1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
39 #include "gdb_assert.h"
42 #include "cli/cli-decode.h"
43 #include "cli/cli-setshow.h"
44 #include "target-descriptions.h"
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
58 #include "remote-fileio.h"
59 #include "gdb/fileio.h"
61 #include "xml-support.h"
63 #include "memory-map.h"
65 #include "tracepoint.h"
69 /* Temp hacks for tracepoint encoding migration. */
70 static char *target_buf
;
71 static long target_buf_size
;
73 /* The size to align memory write packets, when practical. The protocol
74 does not guarantee any alignment, and gdb will generate short
75 writes and unaligned writes, but even as a best-effort attempt this
76 can improve bulk transfers. For instance, if a write is misaligned
77 relative to the target's data bus, the stub may need to make an extra
78 round trip fetching data from the target. This doesn't make a
79 huge difference, but it's easy to do, so we try to be helpful.
81 The alignment chosen is arbitrary; usually data bus width is
82 important here, not the possibly larger cache line size. */
83 enum { REMOTE_ALIGN_WRITES
= 16 };
85 /* Prototypes for local functions. */
86 static void cleanup_sigint_signal_handler (void *dummy
);
87 static void initialize_sigint_signal_handler (void);
88 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
89 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
92 static void handle_remote_sigint (int);
93 static void handle_remote_sigint_twice (int);
94 static void async_remote_interrupt (gdb_client_data
);
95 void async_remote_interrupt_twice (gdb_client_data
);
97 static void remote_files_info (struct target_ops
*ignore
);
99 static void remote_prepare_to_store (struct regcache
*regcache
);
101 static void remote_open (char *name
, int from_tty
);
103 static void extended_remote_open (char *name
, int from_tty
);
105 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
107 static void remote_close (int quitting
);
109 static void remote_mourn (struct target_ops
*ops
);
111 static void extended_remote_restart (void);
113 static void extended_remote_mourn (struct target_ops
*);
115 static void remote_mourn_1 (struct target_ops
*);
117 static void remote_send (char **buf
, long *sizeof_buf_p
);
119 static int readchar (int timeout
);
121 static void remote_kill (struct target_ops
*ops
);
123 static int tohex (int nib
);
125 static int remote_can_async_p (void);
127 static int remote_is_async_p (void);
129 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
130 void *context
), void *context
);
132 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
134 static void remote_interrupt (int signo
);
136 static void remote_interrupt_twice (int signo
);
138 static void interrupt_query (void);
140 static void set_general_thread (struct ptid ptid
);
141 static void set_continue_thread (struct ptid ptid
);
143 static void get_offsets (void);
145 static void skip_frame (void);
147 static long read_frame (char **buf_p
, long *sizeof_buf
);
149 static int hexnumlen (ULONGEST num
);
151 static void init_remote_ops (void);
153 static void init_extended_remote_ops (void);
155 static void remote_stop (ptid_t
);
157 static int ishex (int ch
, int *val
);
159 static int stubhex (int ch
);
161 static int hexnumstr (char *, ULONGEST
);
163 static int hexnumnstr (char *, ULONGEST
, int);
165 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
167 static void print_packet (char *);
169 static void compare_sections_command (char *, int);
171 static void packet_command (char *, int);
173 static int stub_unpack_int (char *buff
, int fieldlength
);
175 static ptid_t
remote_current_thread (ptid_t oldptid
);
177 static void remote_find_new_threads (void);
179 static void record_currthread (ptid_t currthread
);
181 static int fromhex (int a
);
183 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
185 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
187 static int putpkt_binary (char *buf
, int cnt
);
189 static void check_binary_download (CORE_ADDR addr
);
191 struct packet_config
;
193 static void show_packet_config_cmd (struct packet_config
*config
);
195 static void update_packet_config (struct packet_config
*config
);
197 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
198 struct cmd_list_element
*c
);
200 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
202 struct cmd_list_element
*c
,
205 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
206 static ptid_t
read_ptid (char *buf
, char **obuf
);
208 static void remote_set_permissions (void);
211 static int remote_get_trace_status (struct trace_status
*ts
);
213 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
215 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
217 static void remote_query_supported (void);
219 static void remote_check_symbols (struct objfile
*objfile
);
221 void _initialize_remote (void);
224 static struct stop_reply
*stop_reply_xmalloc (void);
225 static void stop_reply_xfree (struct stop_reply
*);
226 static void do_stop_reply_xfree (void *arg
);
227 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
228 static void push_stop_reply (struct stop_reply
*);
229 static void remote_get_pending_stop_replies (void);
230 static void discard_pending_stop_replies (int pid
);
231 static int peek_stop_reply (ptid_t ptid
);
233 static void remote_async_inferior_event_handler (gdb_client_data
);
234 static void remote_async_get_pending_events_handler (gdb_client_data
);
236 static void remote_terminal_ours (void);
238 static int remote_read_description_p (struct target_ops
*target
);
240 static void remote_console_output (char *msg
);
242 static int remote_supports_cond_breakpoints (void);
244 /* The non-stop remote protocol provisions for one pending stop reply.
245 This is where we keep it until it is acknowledged. */
247 static struct stop_reply
*pending_stop_reply
= NULL
;
251 static struct cmd_list_element
*remote_cmdlist
;
253 /* For "set remote" and "show remote". */
255 static struct cmd_list_element
*remote_set_cmdlist
;
256 static struct cmd_list_element
*remote_show_cmdlist
;
258 /* Description of the remote protocol state for the currently
259 connected target. This is per-target state, and independent of the
260 selected architecture. */
264 /* A buffer to use for incoming packets, and its current size. The
265 buffer is grown dynamically for larger incoming packets.
266 Outgoing packets may also be constructed in this buffer.
267 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
268 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
273 /* If we negotiated packet size explicitly (and thus can bypass
274 heuristics for the largest packet size that will not overflow
275 a buffer in the stub), this will be set to that packet size.
276 Otherwise zero, meaning to use the guessed size. */
277 long explicit_packet_size
;
279 /* remote_wait is normally called when the target is running and
280 waits for a stop reply packet. But sometimes we need to call it
281 when the target is already stopped. We can send a "?" packet
282 and have remote_wait read the response. Or, if we already have
283 the response, we can stash it in BUF and tell remote_wait to
284 skip calling getpkt. This flag is set when BUF contains a
285 stop reply packet and the target is not waiting. */
286 int cached_wait_status
;
288 /* True, if in no ack mode. That is, neither GDB nor the stub will
289 expect acks from each other. The connection is assumed to be
293 /* True if we're connected in extended remote mode. */
296 /* True if the stub reported support for multi-process
298 int multi_process_aware
;
300 /* True if we resumed the target and we're waiting for the target to
301 stop. In the mean time, we can't start another command/query.
302 The remote server wouldn't be ready to process it, so we'd
303 timeout waiting for a reply that would never come and eventually
304 we'd close the connection. This can happen in asynchronous mode
305 because we allow GDB commands while the target is running. */
306 int waiting_for_stop_reply
;
308 /* True if the stub reports support for non-stop mode. */
311 /* True if the stub reports support for vCont;t. */
314 /* True if the stub reports support for conditional tracepoints. */
315 int cond_tracepoints
;
317 /* True if the stub reports support for target-side breakpoint
319 int cond_breakpoints
;
321 /* True if the stub reports support for fast tracepoints. */
322 int fast_tracepoints
;
324 /* True if the stub reports support for static tracepoints. */
325 int static_tracepoints
;
327 /* True if the stub reports support for installing tracepoint while
329 int install_in_trace
;
331 /* True if the stub can continue running a trace while GDB is
333 int disconnected_tracing
;
335 /* True if the stub reports support for enabling and disabling
336 tracepoints while a trace experiment is running. */
337 int enable_disable_tracepoints
;
339 /* True if the stub can collect strings using tracenz bytecode. */
342 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
343 responded to that. */
347 /* Private data that we'll store in (struct thread_info)->private. */
348 struct private_thread_info
355 free_private_thread_info (struct private_thread_info
*info
)
361 /* Returns true if the multi-process extensions are in effect. */
363 remote_multi_process_p (struct remote_state
*rs
)
365 return rs
->multi_process_aware
;
368 /* This data could be associated with a target, but we do not always
369 have access to the current target when we need it, so for now it is
370 static. This will be fine for as long as only one target is in use
372 static struct remote_state remote_state
;
374 static struct remote_state
*
375 get_remote_state_raw (void)
377 return &remote_state
;
380 /* Description of the remote protocol for a given architecture. */
384 long offset
; /* Offset into G packet. */
385 long regnum
; /* GDB's internal register number. */
386 LONGEST pnum
; /* Remote protocol register number. */
387 int in_g_packet
; /* Always part of G packet. */
388 /* long size in bytes; == register_size (target_gdbarch, regnum);
390 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
394 struct remote_arch_state
396 /* Description of the remote protocol registers. */
397 long sizeof_g_packet
;
399 /* Description of the remote protocol registers indexed by REGNUM
400 (making an array gdbarch_num_regs in size). */
401 struct packet_reg
*regs
;
403 /* This is the size (in chars) of the first response to the ``g''
404 packet. It is used as a heuristic when determining the maximum
405 size of memory-read and memory-write packets. A target will
406 typically only reserve a buffer large enough to hold the ``g''
407 packet. The size does not include packet overhead (headers and
409 long actual_register_packet_size
;
411 /* This is the maximum size (in chars) of a non read/write packet.
412 It is also used as a cap on the size of read/write packets. */
413 long remote_packet_size
;
416 long sizeof_pkt
= 2000;
418 /* Utility: generate error from an incoming stub packet. */
420 trace_error (char *buf
)
423 return; /* not an error msg */
426 case '1': /* malformed packet error */
427 if (*++buf
== '0') /* general case: */
428 error (_("remote.c: error in outgoing packet."));
430 error (_("remote.c: error in outgoing packet at field #%ld."),
431 strtol (buf
, NULL
, 16));
433 error (_("trace API error 0x%s."), ++buf
);
435 error (_("Target returns error code '%s'."), buf
);
439 /* Utility: wait for reply from stub, while accepting "O" packets. */
441 remote_get_noisy_reply (char **buf_p
,
444 do /* Loop on reply from remote stub. */
448 QUIT
; /* Allow user to bail out with ^C. */
449 getpkt (buf_p
, sizeof_buf
, 0);
453 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
456 CORE_ADDR from
, to
, org_to
;
458 int adjusted_size
= 0;
459 volatile struct gdb_exception ex
;
461 p
= buf
+ strlen ("qRelocInsn:");
462 pp
= unpack_varlen_hex (p
, &ul
);
464 error (_("invalid qRelocInsn packet: %s"), buf
);
468 unpack_varlen_hex (p
, &ul
);
473 TRY_CATCH (ex
, RETURN_MASK_ALL
)
475 gdbarch_relocate_instruction (target_gdbarch
, &to
, from
);
479 adjusted_size
= to
- org_to
;
481 sprintf (buf
, "qRelocInsn:%x", adjusted_size
);
484 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
486 /* Propagate memory errors silently back to the target.
487 The stub may have limited the range of addresses we
488 can write to, for example. */
493 /* Something unexpectedly bad happened. Be verbose so
494 we can tell what, and propagate the error back to the
495 stub, so it doesn't get stuck waiting for a
497 exception_fprintf (gdb_stderr
, ex
,
498 _("warning: relocating instruction: "));
502 else if (buf
[0] == 'O' && buf
[1] != 'K')
503 remote_console_output (buf
+ 1); /* 'O' message from stub */
505 return buf
; /* Here's the actual reply. */
510 /* Handle for retreving the remote protocol data from gdbarch. */
511 static struct gdbarch_data
*remote_gdbarch_data_handle
;
513 static struct remote_arch_state
*
514 get_remote_arch_state (void)
516 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
519 /* Fetch the global remote target state. */
521 static struct remote_state
*
522 get_remote_state (void)
524 /* Make sure that the remote architecture state has been
525 initialized, because doing so might reallocate rs->buf. Any
526 function which calls getpkt also needs to be mindful of changes
527 to rs->buf, but this call limits the number of places which run
529 get_remote_arch_state ();
531 return get_remote_state_raw ();
535 compare_pnums (const void *lhs_
, const void *rhs_
)
537 const struct packet_reg
* const *lhs
= lhs_
;
538 const struct packet_reg
* const *rhs
= rhs_
;
540 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
542 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
549 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
551 int regnum
, num_remote_regs
, offset
;
552 struct packet_reg
**remote_regs
;
554 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
556 struct packet_reg
*r
= ®s
[regnum
];
558 if (register_size (gdbarch
, regnum
) == 0)
559 /* Do not try to fetch zero-sized (placeholder) registers. */
562 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
567 /* Define the g/G packet format as the contents of each register
568 with a remote protocol number, in order of ascending protocol
571 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
572 * sizeof (struct packet_reg
*));
573 for (num_remote_regs
= 0, regnum
= 0;
574 regnum
< gdbarch_num_regs (gdbarch
);
576 if (regs
[regnum
].pnum
!= -1)
577 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
579 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
582 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
584 remote_regs
[regnum
]->in_g_packet
= 1;
585 remote_regs
[regnum
]->offset
= offset
;
586 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
592 /* Given the architecture described by GDBARCH, return the remote
593 protocol register's number and the register's offset in the g/G
594 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
595 If the target does not have a mapping for REGNUM, return false,
596 otherwise, return true. */
599 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
600 int *pnum
, int *poffset
)
603 struct packet_reg
*regs
;
604 struct cleanup
*old_chain
;
606 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
608 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
609 old_chain
= make_cleanup (xfree
, regs
);
611 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
613 *pnum
= regs
[regnum
].pnum
;
614 *poffset
= regs
[regnum
].offset
;
616 do_cleanups (old_chain
);
622 init_remote_state (struct gdbarch
*gdbarch
)
624 struct remote_state
*rs
= get_remote_state_raw ();
625 struct remote_arch_state
*rsa
;
627 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
629 /* Use the architecture to build a regnum<->pnum table, which will be
630 1:1 unless a feature set specifies otherwise. */
631 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
632 gdbarch_num_regs (gdbarch
),
635 /* Record the maximum possible size of the g packet - it may turn out
637 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
639 /* Default maximum number of characters in a packet body. Many
640 remote stubs have a hardwired buffer size of 400 bytes
641 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
642 as the maximum packet-size to ensure that the packet and an extra
643 NUL character can always fit in the buffer. This stops GDB
644 trashing stubs that try to squeeze an extra NUL into what is
645 already a full buffer (As of 1999-12-04 that was most stubs). */
646 rsa
->remote_packet_size
= 400 - 1;
648 /* This one is filled in when a ``g'' packet is received. */
649 rsa
->actual_register_packet_size
= 0;
651 /* Should rsa->sizeof_g_packet needs more space than the
652 default, adjust the size accordingly. Remember that each byte is
653 encoded as two characters. 32 is the overhead for the packet
654 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
655 (``$NN:G...#NN'') is a better guess, the below has been padded a
657 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
658 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
660 /* Make sure that the packet buffer is plenty big enough for
661 this architecture. */
662 if (rs
->buf_size
< rsa
->remote_packet_size
)
664 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
665 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
671 /* Return the current allowed size of a remote packet. This is
672 inferred from the current architecture, and should be used to
673 limit the length of outgoing packets. */
675 get_remote_packet_size (void)
677 struct remote_state
*rs
= get_remote_state ();
678 struct remote_arch_state
*rsa
= get_remote_arch_state ();
680 if (rs
->explicit_packet_size
)
681 return rs
->explicit_packet_size
;
683 return rsa
->remote_packet_size
;
686 static struct packet_reg
*
687 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
689 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
693 struct packet_reg
*r
= &rsa
->regs
[regnum
];
695 gdb_assert (r
->regnum
== regnum
);
700 static struct packet_reg
*
701 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
705 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
707 struct packet_reg
*r
= &rsa
->regs
[i
];
715 /* FIXME: graces/2002-08-08: These variables should eventually be
716 bound to an instance of the target object (as in gdbarch-tdep()),
717 when such a thing exists. */
719 /* This is set to the data address of the access causing the target
720 to stop for a watchpoint. */
721 static CORE_ADDR remote_watch_data_address
;
723 /* This is non-zero if target stopped for a watchpoint. */
724 static int remote_stopped_by_watchpoint_p
;
726 static struct target_ops remote_ops
;
728 static struct target_ops extended_remote_ops
;
730 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
731 ``forever'' still use the normal timeout mechanism. This is
732 currently used by the ASYNC code to guarentee that target reads
733 during the initial connect always time-out. Once getpkt has been
734 modified to return a timeout indication and, in turn
735 remote_wait()/wait_for_inferior() have gained a timeout parameter
737 static int wait_forever_enabled_p
= 1;
739 /* Allow the user to specify what sequence to send to the remote
740 when he requests a program interruption: Although ^C is usually
741 what remote systems expect (this is the default, here), it is
742 sometimes preferable to send a break. On other systems such
743 as the Linux kernel, a break followed by g, which is Magic SysRq g
744 is required in order to interrupt the execution. */
745 const char interrupt_sequence_control_c
[] = "Ctrl-C";
746 const char interrupt_sequence_break
[] = "BREAK";
747 const char interrupt_sequence_break_g
[] = "BREAK-g";
748 static const char *const interrupt_sequence_modes
[] =
750 interrupt_sequence_control_c
,
751 interrupt_sequence_break
,
752 interrupt_sequence_break_g
,
755 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
758 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
759 struct cmd_list_element
*c
,
762 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
763 fprintf_filtered (file
,
764 _("Send the ASCII ETX character (Ctrl-c) "
765 "to the remote target to interrupt the "
766 "execution of the program.\n"));
767 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
768 fprintf_filtered (file
,
769 _("send a break signal to the remote target "
770 "to interrupt the execution of the program.\n"));
771 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
772 fprintf_filtered (file
,
773 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
774 "the remote target to interrupt the execution "
775 "of Linux kernel.\n"));
777 internal_error (__FILE__
, __LINE__
,
778 _("Invalid value for interrupt_sequence_mode: %s."),
779 interrupt_sequence_mode
);
782 /* This boolean variable specifies whether interrupt_sequence is sent
783 to the remote target when gdb connects to it.
784 This is mostly needed when you debug the Linux kernel: The Linux kernel
785 expects BREAK g which is Magic SysRq g for connecting gdb. */
786 static int interrupt_on_connect
= 0;
788 /* This variable is used to implement the "set/show remotebreak" commands.
789 Since these commands are now deprecated in favor of "set/show remote
790 interrupt-sequence", it no longer has any effect on the code. */
791 static int remote_break
;
794 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
797 interrupt_sequence_mode
= interrupt_sequence_break
;
799 interrupt_sequence_mode
= interrupt_sequence_control_c
;
803 show_remotebreak (struct ui_file
*file
, int from_tty
,
804 struct cmd_list_element
*c
,
809 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
810 remote_open knows that we don't have a file open when the program
812 static struct serial
*remote_desc
= NULL
;
814 /* This variable sets the number of bits in an address that are to be
815 sent in a memory ("M" or "m") packet. Normally, after stripping
816 leading zeros, the entire address would be sent. This variable
817 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
818 initial implementation of remote.c restricted the address sent in
819 memory packets to ``host::sizeof long'' bytes - (typically 32
820 bits). Consequently, for 64 bit targets, the upper 32 bits of an
821 address was never sent. Since fixing this bug may cause a break in
822 some remote targets this variable is principly provided to
823 facilitate backward compatibility. */
825 static int remote_address_size
;
827 /* Temporary to track who currently owns the terminal. See
828 remote_terminal_* for more details. */
830 static int remote_async_terminal_ours_p
;
832 /* The executable file to use for "run" on the remote side. */
834 static char *remote_exec_file
= "";
837 /* User configurable variables for the number of characters in a
838 memory read/write packet. MIN (rsa->remote_packet_size,
839 rsa->sizeof_g_packet) is the default. Some targets need smaller
840 values (fifo overruns, et.al.) and some users need larger values
841 (speed up transfers). The variables ``preferred_*'' (the user
842 request), ``current_*'' (what was actually set) and ``forced_*''
843 (Positive - a soft limit, negative - a hard limit). */
845 struct memory_packet_config
852 /* Compute the current size of a read/write packet. Since this makes
853 use of ``actual_register_packet_size'' the computation is dynamic. */
856 get_memory_packet_size (struct memory_packet_config
*config
)
858 struct remote_state
*rs
= get_remote_state ();
859 struct remote_arch_state
*rsa
= get_remote_arch_state ();
861 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
862 law?) that some hosts don't cope very well with large alloca()
863 calls. Eventually the alloca() code will be replaced by calls to
864 xmalloc() and make_cleanups() allowing this restriction to either
865 be lifted or removed. */
866 #ifndef MAX_REMOTE_PACKET_SIZE
867 #define MAX_REMOTE_PACKET_SIZE 16384
869 /* NOTE: 20 ensures we can write at least one byte. */
870 #ifndef MIN_REMOTE_PACKET_SIZE
871 #define MIN_REMOTE_PACKET_SIZE 20
876 if (config
->size
<= 0)
877 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
879 what_they_get
= config
->size
;
883 what_they_get
= get_remote_packet_size ();
884 /* Limit the packet to the size specified by the user. */
886 && what_they_get
> config
->size
)
887 what_they_get
= config
->size
;
889 /* Limit it to the size of the targets ``g'' response unless we have
890 permission from the stub to use a larger packet size. */
891 if (rs
->explicit_packet_size
== 0
892 && rsa
->actual_register_packet_size
> 0
893 && what_they_get
> rsa
->actual_register_packet_size
)
894 what_they_get
= rsa
->actual_register_packet_size
;
896 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
897 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
898 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
899 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
901 /* Make sure there is room in the global buffer for this packet
902 (including its trailing NUL byte). */
903 if (rs
->buf_size
< what_they_get
+ 1)
905 rs
->buf_size
= 2 * what_they_get
;
906 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
909 return what_they_get
;
912 /* Update the size of a read/write packet. If they user wants
913 something really big then do a sanity check. */
916 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
918 int fixed_p
= config
->fixed_p
;
919 long size
= config
->size
;
922 error (_("Argument required (integer, `fixed' or `limited')."));
923 else if (strcmp (args
, "hard") == 0
924 || strcmp (args
, "fixed") == 0)
926 else if (strcmp (args
, "soft") == 0
927 || strcmp (args
, "limit") == 0)
933 size
= strtoul (args
, &end
, 0);
935 error (_("Invalid %s (bad syntax)."), config
->name
);
937 /* Instead of explicitly capping the size of a packet to
938 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
939 instead allowed to set the size to something arbitrarily
941 if (size
> MAX_REMOTE_PACKET_SIZE
)
942 error (_("Invalid %s (too large)."), config
->name
);
946 if (fixed_p
&& !config
->fixed_p
)
948 if (! query (_("The target may not be able to correctly handle a %s\n"
949 "of %ld bytes. Change the packet size? "),
951 error (_("Packet size not changed."));
953 /* Update the config. */
954 config
->fixed_p
= fixed_p
;
959 show_memory_packet_size (struct memory_packet_config
*config
)
961 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
963 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
964 get_memory_packet_size (config
));
966 printf_filtered (_("Packets are limited to %ld bytes.\n"),
967 get_memory_packet_size (config
));
970 static struct memory_packet_config memory_write_packet_config
=
972 "memory-write-packet-size",
976 set_memory_write_packet_size (char *args
, int from_tty
)
978 set_memory_packet_size (args
, &memory_write_packet_config
);
982 show_memory_write_packet_size (char *args
, int from_tty
)
984 show_memory_packet_size (&memory_write_packet_config
);
988 get_memory_write_packet_size (void)
990 return get_memory_packet_size (&memory_write_packet_config
);
993 static struct memory_packet_config memory_read_packet_config
=
995 "memory-read-packet-size",
999 set_memory_read_packet_size (char *args
, int from_tty
)
1001 set_memory_packet_size (args
, &memory_read_packet_config
);
1005 show_memory_read_packet_size (char *args
, int from_tty
)
1007 show_memory_packet_size (&memory_read_packet_config
);
1011 get_memory_read_packet_size (void)
1013 long size
= get_memory_packet_size (&memory_read_packet_config
);
1015 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1016 extra buffer size argument before the memory read size can be
1017 increased beyond this. */
1018 if (size
> get_remote_packet_size ())
1019 size
= get_remote_packet_size ();
1024 /* Generic configuration support for packets the stub optionally
1025 supports. Allows the user to specify the use of the packet as well
1026 as allowing GDB to auto-detect support in the remote stub. */
1030 PACKET_SUPPORT_UNKNOWN
= 0,
1035 struct packet_config
1039 enum auto_boolean detect
;
1040 enum packet_support support
;
1043 /* Analyze a packet's return value and update the packet config
1054 update_packet_config (struct packet_config
*config
)
1056 switch (config
->detect
)
1058 case AUTO_BOOLEAN_TRUE
:
1059 config
->support
= PACKET_ENABLE
;
1061 case AUTO_BOOLEAN_FALSE
:
1062 config
->support
= PACKET_DISABLE
;
1064 case AUTO_BOOLEAN_AUTO
:
1065 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1071 show_packet_config_cmd (struct packet_config
*config
)
1073 char *support
= "internal-error";
1075 switch (config
->support
)
1078 support
= "enabled";
1080 case PACKET_DISABLE
:
1081 support
= "disabled";
1083 case PACKET_SUPPORT_UNKNOWN
:
1084 support
= "unknown";
1087 switch (config
->detect
)
1089 case AUTO_BOOLEAN_AUTO
:
1090 printf_filtered (_("Support for the `%s' packet "
1091 "is auto-detected, currently %s.\n"),
1092 config
->name
, support
);
1094 case AUTO_BOOLEAN_TRUE
:
1095 case AUTO_BOOLEAN_FALSE
:
1096 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1097 config
->name
, support
);
1103 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1104 const char *title
, int legacy
)
1110 config
->name
= name
;
1111 config
->title
= title
;
1112 config
->detect
= AUTO_BOOLEAN_AUTO
;
1113 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1114 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1116 show_doc
= xstrprintf ("Show current use of remote "
1117 "protocol `%s' (%s) packet",
1119 /* set/show TITLE-packet {auto,on,off} */
1120 cmd_name
= xstrprintf ("%s-packet", title
);
1121 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1122 &config
->detect
, set_doc
,
1123 show_doc
, NULL
, /* help_doc */
1124 set_remote_protocol_packet_cmd
,
1125 show_remote_protocol_packet_cmd
,
1126 &remote_set_cmdlist
, &remote_show_cmdlist
);
1127 /* The command code copies the documentation strings. */
1130 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1135 legacy_name
= xstrprintf ("%s-packet", name
);
1136 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1137 &remote_set_cmdlist
);
1138 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1139 &remote_show_cmdlist
);
1143 static enum packet_result
1144 packet_check_result (const char *buf
)
1148 /* The stub recognized the packet request. Check that the
1149 operation succeeded. */
1151 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1153 /* "Enn" - definitly an error. */
1154 return PACKET_ERROR
;
1156 /* Always treat "E." as an error. This will be used for
1157 more verbose error messages, such as E.memtypes. */
1158 if (buf
[0] == 'E' && buf
[1] == '.')
1159 return PACKET_ERROR
;
1161 /* The packet may or may not be OK. Just assume it is. */
1165 /* The stub does not support the packet. */
1166 return PACKET_UNKNOWN
;
1169 static enum packet_result
1170 packet_ok (const char *buf
, struct packet_config
*config
)
1172 enum packet_result result
;
1174 result
= packet_check_result (buf
);
1179 /* The stub recognized the packet request. */
1180 switch (config
->support
)
1182 case PACKET_SUPPORT_UNKNOWN
:
1184 fprintf_unfiltered (gdb_stdlog
,
1185 "Packet %s (%s) is supported\n",
1186 config
->name
, config
->title
);
1187 config
->support
= PACKET_ENABLE
;
1189 case PACKET_DISABLE
:
1190 internal_error (__FILE__
, __LINE__
,
1191 _("packet_ok: attempt to use a disabled packet"));
1197 case PACKET_UNKNOWN
:
1198 /* The stub does not support the packet. */
1199 switch (config
->support
)
1202 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1203 /* If the stub previously indicated that the packet was
1204 supported then there is a protocol error.. */
1205 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1206 config
->name
, config
->title
);
1208 /* The user set it wrong. */
1209 error (_("Enabled packet %s (%s) not recognized by stub"),
1210 config
->name
, config
->title
);
1212 case PACKET_SUPPORT_UNKNOWN
:
1214 fprintf_unfiltered (gdb_stdlog
,
1215 "Packet %s (%s) is NOT supported\n",
1216 config
->name
, config
->title
);
1217 config
->support
= PACKET_DISABLE
;
1219 case PACKET_DISABLE
:
1241 PACKET_vFile_pwrite
,
1243 PACKET_vFile_unlink
,
1244 PACKET_vFile_readlink
,
1246 PACKET_qXfer_features
,
1247 PACKET_qXfer_libraries
,
1248 PACKET_qXfer_libraries_svr4
,
1249 PACKET_qXfer_memory_map
,
1250 PACKET_qXfer_spu_read
,
1251 PACKET_qXfer_spu_write
,
1252 PACKET_qXfer_osdata
,
1253 PACKET_qXfer_threads
,
1254 PACKET_qXfer_statictrace_read
,
1255 PACKET_qXfer_traceframe_info
,
1259 PACKET_QPassSignals
,
1260 PACKET_qSearch_memory
,
1263 PACKET_QStartNoAckMode
,
1265 PACKET_qXfer_siginfo_read
,
1266 PACKET_qXfer_siginfo_write
,
1268 PACKET_ConditionalTracepoints
,
1269 PACKET_ConditionalBreakpoints
,
1270 PACKET_FastTracepoints
,
1271 PACKET_StaticTracepoints
,
1272 PACKET_InstallInTrace
,
1275 PACKET_TracepointSource
,
1278 PACKET_QDisableRandomization
,
1282 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1285 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1286 struct cmd_list_element
*c
)
1288 struct packet_config
*packet
;
1290 for (packet
= remote_protocol_packets
;
1291 packet
< &remote_protocol_packets
[PACKET_MAX
];
1294 if (&packet
->detect
== c
->var
)
1296 update_packet_config (packet
);
1300 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1305 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1306 struct cmd_list_element
*c
,
1309 struct packet_config
*packet
;
1311 for (packet
= remote_protocol_packets
;
1312 packet
< &remote_protocol_packets
[PACKET_MAX
];
1315 if (&packet
->detect
== c
->var
)
1317 show_packet_config_cmd (packet
);
1321 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1325 /* Should we try one of the 'Z' requests? */
1329 Z_PACKET_SOFTWARE_BP
,
1330 Z_PACKET_HARDWARE_BP
,
1337 /* For compatibility with older distributions. Provide a ``set remote
1338 Z-packet ...'' command that updates all the Z packet types. */
1340 static enum auto_boolean remote_Z_packet_detect
;
1343 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1344 struct cmd_list_element
*c
)
1348 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1350 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1351 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1356 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1357 struct cmd_list_element
*c
,
1362 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1364 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1368 /* Should we try the 'ThreadInfo' query packet?
1370 This variable (NOT available to the user: auto-detect only!)
1371 determines whether GDB will use the new, simpler "ThreadInfo"
1372 query or the older, more complex syntax for thread queries.
1373 This is an auto-detect variable (set to true at each connect,
1374 and set to false when the target fails to recognize it). */
1376 static int use_threadinfo_query
;
1377 static int use_threadextra_query
;
1379 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1380 static struct async_signal_handler
*sigint_remote_twice_token
;
1381 static struct async_signal_handler
*sigint_remote_token
;
1384 /* Asynchronous signal handle registered as event loop source for
1385 when we have pending events ready to be passed to the core. */
1387 static struct async_event_handler
*remote_async_inferior_event_token
;
1389 /* Asynchronous signal handle registered as event loop source for when
1390 the remote sent us a %Stop notification. The registered callback
1391 will do a vStopped sequence to pull the rest of the events out of
1392 the remote side into our event queue. */
1394 static struct async_event_handler
*remote_async_get_pending_events_token
;
1397 static ptid_t magic_null_ptid
;
1398 static ptid_t not_sent_ptid
;
1399 static ptid_t any_thread_ptid
;
1401 /* These are the threads which we last sent to the remote system. The
1402 TID member will be -1 for all or -2 for not sent yet. */
1404 static ptid_t general_thread
;
1405 static ptid_t continue_thread
;
1407 /* This the traceframe which we last selected on the remote system.
1408 It will be -1 if no traceframe is selected. */
1409 static int remote_traceframe_number
= -1;
1411 /* Find out if the stub attached to PID (and hence GDB should offer to
1412 detach instead of killing it when bailing out). */
1415 remote_query_attached (int pid
)
1417 struct remote_state
*rs
= get_remote_state ();
1419 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1422 if (remote_multi_process_p (rs
))
1423 sprintf (rs
->buf
, "qAttached:%x", pid
);
1425 sprintf (rs
->buf
, "qAttached");
1428 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1430 switch (packet_ok (rs
->buf
,
1431 &remote_protocol_packets
[PACKET_qAttached
]))
1434 if (strcmp (rs
->buf
, "1") == 0)
1438 warning (_("Remote failure reply: %s"), rs
->buf
);
1440 case PACKET_UNKNOWN
:
1447 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1448 has been invented by GDB, instead of reported by the target. Since
1449 we can be connected to a remote system before before knowing about
1450 any inferior, mark the target with execution when we find the first
1451 inferior. If ATTACHED is 1, then we had just attached to this
1452 inferior. If it is 0, then we just created this inferior. If it
1453 is -1, then try querying the remote stub to find out if it had
1454 attached to the inferior or not. */
1456 static struct inferior
*
1457 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1459 struct inferior
*inf
;
1461 /* Check whether this process we're learning about is to be
1462 considered attached, or if is to be considered to have been
1463 spawned by the stub. */
1465 attached
= remote_query_attached (pid
);
1467 if (gdbarch_has_global_solist (target_gdbarch
))
1469 /* If the target shares code across all inferiors, then every
1470 attach adds a new inferior. */
1471 inf
= add_inferior (pid
);
1473 /* ... and every inferior is bound to the same program space.
1474 However, each inferior may still have its own address
1476 inf
->aspace
= maybe_new_address_space ();
1477 inf
->pspace
= current_program_space
;
1481 /* In the traditional debugging scenario, there's a 1-1 match
1482 between program/address spaces. We simply bind the inferior
1483 to the program space's address space. */
1484 inf
= current_inferior ();
1485 inferior_appeared (inf
, pid
);
1488 inf
->attach_flag
= attached
;
1489 inf
->fake_pid_p
= fake_pid_p
;
1494 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1495 according to RUNNING. */
1498 remote_add_thread (ptid_t ptid
, int running
)
1502 set_executing (ptid
, running
);
1503 set_running (ptid
, running
);
1506 /* Come here when we learn about a thread id from the remote target.
1507 It may be the first time we hear about such thread, so take the
1508 opportunity to add it to GDB's thread list. In case this is the
1509 first time we're noticing its corresponding inferior, add it to
1510 GDB's inferior list as well. */
1513 remote_notice_new_inferior (ptid_t currthread
, int running
)
1515 /* If this is a new thread, add it to GDB's thread list.
1516 If we leave it up to WFI to do this, bad things will happen. */
1518 if (in_thread_list (currthread
) && is_exited (currthread
))
1520 /* We're seeing an event on a thread id we knew had exited.
1521 This has to be a new thread reusing the old id. Add it. */
1522 remote_add_thread (currthread
, running
);
1526 if (!in_thread_list (currthread
))
1528 struct inferior
*inf
= NULL
;
1529 int pid
= ptid_get_pid (currthread
);
1531 if (ptid_is_pid (inferior_ptid
)
1532 && pid
== ptid_get_pid (inferior_ptid
))
1534 /* inferior_ptid has no thread member yet. This can happen
1535 with the vAttach -> remote_wait,"TAAthread:" path if the
1536 stub doesn't support qC. This is the first stop reported
1537 after an attach, so this is the main thread. Update the
1538 ptid in the thread list. */
1539 if (in_thread_list (pid_to_ptid (pid
)))
1540 thread_change_ptid (inferior_ptid
, currthread
);
1543 remote_add_thread (currthread
, running
);
1544 inferior_ptid
= currthread
;
1549 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1551 /* inferior_ptid is not set yet. This can happen with the
1552 vRun -> remote_wait,"TAAthread:" path if the stub
1553 doesn't support qC. This is the first stop reported
1554 after an attach, so this is the main thread. Update the
1555 ptid in the thread list. */
1556 thread_change_ptid (inferior_ptid
, currthread
);
1560 /* When connecting to a target remote, or to a target
1561 extended-remote which already was debugging an inferior, we
1562 may not know about it yet. Add it before adding its child
1563 thread, so notifications are emitted in a sensible order. */
1564 if (!in_inferior_list (ptid_get_pid (currthread
)))
1566 struct remote_state
*rs
= get_remote_state ();
1567 int fake_pid_p
= !remote_multi_process_p (rs
);
1569 inf
= remote_add_inferior (fake_pid_p
,
1570 ptid_get_pid (currthread
), -1);
1573 /* This is really a new thread. Add it. */
1574 remote_add_thread (currthread
, running
);
1576 /* If we found a new inferior, let the common code do whatever
1577 it needs to with it (e.g., read shared libraries, insert
1580 notice_new_inferior (currthread
, running
, 0);
1584 /* Return the private thread data, creating it if necessary. */
1586 struct private_thread_info
*
1587 demand_private_info (ptid_t ptid
)
1589 struct thread_info
*info
= find_thread_ptid (ptid
);
1595 info
->private = xmalloc (sizeof (*(info
->private)));
1596 info
->private_dtor
= free_private_thread_info
;
1597 info
->private->core
= -1;
1598 info
->private->extra
= 0;
1601 return info
->private;
1604 /* Call this function as a result of
1605 1) A halt indication (T packet) containing a thread id
1606 2) A direct query of currthread
1607 3) Successful execution of set thread */
1610 record_currthread (ptid_t currthread
)
1612 general_thread
= currthread
;
1615 static char *last_pass_packet
;
1617 /* If 'QPassSignals' is supported, tell the remote stub what signals
1618 it can simply pass through to the inferior without reporting. */
1621 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1623 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1625 char *pass_packet
, *p
;
1628 gdb_assert (numsigs
< 256);
1629 for (i
= 0; i
< numsigs
; i
++)
1631 if (pass_signals
[i
])
1634 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1635 strcpy (pass_packet
, "QPassSignals:");
1636 p
= pass_packet
+ strlen (pass_packet
);
1637 for (i
= 0; i
< numsigs
; i
++)
1639 if (pass_signals
[i
])
1642 *p
++ = tohex (i
>> 4);
1643 *p
++ = tohex (i
& 15);
1652 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1654 struct remote_state
*rs
= get_remote_state ();
1655 char *buf
= rs
->buf
;
1657 putpkt (pass_packet
);
1658 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1659 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1660 if (last_pass_packet
)
1661 xfree (last_pass_packet
);
1662 last_pass_packet
= pass_packet
;
1665 xfree (pass_packet
);
1669 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1670 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1671 thread. If GEN is set, set the general thread, if not, then set
1672 the step/continue thread. */
1674 set_thread (struct ptid ptid
, int gen
)
1676 struct remote_state
*rs
= get_remote_state ();
1677 ptid_t state
= gen
? general_thread
: continue_thread
;
1678 char *buf
= rs
->buf
;
1679 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1681 if (ptid_equal (state
, ptid
))
1685 *buf
++ = gen
? 'g' : 'c';
1686 if (ptid_equal (ptid
, magic_null_ptid
))
1687 xsnprintf (buf
, endbuf
- buf
, "0");
1688 else if (ptid_equal (ptid
, any_thread_ptid
))
1689 xsnprintf (buf
, endbuf
- buf
, "0");
1690 else if (ptid_equal (ptid
, minus_one_ptid
))
1691 xsnprintf (buf
, endbuf
- buf
, "-1");
1693 write_ptid (buf
, endbuf
, ptid
);
1695 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1697 general_thread
= ptid
;
1699 continue_thread
= ptid
;
1703 set_general_thread (struct ptid ptid
)
1705 set_thread (ptid
, 1);
1709 set_continue_thread (struct ptid ptid
)
1711 set_thread (ptid
, 0);
1714 /* Change the remote current process. Which thread within the process
1715 ends up selected isn't important, as long as it is the same process
1716 as what INFERIOR_PTID points to.
1718 This comes from that fact that there is no explicit notion of
1719 "selected process" in the protocol. The selected process for
1720 general operations is the process the selected general thread
1724 set_general_process (void)
1726 struct remote_state
*rs
= get_remote_state ();
1728 /* If the remote can't handle multiple processes, don't bother. */
1729 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1732 /* We only need to change the remote current thread if it's pointing
1733 at some other process. */
1734 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1735 set_general_thread (inferior_ptid
);
1739 /* Return nonzero if the thread PTID is still alive on the remote
1743 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1745 struct remote_state
*rs
= get_remote_state ();
1748 if (ptid_equal (ptid
, magic_null_ptid
))
1749 /* The main thread is always alive. */
1752 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1753 /* The main thread is always alive. This can happen after a
1754 vAttach, if the remote side doesn't support
1759 endp
= rs
->buf
+ get_remote_packet_size ();
1762 write_ptid (p
, endp
, ptid
);
1765 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1766 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1769 /* About these extended threadlist and threadinfo packets. They are
1770 variable length packets but, the fields within them are often fixed
1771 length. They are redundent enough to send over UDP as is the
1772 remote protocol in general. There is a matching unit test module
1775 #define OPAQUETHREADBYTES 8
1777 /* a 64 bit opaque identifier */
1778 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1780 /* WARNING: This threadref data structure comes from the remote O.S.,
1781 libstub protocol encoding, and remote.c. It is not particularly
1784 /* Right now, the internal structure is int. We want it to be bigger.
1785 Plan to fix this. */
1787 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1789 /* gdb_ext_thread_info is an internal GDB data structure which is
1790 equivalent to the reply of the remote threadinfo packet. */
1792 struct gdb_ext_thread_info
1794 threadref threadid
; /* External form of thread reference. */
1795 int active
; /* Has state interesting to GDB?
1797 char display
[256]; /* Brief state display, name,
1798 blocked/suspended. */
1799 char shortname
[32]; /* To be used to name threads. */
1800 char more_display
[256]; /* Long info, statistics, queue depth,
1804 /* The volume of remote transfers can be limited by submitting
1805 a mask containing bits specifying the desired information.
1806 Use a union of these values as the 'selection' parameter to
1807 get_thread_info. FIXME: Make these TAG names more thread specific. */
1809 #define TAG_THREADID 1
1810 #define TAG_EXISTS 2
1811 #define TAG_DISPLAY 4
1812 #define TAG_THREADNAME 8
1813 #define TAG_MOREDISPLAY 16
1815 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1817 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1819 static char *unpack_nibble (char *buf
, int *val
);
1821 static char *pack_nibble (char *buf
, int nibble
);
1823 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1825 static char *unpack_byte (char *buf
, int *value
);
1827 static char *pack_int (char *buf
, int value
);
1829 static char *unpack_int (char *buf
, int *value
);
1831 static char *unpack_string (char *src
, char *dest
, int length
);
1833 static char *pack_threadid (char *pkt
, threadref
*id
);
1835 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1837 void int_to_threadref (threadref
*id
, int value
);
1839 static int threadref_to_int (threadref
*ref
);
1841 static void copy_threadref (threadref
*dest
, threadref
*src
);
1843 static int threadmatch (threadref
*dest
, threadref
*src
);
1845 static char *pack_threadinfo_request (char *pkt
, int mode
,
1848 static int remote_unpack_thread_info_response (char *pkt
,
1849 threadref
*expectedref
,
1850 struct gdb_ext_thread_info
1854 static int remote_get_threadinfo (threadref
*threadid
,
1855 int fieldset
, /*TAG mask */
1856 struct gdb_ext_thread_info
*info
);
1858 static char *pack_threadlist_request (char *pkt
, int startflag
,
1860 threadref
*nextthread
);
1862 static int parse_threadlist_response (char *pkt
,
1864 threadref
*original_echo
,
1865 threadref
*resultlist
,
1868 static int remote_get_threadlist (int startflag
,
1869 threadref
*nextthread
,
1873 threadref
*threadlist
);
1875 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1877 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1878 void *context
, int looplimit
);
1880 static int remote_newthread_step (threadref
*ref
, void *context
);
1883 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1884 buffer we're allowed to write to. Returns
1885 BUF+CHARACTERS_WRITTEN. */
1888 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1891 struct remote_state
*rs
= get_remote_state ();
1893 if (remote_multi_process_p (rs
))
1895 pid
= ptid_get_pid (ptid
);
1897 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1899 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1901 tid
= ptid_get_tid (ptid
);
1903 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1905 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1910 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1911 passed the last parsed char. Returns null_ptid on error. */
1914 read_ptid (char *buf
, char **obuf
)
1918 ULONGEST pid
= 0, tid
= 0;
1922 /* Multi-process ptid. */
1923 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1925 error (_("invalid remote ptid: %s"), p
);
1928 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1931 return ptid_build (pid
, 0, tid
);
1934 /* No multi-process. Just a tid. */
1935 pp
= unpack_varlen_hex (p
, &tid
);
1937 /* Since the stub is not sending a process id, then default to
1938 what's in inferior_ptid, unless it's null at this point. If so,
1939 then since there's no way to know the pid of the reported
1940 threads, use the magic number. */
1941 if (ptid_equal (inferior_ptid
, null_ptid
))
1942 pid
= ptid_get_pid (magic_null_ptid
);
1944 pid
= ptid_get_pid (inferior_ptid
);
1948 return ptid_build (pid
, 0, tid
);
1951 /* Encode 64 bits in 16 chars of hex. */
1953 static const char hexchars
[] = "0123456789abcdef";
1956 ishex (int ch
, int *val
)
1958 if ((ch
>= 'a') && (ch
<= 'f'))
1960 *val
= ch
- 'a' + 10;
1963 if ((ch
>= 'A') && (ch
<= 'F'))
1965 *val
= ch
- 'A' + 10;
1968 if ((ch
>= '0') && (ch
<= '9'))
1979 if (ch
>= 'a' && ch
<= 'f')
1980 return ch
- 'a' + 10;
1981 if (ch
>= '0' && ch
<= '9')
1983 if (ch
>= 'A' && ch
<= 'F')
1984 return ch
- 'A' + 10;
1989 stub_unpack_int (char *buff
, int fieldlength
)
1996 nibble
= stubhex (*buff
++);
2000 retval
= retval
<< 4;
2006 unpack_varlen_hex (char *buff
, /* packet to parse */
2010 ULONGEST retval
= 0;
2012 while (ishex (*buff
, &nibble
))
2015 retval
= retval
<< 4;
2016 retval
|= nibble
& 0x0f;
2023 unpack_nibble (char *buf
, int *val
)
2025 *val
= fromhex (*buf
++);
2030 pack_nibble (char *buf
, int nibble
)
2032 *buf
++ = hexchars
[(nibble
& 0x0f)];
2037 pack_hex_byte (char *pkt
, int byte
)
2039 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2040 *pkt
++ = hexchars
[(byte
& 0xf)];
2045 unpack_byte (char *buf
, int *value
)
2047 *value
= stub_unpack_int (buf
, 2);
2052 pack_int (char *buf
, int value
)
2054 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2055 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2056 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2057 buf
= pack_hex_byte (buf
, (value
& 0xff));
2062 unpack_int (char *buf
, int *value
)
2064 *value
= stub_unpack_int (buf
, 8);
2068 #if 0 /* Currently unused, uncomment when needed. */
2069 static char *pack_string (char *pkt
, char *string
);
2072 pack_string (char *pkt
, char *string
)
2077 len
= strlen (string
);
2079 len
= 200; /* Bigger than most GDB packets, junk??? */
2080 pkt
= pack_hex_byte (pkt
, len
);
2084 if ((ch
== '\0') || (ch
== '#'))
2085 ch
= '*'; /* Protect encapsulation. */
2090 #endif /* 0 (unused) */
2093 unpack_string (char *src
, char *dest
, int length
)
2102 pack_threadid (char *pkt
, threadref
*id
)
2105 unsigned char *altid
;
2107 altid
= (unsigned char *) id
;
2108 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2110 pkt
= pack_hex_byte (pkt
, *altid
++);
2116 unpack_threadid (char *inbuf
, threadref
*id
)
2119 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2122 altref
= (char *) id
;
2124 while (inbuf
< limit
)
2126 x
= stubhex (*inbuf
++);
2127 y
= stubhex (*inbuf
++);
2128 *altref
++ = (x
<< 4) | y
;
2133 /* Externally, threadrefs are 64 bits but internally, they are still
2134 ints. This is due to a mismatch of specifications. We would like
2135 to use 64bit thread references internally. This is an adapter
2139 int_to_threadref (threadref
*id
, int value
)
2141 unsigned char *scan
;
2143 scan
= (unsigned char *) id
;
2149 *scan
++ = (value
>> 24) & 0xff;
2150 *scan
++ = (value
>> 16) & 0xff;
2151 *scan
++ = (value
>> 8) & 0xff;
2152 *scan
++ = (value
& 0xff);
2156 threadref_to_int (threadref
*ref
)
2159 unsigned char *scan
;
2165 value
= (value
<< 8) | ((*scan
++) & 0xff);
2170 copy_threadref (threadref
*dest
, threadref
*src
)
2173 unsigned char *csrc
, *cdest
;
2175 csrc
= (unsigned char *) src
;
2176 cdest
= (unsigned char *) dest
;
2183 threadmatch (threadref
*dest
, threadref
*src
)
2185 /* Things are broken right now, so just assume we got a match. */
2187 unsigned char *srcp
, *destp
;
2189 srcp
= (char *) src
;
2190 destp
= (char *) dest
;
2194 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2201 threadid:1, # always request threadid
2208 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2211 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2213 *pkt
++ = 'q'; /* Info Query */
2214 *pkt
++ = 'P'; /* process or thread info */
2215 pkt
= pack_int (pkt
, mode
); /* mode */
2216 pkt
= pack_threadid (pkt
, id
); /* threadid */
2217 *pkt
= '\0'; /* terminate */
2221 /* These values tag the fields in a thread info response packet. */
2222 /* Tagging the fields allows us to request specific fields and to
2223 add more fields as time goes by. */
2225 #define TAG_THREADID 1 /* Echo the thread identifier. */
2226 #define TAG_EXISTS 2 /* Is this process defined enough to
2227 fetch registers and its stack? */
2228 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2229 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2230 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2234 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2235 struct gdb_ext_thread_info
*info
)
2237 struct remote_state
*rs
= get_remote_state ();
2241 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2244 /* info->threadid = 0; FIXME: implement zero_threadref. */
2246 info
->display
[0] = '\0';
2247 info
->shortname
[0] = '\0';
2248 info
->more_display
[0] = '\0';
2250 /* Assume the characters indicating the packet type have been
2252 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2253 pkt
= unpack_threadid (pkt
, &ref
);
2256 warning (_("Incomplete response to threadinfo request."));
2257 if (!threadmatch (&ref
, expectedref
))
2258 { /* This is an answer to a different request. */
2259 warning (_("ERROR RMT Thread info mismatch."));
2262 copy_threadref (&info
->threadid
, &ref
);
2264 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2266 /* Packets are terminated with nulls. */
2267 while ((pkt
< limit
) && mask
&& *pkt
)
2269 pkt
= unpack_int (pkt
, &tag
); /* tag */
2270 pkt
= unpack_byte (pkt
, &length
); /* length */
2271 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2273 warning (_("ERROR RMT: threadinfo tag mismatch."));
2277 if (tag
== TAG_THREADID
)
2281 warning (_("ERROR RMT: length of threadid is not 16."));
2285 pkt
= unpack_threadid (pkt
, &ref
);
2286 mask
= mask
& ~TAG_THREADID
;
2289 if (tag
== TAG_EXISTS
)
2291 info
->active
= stub_unpack_int (pkt
, length
);
2293 mask
= mask
& ~(TAG_EXISTS
);
2296 warning (_("ERROR RMT: 'exists' length too long."));
2302 if (tag
== TAG_THREADNAME
)
2304 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2305 mask
= mask
& ~TAG_THREADNAME
;
2308 if (tag
== TAG_DISPLAY
)
2310 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2311 mask
= mask
& ~TAG_DISPLAY
;
2314 if (tag
== TAG_MOREDISPLAY
)
2316 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2317 mask
= mask
& ~TAG_MOREDISPLAY
;
2320 warning (_("ERROR RMT: unknown thread info tag."));
2321 break; /* Not a tag we know about. */
2327 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2328 struct gdb_ext_thread_info
*info
)
2330 struct remote_state
*rs
= get_remote_state ();
2333 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2335 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2337 if (rs
->buf
[0] == '\0')
2340 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2345 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2348 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2349 threadref
*nextthread
)
2351 *pkt
++ = 'q'; /* info query packet */
2352 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2353 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2354 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2355 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2360 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2363 parse_threadlist_response (char *pkt
, int result_limit
,
2364 threadref
*original_echo
, threadref
*resultlist
,
2367 struct remote_state
*rs
= get_remote_state ();
2369 int count
, resultcount
, done
;
2372 /* Assume the 'q' and 'M chars have been stripped. */
2373 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2374 /* done parse past here */
2375 pkt
= unpack_byte (pkt
, &count
); /* count field */
2376 pkt
= unpack_nibble (pkt
, &done
);
2377 /* The first threadid is the argument threadid. */
2378 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2379 while ((count
-- > 0) && (pkt
< limit
))
2381 pkt
= unpack_threadid (pkt
, resultlist
++);
2382 if (resultcount
++ >= result_limit
)
2391 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2392 int *done
, int *result_count
, threadref
*threadlist
)
2394 struct remote_state
*rs
= get_remote_state ();
2395 static threadref echo_nextthread
;
2398 /* Trancate result limit to be smaller than the packet size. */
2399 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2400 >= get_remote_packet_size ())
2401 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2403 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2405 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2407 if (*rs
->buf
== '\0')
2411 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2414 if (!threadmatch (&echo_nextthread
, nextthread
))
2416 /* FIXME: This is a good reason to drop the packet. */
2417 /* Possably, there is a duplicate response. */
2419 retransmit immediatly - race conditions
2420 retransmit after timeout - yes
2422 wait for packet, then exit
2424 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2425 return 0; /* I choose simply exiting. */
2427 if (*result_count
<= 0)
2431 warning (_("RMT ERROR : failed to get remote thread list."));
2434 return result
; /* break; */
2436 if (*result_count
> result_limit
)
2439 warning (_("RMT ERROR: threadlist response longer than requested."));
2445 /* This is the interface between remote and threads, remotes upper
2448 /* remote_find_new_threads retrieves the thread list and for each
2449 thread in the list, looks up the thread in GDB's internal list,
2450 adding the thread if it does not already exist. This involves
2451 getting partial thread lists from the remote target so, polling the
2452 quit_flag is required. */
2455 /* About this many threadisds fit in a packet. */
2457 #define MAXTHREADLISTRESULTS 32
2460 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2463 int done
, i
, result_count
;
2467 static threadref nextthread
;
2468 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2473 if (loopcount
++ > looplimit
)
2476 warning (_("Remote fetch threadlist -infinite loop-."));
2479 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2480 &done
, &result_count
, resultthreadlist
))
2485 /* Clear for later iterations. */
2487 /* Setup to resume next batch of thread references, set nextthread. */
2488 if (result_count
>= 1)
2489 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2491 while (result_count
--)
2492 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2499 remote_newthread_step (threadref
*ref
, void *context
)
2501 int pid
= ptid_get_pid (inferior_ptid
);
2502 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2504 if (!in_thread_list (ptid
))
2506 return 1; /* continue iterator */
2509 #define CRAZY_MAX_THREADS 1000
2512 remote_current_thread (ptid_t oldpid
)
2514 struct remote_state
*rs
= get_remote_state ();
2517 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2518 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2519 return read_ptid (&rs
->buf
[2], NULL
);
2524 /* Find new threads for info threads command.
2525 * Original version, using John Metzler's thread protocol.
2529 remote_find_new_threads (void)
2531 remote_threadlist_iterator (remote_newthread_step
, 0,
2535 #if defined(HAVE_LIBEXPAT)
2537 typedef struct thread_item
2543 DEF_VEC_O(thread_item_t
);
2545 struct threads_parsing_context
2547 VEC (thread_item_t
) *items
;
2551 start_thread (struct gdb_xml_parser
*parser
,
2552 const struct gdb_xml_element
*element
,
2553 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2555 struct threads_parsing_context
*data
= user_data
;
2557 struct thread_item item
;
2559 struct gdb_xml_value
*attr
;
2561 id
= xml_find_attribute (attributes
, "id")->value
;
2562 item
.ptid
= read_ptid (id
, NULL
);
2564 attr
= xml_find_attribute (attributes
, "core");
2566 item
.core
= *(ULONGEST
*) attr
->value
;
2572 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2576 end_thread (struct gdb_xml_parser
*parser
,
2577 const struct gdb_xml_element
*element
,
2578 void *user_data
, const char *body_text
)
2580 struct threads_parsing_context
*data
= user_data
;
2582 if (body_text
&& *body_text
)
2583 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2586 const struct gdb_xml_attribute thread_attributes
[] = {
2587 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2588 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2589 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2592 const struct gdb_xml_element thread_children
[] = {
2593 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2596 const struct gdb_xml_element threads_children
[] = {
2597 { "thread", thread_attributes
, thread_children
,
2598 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2599 start_thread
, end_thread
},
2600 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2603 const struct gdb_xml_element threads_elements
[] = {
2604 { "threads", NULL
, threads_children
,
2605 GDB_XML_EF_NONE
, NULL
, NULL
},
2606 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2609 /* Discard the contents of the constructed thread info context. */
2612 clear_threads_parsing_context (void *p
)
2614 struct threads_parsing_context
*context
= p
;
2616 struct thread_item
*item
;
2618 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2619 xfree (item
->extra
);
2621 VEC_free (thread_item_t
, context
->items
);
2627 * Find all threads for info threads command.
2628 * Uses new thread protocol contributed by Cisco.
2629 * Falls back and attempts to use the older method (above)
2630 * if the target doesn't respond to the new method.
2634 remote_threads_info (struct target_ops
*ops
)
2636 struct remote_state
*rs
= get_remote_state ();
2640 if (remote_desc
== 0) /* paranoia */
2641 error (_("Command can only be used when connected to the remote target."));
2643 #if defined(HAVE_LIBEXPAT)
2644 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2646 char *xml
= target_read_stralloc (¤t_target
,
2647 TARGET_OBJECT_THREADS
, NULL
);
2649 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2653 struct threads_parsing_context context
;
2655 context
.items
= NULL
;
2656 make_cleanup (clear_threads_parsing_context
, &context
);
2658 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2659 threads_elements
, xml
, &context
) == 0)
2662 struct thread_item
*item
;
2665 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2668 if (!ptid_equal (item
->ptid
, null_ptid
))
2670 struct private_thread_info
*info
;
2671 /* In non-stop mode, we assume new found threads
2672 are running until proven otherwise with a
2673 stop reply. In all-stop, we can only get
2674 here if all threads are stopped. */
2675 int running
= non_stop
? 1 : 0;
2677 remote_notice_new_inferior (item
->ptid
, running
);
2679 info
= demand_private_info (item
->ptid
);
2680 info
->core
= item
->core
;
2681 info
->extra
= item
->extra
;
2688 do_cleanups (back_to
);
2693 if (use_threadinfo_query
)
2695 putpkt ("qfThreadInfo");
2696 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2698 if (bufp
[0] != '\0') /* q packet recognized */
2700 while (*bufp
++ == 'm') /* reply contains one or more TID */
2704 new_thread
= read_ptid (bufp
, &bufp
);
2705 if (!ptid_equal (new_thread
, null_ptid
))
2707 /* In non-stop mode, we assume new found threads
2708 are running until proven otherwise with a
2709 stop reply. In all-stop, we can only get
2710 here if all threads are stopped. */
2711 int running
= non_stop
? 1 : 0;
2713 remote_notice_new_inferior (new_thread
, running
);
2716 while (*bufp
++ == ','); /* comma-separated list */
2717 putpkt ("qsThreadInfo");
2718 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2725 /* Only qfThreadInfo is supported in non-stop mode. */
2729 /* Else fall back to old method based on jmetzler protocol. */
2730 use_threadinfo_query
= 0;
2731 remote_find_new_threads ();
2736 * Collect a descriptive string about the given thread.
2737 * The target may say anything it wants to about the thread
2738 * (typically info about its blocked / runnable state, name, etc.).
2739 * This string will appear in the info threads display.
2741 * Optional: targets are not required to implement this function.
2745 remote_threads_extra_info (struct thread_info
*tp
)
2747 struct remote_state
*rs
= get_remote_state ();
2751 struct gdb_ext_thread_info threadinfo
;
2752 static char display_buf
[100]; /* arbitrary... */
2753 int n
= 0; /* position in display_buf */
2755 if (remote_desc
== 0) /* paranoia */
2756 internal_error (__FILE__
, __LINE__
,
2757 _("remote_threads_extra_info"));
2759 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2760 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2761 /* This is the main thread which was added by GDB. The remote
2762 server doesn't know about it. */
2765 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2767 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2769 if (info
&& info
->private)
2770 return info
->private->extra
;
2775 if (use_threadextra_query
)
2778 char *endb
= rs
->buf
+ get_remote_packet_size ();
2780 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2782 write_ptid (b
, endb
, tp
->ptid
);
2785 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2786 if (rs
->buf
[0] != 0)
2788 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2789 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2790 display_buf
[result
] = '\0';
2795 /* If the above query fails, fall back to the old method. */
2796 use_threadextra_query
= 0;
2797 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2798 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2799 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2800 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2801 if (threadinfo
.active
)
2803 if (*threadinfo
.shortname
)
2804 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2805 " Name: %s,", threadinfo
.shortname
);
2806 if (*threadinfo
.display
)
2807 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2808 " State: %s,", threadinfo
.display
);
2809 if (*threadinfo
.more_display
)
2810 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2811 " Priority: %s", threadinfo
.more_display
);
2815 /* For purely cosmetic reasons, clear up trailing commas. */
2816 if (',' == display_buf
[n
-1])
2817 display_buf
[n
-1] = ' ';
2826 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2827 struct static_tracepoint_marker
*marker
)
2829 struct remote_state
*rs
= get_remote_state ();
2832 sprintf (p
, "qTSTMat:");
2834 p
+= hexnumstr (p
, addr
);
2836 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2840 error (_("Remote failure reply: %s"), p
);
2844 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2852 free_current_marker (void *arg
)
2854 struct static_tracepoint_marker
**marker_p
= arg
;
2856 if (*marker_p
!= NULL
)
2858 release_static_tracepoint_marker (*marker_p
);
2865 static VEC(static_tracepoint_marker_p
) *
2866 remote_static_tracepoint_markers_by_strid (const char *strid
)
2868 struct remote_state
*rs
= get_remote_state ();
2869 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2870 struct static_tracepoint_marker
*marker
= NULL
;
2871 struct cleanup
*old_chain
;
2874 /* Ask for a first packet of static tracepoint marker
2877 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2880 error (_("Remote failure reply: %s"), p
);
2882 old_chain
= make_cleanup (free_current_marker
, &marker
);
2887 marker
= XCNEW (struct static_tracepoint_marker
);
2891 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2893 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2895 VEC_safe_push (static_tracepoint_marker_p
,
2901 release_static_tracepoint_marker (marker
);
2902 memset (marker
, 0, sizeof (*marker
));
2905 while (*p
++ == ','); /* comma-separated list */
2906 /* Ask for another packet of static tracepoint definition. */
2908 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2912 do_cleanups (old_chain
);
2917 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2920 remote_get_ada_task_ptid (long lwp
, long thread
)
2922 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2926 /* Restart the remote side; this is an extended protocol operation. */
2929 extended_remote_restart (void)
2931 struct remote_state
*rs
= get_remote_state ();
2933 /* Send the restart command; for reasons I don't understand the
2934 remote side really expects a number after the "R". */
2935 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2938 remote_fileio_reset ();
2941 /* Clean up connection to a remote debugger. */
2944 remote_close (int quitting
)
2946 if (remote_desc
== NULL
)
2947 return; /* already closed */
2949 /* Make sure we leave stdin registered in the event loop, and we
2950 don't leave the async SIGINT signal handler installed. */
2951 remote_terminal_ours ();
2953 serial_close (remote_desc
);
2956 /* We don't have a connection to the remote stub anymore. Get rid
2957 of all the inferiors and their threads we were controlling.
2958 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
2959 will be unable to find the thread corresponding to (pid, 0, 0). */
2960 inferior_ptid
= null_ptid
;
2961 discard_all_inferiors ();
2963 /* We're no longer interested in any of these events. */
2964 discard_pending_stop_replies (-1);
2966 if (remote_async_inferior_event_token
)
2967 delete_async_event_handler (&remote_async_inferior_event_token
);
2968 if (remote_async_get_pending_events_token
)
2969 delete_async_event_handler (&remote_async_get_pending_events_token
);
2972 /* Query the remote side for the text, data and bss offsets. */
2977 struct remote_state
*rs
= get_remote_state ();
2980 int lose
, num_segments
= 0, do_sections
, do_segments
;
2981 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2982 struct section_offsets
*offs
;
2983 struct symfile_segment_data
*data
;
2985 if (symfile_objfile
== NULL
)
2988 putpkt ("qOffsets");
2989 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2992 if (buf
[0] == '\000')
2993 return; /* Return silently. Stub doesn't support
2997 warning (_("Remote failure reply: %s"), buf
);
3001 /* Pick up each field in turn. This used to be done with scanf, but
3002 scanf will make trouble if CORE_ADDR size doesn't match
3003 conversion directives correctly. The following code will work
3004 with any size of CORE_ADDR. */
3005 text_addr
= data_addr
= bss_addr
= 0;
3009 if (strncmp (ptr
, "Text=", 5) == 0)
3012 /* Don't use strtol, could lose on big values. */
3013 while (*ptr
&& *ptr
!= ';')
3014 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3016 if (strncmp (ptr
, ";Data=", 6) == 0)
3019 while (*ptr
&& *ptr
!= ';')
3020 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3025 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3028 while (*ptr
&& *ptr
!= ';')
3029 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3031 if (bss_addr
!= data_addr
)
3032 warning (_("Target reported unsupported offsets: %s"), buf
);
3037 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3040 /* Don't use strtol, could lose on big values. */
3041 while (*ptr
&& *ptr
!= ';')
3042 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3045 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3048 while (*ptr
&& *ptr
!= ';')
3049 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3057 error (_("Malformed response to offset query, %s"), buf
);
3058 else if (*ptr
!= '\0')
3059 warning (_("Target reported unsupported offsets: %s"), buf
);
3061 offs
= ((struct section_offsets
*)
3062 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3063 memcpy (offs
, symfile_objfile
->section_offsets
,
3064 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3066 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3067 do_segments
= (data
!= NULL
);
3068 do_sections
= num_segments
== 0;
3070 if (num_segments
> 0)
3072 segments
[0] = text_addr
;
3073 segments
[1] = data_addr
;
3075 /* If we have two segments, we can still try to relocate everything
3076 by assuming that the .text and .data offsets apply to the whole
3077 text and data segments. Convert the offsets given in the packet
3078 to base addresses for symfile_map_offsets_to_segments. */
3079 else if (data
&& data
->num_segments
== 2)
3081 segments
[0] = data
->segment_bases
[0] + text_addr
;
3082 segments
[1] = data
->segment_bases
[1] + data_addr
;
3085 /* If the object file has only one segment, assume that it is text
3086 rather than data; main programs with no writable data are rare,
3087 but programs with no code are useless. Of course the code might
3088 have ended up in the data segment... to detect that we would need
3089 the permissions here. */
3090 else if (data
&& data
->num_segments
== 1)
3092 segments
[0] = data
->segment_bases
[0] + text_addr
;
3095 /* There's no way to relocate by segment. */
3101 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3102 offs
, num_segments
, segments
);
3104 if (ret
== 0 && !do_sections
)
3105 error (_("Can not handle qOffsets TextSeg "
3106 "response with this symbol file"));
3113 free_symfile_segment_data (data
);
3117 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3119 /* This is a temporary kludge to force data and bss to use the
3120 same offsets because that's what nlmconv does now. The real
3121 solution requires changes to the stub and remote.c that I
3122 don't have time to do right now. */
3124 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3125 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3128 objfile_relocate (symfile_objfile
, offs
);
3131 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3132 threads we know are stopped already. This is used during the
3133 initial remote connection in non-stop mode --- threads that are
3134 reported as already being stopped are left stopped. */
3137 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3139 /* If we have a stop reply for this thread, it must be stopped. */
3140 if (peek_stop_reply (thread
->ptid
))
3141 set_stop_requested (thread
->ptid
, 1);
3146 /* Send interrupt_sequence to remote target. */
3148 send_interrupt_sequence (void)
3150 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3151 serial_write (remote_desc
, "\x03", 1);
3152 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3153 serial_send_break (remote_desc
);
3154 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3156 serial_send_break (remote_desc
);
3157 serial_write (remote_desc
, "g", 1);
3160 internal_error (__FILE__
, __LINE__
,
3161 _("Invalid value for interrupt_sequence_mode: %s."),
3162 interrupt_sequence_mode
);
3165 /* Query the remote target for which is the current thread/process,
3166 add it to our tables, and update INFERIOR_PTID. The caller is
3167 responsible for setting the state such that the remote end is ready
3168 to return the current thread. */
3171 add_current_inferior_and_thread (void)
3173 struct remote_state
*rs
= get_remote_state ();
3177 inferior_ptid
= null_ptid
;
3179 /* Now, if we have thread information, update inferior_ptid. */
3180 ptid
= remote_current_thread (inferior_ptid
);
3181 if (!ptid_equal (ptid
, null_ptid
))
3183 if (!remote_multi_process_p (rs
))
3186 inferior_ptid
= ptid
;
3190 /* Without this, some commands which require an active target
3191 (such as kill) won't work. This variable serves (at least)
3192 double duty as both the pid of the target process (if it has
3193 such), and as a flag indicating that a target is active. */
3194 inferior_ptid
= magic_null_ptid
;
3198 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3200 /* Add the main thread. */
3201 add_thread_silent (inferior_ptid
);
3205 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3207 struct remote_state
*rs
= get_remote_state ();
3208 struct packet_config
*noack_config
;
3209 char *wait_status
= NULL
;
3211 immediate_quit
++; /* Allow user to interrupt it. */
3213 if (interrupt_on_connect
)
3214 send_interrupt_sequence ();
3216 /* Ack any packet which the remote side has already sent. */
3217 serial_write (remote_desc
, "+", 1);
3219 /* The first packet we send to the target is the optional "supported
3220 packets" request. If the target can answer this, it will tell us
3221 which later probes to skip. */
3222 remote_query_supported ();
3224 /* If the stub wants to get a QAllow, compose one and send it. */
3225 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3226 remote_set_permissions ();
3228 /* Next, we possibly activate noack mode.
3230 If the QStartNoAckMode packet configuration is set to AUTO,
3231 enable noack mode if the stub reported a wish for it with
3234 If set to TRUE, then enable noack mode even if the stub didn't
3235 report it in qSupported. If the stub doesn't reply OK, the
3236 session ends with an error.
3238 If FALSE, then don't activate noack mode, regardless of what the
3239 stub claimed should be the default with qSupported. */
3241 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3243 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3244 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3245 && noack_config
->support
== PACKET_ENABLE
))
3247 putpkt ("QStartNoAckMode");
3248 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3249 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3255 /* Tell the remote that we are using the extended protocol. */
3257 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3260 /* Next, if the target can specify a description, read it. We do
3261 this before anything involving memory or registers. */
3262 target_find_description ();
3264 /* Next, now that we know something about the target, update the
3265 address spaces in the program spaces. */
3266 update_address_spaces ();
3268 /* On OSs where the list of libraries is global to all
3269 processes, we fetch them early. */
3270 if (gdbarch_has_global_solist (target_gdbarch
))
3271 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3275 if (!rs
->non_stop_aware
)
3276 error (_("Non-stop mode requested, but remote "
3277 "does not support non-stop"));
3279 putpkt ("QNonStop:1");
3280 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3282 if (strcmp (rs
->buf
, "OK") != 0)
3283 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3285 /* Find about threads and processes the stub is already
3286 controlling. We default to adding them in the running state.
3287 The '?' query below will then tell us about which threads are
3289 remote_threads_info (target
);
3291 else if (rs
->non_stop_aware
)
3293 /* Don't assume that the stub can operate in all-stop mode.
3294 Request it explicitely. */
3295 putpkt ("QNonStop:0");
3296 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3298 if (strcmp (rs
->buf
, "OK") != 0)
3299 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3302 /* Check whether the target is running now. */
3304 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3310 struct inferior
*inf
;
3312 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3315 error (_("The target is not running (try extended-remote?)"));
3317 /* We're connected, but not running. Drop out before we
3318 call start_remote. */
3323 /* Save the reply for later. */
3324 wait_status
= alloca (strlen (rs
->buf
) + 1);
3325 strcpy (wait_status
, rs
->buf
);
3328 /* Let the stub know that we want it to return the thread. */
3329 set_continue_thread (minus_one_ptid
);
3331 add_current_inferior_and_thread ();
3333 /* init_wait_for_inferior should be called before get_offsets in order
3334 to manage `inserted' flag in bp loc in a correct state.
3335 breakpoint_init_inferior, called from init_wait_for_inferior, set
3336 `inserted' flag to 0, while before breakpoint_re_set, called from
3337 start_remote, set `inserted' flag to 1. In the initialization of
3338 inferior, breakpoint_init_inferior should be called first, and then
3339 breakpoint_re_set can be called. If this order is broken, state of
3340 `inserted' flag is wrong, and cause some problems on breakpoint
3342 init_wait_for_inferior ();
3344 get_offsets (); /* Get text, data & bss offsets. */
3346 /* If we could not find a description using qXfer, and we know
3347 how to do it some other way, try again. This is not
3348 supported for non-stop; it could be, but it is tricky if
3349 there are no stopped threads when we connect. */
3350 if (remote_read_description_p (target
)
3351 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3353 target_clear_description ();
3354 target_find_description ();
3357 /* Use the previously fetched status. */
3358 gdb_assert (wait_status
!= NULL
);
3359 strcpy (rs
->buf
, wait_status
);
3360 rs
->cached_wait_status
= 1;
3363 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3367 /* Clear WFI global state. Do this before finding about new
3368 threads and inferiors, and setting the current inferior.
3369 Otherwise we would clear the proceed status of the current
3370 inferior when we want its stop_soon state to be preserved
3371 (see notice_new_inferior). */
3372 init_wait_for_inferior ();
3374 /* In non-stop, we will either get an "OK", meaning that there
3375 are no stopped threads at this time; or, a regular stop
3376 reply. In the latter case, there may be more than one thread
3377 stopped --- we pull them all out using the vStopped
3379 if (strcmp (rs
->buf
, "OK") != 0)
3381 struct stop_reply
*stop_reply
;
3382 struct cleanup
*old_chain
;
3384 stop_reply
= stop_reply_xmalloc ();
3385 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3387 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3388 discard_cleanups (old_chain
);
3390 /* get_pending_stop_replies acks this one, and gets the rest
3392 pending_stop_reply
= stop_reply
;
3393 remote_get_pending_stop_replies ();
3395 /* Make sure that threads that were stopped remain
3397 iterate_over_threads (set_stop_requested_callback
, NULL
);
3400 if (target_can_async_p ())
3401 target_async (inferior_event_handler
, 0);
3403 if (thread_count () == 0)
3406 error (_("The target is not running (try extended-remote?)"));
3408 /* We're connected, but not running. Drop out before we
3409 call start_remote. */
3413 /* Let the stub know that we want it to return the thread. */
3415 /* Force the stub to choose a thread. */
3416 set_general_thread (null_ptid
);
3419 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3420 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3421 error (_("remote didn't report the current thread in non-stop mode"));
3423 get_offsets (); /* Get text, data & bss offsets. */
3425 /* In non-stop mode, any cached wait status will be stored in
3426 the stop reply queue. */
3427 gdb_assert (wait_status
== NULL
);
3429 /* Report all signals during attach/startup. */
3430 remote_pass_signals (0, NULL
);
3433 /* If we connected to a live target, do some additional setup. */
3434 if (target_has_execution
)
3436 if (exec_bfd
) /* No use without an exec file. */
3437 remote_check_symbols (symfile_objfile
);
3440 /* Possibly the target has been engaged in a trace run started
3441 previously; find out where things are at. */
3442 if (remote_get_trace_status (current_trace_status ()) != -1)
3444 struct uploaded_tp
*uploaded_tps
= NULL
;
3445 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3447 if (current_trace_status ()->running
)
3448 printf_filtered (_("Trace is already running on the target.\n"));
3450 /* Get trace state variables first, they may be checked when
3451 parsing uploaded commands. */
3453 remote_upload_trace_state_variables (&uploaded_tsvs
);
3455 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3457 remote_upload_tracepoints (&uploaded_tps
);
3459 merge_uploaded_tracepoints (&uploaded_tps
);
3462 /* If breakpoints are global, insert them now. */
3463 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3464 && breakpoints_always_inserted_mode ())
3465 insert_breakpoints ();
3468 /* Open a connection to a remote debugger.
3469 NAME is the filename used for communication. */
3472 remote_open (char *name
, int from_tty
)
3474 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3477 /* Open a connection to a remote debugger using the extended
3478 remote gdb protocol. NAME is the filename used for communication. */
3481 extended_remote_open (char *name
, int from_tty
)
3483 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3486 /* Generic code for opening a connection to a remote target. */
3489 init_all_packet_configs (void)
3493 for (i
= 0; i
< PACKET_MAX
; i
++)
3494 update_packet_config (&remote_protocol_packets
[i
]);
3497 /* Symbol look-up. */
3500 remote_check_symbols (struct objfile
*objfile
)
3502 struct remote_state
*rs
= get_remote_state ();
3503 char *msg
, *reply
, *tmp
;
3504 struct minimal_symbol
*sym
;
3507 /* The remote side has no concept of inferiors that aren't running
3508 yet, it only knows about running processes. If we're connected
3509 but our current inferior is not running, we should not invite the
3510 remote target to request symbol lookups related to its
3511 (unrelated) current process. */
3512 if (!target_has_execution
)
3515 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3518 /* Make sure the remote is pointing at the right process. Note
3519 there's no way to select "no process". */
3520 set_general_process ();
3522 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3523 because we need both at the same time. */
3524 msg
= alloca (get_remote_packet_size ());
3526 /* Invite target to request symbol lookups. */
3528 putpkt ("qSymbol::");
3529 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3530 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3533 while (strncmp (reply
, "qSymbol:", 8) == 0)
3536 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3538 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3540 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3543 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3544 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3546 /* If this is a function address, return the start of code
3547 instead of any data function descriptor. */
3548 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3552 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3553 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3557 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3562 static struct serial
*
3563 remote_serial_open (char *name
)
3565 static int udp_warning
= 0;
3567 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3568 of in ser-tcp.c, because it is the remote protocol assuming that the
3569 serial connection is reliable and not the serial connection promising
3571 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3573 warning (_("The remote protocol may be unreliable over UDP.\n"
3574 "Some events may be lost, rendering further debugging "
3579 return serial_open (name
);
3582 /* Inform the target of our permission settings. The permission flags
3583 work without this, but if the target knows the settings, it can do
3584 a couple things. First, it can add its own check, to catch cases
3585 that somehow manage to get by the permissions checks in target
3586 methods. Second, if the target is wired to disallow particular
3587 settings (for instance, a system in the field that is not set up to
3588 be able to stop at a breakpoint), it can object to any unavailable
3592 remote_set_permissions (void)
3594 struct remote_state
*rs
= get_remote_state ();
3596 sprintf (rs
->buf
, "QAllow:"
3597 "WriteReg:%x;WriteMem:%x;"
3598 "InsertBreak:%x;InsertTrace:%x;"
3599 "InsertFastTrace:%x;Stop:%x",
3600 may_write_registers
, may_write_memory
,
3601 may_insert_breakpoints
, may_insert_tracepoints
,
3602 may_insert_fast_tracepoints
, may_stop
);
3604 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3606 /* If the target didn't like the packet, warn the user. Do not try
3607 to undo the user's settings, that would just be maddening. */
3608 if (strcmp (rs
->buf
, "OK") != 0)
3609 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3612 /* This type describes each known response to the qSupported
3614 struct protocol_feature
3616 /* The name of this protocol feature. */
3619 /* The default for this protocol feature. */
3620 enum packet_support default_support
;
3622 /* The function to call when this feature is reported, or after
3623 qSupported processing if the feature is not supported.
3624 The first argument points to this structure. The second
3625 argument indicates whether the packet requested support be
3626 enabled, disabled, or probed (or the default, if this function
3627 is being called at the end of processing and this feature was
3628 not reported). The third argument may be NULL; if not NULL, it
3629 is a NUL-terminated string taken from the packet following
3630 this feature's name and an equals sign. */
3631 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3634 /* The corresponding packet for this feature. Only used if
3635 FUNC is remote_supported_packet. */
3640 remote_supported_packet (const struct protocol_feature
*feature
,
3641 enum packet_support support
,
3642 const char *argument
)
3646 warning (_("Remote qSupported response supplied an unexpected value for"
3647 " \"%s\"."), feature
->name
);
3651 if (remote_protocol_packets
[feature
->packet
].support
3652 == PACKET_SUPPORT_UNKNOWN
)
3653 remote_protocol_packets
[feature
->packet
].support
= support
;
3657 remote_packet_size (const struct protocol_feature
*feature
,
3658 enum packet_support support
, const char *value
)
3660 struct remote_state
*rs
= get_remote_state ();
3665 if (support
!= PACKET_ENABLE
)
3668 if (value
== NULL
|| *value
== '\0')
3670 warning (_("Remote target reported \"%s\" without a size."),
3676 packet_size
= strtol (value
, &value_end
, 16);
3677 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3679 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3680 feature
->name
, value
);
3684 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3686 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3687 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3688 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3691 /* Record the new maximum packet size. */
3692 rs
->explicit_packet_size
= packet_size
;
3696 remote_multi_process_feature (const struct protocol_feature
*feature
,
3697 enum packet_support support
, const char *value
)
3699 struct remote_state
*rs
= get_remote_state ();
3701 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3705 remote_non_stop_feature (const struct protocol_feature
*feature
,
3706 enum packet_support support
, const char *value
)
3708 struct remote_state
*rs
= get_remote_state ();
3710 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3714 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3715 enum packet_support support
,
3718 struct remote_state
*rs
= get_remote_state ();
3720 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3724 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3725 enum packet_support support
,
3728 struct remote_state
*rs
= get_remote_state ();
3730 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3734 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3735 enum packet_support support
,
3738 struct remote_state
*rs
= get_remote_state ();
3740 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3744 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3745 enum packet_support support
,
3748 struct remote_state
*rs
= get_remote_state ();
3750 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3754 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3755 enum packet_support support
,
3758 struct remote_state
*rs
= get_remote_state ();
3760 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3764 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3765 enum packet_support support
,
3768 struct remote_state
*rs
= get_remote_state ();
3770 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3774 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3775 enum packet_support support
,
3778 struct remote_state
*rs
= get_remote_state ();
3780 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3784 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3785 enum packet_support support
,
3788 struct remote_state
*rs
= get_remote_state ();
3790 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3793 static struct protocol_feature remote_protocol_features
[] = {
3794 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3795 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3796 PACKET_qXfer_auxv
},
3797 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3798 PACKET_qXfer_features
},
3799 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3800 PACKET_qXfer_libraries
},
3801 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3802 PACKET_qXfer_libraries_svr4
},
3803 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3804 PACKET_qXfer_memory_map
},
3805 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3806 PACKET_qXfer_spu_read
},
3807 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3808 PACKET_qXfer_spu_write
},
3809 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3810 PACKET_qXfer_osdata
},
3811 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3812 PACKET_qXfer_threads
},
3813 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3814 PACKET_qXfer_traceframe_info
},
3815 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3816 PACKET_QPassSignals
},
3817 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3818 PACKET_QStartNoAckMode
},
3819 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3820 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3821 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3822 PACKET_qXfer_siginfo_read
},
3823 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3824 PACKET_qXfer_siginfo_write
},
3825 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3826 PACKET_ConditionalTracepoints
},
3827 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3828 PACKET_ConditionalBreakpoints
},
3829 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3830 PACKET_FastTracepoints
},
3831 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3832 PACKET_StaticTracepoints
},
3833 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3834 PACKET_InstallInTrace
},
3835 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3837 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3839 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3841 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3842 PACKET_TracepointSource
},
3843 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3845 { "EnableDisableTracepoints", PACKET_DISABLE
,
3846 remote_enable_disable_tracepoint_feature
, -1 },
3847 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3848 PACKET_qXfer_fdpic
},
3849 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3850 PACKET_QDisableRandomization
},
3851 { "tracenz", PACKET_DISABLE
,
3852 remote_string_tracing_feature
, -1 },
3855 static char *remote_support_xml
;
3857 /* Register string appended to "xmlRegisters=" in qSupported query. */
3860 register_remote_support_xml (const char *xml
)
3862 #if defined(HAVE_LIBEXPAT)
3863 if (remote_support_xml
== NULL
)
3864 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3867 char *copy
= xstrdup (remote_support_xml
+ 13);
3868 char *p
= strtok (copy
, ",");
3872 if (strcmp (p
, xml
) == 0)
3879 while ((p
= strtok (NULL
, ",")) != NULL
);
3882 remote_support_xml
= reconcat (remote_support_xml
,
3883 remote_support_xml
, ",", xml
,
3890 remote_query_supported_append (char *msg
, const char *append
)
3893 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3895 return xstrdup (append
);
3899 remote_query_supported (void)
3901 struct remote_state
*rs
= get_remote_state ();
3904 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3906 /* The packet support flags are handled differently for this packet
3907 than for most others. We treat an error, a disabled packet, and
3908 an empty response identically: any features which must be reported
3909 to be used will be automatically disabled. An empty buffer
3910 accomplishes this, since that is also the representation for a list
3911 containing no features. */
3914 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3917 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3919 q
= remote_query_supported_append (q
, "multiprocess+");
3921 if (remote_support_xml
)
3922 q
= remote_query_supported_append (q
, remote_support_xml
);
3924 q
= remote_query_supported_append (q
, "qRelocInsn+");
3926 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
3929 do_cleanups (old_chain
);
3931 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3933 /* If an error occured, warn, but do not return - just reset the
3934 buffer to empty and go on to disable features. */
3935 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3938 warning (_("Remote failure reply: %s"), rs
->buf
);
3943 memset (seen
, 0, sizeof (seen
));
3948 enum packet_support is_supported
;
3949 char *p
, *end
, *name_end
, *value
;
3951 /* First separate out this item from the rest of the packet. If
3952 there's another item after this, we overwrite the separator
3953 (terminated strings are much easier to work with). */
3955 end
= strchr (p
, ';');
3958 end
= p
+ strlen (p
);
3968 warning (_("empty item in \"qSupported\" response"));
3973 name_end
= strchr (p
, '=');
3976 /* This is a name=value entry. */
3977 is_supported
= PACKET_ENABLE
;
3978 value
= name_end
+ 1;
3987 is_supported
= PACKET_ENABLE
;
3991 is_supported
= PACKET_DISABLE
;
3995 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3999 warning (_("unrecognized item \"%s\" "
4000 "in \"qSupported\" response"), p
);
4006 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4007 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4009 const struct protocol_feature
*feature
;
4012 feature
= &remote_protocol_features
[i
];
4013 feature
->func (feature
, is_supported
, value
);
4018 /* If we increased the packet size, make sure to increase the global
4019 buffer size also. We delay this until after parsing the entire
4020 qSupported packet, because this is the same buffer we were
4022 if (rs
->buf_size
< rs
->explicit_packet_size
)
4024 rs
->buf_size
= rs
->explicit_packet_size
;
4025 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4028 /* Handle the defaults for unmentioned features. */
4029 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4032 const struct protocol_feature
*feature
;
4034 feature
= &remote_protocol_features
[i
];
4035 feature
->func (feature
, feature
->default_support
, NULL
);
4041 remote_open_1 (char *name
, int from_tty
,
4042 struct target_ops
*target
, int extended_p
)
4044 struct remote_state
*rs
= get_remote_state ();
4047 error (_("To open a remote debug connection, you need to specify what\n"
4048 "serial device is attached to the remote system\n"
4049 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4051 /* See FIXME above. */
4052 if (!target_async_permitted
)
4053 wait_forever_enabled_p
= 1;
4055 /* If we're connected to a running target, target_preopen will kill it.
4056 But if we're connected to a target system with no running process,
4057 then we will still be connected when it returns. Ask this question
4058 first, before target_preopen has a chance to kill anything. */
4059 if (remote_desc
!= NULL
&& !have_inferiors ())
4062 || query (_("Already connected to a remote target. Disconnect? ")))
4065 error (_("Still connected."));
4068 target_preopen (from_tty
);
4070 unpush_target (target
);
4072 /* This time without a query. If we were connected to an
4073 extended-remote target and target_preopen killed the running
4074 process, we may still be connected. If we are starting "target
4075 remote" now, the extended-remote target will not have been
4076 removed by unpush_target. */
4077 if (remote_desc
!= NULL
&& !have_inferiors ())
4080 /* Make sure we send the passed signals list the next time we resume. */
4081 xfree (last_pass_packet
);
4082 last_pass_packet
= NULL
;
4084 remote_fileio_reset ();
4085 reopen_exec_file ();
4088 remote_desc
= remote_serial_open (name
);
4090 perror_with_name (name
);
4092 if (baud_rate
!= -1)
4094 if (serial_setbaudrate (remote_desc
, baud_rate
))
4096 /* The requested speed could not be set. Error out to
4097 top level after closing remote_desc. Take care to
4098 set remote_desc to NULL to avoid closing remote_desc
4100 serial_close (remote_desc
);
4102 perror_with_name (name
);
4106 serial_raw (remote_desc
);
4108 /* If there is something sitting in the buffer we might take it as a
4109 response to a command, which would be bad. */
4110 serial_flush_input (remote_desc
);
4114 puts_filtered ("Remote debugging using ");
4115 puts_filtered (name
);
4116 puts_filtered ("\n");
4118 push_target (target
); /* Switch to using remote target now. */
4120 /* Register extra event sources in the event loop. */
4121 remote_async_inferior_event_token
4122 = create_async_event_handler (remote_async_inferior_event_handler
,
4124 remote_async_get_pending_events_token
4125 = create_async_event_handler (remote_async_get_pending_events_handler
,
4128 /* Reset the target state; these things will be queried either by
4129 remote_query_supported or as they are needed. */
4130 init_all_packet_configs ();
4131 rs
->cached_wait_status
= 0;
4132 rs
->explicit_packet_size
= 0;
4134 rs
->multi_process_aware
= 0;
4135 rs
->extended
= extended_p
;
4136 rs
->non_stop_aware
= 0;
4137 rs
->waiting_for_stop_reply
= 0;
4138 rs
->ctrlc_pending_p
= 0;
4140 general_thread
= not_sent_ptid
;
4141 continue_thread
= not_sent_ptid
;
4142 remote_traceframe_number
= -1;
4144 /* Probe for ability to use "ThreadInfo" query, as required. */
4145 use_threadinfo_query
= 1;
4146 use_threadextra_query
= 1;
4148 if (target_async_permitted
)
4150 /* With this target we start out by owning the terminal. */
4151 remote_async_terminal_ours_p
= 1;
4153 /* FIXME: cagney/1999-09-23: During the initial connection it is
4154 assumed that the target is already ready and able to respond to
4155 requests. Unfortunately remote_start_remote() eventually calls
4156 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4157 around this. Eventually a mechanism that allows
4158 wait_for_inferior() to expect/get timeouts will be
4160 wait_forever_enabled_p
= 0;
4163 /* First delete any symbols previously loaded from shared libraries. */
4164 no_shared_libraries (NULL
, 0);
4167 init_thread_list ();
4169 /* Start the remote connection. If error() or QUIT, discard this
4170 target (we'd otherwise be in an inconsistent state) and then
4171 propogate the error on up the exception chain. This ensures that
4172 the caller doesn't stumble along blindly assuming that the
4173 function succeeded. The CLI doesn't have this problem but other
4174 UI's, such as MI do.
4176 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4177 this function should return an error indication letting the
4178 caller restore the previous state. Unfortunately the command
4179 ``target remote'' is directly wired to this function making that
4180 impossible. On a positive note, the CLI side of this problem has
4181 been fixed - the function set_cmd_context() makes it possible for
4182 all the ``target ....'' commands to share a common callback
4183 function. See cli-dump.c. */
4185 volatile struct gdb_exception ex
;
4187 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4189 remote_start_remote (from_tty
, target
, extended_p
);
4193 /* Pop the partially set up target - unless something else did
4194 already before throwing the exception. */
4195 if (remote_desc
!= NULL
)
4197 if (target_async_permitted
)
4198 wait_forever_enabled_p
= 1;
4199 throw_exception (ex
);
4203 if (target_async_permitted
)
4204 wait_forever_enabled_p
= 1;
4207 /* This takes a program previously attached to and detaches it. After
4208 this is done, GDB can be used to debug some other program. We
4209 better not have left any breakpoints in the target program or it'll
4210 die when it hits one. */
4213 remote_detach_1 (char *args
, int from_tty
, int extended
)
4215 int pid
= ptid_get_pid (inferior_ptid
);
4216 struct remote_state
*rs
= get_remote_state ();
4219 error (_("Argument given to \"detach\" when remotely debugging."));
4221 if (!target_has_execution
)
4222 error (_("No process to detach from."));
4226 char *exec_file
= get_exec_file (0);
4227 if (exec_file
== NULL
)
4229 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4230 target_pid_to_str (pid_to_ptid (pid
)));
4231 gdb_flush (gdb_stdout
);
4234 /* Tell the remote target to detach. */
4235 if (remote_multi_process_p (rs
))
4236 sprintf (rs
->buf
, "D;%x", pid
);
4238 strcpy (rs
->buf
, "D");
4241 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4243 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4245 else if (rs
->buf
[0] == '\0')
4246 error (_("Remote doesn't know how to detach"));
4248 error (_("Can't detach process."));
4250 if (from_tty
&& !extended
)
4251 puts_filtered (_("Ending remote debugging.\n"));
4253 discard_pending_stop_replies (pid
);
4254 target_mourn_inferior ();
4258 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4260 remote_detach_1 (args
, from_tty
, 0);
4264 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4266 remote_detach_1 (args
, from_tty
, 1);
4269 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4272 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4275 error (_("Argument given to \"disconnect\" when remotely debugging."));
4277 /* Make sure we unpush even the extended remote targets; mourn
4278 won't do it. So call remote_mourn_1 directly instead of
4279 target_mourn_inferior. */
4280 remote_mourn_1 (target
);
4283 puts_filtered ("Ending remote debugging.\n");
4286 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4287 be chatty about it. */
4290 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4292 struct remote_state
*rs
= get_remote_state ();
4294 char *wait_status
= NULL
;
4296 pid
= parse_pid_to_attach (args
);
4298 /* Remote PID can be freely equal to getpid, do not check it here the same
4299 way as in other targets. */
4301 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4302 error (_("This target does not support attaching to a process"));
4306 char *exec_file
= get_exec_file (0);
4309 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4310 target_pid_to_str (pid_to_ptid (pid
)));
4312 printf_unfiltered (_("Attaching to %s\n"),
4313 target_pid_to_str (pid_to_ptid (pid
)));
4315 gdb_flush (gdb_stdout
);
4318 sprintf (rs
->buf
, "vAttach;%x", pid
);
4320 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4322 if (packet_ok (rs
->buf
,
4323 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4327 /* Save the reply for later. */
4328 wait_status
= alloca (strlen (rs
->buf
) + 1);
4329 strcpy (wait_status
, rs
->buf
);
4331 else if (strcmp (rs
->buf
, "OK") != 0)
4332 error (_("Attaching to %s failed with: %s"),
4333 target_pid_to_str (pid_to_ptid (pid
)),
4336 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4337 error (_("This target does not support attaching to a process"));
4339 error (_("Attaching to %s failed"),
4340 target_pid_to_str (pid_to_ptid (pid
)));
4342 set_current_inferior (remote_add_inferior (0, pid
, 1));
4344 inferior_ptid
= pid_to_ptid (pid
);
4348 struct thread_info
*thread
;
4350 /* Get list of threads. */
4351 remote_threads_info (target
);
4353 thread
= first_thread_of_process (pid
);
4355 inferior_ptid
= thread
->ptid
;
4357 inferior_ptid
= pid_to_ptid (pid
);
4359 /* Invalidate our notion of the remote current thread. */
4360 record_currthread (minus_one_ptid
);
4364 /* Now, if we have thread information, update inferior_ptid. */
4365 inferior_ptid
= remote_current_thread (inferior_ptid
);
4367 /* Add the main thread to the thread list. */
4368 add_thread_silent (inferior_ptid
);
4371 /* Next, if the target can specify a description, read it. We do
4372 this before anything involving memory or registers. */
4373 target_find_description ();
4377 /* Use the previously fetched status. */
4378 gdb_assert (wait_status
!= NULL
);
4380 if (target_can_async_p ())
4382 struct stop_reply
*stop_reply
;
4383 struct cleanup
*old_chain
;
4385 stop_reply
= stop_reply_xmalloc ();
4386 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4387 remote_parse_stop_reply (wait_status
, stop_reply
);
4388 discard_cleanups (old_chain
);
4389 push_stop_reply (stop_reply
);
4391 target_async (inferior_event_handler
, 0);
4395 gdb_assert (wait_status
!= NULL
);
4396 strcpy (rs
->buf
, wait_status
);
4397 rs
->cached_wait_status
= 1;
4401 gdb_assert (wait_status
== NULL
);
4405 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4407 extended_remote_attach_1 (ops
, args
, from_tty
);
4410 /* Convert hex digit A to a number. */
4415 if (a
>= '0' && a
<= '9')
4417 else if (a
>= 'a' && a
<= 'f')
4418 return a
- 'a' + 10;
4419 else if (a
>= 'A' && a
<= 'F')
4420 return a
- 'A' + 10;
4422 error (_("Reply contains invalid hex digit %d"), a
);
4426 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4430 for (i
= 0; i
< count
; i
++)
4432 if (hex
[0] == 0 || hex
[1] == 0)
4434 /* Hex string is short, or of uneven length.
4435 Return the count that has been converted so far. */
4438 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4444 /* Convert number NIB to a hex digit. */
4452 return 'a' + nib
- 10;
4456 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4460 /* May use a length, or a nul-terminated string as input. */
4462 count
= strlen ((char *) bin
);
4464 for (i
= 0; i
< count
; i
++)
4466 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4467 *hex
++ = tohex (*bin
++ & 0xf);
4473 /* Check for the availability of vCont. This function should also check
4477 remote_vcont_probe (struct remote_state
*rs
)
4481 strcpy (rs
->buf
, "vCont?");
4483 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4486 /* Make sure that the features we assume are supported. */
4487 if (strncmp (buf
, "vCont", 5) == 0)
4490 int support_s
, support_S
, support_c
, support_C
;
4496 rs
->support_vCont_t
= 0;
4497 while (p
&& *p
== ';')
4500 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4502 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4504 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4506 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4508 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4509 rs
->support_vCont_t
= 1;
4511 p
= strchr (p
, ';');
4514 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4515 BUF will make packet_ok disable the packet. */
4516 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4520 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4523 /* Helper function for building "vCont" resumptions. Write a
4524 resumption to P. ENDP points to one-passed-the-end of the buffer
4525 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4526 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4527 resumed thread should be single-stepped and/or signalled. If PTID
4528 equals minus_one_ptid, then all threads are resumed; if PTID
4529 represents a process, then all threads of the process are resumed;
4530 the thread to be stepped and/or signalled is given in the global
4534 append_resumption (char *p
, char *endp
,
4535 ptid_t ptid
, int step
, enum target_signal siggnal
)
4537 struct remote_state
*rs
= get_remote_state ();
4539 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4540 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4542 p
+= xsnprintf (p
, endp
- p
, ";s");
4543 else if (siggnal
!= TARGET_SIGNAL_0
)
4544 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4546 p
+= xsnprintf (p
, endp
- p
, ";c");
4548 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4552 /* All (-1) threads of process. */
4553 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4555 p
+= xsnprintf (p
, endp
- p
, ":");
4556 p
= write_ptid (p
, endp
, nptid
);
4558 else if (!ptid_equal (ptid
, minus_one_ptid
))
4560 p
+= xsnprintf (p
, endp
- p
, ":");
4561 p
= write_ptid (p
, endp
, ptid
);
4567 /* Resume the remote inferior by using a "vCont" packet. The thread
4568 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4569 resumed thread should be single-stepped and/or signalled. If PTID
4570 equals minus_one_ptid, then all threads are resumed; the thread to
4571 be stepped and/or signalled is given in the global INFERIOR_PTID.
4572 This function returns non-zero iff it resumes the inferior.
4574 This function issues a strict subset of all possible vCont commands at the
4578 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4580 struct remote_state
*rs
= get_remote_state ();
4584 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4585 remote_vcont_probe (rs
);
4587 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4591 endp
= rs
->buf
+ get_remote_packet_size ();
4593 /* If we could generate a wider range of packets, we'd have to worry
4594 about overflowing BUF. Should there be a generic
4595 "multi-part-packet" packet? */
4597 p
+= xsnprintf (p
, endp
- p
, "vCont");
4599 if (ptid_equal (ptid
, magic_null_ptid
))
4601 /* MAGIC_NULL_PTID means that we don't have any active threads,
4602 so we don't have any TID numbers the inferior will
4603 understand. Make sure to only send forms that do not specify
4605 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4607 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4609 /* Resume all threads (of all processes, or of a single
4610 process), with preference for INFERIOR_PTID. This assumes
4611 inferior_ptid belongs to the set of all threads we are about
4613 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4615 /* Step inferior_ptid, with or without signal. */
4616 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4619 /* And continue others without a signal. */
4620 append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4624 /* Scheduler locking; resume only PTID. */
4625 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4628 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4633 /* In non-stop, the stub replies to vCont with "OK". The stop
4634 reply will be reported asynchronously by means of a `%Stop'
4636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4637 if (strcmp (rs
->buf
, "OK") != 0)
4638 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4644 /* Tell the remote machine to resume. */
4646 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4648 static int last_sent_step
;
4651 remote_resume (struct target_ops
*ops
,
4652 ptid_t ptid
, int step
, enum target_signal siggnal
)
4654 struct remote_state
*rs
= get_remote_state ();
4657 last_sent_signal
= siggnal
;
4658 last_sent_step
= step
;
4660 /* The vCont packet doesn't need to specify threads via Hc. */
4661 /* No reverse support (yet) for vCont. */
4662 if (execution_direction
!= EXEC_REVERSE
)
4663 if (remote_vcont_resume (ptid
, step
, siggnal
))
4666 /* All other supported resume packets do use Hc, so set the continue
4668 if (ptid_equal (ptid
, minus_one_ptid
))
4669 set_continue_thread (any_thread_ptid
);
4671 set_continue_thread (ptid
);
4674 if (execution_direction
== EXEC_REVERSE
)
4676 /* We don't pass signals to the target in reverse exec mode. */
4677 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4678 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4682 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4683 error (_("Remote reverse-step not supported."));
4685 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4686 error (_("Remote reverse-continue not supported."));
4688 strcpy (buf
, step
? "bs" : "bc");
4690 else if (siggnal
!= TARGET_SIGNAL_0
)
4692 buf
[0] = step
? 'S' : 'C';
4693 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4694 buf
[2] = tohex (((int) siggnal
) & 0xf);
4698 strcpy (buf
, step
? "s" : "c");
4703 /* We are about to start executing the inferior, let's register it
4704 with the event loop. NOTE: this is the one place where all the
4705 execution commands end up. We could alternatively do this in each
4706 of the execution commands in infcmd.c. */
4707 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4708 into infcmd.c in order to allow inferior function calls to work
4709 NOT asynchronously. */
4710 if (target_can_async_p ())
4711 target_async (inferior_event_handler
, 0);
4713 /* We've just told the target to resume. The remote server will
4714 wait for the inferior to stop, and then send a stop reply. In
4715 the mean time, we can't start another command/query ourselves
4716 because the stub wouldn't be ready to process it. This applies
4717 only to the base all-stop protocol, however. In non-stop (which
4718 only supports vCont), the stub replies with an "OK", and is
4719 immediate able to process further serial input. */
4721 rs
->waiting_for_stop_reply
= 1;
4725 /* Set up the signal handler for SIGINT, while the target is
4726 executing, ovewriting the 'regular' SIGINT signal handler. */
4728 initialize_sigint_signal_handler (void)
4730 signal (SIGINT
, handle_remote_sigint
);
4733 /* Signal handler for SIGINT, while the target is executing. */
4735 handle_remote_sigint (int sig
)
4737 signal (sig
, handle_remote_sigint_twice
);
4738 mark_async_signal_handler_wrapper (sigint_remote_token
);
4741 /* Signal handler for SIGINT, installed after SIGINT has already been
4742 sent once. It will take effect the second time that the user sends
4745 handle_remote_sigint_twice (int sig
)
4747 signal (sig
, handle_remote_sigint
);
4748 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4751 /* Perform the real interruption of the target execution, in response
4754 async_remote_interrupt (gdb_client_data arg
)
4757 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4759 target_stop (inferior_ptid
);
4762 /* Perform interrupt, if the first attempt did not succeed. Just give
4763 up on the target alltogether. */
4765 async_remote_interrupt_twice (gdb_client_data arg
)
4768 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4773 /* Reinstall the usual SIGINT handlers, after the target has
4776 cleanup_sigint_signal_handler (void *dummy
)
4778 signal (SIGINT
, handle_sigint
);
4781 /* Send ^C to target to halt it. Target will respond, and send us a
4783 static void (*ofunc
) (int);
4785 /* The command line interface's stop routine. This function is installed
4786 as a signal handler for SIGINT. The first time a user requests a
4787 stop, we call remote_stop to send a break or ^C. If there is no
4788 response from the target (it didn't stop when the user requested it),
4789 we ask the user if he'd like to detach from the target. */
4791 remote_interrupt (int signo
)
4793 /* If this doesn't work, try more severe steps. */
4794 signal (signo
, remote_interrupt_twice
);
4796 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4799 /* The user typed ^C twice. */
4802 remote_interrupt_twice (int signo
)
4804 signal (signo
, ofunc
);
4805 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4806 signal (signo
, remote_interrupt
);
4809 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4810 thread, all threads of a remote process, or all threads of all
4814 remote_stop_ns (ptid_t ptid
)
4816 struct remote_state
*rs
= get_remote_state ();
4818 char *endp
= rs
->buf
+ get_remote_packet_size ();
4820 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4821 remote_vcont_probe (rs
);
4823 if (!rs
->support_vCont_t
)
4824 error (_("Remote server does not support stopping threads"));
4826 if (ptid_equal (ptid
, minus_one_ptid
)
4827 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4828 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4833 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4835 if (ptid_is_pid (ptid
))
4836 /* All (-1) threads of process. */
4837 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4840 /* Small optimization: if we already have a stop reply for
4841 this thread, no use in telling the stub we want this
4843 if (peek_stop_reply (ptid
))
4849 write_ptid (p
, endp
, nptid
);
4852 /* In non-stop, we get an immediate OK reply. The stop reply will
4853 come in asynchronously by notification. */
4855 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4856 if (strcmp (rs
->buf
, "OK") != 0)
4857 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4860 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4861 remote target. It is undefined which thread of which process
4862 reports the stop. */
4865 remote_stop_as (ptid_t ptid
)
4867 struct remote_state
*rs
= get_remote_state ();
4869 rs
->ctrlc_pending_p
= 1;
4871 /* If the inferior is stopped already, but the core didn't know
4872 about it yet, just ignore the request. The cached wait status
4873 will be collected in remote_wait. */
4874 if (rs
->cached_wait_status
)
4877 /* Send interrupt_sequence to remote target. */
4878 send_interrupt_sequence ();
4881 /* This is the generic stop called via the target vector. When a target
4882 interrupt is requested, either by the command line or the GUI, we
4883 will eventually end up here. */
4886 remote_stop (ptid_t ptid
)
4889 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4892 remote_stop_ns (ptid
);
4894 remote_stop_as (ptid
);
4897 /* Ask the user what to do when an interrupt is received. */
4900 interrupt_query (void)
4902 target_terminal_ours ();
4904 if (target_can_async_p ())
4906 signal (SIGINT
, handle_sigint
);
4907 deprecated_throw_reason (RETURN_QUIT
);
4911 if (query (_("Interrupted while waiting for the program.\n\
4912 Give up (and stop debugging it)? ")))
4915 deprecated_throw_reason (RETURN_QUIT
);
4919 target_terminal_inferior ();
4922 /* Enable/disable target terminal ownership. Most targets can use
4923 terminal groups to control terminal ownership. Remote targets are
4924 different in that explicit transfer of ownership to/from GDB/target
4928 remote_terminal_inferior (void)
4930 if (!target_async_permitted
)
4931 /* Nothing to do. */
4934 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4935 idempotent. The event-loop GDB talking to an asynchronous target
4936 with a synchronous command calls this function from both
4937 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4938 transfer the terminal to the target when it shouldn't this guard
4940 if (!remote_async_terminal_ours_p
)
4942 delete_file_handler (input_fd
);
4943 remote_async_terminal_ours_p
= 0;
4944 initialize_sigint_signal_handler ();
4945 /* NOTE: At this point we could also register our selves as the
4946 recipient of all input. Any characters typed could then be
4947 passed on down to the target. */
4951 remote_terminal_ours (void)
4953 if (!target_async_permitted
)
4954 /* Nothing to do. */
4957 /* See FIXME in remote_terminal_inferior. */
4958 if (remote_async_terminal_ours_p
)
4960 cleanup_sigint_signal_handler (NULL
);
4961 add_file_handler (input_fd
, stdin_event_handler
, 0);
4962 remote_async_terminal_ours_p
= 1;
4966 remote_console_output (char *msg
)
4970 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4973 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4977 fputs_unfiltered (tb
, gdb_stdtarg
);
4979 gdb_flush (gdb_stdtarg
);
4982 typedef struct cached_reg
4985 gdb_byte data
[MAX_REGISTER_SIZE
];
4988 DEF_VEC_O(cached_reg_t
);
4992 struct stop_reply
*next
;
4996 struct target_waitstatus ws
;
4998 /* Expedited registers. This makes remote debugging a bit more
4999 efficient for those targets that provide critical registers as
5000 part of their normal status mechanism (as another roundtrip to
5001 fetch them is avoided). */
5002 VEC(cached_reg_t
) *regcache
;
5004 int stopped_by_watchpoint_p
;
5005 CORE_ADDR watch_data_address
;
5013 /* The list of already fetched and acknowledged stop events. */
5014 static struct stop_reply
*stop_reply_queue
;
5016 static struct stop_reply
*
5017 stop_reply_xmalloc (void)
5019 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
5026 stop_reply_xfree (struct stop_reply
*r
)
5030 VEC_free (cached_reg_t
, r
->regcache
);
5035 /* Discard all pending stop replies of inferior PID. If PID is -1,
5036 discard everything. */
5039 discard_pending_stop_replies (int pid
)
5041 struct stop_reply
*prev
= NULL
, *reply
, *next
;
5043 /* Discard the in-flight notification. */
5044 if (pending_stop_reply
!= NULL
5046 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
5048 stop_reply_xfree (pending_stop_reply
);
5049 pending_stop_reply
= NULL
;
5052 /* Discard the stop replies we have already pulled with
5054 for (reply
= stop_reply_queue
; reply
; reply
= next
)
5058 || ptid_get_pid (reply
->ptid
) == pid
)
5060 if (reply
== stop_reply_queue
)
5061 stop_reply_queue
= reply
->next
;
5063 prev
->next
= reply
->next
;
5065 stop_reply_xfree (reply
);
5072 /* Cleanup wrapper. */
5075 do_stop_reply_xfree (void *arg
)
5077 struct stop_reply
*r
= arg
;
5079 stop_reply_xfree (r
);
5082 /* Look for a queued stop reply belonging to PTID. If one is found,
5083 remove it from the queue, and return it. Returns NULL if none is
5084 found. If there are still queued events left to process, tell the
5085 event loop to get back to target_wait soon. */
5087 static struct stop_reply
*
5088 queued_stop_reply (ptid_t ptid
)
5090 struct stop_reply
*it
;
5091 struct stop_reply
**it_link
;
5093 it
= stop_reply_queue
;
5094 it_link
= &stop_reply_queue
;
5097 if (ptid_match (it
->ptid
, ptid
))
5099 *it_link
= it
->next
;
5104 it_link
= &it
->next
;
5108 if (stop_reply_queue
)
5109 /* There's still at least an event left. */
5110 mark_async_event_handler (remote_async_inferior_event_token
);
5115 /* Push a fully parsed stop reply in the stop reply queue. Since we
5116 know that we now have at least one queued event left to pass to the
5117 core side, tell the event loop to get back to target_wait soon. */
5120 push_stop_reply (struct stop_reply
*new_event
)
5122 struct stop_reply
*event
;
5124 if (stop_reply_queue
)
5126 for (event
= stop_reply_queue
;
5127 event
&& event
->next
;
5128 event
= event
->next
)
5131 event
->next
= new_event
;
5134 stop_reply_queue
= new_event
;
5136 mark_async_event_handler (remote_async_inferior_event_token
);
5139 /* Returns true if we have a stop reply for PTID. */
5142 peek_stop_reply (ptid_t ptid
)
5144 struct stop_reply
*it
;
5146 for (it
= stop_reply_queue
; it
; it
= it
->next
)
5147 if (ptid_equal (ptid
, it
->ptid
))
5149 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5156 /* Parse the stop reply in BUF. Either the function succeeds, and the
5157 result is stored in EVENT, or throws an error. */
5160 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5162 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5166 event
->ptid
= null_ptid
;
5167 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5168 event
->ws
.value
.integer
= 0;
5169 event
->solibs_changed
= 0;
5170 event
->replay_event
= 0;
5171 event
->stopped_by_watchpoint_p
= 0;
5172 event
->regcache
= NULL
;
5177 case 'T': /* Status with PC, SP, FP, ... */
5178 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5179 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5181 n... = register number
5182 r... = register contents
5185 p
= &buf
[3]; /* after Txx */
5193 /* If the packet contains a register number, save it in
5194 pnum and set p1 to point to the character following it.
5195 Otherwise p1 points to p. */
5197 /* If this packet is an awatch packet, don't parse the 'a'
5198 as a register number. */
5200 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5201 && strncmp (p
, "core", strlen ("core") != 0))
5203 /* Read the ``P'' register number. */
5204 pnum
= strtol (p
, &p_temp
, 16);
5210 if (p1
== p
) /* No register number present here. */
5212 p1
= strchr (p
, ':');
5214 error (_("Malformed packet(a) (missing colon): %s\n\
5217 if (strncmp (p
, "thread", p1
- p
) == 0)
5218 event
->ptid
= read_ptid (++p1
, &p
);
5219 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5220 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5221 || (strncmp (p
, "awatch", p1
- p
) == 0))
5223 event
->stopped_by_watchpoint_p
= 1;
5224 p
= unpack_varlen_hex (++p1
, &addr
);
5225 event
->watch_data_address
= (CORE_ADDR
) addr
;
5227 else if (strncmp (p
, "library", p1
- p
) == 0)
5231 while (*p_temp
&& *p_temp
!= ';')
5234 event
->solibs_changed
= 1;
5237 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5239 /* NO_HISTORY event.
5240 p1 will indicate "begin" or "end", but
5241 it makes no difference for now, so ignore it. */
5242 event
->replay_event
= 1;
5243 p_temp
= strchr (p1
+ 1, ';');
5247 else if (strncmp (p
, "core", p1
- p
) == 0)
5251 p
= unpack_varlen_hex (++p1
, &c
);
5256 /* Silently skip unknown optional info. */
5257 p_temp
= strchr (p1
+ 1, ';');
5264 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5265 cached_reg_t cached_reg
;
5270 error (_("Malformed packet(b) (missing colon): %s\n\
5276 error (_("Remote sent bad register number %s: %s\n\
5278 hex_string (pnum
), p
, buf
);
5280 cached_reg
.num
= reg
->regnum
;
5282 fieldsize
= hex2bin (p
, cached_reg
.data
,
5283 register_size (target_gdbarch
,
5286 if (fieldsize
< register_size (target_gdbarch
,
5288 warning (_("Remote reply is too short: %s"), buf
);
5290 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5294 error (_("Remote register badly formatted: %s\nhere: %s"),
5299 case 'S': /* Old style status, just signal only. */
5300 if (event
->solibs_changed
)
5301 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5302 else if (event
->replay_event
)
5303 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5306 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5307 event
->ws
.value
.sig
= (enum target_signal
)
5308 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5311 case 'W': /* Target exited. */
5318 /* GDB used to accept only 2 hex chars here. Stubs should
5319 only send more if they detect GDB supports multi-process
5321 p
= unpack_varlen_hex (&buf
[1], &value
);
5325 /* The remote process exited. */
5326 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5327 event
->ws
.value
.integer
= value
;
5331 /* The remote process exited with a signal. */
5332 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5333 event
->ws
.value
.sig
= (enum target_signal
) value
;
5336 /* If no process is specified, assume inferior_ptid. */
5337 pid
= ptid_get_pid (inferior_ptid
);
5346 else if (strncmp (p
,
5347 "process:", sizeof ("process:") - 1) == 0)
5351 p
+= sizeof ("process:") - 1;
5352 unpack_varlen_hex (p
, &upid
);
5356 error (_("unknown stop reply packet: %s"), buf
);
5359 error (_("unknown stop reply packet: %s"), buf
);
5360 event
->ptid
= pid_to_ptid (pid
);
5365 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5366 error (_("No process or thread specified in stop reply: %s"), buf
);
5369 /* When the stub wants to tell GDB about a new stop reply, it sends a
5370 stop notification (%Stop). Those can come it at any time, hence,
5371 we have to make sure that any pending putpkt/getpkt sequence we're
5372 making is finished, before querying the stub for more events with
5373 vStopped. E.g., if we started a vStopped sequence immediatelly
5374 upon receiving the %Stop notification, something like this could
5382 1.6) <-- (registers reply to step #1.3)
5384 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5387 To solve this, whenever we parse a %Stop notification sucessfully,
5388 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5389 doing whatever we were doing:
5395 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5396 2.5) <-- (registers reply to step #2.3)
5398 Eventualy after step #2.5, we return to the event loop, which
5399 notices there's an event on the
5400 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5401 associated callback --- the function below. At this point, we're
5402 always safe to start a vStopped sequence. :
5405 2.7) <-- T05 thread:2
5411 remote_get_pending_stop_replies (void)
5413 struct remote_state
*rs
= get_remote_state ();
5415 if (pending_stop_reply
)
5418 putpkt ("vStopped");
5420 /* Now we can rely on it. */
5421 push_stop_reply (pending_stop_reply
);
5422 pending_stop_reply
= NULL
;
5426 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5427 if (strcmp (rs
->buf
, "OK") == 0)
5431 struct cleanup
*old_chain
;
5432 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5434 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5435 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5438 putpkt ("vStopped");
5440 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5442 /* Now we can rely on it. */
5443 discard_cleanups (old_chain
);
5444 push_stop_reply (stop_reply
);
5447 /* We got an unknown stop reply. */
5448 do_cleanups (old_chain
);
5455 /* Called when it is decided that STOP_REPLY holds the info of the
5456 event that is to be returned to the core. This function always
5457 destroys STOP_REPLY. */
5460 process_stop_reply (struct stop_reply
*stop_reply
,
5461 struct target_waitstatus
*status
)
5465 *status
= stop_reply
->ws
;
5466 ptid
= stop_reply
->ptid
;
5468 /* If no thread/process was reported by the stub, assume the current
5470 if (ptid_equal (ptid
, null_ptid
))
5471 ptid
= inferior_ptid
;
5473 if (status
->kind
!= TARGET_WAITKIND_EXITED
5474 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5476 /* Expedited registers. */
5477 if (stop_reply
->regcache
)
5479 struct regcache
*regcache
5480 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5485 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5487 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5488 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5491 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5492 remote_watch_data_address
= stop_reply
->watch_data_address
;
5494 remote_notice_new_inferior (ptid
, 0);
5495 demand_private_info (ptid
)->core
= stop_reply
->core
;
5498 stop_reply_xfree (stop_reply
);
5502 /* The non-stop mode version of target_wait. */
5505 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5507 struct remote_state
*rs
= get_remote_state ();
5508 struct stop_reply
*stop_reply
;
5511 /* If in non-stop mode, get out of getpkt even if a
5512 notification is received. */
5514 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5521 case 'E': /* Error of some sort. */
5522 /* We're out of sync with the target now. Did it continue
5523 or not? We can't tell which thread it was in non-stop,
5524 so just ignore this. */
5525 warning (_("Remote failure reply: %s"), rs
->buf
);
5527 case 'O': /* Console output. */
5528 remote_console_output (rs
->buf
+ 1);
5531 warning (_("Invalid remote reply: %s"), rs
->buf
);
5535 /* Acknowledge a pending stop reply that may have arrived in the
5537 if (pending_stop_reply
!= NULL
)
5538 remote_get_pending_stop_replies ();
5540 /* If indeed we noticed a stop reply, we're done. */
5541 stop_reply
= queued_stop_reply (ptid
);
5542 if (stop_reply
!= NULL
)
5543 return process_stop_reply (stop_reply
, status
);
5545 /* Still no event. If we're just polling for an event, then
5546 return to the event loop. */
5547 if (options
& TARGET_WNOHANG
)
5549 status
->kind
= TARGET_WAITKIND_IGNORE
;
5550 return minus_one_ptid
;
5553 /* Otherwise do a blocking wait. */
5554 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5559 /* Wait until the remote machine stops, then return, storing status in
5560 STATUS just as `wait' would. */
5563 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5565 struct remote_state
*rs
= get_remote_state ();
5566 ptid_t event_ptid
= null_ptid
;
5568 struct stop_reply
*stop_reply
;
5572 status
->kind
= TARGET_WAITKIND_IGNORE
;
5573 status
->value
.integer
= 0;
5575 stop_reply
= queued_stop_reply (ptid
);
5576 if (stop_reply
!= NULL
)
5577 return process_stop_reply (stop_reply
, status
);
5579 if (rs
->cached_wait_status
)
5580 /* Use the cached wait status, but only once. */
5581 rs
->cached_wait_status
= 0;
5586 if (!target_is_async_p ())
5588 ofunc
= signal (SIGINT
, remote_interrupt
);
5589 /* If the user hit C-c before this packet, or between packets,
5590 pretend that it was hit right here. */
5594 remote_interrupt (SIGINT
);
5598 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5599 _never_ wait for ever -> test on target_is_async_p().
5600 However, before we do that we need to ensure that the caller
5601 knows how to take the target into/out of async mode. */
5602 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5603 if (!target_is_async_p ())
5604 signal (SIGINT
, ofunc
);
5609 remote_stopped_by_watchpoint_p
= 0;
5611 /* We got something. */
5612 rs
->waiting_for_stop_reply
= 0;
5614 /* Assume that the target has acknowledged Ctrl-C unless we receive
5615 an 'F' or 'O' packet. */
5616 if (buf
[0] != 'F' && buf
[0] != 'O')
5617 rs
->ctrlc_pending_p
= 0;
5621 case 'E': /* Error of some sort. */
5622 /* We're out of sync with the target now. Did it continue or
5623 not? Not is more likely, so report a stop. */
5624 warning (_("Remote failure reply: %s"), buf
);
5625 status
->kind
= TARGET_WAITKIND_STOPPED
;
5626 status
->value
.sig
= TARGET_SIGNAL_0
;
5628 case 'F': /* File-I/O request. */
5629 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5630 rs
->ctrlc_pending_p
= 0;
5632 case 'T': case 'S': case 'X': case 'W':
5634 struct stop_reply
*stop_reply
;
5635 struct cleanup
*old_chain
;
5637 stop_reply
= stop_reply_xmalloc ();
5638 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5639 remote_parse_stop_reply (buf
, stop_reply
);
5640 discard_cleanups (old_chain
);
5641 event_ptid
= process_stop_reply (stop_reply
, status
);
5644 case 'O': /* Console output. */
5645 remote_console_output (buf
+ 1);
5647 /* The target didn't really stop; keep waiting. */
5648 rs
->waiting_for_stop_reply
= 1;
5652 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5654 /* Zero length reply means that we tried 'S' or 'C' and the
5655 remote system doesn't support it. */
5656 target_terminal_ours_for_output ();
5658 ("Can't send signals to this remote system. %s not sent.\n",
5659 target_signal_to_name (last_sent_signal
));
5660 last_sent_signal
= TARGET_SIGNAL_0
;
5661 target_terminal_inferior ();
5663 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5664 putpkt ((char *) buf
);
5666 /* We just told the target to resume, so a stop reply is in
5668 rs
->waiting_for_stop_reply
= 1;
5671 /* else fallthrough */
5673 warning (_("Invalid remote reply: %s"), buf
);
5675 rs
->waiting_for_stop_reply
= 1;
5679 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5681 /* Nothing interesting happened. If we're doing a non-blocking
5682 poll, we're done. Otherwise, go back to waiting. */
5683 if (options
& TARGET_WNOHANG
)
5684 return minus_one_ptid
;
5688 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5689 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5691 if (!ptid_equal (event_ptid
, null_ptid
))
5692 record_currthread (event_ptid
);
5694 event_ptid
= inferior_ptid
;
5697 /* A process exit. Invalidate our notion of current thread. */
5698 record_currthread (minus_one_ptid
);
5703 /* Wait until the remote machine stops, then return, storing status in
5704 STATUS just as `wait' would. */
5707 remote_wait (struct target_ops
*ops
,
5708 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5713 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5715 event_ptid
= remote_wait_as (ptid
, status
, options
);
5717 if (target_can_async_p ())
5719 /* If there are are events left in the queue tell the event loop
5721 if (stop_reply_queue
)
5722 mark_async_event_handler (remote_async_inferior_event_token
);
5728 /* Fetch a single register using a 'p' packet. */
5731 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5733 struct remote_state
*rs
= get_remote_state ();
5735 char regp
[MAX_REGISTER_SIZE
];
5738 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5741 if (reg
->pnum
== -1)
5746 p
+= hexnumstr (p
, reg
->pnum
);
5749 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5753 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5757 case PACKET_UNKNOWN
:
5760 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5761 gdbarch_register_name (get_regcache_arch (regcache
),
5766 /* If this register is unfetchable, tell the regcache. */
5769 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5773 /* Otherwise, parse and supply the value. */
5779 error (_("fetch_register_using_p: early buf termination"));
5781 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5784 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5788 /* Fetch the registers included in the target's 'g' packet. */
5791 send_g_packet (void)
5793 struct remote_state
*rs
= get_remote_state ();
5796 sprintf (rs
->buf
, "g");
5797 remote_send (&rs
->buf
, &rs
->buf_size
);
5799 /* We can get out of synch in various cases. If the first character
5800 in the buffer is not a hex character, assume that has happened
5801 and try to fetch another packet to read. */
5802 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5803 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5804 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5805 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5808 fprintf_unfiltered (gdb_stdlog
,
5809 "Bad register packet; fetching a new packet\n");
5810 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5813 buf_len
= strlen (rs
->buf
);
5815 /* Sanity check the received packet. */
5816 if (buf_len
% 2 != 0)
5817 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5823 process_g_packet (struct regcache
*regcache
)
5825 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5826 struct remote_state
*rs
= get_remote_state ();
5827 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5832 buf_len
= strlen (rs
->buf
);
5834 /* Further sanity checks, with knowledge of the architecture. */
5835 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5836 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5838 /* Save the size of the packet sent to us by the target. It is used
5839 as a heuristic when determining the max size of packets that the
5840 target can safely receive. */
5841 if (rsa
->actual_register_packet_size
== 0)
5842 rsa
->actual_register_packet_size
= buf_len
;
5844 /* If this is smaller than we guessed the 'g' packet would be,
5845 update our records. A 'g' reply that doesn't include a register's
5846 value implies either that the register is not available, or that
5847 the 'p' packet must be used. */
5848 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5850 rsa
->sizeof_g_packet
= buf_len
/ 2;
5852 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5854 if (rsa
->regs
[i
].pnum
== -1)
5857 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5858 rsa
->regs
[i
].in_g_packet
= 0;
5860 rsa
->regs
[i
].in_g_packet
= 1;
5864 regs
= alloca (rsa
->sizeof_g_packet
);
5866 /* Unimplemented registers read as all bits zero. */
5867 memset (regs
, 0, rsa
->sizeof_g_packet
);
5869 /* Reply describes registers byte by byte, each byte encoded as two
5870 hex characters. Suck them all up, then supply them to the
5871 register cacheing/storage mechanism. */
5874 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5876 if (p
[0] == 0 || p
[1] == 0)
5877 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5878 internal_error (__FILE__
, __LINE__
,
5879 _("unexpected end of 'g' packet reply"));
5881 if (p
[0] == 'x' && p
[1] == 'x')
5882 regs
[i
] = 0; /* 'x' */
5884 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5888 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5890 struct packet_reg
*r
= &rsa
->regs
[i
];
5894 if (r
->offset
* 2 >= strlen (rs
->buf
))
5895 /* This shouldn't happen - we adjusted in_g_packet above. */
5896 internal_error (__FILE__
, __LINE__
,
5897 _("unexpected end of 'g' packet reply"));
5898 else if (rs
->buf
[r
->offset
* 2] == 'x')
5900 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5901 /* The register isn't available, mark it as such (at
5902 the same time setting the value to zero). */
5903 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5906 regcache_raw_supply (regcache
, r
->regnum
,
5913 fetch_registers_using_g (struct regcache
*regcache
)
5916 process_g_packet (regcache
);
5919 /* Make the remote selected traceframe match GDB's selected
5923 set_remote_traceframe (void)
5927 if (remote_traceframe_number
== get_traceframe_number ())
5930 /* Avoid recursion, remote_trace_find calls us again. */
5931 remote_traceframe_number
= get_traceframe_number ();
5933 newnum
= target_trace_find (tfind_number
,
5934 get_traceframe_number (), 0, 0, NULL
);
5936 /* Should not happen. If it does, all bets are off. */
5937 if (newnum
!= get_traceframe_number ())
5938 warning (_("could not set remote traceframe"));
5942 remote_fetch_registers (struct target_ops
*ops
,
5943 struct regcache
*regcache
, int regnum
)
5945 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5948 set_remote_traceframe ();
5949 set_general_thread (inferior_ptid
);
5953 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5955 gdb_assert (reg
!= NULL
);
5957 /* If this register might be in the 'g' packet, try that first -
5958 we are likely to read more than one register. If this is the
5959 first 'g' packet, we might be overly optimistic about its
5960 contents, so fall back to 'p'. */
5961 if (reg
->in_g_packet
)
5963 fetch_registers_using_g (regcache
);
5964 if (reg
->in_g_packet
)
5968 if (fetch_register_using_p (regcache
, reg
))
5971 /* This register is not available. */
5972 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5977 fetch_registers_using_g (regcache
);
5979 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5980 if (!rsa
->regs
[i
].in_g_packet
)
5981 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5983 /* This register is not available. */
5984 regcache_raw_supply (regcache
, i
, NULL
);
5988 /* Prepare to store registers. Since we may send them all (using a
5989 'G' request), we have to read out the ones we don't want to change
5993 remote_prepare_to_store (struct regcache
*regcache
)
5995 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5997 gdb_byte buf
[MAX_REGISTER_SIZE
];
5999 /* Make sure the entire registers array is valid. */
6000 switch (remote_protocol_packets
[PACKET_P
].support
)
6002 case PACKET_DISABLE
:
6003 case PACKET_SUPPORT_UNKNOWN
:
6004 /* Make sure all the necessary registers are cached. */
6005 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6006 if (rsa
->regs
[i
].in_g_packet
)
6007 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6014 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6015 packet was not recognized. */
6018 store_register_using_P (const struct regcache
*regcache
,
6019 struct packet_reg
*reg
)
6021 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6022 struct remote_state
*rs
= get_remote_state ();
6023 /* Try storing a single register. */
6024 char *buf
= rs
->buf
;
6025 gdb_byte regp
[MAX_REGISTER_SIZE
];
6028 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6031 if (reg
->pnum
== -1)
6034 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6035 p
= buf
+ strlen (buf
);
6036 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6037 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6039 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6041 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6046 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6047 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6048 case PACKET_UNKNOWN
:
6051 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6055 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6056 contents of the register cache buffer. FIXME: ignores errors. */
6059 store_registers_using_G (const struct regcache
*regcache
)
6061 struct remote_state
*rs
= get_remote_state ();
6062 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6066 /* Extract all the registers in the regcache copying them into a
6071 regs
= alloca (rsa
->sizeof_g_packet
);
6072 memset (regs
, 0, rsa
->sizeof_g_packet
);
6073 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6075 struct packet_reg
*r
= &rsa
->regs
[i
];
6078 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6082 /* Command describes registers byte by byte,
6083 each byte encoded as two hex characters. */
6086 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6088 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6090 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6091 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6092 error (_("Could not write registers; remote failure reply '%s'"),
6096 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6097 of the register cache buffer. FIXME: ignores errors. */
6100 remote_store_registers (struct target_ops
*ops
,
6101 struct regcache
*regcache
, int regnum
)
6103 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6106 set_remote_traceframe ();
6107 set_general_thread (inferior_ptid
);
6111 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6113 gdb_assert (reg
!= NULL
);
6115 /* Always prefer to store registers using the 'P' packet if
6116 possible; we often change only a small number of registers.
6117 Sometimes we change a larger number; we'd need help from a
6118 higher layer to know to use 'G'. */
6119 if (store_register_using_P (regcache
, reg
))
6122 /* For now, don't complain if we have no way to write the
6123 register. GDB loses track of unavailable registers too
6124 easily. Some day, this may be an error. We don't have
6125 any way to read the register, either... */
6126 if (!reg
->in_g_packet
)
6129 store_registers_using_G (regcache
);
6133 store_registers_using_G (regcache
);
6135 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6136 if (!rsa
->regs
[i
].in_g_packet
)
6137 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6138 /* See above for why we do not issue an error here. */
6143 /* Return the number of hex digits in num. */
6146 hexnumlen (ULONGEST num
)
6150 for (i
= 0; num
!= 0; i
++)
6156 /* Set BUF to the minimum number of hex digits representing NUM. */
6159 hexnumstr (char *buf
, ULONGEST num
)
6161 int len
= hexnumlen (num
);
6163 return hexnumnstr (buf
, num
, len
);
6167 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6170 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6176 for (i
= width
- 1; i
>= 0; i
--)
6178 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6185 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6188 remote_address_masked (CORE_ADDR addr
)
6190 int address_size
= remote_address_size
;
6192 /* If "remoteaddresssize" was not set, default to target address size. */
6194 address_size
= gdbarch_addr_bit (target_gdbarch
);
6196 if (address_size
> 0
6197 && address_size
< (sizeof (ULONGEST
) * 8))
6199 /* Only create a mask when that mask can safely be constructed
6200 in a ULONGEST variable. */
6203 mask
= (mask
<< address_size
) - 1;
6209 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6210 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6211 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6212 (which may be more than *OUT_LEN due to escape characters). The
6213 total number of bytes in the output buffer will be at most
6217 remote_escape_output (const gdb_byte
*buffer
, int len
,
6218 gdb_byte
*out_buf
, int *out_len
,
6221 int input_index
, output_index
;
6224 for (input_index
= 0; input_index
< len
; input_index
++)
6226 gdb_byte b
= buffer
[input_index
];
6228 if (b
== '$' || b
== '#' || b
== '}')
6230 /* These must be escaped. */
6231 if (output_index
+ 2 > out_maxlen
)
6233 out_buf
[output_index
++] = '}';
6234 out_buf
[output_index
++] = b
^ 0x20;
6238 if (output_index
+ 1 > out_maxlen
)
6240 out_buf
[output_index
++] = b
;
6244 *out_len
= input_index
;
6245 return output_index
;
6248 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6249 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6250 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6252 This function reverses remote_escape_output. It allows more
6253 escaped characters than that function does, in particular because
6254 '*' must be escaped to avoid the run-length encoding processing
6255 in reading packets. */
6258 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6259 gdb_byte
*out_buf
, int out_maxlen
)
6261 int input_index
, output_index
;
6266 for (input_index
= 0; input_index
< len
; input_index
++)
6268 gdb_byte b
= buffer
[input_index
];
6270 if (output_index
+ 1 > out_maxlen
)
6272 warning (_("Received too much data from remote target;"
6273 " ignoring overflow."));
6274 return output_index
;
6279 out_buf
[output_index
++] = b
^ 0x20;
6285 out_buf
[output_index
++] = b
;
6289 error (_("Unmatched escape character in target response."));
6291 return output_index
;
6294 /* Determine whether the remote target supports binary downloading.
6295 This is accomplished by sending a no-op memory write of zero length
6296 to the target at the specified address. It does not suffice to send
6297 the whole packet, since many stubs strip the eighth bit and
6298 subsequently compute a wrong checksum, which causes real havoc with
6301 NOTE: This can still lose if the serial line is not eight-bit
6302 clean. In cases like this, the user should clear "remote
6306 check_binary_download (CORE_ADDR addr
)
6308 struct remote_state
*rs
= get_remote_state ();
6310 switch (remote_protocol_packets
[PACKET_X
].support
)
6312 case PACKET_DISABLE
:
6316 case PACKET_SUPPORT_UNKNOWN
:
6322 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6324 p
+= hexnumstr (p
, (ULONGEST
) 0);
6328 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6329 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6331 if (rs
->buf
[0] == '\0')
6334 fprintf_unfiltered (gdb_stdlog
,
6335 "binary downloading NOT "
6336 "supported by target\n");
6337 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6342 fprintf_unfiltered (gdb_stdlog
,
6343 "binary downloading supported by target\n");
6344 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6351 /* Write memory data directly to the remote machine.
6352 This does not inform the data cache; the data cache uses this.
6353 HEADER is the starting part of the packet.
6354 MEMADDR is the address in the remote memory space.
6355 MYADDR is the address of the buffer in our space.
6356 LEN is the number of bytes.
6357 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6358 should send data as binary ('X'), or hex-encoded ('M').
6360 The function creates packet of the form
6361 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6363 where encoding of <DATA> is termined by PACKET_FORMAT.
6365 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6368 Returns the number of bytes transferred, or 0 (setting errno) for
6369 error. Only transfer a single packet. */
6372 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6373 const gdb_byte
*myaddr
, int len
,
6374 char packet_format
, int use_length
)
6376 struct remote_state
*rs
= get_remote_state ();
6386 if (packet_format
!= 'X' && packet_format
!= 'M')
6387 internal_error (__FILE__
, __LINE__
,
6388 _("remote_write_bytes_aux: bad packet format"));
6393 payload_size
= get_memory_write_packet_size ();
6395 /* The packet buffer will be large enough for the payload;
6396 get_memory_packet_size ensures this. */
6399 /* Compute the size of the actual payload by subtracting out the
6400 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6402 payload_size
-= strlen ("$,:#NN");
6404 /* The comma won't be used. */
6406 header_length
= strlen (header
);
6407 payload_size
-= header_length
;
6408 payload_size
-= hexnumlen (memaddr
);
6410 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6412 strcat (rs
->buf
, header
);
6413 p
= rs
->buf
+ strlen (header
);
6415 /* Compute a best guess of the number of bytes actually transfered. */
6416 if (packet_format
== 'X')
6418 /* Best guess at number of bytes that will fit. */
6419 todo
= min (len
, payload_size
);
6421 payload_size
-= hexnumlen (todo
);
6422 todo
= min (todo
, payload_size
);
6426 /* Num bytes that will fit. */
6427 todo
= min (len
, payload_size
/ 2);
6429 payload_size
-= hexnumlen (todo
);
6430 todo
= min (todo
, payload_size
/ 2);
6434 internal_error (__FILE__
, __LINE__
,
6435 _("minimum packet size too small to write data"));
6437 /* If we already need another packet, then try to align the end
6438 of this packet to a useful boundary. */
6439 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6440 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6442 /* Append "<memaddr>". */
6443 memaddr
= remote_address_masked (memaddr
);
6444 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6451 /* Append <len>. Retain the location/size of <len>. It may need to
6452 be adjusted once the packet body has been created. */
6454 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6462 /* Append the packet body. */
6463 if (packet_format
== 'X')
6465 /* Binary mode. Send target system values byte by byte, in
6466 increasing byte addresses. Only escape certain critical
6468 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6471 /* If not all TODO bytes fit, then we'll need another packet. Make
6472 a second try to keep the end of the packet aligned. Don't do
6473 this if the packet is tiny. */
6474 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6478 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6480 if (new_nr_bytes
!= nr_bytes
)
6481 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6486 p
+= payload_length
;
6487 if (use_length
&& nr_bytes
< todo
)
6489 /* Escape chars have filled up the buffer prematurely,
6490 and we have actually sent fewer bytes than planned.
6491 Fix-up the length field of the packet. Use the same
6492 number of characters as before. */
6493 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6494 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6499 /* Normal mode: Send target system values byte by byte, in
6500 increasing byte addresses. Each byte is encoded as a two hex
6502 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6506 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6507 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6509 if (rs
->buf
[0] == 'E')
6511 /* There is no correspondance between what the remote protocol
6512 uses for errors and errno codes. We would like a cleaner way
6513 of representing errors (big enough to include errno codes,
6514 bfd_error codes, and others). But for now just return EIO. */
6519 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6520 fewer bytes than we'd planned. */
6524 /* Write memory data directly to the remote machine.
6525 This does not inform the data cache; the data cache uses this.
6526 MEMADDR is the address in the remote memory space.
6527 MYADDR is the address of the buffer in our space.
6528 LEN is the number of bytes.
6530 Returns number of bytes transferred, or 0 (setting errno) for
6531 error. Only transfer a single packet. */
6534 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6536 char *packet_format
= 0;
6538 /* Check whether the target supports binary download. */
6539 check_binary_download (memaddr
);
6541 switch (remote_protocol_packets
[PACKET_X
].support
)
6544 packet_format
= "X";
6546 case PACKET_DISABLE
:
6547 packet_format
= "M";
6549 case PACKET_SUPPORT_UNKNOWN
:
6550 internal_error (__FILE__
, __LINE__
,
6551 _("remote_write_bytes: bad internal state"));
6553 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6556 return remote_write_bytes_aux (packet_format
,
6557 memaddr
, myaddr
, len
, packet_format
[0], 1);
6560 /* Read memory data directly from the remote machine.
6561 This does not use the data cache; the data cache uses this.
6562 MEMADDR is the address in the remote memory space.
6563 MYADDR is the address of the buffer in our space.
6564 LEN is the number of bytes.
6566 Returns number of bytes transferred, or 0 for error. */
6569 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6571 struct remote_state
*rs
= get_remote_state ();
6572 int max_buf_size
; /* Max size of packet output buffer. */
6580 max_buf_size
= get_memory_read_packet_size ();
6581 /* The packet buffer will be large enough for the payload;
6582 get_memory_packet_size ensures this. */
6584 /* Number if bytes that will fit. */
6585 todo
= min (len
, max_buf_size
/ 2);
6587 /* Construct "m"<memaddr>","<len>". */
6588 memaddr
= remote_address_masked (memaddr
);
6591 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6593 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6596 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6597 if (rs
->buf
[0] == 'E'
6598 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6599 && rs
->buf
[3] == '\0')
6601 /* There is no correspondance between what the remote protocol
6602 uses for errors and errno codes. We would like a cleaner way
6603 of representing errors (big enough to include errno codes,
6604 bfd_error codes, and others). But for now just return
6609 /* Reply describes memory byte by byte, each byte encoded as two hex
6612 i
= hex2bin (p
, myaddr
, todo
);
6613 /* Return what we have. Let higher layers handle partial reads. */
6618 /* Remote notification handler. */
6621 handle_notification (char *buf
, size_t length
)
6623 if (strncmp (buf
, "Stop:", 5) == 0)
6625 if (pending_stop_reply
)
6627 /* We've already parsed the in-flight stop-reply, but the
6628 stub for some reason thought we didn't, possibly due to
6629 timeout on its side. Just ignore it. */
6631 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6635 struct cleanup
*old_chain
;
6636 struct stop_reply
*reply
= stop_reply_xmalloc ();
6638 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6640 remote_parse_stop_reply (buf
+ 5, reply
);
6642 discard_cleanups (old_chain
);
6644 /* Be careful to only set it after parsing, since an error
6645 may be thrown then. */
6646 pending_stop_reply
= reply
;
6648 /* Notify the event loop there's a stop reply to acknowledge
6649 and that there may be more events to fetch. */
6650 mark_async_event_handler (remote_async_get_pending_events_token
);
6653 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6657 /* We ignore notifications we don't recognize, for compatibility
6658 with newer stubs. */
6663 /* Read or write LEN bytes from inferior memory at MEMADDR,
6664 transferring to or from debugger address BUFFER. Write to inferior
6665 if SHOULD_WRITE is nonzero. Returns length of data written or
6666 read; 0 for error. TARGET is unused. */
6669 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6670 int should_write
, struct mem_attrib
*attrib
,
6671 struct target_ops
*target
)
6675 set_remote_traceframe ();
6676 set_general_thread (inferior_ptid
);
6679 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6681 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6686 /* Sends a packet with content determined by the printf format string
6687 FORMAT and the remaining arguments, then gets the reply. Returns
6688 whether the packet was a success, a failure, or unknown. */
6690 static enum packet_result
6691 remote_send_printf (const char *format
, ...)
6693 struct remote_state
*rs
= get_remote_state ();
6694 int max_size
= get_remote_packet_size ();
6697 va_start (ap
, format
);
6700 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6701 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6703 if (putpkt (rs
->buf
) < 0)
6704 error (_("Communication problem with target."));
6707 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6709 return packet_check_result (rs
->buf
);
6713 restore_remote_timeout (void *p
)
6715 int value
= *(int *)p
;
6717 remote_timeout
= value
;
6720 /* Flash writing can take quite some time. We'll set
6721 effectively infinite timeout for flash operations.
6722 In future, we'll need to decide on a better approach. */
6723 static const int remote_flash_timeout
= 1000;
6726 remote_flash_erase (struct target_ops
*ops
,
6727 ULONGEST address
, LONGEST length
)
6729 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6730 int saved_remote_timeout
= remote_timeout
;
6731 enum packet_result ret
;
6732 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6733 &saved_remote_timeout
);
6735 remote_timeout
= remote_flash_timeout
;
6737 ret
= remote_send_printf ("vFlashErase:%s,%s",
6738 phex (address
, addr_size
),
6742 case PACKET_UNKNOWN
:
6743 error (_("Remote target does not support flash erase"));
6745 error (_("Error erasing flash with vFlashErase packet"));
6750 do_cleanups (back_to
);
6754 remote_flash_write (struct target_ops
*ops
,
6755 ULONGEST address
, LONGEST length
,
6756 const gdb_byte
*data
)
6758 int saved_remote_timeout
= remote_timeout
;
6760 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6761 &saved_remote_timeout
);
6763 remote_timeout
= remote_flash_timeout
;
6764 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6765 do_cleanups (back_to
);
6771 remote_flash_done (struct target_ops
*ops
)
6773 int saved_remote_timeout
= remote_timeout
;
6775 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6776 &saved_remote_timeout
);
6778 remote_timeout
= remote_flash_timeout
;
6779 ret
= remote_send_printf ("vFlashDone");
6780 do_cleanups (back_to
);
6784 case PACKET_UNKNOWN
:
6785 error (_("Remote target does not support vFlashDone"));
6787 error (_("Error finishing flash operation"));
6794 remote_files_info (struct target_ops
*ignore
)
6796 puts_filtered ("Debugging a target over a serial line.\n");
6799 /* Stuff for dealing with the packets which are part of this protocol.
6800 See comment at top of file for details. */
6802 /* Read a single character from the remote end. */
6805 readchar (int timeout
)
6809 ch
= serial_readchar (remote_desc
, timeout
);
6814 switch ((enum serial_rc
) ch
)
6818 error (_("Remote connection closed"));
6822 perror_with_name (_("Remote communication error. "
6823 "Target disconnected."));
6825 case SERIAL_TIMEOUT
:
6831 /* Send the command in *BUF to the remote machine, and read the reply
6832 into *BUF. Report an error if we get an error reply. Resize
6833 *BUF using xrealloc if necessary to hold the result, and update
6837 remote_send (char **buf
,
6841 getpkt (buf
, sizeof_buf
, 0);
6843 if ((*buf
)[0] == 'E')
6844 error (_("Remote failure reply: %s"), *buf
);
6847 /* Return a pointer to an xmalloc'ed string representing an escaped
6848 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6849 etc. The caller is responsible for releasing the returned
6853 escape_buffer (const char *buf
, int n
)
6855 struct cleanup
*old_chain
;
6856 struct ui_file
*stb
;
6859 stb
= mem_fileopen ();
6860 old_chain
= make_cleanup_ui_file_delete (stb
);
6862 fputstrn_unfiltered (buf
, n
, 0, stb
);
6863 str
= ui_file_xstrdup (stb
, NULL
);
6864 do_cleanups (old_chain
);
6868 /* Display a null-terminated packet on stdout, for debugging, using C
6872 print_packet (char *buf
)
6874 puts_filtered ("\"");
6875 fputstr_filtered (buf
, '"', gdb_stdout
);
6876 puts_filtered ("\"");
6882 return putpkt_binary (buf
, strlen (buf
));
6885 /* Send a packet to the remote machine, with error checking. The data
6886 of the packet is in BUF. The string in BUF can be at most
6887 get_remote_packet_size () - 5 to account for the $, # and checksum,
6888 and for a possible /0 if we are debugging (remote_debug) and want
6889 to print the sent packet as a string. */
6892 putpkt_binary (char *buf
, int cnt
)
6894 struct remote_state
*rs
= get_remote_state ();
6896 unsigned char csum
= 0;
6897 char *buf2
= alloca (cnt
+ 6);
6903 /* Catch cases like trying to read memory or listing threads while
6904 we're waiting for a stop reply. The remote server wouldn't be
6905 ready to handle this request, so we'd hang and timeout. We don't
6906 have to worry about this in synchronous mode, because in that
6907 case it's not possible to issue a command while the target is
6908 running. This is not a problem in non-stop mode, because in that
6909 case, the stub is always ready to process serial input. */
6910 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6911 error (_("Cannot execute this command while the target is running."));
6913 /* We're sending out a new packet. Make sure we don't look at a
6914 stale cached response. */
6915 rs
->cached_wait_status
= 0;
6917 /* Copy the packet into buffer BUF2, encapsulating it
6918 and giving it a checksum. */
6923 for (i
= 0; i
< cnt
; i
++)
6929 *p
++ = tohex ((csum
>> 4) & 0xf);
6930 *p
++ = tohex (csum
& 0xf);
6932 /* Send it over and over until we get a positive ack. */
6936 int started_error_output
= 0;
6940 struct cleanup
*old_chain
;
6944 str
= escape_buffer (buf2
, p
- buf2
);
6945 old_chain
= make_cleanup (xfree
, str
);
6946 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6947 gdb_flush (gdb_stdlog
);
6948 do_cleanups (old_chain
);
6950 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6951 perror_with_name (_("putpkt: write failed"));
6953 /* If this is a no acks version of the remote protocol, send the
6954 packet and move on. */
6958 /* Read until either a timeout occurs (-2) or '+' is read.
6959 Handle any notification that arrives in the mean time. */
6962 ch
= readchar (remote_timeout
);
6970 case SERIAL_TIMEOUT
:
6973 if (started_error_output
)
6975 putchar_unfiltered ('\n');
6976 started_error_output
= 0;
6985 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6989 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6991 case SERIAL_TIMEOUT
:
6995 break; /* Retransmit buffer. */
6999 fprintf_unfiltered (gdb_stdlog
,
7000 "Packet instead of Ack, ignoring it\n");
7001 /* It's probably an old response sent because an ACK
7002 was lost. Gobble up the packet and ack it so it
7003 doesn't get retransmitted when we resend this
7006 serial_write (remote_desc
, "+", 1);
7007 continue; /* Now, go look for +. */
7014 /* If we got a notification, handle it, and go back to looking
7016 /* We've found the start of a notification. Now
7017 collect the data. */
7018 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7023 struct cleanup
*old_chain
;
7026 str
= escape_buffer (rs
->buf
, val
);
7027 old_chain
= make_cleanup (xfree
, str
);
7028 fprintf_unfiltered (gdb_stdlog
,
7029 " Notification received: %s\n",
7031 do_cleanups (old_chain
);
7033 handle_notification (rs
->buf
, val
);
7034 /* We're in sync now, rewait for the ack. */
7041 if (!started_error_output
)
7043 started_error_output
= 1;
7044 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7046 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7047 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7056 if (!started_error_output
)
7058 started_error_output
= 1;
7059 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7061 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7065 break; /* Here to retransmit. */
7069 /* This is wrong. If doing a long backtrace, the user should be
7070 able to get out next time we call QUIT, without anything as
7071 violent as interrupt_query. If we want to provide a way out of
7072 here without getting to the next QUIT, it should be based on
7073 hitting ^C twice as in remote_wait. */
7084 /* Come here after finding the start of a frame when we expected an
7085 ack. Do our best to discard the rest of this packet. */
7094 c
= readchar (remote_timeout
);
7097 case SERIAL_TIMEOUT
:
7098 /* Nothing we can do. */
7101 /* Discard the two bytes of checksum and stop. */
7102 c
= readchar (remote_timeout
);
7104 c
= readchar (remote_timeout
);
7107 case '*': /* Run length encoding. */
7108 /* Discard the repeat count. */
7109 c
= readchar (remote_timeout
);
7114 /* A regular character. */
7120 /* Come here after finding the start of the frame. Collect the rest
7121 into *BUF, verifying the checksum, length, and handling run-length
7122 compression. NUL terminate the buffer. If there is not enough room,
7123 expand *BUF using xrealloc.
7125 Returns -1 on error, number of characters in buffer (ignoring the
7126 trailing NULL) on success. (could be extended to return one of the
7127 SERIAL status indications). */
7130 read_frame (char **buf_p
,
7137 struct remote_state
*rs
= get_remote_state ();
7144 c
= readchar (remote_timeout
);
7147 case SERIAL_TIMEOUT
:
7149 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7153 fputs_filtered ("Saw new packet start in middle of old one\n",
7155 return -1; /* Start a new packet, count retries. */
7158 unsigned char pktcsum
;
7164 check_0
= readchar (remote_timeout
);
7166 check_1
= readchar (remote_timeout
);
7168 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7171 fputs_filtered ("Timeout in checksum, retrying\n",
7175 else if (check_0
< 0 || check_1
< 0)
7178 fputs_filtered ("Communication error in checksum\n",
7183 /* Don't recompute the checksum; with no ack packets we
7184 don't have any way to indicate a packet retransmission
7189 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7190 if (csum
== pktcsum
)
7195 struct cleanup
*old_chain
;
7198 str
= escape_buffer (buf
, bc
);
7199 old_chain
= make_cleanup (xfree
, str
);
7200 fprintf_unfiltered (gdb_stdlog
,
7201 "Bad checksum, sentsum=0x%x, "
7202 "csum=0x%x, buf=%s\n",
7203 pktcsum
, csum
, str
);
7204 do_cleanups (old_chain
);
7206 /* Number of characters in buffer ignoring trailing
7210 case '*': /* Run length encoding. */
7215 c
= readchar (remote_timeout
);
7217 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7219 /* The character before ``*'' is repeated. */
7221 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7223 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7225 /* Make some more room in the buffer. */
7226 *sizeof_buf
+= repeat
;
7227 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7231 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7237 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7241 if (bc
>= *sizeof_buf
- 1)
7243 /* Make some more room in the buffer. */
7245 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7256 /* Read a packet from the remote machine, with error checking, and
7257 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7258 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7259 rather than timing out; this is used (in synchronous mode) to wait
7260 for a target that is is executing user code to stop. */
7261 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7262 don't have to change all the calls to getpkt to deal with the
7263 return value, because at the moment I don't know what the right
7264 thing to do it for those. */
7272 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7276 /* Read a packet from the remote machine, with error checking, and
7277 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7278 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7279 rather than timing out; this is used (in synchronous mode) to wait
7280 for a target that is is executing user code to stop. If FOREVER ==
7281 0, this function is allowed to time out gracefully and return an
7282 indication of this to the caller. Otherwise return the number of
7283 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7284 enough reason to return to the caller. */
7287 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7288 int expecting_notif
)
7290 struct remote_state
*rs
= get_remote_state ();
7296 /* We're reading a new response. Make sure we don't look at a
7297 previously cached response. */
7298 rs
->cached_wait_status
= 0;
7300 strcpy (*buf
, "timeout");
7303 timeout
= watchdog
> 0 ? watchdog
: -1;
7304 else if (expecting_notif
)
7305 timeout
= 0; /* There should already be a char in the buffer. If
7308 timeout
= remote_timeout
;
7312 /* Process any number of notifications, and then return when
7316 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7318 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7320 /* This can loop forever if the remote side sends us
7321 characters continuously, but if it pauses, we'll get
7322 SERIAL_TIMEOUT from readchar because of timeout. Then
7323 we'll count that as a retry.
7325 Note that even when forever is set, we will only wait
7326 forever prior to the start of a packet. After that, we
7327 expect characters to arrive at a brisk pace. They should
7328 show up within remote_timeout intervals. */
7330 c
= readchar (timeout
);
7331 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7333 if (c
== SERIAL_TIMEOUT
)
7335 if (expecting_notif
)
7336 return -1; /* Don't complain, it's normal to not get
7337 anything in this case. */
7339 if (forever
) /* Watchdog went off? Kill the target. */
7343 error (_("Watchdog timeout has expired. Target detached."));
7346 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7350 /* We've found the start of a packet or notification.
7351 Now collect the data. */
7352 val
= read_frame (buf
, sizeof_buf
);
7357 serial_write (remote_desc
, "-", 1);
7360 if (tries
> MAX_TRIES
)
7362 /* We have tried hard enough, and just can't receive the
7363 packet/notification. Give up. */
7364 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7366 /* Skip the ack char if we're in no-ack mode. */
7367 if (!rs
->noack_mode
)
7368 serial_write (remote_desc
, "+", 1);
7372 /* If we got an ordinary packet, return that to our caller. */
7377 struct cleanup
*old_chain
;
7380 str
= escape_buffer (*buf
, val
);
7381 old_chain
= make_cleanup (xfree
, str
);
7382 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7383 do_cleanups (old_chain
);
7386 /* Skip the ack char if we're in no-ack mode. */
7387 if (!rs
->noack_mode
)
7388 serial_write (remote_desc
, "+", 1);
7392 /* If we got a notification, handle it, and go back to looking
7396 gdb_assert (c
== '%');
7400 struct cleanup
*old_chain
;
7403 str
= escape_buffer (*buf
, val
);
7404 old_chain
= make_cleanup (xfree
, str
);
7405 fprintf_unfiltered (gdb_stdlog
,
7406 " Notification received: %s\n",
7408 do_cleanups (old_chain
);
7411 handle_notification (*buf
, val
);
7413 /* Notifications require no acknowledgement. */
7415 if (expecting_notif
)
7422 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7424 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7428 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7430 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7434 /* A helper function that just calls putpkt; for type correctness. */
7437 putpkt_for_catch_errors (void *arg
)
7439 return putpkt (arg
);
7443 remote_kill (struct target_ops
*ops
)
7445 /* Use catch_errors so the user can quit from gdb even when we
7446 aren't on speaking terms with the remote system. */
7447 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7449 /* Don't wait for it to die. I'm not really sure it matters whether
7450 we do or not. For the existing stubs, kill is a noop. */
7451 target_mourn_inferior ();
7455 remote_vkill (int pid
, struct remote_state
*rs
)
7457 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7460 /* Tell the remote target to detach. */
7461 sprintf (rs
->buf
, "vKill;%x", pid
);
7463 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7465 if (packet_ok (rs
->buf
,
7466 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7468 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7475 extended_remote_kill (struct target_ops
*ops
)
7478 int pid
= ptid_get_pid (inferior_ptid
);
7479 struct remote_state
*rs
= get_remote_state ();
7481 res
= remote_vkill (pid
, rs
);
7482 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7484 /* Don't try 'k' on a multi-process aware stub -- it has no way
7485 to specify the pid. */
7489 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7490 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7493 /* Don't wait for it to die. I'm not really sure it matters whether
7494 we do or not. For the existing stubs, kill is a noop. */
7500 error (_("Can't kill process"));
7502 target_mourn_inferior ();
7506 remote_mourn (struct target_ops
*ops
)
7508 remote_mourn_1 (ops
);
7511 /* Worker function for remote_mourn. */
7513 remote_mourn_1 (struct target_ops
*target
)
7515 unpush_target (target
);
7517 /* remote_close takes care of doing most of the clean up. */
7518 generic_mourn_inferior ();
7522 extended_remote_mourn_1 (struct target_ops
*target
)
7524 struct remote_state
*rs
= get_remote_state ();
7526 /* In case we got here due to an error, but we're going to stay
7528 rs
->waiting_for_stop_reply
= 0;
7530 /* We're no longer interested in these events. */
7531 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7533 /* If the current general thread belonged to the process we just
7534 detached from or has exited, the remote side current general
7535 thread becomes undefined. Considering a case like this:
7537 - We just got here due to a detach.
7538 - The process that we're detaching from happens to immediately
7539 report a global breakpoint being hit in non-stop mode, in the
7540 same thread we had selected before.
7541 - GDB attaches to this process again.
7542 - This event happens to be the next event we handle.
7544 GDB would consider that the current general thread didn't need to
7545 be set on the stub side (with Hg), since for all it knew,
7546 GENERAL_THREAD hadn't changed.
7548 Notice that although in all-stop mode, the remote server always
7549 sets the current thread to the thread reporting the stop event,
7550 that doesn't happen in non-stop mode; in non-stop, the stub *must
7551 not* change the current thread when reporting a breakpoint hit,
7552 due to the decoupling of event reporting and event handling.
7554 To keep things simple, we always invalidate our notion of the
7556 record_currthread (minus_one_ptid
);
7558 /* Unlike "target remote", we do not want to unpush the target; then
7559 the next time the user says "run", we won't be connected. */
7561 /* Call common code to mark the inferior as not running. */
7562 generic_mourn_inferior ();
7564 if (!have_inferiors ())
7566 if (!remote_multi_process_p (rs
))
7568 /* Check whether the target is running now - some remote stubs
7569 automatically restart after kill. */
7571 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7573 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7575 /* Assume that the target has been restarted. Set
7576 inferior_ptid so that bits of core GDB realizes
7577 there's something here, e.g., so that the user can
7578 say "kill" again. */
7579 inferior_ptid
= magic_null_ptid
;
7586 extended_remote_mourn (struct target_ops
*ops
)
7588 extended_remote_mourn_1 (ops
);
7592 extended_remote_supports_disable_randomization (void)
7594 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7599 extended_remote_disable_randomization (int val
)
7601 struct remote_state
*rs
= get_remote_state ();
7604 sprintf (rs
->buf
, "QDisableRandomization:%x", val
);
7606 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7608 error (_("Target does not support QDisableRandomization."));
7609 if (strcmp (reply
, "OK") != 0)
7610 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7614 extended_remote_run (char *args
)
7616 struct remote_state
*rs
= get_remote_state ();
7619 /* If the user has disabled vRun support, or we have detected that
7620 support is not available, do not try it. */
7621 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7624 strcpy (rs
->buf
, "vRun;");
7625 len
= strlen (rs
->buf
);
7627 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7628 error (_("Remote file name too long for run packet"));
7629 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7631 gdb_assert (args
!= NULL
);
7634 struct cleanup
*back_to
;
7638 argv
= gdb_buildargv (args
);
7639 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7640 for (i
= 0; argv
[i
] != NULL
; i
++)
7642 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7643 error (_("Argument list too long for run packet"));
7644 rs
->buf
[len
++] = ';';
7645 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7647 do_cleanups (back_to
);
7650 rs
->buf
[len
++] = '\0';
7653 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7655 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7657 /* We have a wait response; we don't need it, though. All is well. */
7660 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7661 /* It wasn't disabled before, but it is now. */
7665 if (remote_exec_file
[0] == '\0')
7666 error (_("Running the default executable on the remote target failed; "
7667 "try \"set remote exec-file\"?"));
7669 error (_("Running \"%s\" on the remote target failed"),
7674 /* In the extended protocol we want to be able to do things like
7675 "run" and have them basically work as expected. So we need
7676 a special create_inferior function. We support changing the
7677 executable file and the command line arguments, but not the
7681 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7682 char **env
, int from_tty
)
7684 /* If running asynchronously, register the target file descriptor
7685 with the event loop. */
7686 if (target_can_async_p ())
7687 target_async (inferior_event_handler
, 0);
7689 /* Disable address space randomization if requested (and supported). */
7690 if (extended_remote_supports_disable_randomization ())
7691 extended_remote_disable_randomization (disable_randomization
);
7693 /* Now restart the remote server. */
7694 if (extended_remote_run (args
) == -1)
7696 /* vRun was not supported. Fail if we need it to do what the
7698 if (remote_exec_file
[0])
7699 error (_("Remote target does not support \"set remote exec-file\""));
7701 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7703 /* Fall back to "R". */
7704 extended_remote_restart ();
7707 if (!have_inferiors ())
7709 /* Clean up from the last time we ran, before we mark the target
7710 running again. This will mark breakpoints uninserted, and
7711 get_offsets may insert breakpoints. */
7712 init_thread_list ();
7713 init_wait_for_inferior ();
7716 add_current_inferior_and_thread ();
7718 /* Get updated offsets, if the stub uses qOffsets. */
7723 extended_remote_create_inferior (struct target_ops
*ops
,
7724 char *exec_file
, char *args
,
7725 char **env
, int from_tty
)
7727 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7731 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7732 the list of conditions (in agent expression bytecode format), if any, the
7733 target needs to evaluate. The output is placed into the packet buffer
7737 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7738 struct bp_target_info
*bp_tgt
, char *buf
)
7740 struct agent_expr
*aexpr
= NULL
;
7743 char *buf_start
= buf
;
7745 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7748 buf
+= strlen (buf
);
7749 sprintf (buf
, "%s", ";");
7752 /* Send conditions to the target and free the vector. */
7754 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
7757 sprintf (buf
, "X%x,", aexpr
->len
);
7758 buf
+= strlen (buf
);
7759 for (i
= 0; i
< aexpr
->len
; ++i
)
7760 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
7764 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
7768 /* Insert a breakpoint. On targets that have software breakpoint
7769 support, we ask the remote target to do the work; on targets
7770 which don't, we insert a traditional memory breakpoint. */
7773 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7774 struct bp_target_info
*bp_tgt
)
7776 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7777 If it succeeds, then set the support to PACKET_ENABLE. If it
7778 fails, and the user has explicitly requested the Z support then
7779 report an error, otherwise, mark it disabled and go on. */
7781 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7783 CORE_ADDR addr
= bp_tgt
->placed_address
;
7784 struct remote_state
*rs
;
7787 struct condition_list
*cond
= NULL
;
7789 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7791 rs
= get_remote_state ();
7797 addr
= (ULONGEST
) remote_address_masked (addr
);
7798 p
+= hexnumstr (p
, addr
);
7799 sprintf (p
, ",%d", bpsize
);
7801 if (remote_supports_cond_breakpoints ())
7802 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
);
7805 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7807 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7812 bp_tgt
->placed_address
= addr
;
7813 bp_tgt
->placed_size
= bpsize
;
7815 case PACKET_UNKNOWN
:
7820 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7824 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7825 struct bp_target_info
*bp_tgt
)
7827 CORE_ADDR addr
= bp_tgt
->placed_address
;
7828 struct remote_state
*rs
= get_remote_state ();
7830 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7838 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7839 p
+= hexnumstr (p
, addr
);
7840 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7843 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7845 return (rs
->buf
[0] == 'E');
7848 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7852 watchpoint_to_Z_packet (int type
)
7857 return Z_PACKET_WRITE_WP
;
7860 return Z_PACKET_READ_WP
;
7863 return Z_PACKET_ACCESS_WP
;
7866 internal_error (__FILE__
, __LINE__
,
7867 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7872 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
7873 struct expression
*cond
)
7875 struct remote_state
*rs
= get_remote_state ();
7877 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7879 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7882 sprintf (rs
->buf
, "Z%x,", packet
);
7883 p
= strchr (rs
->buf
, '\0');
7884 addr
= remote_address_masked (addr
);
7885 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7886 sprintf (p
, ",%x", len
);
7889 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7891 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7895 case PACKET_UNKNOWN
:
7900 internal_error (__FILE__
, __LINE__
,
7901 _("remote_insert_watchpoint: reached end of function"));
7905 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
7906 CORE_ADDR start
, int length
)
7908 CORE_ADDR diff
= remote_address_masked (addr
- start
);
7910 return diff
< length
;
7915 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
7916 struct expression
*cond
)
7918 struct remote_state
*rs
= get_remote_state ();
7920 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7922 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7925 sprintf (rs
->buf
, "z%x,", packet
);
7926 p
= strchr (rs
->buf
, '\0');
7927 addr
= remote_address_masked (addr
);
7928 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7929 sprintf (p
, ",%x", len
);
7931 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7933 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7936 case PACKET_UNKNOWN
:
7941 internal_error (__FILE__
, __LINE__
,
7942 _("remote_remove_watchpoint: reached end of function"));
7946 int remote_hw_watchpoint_limit
= -1;
7947 int remote_hw_watchpoint_length_limit
= -1;
7948 int remote_hw_breakpoint_limit
= -1;
7951 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
7953 if (remote_hw_watchpoint_length_limit
== 0)
7955 else if (remote_hw_watchpoint_length_limit
< 0)
7957 else if (len
<= remote_hw_watchpoint_length_limit
)
7964 remote_check_watch_resources (int type
, int cnt
, int ot
)
7966 if (type
== bp_hardware_breakpoint
)
7968 if (remote_hw_breakpoint_limit
== 0)
7970 else if (remote_hw_breakpoint_limit
< 0)
7972 else if (cnt
<= remote_hw_breakpoint_limit
)
7977 if (remote_hw_watchpoint_limit
== 0)
7979 else if (remote_hw_watchpoint_limit
< 0)
7983 else if (cnt
<= remote_hw_watchpoint_limit
)
7990 remote_stopped_by_watchpoint (void)
7992 return remote_stopped_by_watchpoint_p
;
7996 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8000 if (remote_stopped_by_watchpoint ())
8002 *addr_p
= remote_watch_data_address
;
8011 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8012 struct bp_target_info
*bp_tgt
)
8015 struct remote_state
*rs
;
8018 /* The length field should be set to the size of a breakpoint
8019 instruction, even though we aren't inserting one ourselves. */
8021 gdbarch_remote_breakpoint_from_pc
8022 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8024 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8027 rs
= get_remote_state ();
8034 addr
= remote_address_masked (bp_tgt
->placed_address
);
8035 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8036 sprintf (p
, ",%x", bp_tgt
->placed_size
);
8038 if (remote_supports_cond_breakpoints ())
8039 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
);
8042 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8044 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8047 case PACKET_UNKNOWN
:
8052 internal_error (__FILE__
, __LINE__
,
8053 _("remote_insert_hw_breakpoint: reached end of function"));
8058 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8059 struct bp_target_info
*bp_tgt
)
8062 struct remote_state
*rs
= get_remote_state ();
8065 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8072 addr
= remote_address_masked (bp_tgt
->placed_address
);
8073 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8074 sprintf (p
, ",%x", bp_tgt
->placed_size
);
8077 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8079 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8082 case PACKET_UNKNOWN
:
8087 internal_error (__FILE__
, __LINE__
,
8088 _("remote_remove_hw_breakpoint: reached end of function"));
8091 /* Table used by the crc32 function to calcuate the checksum. */
8093 static unsigned long crc32_table
[256] =
8096 static unsigned long
8097 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8099 if (!crc32_table
[1])
8101 /* Initialize the CRC table and the decoding table. */
8105 for (i
= 0; i
< 256; i
++)
8107 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8108 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8115 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8121 /* Verify memory using the "qCRC:" request. */
8124 remote_verify_memory (struct target_ops
*ops
,
8125 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8127 struct remote_state
*rs
= get_remote_state ();
8128 unsigned long host_crc
, target_crc
;
8131 /* FIXME: assumes lma can fit into long. */
8132 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8133 (long) lma
, (long) size
);
8136 /* Be clever; compute the host_crc before waiting for target
8138 host_crc
= crc32 (data
, size
, 0xffffffff);
8140 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8141 if (rs
->buf
[0] == 'E')
8144 if (rs
->buf
[0] != 'C')
8145 error (_("remote target does not support this operation"));
8147 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8148 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8150 return (host_crc
== target_crc
);
8153 /* compare-sections command
8155 With no arguments, compares each loadable section in the exec bfd
8156 with the same memory range on the target, and reports mismatches.
8157 Useful for verifying the image on the target against the exec file. */
8160 compare_sections_command (char *args
, int from_tty
)
8163 struct cleanup
*old_chain
;
8165 const char *sectname
;
8173 error (_("command cannot be used without an exec file"));
8175 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8177 if (!(s
->flags
& SEC_LOAD
))
8178 continue; /* Skip non-loadable section. */
8180 size
= bfd_get_section_size (s
);
8182 continue; /* Skip zero-length section. */
8184 sectname
= bfd_get_section_name (exec_bfd
, s
);
8185 if (args
&& strcmp (args
, sectname
) != 0)
8186 continue; /* Not the section selected by user. */
8188 matched
= 1; /* Do this section. */
8191 sectdata
= xmalloc (size
);
8192 old_chain
= make_cleanup (xfree
, sectdata
);
8193 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8195 res
= target_verify_memory (sectdata
, lma
, size
);
8198 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8199 paddress (target_gdbarch
, lma
),
8200 paddress (target_gdbarch
, lma
+ size
));
8202 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8203 paddress (target_gdbarch
, lma
),
8204 paddress (target_gdbarch
, lma
+ size
));
8206 printf_filtered ("matched.\n");
8209 printf_filtered ("MIS-MATCHED!\n");
8213 do_cleanups (old_chain
);
8216 warning (_("One or more sections of the remote executable does not match\n\
8217 the loaded file\n"));
8218 if (args
&& !matched
)
8219 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8222 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8223 into remote target. The number of bytes written to the remote
8224 target is returned, or -1 for error. */
8227 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8228 const char *annex
, const gdb_byte
*writebuf
,
8229 ULONGEST offset
, LONGEST len
,
8230 struct packet_config
*packet
)
8234 struct remote_state
*rs
= get_remote_state ();
8235 int max_size
= get_memory_write_packet_size ();
8237 if (packet
->support
== PACKET_DISABLE
)
8240 /* Insert header. */
8241 i
= snprintf (rs
->buf
, max_size
,
8242 "qXfer:%s:write:%s:%s:",
8243 object_name
, annex
? annex
: "",
8244 phex_nz (offset
, sizeof offset
));
8245 max_size
-= (i
+ 1);
8247 /* Escape as much data as fits into rs->buf. */
8248 buf_len
= remote_escape_output
8249 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8251 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8252 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8253 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8256 unpack_varlen_hex (rs
->buf
, &n
);
8260 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8261 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8262 number of bytes read is returned, or 0 for EOF, or -1 for error.
8263 The number of bytes read may be less than LEN without indicating an
8264 EOF. PACKET is checked and updated to indicate whether the remote
8265 target supports this object. */
8268 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8270 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8271 struct packet_config
*packet
)
8273 static char *finished_object
;
8274 static char *finished_annex
;
8275 static ULONGEST finished_offset
;
8277 struct remote_state
*rs
= get_remote_state ();
8278 LONGEST i
, n
, packet_len
;
8280 if (packet
->support
== PACKET_DISABLE
)
8283 /* Check whether we've cached an end-of-object packet that matches
8285 if (finished_object
)
8287 if (strcmp (object_name
, finished_object
) == 0
8288 && strcmp (annex
? annex
: "", finished_annex
) == 0
8289 && offset
== finished_offset
)
8292 /* Otherwise, we're now reading something different. Discard
8294 xfree (finished_object
);
8295 xfree (finished_annex
);
8296 finished_object
= NULL
;
8297 finished_annex
= NULL
;
8300 /* Request only enough to fit in a single packet. The actual data
8301 may not, since we don't know how much of it will need to be escaped;
8302 the target is free to respond with slightly less data. We subtract
8303 five to account for the response type and the protocol frame. */
8304 n
= min (get_remote_packet_size () - 5, len
);
8305 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8306 object_name
, annex
? annex
: "",
8307 phex_nz (offset
, sizeof offset
),
8308 phex_nz (n
, sizeof n
));
8309 i
= putpkt (rs
->buf
);
8314 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8315 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8318 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8319 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8321 /* 'm' means there is (or at least might be) more data after this
8322 batch. That does not make sense unless there's at least one byte
8323 of data in this reply. */
8324 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8325 error (_("Remote qXfer reply contained no data."));
8327 /* Got some data. */
8328 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8330 /* 'l' is an EOF marker, possibly including a final block of data,
8331 or possibly empty. If we have the final block of a non-empty
8332 object, record this fact to bypass a subsequent partial read. */
8333 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8335 finished_object
= xstrdup (object_name
);
8336 finished_annex
= xstrdup (annex
? annex
: "");
8337 finished_offset
= offset
+ i
;
8344 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8345 const char *annex
, gdb_byte
*readbuf
,
8346 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8348 struct remote_state
*rs
;
8353 set_remote_traceframe ();
8354 set_general_thread (inferior_ptid
);
8356 rs
= get_remote_state ();
8358 /* Handle memory using the standard memory routines. */
8359 if (object
== TARGET_OBJECT_MEMORY
)
8365 /* If the remote target is connected but not running, we should
8366 pass this request down to a lower stratum (e.g. the executable
8368 if (!target_has_execution
)
8371 if (writebuf
!= NULL
)
8372 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8374 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8378 else if (xfered
== 0 && errno
== 0)
8384 /* Handle SPU memory using qxfer packets. */
8385 if (object
== TARGET_OBJECT_SPU
)
8388 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8389 &remote_protocol_packets
8390 [PACKET_qXfer_spu_read
]);
8392 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8393 &remote_protocol_packets
8394 [PACKET_qXfer_spu_write
]);
8397 /* Handle extra signal info using qxfer packets. */
8398 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8401 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8402 &remote_protocol_packets
8403 [PACKET_qXfer_siginfo_read
]);
8405 return remote_write_qxfer (ops
, "siginfo", annex
,
8406 writebuf
, offset
, len
,
8407 &remote_protocol_packets
8408 [PACKET_qXfer_siginfo_write
]);
8411 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8414 return remote_read_qxfer (ops
, "statictrace", annex
,
8415 readbuf
, offset
, len
,
8416 &remote_protocol_packets
8417 [PACKET_qXfer_statictrace_read
]);
8422 /* Only handle flash writes. */
8423 if (writebuf
!= NULL
)
8429 case TARGET_OBJECT_FLASH
:
8430 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8434 else if (xfered
== 0 && errno
== 0)
8444 /* Map pre-existing objects onto letters. DO NOT do this for new
8445 objects!!! Instead specify new query packets. */
8448 case TARGET_OBJECT_AVR
:
8452 case TARGET_OBJECT_AUXV
:
8453 gdb_assert (annex
== NULL
);
8454 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8455 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8457 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8458 return remote_read_qxfer
8459 (ops
, "features", annex
, readbuf
, offset
, len
,
8460 &remote_protocol_packets
[PACKET_qXfer_features
]);
8462 case TARGET_OBJECT_LIBRARIES
:
8463 return remote_read_qxfer
8464 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8465 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8467 case TARGET_OBJECT_LIBRARIES_SVR4
:
8468 return remote_read_qxfer
8469 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8470 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8472 case TARGET_OBJECT_MEMORY_MAP
:
8473 gdb_assert (annex
== NULL
);
8474 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8475 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8477 case TARGET_OBJECT_OSDATA
:
8478 /* Should only get here if we're connected. */
8479 gdb_assert (remote_desc
);
8480 return remote_read_qxfer
8481 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8482 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8484 case TARGET_OBJECT_THREADS
:
8485 gdb_assert (annex
== NULL
);
8486 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8487 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8489 case TARGET_OBJECT_TRACEFRAME_INFO
:
8490 gdb_assert (annex
== NULL
);
8491 return remote_read_qxfer
8492 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8493 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8495 case TARGET_OBJECT_FDPIC
:
8496 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8497 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8502 /* Note: a zero OFFSET and LEN can be used to query the minimum
8504 if (offset
== 0 && len
== 0)
8505 return (get_remote_packet_size ());
8506 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8507 large enough let the caller deal with it. */
8508 if (len
< get_remote_packet_size ())
8510 len
= get_remote_packet_size ();
8512 /* Except for querying the minimum buffer size, target must be open. */
8514 error (_("remote query is only available after target open"));
8516 gdb_assert (annex
!= NULL
);
8517 gdb_assert (readbuf
!= NULL
);
8523 /* We used one buffer char for the remote protocol q command and
8524 another for the query type. As the remote protocol encapsulation
8525 uses 4 chars plus one extra in case we are debugging
8526 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8529 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8531 /* Bad caller may have sent forbidden characters. */
8532 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8537 gdb_assert (annex
[i
] == '\0');
8539 i
= putpkt (rs
->buf
);
8543 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8544 strcpy ((char *) readbuf
, rs
->buf
);
8546 return strlen ((char *) readbuf
);
8550 remote_search_memory (struct target_ops
* ops
,
8551 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8552 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8553 CORE_ADDR
*found_addrp
)
8555 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8556 struct remote_state
*rs
= get_remote_state ();
8557 int max_size
= get_memory_write_packet_size ();
8558 struct packet_config
*packet
=
8559 &remote_protocol_packets
[PACKET_qSearch_memory
];
8560 /* Number of packet bytes used to encode the pattern;
8561 this could be more than PATTERN_LEN due to escape characters. */
8562 int escaped_pattern_len
;
8563 /* Amount of pattern that was encodable in the packet. */
8564 int used_pattern_len
;
8567 ULONGEST found_addr
;
8569 /* Don't go to the target if we don't have to.
8570 This is done before checking packet->support to avoid the possibility that
8571 a success for this edge case means the facility works in general. */
8572 if (pattern_len
> search_space_len
)
8574 if (pattern_len
== 0)
8576 *found_addrp
= start_addr
;
8580 /* If we already know the packet isn't supported, fall back to the simple
8581 way of searching memory. */
8583 if (packet
->support
== PACKET_DISABLE
)
8585 /* Target doesn't provided special support, fall back and use the
8586 standard support (copy memory and do the search here). */
8587 return simple_search_memory (ops
, start_addr
, search_space_len
,
8588 pattern
, pattern_len
, found_addrp
);
8591 /* Insert header. */
8592 i
= snprintf (rs
->buf
, max_size
,
8593 "qSearch:memory:%s;%s;",
8594 phex_nz (start_addr
, addr_size
),
8595 phex_nz (search_space_len
, sizeof (search_space_len
)));
8596 max_size
-= (i
+ 1);
8598 /* Escape as much data as fits into rs->buf. */
8599 escaped_pattern_len
=
8600 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8601 &used_pattern_len
, max_size
);
8603 /* Bail if the pattern is too large. */
8604 if (used_pattern_len
!= pattern_len
)
8605 error (_("Pattern is too large to transmit to remote target."));
8607 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8608 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8609 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8611 /* The request may not have worked because the command is not
8612 supported. If so, fall back to the simple way. */
8613 if (packet
->support
== PACKET_DISABLE
)
8615 return simple_search_memory (ops
, start_addr
, search_space_len
,
8616 pattern
, pattern_len
, found_addrp
);
8621 if (rs
->buf
[0] == '0')
8623 else if (rs
->buf
[0] == '1')
8626 if (rs
->buf
[1] != ',')
8627 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8628 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8629 *found_addrp
= found_addr
;
8632 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8638 remote_rcmd (char *command
,
8639 struct ui_file
*outbuf
)
8641 struct remote_state
*rs
= get_remote_state ();
8645 error (_("remote rcmd is only available after target open"));
8647 /* Send a NULL command across as an empty command. */
8648 if (command
== NULL
)
8651 /* The query prefix. */
8652 strcpy (rs
->buf
, "qRcmd,");
8653 p
= strchr (rs
->buf
, '\0');
8655 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8656 > get_remote_packet_size ())
8657 error (_("\"monitor\" command ``%s'' is too long."), command
);
8659 /* Encode the actual command. */
8660 bin2hex ((gdb_byte
*) command
, p
, 0);
8662 if (putpkt (rs
->buf
) < 0)
8663 error (_("Communication problem with target."));
8665 /* get/display the response */
8670 /* XXX - see also remote_get_noisy_reply(). */
8671 QUIT
; /* Allow user to bail out with ^C. */
8673 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8675 /* Timeout. Continue to (try to) read responses.
8676 This is better than stopping with an error, assuming the stub
8677 is still executing the (long) monitor command.
8678 If needed, the user can interrupt gdb using C-c, obtaining
8679 an effect similar to stop on timeout. */
8684 error (_("Target does not support this command."));
8685 if (buf
[0] == 'O' && buf
[1] != 'K')
8687 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8690 if (strcmp (buf
, "OK") == 0)
8692 if (strlen (buf
) == 3 && buf
[0] == 'E'
8693 && isdigit (buf
[1]) && isdigit (buf
[2]))
8695 error (_("Protocol error with Rcmd"));
8697 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8699 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8701 fputc_unfiltered (c
, outbuf
);
8707 static VEC(mem_region_s
) *
8708 remote_memory_map (struct target_ops
*ops
)
8710 VEC(mem_region_s
) *result
= NULL
;
8711 char *text
= target_read_stralloc (¤t_target
,
8712 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8716 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8718 result
= parse_memory_map (text
);
8719 do_cleanups (back_to
);
8726 packet_command (char *args
, int from_tty
)
8728 struct remote_state
*rs
= get_remote_state ();
8731 error (_("command can only be used with remote target"));
8734 error (_("remote-packet command requires packet text as argument"));
8736 puts_filtered ("sending: ");
8737 print_packet (args
);
8738 puts_filtered ("\n");
8741 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8742 puts_filtered ("received: ");
8743 print_packet (rs
->buf
);
8744 puts_filtered ("\n");
8748 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8750 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8752 static void threadset_test_cmd (char *cmd
, int tty
);
8754 static void threadalive_test (char *cmd
, int tty
);
8756 static void threadlist_test_cmd (char *cmd
, int tty
);
8758 int get_and_display_threadinfo (threadref
*ref
);
8760 static void threadinfo_test_cmd (char *cmd
, int tty
);
8762 static int thread_display_step (threadref
*ref
, void *context
);
8764 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8766 static void init_remote_threadtests (void);
8768 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8771 threadset_test_cmd (char *cmd
, int tty
)
8773 int sample_thread
= SAMPLE_THREAD
;
8775 printf_filtered (_("Remote threadset test\n"));
8776 set_general_thread (sample_thread
);
8781 threadalive_test (char *cmd
, int tty
)
8783 int sample_thread
= SAMPLE_THREAD
;
8784 int pid
= ptid_get_pid (inferior_ptid
);
8785 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8787 if (remote_thread_alive (ptid
))
8788 printf_filtered ("PASS: Thread alive test\n");
8790 printf_filtered ("FAIL: Thread alive test\n");
8793 void output_threadid (char *title
, threadref
*ref
);
8796 output_threadid (char *title
, threadref
*ref
)
8800 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8802 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8806 threadlist_test_cmd (char *cmd
, int tty
)
8809 threadref nextthread
;
8810 int done
, result_count
;
8811 threadref threadlist
[3];
8813 printf_filtered ("Remote Threadlist test\n");
8814 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8815 &result_count
, &threadlist
[0]))
8816 printf_filtered ("FAIL: threadlist test\n");
8819 threadref
*scan
= threadlist
;
8820 threadref
*limit
= scan
+ result_count
;
8822 while (scan
< limit
)
8823 output_threadid (" thread ", scan
++);
8828 display_thread_info (struct gdb_ext_thread_info
*info
)
8830 output_threadid ("Threadid: ", &info
->threadid
);
8831 printf_filtered ("Name: %s\n ", info
->shortname
);
8832 printf_filtered ("State: %s\n", info
->display
);
8833 printf_filtered ("other: %s\n\n", info
->more_display
);
8837 get_and_display_threadinfo (threadref
*ref
)
8841 struct gdb_ext_thread_info threadinfo
;
8843 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8844 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8845 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8846 display_thread_info (&threadinfo
);
8851 threadinfo_test_cmd (char *cmd
, int tty
)
8853 int athread
= SAMPLE_THREAD
;
8857 int_to_threadref (&thread
, athread
);
8858 printf_filtered ("Remote Threadinfo test\n");
8859 if (!get_and_display_threadinfo (&thread
))
8860 printf_filtered ("FAIL cannot get thread info\n");
8864 thread_display_step (threadref
*ref
, void *context
)
8866 /* output_threadid(" threadstep ",ref); *//* simple test */
8867 return get_and_display_threadinfo (ref
);
8871 threadlist_update_test_cmd (char *cmd
, int tty
)
8873 printf_filtered ("Remote Threadlist update test\n");
8874 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8878 init_remote_threadtests (void)
8880 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
8881 _("Fetch and print the remote list of "
8882 "thread identifiers, one pkt only"));
8883 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8884 _("Fetch and display info about one thread"));
8885 add_com ("tset", class_obscure
, threadset_test_cmd
,
8886 _("Test setting to a different thread"));
8887 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8888 _("Iterate through updating all remote thread info"));
8889 add_com ("talive", class_obscure
, threadalive_test
,
8890 _(" Remote thread alive test "));
8895 /* Convert a thread ID to a string. Returns the string in a static
8899 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8901 static char buf
[64];
8902 struct remote_state
*rs
= get_remote_state ();
8904 if (ptid_equal (ptid
, null_ptid
))
8905 return normal_pid_to_str (ptid
);
8906 else if (ptid_is_pid (ptid
))
8908 /* Printing an inferior target id. */
8910 /* When multi-process extensions are off, there's no way in the
8911 remote protocol to know the remote process id, if there's any
8912 at all. There's one exception --- when we're connected with
8913 target extended-remote, and we manually attached to a process
8914 with "attach PID". We don't record anywhere a flag that
8915 allows us to distinguish that case from the case of
8916 connecting with extended-remote and the stub already being
8917 attached to a process, and reporting yes to qAttached, hence
8918 no smart special casing here. */
8919 if (!remote_multi_process_p (rs
))
8921 xsnprintf (buf
, sizeof buf
, "Remote target");
8925 return normal_pid_to_str (ptid
);
8929 if (ptid_equal (magic_null_ptid
, ptid
))
8930 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8931 else if (rs
->extended
&& remote_multi_process_p (rs
))
8932 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8933 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8935 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8936 ptid_get_tid (ptid
));
8941 /* Get the address of the thread local variable in OBJFILE which is
8942 stored at OFFSET within the thread local storage for thread PTID. */
8945 remote_get_thread_local_address (struct target_ops
*ops
,
8946 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8948 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8950 struct remote_state
*rs
= get_remote_state ();
8952 char *endp
= rs
->buf
+ get_remote_packet_size ();
8953 enum packet_result result
;
8955 strcpy (p
, "qGetTLSAddr:");
8957 p
= write_ptid (p
, endp
, ptid
);
8959 p
+= hexnumstr (p
, offset
);
8961 p
+= hexnumstr (p
, lm
);
8965 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8966 result
= packet_ok (rs
->buf
,
8967 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8968 if (result
== PACKET_OK
)
8972 unpack_varlen_hex (rs
->buf
, &result
);
8975 else if (result
== PACKET_UNKNOWN
)
8976 throw_error (TLS_GENERIC_ERROR
,
8977 _("Remote target doesn't support qGetTLSAddr packet"));
8979 throw_error (TLS_GENERIC_ERROR
,
8980 _("Remote target failed to process qGetTLSAddr request"));
8983 throw_error (TLS_GENERIC_ERROR
,
8984 _("TLS not supported or disabled on this target"));
8989 /* Provide thread local base, i.e. Thread Information Block address.
8990 Returns 1 if ptid is found and thread_local_base is non zero. */
8993 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
8995 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
8997 struct remote_state
*rs
= get_remote_state ();
8999 char *endp
= rs
->buf
+ get_remote_packet_size ();
9000 enum packet_result result
;
9002 strcpy (p
, "qGetTIBAddr:");
9004 p
= write_ptid (p
, endp
, ptid
);
9008 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9009 result
= packet_ok (rs
->buf
,
9010 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9011 if (result
== PACKET_OK
)
9015 unpack_varlen_hex (rs
->buf
, &result
);
9017 *addr
= (CORE_ADDR
) result
;
9020 else if (result
== PACKET_UNKNOWN
)
9021 error (_("Remote target doesn't support qGetTIBAddr packet"));
9023 error (_("Remote target failed to process qGetTIBAddr request"));
9026 error (_("qGetTIBAddr not supported or disabled on this target"));
9031 /* Support for inferring a target description based on the current
9032 architecture and the size of a 'g' packet. While the 'g' packet
9033 can have any size (since optional registers can be left off the
9034 end), some sizes are easily recognizable given knowledge of the
9035 approximate architecture. */
9037 struct remote_g_packet_guess
9040 const struct target_desc
*tdesc
;
9042 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9043 DEF_VEC_O(remote_g_packet_guess_s
);
9045 struct remote_g_packet_data
9047 VEC(remote_g_packet_guess_s
) *guesses
;
9050 static struct gdbarch_data
*remote_g_packet_data_handle
;
9053 remote_g_packet_data_init (struct obstack
*obstack
)
9055 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9059 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9060 const struct target_desc
*tdesc
)
9062 struct remote_g_packet_data
*data
9063 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9064 struct remote_g_packet_guess new_guess
, *guess
;
9067 gdb_assert (tdesc
!= NULL
);
9070 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9072 if (guess
->bytes
== bytes
)
9073 internal_error (__FILE__
, __LINE__
,
9074 _("Duplicate g packet description added for size %d"),
9077 new_guess
.bytes
= bytes
;
9078 new_guess
.tdesc
= tdesc
;
9079 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9082 /* Return 1 if remote_read_description would do anything on this target
9083 and architecture, 0 otherwise. */
9086 remote_read_description_p (struct target_ops
*target
)
9088 struct remote_g_packet_data
*data
9089 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9091 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9097 static const struct target_desc
*
9098 remote_read_description (struct target_ops
*target
)
9100 struct remote_g_packet_data
*data
9101 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9103 /* Do not try this during initial connection, when we do not know
9104 whether there is a running but stopped thread. */
9105 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9108 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9110 struct remote_g_packet_guess
*guess
;
9112 int bytes
= send_g_packet ();
9115 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9117 if (guess
->bytes
== bytes
)
9118 return guess
->tdesc
;
9120 /* We discard the g packet. A minor optimization would be to
9121 hold on to it, and fill the register cache once we have selected
9122 an architecture, but it's too tricky to do safely. */
9128 /* Remote file transfer support. This is host-initiated I/O, not
9129 target-initiated; for target-initiated, see remote-fileio.c. */
9131 /* If *LEFT is at least the length of STRING, copy STRING to
9132 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9133 decrease *LEFT. Otherwise raise an error. */
9136 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9138 int len
= strlen (string
);
9141 error (_("Packet too long for target."));
9143 memcpy (*buffer
, string
, len
);
9147 /* NUL-terminate the buffer as a convenience, if there is
9153 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9154 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9155 decrease *LEFT. Otherwise raise an error. */
9158 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9161 if (2 * len
> *left
)
9162 error (_("Packet too long for target."));
9164 bin2hex (bytes
, *buffer
, len
);
9168 /* NUL-terminate the buffer as a convenience, if there is
9174 /* If *LEFT is large enough, convert VALUE to hex and add it to
9175 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9176 decrease *LEFT. Otherwise raise an error. */
9179 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9181 int len
= hexnumlen (value
);
9184 error (_("Packet too long for target."));
9186 hexnumstr (*buffer
, value
);
9190 /* NUL-terminate the buffer as a convenience, if there is
9196 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9197 value, *REMOTE_ERRNO to the remote error number or zero if none
9198 was included, and *ATTACHMENT to point to the start of the annex
9199 if any. The length of the packet isn't needed here; there may
9200 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9202 Return 0 if the packet could be parsed, -1 if it could not. If
9203 -1 is returned, the other variables may not be initialized. */
9206 remote_hostio_parse_result (char *buffer
, int *retcode
,
9207 int *remote_errno
, char **attachment
)
9214 if (buffer
[0] != 'F')
9218 *retcode
= strtol (&buffer
[1], &p
, 16);
9219 if (errno
!= 0 || p
== &buffer
[1])
9222 /* Check for ",errno". */
9226 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9227 if (errno
!= 0 || p
+ 1 == p2
)
9232 /* Check for ";attachment". If there is no attachment, the
9233 packet should end here. */
9236 *attachment
= p
+ 1;
9239 else if (*p
== '\0')
9245 /* Send a prepared I/O packet to the target and read its response.
9246 The prepared packet is in the global RS->BUF before this function
9247 is called, and the answer is there when we return.
9249 COMMAND_BYTES is the length of the request to send, which may include
9250 binary data. WHICH_PACKET is the packet configuration to check
9251 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9252 is set to the error number and -1 is returned. Otherwise the value
9253 returned by the function is returned.
9255 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9256 attachment is expected; an error will be reported if there's a
9257 mismatch. If one is found, *ATTACHMENT will be set to point into
9258 the packet buffer and *ATTACHMENT_LEN will be set to the
9259 attachment's length. */
9262 remote_hostio_send_command (int command_bytes
, int which_packet
,
9263 int *remote_errno
, char **attachment
,
9264 int *attachment_len
)
9266 struct remote_state
*rs
= get_remote_state ();
9267 int ret
, bytes_read
;
9268 char *attachment_tmp
;
9271 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9273 *remote_errno
= FILEIO_ENOSYS
;
9277 putpkt_binary (rs
->buf
, command_bytes
);
9278 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9280 /* If it timed out, something is wrong. Don't try to parse the
9284 *remote_errno
= FILEIO_EINVAL
;
9288 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9291 *remote_errno
= FILEIO_EINVAL
;
9293 case PACKET_UNKNOWN
:
9294 *remote_errno
= FILEIO_ENOSYS
;
9300 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9303 *remote_errno
= FILEIO_EINVAL
;
9307 /* Make sure we saw an attachment if and only if we expected one. */
9308 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9309 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9311 *remote_errno
= FILEIO_EINVAL
;
9315 /* If an attachment was found, it must point into the packet buffer;
9316 work out how many bytes there were. */
9317 if (attachment_tmp
!= NULL
)
9319 *attachment
= attachment_tmp
;
9320 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9326 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9327 remote file descriptor, or -1 if an error occurs (and set
9331 remote_hostio_open (const char *filename
, int flags
, int mode
,
9334 struct remote_state
*rs
= get_remote_state ();
9336 int left
= get_remote_packet_size () - 1;
9338 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9340 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9342 remote_buffer_add_string (&p
, &left
, ",");
9344 remote_buffer_add_int (&p
, &left
, flags
);
9345 remote_buffer_add_string (&p
, &left
, ",");
9347 remote_buffer_add_int (&p
, &left
, mode
);
9349 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9350 remote_errno
, NULL
, NULL
);
9353 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9354 Return the number of bytes written, or -1 if an error occurs (and
9355 set *REMOTE_ERRNO). */
9358 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9359 ULONGEST offset
, int *remote_errno
)
9361 struct remote_state
*rs
= get_remote_state ();
9363 int left
= get_remote_packet_size ();
9366 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9368 remote_buffer_add_int (&p
, &left
, fd
);
9369 remote_buffer_add_string (&p
, &left
, ",");
9371 remote_buffer_add_int (&p
, &left
, offset
);
9372 remote_buffer_add_string (&p
, &left
, ",");
9374 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9375 get_remote_packet_size () - (p
- rs
->buf
));
9377 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9378 remote_errno
, NULL
, NULL
);
9381 /* Read up to LEN bytes FD on the remote target into READ_BUF
9382 Return the number of bytes read, or -1 if an error occurs (and
9383 set *REMOTE_ERRNO). */
9386 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9387 ULONGEST offset
, int *remote_errno
)
9389 struct remote_state
*rs
= get_remote_state ();
9392 int left
= get_remote_packet_size ();
9393 int ret
, attachment_len
;
9396 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9398 remote_buffer_add_int (&p
, &left
, fd
);
9399 remote_buffer_add_string (&p
, &left
, ",");
9401 remote_buffer_add_int (&p
, &left
, len
);
9402 remote_buffer_add_string (&p
, &left
, ",");
9404 remote_buffer_add_int (&p
, &left
, offset
);
9406 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9407 remote_errno
, &attachment
,
9413 read_len
= remote_unescape_input (attachment
, attachment_len
,
9415 if (read_len
!= ret
)
9416 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9421 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9422 (and set *REMOTE_ERRNO). */
9425 remote_hostio_close (int fd
, int *remote_errno
)
9427 struct remote_state
*rs
= get_remote_state ();
9429 int left
= get_remote_packet_size () - 1;
9431 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9433 remote_buffer_add_int (&p
, &left
, fd
);
9435 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9436 remote_errno
, NULL
, NULL
);
9439 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9440 occurs (and set *REMOTE_ERRNO). */
9443 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9445 struct remote_state
*rs
= get_remote_state ();
9447 int left
= get_remote_packet_size () - 1;
9449 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9451 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9454 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9455 remote_errno
, NULL
, NULL
);
9458 /* Read value of symbolic link FILENAME on the remote target. Return
9459 a null-terminated string allocated via xmalloc, or NULL if an error
9460 occurs (and set *REMOTE_ERRNO). */
9463 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9465 struct remote_state
*rs
= get_remote_state ();
9468 int left
= get_remote_packet_size ();
9469 int len
, attachment_len
;
9473 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9475 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9478 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9479 remote_errno
, &attachment
,
9485 ret
= xmalloc (len
+ 1);
9487 read_len
= remote_unescape_input (attachment
, attachment_len
,
9489 if (read_len
!= len
)
9490 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9497 remote_fileio_errno_to_host (int errnum
)
9521 case FILEIO_ENOTDIR
:
9541 case FILEIO_ENAMETOOLONG
:
9542 return ENAMETOOLONG
;
9548 remote_hostio_error (int errnum
)
9550 int host_error
= remote_fileio_errno_to_host (errnum
);
9552 if (host_error
== -1)
9553 error (_("Unknown remote I/O error %d"), errnum
);
9555 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9559 remote_hostio_close_cleanup (void *opaque
)
9561 int fd
= *(int *) opaque
;
9564 remote_hostio_close (fd
, &remote_errno
);
9569 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9571 const char *filename
= bfd_get_filename (abfd
);
9572 int fd
, remote_errno
;
9575 gdb_assert (remote_filename_p (filename
));
9577 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9580 errno
= remote_fileio_errno_to_host (remote_errno
);
9581 bfd_set_error (bfd_error_system_call
);
9585 stream
= xmalloc (sizeof (int));
9591 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9593 int fd
= *(int *)stream
;
9598 /* Ignore errors on close; these may happen if the remote
9599 connection was already torn down. */
9600 remote_hostio_close (fd
, &remote_errno
);
9606 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9607 file_ptr nbytes
, file_ptr offset
)
9609 int fd
= *(int *)stream
;
9611 file_ptr pos
, bytes
;
9614 while (nbytes
> pos
)
9616 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9617 offset
+ pos
, &remote_errno
);
9619 /* Success, but no bytes, means end-of-file. */
9623 errno
= remote_fileio_errno_to_host (remote_errno
);
9624 bfd_set_error (bfd_error_system_call
);
9635 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9637 /* FIXME: We should probably implement remote_hostio_stat. */
9638 sb
->st_size
= INT_MAX
;
9643 remote_filename_p (const char *filename
)
9645 return strncmp (filename
, "remote:", 7) == 0;
9649 remote_bfd_open (const char *remote_file
, const char *target
)
9651 return bfd_openr_iovec (remote_file
, target
,
9652 remote_bfd_iovec_open
, NULL
,
9653 remote_bfd_iovec_pread
,
9654 remote_bfd_iovec_close
,
9655 remote_bfd_iovec_stat
);
9659 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9661 struct cleanup
*back_to
, *close_cleanup
;
9662 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9665 int bytes_in_buffer
;
9670 error (_("command can only be used with remote target"));
9672 file
= fopen (local_file
, "rb");
9674 perror_with_name (local_file
);
9675 back_to
= make_cleanup_fclose (file
);
9677 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9679 0700, &remote_errno
);
9681 remote_hostio_error (remote_errno
);
9683 /* Send up to this many bytes at once. They won't all fit in the
9684 remote packet limit, so we'll transfer slightly fewer. */
9685 io_size
= get_remote_packet_size ();
9686 buffer
= xmalloc (io_size
);
9687 make_cleanup (xfree
, buffer
);
9689 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9691 bytes_in_buffer
= 0;
9694 while (bytes_in_buffer
|| !saw_eof
)
9698 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9699 io_size
- bytes_in_buffer
,
9704 error (_("Error reading %s."), local_file
);
9707 /* EOF. Unless there is something still in the
9708 buffer from the last iteration, we are done. */
9710 if (bytes_in_buffer
== 0)
9718 bytes
+= bytes_in_buffer
;
9719 bytes_in_buffer
= 0;
9721 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9722 offset
, &remote_errno
);
9725 remote_hostio_error (remote_errno
);
9726 else if (retcode
== 0)
9727 error (_("Remote write of %d bytes returned 0!"), bytes
);
9728 else if (retcode
< bytes
)
9730 /* Short write. Save the rest of the read data for the next
9732 bytes_in_buffer
= bytes
- retcode
;
9733 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9739 discard_cleanups (close_cleanup
);
9740 if (remote_hostio_close (fd
, &remote_errno
))
9741 remote_hostio_error (remote_errno
);
9744 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9745 do_cleanups (back_to
);
9749 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9751 struct cleanup
*back_to
, *close_cleanup
;
9752 int fd
, remote_errno
, bytes
, io_size
;
9758 error (_("command can only be used with remote target"));
9760 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9762 remote_hostio_error (remote_errno
);
9764 file
= fopen (local_file
, "wb");
9766 perror_with_name (local_file
);
9767 back_to
= make_cleanup_fclose (file
);
9769 /* Send up to this many bytes at once. They won't all fit in the
9770 remote packet limit, so we'll transfer slightly fewer. */
9771 io_size
= get_remote_packet_size ();
9772 buffer
= xmalloc (io_size
);
9773 make_cleanup (xfree
, buffer
);
9775 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9780 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9782 /* Success, but no bytes, means end-of-file. */
9785 remote_hostio_error (remote_errno
);
9789 bytes
= fwrite (buffer
, 1, bytes
, file
);
9791 perror_with_name (local_file
);
9794 discard_cleanups (close_cleanup
);
9795 if (remote_hostio_close (fd
, &remote_errno
))
9796 remote_hostio_error (remote_errno
);
9799 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9800 do_cleanups (back_to
);
9804 remote_file_delete (const char *remote_file
, int from_tty
)
9806 int retcode
, remote_errno
;
9809 error (_("command can only be used with remote target"));
9811 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9813 remote_hostio_error (remote_errno
);
9816 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9820 remote_put_command (char *args
, int from_tty
)
9822 struct cleanup
*back_to
;
9826 error_no_arg (_("file to put"));
9828 argv
= gdb_buildargv (args
);
9829 back_to
= make_cleanup_freeargv (argv
);
9830 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9831 error (_("Invalid parameters to remote put"));
9833 remote_file_put (argv
[0], argv
[1], from_tty
);
9835 do_cleanups (back_to
);
9839 remote_get_command (char *args
, int from_tty
)
9841 struct cleanup
*back_to
;
9845 error_no_arg (_("file to get"));
9847 argv
= gdb_buildargv (args
);
9848 back_to
= make_cleanup_freeargv (argv
);
9849 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9850 error (_("Invalid parameters to remote get"));
9852 remote_file_get (argv
[0], argv
[1], from_tty
);
9854 do_cleanups (back_to
);
9858 remote_delete_command (char *args
, int from_tty
)
9860 struct cleanup
*back_to
;
9864 error_no_arg (_("file to delete"));
9866 argv
= gdb_buildargv (args
);
9867 back_to
= make_cleanup_freeargv (argv
);
9868 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9869 error (_("Invalid parameters to remote delete"));
9871 remote_file_delete (argv
[0], from_tty
);
9873 do_cleanups (back_to
);
9877 remote_command (char *args
, int from_tty
)
9879 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9883 remote_can_execute_reverse (void)
9885 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9886 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9893 remote_supports_non_stop (void)
9899 remote_supports_disable_randomization (void)
9901 /* Only supported in extended mode. */
9906 remote_supports_multi_process (void)
9908 struct remote_state
*rs
= get_remote_state ();
9910 /* Only extended-remote handles being attached to multiple
9911 processes, even though plain remote can use the multi-process
9912 thread id extensions, so that GDB knows the target process's
9914 return rs
->extended
&& remote_multi_process_p (rs
);
9918 remote_supports_cond_tracepoints (void)
9920 struct remote_state
*rs
= get_remote_state ();
9922 return rs
->cond_tracepoints
;
9926 remote_supports_cond_breakpoints (void)
9928 struct remote_state
*rs
= get_remote_state ();
9930 return rs
->cond_breakpoints
;
9934 remote_supports_fast_tracepoints (void)
9936 struct remote_state
*rs
= get_remote_state ();
9938 return rs
->fast_tracepoints
;
9942 remote_supports_static_tracepoints (void)
9944 struct remote_state
*rs
= get_remote_state ();
9946 return rs
->static_tracepoints
;
9950 remote_supports_install_in_trace (void)
9952 struct remote_state
*rs
= get_remote_state ();
9954 return rs
->install_in_trace
;
9958 remote_supports_enable_disable_tracepoint (void)
9960 struct remote_state
*rs
= get_remote_state ();
9962 return rs
->enable_disable_tracepoints
;
9966 remote_supports_string_tracing (void)
9968 struct remote_state
*rs
= get_remote_state ();
9970 return rs
->string_tracing
;
9974 remote_trace_init (void)
9977 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9978 if (strcmp (target_buf
, "OK") != 0)
9979 error (_("Target does not support this command."));
9982 static void free_actions_list (char **actions_list
);
9983 static void free_actions_list_cleanup_wrapper (void *);
9985 free_actions_list_cleanup_wrapper (void *al
)
9987 free_actions_list (al
);
9991 free_actions_list (char **actions_list
)
9995 if (actions_list
== 0)
9998 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9999 xfree (actions_list
[ndx
]);
10001 xfree (actions_list
);
10004 /* Recursive routine to walk through command list including loops, and
10005 download packets for each command. */
10008 remote_download_command_source (int num
, ULONGEST addr
,
10009 struct command_line
*cmds
)
10011 struct remote_state
*rs
= get_remote_state ();
10012 struct command_line
*cmd
;
10014 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10016 QUIT
; /* Allow user to bail out with ^C. */
10017 strcpy (rs
->buf
, "QTDPsrc:");
10018 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10019 rs
->buf
+ strlen (rs
->buf
),
10020 rs
->buf_size
- strlen (rs
->buf
));
10022 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10023 if (strcmp (target_buf
, "OK"))
10024 warning (_("Target does not support source download."));
10026 if (cmd
->control_type
== while_control
10027 || cmd
->control_type
== while_stepping_control
)
10029 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10031 QUIT
; /* Allow user to bail out with ^C. */
10032 strcpy (rs
->buf
, "QTDPsrc:");
10033 encode_source_string (num
, addr
, "cmd", "end",
10034 rs
->buf
+ strlen (rs
->buf
),
10035 rs
->buf_size
- strlen (rs
->buf
));
10037 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10038 if (strcmp (target_buf
, "OK"))
10039 warning (_("Target does not support source download."));
10045 remote_download_tracepoint (struct bp_location
*loc
)
10051 char **tdp_actions
;
10052 char **stepping_actions
;
10054 struct cleanup
*old_chain
= NULL
;
10055 struct agent_expr
*aexpr
;
10056 struct cleanup
*aexpr_chain
= NULL
;
10058 struct breakpoint
*b
= loc
->owner
;
10059 struct tracepoint
*t
= (struct tracepoint
*) b
;
10061 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10062 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10064 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10067 tpaddr
= loc
->address
;
10068 sprintf_vma (addrbuf
, tpaddr
);
10069 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10070 addrbuf
, /* address */
10071 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10072 t
->step_count
, t
->pass_count
);
10073 /* Fast tracepoints are mostly handled by the target, but we can
10074 tell the target how big of an instruction block should be moved
10076 if (b
->type
== bp_fast_tracepoint
)
10078 /* Only test for support at download time; we may not know
10079 target capabilities at definition time. */
10080 if (remote_supports_fast_tracepoints ())
10084 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
10085 tpaddr
, &isize
, NULL
))
10086 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
10088 /* If it passed validation at definition but fails now,
10089 something is very wrong. */
10090 internal_error (__FILE__
, __LINE__
,
10091 _("Fast tracepoint not "
10092 "valid during download"));
10095 /* Fast tracepoints are functionally identical to regular
10096 tracepoints, so don't take lack of support as a reason to
10097 give up on the trace run. */
10098 warning (_("Target does not support fast tracepoints, "
10099 "downloading %d as regular tracepoint"), b
->number
);
10101 else if (b
->type
== bp_static_tracepoint
)
10103 /* Only test for support at download time; we may not know
10104 target capabilities at definition time. */
10105 if (remote_supports_static_tracepoints ())
10107 struct static_tracepoint_marker marker
;
10109 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10110 strcat (buf
, ":S");
10112 error (_("Static tracepoint not valid during download"));
10115 /* Fast tracepoints are functionally identical to regular
10116 tracepoints, so don't take lack of support as a reason
10117 to give up on the trace run. */
10118 error (_("Target does not support static tracepoints"));
10120 /* If the tracepoint has a conditional, make it into an agent
10121 expression and append to the definition. */
10124 /* Only test support at download time, we may not know target
10125 capabilities at definition time. */
10126 if (remote_supports_cond_tracepoints ())
10128 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10129 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10130 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
10131 pkt
= buf
+ strlen (buf
);
10132 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10133 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10135 do_cleanups (aexpr_chain
);
10138 warning (_("Target does not support conditional tracepoints, "
10139 "ignoring tp %d cond"), b
->number
);
10142 if (b
->commands
|| *default_collect
)
10145 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10146 if (strcmp (target_buf
, "OK"))
10147 error (_("Target does not support tracepoints."));
10149 /* do_single_steps (t); */
10152 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10154 QUIT
; /* Allow user to bail out with ^C. */
10155 sprintf (buf
, "QTDP:-%x:%s:%s%c",
10156 b
->number
, addrbuf
, /* address */
10158 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10161 remote_get_noisy_reply (&target_buf
,
10163 if (strcmp (target_buf
, "OK"))
10164 error (_("Error on target while setting tracepoints."));
10167 if (stepping_actions
)
10169 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10171 QUIT
; /* Allow user to bail out with ^C. */
10172 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
10173 b
->number
, addrbuf
, /* address */
10174 ((ndx
== 0) ? "S" : ""),
10175 stepping_actions
[ndx
],
10176 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10178 remote_get_noisy_reply (&target_buf
,
10180 if (strcmp (target_buf
, "OK"))
10181 error (_("Error on target while setting tracepoints."));
10185 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10188 if (b
->addr_string
)
10190 strcpy (buf
, "QTDPsrc:");
10191 encode_source_string (b
->number
, loc
->address
,
10192 "at", b
->addr_string
, buf
+ strlen (buf
),
10193 2048 - strlen (buf
));
10196 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10197 if (strcmp (target_buf
, "OK"))
10198 warning (_("Target does not support source download."));
10200 if (b
->cond_string
)
10202 strcpy (buf
, "QTDPsrc:");
10203 encode_source_string (b
->number
, loc
->address
,
10204 "cond", b
->cond_string
, buf
+ strlen (buf
),
10205 2048 - strlen (buf
));
10207 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10208 if (strcmp (target_buf
, "OK"))
10209 warning (_("Target does not support source download."));
10211 remote_download_command_source (b
->number
, loc
->address
,
10212 breakpoint_commands (b
));
10215 do_cleanups (old_chain
);
10219 remote_can_download_tracepoint (void)
10221 struct trace_status
*ts
= current_trace_status ();
10222 int status
= remote_get_trace_status (ts
);
10224 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10227 /* If we are in a tracing experiment, but remote stub doesn't support
10228 installing tracepoint in trace, we have to return. */
10229 if (!remote_supports_install_in_trace ())
10237 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10239 struct remote_state
*rs
= get_remote_state ();
10242 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
10243 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
10244 p
= rs
->buf
+ strlen (rs
->buf
);
10245 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10246 error (_("Trace state variable name too long for tsv definition packet"));
10247 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10250 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10251 if (*target_buf
== '\0')
10252 error (_("Target does not support this command."));
10253 if (strcmp (target_buf
, "OK") != 0)
10254 error (_("Error on target while downloading trace state variable."));
10258 remote_enable_tracepoint (struct bp_location
*location
)
10260 struct remote_state
*rs
= get_remote_state ();
10263 sprintf_vma (addr_buf
, location
->address
);
10264 sprintf (rs
->buf
, "QTEnable:%x:%s", location
->owner
->number
, addr_buf
);
10266 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10267 if (*rs
->buf
== '\0')
10268 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10269 if (strcmp (rs
->buf
, "OK") != 0)
10270 error (_("Error on target while enabling tracepoint."));
10274 remote_disable_tracepoint (struct bp_location
*location
)
10276 struct remote_state
*rs
= get_remote_state ();
10279 sprintf_vma (addr_buf
, location
->address
);
10280 sprintf (rs
->buf
, "QTDisable:%x:%s", location
->owner
->number
, addr_buf
);
10282 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10283 if (*rs
->buf
== '\0')
10284 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10285 if (strcmp (rs
->buf
, "OK") != 0)
10286 error (_("Error on target while disabling tracepoint."));
10290 remote_trace_set_readonly_regions (void)
10293 bfd_size_type size
;
10299 return; /* No information to give. */
10301 strcpy (target_buf
, "QTro");
10302 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10304 char tmp1
[40], tmp2
[40];
10307 if ((s
->flags
& SEC_LOAD
) == 0 ||
10308 /* (s->flags & SEC_CODE) == 0 || */
10309 (s
->flags
& SEC_READONLY
) == 0)
10313 vma
= bfd_get_section_vma (,s
);
10314 size
= bfd_get_section_size (s
);
10315 sprintf_vma (tmp1
, vma
);
10316 sprintf_vma (tmp2
, vma
+ size
);
10317 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10318 if (offset
+ sec_length
+ 1 > target_buf_size
)
10320 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10323 Too many sections for read-only sections definition packet."));
10326 sprintf (target_buf
+ offset
, ":%s,%s", tmp1
, tmp2
);
10327 offset
+= sec_length
;
10331 putpkt (target_buf
);
10332 getpkt (&target_buf
, &target_buf_size
, 0);
10337 remote_trace_start (void)
10339 putpkt ("QTStart");
10340 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10341 if (*target_buf
== '\0')
10342 error (_("Target does not support this command."));
10343 if (strcmp (target_buf
, "OK") != 0)
10344 error (_("Bogus reply from target: %s"), target_buf
);
10348 remote_get_trace_status (struct trace_status
*ts
)
10350 /* Initialize it just to avoid a GCC false warning. */
10352 /* FIXME we need to get register block size some other way. */
10353 extern int trace_regblock_size
;
10354 volatile struct gdb_exception ex
;
10356 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10358 putpkt ("qTStatus");
10360 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10362 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10366 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10370 /* If the remote target doesn't do tracing, flag it. */
10374 /* We're working with a live target. */
10377 /* Set some defaults. */
10378 ts
->running_known
= 0;
10379 ts
->stop_reason
= trace_stop_reason_unknown
;
10380 ts
->traceframe_count
= -1;
10381 ts
->buffer_free
= 0;
10384 error (_("Bogus trace status reply from target: %s"), target_buf
);
10386 parse_trace_status (p
, ts
);
10388 return ts
->running
;
10392 remote_get_tracepoint_status (struct breakpoint
*bp
,
10393 struct uploaded_tp
*utp
)
10395 struct remote_state
*rs
= get_remote_state ();
10397 struct bp_location
*loc
;
10398 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10402 tp
->base
.hit_count
= 0;
10403 tp
->traceframe_usage
= 0;
10404 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10406 /* If the tracepoint was never downloaded, don't go asking for
10408 if (tp
->number_on_target
== 0)
10410 sprintf (rs
->buf
, "qTP:%x:%s", tp
->number_on_target
,
10411 phex_nz (loc
->address
, 0));
10413 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10414 if (reply
&& *reply
)
10417 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10423 utp
->hit_count
= 0;
10424 utp
->traceframe_usage
= 0;
10425 sprintf (rs
->buf
, "qTP:%x:%s", utp
->number
, phex_nz (utp
->addr
, 0));
10427 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10428 if (reply
&& *reply
)
10431 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10437 remote_trace_stop (void)
10440 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10441 if (*target_buf
== '\0')
10442 error (_("Target does not support this command."));
10443 if (strcmp (target_buf
, "OK") != 0)
10444 error (_("Bogus reply from target: %s"), target_buf
);
10448 remote_trace_find (enum trace_find_type type
, int num
,
10449 ULONGEST addr1
, ULONGEST addr2
,
10452 struct remote_state
*rs
= get_remote_state ();
10454 int target_frameno
= -1, target_tracept
= -1;
10456 /* Lookups other than by absolute frame number depend on the current
10457 trace selected, so make sure it is correct on the remote end
10459 if (type
!= tfind_number
)
10460 set_remote_traceframe ();
10463 strcpy (p
, "QTFrame:");
10464 p
= strchr (p
, '\0');
10468 sprintf (p
, "%x", num
);
10471 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
10474 sprintf (p
, "tdp:%x", num
);
10477 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
10479 case tfind_outside
:
10480 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
10483 error (_("Unknown trace find type %d"), type
);
10487 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10488 if (*reply
== '\0')
10489 error (_("Target does not support this command."));
10491 while (reply
&& *reply
)
10496 target_frameno
= (int) strtol (p
, &reply
, 16);
10498 error (_("Unable to parse trace frame number"));
10499 /* Don't update our remote traceframe number cache on failure
10500 to select a remote traceframe. */
10501 if (target_frameno
== -1)
10506 target_tracept
= (int) strtol (p
, &reply
, 16);
10508 error (_("Unable to parse tracepoint number"));
10510 case 'O': /* "OK"? */
10511 if (reply
[1] == 'K' && reply
[2] == '\0')
10514 error (_("Bogus reply from target: %s"), reply
);
10517 error (_("Bogus reply from target: %s"), reply
);
10520 *tpp
= target_tracept
;
10522 remote_traceframe_number
= target_frameno
;
10523 return target_frameno
;
10527 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10529 struct remote_state
*rs
= get_remote_state ();
10533 set_remote_traceframe ();
10535 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
10537 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10538 if (reply
&& *reply
)
10542 unpack_varlen_hex (reply
+ 1, &uval
);
10543 *val
= (LONGEST
) uval
;
10551 remote_save_trace_data (const char *filename
)
10553 struct remote_state
*rs
= get_remote_state ();
10557 strcpy (p
, "QTSave:");
10559 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10560 error (_("Remote file name too long for trace save packet"));
10561 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10564 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10565 if (*reply
== '\0')
10566 error (_("Target does not support this command."));
10567 if (strcmp (reply
, "OK") != 0)
10568 error (_("Bogus reply from target: %s"), reply
);
10572 /* This is basically a memory transfer, but needs to be its own packet
10573 because we don't know how the target actually organizes its trace
10574 memory, plus we want to be able to ask for as much as possible, but
10575 not be unhappy if we don't get as much as we ask for. */
10578 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10580 struct remote_state
*rs
= get_remote_state ();
10586 strcpy (p
, "qTBuffer:");
10588 p
+= hexnumstr (p
, offset
);
10590 p
+= hexnumstr (p
, len
);
10594 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10595 if (reply
&& *reply
)
10597 /* 'l' by itself means we're at the end of the buffer and
10598 there is nothing more to get. */
10602 /* Convert the reply into binary. Limit the number of bytes to
10603 convert according to our passed-in buffer size, rather than
10604 what was returned in the packet; if the target is
10605 unexpectedly generous and gives us a bigger reply than we
10606 asked for, we don't want to crash. */
10607 rslt
= hex2bin (target_buf
, buf
, len
);
10611 /* Something went wrong, flag as an error. */
10616 remote_set_disconnected_tracing (int val
)
10618 struct remote_state
*rs
= get_remote_state ();
10620 if (rs
->disconnected_tracing
)
10624 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
10626 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10627 if (*reply
== '\0')
10628 error (_("Target does not support this command."));
10629 if (strcmp (reply
, "OK") != 0)
10630 error (_("Bogus reply from target: %s"), reply
);
10633 warning (_("Target does not support disconnected tracing."));
10637 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10639 struct thread_info
*info
= find_thread_ptid (ptid
);
10641 if (info
&& info
->private)
10642 return info
->private->core
;
10647 remote_set_circular_trace_buffer (int val
)
10649 struct remote_state
*rs
= get_remote_state ();
10652 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
10654 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10655 if (*reply
== '\0')
10656 error (_("Target does not support this command."));
10657 if (strcmp (reply
, "OK") != 0)
10658 error (_("Bogus reply from target: %s"), reply
);
10661 static struct traceframe_info
*
10662 remote_traceframe_info (void)
10666 text
= target_read_stralloc (¤t_target
,
10667 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10670 struct traceframe_info
*info
;
10671 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10673 info
= parse_traceframe_info (text
);
10674 do_cleanups (back_to
);
10681 /* Handle the qTMinFTPILen packet. Returns the minimum length of
10682 instruction on which a fast tracepoint may be placed. Returns -1
10683 if the packet is not supported, and 0 if the minimum instruction
10684 length is unknown. */
10687 remote_get_min_fast_tracepoint_insn_len (void)
10689 struct remote_state
*rs
= get_remote_state ();
10692 /* If we're not debugging a process yet, the IPA can't be
10694 if (!target_has_execution
)
10697 /* Make sure the remote is pointing at the right process. */
10698 set_general_process ();
10700 sprintf (rs
->buf
, "qTMinFTPILen");
10702 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10703 if (*reply
== '\0')
10707 ULONGEST min_insn_len
;
10709 unpack_varlen_hex (reply
, &min_insn_len
);
10711 return (int) min_insn_len
;
10716 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
10718 struct remote_state
*rs
= get_remote_state ();
10720 char *buf
= rs
->buf
;
10721 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10724 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
10727 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
10728 nbytes
= bin2hex (user
, buf
, 0);
10734 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
10735 nbytes
= bin2hex (notes
, buf
, 0);
10741 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
10742 nbytes
= bin2hex (stop_notes
, buf
, 0);
10746 /* Ensure the buffer is terminated. */
10750 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10751 if (*reply
== '\0')
10754 if (strcmp (reply
, "OK") != 0)
10755 error (_("Bogus reply from target: %s"), reply
);
10761 init_remote_ops (void)
10763 remote_ops
.to_shortname
= "remote";
10764 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
10765 remote_ops
.to_doc
=
10766 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10767 Specify the serial device it is connected to\n\
10768 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
10769 remote_ops
.to_open
= remote_open
;
10770 remote_ops
.to_close
= remote_close
;
10771 remote_ops
.to_detach
= remote_detach
;
10772 remote_ops
.to_disconnect
= remote_disconnect
;
10773 remote_ops
.to_resume
= remote_resume
;
10774 remote_ops
.to_wait
= remote_wait
;
10775 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
10776 remote_ops
.to_store_registers
= remote_store_registers
;
10777 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
10778 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
10779 remote_ops
.to_files_info
= remote_files_info
;
10780 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
10781 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
10782 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
10783 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
10784 remote_ops
.to_watchpoint_addr_within_range
=
10785 remote_watchpoint_addr_within_range
;
10786 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
10787 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
10788 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
10789 remote_ops
.to_region_ok_for_hw_watchpoint
10790 = remote_region_ok_for_hw_watchpoint
;
10791 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
10792 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
10793 remote_ops
.to_kill
= remote_kill
;
10794 remote_ops
.to_load
= generic_load
;
10795 remote_ops
.to_mourn_inferior
= remote_mourn
;
10796 remote_ops
.to_pass_signals
= remote_pass_signals
;
10797 remote_ops
.to_thread_alive
= remote_thread_alive
;
10798 remote_ops
.to_find_new_threads
= remote_threads_info
;
10799 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
10800 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
10801 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
10802 remote_ops
.to_stop
= remote_stop
;
10803 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
10804 remote_ops
.to_rcmd
= remote_rcmd
;
10805 remote_ops
.to_log_command
= serial_log_command
;
10806 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
10807 remote_ops
.to_stratum
= process_stratum
;
10808 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
10809 remote_ops
.to_has_memory
= default_child_has_memory
;
10810 remote_ops
.to_has_stack
= default_child_has_stack
;
10811 remote_ops
.to_has_registers
= default_child_has_registers
;
10812 remote_ops
.to_has_execution
= default_child_has_execution
;
10813 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
10814 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
10815 remote_ops
.to_magic
= OPS_MAGIC
;
10816 remote_ops
.to_memory_map
= remote_memory_map
;
10817 remote_ops
.to_flash_erase
= remote_flash_erase
;
10818 remote_ops
.to_flash_done
= remote_flash_done
;
10819 remote_ops
.to_read_description
= remote_read_description
;
10820 remote_ops
.to_search_memory
= remote_search_memory
;
10821 remote_ops
.to_can_async_p
= remote_can_async_p
;
10822 remote_ops
.to_is_async_p
= remote_is_async_p
;
10823 remote_ops
.to_async
= remote_async
;
10824 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
10825 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
10826 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
10827 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
10828 remote_ops
.to_supports_disable_randomization
10829 = remote_supports_disable_randomization
;
10830 remote_ops
.to_fileio_open
= remote_hostio_open
;
10831 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
10832 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
10833 remote_ops
.to_fileio_close
= remote_hostio_close
;
10834 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
10835 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
10836 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
10837 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
10838 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
10839 remote_ops
.to_trace_init
= remote_trace_init
;
10840 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
10841 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
10842 remote_ops
.to_download_trace_state_variable
10843 = remote_download_trace_state_variable
;
10844 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
10845 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
10846 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
10847 remote_ops
.to_trace_start
= remote_trace_start
;
10848 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
10849 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
10850 remote_ops
.to_trace_stop
= remote_trace_stop
;
10851 remote_ops
.to_trace_find
= remote_trace_find
;
10852 remote_ops
.to_get_trace_state_variable_value
10853 = remote_get_trace_state_variable_value
;
10854 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
10855 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
10856 remote_ops
.to_upload_trace_state_variables
10857 = remote_upload_trace_state_variables
;
10858 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
10859 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
10860 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
10861 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
10862 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
10863 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
10864 remote_ops
.to_verify_memory
= remote_verify_memory
;
10865 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
10866 remote_ops
.to_set_permissions
= remote_set_permissions
;
10867 remote_ops
.to_static_tracepoint_marker_at
10868 = remote_static_tracepoint_marker_at
;
10869 remote_ops
.to_static_tracepoint_markers_by_strid
10870 = remote_static_tracepoint_markers_by_strid
;
10871 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
10874 /* Set up the extended remote vector by making a copy of the standard
10875 remote vector and adding to it. */
10878 init_extended_remote_ops (void)
10880 extended_remote_ops
= remote_ops
;
10882 extended_remote_ops
.to_shortname
= "extended-remote";
10883 extended_remote_ops
.to_longname
=
10884 "Extended remote serial target in gdb-specific protocol";
10885 extended_remote_ops
.to_doc
=
10886 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10887 Specify the serial device it is connected to (e.g. /dev/ttya).";
10888 extended_remote_ops
.to_open
= extended_remote_open
;
10889 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
10890 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
10891 extended_remote_ops
.to_detach
= extended_remote_detach
;
10892 extended_remote_ops
.to_attach
= extended_remote_attach
;
10893 extended_remote_ops
.to_kill
= extended_remote_kill
;
10894 extended_remote_ops
.to_supports_disable_randomization
10895 = extended_remote_supports_disable_randomization
;
10899 remote_can_async_p (void)
10901 if (!target_async_permitted
)
10902 /* We only enable async when the user specifically asks for it. */
10905 /* We're async whenever the serial device is. */
10906 return serial_can_async_p (remote_desc
);
10910 remote_is_async_p (void)
10912 if (!target_async_permitted
)
10913 /* We only enable async when the user specifically asks for it. */
10916 /* We're async whenever the serial device is. */
10917 return serial_is_async_p (remote_desc
);
10920 /* Pass the SERIAL event on and up to the client. One day this code
10921 will be able to delay notifying the client of an event until the
10922 point where an entire packet has been received. */
10924 static void (*async_client_callback
) (enum inferior_event_type event_type
,
10926 static void *async_client_context
;
10927 static serial_event_ftype remote_async_serial_handler
;
10930 remote_async_serial_handler (struct serial
*scb
, void *context
)
10932 /* Don't propogate error information up to the client. Instead let
10933 the client find out about the error by querying the target. */
10934 async_client_callback (INF_REG_EVENT
, async_client_context
);
10938 remote_async_inferior_event_handler (gdb_client_data data
)
10940 inferior_event_handler (INF_REG_EVENT
, NULL
);
10944 remote_async_get_pending_events_handler (gdb_client_data data
)
10946 remote_get_pending_stop_replies ();
10950 remote_async (void (*callback
) (enum inferior_event_type event_type
,
10951 void *context
), void *context
)
10953 if (callback
!= NULL
)
10955 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
10956 async_client_callback
= callback
;
10957 async_client_context
= context
;
10960 serial_async (remote_desc
, NULL
, NULL
);
10964 set_remote_cmd (char *args
, int from_tty
)
10966 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
10970 show_remote_cmd (char *args
, int from_tty
)
10972 /* We can't just use cmd_show_list here, because we want to skip
10973 the redundant "show remote Z-packet" and the legacy aliases. */
10974 struct cleanup
*showlist_chain
;
10975 struct cmd_list_element
*list
= remote_show_cmdlist
;
10976 struct ui_out
*uiout
= current_uiout
;
10978 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
10979 for (; list
!= NULL
; list
= list
->next
)
10980 if (strcmp (list
->name
, "Z-packet") == 0)
10982 else if (list
->type
== not_set_cmd
)
10983 /* Alias commands are exactly like the original, except they
10984 don't have the normal type. */
10988 struct cleanup
*option_chain
10989 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
10991 ui_out_field_string (uiout
, "name", list
->name
);
10992 ui_out_text (uiout
, ": ");
10993 if (list
->type
== show_cmd
)
10994 do_setshow_command ((char *) NULL
, from_tty
, list
);
10996 cmd_func (list
, NULL
, from_tty
);
10997 /* Close the tuple. */
10998 do_cleanups (option_chain
);
11001 /* Close the tuple. */
11002 do_cleanups (showlist_chain
);
11006 /* Function to be called whenever a new objfile (shlib) is detected. */
11008 remote_new_objfile (struct objfile
*objfile
)
11010 if (remote_desc
!= 0) /* Have a remote connection. */
11011 remote_check_symbols (objfile
);
11014 /* Pull all the tracepoints defined on the target and create local
11015 data structures representing them. We don't want to create real
11016 tracepoints yet, we don't want to mess up the user's existing
11020 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11022 struct remote_state
*rs
= get_remote_state ();
11025 /* Ask for a first packet of tracepoint definition. */
11027 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11029 while (*p
&& *p
!= 'l')
11031 parse_tracepoint_definition (p
, utpp
);
11032 /* Ask for another packet of tracepoint definition. */
11034 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11041 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11043 struct remote_state
*rs
= get_remote_state ();
11046 /* Ask for a first packet of variable definition. */
11048 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11050 while (*p
&& *p
!= 'l')
11052 parse_tsv_definition (p
, utsvp
);
11053 /* Ask for another packet of variable definition. */
11055 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11062 _initialize_remote (void)
11064 struct remote_state
*rs
;
11065 struct cmd_list_element
*cmd
;
11068 /* architecture specific data */
11069 remote_gdbarch_data_handle
=
11070 gdbarch_data_register_post_init (init_remote_state
);
11071 remote_g_packet_data_handle
=
11072 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11074 /* Initialize the per-target state. At the moment there is only one
11075 of these, not one per target. Only one target is active at a
11076 time. The default buffer size is unimportant; it will be expanded
11077 whenever a larger buffer is needed. */
11078 rs
= get_remote_state_raw ();
11079 rs
->buf_size
= 400;
11080 rs
->buf
= xmalloc (rs
->buf_size
);
11082 init_remote_ops ();
11083 add_target (&remote_ops
);
11085 init_extended_remote_ops ();
11086 add_target (&extended_remote_ops
);
11088 /* Hook into new objfile notification. */
11089 observer_attach_new_objfile (remote_new_objfile
);
11091 /* Set up signal handlers. */
11092 sigint_remote_token
=
11093 create_async_signal_handler (async_remote_interrupt
, NULL
);
11094 sigint_remote_twice_token
=
11095 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11098 init_remote_threadtests ();
11101 /* set/show remote ... */
11103 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11104 Remote protocol specific variables\n\
11105 Configure various remote-protocol specific variables such as\n\
11106 the packets being used"),
11107 &remote_set_cmdlist
, "set remote ",
11108 0 /* allow-unknown */, &setlist
);
11109 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11110 Remote protocol specific variables\n\
11111 Configure various remote-protocol specific variables such as\n\
11112 the packets being used"),
11113 &remote_show_cmdlist
, "show remote ",
11114 0 /* allow-unknown */, &showlist
);
11116 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11117 Compare section data on target to the exec file.\n\
11118 Argument is a single section name (default: all loaded sections)."),
11121 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11122 Send an arbitrary packet to a remote target.\n\
11123 maintenance packet TEXT\n\
11124 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11125 this command sends the string TEXT to the inferior, and displays the\n\
11126 response packet. GDB supplies the initial `$' character, and the\n\
11127 terminating `#' character and checksum."),
11130 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11131 Set whether to send break if interrupted."), _("\
11132 Show whether to send break if interrupted."), _("\
11133 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11134 set_remotebreak
, show_remotebreak
,
11135 &setlist
, &showlist
);
11136 cmd_name
= "remotebreak";
11137 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11138 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11139 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11140 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11141 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11143 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11144 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11146 Set interrupt sequence to remote target."), _("\
11147 Show interrupt sequence to remote target."), _("\
11148 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11149 NULL
, show_interrupt_sequence
,
11150 &remote_set_cmdlist
,
11151 &remote_show_cmdlist
);
11153 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11154 &interrupt_on_connect
, _("\
11155 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11156 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11157 If set, interrupt sequence is sent to remote target."),
11159 &remote_set_cmdlist
, &remote_show_cmdlist
);
11161 /* Install commands for configuring memory read/write packets. */
11163 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11164 Set the maximum number of bytes per memory write packet (deprecated)."),
11166 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11167 Show the maximum number of bytes per memory write packet (deprecated)."),
11169 add_cmd ("memory-write-packet-size", no_class
,
11170 set_memory_write_packet_size
, _("\
11171 Set the maximum number of bytes per memory-write packet.\n\
11172 Specify the number of bytes in a packet or 0 (zero) for the\n\
11173 default packet size. The actual limit is further reduced\n\
11174 dependent on the target. Specify ``fixed'' to disable the\n\
11175 further restriction and ``limit'' to enable that restriction."),
11176 &remote_set_cmdlist
);
11177 add_cmd ("memory-read-packet-size", no_class
,
11178 set_memory_read_packet_size
, _("\
11179 Set the maximum number of bytes per memory-read packet.\n\
11180 Specify the number of bytes in a packet or 0 (zero) for the\n\
11181 default packet size. The actual limit is further reduced\n\
11182 dependent on the target. Specify ``fixed'' to disable the\n\
11183 further restriction and ``limit'' to enable that restriction."),
11184 &remote_set_cmdlist
);
11185 add_cmd ("memory-write-packet-size", no_class
,
11186 show_memory_write_packet_size
,
11187 _("Show the maximum number of bytes per memory-write packet."),
11188 &remote_show_cmdlist
);
11189 add_cmd ("memory-read-packet-size", no_class
,
11190 show_memory_read_packet_size
,
11191 _("Show the maximum number of bytes per memory-read packet."),
11192 &remote_show_cmdlist
);
11194 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11195 &remote_hw_watchpoint_limit
, _("\
11196 Set the maximum number of target hardware watchpoints."), _("\
11197 Show the maximum number of target hardware watchpoints."), _("\
11198 Specify a negative limit for unlimited."),
11199 NULL
, NULL
, /* FIXME: i18n: The maximum
11200 number of target hardware
11201 watchpoints is %s. */
11202 &remote_set_cmdlist
, &remote_show_cmdlist
);
11203 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11204 &remote_hw_watchpoint_length_limit
, _("\
11205 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11206 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11207 Specify a negative limit for unlimited."),
11208 NULL
, NULL
, /* FIXME: i18n: The maximum
11209 length (in bytes) of a target
11210 hardware watchpoint is %s. */
11211 &remote_set_cmdlist
, &remote_show_cmdlist
);
11212 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11213 &remote_hw_breakpoint_limit
, _("\
11214 Set the maximum number of target hardware breakpoints."), _("\
11215 Show the maximum number of target hardware breakpoints."), _("\
11216 Specify a negative limit for unlimited."),
11217 NULL
, NULL
, /* FIXME: i18n: The maximum
11218 number of target hardware
11219 breakpoints is %s. */
11220 &remote_set_cmdlist
, &remote_show_cmdlist
);
11222 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
11223 &remote_address_size
, _("\
11224 Set the maximum size of the address (in bits) in a memory packet."), _("\
11225 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11227 NULL
, /* FIXME: i18n: */
11228 &setlist
, &showlist
);
11230 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11231 "X", "binary-download", 1);
11233 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11234 "vCont", "verbose-resume", 0);
11236 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11237 "QPassSignals", "pass-signals", 0);
11239 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11240 "qSymbol", "symbol-lookup", 0);
11242 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11243 "P", "set-register", 1);
11245 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11246 "p", "fetch-register", 1);
11248 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11249 "Z0", "software-breakpoint", 0);
11251 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11252 "Z1", "hardware-breakpoint", 0);
11254 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11255 "Z2", "write-watchpoint", 0);
11257 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11258 "Z3", "read-watchpoint", 0);
11260 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11261 "Z4", "access-watchpoint", 0);
11263 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11264 "qXfer:auxv:read", "read-aux-vector", 0);
11266 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11267 "qXfer:features:read", "target-features", 0);
11269 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11270 "qXfer:libraries:read", "library-info", 0);
11272 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11273 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11275 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11276 "qXfer:memory-map:read", "memory-map", 0);
11278 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11279 "qXfer:spu:read", "read-spu-object", 0);
11281 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11282 "qXfer:spu:write", "write-spu-object", 0);
11284 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11285 "qXfer:osdata:read", "osdata", 0);
11287 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11288 "qXfer:threads:read", "threads", 0);
11290 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11291 "qXfer:siginfo:read", "read-siginfo-object", 0);
11293 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11294 "qXfer:siginfo:write", "write-siginfo-object", 0);
11296 add_packet_config_cmd
11297 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11298 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11300 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11301 "qGetTLSAddr", "get-thread-local-storage-address",
11304 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11305 "qGetTIBAddr", "get-thread-information-block-address",
11308 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11309 "bc", "reverse-continue", 0);
11311 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11312 "bs", "reverse-step", 0);
11314 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11315 "qSupported", "supported-packets", 0);
11317 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11318 "qSearch:memory", "search-memory", 0);
11320 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11321 "vFile:open", "hostio-open", 0);
11323 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11324 "vFile:pread", "hostio-pread", 0);
11326 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11327 "vFile:pwrite", "hostio-pwrite", 0);
11329 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11330 "vFile:close", "hostio-close", 0);
11332 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11333 "vFile:unlink", "hostio-unlink", 0);
11335 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11336 "vFile:readlink", "hostio-readlink", 0);
11338 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11339 "vAttach", "attach", 0);
11341 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11344 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11345 "QStartNoAckMode", "noack", 0);
11347 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11348 "vKill", "kill", 0);
11350 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11351 "qAttached", "query-attached", 0);
11353 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11354 "ConditionalTracepoints",
11355 "conditional-tracepoints", 0);
11357 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11358 "ConditionalBreakpoints",
11359 "conditional-breakpoints", 0);
11361 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11362 "FastTracepoints", "fast-tracepoints", 0);
11364 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11365 "TracepointSource", "TracepointSource", 0);
11367 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11368 "QAllow", "allow", 0);
11370 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11371 "StaticTracepoints", "static-tracepoints", 0);
11373 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11374 "InstallInTrace", "install-in-trace", 0);
11376 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11377 "qXfer:statictrace:read", "read-sdata-object", 0);
11379 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11380 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11382 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11383 "QDisableRandomization", "disable-randomization", 0);
11385 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11386 Z sub-packet has its own set and show commands, but users may
11387 have sets to this variable in their .gdbinit files (or in their
11389 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11390 &remote_Z_packet_detect
, _("\
11391 Set use of remote protocol `Z' packets"), _("\
11392 Show use of remote protocol `Z' packets "), _("\
11393 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11395 set_remote_protocol_Z_packet_cmd
,
11396 show_remote_protocol_Z_packet_cmd
,
11397 /* FIXME: i18n: Use of remote protocol
11398 `Z' packets is %s. */
11399 &remote_set_cmdlist
, &remote_show_cmdlist
);
11401 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11402 Manipulate files on the remote system\n\
11403 Transfer files to and from the remote target system."),
11404 &remote_cmdlist
, "remote ",
11405 0 /* allow-unknown */, &cmdlist
);
11407 add_cmd ("put", class_files
, remote_put_command
,
11408 _("Copy a local file to the remote system."),
11411 add_cmd ("get", class_files
, remote_get_command
,
11412 _("Copy a remote file to the local system."),
11415 add_cmd ("delete", class_files
, remote_delete_command
,
11416 _("Delete a remote file."),
11419 remote_exec_file
= xstrdup ("");
11420 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11421 &remote_exec_file
, _("\
11422 Set the remote pathname for \"run\""), _("\
11423 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11424 &remote_set_cmdlist
, &remote_show_cmdlist
);
11426 /* Eventually initialize fileio. See fileio.c */
11427 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11429 /* Take advantage of the fact that the LWP field is not used, to tag
11430 special ptids with it set to != 0. */
11431 magic_null_ptid
= ptid_build (42000, 1, -1);
11432 not_sent_ptid
= ptid_build (42000, 1, -2);
11433 any_thread_ptid
= ptid_build (42000, 1, 0);
11435 target_buf_size
= 2048;
11436 target_buf
= xmalloc (target_buf_size
);