guesses
;
9495 static struct gdbarch_data
*remote_g_packet_data_handle
;
9498 remote_g_packet_data_init (struct obstack
*obstack
)
9500 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9504 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9505 const struct target_desc
*tdesc
)
9507 struct remote_g_packet_data
*data
9508 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9509 struct remote_g_packet_guess new_guess
, *guess
;
9512 gdb_assert (tdesc
!= NULL
);
9515 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9517 if (guess
->bytes
== bytes
)
9518 internal_error (__FILE__
, __LINE__
,
9519 _("Duplicate g packet description added for size %d"),
9522 new_guess
.bytes
= bytes
;
9523 new_guess
.tdesc
= tdesc
;
9524 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9527 /* Return 1 if remote_read_description would do anything on this target
9528 and architecture, 0 otherwise. */
9531 remote_read_description_p (struct target_ops
*target
)
9533 struct remote_g_packet_data
*data
9534 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9536 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9542 static const struct target_desc
*
9543 remote_read_description (struct target_ops
*target
)
9545 struct remote_g_packet_data
*data
9546 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9548 /* Do not try this during initial connection, when we do not know
9549 whether there is a running but stopped thread. */
9550 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9553 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9555 struct remote_g_packet_guess
*guess
;
9557 int bytes
= send_g_packet ();
9560 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9562 if (guess
->bytes
== bytes
)
9563 return guess
->tdesc
;
9565 /* We discard the g packet. A minor optimization would be to
9566 hold on to it, and fill the register cache once we have selected
9567 an architecture, but it's too tricky to do safely. */
9573 /* Remote file transfer support. This is host-initiated I/O, not
9574 target-initiated; for target-initiated, see remote-fileio.c. */
9576 /* If *LEFT is at least the length of STRING, copy STRING to
9577 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9578 decrease *LEFT. Otherwise raise an error. */
9581 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9583 int len
= strlen (string
);
9586 error (_("Packet too long for target."));
9588 memcpy (*buffer
, string
, len
);
9592 /* NUL-terminate the buffer as a convenience, if there is
9598 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9599 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9600 decrease *LEFT. Otherwise raise an error. */
9603 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9606 if (2 * len
> *left
)
9607 error (_("Packet too long for target."));
9609 bin2hex (bytes
, *buffer
, len
);
9613 /* NUL-terminate the buffer as a convenience, if there is
9619 /* If *LEFT is large enough, convert VALUE to hex and add it to
9620 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9621 decrease *LEFT. Otherwise raise an error. */
9624 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9626 int len
= hexnumlen (value
);
9629 error (_("Packet too long for target."));
9631 hexnumstr (*buffer
, value
);
9635 /* NUL-terminate the buffer as a convenience, if there is
9641 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9642 value, *REMOTE_ERRNO to the remote error number or zero if none
9643 was included, and *ATTACHMENT to point to the start of the annex
9644 if any. The length of the packet isn't needed here; there may
9645 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9647 Return 0 if the packet could be parsed, -1 if it could not. If
9648 -1 is returned, the other variables may not be initialized. */
9651 remote_hostio_parse_result (char *buffer
, int *retcode
,
9652 int *remote_errno
, char **attachment
)
9659 if (buffer
[0] != 'F')
9663 *retcode
= strtol (&buffer
[1], &p
, 16);
9664 if (errno
!= 0 || p
== &buffer
[1])
9667 /* Check for ",errno". */
9671 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9672 if (errno
!= 0 || p
+ 1 == p2
)
9677 /* Check for ";attachment". If there is no attachment, the
9678 packet should end here. */
9681 *attachment
= p
+ 1;
9684 else if (*p
== '\0')
9690 /* Send a prepared I/O packet to the target and read its response.
9691 The prepared packet is in the global RS->BUF before this function
9692 is called, and the answer is there when we return.
9694 COMMAND_BYTES is the length of the request to send, which may include
9695 binary data. WHICH_PACKET is the packet configuration to check
9696 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9697 is set to the error number and -1 is returned. Otherwise the value
9698 returned by the function is returned.
9700 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9701 attachment is expected; an error will be reported if there's a
9702 mismatch. If one is found, *ATTACHMENT will be set to point into
9703 the packet buffer and *ATTACHMENT_LEN will be set to the
9704 attachment's length. */
9707 remote_hostio_send_command (int command_bytes
, int which_packet
,
9708 int *remote_errno
, char **attachment
,
9709 int *attachment_len
)
9711 struct remote_state
*rs
= get_remote_state ();
9712 int ret
, bytes_read
;
9713 char *attachment_tmp
;
9715 if (!rs
->remote_desc
9716 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9718 *remote_errno
= FILEIO_ENOSYS
;
9722 putpkt_binary (rs
->buf
, command_bytes
);
9723 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9725 /* If it timed out, something is wrong. Don't try to parse the
9729 *remote_errno
= FILEIO_EINVAL
;
9733 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9736 *remote_errno
= FILEIO_EINVAL
;
9738 case PACKET_UNKNOWN
:
9739 *remote_errno
= FILEIO_ENOSYS
;
9745 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9748 *remote_errno
= FILEIO_EINVAL
;
9752 /* Make sure we saw an attachment if and only if we expected one. */
9753 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9754 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9756 *remote_errno
= FILEIO_EINVAL
;
9760 /* If an attachment was found, it must point into the packet buffer;
9761 work out how many bytes there were. */
9762 if (attachment_tmp
!= NULL
)
9764 *attachment
= attachment_tmp
;
9765 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9771 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9772 remote file descriptor, or -1 if an error occurs (and set
9776 remote_hostio_open (const char *filename
, int flags
, int mode
,
9779 struct remote_state
*rs
= get_remote_state ();
9781 int left
= get_remote_packet_size () - 1;
9783 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9785 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9787 remote_buffer_add_string (&p
, &left
, ",");
9789 remote_buffer_add_int (&p
, &left
, flags
);
9790 remote_buffer_add_string (&p
, &left
, ",");
9792 remote_buffer_add_int (&p
, &left
, mode
);
9794 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9795 remote_errno
, NULL
, NULL
);
9798 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9799 Return the number of bytes written, or -1 if an error occurs (and
9800 set *REMOTE_ERRNO). */
9803 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9804 ULONGEST offset
, int *remote_errno
)
9806 struct remote_state
*rs
= get_remote_state ();
9808 int left
= get_remote_packet_size ();
9811 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9813 remote_buffer_add_int (&p
, &left
, fd
);
9814 remote_buffer_add_string (&p
, &left
, ",");
9816 remote_buffer_add_int (&p
, &left
, offset
);
9817 remote_buffer_add_string (&p
, &left
, ",");
9819 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9820 get_remote_packet_size () - (p
- rs
->buf
));
9822 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9823 remote_errno
, NULL
, NULL
);
9826 /* Read up to LEN bytes FD on the remote target into READ_BUF
9827 Return the number of bytes read, or -1 if an error occurs (and
9828 set *REMOTE_ERRNO). */
9831 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9832 ULONGEST offset
, int *remote_errno
)
9834 struct remote_state
*rs
= get_remote_state ();
9837 int left
= get_remote_packet_size ();
9838 int ret
, attachment_len
;
9841 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9843 remote_buffer_add_int (&p
, &left
, fd
);
9844 remote_buffer_add_string (&p
, &left
, ",");
9846 remote_buffer_add_int (&p
, &left
, len
);
9847 remote_buffer_add_string (&p
, &left
, ",");
9849 remote_buffer_add_int (&p
, &left
, offset
);
9851 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9852 remote_errno
, &attachment
,
9858 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9860 if (read_len
!= ret
)
9861 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9866 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9867 (and set *REMOTE_ERRNO). */
9870 remote_hostio_close (int fd
, int *remote_errno
)
9872 struct remote_state
*rs
= get_remote_state ();
9874 int left
= get_remote_packet_size () - 1;
9876 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9878 remote_buffer_add_int (&p
, &left
, fd
);
9880 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9881 remote_errno
, NULL
, NULL
);
9884 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9885 occurs (and set *REMOTE_ERRNO). */
9888 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9890 struct remote_state
*rs
= get_remote_state ();
9892 int left
= get_remote_packet_size () - 1;
9894 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9896 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9899 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9900 remote_errno
, NULL
, NULL
);
9903 /* Read value of symbolic link FILENAME on the remote target. Return
9904 a null-terminated string allocated via xmalloc, or NULL if an error
9905 occurs (and set *REMOTE_ERRNO). */
9908 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9910 struct remote_state
*rs
= get_remote_state ();
9913 int left
= get_remote_packet_size ();
9914 int len
, attachment_len
;
9918 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9920 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9923 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9924 remote_errno
, &attachment
,
9930 ret
= xmalloc (len
+ 1);
9932 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9933 (gdb_byte
*) ret
, len
);
9934 if (read_len
!= len
)
9935 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9942 remote_fileio_errno_to_host (int errnum
)
9966 case FILEIO_ENOTDIR
:
9986 case FILEIO_ENAMETOOLONG
:
9987 return ENAMETOOLONG
;
9993 remote_hostio_error (int errnum
)
9995 int host_error
= remote_fileio_errno_to_host (errnum
);
9997 if (host_error
== -1)
9998 error (_("Unknown remote I/O error %d"), errnum
);
10000 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10004 remote_hostio_close_cleanup (void *opaque
)
10006 int fd
= *(int *) opaque
;
10009 remote_hostio_close (fd
, &remote_errno
);
10014 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10016 const char *filename
= bfd_get_filename (abfd
);
10017 int fd
, remote_errno
;
10020 gdb_assert (remote_filename_p (filename
));
10022 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10025 errno
= remote_fileio_errno_to_host (remote_errno
);
10026 bfd_set_error (bfd_error_system_call
);
10030 stream
= xmalloc (sizeof (int));
10036 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10038 int fd
= *(int *)stream
;
10043 /* Ignore errors on close; these may happen if the remote
10044 connection was already torn down. */
10045 remote_hostio_close (fd
, &remote_errno
);
10047 /* Zero means success. */
10052 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10053 file_ptr nbytes
, file_ptr offset
)
10055 int fd
= *(int *)stream
;
10057 file_ptr pos
, bytes
;
10060 while (nbytes
> pos
)
10062 bytes
= remote_hostio_pread (fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10063 offset
+ pos
, &remote_errno
);
10065 /* Success, but no bytes, means end-of-file. */
10069 errno
= remote_fileio_errno_to_host (remote_errno
);
10070 bfd_set_error (bfd_error_system_call
);
10081 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10083 /* FIXME: We should probably implement remote_hostio_stat. */
10084 sb
->st_size
= INT_MAX
;
10089 remote_filename_p (const char *filename
)
10091 return strncmp (filename
, "remote:", 7) == 0;
10095 remote_bfd_open (const char *remote_file
, const char *target
)
10097 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10098 remote_bfd_iovec_open
, NULL
,
10099 remote_bfd_iovec_pread
,
10100 remote_bfd_iovec_close
,
10101 remote_bfd_iovec_stat
);
10107 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10109 struct cleanup
*back_to
, *close_cleanup
;
10110 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10113 int bytes_in_buffer
;
10116 struct remote_state
*rs
= get_remote_state ();
10118 if (!rs
->remote_desc
)
10119 error (_("command can only be used with remote target"));
10121 file
= gdb_fopen_cloexec (local_file
, "rb");
10123 perror_with_name (local_file
);
10124 back_to
= make_cleanup_fclose (file
);
10126 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10128 0700, &remote_errno
);
10130 remote_hostio_error (remote_errno
);
10132 /* Send up to this many bytes at once. They won't all fit in the
10133 remote packet limit, so we'll transfer slightly fewer. */
10134 io_size
= get_remote_packet_size ();
10135 buffer
= xmalloc (io_size
);
10136 make_cleanup (xfree
, buffer
);
10138 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10140 bytes_in_buffer
= 0;
10143 while (bytes_in_buffer
|| !saw_eof
)
10147 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10148 io_size
- bytes_in_buffer
,
10153 error (_("Error reading %s."), local_file
);
10156 /* EOF. Unless there is something still in the
10157 buffer from the last iteration, we are done. */
10159 if (bytes_in_buffer
== 0)
10167 bytes
+= bytes_in_buffer
;
10168 bytes_in_buffer
= 0;
10170 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10171 offset
, &remote_errno
);
10174 remote_hostio_error (remote_errno
);
10175 else if (retcode
== 0)
10176 error (_("Remote write of %d bytes returned 0!"), bytes
);
10177 else if (retcode
< bytes
)
10179 /* Short write. Save the rest of the read data for the next
10181 bytes_in_buffer
= bytes
- retcode
;
10182 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10188 discard_cleanups (close_cleanup
);
10189 if (remote_hostio_close (fd
, &remote_errno
))
10190 remote_hostio_error (remote_errno
);
10193 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10194 do_cleanups (back_to
);
10198 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10200 struct cleanup
*back_to
, *close_cleanup
;
10201 int fd
, remote_errno
, bytes
, io_size
;
10205 struct remote_state
*rs
= get_remote_state ();
10207 if (!rs
->remote_desc
)
10208 error (_("command can only be used with remote target"));
10210 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10212 remote_hostio_error (remote_errno
);
10214 file
= gdb_fopen_cloexec (local_file
, "wb");
10216 perror_with_name (local_file
);
10217 back_to
= make_cleanup_fclose (file
);
10219 /* Send up to this many bytes at once. They won't all fit in the
10220 remote packet limit, so we'll transfer slightly fewer. */
10221 io_size
= get_remote_packet_size ();
10222 buffer
= xmalloc (io_size
);
10223 make_cleanup (xfree
, buffer
);
10225 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10230 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10232 /* Success, but no bytes, means end-of-file. */
10235 remote_hostio_error (remote_errno
);
10239 bytes
= fwrite (buffer
, 1, bytes
, file
);
10241 perror_with_name (local_file
);
10244 discard_cleanups (close_cleanup
);
10245 if (remote_hostio_close (fd
, &remote_errno
))
10246 remote_hostio_error (remote_errno
);
10249 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10250 do_cleanups (back_to
);
10254 remote_file_delete (const char *remote_file
, int from_tty
)
10256 int retcode
, remote_errno
;
10257 struct remote_state
*rs
= get_remote_state ();
10259 if (!rs
->remote_desc
)
10260 error (_("command can only be used with remote target"));
10262 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10264 remote_hostio_error (remote_errno
);
10267 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10271 remote_put_command (char *args
, int from_tty
)
10273 struct cleanup
*back_to
;
10277 error_no_arg (_("file to put"));
10279 argv
= gdb_buildargv (args
);
10280 back_to
= make_cleanup_freeargv (argv
);
10281 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10282 error (_("Invalid parameters to remote put"));
10284 remote_file_put (argv
[0], argv
[1], from_tty
);
10286 do_cleanups (back_to
);
10290 remote_get_command (char *args
, int from_tty
)
10292 struct cleanup
*back_to
;
10296 error_no_arg (_("file to get"));
10298 argv
= gdb_buildargv (args
);
10299 back_to
= make_cleanup_freeargv (argv
);
10300 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10301 error (_("Invalid parameters to remote get"));
10303 remote_file_get (argv
[0], argv
[1], from_tty
);
10305 do_cleanups (back_to
);
10309 remote_delete_command (char *args
, int from_tty
)
10311 struct cleanup
*back_to
;
10315 error_no_arg (_("file to delete"));
10317 argv
= gdb_buildargv (args
);
10318 back_to
= make_cleanup_freeargv (argv
);
10319 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10320 error (_("Invalid parameters to remote delete"));
10322 remote_file_delete (argv
[0], from_tty
);
10324 do_cleanups (back_to
);
10328 remote_command (char *args
, int from_tty
)
10330 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10334 remote_can_execute_reverse (void)
10336 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10337 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10344 remote_supports_non_stop (void)
10350 remote_supports_disable_randomization (void)
10352 /* Only supported in extended mode. */
10357 remote_supports_multi_process (void)
10359 struct remote_state
*rs
= get_remote_state ();
10361 /* Only extended-remote handles being attached to multiple
10362 processes, even though plain remote can use the multi-process
10363 thread id extensions, so that GDB knows the target process's
10365 return rs
->extended
&& remote_multi_process_p (rs
);
10369 remote_supports_cond_tracepoints (void)
10371 struct remote_state
*rs
= get_remote_state ();
10373 return rs
->cond_tracepoints
;
10377 remote_supports_cond_breakpoints (void)
10379 struct remote_state
*rs
= get_remote_state ();
10381 return rs
->cond_breakpoints
;
10385 remote_supports_fast_tracepoints (void)
10387 struct remote_state
*rs
= get_remote_state ();
10389 return rs
->fast_tracepoints
;
10393 remote_supports_static_tracepoints (void)
10395 struct remote_state
*rs
= get_remote_state ();
10397 return rs
->static_tracepoints
;
10401 remote_supports_install_in_trace (void)
10403 struct remote_state
*rs
= get_remote_state ();
10405 return rs
->install_in_trace
;
10409 remote_supports_enable_disable_tracepoint (void)
10411 struct remote_state
*rs
= get_remote_state ();
10413 return rs
->enable_disable_tracepoints
;
10417 remote_supports_string_tracing (void)
10419 struct remote_state
*rs
= get_remote_state ();
10421 return rs
->string_tracing
;
10425 remote_can_run_breakpoint_commands (void)
10427 struct remote_state
*rs
= get_remote_state ();
10429 return rs
->breakpoint_commands
;
10433 remote_trace_init (void)
10436 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10437 if (strcmp (target_buf
, "OK") != 0)
10438 error (_("Target does not support this command."));
10441 static void free_actions_list (char **actions_list
);
10442 static void free_actions_list_cleanup_wrapper (void *);
10444 free_actions_list_cleanup_wrapper (void *al
)
10446 free_actions_list (al
);
10450 free_actions_list (char **actions_list
)
10454 if (actions_list
== 0)
10457 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10458 xfree (actions_list
[ndx
]);
10460 xfree (actions_list
);
10463 /* Recursive routine to walk through command list including loops, and
10464 download packets for each command. */
10467 remote_download_command_source (int num
, ULONGEST addr
,
10468 struct command_line
*cmds
)
10470 struct remote_state
*rs
= get_remote_state ();
10471 struct command_line
*cmd
;
10473 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10475 QUIT
; /* Allow user to bail out with ^C. */
10476 strcpy (rs
->buf
, "QTDPsrc:");
10477 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10478 rs
->buf
+ strlen (rs
->buf
),
10479 rs
->buf_size
- strlen (rs
->buf
));
10481 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10482 if (strcmp (target_buf
, "OK"))
10483 warning (_("Target does not support source download."));
10485 if (cmd
->control_type
== while_control
10486 || cmd
->control_type
== while_stepping_control
)
10488 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10490 QUIT
; /* Allow user to bail out with ^C. */
10491 strcpy (rs
->buf
, "QTDPsrc:");
10492 encode_source_string (num
, addr
, "cmd", "end",
10493 rs
->buf
+ strlen (rs
->buf
),
10494 rs
->buf_size
- strlen (rs
->buf
));
10496 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10497 if (strcmp (target_buf
, "OK"))
10498 warning (_("Target does not support source download."));
10504 remote_download_tracepoint (struct bp_location
*loc
)
10506 #define BUF_SIZE 2048
10510 char buf
[BUF_SIZE
];
10511 char **tdp_actions
;
10512 char **stepping_actions
;
10514 struct cleanup
*old_chain
= NULL
;
10515 struct agent_expr
*aexpr
;
10516 struct cleanup
*aexpr_chain
= NULL
;
10518 struct breakpoint
*b
= loc
->owner
;
10519 struct tracepoint
*t
= (struct tracepoint
*) b
;
10521 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10522 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10524 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10527 tpaddr
= loc
->address
;
10528 sprintf_vma (addrbuf
, tpaddr
);
10529 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10530 addrbuf
, /* address */
10531 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10532 t
->step_count
, t
->pass_count
);
10533 /* Fast tracepoints are mostly handled by the target, but we can
10534 tell the target how big of an instruction block should be moved
10536 if (b
->type
== bp_fast_tracepoint
)
10538 /* Only test for support at download time; we may not know
10539 target capabilities at definition time. */
10540 if (remote_supports_fast_tracepoints ())
10544 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10545 tpaddr
, &isize
, NULL
))
10546 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10549 /* If it passed validation at definition but fails now,
10550 something is very wrong. */
10551 internal_error (__FILE__
, __LINE__
,
10552 _("Fast tracepoint not "
10553 "valid during download"));
10556 /* Fast tracepoints are functionally identical to regular
10557 tracepoints, so don't take lack of support as a reason to
10558 give up on the trace run. */
10559 warning (_("Target does not support fast tracepoints, "
10560 "downloading %d as regular tracepoint"), b
->number
);
10562 else if (b
->type
== bp_static_tracepoint
)
10564 /* Only test for support at download time; we may not know
10565 target capabilities at definition time. */
10566 if (remote_supports_static_tracepoints ())
10568 struct static_tracepoint_marker marker
;
10570 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10571 strcat (buf
, ":S");
10573 error (_("Static tracepoint not valid during download"));
10576 /* Fast tracepoints are functionally identical to regular
10577 tracepoints, so don't take lack of support as a reason
10578 to give up on the trace run. */
10579 error (_("Target does not support static tracepoints"));
10581 /* If the tracepoint has a conditional, make it into an agent
10582 expression and append to the definition. */
10585 /* Only test support at download time, we may not know target
10586 capabilities at definition time. */
10587 if (remote_supports_cond_tracepoints ())
10589 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10590 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10591 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10593 pkt
= buf
+ strlen (buf
);
10594 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10595 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10597 do_cleanups (aexpr_chain
);
10600 warning (_("Target does not support conditional tracepoints, "
10601 "ignoring tp %d cond"), b
->number
);
10604 if (b
->commands
|| *default_collect
)
10607 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10608 if (strcmp (target_buf
, "OK"))
10609 error (_("Target does not support tracepoints."));
10611 /* do_single_steps (t); */
10614 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10616 QUIT
; /* Allow user to bail out with ^C. */
10617 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10618 b
->number
, addrbuf
, /* address */
10620 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10623 remote_get_noisy_reply (&target_buf
,
10625 if (strcmp (target_buf
, "OK"))
10626 error (_("Error on target while setting tracepoints."));
10629 if (stepping_actions
)
10631 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10633 QUIT
; /* Allow user to bail out with ^C. */
10634 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10635 b
->number
, addrbuf
, /* address */
10636 ((ndx
== 0) ? "S" : ""),
10637 stepping_actions
[ndx
],
10638 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10640 remote_get_noisy_reply (&target_buf
,
10642 if (strcmp (target_buf
, "OK"))
10643 error (_("Error on target while setting tracepoints."));
10647 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10650 if (b
->addr_string
)
10652 strcpy (buf
, "QTDPsrc:");
10653 encode_source_string (b
->number
, loc
->address
,
10654 "at", b
->addr_string
, buf
+ strlen (buf
),
10655 2048 - strlen (buf
));
10658 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10659 if (strcmp (target_buf
, "OK"))
10660 warning (_("Target does not support source download."));
10662 if (b
->cond_string
)
10664 strcpy (buf
, "QTDPsrc:");
10665 encode_source_string (b
->number
, loc
->address
,
10666 "cond", b
->cond_string
, buf
+ strlen (buf
),
10667 2048 - strlen (buf
));
10669 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10670 if (strcmp (target_buf
, "OK"))
10671 warning (_("Target does not support source download."));
10673 remote_download_command_source (b
->number
, loc
->address
,
10674 breakpoint_commands (b
));
10677 do_cleanups (old_chain
);
10681 remote_can_download_tracepoint (void)
10683 struct remote_state
*rs
= get_remote_state ();
10684 struct trace_status
*ts
;
10687 /* Don't try to install tracepoints until we've relocated our
10688 symbols, and fetched and merged the target's tracepoint list with
10690 if (rs
->starting_up
)
10693 ts
= current_trace_status ();
10694 status
= remote_get_trace_status (ts
);
10696 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10699 /* If we are in a tracing experiment, but remote stub doesn't support
10700 installing tracepoint in trace, we have to return. */
10701 if (!remote_supports_install_in_trace ())
10709 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10711 struct remote_state
*rs
= get_remote_state ();
10714 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10715 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10717 p
= rs
->buf
+ strlen (rs
->buf
);
10718 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10719 error (_("Trace state variable name too long for tsv definition packet"));
10720 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10723 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10724 if (*target_buf
== '\0')
10725 error (_("Target does not support this command."));
10726 if (strcmp (target_buf
, "OK") != 0)
10727 error (_("Error on target while downloading trace state variable."));
10731 remote_enable_tracepoint (struct bp_location
*location
)
10733 struct remote_state
*rs
= get_remote_state ();
10736 sprintf_vma (addr_buf
, location
->address
);
10737 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10738 location
->owner
->number
, addr_buf
);
10740 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10741 if (*rs
->buf
== '\0')
10742 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10743 if (strcmp (rs
->buf
, "OK") != 0)
10744 error (_("Error on target while enabling tracepoint."));
10748 remote_disable_tracepoint (struct bp_location
*location
)
10750 struct remote_state
*rs
= get_remote_state ();
10753 sprintf_vma (addr_buf
, location
->address
);
10754 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10755 location
->owner
->number
, addr_buf
);
10757 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10758 if (*rs
->buf
== '\0')
10759 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10760 if (strcmp (rs
->buf
, "OK") != 0)
10761 error (_("Error on target while disabling tracepoint."));
10765 remote_trace_set_readonly_regions (void)
10769 bfd_size_type size
;
10775 return; /* No information to give. */
10777 strcpy (target_buf
, "QTro");
10778 offset
= strlen (target_buf
);
10779 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10781 char tmp1
[40], tmp2
[40];
10784 if ((s
->flags
& SEC_LOAD
) == 0 ||
10785 /* (s->flags & SEC_CODE) == 0 || */
10786 (s
->flags
& SEC_READONLY
) == 0)
10790 vma
= bfd_get_section_vma (abfd
, s
);
10791 size
= bfd_get_section_size (s
);
10792 sprintf_vma (tmp1
, vma
);
10793 sprintf_vma (tmp2
, vma
+ size
);
10794 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10795 if (offset
+ sec_length
+ 1 > target_buf_size
)
10797 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10800 Too many sections for read-only sections definition packet."));
10803 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10805 offset
+= sec_length
;
10809 putpkt (target_buf
);
10810 getpkt (&target_buf
, &target_buf_size
, 0);
10815 remote_trace_start (void)
10817 putpkt ("QTStart");
10818 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10819 if (*target_buf
== '\0')
10820 error (_("Target does not support this command."));
10821 if (strcmp (target_buf
, "OK") != 0)
10822 error (_("Bogus reply from target: %s"), target_buf
);
10826 remote_get_trace_status (struct trace_status
*ts
)
10828 /* Initialize it just to avoid a GCC false warning. */
10830 /* FIXME we need to get register block size some other way. */
10831 extern int trace_regblock_size
;
10832 volatile struct gdb_exception ex
;
10833 enum packet_result result
;
10835 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10838 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10840 putpkt ("qTStatus");
10842 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10844 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10848 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10850 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10853 throw_exception (ex
);
10856 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10858 /* If the remote target doesn't do tracing, flag it. */
10859 if (result
== PACKET_UNKNOWN
)
10862 /* We're working with a live target. */
10863 ts
->filename
= NULL
;
10866 error (_("Bogus trace status reply from target: %s"), target_buf
);
10868 /* Function 'parse_trace_status' sets default value of each field of
10869 'ts' at first, so we don't have to do it here. */
10870 parse_trace_status (p
, ts
);
10872 return ts
->running
;
10876 remote_get_tracepoint_status (struct breakpoint
*bp
,
10877 struct uploaded_tp
*utp
)
10879 struct remote_state
*rs
= get_remote_state ();
10881 struct bp_location
*loc
;
10882 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10883 size_t size
= get_remote_packet_size ();
10887 tp
->base
.hit_count
= 0;
10888 tp
->traceframe_usage
= 0;
10889 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10891 /* If the tracepoint was never downloaded, don't go asking for
10893 if (tp
->number_on_target
== 0)
10895 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10896 phex_nz (loc
->address
, 0));
10898 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10899 if (reply
&& *reply
)
10902 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10908 utp
->hit_count
= 0;
10909 utp
->traceframe_usage
= 0;
10910 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10911 phex_nz (utp
->addr
, 0));
10913 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10914 if (reply
&& *reply
)
10917 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10923 remote_trace_stop (void)
10926 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10927 if (*target_buf
== '\0')
10928 error (_("Target does not support this command."));
10929 if (strcmp (target_buf
, "OK") != 0)
10930 error (_("Bogus reply from target: %s"), target_buf
);
10934 remote_trace_find (enum trace_find_type type
, int num
,
10935 CORE_ADDR addr1
, CORE_ADDR addr2
,
10938 struct remote_state
*rs
= get_remote_state ();
10939 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10941 int target_frameno
= -1, target_tracept
= -1;
10943 /* Lookups other than by absolute frame number depend on the current
10944 trace selected, so make sure it is correct on the remote end
10946 if (type
!= tfind_number
)
10947 set_remote_traceframe ();
10950 strcpy (p
, "QTFrame:");
10951 p
= strchr (p
, '\0');
10955 xsnprintf (p
, endbuf
- p
, "%x", num
);
10958 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10961 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10964 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10965 phex_nz (addr2
, 0));
10967 case tfind_outside
:
10968 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10969 phex_nz (addr2
, 0));
10972 error (_("Unknown trace find type %d"), type
);
10976 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10977 if (*reply
== '\0')
10978 error (_("Target does not support this command."));
10980 while (reply
&& *reply
)
10985 target_frameno
= (int) strtol (p
, &reply
, 16);
10987 error (_("Unable to parse trace frame number"));
10988 /* Don't update our remote traceframe number cache on failure
10989 to select a remote traceframe. */
10990 if (target_frameno
== -1)
10995 target_tracept
= (int) strtol (p
, &reply
, 16);
10997 error (_("Unable to parse tracepoint number"));
10999 case 'O': /* "OK"? */
11000 if (reply
[1] == 'K' && reply
[2] == '\0')
11003 error (_("Bogus reply from target: %s"), reply
);
11006 error (_("Bogus reply from target: %s"), reply
);
11009 *tpp
= target_tracept
;
11011 remote_traceframe_number
= target_frameno
;
11012 return target_frameno
;
11016 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
11018 struct remote_state
*rs
= get_remote_state ();
11022 set_remote_traceframe ();
11024 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11026 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11027 if (reply
&& *reply
)
11031 unpack_varlen_hex (reply
+ 1, &uval
);
11032 *val
= (LONGEST
) uval
;
11040 remote_save_trace_data (const char *filename
)
11042 struct remote_state
*rs
= get_remote_state ();
11046 strcpy (p
, "QTSave:");
11048 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11049 error (_("Remote file name too long for trace save packet"));
11050 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
11053 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11054 if (*reply
== '\0')
11055 error (_("Target does not support this command."));
11056 if (strcmp (reply
, "OK") != 0)
11057 error (_("Bogus reply from target: %s"), reply
);
11061 /* This is basically a memory transfer, but needs to be its own packet
11062 because we don't know how the target actually organizes its trace
11063 memory, plus we want to be able to ask for as much as possible, but
11064 not be unhappy if we don't get as much as we ask for. */
11067 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11069 struct remote_state
*rs
= get_remote_state ();
11075 strcpy (p
, "qTBuffer:");
11077 p
+= hexnumstr (p
, offset
);
11079 p
+= hexnumstr (p
, len
);
11083 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11084 if (reply
&& *reply
)
11086 /* 'l' by itself means we're at the end of the buffer and
11087 there is nothing more to get. */
11091 /* Convert the reply into binary. Limit the number of bytes to
11092 convert according to our passed-in buffer size, rather than
11093 what was returned in the packet; if the target is
11094 unexpectedly generous and gives us a bigger reply than we
11095 asked for, we don't want to crash. */
11096 rslt
= hex2bin (target_buf
, buf
, len
);
11100 /* Something went wrong, flag as an error. */
11105 remote_set_disconnected_tracing (int val
)
11107 struct remote_state
*rs
= get_remote_state ();
11109 if (rs
->disconnected_tracing
)
11113 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11115 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11116 if (*reply
== '\0')
11117 error (_("Target does not support this command."));
11118 if (strcmp (reply
, "OK") != 0)
11119 error (_("Bogus reply from target: %s"), reply
);
11122 warning (_("Target does not support disconnected tracing."));
11126 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11128 struct thread_info
*info
= find_thread_ptid (ptid
);
11130 if (info
&& info
->private)
11131 return info
->private->core
;
11136 remote_set_circular_trace_buffer (int val
)
11138 struct remote_state
*rs
= get_remote_state ();
11141 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11143 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11144 if (*reply
== '\0')
11145 error (_("Target does not support this command."));
11146 if (strcmp (reply
, "OK") != 0)
11147 error (_("Bogus reply from target: %s"), reply
);
11150 static struct traceframe_info
*
11151 remote_traceframe_info (void)
11155 text
= target_read_stralloc (¤t_target
,
11156 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11159 struct traceframe_info
*info
;
11160 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11162 info
= parse_traceframe_info (text
);
11163 do_cleanups (back_to
);
11170 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11171 instruction on which a fast tracepoint may be placed. Returns -1
11172 if the packet is not supported, and 0 if the minimum instruction
11173 length is unknown. */
11176 remote_get_min_fast_tracepoint_insn_len (void)
11178 struct remote_state
*rs
= get_remote_state ();
11181 /* If we're not debugging a process yet, the IPA can't be
11183 if (!target_has_execution
)
11186 /* Make sure the remote is pointing at the right process. */
11187 set_general_process ();
11189 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11191 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11192 if (*reply
== '\0')
11196 ULONGEST min_insn_len
;
11198 unpack_varlen_hex (reply
, &min_insn_len
);
11200 return (int) min_insn_len
;
11205 remote_set_trace_buffer_size (LONGEST val
)
11207 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11210 struct remote_state
*rs
= get_remote_state ();
11211 char *buf
= rs
->buf
;
11212 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11213 enum packet_result result
;
11215 gdb_assert (val
>= 0 || val
== -1);
11216 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11217 /* Send -1 as literal "-1" to avoid host size dependency. */
11221 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11224 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11227 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11228 result
= packet_ok (rs
->buf
,
11229 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11231 if (result
!= PACKET_OK
)
11232 warning (_("Bogus reply from target: %s"), rs
->buf
);
11237 remote_set_trace_notes (const char *user
, const char *notes
,
11238 const char *stop_notes
)
11240 struct remote_state
*rs
= get_remote_state ();
11242 char *buf
= rs
->buf
;
11243 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11246 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11249 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11250 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, 0);
11256 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11257 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, 0);
11263 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11264 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, 0);
11268 /* Ensure the buffer is terminated. */
11272 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11273 if (*reply
== '\0')
11276 if (strcmp (reply
, "OK") != 0)
11277 error (_("Bogus reply from target: %s"), reply
);
11283 remote_use_agent (int use
)
11285 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11287 struct remote_state
*rs
= get_remote_state ();
11289 /* If the stub supports QAgent. */
11290 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11292 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11294 if (strcmp (rs
->buf
, "OK") == 0)
11305 remote_can_use_agent (void)
11307 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11310 struct btrace_target_info
11312 /* The ptid of the traced thread. */
11316 /* Check whether the target supports branch tracing. */
11319 remote_supports_btrace (void)
11321 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11323 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11325 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11331 /* Enable branch tracing. */
11333 static struct btrace_target_info
*
11334 remote_enable_btrace (ptid_t ptid
)
11336 struct btrace_target_info
*tinfo
= NULL
;
11337 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11338 struct remote_state
*rs
= get_remote_state ();
11339 char *buf
= rs
->buf
;
11340 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11342 if (packet
->support
!= PACKET_ENABLE
)
11343 error (_("Target does not support branch tracing."));
11345 set_general_thread (ptid
);
11347 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11349 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11351 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11353 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11354 error (_("Could not enable branch tracing for %s: %s"),
11355 target_pid_to_str (ptid
), rs
->buf
+ 2);
11357 error (_("Could not enable branch tracing for %s."),
11358 target_pid_to_str (ptid
));
11361 tinfo
= xzalloc (sizeof (*tinfo
));
11362 tinfo
->ptid
= ptid
;
11367 /* Disable branch tracing. */
11370 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11372 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11373 struct remote_state
*rs
= get_remote_state ();
11374 char *buf
= rs
->buf
;
11375 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11377 if (packet
->support
!= PACKET_ENABLE
)
11378 error (_("Target does not support branch tracing."));
11380 set_general_thread (tinfo
->ptid
);
11382 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11384 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11386 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11388 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11389 error (_("Could not disable branch tracing for %s: %s"),
11390 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11392 error (_("Could not disable branch tracing for %s."),
11393 target_pid_to_str (tinfo
->ptid
));
11399 /* Teardown branch tracing. */
11402 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11404 /* We must not talk to the target during teardown. */
11408 /* Read the branch trace. */
11410 static VEC (btrace_block_s
) *
11411 remote_read_btrace (struct btrace_target_info
*tinfo
,
11412 enum btrace_read_type type
)
11414 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11415 struct remote_state
*rs
= get_remote_state ();
11416 VEC (btrace_block_s
) *btrace
= NULL
;
11420 if (packet
->support
!= PACKET_ENABLE
)
11421 error (_("Target does not support branch tracing."));
11423 #if !defined(HAVE_LIBEXPAT)
11424 error (_("Cannot process branch tracing result. XML parsing not supported."));
11429 case btrace_read_all
:
11432 case btrace_read_new
:
11436 internal_error (__FILE__
, __LINE__
,
11437 _("Bad branch tracing read type: %u."),
11438 (unsigned int) type
);
11441 xml
= target_read_stralloc (¤t_target
,
11442 TARGET_OBJECT_BTRACE
, annex
);
11445 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11447 btrace
= parse_xml_btrace (xml
);
11448 do_cleanups (cleanup
);
11455 remote_augmented_libraries_svr4_read (void)
11457 struct remote_state
*rs
= get_remote_state ();
11459 return rs
->augmented_libraries_svr4_read
;
11463 init_remote_ops (void)
11465 remote_ops
.to_shortname
= "remote";
11466 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11467 remote_ops
.to_doc
=
11468 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11469 Specify the serial device it is connected to\n\
11470 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11471 remote_ops
.to_open
= remote_open
;
11472 remote_ops
.to_close
= remote_close
;
11473 remote_ops
.to_detach
= remote_detach
;
11474 remote_ops
.to_disconnect
= remote_disconnect
;
11475 remote_ops
.to_resume
= remote_resume
;
11476 remote_ops
.to_wait
= remote_wait
;
11477 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11478 remote_ops
.to_store_registers
= remote_store_registers
;
11479 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11480 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11481 remote_ops
.to_files_info
= remote_files_info
;
11482 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11483 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11484 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11485 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11486 remote_ops
.to_watchpoint_addr_within_range
=
11487 remote_watchpoint_addr_within_range
;
11488 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11489 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11490 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11491 remote_ops
.to_region_ok_for_hw_watchpoint
11492 = remote_region_ok_for_hw_watchpoint
;
11493 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11494 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11495 remote_ops
.to_kill
= remote_kill
;
11496 remote_ops
.to_load
= generic_load
;
11497 remote_ops
.to_mourn_inferior
= remote_mourn
;
11498 remote_ops
.to_pass_signals
= remote_pass_signals
;
11499 remote_ops
.to_program_signals
= remote_program_signals
;
11500 remote_ops
.to_thread_alive
= remote_thread_alive
;
11501 remote_ops
.to_find_new_threads
= remote_threads_info
;
11502 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11503 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11504 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11505 remote_ops
.to_stop
= remote_stop
;
11506 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11507 remote_ops
.to_rcmd
= remote_rcmd
;
11508 remote_ops
.to_log_command
= serial_log_command
;
11509 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11510 remote_ops
.to_stratum
= process_stratum
;
11511 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11512 remote_ops
.to_has_memory
= default_child_has_memory
;
11513 remote_ops
.to_has_stack
= default_child_has_stack
;
11514 remote_ops
.to_has_registers
= default_child_has_registers
;
11515 remote_ops
.to_has_execution
= default_child_has_execution
;
11516 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11517 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11518 remote_ops
.to_magic
= OPS_MAGIC
;
11519 remote_ops
.to_memory_map
= remote_memory_map
;
11520 remote_ops
.to_flash_erase
= remote_flash_erase
;
11521 remote_ops
.to_flash_done
= remote_flash_done
;
11522 remote_ops
.to_read_description
= remote_read_description
;
11523 remote_ops
.to_search_memory
= remote_search_memory
;
11524 remote_ops
.to_can_async_p
= remote_can_async_p
;
11525 remote_ops
.to_is_async_p
= remote_is_async_p
;
11526 remote_ops
.to_async
= remote_async
;
11527 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11528 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11529 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11530 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11531 remote_ops
.to_supports_disable_randomization
11532 = remote_supports_disable_randomization
;
11533 remote_ops
.to_fileio_open
= remote_hostio_open
;
11534 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11535 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11536 remote_ops
.to_fileio_close
= remote_hostio_close
;
11537 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11538 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11539 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11540 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11541 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11542 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11543 remote_ops
.to_trace_init
= remote_trace_init
;
11544 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11545 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11546 remote_ops
.to_download_trace_state_variable
11547 = remote_download_trace_state_variable
;
11548 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11549 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11550 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11551 remote_ops
.to_trace_start
= remote_trace_start
;
11552 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11553 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11554 remote_ops
.to_trace_stop
= remote_trace_stop
;
11555 remote_ops
.to_trace_find
= remote_trace_find
;
11556 remote_ops
.to_get_trace_state_variable_value
11557 = remote_get_trace_state_variable_value
;
11558 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11559 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11560 remote_ops
.to_upload_trace_state_variables
11561 = remote_upload_trace_state_variables
;
11562 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11563 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11564 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11565 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11566 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11567 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11568 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11569 remote_ops
.to_verify_memory
= remote_verify_memory
;
11570 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11571 remote_ops
.to_set_permissions
= remote_set_permissions
;
11572 remote_ops
.to_static_tracepoint_marker_at
11573 = remote_static_tracepoint_marker_at
;
11574 remote_ops
.to_static_tracepoint_markers_by_strid
11575 = remote_static_tracepoint_markers_by_strid
;
11576 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11577 remote_ops
.to_use_agent
= remote_use_agent
;
11578 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11579 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11580 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11581 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11582 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11583 remote_ops
.to_read_btrace
= remote_read_btrace
;
11584 remote_ops
.to_augmented_libraries_svr4_read
=
11585 remote_augmented_libraries_svr4_read
;
11588 /* Set up the extended remote vector by making a copy of the standard
11589 remote vector and adding to it. */
11592 init_extended_remote_ops (void)
11594 extended_remote_ops
= remote_ops
;
11596 extended_remote_ops
.to_shortname
= "extended-remote";
11597 extended_remote_ops
.to_longname
=
11598 "Extended remote serial target in gdb-specific protocol";
11599 extended_remote_ops
.to_doc
=
11600 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11601 Specify the serial device it is connected to (e.g. /dev/ttya).";
11602 extended_remote_ops
.to_open
= extended_remote_open
;
11603 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11604 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11605 extended_remote_ops
.to_detach
= extended_remote_detach
;
11606 extended_remote_ops
.to_attach
= extended_remote_attach
;
11607 extended_remote_ops
.to_kill
= extended_remote_kill
;
11608 extended_remote_ops
.to_supports_disable_randomization
11609 = extended_remote_supports_disable_randomization
;
11613 remote_can_async_p (void)
11615 struct remote_state
*rs
= get_remote_state ();
11617 if (!target_async_permitted
)
11618 /* We only enable async when the user specifically asks for it. */
11621 /* We're async whenever the serial device is. */
11622 return serial_can_async_p (rs
->remote_desc
);
11626 remote_is_async_p (void)
11628 struct remote_state
*rs
= get_remote_state ();
11630 if (!target_async_permitted
)
11631 /* We only enable async when the user specifically asks for it. */
11634 /* We're async whenever the serial device is. */
11635 return serial_is_async_p (rs
->remote_desc
);
11638 /* Pass the SERIAL event on and up to the client. One day this code
11639 will be able to delay notifying the client of an event until the
11640 point where an entire packet has been received. */
11642 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11644 static void *async_client_context
;
11645 static serial_event_ftype remote_async_serial_handler
;
11648 remote_async_serial_handler (struct serial
*scb
, void *context
)
11650 /* Don't propogate error information up to the client. Instead let
11651 the client find out about the error by querying the target. */
11652 async_client_callback (INF_REG_EVENT
, async_client_context
);
11656 remote_async_inferior_event_handler (gdb_client_data data
)
11658 inferior_event_handler (INF_REG_EVENT
, NULL
);
11662 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11663 void *context
), void *context
)
11665 struct remote_state
*rs
= get_remote_state ();
11667 if (callback
!= NULL
)
11669 serial_async (rs
->remote_desc
, remote_async_serial_handler
, NULL
);
11670 async_client_callback
= callback
;
11671 async_client_context
= context
;
11674 serial_async (rs
->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 struct remote_state
*rs
= get_remote_state ();
11726 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11727 remote_check_symbols ();
11730 /* Pull all the tracepoints defined on the target and create local
11731 data structures representing them. We don't want to create real
11732 tracepoints yet, we don't want to mess up the user's existing
11736 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11738 struct remote_state
*rs
= get_remote_state ();
11741 /* Ask for a first packet of tracepoint definition. */
11743 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11745 while (*p
&& *p
!= 'l')
11747 parse_tracepoint_definition (p
, utpp
);
11748 /* Ask for another packet of tracepoint definition. */
11750 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11757 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11759 struct remote_state
*rs
= get_remote_state ();
11762 /* Ask for a first packet of variable definition. */
11764 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11766 while (*p
&& *p
!= 'l')
11768 parse_tsv_definition (p
, utsvp
);
11769 /* Ask for another packet of variable definition. */
11771 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11777 /* The "set/show range-stepping" show hook. */
11780 show_range_stepping (struct ui_file
*file
, int from_tty
,
11781 struct cmd_list_element
*c
,
11784 fprintf_filtered (file
,
11785 _("Debugger's willingness to use range stepping "
11786 "is %s.\n"), value
);
11789 /* The "set/show range-stepping" set hook. */
11792 set_range_stepping (char *ignore_args
, int from_tty
,
11793 struct cmd_list_element
*c
)
11795 struct remote_state
*rs
= get_remote_state ();
11797 /* Whene enabling, check whether range stepping is actually
11798 supported by the target, and warn if not. */
11799 if (use_range_stepping
)
11801 if (rs
->remote_desc
!= NULL
)
11803 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11804 remote_vcont_probe (rs
);
11806 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11807 && rs
->supports_vCont
.r
)
11811 warning (_("Range stepping is not supported by the current target"));
11816 _initialize_remote (void)
11818 struct remote_state
*rs
;
11819 struct cmd_list_element
*cmd
;
11820 const char *cmd_name
;
11822 /* architecture specific data */
11823 remote_gdbarch_data_handle
=
11824 gdbarch_data_register_post_init (init_remote_state
);
11825 remote_g_packet_data_handle
=
11826 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11828 /* Initialize the per-target state. At the moment there is only one
11829 of these, not one per target. Only one target is active at a
11831 remote_state
= new_remote_state ();
11833 init_remote_ops ();
11834 add_target (&remote_ops
);
11836 init_extended_remote_ops ();
11837 add_target (&extended_remote_ops
);
11839 /* Hook into new objfile notification. */
11840 observer_attach_new_objfile (remote_new_objfile
);
11841 /* We're no longer interested in notification events of an inferior
11843 observer_attach_inferior_exit (discard_pending_stop_replies
);
11845 /* Set up signal handlers. */
11846 async_sigint_remote_token
=
11847 create_async_signal_handler (async_remote_interrupt
, NULL
);
11848 async_sigint_remote_twice_token
=
11849 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11852 init_remote_threadtests ();
11855 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11856 /* set/show remote ... */
11858 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11859 Remote protocol specific variables\n\
11860 Configure various remote-protocol specific variables such as\n\
11861 the packets being used"),
11862 &remote_set_cmdlist
, "set remote ",
11863 0 /* allow-unknown */, &setlist
);
11864 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11865 Remote protocol specific variables\n\
11866 Configure various remote-protocol specific variables such as\n\
11867 the packets being used"),
11868 &remote_show_cmdlist
, "show remote ",
11869 0 /* allow-unknown */, &showlist
);
11871 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11872 Compare section data on target to the exec file.\n\
11873 Argument is a single section name (default: all loaded sections)."),
11876 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11877 Send an arbitrary packet to a remote target.\n\
11878 maintenance packet TEXT\n\
11879 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11880 this command sends the string TEXT to the inferior, and displays the\n\
11881 response packet. GDB supplies the initial `$' character, and the\n\
11882 terminating `#' character and checksum."),
11885 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11886 Set whether to send break if interrupted."), _("\
11887 Show whether to send break if interrupted."), _("\
11888 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11889 set_remotebreak
, show_remotebreak
,
11890 &setlist
, &showlist
);
11891 cmd_name
= "remotebreak";
11892 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11893 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11894 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11895 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11896 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11898 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11899 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11901 Set interrupt sequence to remote target."), _("\
11902 Show interrupt sequence to remote target."), _("\
11903 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11904 NULL
, show_interrupt_sequence
,
11905 &remote_set_cmdlist
,
11906 &remote_show_cmdlist
);
11908 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11909 &interrupt_on_connect
, _("\
11910 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11911 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11912 If set, interrupt sequence is sent to remote target."),
11914 &remote_set_cmdlist
, &remote_show_cmdlist
);
11916 /* Install commands for configuring memory read/write packets. */
11918 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11919 Set the maximum number of bytes per memory write packet (deprecated)."),
11921 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11922 Show the maximum number of bytes per memory write packet (deprecated)."),
11924 add_cmd ("memory-write-packet-size", no_class
,
11925 set_memory_write_packet_size
, _("\
11926 Set the maximum number of bytes per memory-write packet.\n\
11927 Specify the number of bytes in a packet or 0 (zero) for the\n\
11928 default packet size. The actual limit is further reduced\n\
11929 dependent on the target. Specify ``fixed'' to disable the\n\
11930 further restriction and ``limit'' to enable that restriction."),
11931 &remote_set_cmdlist
);
11932 add_cmd ("memory-read-packet-size", no_class
,
11933 set_memory_read_packet_size
, _("\
11934 Set the maximum number of bytes per memory-read packet.\n\
11935 Specify the number of bytes in a packet or 0 (zero) for the\n\
11936 default packet size. The actual limit is further reduced\n\
11937 dependent on the target. Specify ``fixed'' to disable the\n\
11938 further restriction and ``limit'' to enable that restriction."),
11939 &remote_set_cmdlist
);
11940 add_cmd ("memory-write-packet-size", no_class
,
11941 show_memory_write_packet_size
,
11942 _("Show the maximum number of bytes per memory-write packet."),
11943 &remote_show_cmdlist
);
11944 add_cmd ("memory-read-packet-size", no_class
,
11945 show_memory_read_packet_size
,
11946 _("Show the maximum number of bytes per memory-read packet."),
11947 &remote_show_cmdlist
);
11949 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11950 &remote_hw_watchpoint_limit
, _("\
11951 Set the maximum number of target hardware watchpoints."), _("\
11952 Show the maximum number of target hardware watchpoints."), _("\
11953 Specify a negative limit for unlimited."),
11954 NULL
, NULL
, /* FIXME: i18n: The maximum
11955 number of target hardware
11956 watchpoints is %s. */
11957 &remote_set_cmdlist
, &remote_show_cmdlist
);
11958 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11959 &remote_hw_watchpoint_length_limit
, _("\
11960 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11961 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11962 Specify a negative limit for unlimited."),
11963 NULL
, NULL
, /* FIXME: i18n: The maximum
11964 length (in bytes) of a target
11965 hardware watchpoint is %s. */
11966 &remote_set_cmdlist
, &remote_show_cmdlist
);
11967 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11968 &remote_hw_breakpoint_limit
, _("\
11969 Set the maximum number of target hardware breakpoints."), _("\
11970 Show the maximum number of target hardware breakpoints."), _("\
11971 Specify a negative limit for unlimited."),
11972 NULL
, NULL
, /* FIXME: i18n: The maximum
11973 number of target hardware
11974 breakpoints is %s. */
11975 &remote_set_cmdlist
, &remote_show_cmdlist
);
11977 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11978 &remote_address_size
, _("\
11979 Set the maximum size of the address (in bits) in a memory packet."), _("\
11980 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11982 NULL
, /* FIXME: i18n: */
11983 &setlist
, &showlist
);
11985 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11986 "X", "binary-download", 1);
11988 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11989 "vCont", "verbose-resume", 0);
11991 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11992 "QPassSignals", "pass-signals", 0);
11994 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11995 "QProgramSignals", "program-signals", 0);
11997 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11998 "qSymbol", "symbol-lookup", 0);
12000 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
12001 "P", "set-register", 1);
12003 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12004 "p", "fetch-register", 1);
12006 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12007 "Z0", "software-breakpoint", 0);
12009 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12010 "Z1", "hardware-breakpoint", 0);
12012 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12013 "Z2", "write-watchpoint", 0);
12015 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12016 "Z3", "read-watchpoint", 0);
12018 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12019 "Z4", "access-watchpoint", 0);
12021 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12022 "qXfer:auxv:read", "read-aux-vector", 0);
12024 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12025 "qXfer:features:read", "target-features", 0);
12027 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12028 "qXfer:libraries:read", "library-info", 0);
12030 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12031 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12033 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12034 "qXfer:memory-map:read", "memory-map", 0);
12036 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12037 "qXfer:spu:read", "read-spu-object", 0);
12039 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12040 "qXfer:spu:write", "write-spu-object", 0);
12042 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12043 "qXfer:osdata:read", "osdata", 0);
12045 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12046 "qXfer:threads:read", "threads", 0);
12048 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12049 "qXfer:siginfo:read", "read-siginfo-object", 0);
12051 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12052 "qXfer:siginfo:write", "write-siginfo-object", 0);
12054 add_packet_config_cmd
12055 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12056 "qXfer:traceframe-info:read", "traceframe-info", 0);
12058 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12059 "qXfer:uib:read", "unwind-info-block", 0);
12061 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12062 "qGetTLSAddr", "get-thread-local-storage-address",
12065 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12066 "qGetTIBAddr", "get-thread-information-block-address",
12069 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12070 "bc", "reverse-continue", 0);
12072 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12073 "bs", "reverse-step", 0);
12075 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12076 "qSupported", "supported-packets", 0);
12078 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12079 "qSearch:memory", "search-memory", 0);
12081 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12082 "qTStatus", "trace-status", 0);
12084 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12085 "vFile:open", "hostio-open", 0);
12087 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12088 "vFile:pread", "hostio-pread", 0);
12090 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12091 "vFile:pwrite", "hostio-pwrite", 0);
12093 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12094 "vFile:close", "hostio-close", 0);
12096 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12097 "vFile:unlink", "hostio-unlink", 0);
12099 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12100 "vFile:readlink", "hostio-readlink", 0);
12102 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12103 "vAttach", "attach", 0);
12105 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12108 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12109 "QStartNoAckMode", "noack", 0);
12111 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12112 "vKill", "kill", 0);
12114 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12115 "qAttached", "query-attached", 0);
12117 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12118 "ConditionalTracepoints",
12119 "conditional-tracepoints", 0);
12121 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12122 "ConditionalBreakpoints",
12123 "conditional-breakpoints", 0);
12125 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12126 "BreakpointCommands",
12127 "breakpoint-commands", 0);
12129 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12130 "FastTracepoints", "fast-tracepoints", 0);
12132 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12133 "TracepointSource", "TracepointSource", 0);
12135 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12136 "QAllow", "allow", 0);
12138 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12139 "StaticTracepoints", "static-tracepoints", 0);
12141 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12142 "InstallInTrace", "install-in-trace", 0);
12144 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12145 "qXfer:statictrace:read", "read-sdata-object", 0);
12147 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12148 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12150 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12151 "QDisableRandomization", "disable-randomization", 0);
12153 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12154 "QAgent", "agent", 0);
12156 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12157 "QTBuffer:size", "trace-buffer-size", 0);
12159 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12160 "Qbtrace:off", "disable-btrace", 0);
12162 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12163 "Qbtrace:bts", "enable-btrace", 0);
12165 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12166 "qXfer:btrace", "read-btrace", 0);
12168 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12169 Z sub-packet has its own set and show commands, but users may
12170 have sets to this variable in their .gdbinit files (or in their
12172 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12173 &remote_Z_packet_detect
, _("\
12174 Set use of remote protocol `Z' packets"), _("\
12175 Show use of remote protocol `Z' packets "), _("\
12176 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12178 set_remote_protocol_Z_packet_cmd
,
12179 show_remote_protocol_Z_packet_cmd
,
12180 /* FIXME: i18n: Use of remote protocol
12181 `Z' packets is %s. */
12182 &remote_set_cmdlist
, &remote_show_cmdlist
);
12184 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12185 Manipulate files on the remote system\n\
12186 Transfer files to and from the remote target system."),
12187 &remote_cmdlist
, "remote ",
12188 0 /* allow-unknown */, &cmdlist
);
12190 add_cmd ("put", class_files
, remote_put_command
,
12191 _("Copy a local file to the remote system."),
12194 add_cmd ("get", class_files
, remote_get_command
,
12195 _("Copy a remote file to the local system."),
12198 add_cmd ("delete", class_files
, remote_delete_command
,
12199 _("Delete a remote file."),
12202 remote_exec_file
= xstrdup ("");
12203 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12204 &remote_exec_file
, _("\
12205 Set the remote pathname for \"run\""), _("\
12206 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12207 &remote_set_cmdlist
, &remote_show_cmdlist
);
12209 add_setshow_boolean_cmd ("range-stepping", class_run
,
12210 &use_range_stepping
, _("\
12211 Enable or disable range stepping."), _("\
12212 Show whether target-assisted range stepping is enabled."), _("\
12213 If on, and the target supports it, when stepping a source line, GDB\n\
12214 tells the target to step the corresponding range of addresses itself instead\n\
12215 of issuing multiple single-steps. This speeds up source level\n\
12216 stepping. If off, GDB always issues single-steps, even if range\n\
12217 stepping is supported by the target. The default is on."),
12218 set_range_stepping
,
12219 show_range_stepping
,
12223 /* Eventually initialize fileio. See fileio.c */
12224 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12226 /* Take advantage of the fact that the LWP field is not used, to tag
12227 special ptids with it set to != 0. */
12228 magic_null_ptid
= ptid_build (42000, 1, -1);
12229 not_sent_ptid
= ptid_build (42000, 1, -2);
12230 any_thread_ptid
= ptid_build (42000, 1, 0);
12232 target_buf_size
= 2048;
12233 target_buf
= xmalloc (target_buf_size
);